WO2020239125A1 - 雷达测试方法及装置 - Google Patents
雷达测试方法及装置 Download PDFInfo
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- WO2020239125A1 WO2020239125A1 PCT/CN2020/093740 CN2020093740W WO2020239125A1 WO 2020239125 A1 WO2020239125 A1 WO 2020239125A1 CN 2020093740 W CN2020093740 W CN 2020093740W WO 2020239125 A1 WO2020239125 A1 WO 2020239125A1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/40—Means for monitoring or calibrating
Definitions
- This application relates to the field of communication technology, and in particular to radar testing methods and devices.
- Radar (radar) test is to find the target with wireless electromagnetic waves and detect the spatial position of the target.
- the introduction of radar testing in Wireless Local Area Networks (WLAN) is a very promising technology in the future.
- WIFI radar can be used to detect the presence of people, identify people's actions, and troubleshoot equipment failures.
- Using radar testing in WLAN can make full use of existing network resources without the need to deploy a large number of additional radars, thereby saving costs.
- This application provides a radar test method and device, which are used to support the implementation of radar test in WLAN.
- a radar test method including: a first device generates a second type of scan frame, the second type of scan frame includes a radar signal; and the first device sends one or more The second type of scanning frame.
- the first device can implement radar testing by sending the second type of scanning frame during the beamforming training phase.
- the technical solution of the present application realizes the process compatibility between beamforming training and radar testing, so that the first device can perform beamforming training and radar testing at the same time, so that there is no need to allocate additional time domain resources for radar testing, which is beneficial to saving information. Make costs and resource costs.
- the technical solution of the present application can support the realization of radar testing in WLAN.
- the first device determines the number of sent scan frames of the second type according to the FSS value.
- the FSS value may be determined according to the beacon frame sent by the second device.
- the first device determines the number of sent scan frames of the second type according to the FSS value, including: the first device determines the number of sent scan frames of the second type according to the FSS value and the first correspondence. Number; wherein, the first correspondence is the correspondence between the FSS value and the number of sent scan frames of the second type.
- the second type scan frame is a second type sector scan SSW frame, or a second type short sector scan short SSW frame.
- the first corresponding relationship may be as shown in the following table:
- the time length of the radar signal in the second type of scanning frame is determined according to the following formula:
- TXTIME radar signal
- TXTIME first type scan frame
- SBIFS the interval between short beam forming frames
- x the first type corresponding to the FSS value
- y represents the number of sent second type scan frames corresponding to the FSS value.
- the first device determines the number of scan frames of the second type according to the FSS value, including: the first device determines the scan frame of the second type according to the FSS value and the time length of the radar signal The number of sent.
- the number of sent scan frames of the second type is determined according to the following formula:
- m represents the number of sent scan frames of the second type.
- the first device determines the number of scan frames of the second type to be sent according to the FSS value, including: the first device according to the FSS value, the length type of the radar signal, and the second correspondence, The number of sent scan frames of the second type is determined; wherein the second correspondence is the correspondence between the FSS value, the length type of the radar signal, and the number of sent scan frames of the second type.
- the sector scan time slot is determined according to the following formula:
- aSSSlotTime aAirPropagationTime+assduration+radar signal length*N+MBIFS+aSSFBDuration+MBIFS;
- aSSSlotTime represents the length of the sector scan time slot
- aAirPropagationTime represents the propagation delay between the first device and the second device
- assduration represents the time required for the first device to transmit the first type of scan frame under the corresponding FSS value
- radar signal length represents the time length of the radar signal in the second type of scan frame
- N represents the number of sent second type of scan frames
- aSSFBDuration represents the time required for the second device to perform the SSW feedback process
- MBIFS represents the interval between medium beamforming frames .
- the method further includes: the first device receives a beacon frame sent by the second device, where the beacon frame includes radar test information. Based on this design, because the beacon frame includes radar test information, the first device can perform corresponding radar tests in the beamforming training phase according to the radar test information.
- the radar test information includes at least one of the following parameters: radar data feedback type, radar signal length type, and indication information.
- radar data feedback type is used to indicate the radar test data to be fed back.
- the length type of the radar signal is used to determine the time length of the radar signal.
- the indication information is used to indicate one or more first devices that need to perform a radar test.
- the method further includes: the first device sends radar test data to the second device in a first SP, and the first SP is an SP used to feed back the radar test data. Based on this design, the second device can obtain radar test data.
- the method further includes: the first device sends an association request frame to the second device, where the association request frame is used to indicate whether the first device has a radar test capability.
- the first device sends an association request frame to the second device during the association phase, and the association request frame can be used to indicate whether the first device has the radar test capability.
- the second device can learn whether the first device can perform radar testing according to the association request frame, thereby avoiding the second device from scheduling the first device without radar testing capability to perform radar testing, thereby ensuring the radar test process Can be executed normally.
- a radar test method including: a second device generates a beacon frame, the beacon frame including radar test information. The second device sends a beacon frame to one or more first devices.
- the first device can perform corresponding radar tests in the beamforming training phase according to the radar test information.
- the radar test information includes at least one of the following parameters: radar data feedback type, radar signal length type, and indication information.
- radar data feedback type is used to indicate the radar test data to be fed back.
- the length type of the radar signal is used to determine the time length of the radar signal.
- the indication information is used to indicate one or more first devices that need to perform a radar test.
- the beacon frame further includes an FSS value, and the FSS value is used to determine the number of transmissions of the second type of scanning frame, and the second type of scanning frame includes a radar signal.
- the time length of the radar signal in the second type of scanning frame is determined according to the following formula:
- TXTIME radar signal
- TXTIME first type scan frame
- SBIFS the interval between short beam forming frames
- x the first type corresponding to the FSS value
- y represents the number of sent second type scan frames corresponding to the FSS value.
- the number of sent scan frames of the second type is determined according to the FSS value and the time length of the radar signal.
- the number of sent scan frames of the second type is determined according to the following formula:
- m represents the number of sent scan frames of the second type.
- the sector scan time slot is determined according to the following formula:
- aSSSlotTime aAirPropagationTime+assduration+radar signal length*N+MBIFS+aSSFBDuration+MBIFS;
- aSSSlotTime represents the length of the sector scan time slot
- aAirPropagationTime represents the propagation delay between the first device and the second device
- assduration represents the time required for the first device to transmit the first type of scan frame under the corresponding FSS value
- radar signal length represents the time length of the radar signal in the second type of scan frame
- N represents the number of sent second type of scan frames
- aSSFBDuration represents the time required for the second device to perform the SSW feedback process
- MBIFS represents the interval between medium beamforming frames .
- the method further includes: the second device receives the radar test data sent by the first device in the first SP, and the first SP is an SP used to feed back the radar test data.
- the method further includes: the second device receives an association request frame sent by the first device, the association request frame is used to indicate whether the first device has radar test capability; the second device according to the association request frame, Determine whether the first device has radar test capability.
- a radar test method including: a first device receives a first indication frame sent by a second device, the first indication frame is used to indicate radar test scheduling information; the first device sends to the second device The first response frame, the first response frame is used to respond to the first indication frame; the first device receives the second indication frame sent by the second device, and the second indication frame is used to instruct the first device to perform a radar test; the first device responds to the radar The scheduling information of the test is used for radar testing.
- the second device sends the first indication frame, so that the multiple first devices learn the scheduling information of the radar test. After that, the second device sends a second indication frame to the first device to uniformly schedule multiple first devices to perform radar tests according to the radar test scheduling information, thereby realizing multi-station radar testing.
- the radar test scheduling information includes at least one of the following parameters: radar SP information, radar data feedback type, and radar transceiver control information.
- the information of the radar SP includes the information of the second SP and the information of the third SP
- the second SP is the SP used for radar testing
- the third SP is the SP used to feed back radar test data.
- the radar data feedback type is used to indicate the radar test data to be fed back.
- the radar transceiver control information is used to indicate the function of each first device in the radar test among the M first devices, and M is a positive integer.
- the first device receiving the second indication frame sent by the second device includes: the first device receives the second indication frame sent by the second device in the second SP.
- the first device performs the radar test according to the radar test scheduling information, including: the first device performs the radar test according to the radar test scheduling information in the second SP.
- the first device performs the radar test according to the radar test scheduling information, including: if the first device serves as the transmitter of the radar, the first device sends the radar signal in a sector scan mode; If the first device serves as the receiving end of the radar, the first device receives the radar signal in a quasi-omnidirectional manner.
- the method further includes: the first device sends second response information to the second device in the second SP, and the second response information is used to indicate that the first device has completed the radar test.
- the method further includes: the first device receives third indication information sent by the second device, the third indication information is used to instruct the first device to feed back radar test data; the first device sends radar to the second device Test Data.
- the first device receiving the third indication information sent by the second device includes: the first device receives the third indication information sent by the second device in the third SP.
- the first device sending radar test data to the second device includes: the first device sends radar test data to the second device in the third SP.
- the method further includes: the first device sends an association request frame to the second device, where the association request frame is used to indicate whether the first device has a radar test capability.
- a radar test method including: a second device sends a first indication frame to M first devices, the first indication frame is used to indicate radar test scheduling information, and M is a positive integer; second The device receives the first response frame sent by each of the M first devices, the first response frame is used to respond to the first indication frame; the second device sends the second indication frame to the N first devices, the second The indication frame is used to instruct the first device to perform a radar test, the N first devices are a subset of the M first devices, and N is a positive integer less than or equal to M.
- the second device sends the first indication frame, so that the multiple first devices learn the scheduling information of the radar test. After that, the second device sends a second indication frame to the first device to uniformly schedule multiple first devices to perform radar testing according to the radar test scheduling information, thereby realizing multi-station radar testing.
- the radar test scheduling information includes at least one of the following parameters: radar SP information, radar data feedback type, and radar transceiver control information.
- the information of the radar SP includes the information of the second SP and the information of the third SP
- the second SP is the SP used for radar testing
- the third SP is the SP used to feed back radar test data.
- the radar data feedback type is used to indicate the radar test data to be fed back.
- the radar transceiver control information is used to indicate the function of each first device in the radar test among the M first devices, and M is a positive integer.
- the second device sending the second indication frame to the N first devices includes: the second device sending the second indication frame to the N first devices in the second SP.
- the method further includes: the second device receives the second response information sent by the first device in the second SP, and the second response information is used to indicate that the first device has completed the radar test.
- the method further includes: the second device sends third indication information to the first device, the third indication information is used to instruct the first device to feed back radar test data; the second device receives the radar sent by the first device Test Data.
- the second device sending the third indication information to the first device includes: the second device sends the third indication information to the first device in the third SP.
- the second device receiving the radar test data sent by the first device includes: the second device receives the radar test data sent by the first device in the third SP.
- the method further includes: the second device receives an association request frame sent by the first device, where the association request frame is used to indicate whether the first device has a radar test capability.
- a communication device may be a first device or a device in the first device.
- the device may include modules for executing the methods/operations/steps/actions described in the first aspect and any of the designs, or the method/operation/step/action described in the third aspect and any of the designs.
- the above-mentioned modules may be hardware circuits, or software, or implemented by hardware circuits combined with software.
- a communication device may be a second device or a device in the second device.
- the device may include modules for executing the second aspect and any of the designs, or the method/operation/step/action described in the fourth aspect and any of the designs.
- the above-mentioned modules may be hardware circuits, or software, or implemented by hardware circuits combined with software.
- a communication device in a seventh aspect, includes a processor and a transceiver.
- the processor is configured to perform processing operations in the radar test method involved in any of the designs of the first to fourth aspects, such as Generate second type scan frames and so on.
- the transceiver is used to accept the control of the processor to perform the transceiver operations in the radar test method designed in any one of the designs of the first aspect to the fourth aspect, such as sending the second type of scanning frame.
- a computer-readable storage medium is provided.
- the computer-readable storage medium is used to store instructions.
- the instructions are read by a computer, the computer is used to execute any one of the above-mentioned designs in the first to fourth aspects.
- the radar test method involved.
- a computer program product includes instructions.
- the computer reads the instruction, the computer executes the radar test method involved in any one of the above-mentioned first to fourth aspects.
- a chip in a tenth aspect, includes a processing circuit and a transceiver pin.
- the chip also includes a memory.
- the processing circuit is used to perform processing operations in the radar test method involved in any one of the possible designs of the first aspect to the fourth aspect, such as generating a second type of scan frame.
- the transceiver pin is used to receive the control of the processing circuit, and execute the transceiver operation in the radar test method involved in any one of the possible designs of the first aspect to the fourth aspect, such as sending the second type of scanning frame.
- the memory is used to store instructions, which are called by the processor to perform processing operations in the radar test method involved in any one of the first to fourth aspects.
- a communication system including: a first device and a second device.
- the first device is used to execute the radar test method involved in any one of the above-mentioned first aspect or the third aspect;
- the second device is used to implement any one of the above-mentioned design involved in the second or fourth aspect Radar test method.
- the technical effects brought by any one of the designs of the fifth aspect to the eleventh aspect can refer to the beneficial effects in the corresponding method provided above, which will not be repeated here.
- FIG. 1 is a schematic structural diagram of a beacon interval provided by an embodiment of this application.
- FIG. 2 is a schematic diagram of a flow of beamforming training provided by an embodiment of this application.
- FIG. 3 is a flowchart of a radar test method provided by an embodiment of the application.
- FIG. 4 is a schematic diagram of a radar signal in the head of a second-type scanning frame provided by an embodiment of the application;
- FIG. 5 is a schematic diagram of a radar signal in the middle of a second type of scanning frame provided by an embodiment of the application;
- FIG. 6 is a schematic diagram of a radar signal at the end of a second type of scanning frame provided by an embodiment of the application;
- FIG. 7 is a schematic diagram of a scenario where a first device sends a scan frame of a first type according to an embodiment of the application
- FIG. 8 is a schematic diagram of a single-station radar test scenario provided by an embodiment of the application.
- FIG. 9 is a schematic diagram of a multi-station radar test scenario provided by an embodiment of the application.
- FIG. 10 is a flowchart of a radar testing method provided by an embodiment of the application.
- FIG. 11 is a schematic diagram of a frame structure of a beacon frame provided by an embodiment of this application.
- FIG. 12 is a schematic diagram of another frame structure of a beacon frame provided by an embodiment of this application.
- FIG. 13 is a flowchart of a capability reporting method provided by an embodiment of the application.
- FIG. 14 is a schematic structural diagram of an EMDG capabilities element provided by an embodiment of the application.
- FIG. 15 is a feedback method of radar test data provided by an embodiment of the application.
- FIG. 16 is a schematic diagram of a frame structure of an SPR frame provided by an embodiment of this application.
- FIG. 17 is a timing diagram of a radar test provided by an embodiment of the application.
- FIG. 18 is a flowchart of a radar test method provided by an embodiment of the application.
- FIG. 19 is a schematic diagram of a frame structure of a first indication frame provided by an embodiment of this application.
- FIG. 21 is a timing diagram of a radar test provided by an embodiment of the application.
- 22 is a schematic structural diagram of a communication device provided by an embodiment of this application.
- FIG. 23 is a schematic structural diagram of a communication device provided by an embodiment of this application.
- indication may include direct indication and indirect indication, as well as explicit indication and implicit indication.
- the information indicated by a certain piece of information is called information to be instructed.
- the information to be indicated may be directly indicated, wherein the information to be indicated itself or the index of the information to be indicated, etc.
- the information to be indicated can also be indicated indirectly by indicating other information, where there is an association relationship between the other information and the information to be indicated.
- it is also possible to realize the indication of specific information by means of the arrangement sequence of each information agreed in advance (for example, as stipulated in the agreement), thereby reducing the indication overhead to a certain extent.
- the radar can be divided into single station radar, bistatic radar and multistatic radar.
- the transmitter and receiver of a single station radar are co-located.
- the receiving end and transmitting end of bistatic radar and multistatic radar are physically separated.
- Beacon interval (beacon interval, BI)
- BI includes beacon header indication (BHI) and data transmission interval (DTI).
- BHI includes: beacon transmission interval (BTI), association-beamforming training (A-BFT), and announcement transmission interval (ATI).
- DTI can be divided into several sub-intervals. Among them, there are two types of sub-intervals: contention-based access period (CBAP) and service period (SP).
- CBAP contention-based access period
- SP service period
- DTI may include CBAP1, CBAP2, SP1, SP2, and so on.
- the PCP/AP will send multiple beacon (beacon) frames according to the sector number to perform downlink sector scanning.
- a station In A-BFT, a station (station, STA) can be associated with a personal basic service set control point (PCP) or an access point (access point, AP), and the STA can perform uplink sectors scanning.
- PCP personal basic service set control point
- AP access point
- PCP/AP can poll multiple STAs for cached data information and allocate resources in DTI to STAs.
- the transmitting beam may refer to the distribution of signal strength in different directions in space after a signal is transmitted through the antenna
- the receiving beam may refer to the signal strength distribution of the wireless signal received from the antenna in different directions in space.
- the beam can be a wide beam, or a narrow beam, or other types of beams.
- the beam forming technology may be beamforming technology or other technologies.
- the beamforming technology may specifically be a digital beamforming technology, an analog beamforming technology, or a hybrid digital/analog beamforming technology, etc.
- Beamforming also called beamforming and spatial filtering, is a signal processing technology that uses a sensor array to send and receive signals directionally.
- Beamforming training is used to form an aligned transmit beam and receive beam between the sender and receiver, so that the sender and receiver can communicate normally.
- beamforming training mainly includes two parts: Sector-Level Sweep (SLS) and Beam Refinement Protocol (BRP)
- SLS includes the following stages:
- the initiator sector scan (ISS) stage is used to train the initiator's directional transmission beam.
- the initiator sends training data with a certain width beam orientation, and the responder receives the training data in a quasi-omnidirectional manner.
- the responder sector scan (RSS) stage is used to train the responder's directional transmission beam.
- the responder sends training data with a certain width of beam directional and contains the best sending sector information of the initiator in the previous stage. At this time, the initiator receives the training data in a quasi-omnidirectional manner.
- the initiator sends feedback information to the responder.
- the feedback information is a list of sectors sent by the initiator sorted by sector quality and contains the best sector of the responder in the previous stage.
- the responding party is now in a quasi-omnidirectional receiving mode.
- Sector Scanning Acknowledgement (SSW ACK) is used for responding to the initiator to feed back a list of sectors sent by the responding party sorted by quality.
- SSW ACK is optional.
- SLS may be executed before DTI without the SSW ACK phase, and SSW ACK phase is required to execute SLS in the DTI phase.
- BRP includes the following stages:
- the initial setup (BRP setup) stage is used to configure subsequent multi-sector ID detection (MID) and beam pairing (Beam Combining, BC) training information.
- MID multi-sector ID detection
- Beam Combining, BC Beam Combining
- the MID phase is used to train the best receiving beams of the initiator and the responder.
- the method is similar to the training process of the best sending beam, except that the training data is sent in the quasi-omnidirectional mode and the training data is received in the directional mode.
- the BC stage is used to pair the receiving and transmitting beams trained in the SLS and MID stages to obtain the best pairing of the receiving and transmitting beams to find the best directional communication link. At this time, both sending and receiving training data adopt the directional mode.
- At least one round of beam refinement (BRT) stage is used to perform further beam refinement, so as to iteratively find more refined beam pairs and improve the quality of the communication link.
- the radar test data may include at least one of the following parameters:
- Channel state information (channel state information, CSI).
- CSI is used to reflect the state of the channel.
- the CSI may include at least one of the following parameters: precoding matrix indicator (PMI), rank indicator (RI), channel quality indicator (CQI), channel state information Reference signal resource indicator (CSI-RS resource indicator, CRI) and layer indicator (layer indicator, LI).
- the sampling data of the time-domain signal includes: each sampling point and the corresponding sampling value of the time-domain signal without fast Fourier numbering.
- the FFT spectrum is obtained by FFT transformation of the sampled digital signal.
- the FFT spectrum can be a rang-FFT spectrum, a doppler-FFT spectrum, or an angle-FFT spectrum.
- (4) Radar test results including: distance, speed, and angle.
- the distance is the distance between the measured object and the radar.
- the speed is the speed of the measured object.
- the angle is the angle between the measured object and the radar.
- the distance can be determined according to the value of the abscissa corresponding to the peak in the range-FFT spectrum.
- the speed can be based on the value of the abscissa corresponding to the peak in the doppler-FFT spectrum.
- the angle can be determined according to the value of the abscissa corresponding to the peak in the angle-FFT spectrum.
- the FSS value is used to determine the number of short SSW/SSW frames sent in the sector scan slot. As shown in Table 1, the current standard defines the correspondence between the FSS value and the number of short SSW/SSW frames sent.
- the standard adopted by the WLAN may be the IEEE 802.11 standard, such as the 802.11ad standard, the 802.11ay standard, and the next-generation 802.11 standard.
- the technical solution of the present application can also be applied to a cellular communication system, such as a fourth generation (4G) communication system and a fifth generation (5G) communication system.
- a cellular communication system such as a fourth generation (4G) communication system and a fifth generation (5G) communication system.
- the applicable scenarios of the technical solution of the present application include: a communication scenario between the first device and the second device, a communication scenario between the first device and the first device, and a communication scenario between the second device and the second device.
- the first device may be an STA.
- STAs can have different names, such as subscriber unit, access terminal, mobile station, mobile station, mobile device, terminal, user equipment, and so on.
- STAs can be cellular phones, smart phones, wireless local loops (WLL), and other handheld devices and computer devices with wireless local area network communication functions.
- the second device may be a base station, PCP or AP.
- APs can be wireless routers, wireless transceivers, wireless switches, etc.
- the technical solution of the present application is mainly introduced from the communication scenario between the first device and the second device, and technical solutions in other scenarios can be implemented with reference to the communication scenario between the first device and the second device.
- a radar test method provided by an embodiment of this application includes:
- the first device generates a second type of scan frame, where the second type of scan frame includes a radar signal.
- the second type scanning frame may be a second type short SSW frame or a second type SSW frame.
- the embodiments of the present application refer to the short SSW frame/SSW frame in the prior art as the first type scanning frame. It can be understood that the second type of scanning frame is equivalent to a combination of the first type of scanning frame and the radar signal. Compared to the first type of scan frame, the second type of scan frame can be used for radar testing.
- the radar signal carried in the second type of scanning frame can be realized by using the existing information in the current short SSW/SSW frame.
- the radar signal carried in the second type of scanning frame may be carried in a new independent field (or called a bit field).
- This embodiment of the application does not limit the position of the field used to carry radar signals in the second type of scanning frame.
- the field carrying radar signals may be located at the beginning, middle, or end of the second type of scanning frame.
- FIG. 4 a schematic diagram of a radar signal in the head of a second type scanning frame provided by an embodiment of this application.
- FIG. 5 a schematic diagram of a radar signal in the middle of a second-type scanning frame provided by an embodiment of this application.
- FIG. 6 a schematic diagram of a radar signal at the end of a second-type scanning frame provided by an embodiment of this application.
- the radar signal may be a sequence or data used for radar testing, and the embodiment of the present application is not limited thereto.
- the first device sends one or more scan frames of the second type in the beamforming training phase.
- the beamforming training stage can be A-BFT.
- A-BFT includes multiple sector scan time slots (an SSW slot, aSSSlotTime)
- step S102 can also be specifically implemented as: the first device sends one or more second Type scan frame.
- the first device before sending the second type of scan frame, the first device needs to determine the number of the second type of scan frame sent in a sector scan time slot. In this way, the first device can send a corresponding number of scan frames of the second type in the sector scan time slot to implement beamforming training.
- the number of sent scan frames of the second type in a sector scan slot is referred to as the number of sent scan frames of the second type in the following, which will be described in a unified manner, and will not be repeated hereafter.
- the first device may determine the number of sent scan frames of the second type according to the FSS value.
- the FSS value may be indicated by the second device.
- the second device sends a beacon frame to the first device, and the beacon frame includes the FSS value.
- the first device determines the number of frames sent of the second type according to the FSS value, including the following implementation manners:
- Implementation manner 1 The first device determines the number of sent scan frames of the second type according to the FSS value and the first correspondence.
- the first correspondence is the correspondence between the FSS value and the number of sent scan frames of the second type. It should be noted that the first correspondence relationship may be pre-configured or defined in the standard, which is not limited in the embodiment of the present application.
- the first corresponding relationship may be as shown in Table 2 below.
- a, b, c, d, e, f, g, h, i, j, k, l, n, m, o, p, A, B, C, D, E, F, G, H, I, J, K, L, N, M, O, and P are all integers greater than or equal to zero.
- the first correspondence relationship may be as shown in some columns in Table 3.
- Table 3 not only shows the correspondence between the FSS value and the number of sent scan frames of the second type, but also shows the correspondence between the FSS value and the number of sent scan frames of the first type.
- the time length of the radar signal in the second type of scanning frame may be pre-configured, or may be determined by the first device according to the following formula (1).
- the first device can determine the time length of the radar signal in the second type of scanning frame according to the following formula (1).
- TXTIME radar signal
- TXTIME first type scan frame
- SBIFS the interval between short beam forming frames
- x represents the first type corresponding to the FFS value
- y represents the number of sent second type scan frames corresponding to the FSS value.
- the first device determines the number of scanned frames of the second type to be sent according to the FSS value, the length type of the radar signal, and the second correspondence relationship.
- the second correspondence is the correspondence between the FSS value, the length type of the radar signal, and the number of sent scan frames of the second type. It should be noted that the second correspondence relationship may be pre-configured or defined in the standard, and the embodiment of the present application is not limited thereto.
- the second correspondence can also be expressed as: the correspondence between the length type of the radar signal and the first correspondence. That is, for the first device, there is a first corresponding relationship that matches the length type of each radar signal. In this case, the first device determines the number of scan frames sent of the second type according to the FSS value, the length type of the radar signal, and the second correspondence. This can be specifically implemented as follows: the first device according to the length type of the radar signal, The first corresponding relationship that matches the length type of the radar signal is determined; then, the first device determines the number of sent scan frames of the second type according to the FSS value and the first corresponding relationship that matches the length type of the radar signal.
- the length type of the radar signal is used to directly indicate the time length of the radar signal.
- the length type of each radar signal directly indicates the time length of a radar signal.
- the length type of the radar signal includes a first length type, a second length type, and a third length type.
- the time length of the radar signal indicated by the first length type is 4 us
- the time length of the radar signal indicated by the second length type is 8 us
- the time length of the radar signal indicated by the third length type is 12 us.
- the first corresponding relationship matching the first length type may be shown in Table 4 below.
- the first corresponding relationship matching the second length type may be shown in Table 5 below.
- the first corresponding relationship matching the third length type may be shown in Table 6 below.
- the number of sent scan frames of the second type may also be 1.
- the length type of the radar signal is used to indicate the time length of the radar signal indirectly.
- the length type of the radar signal is used to characterize the range of the time length of the radar signal.
- the length type of the radar signal includes a first length type, a second length type, and a third length type.
- the first length type corresponds to the first value range
- the second length type corresponds to the second value range
- the third length type corresponds to the third value range.
- the first value range is smaller than the second value range
- the second value range is smaller than the third value range.
- the first value range may be 0-4.9us
- the second value range may be 0-19.6us
- the third value range may be 0-29.4us.
- Table 7 shows the corresponding first correspondence and the time length of the radar signal corresponding to each FSS value.
- Table 8 shows the corresponding first correspondence and the time length of the radar signal corresponding to each FSS value.
- Table 9 shows the corresponding first correspondence and the time length of the radar signal corresponding to each FSS value.
- Implementation mode 3 The first device determines the number of sent scan frames of the second type according to the time length of the radar signal and the FSS value.
- the time length of the radar signal may be pre-configured.
- the second device sends a beacon frame to the first device, and the beacon frame includes the time length of the radar signal.
- the time length of the radar signal is defined in the standard.
- the time length of the radar signal is determined by the first device according to actual application scenarios.
- the number of sent scan frames of the second type may be determined according to the following formula (2):
- m represents the number of sent scan frames of the second type. Indicates rounding down.
- Implementation manner 4 The first device determines the number of sent scan frames of the second type according to the maximum value of the time length of the radar signal and the FSS value.
- the maximum value of the time length of the radar signal may be pre-configured.
- the second device sends a beacon frame to the first device, and the beacon frame includes the maximum value of the time length of the radar signal.
- the maximum value of the time length of the radar signal is defined in the standard.
- the maximum value of the time length of the radar signal is determined by the first device according to the actual application scenario.
- the number of sent scan frames of the second type may be determined according to the following formula (3):
- TXTIME radar signal max
- Implementation manner 5 The first device determines the number of sent scan frames of the second type according to the minimum time length of the radar signal and the FSS value.
- TXTIME radar signal min
- the third, the fourth, and the fifth when the first device sends the second type of short SSW frame, the above formulas (1), (2), (3), (4)
- the parameter TXTIME (first type scan frame) in can be replaced with TXTIME (shortSSW).
- TXTIME (shortSSW) represents the time length of the first type of short SSW frame.
- the parameter TXTIME (first type scan frame) in the above formulas (1), (2), (3), (4) can be replaced with TXTIME (SSW).
- TXTIME (SSW) represents the time length of the first type of SSW frame.
- the sector scan time slot can be calculated according to the formula in the prior art.
- Implementation mode 6 The first device determines the number of scan frames of the first type to be sent according to the FSS value and the relationship between the FSS value and the number of scan frames of the first type, and then determines the number of scan frames of the second type. number. That is to say, for the same FSS value, the number of sent scan frames of the first type and the number of sent scan frames of the second type are the same.
- the sector scan time slot can be determined according to the following formula (5):
- aSSSlotTime represents the time length of the sector scan slot.
- aAirPropagationTime represents the propagation delay between the first device and the second device.
- assduration represents the time required for the first device to transmit the first type of scan frame under the corresponding FSS value
- radar signal length represents the time length of the radar signal in the second type of scan frame
- N represents the number of sent second type scan frames
- aSSFBDuration represents The time required for the second device to perform the SSW feedback process.
- MBIFS represents the medium beamforming interframe interval.
- the time length of the sector scan time slot determined based on formula (5) is larger. That is, the embodiment of the present application expands the length of the sector scan time slot, so that the number of the second type of scan frames sent by the first device that conducts the radar test can be equal to that of the first device that does not conduct the radar test. The number of scanning frames of the first type is the same, so as to ensure that the first device performing the radar test can achieve more accurate beamforming training.
- the first device that does not perform radar testing is in the sector scan time slot, and the first device needs to send the first type of scan frame after sending the additional time length of the radar signal.
- the same empty packet is used to ensure that the sector scan time slot of the first device not performing the radar test is the same in time length as the sector scan time slot of the first device performing the radar test.
- the first device can implement radar testing by sending the second type of scanning frame during the beamforming training phase.
- the technical solution of the present application realizes the process compatibility between beamforming training and radar testing, so that the first device can perform beamforming training and radar testing at the same time, so that there is no need to allocate additional time domain resources for radar testing, which is beneficial to saving information. Make costs and resource costs.
- the technical solution of the present application can support the realization of radar testing in WLAN.
- the technical solution shown in Figure 3 can realize single-station radar testing. That is, after the first device sends the second type of scan frame, the first device still needs to receive the reflected wave of the radar signal to complete the radar test. As shown in FIG. 8, STA1 transmits the second type of scanning frame, and STA1 receives the reflected wave of the radar signal.
- the technical solution shown in Figure 3 can also implement multi-station radar testing. That is, one first device sends the second type of scanning frame, and other first devices receive the reflected wave of the radar signal. As shown in Figure 9, STA1 sends the second type of scanning frame, and STA2 and STA3 receive the reflected wave of the radar signal.
- a radar test method provided in an embodiment of this application includes the following steps:
- the second device sends a beacon frame to one or more first devices, so that the one or more first devices receive the beacon frame sent by the second device.
- the beacon frame includes radar test information.
- the radar test information includes at least one of the following parameters: radar data feedback type, radar signal length type, and indication information.
- the radar data feedback type is used to indicate the radar test data to be fed back.
- the radar data feedback type is used to instruct the first device to feed back the content included in the radar test data.
- the radar data feedback type may only indicate that the first device feeds back the sampling data of the time domain signal.
- the radar data feedback type may indicate that the first device feeds back the sampling data of the time domain signal and the FFT spectrum.
- the length type of the radar signal is used to determine the time length of the radar signal.
- the length type of the radar signal is used to directly indicate the time length of the radar signal.
- the length type of the radar signal is used to characterize the value range of the radar signal.
- Various length types of radar signals may be predefined in the standard, such as a first length type, a second length type, and a third length type, and the embodiment of the present application is not limited thereto.
- the indication information is used to indicate one or more target first devices, and the target first devices are the first devices that need to perform a radar test.
- the indication information includes one or more target first device information, and the target first device information may be an association identifier (AID).
- AID association identifier
- the indication information may include: a bitmap offset value (bitmap offset) and a partial virtual bitmap (partial virtual bitmap).
- the bitmap offset value is used to determine the AID corresponding to the first bit in the partial virtual bitmap. For example, if the bitmap offset value is 300, the AID corresponding to the first bit in the partial virtual bitmap is 300.
- Each bit in the partial virtual bitmap corresponds to an AID, and different bits correspond to different AIDs.
- the two AIDs corresponding to the two bits are also adjacent.
- the AID corresponding to the first bit in some virtual bitmaps is 300
- the AID corresponding to the second bit is 301
- the AID corresponding to the third bit is 302, and so on, and will not be repeated.
- the value of each bit is used to indicate whether the first device with the AID corresponding to the bit needs to perform a radar test. For example, in some virtual bitmaps, if the value of a bit is "0", the first device with the AID corresponding to the bit does not need to perform radar testing; if the value of a bit is "1", it has The first device of the AID corresponding to this bit needs to perform a radar test.
- instruction information may also adopt other implementation manners, and the embodiment of the present application is not limited thereto.
- the beacon frame is used to instruct the first device to perform a radar test in the beamforming training phase.
- the beacon frame is used to instruct the first device to send the second type of scanning frame in the beamforming training phase.
- the beacon frame specifically includes the following two situations:
- Case 1 The beacon frame is used to instruct the first device with radar test capability to perform radar test in the beamforming training phase.
- the first device regardless of whether the first device has an association relationship with the second device, when the first device has radar test capability, after the first device receives the beacon frame, the first device performs the beamforming training phase Radar test.
- the beacon frame includes at least the following bit fields: frame control, duration, basic service set ID (Basic Service Set ID, BSSID), radar element (radar element), and FCS.
- BSSID Basic Service Set ID
- radar element radar element
- FCS FCS
- the radar unit bit field includes at least the following bit fields: radar parameter and radar signal length type.
- the radar parameter bit field is used to carry the radar data feedback type.
- the radar signal length type bit field is used to indicate the length type of the radar signal.
- the radar parameter bit field includes at least the following bit fields: CSI, before FFT, FFT info, FFT result, and reserved.
- the CSI bit field is used to indicate whether the first device feeds back CSI.
- the CSI bit field can be implemented with 1 bit.
- the value of the CSI bit field is "0", which means that the first device does not need to feed back CSI; the value of the CSI bit field is "1", which means that the first device needs to feed back CSI.
- the before FFT bit field is used to indicate whether the first device feeds back the sampling data of the time domain signal.
- the before FFT bit field can be implemented with 1 bit.
- the value of the before FFT bit field is "0", indicating that the first device does not need to feed back the sampling data of the time domain signal; the value of before FFT bit field is "1", which indicates that the first device needs to feed back the sampling data of the time domain signal .
- the FFTinfo bit field is used to indicate whether the first device feeds back the FFT spectrum.
- the FFTinfo bit field can be implemented with 1 bit.
- the value of the FFTinfo bit field is "0", which means that the first device does not need to feed back the FFT map; the value of the FFTinfo bit field is "1", which means that the first device needs to feed back the FFT map.
- the FFT result bit field is used to indicate whether the first device feeds back the radar test result.
- the FFT result bit field can be implemented with 1 bit.
- the value of the FFT result bit field is "0", which indicates that the first device does not need to feed back the radar test result; the value of the FFT result bit field is "1", which indicates that the first device needs to feed back the radar test result.
- the CSI bit field may also be called the first indicator bit field
- the before FFT bit field may also be called the second indicator bit field
- the FFT info bit field may also be called the third indicator bit field
- FFT result The bit field may also be referred to as the fourth indication bit field, and the embodiment of the present application is not limited thereto.
- Case 2 The beacon frame is used to instruct one or more first devices having an association relationship with the second device to perform radar testing in the beamforming training phase.
- the second device may select a first device with radar test capability from a plurality of first devices having an association relationship with the second device to perform radar test in the beamforming training phase. It should be noted that the first device can establish an association relationship with the second device in the previous BI according to the capability reporting method shown in Figure 13 below, and enable the second device to learn whether the first device has radar test capabilities.
- FIG. 12 a schematic diagram of a frame structure of a beacon frame provided in an embodiment of this application.
- the radar unit bit field of the beacon frame shown in FIG. 12 further includes the following bit fields: a bitmap offset value and a part of a virtual bitmap.
- the beacon frame may not include the indication information.
- the beacon frame must include indication information.
- S202 The target first device sends one or more second-type scan frames in the beamforming training phase.
- the target first device is the first device with radar test capability.
- the target first device is determined according to the indication information carried in the beacon frame.
- step S202 reference may be made to the embodiment shown in FIG. 3, which will not be repeated here.
- the first device that does not perform radar testing performs beamforming training in a traditional manner. That is, the first device that does not perform the radar test sends one or more scan frames of the first type in the beamforming training phase.
- the second device sends a beacon frame to trigger the first device to perform radar testing in the beamforming training phase, thereby supporting the implementation of radar testing in WLAN.
- a capability reporting method provided by an embodiment of this application includes the following steps:
- S301 The first device sends an association request (Association Request) frame to the second device, so that the second device receives the association request frame sent by the first device.
- association Request Association Request
- association request frame is used to establish an association relationship between the first device and the second device.
- association request frame is also used to indicate whether the first device has a radar test capability. It is understandable that the first device with radar testing capability can perform radar testing; the first device without radar testing capability cannot perform radar testing.
- the association request frame sent by the first device with radar test capability includes radar test capability information.
- the association request frame sent by the first device without radar test capability does not include radar test capability information.
- the radar test capability information is used to indicate that the first device has a radar test capability. Further, the radar test capability information may also be used to indicate the relevant information of the first device for radar test, for example: the type of radar supported by the first device. Among them, radar types include: single-station radar, dual-station radar, and multi-station radar.
- the radar test capability information may be carried in an independent field in the association request frame.
- the directional multi-gigabit (DMG)/enhanced directional multi-gigabit (EDMG) capability element in the association request frame uses the radar capability (radar capability) field to carry the radar test Ability information.
- FIG. 14 shows a schematic structural diagram of an EMDG capabilities element in an embodiment of the present application.
- association request frame includes the radar capability field, it means that the association request frame contains radar test capability information; if the association request frame does not include the radar capability field, it indicates that the association request frame does not include radar test capability information.
- the second device determines whether the first device has a radar test capability according to the association request frame.
- the second device can determine that the first device has radar test capability; if the association request frame does not include radar test capability information, the The second device can determine that the first device does not have radar test capability.
- the first device sends an association request frame to the second device during the association phase, and the association request frame may be used to indicate whether the first device has the radar test capability.
- the second device can learn whether the first device can perform radar testing according to the association request frame, thereby avoiding the second device from scheduling the first device without radar testing capability to perform radar testing, thereby ensuring the radar test process Can be executed normally.
- the technical solution shown in FIG. 13 can make the reporting process of the radar capability compatible with the existing correlation process, so that the first device does not need to perform additional steps.
- a feedback method for radar test data provided in this embodiment of the application includes the following steps:
- the first device sends radar test data to the second device in the first SP, so that the second device receives the radar test data sent by the first device in the first SP.
- the first SP is the SP used to feed back the radar test data.
- the process of determining the first SP may refer to steps S501-S503.
- the second device sends a poll frame to the first device in the ATI phase, so that the first device receives the poll frame sent by the second device in the ATI phase.
- the polling frame is used to trigger the first device to send the SPR frame.
- S502 The first device sends a service period request (SPR) frame to the second device in the ATI phase, so that the second device receives the SPR frame sent by the first device in the ATI phase.
- SPR service period request
- the SPR frame is used to request the second device to allocate the first SP to the first device.
- the SPR frame is used to request feedback of radar test data.
- FIG. 16 it is a schematic diagram of the frame structure of the SPR frame.
- the SPR frame includes the following bit fields: frame control (frame control), duration (duration), receiving address (RA), transmitting address (TA), dynamic allocation information (dynamic allocation info), beamforming Control (BF control) and frame check sequence (FCS).
- frame control frame control
- duration duration
- RA receiving address
- TA transmitting address
- TA dynamic allocation information
- dynamic allocation info dynamic allocation info
- BF control beamforming Control
- FCS frame check sequence
- the dynamic allocation information bit field includes at least the following bit fields: traffic identifier (TID), allocation type (allocation type), source (source) AID, destination (destination) AID, allocation duration (allocation duration), And reserved (reserved).
- TID traffic identifier
- allocation type allocation type
- source source
- destination destination
- allocation duration allocation duration
- allocation duration allocation duration
- reserved reserved
- the SPR frame provided in the embodiment of this application plans a new combination (or called value) in the allocation type bit field to indicate that the SPR frame is used to request the second device Assign the SP used to feed back the radar test data to the first device.
- allocation type bit field consists of 3 bits, the first bit can be recorded as Bit4, the second bit can be recorded as Bit5, and the third bit can be recorded as Bit6.
- each bit in the allocation type bit field and the corresponding meaning can refer to Table 10.
- allocation type bit field of the SPR frame may also adopt other preset values (for example, "111") to indicate the meaning "Radar-SP for radar data feedback”.
- S503 The second device sends an announcement frame to the first device in the ATI phase, so that the first device receives the announcement frame sent by the first device in the ATI phase.
- the announcement frame includes the information of the first SP.
- the first device sends radar test data to the second device at a predetermined first SP, so that the second device can obtain the radar test data.
- FIG. 10 The technical solutions shown in FIG. 10, FIG. 13 and FIG. 15 will be described in detail below with reference to FIG. 17 by way of example.
- the AP sends a beacon frame to STA1 to instruct STA1 to perform radar testing in the beamforming training phase.
- STA1 sends the second type scan frame in the form of sector scan. After that, the AP will execute SSW feedback. STA1 performs SSW ACK.
- STA1 and AP send an association request frame to each other to establish an association request frame between STA1 and AP.
- the association request frame sent by STA1 may include radar test capability information, so that the AP knows that STA1 has radar test capability. If there is an association relationship between STA1 and AP, the process of sending association request frames between STA1 and AP can be omitted.
- the AP can send a polling frame to STA1.
- STA1 sends an SPR frame to the AP to request the AP to allocate an SP for feedback of radar test data.
- the AP sends an announcement frame to STA1, and the announcement frame includes information about the SP used to feed back the radar test data.
- STA1 actively feeds back the radar test data in the SP used to feed back the radar test data.
- a radar test method provided by an embodiment of this application includes the following steps:
- the second device sends a first indication frame to M first devices, so that the M first devices receive the first indication frame.
- each of the M first devices has a radar test capability. It is understandable that the second device can determine whether a first device has the radar test capability according to the technical solution shown in FIG. 13.
- the second device sends the first indication frame to M first devices in the ATI phase.
- each of the M first devices receives the first indication frame sent by the second device in the ATI phase.
- M is a positive integer.
- the first indication frame is used to indicate the scheduling information of the radar test.
- the scheduling information of the radar test includes one of the following parameters: radar data feedback type, radar SP information, radar receiving and sending control information.
- the information of the radar SP includes at least the information of the second SP and the information of the third SP.
- the second SP is the SP used for radar testing.
- the third SP is the SP used to feed back the radar test data.
- the information of the radar SP may include: time domain resources of the second SP, time domain resources of the third SP, and so on.
- the radar transceiver control information is used to indicate the function of each first device in the M first devices during the radar test. In other words, the radar transceiver control information is used to indicate whether each of the M first devices is the receiving end or the transmitting end of the radar. In other words, the radar transceiver control information is used to indicate the first device as the radar receiving end and the first device as the radar transmitting end among the M first devices.
- the first indication frame further includes the radar test type.
- Radar test types include: single-station radar test and multi-station radar test.
- the first indication frame includes at least one of the following bit fields: frame control, duration, sending address, receiving address, radar test type, radar element, and frame check sequence.
- the radar unit bit field includes at least the following bit fields: radar parameters, radar SP, and radar sender/receiver control (radar sender/receiver control).
- radar parameter bit field can refer to the related description above (for example, the related description of the radar parameter bit field in the beacon frame shown in FIG. 12), which will not be repeated here.
- the radar SP bit field is used to carry radar SP information.
- the radar transmit/receive control bit field is used to carry radar information.
- the M first devices send first response frames to the second device respectively, so that the second device accepts the first response frames sent by the M first devices respectively.
- the first response frame is used to respond to the first indication frame.
- the first response frame is used to indicate that the first device has received the first indication frame.
- the first device sends a first response frame to the second device in the ATI phase.
- the second device receives the first response frame sent by the first device in the ATI phase.
- the second device sends a second indication frame to N first devices, so that the N first devices receive the second indication frame sent by the second device.
- the second indication frame is used to instruct the N first devices to perform a radar test.
- the second indication frame may be implemented in the form of a trigger frame.
- N first devices are a subset of the M first devices.
- N is a positive integer less than or equal to M.
- the second device sends a second indication frame to N first devices in the second SP.
- each of the N first devices receives the second indication frame sent by the second device in the second SP.
- the N first devices perform a radar test according to the scheduling information of the radar test.
- the N first devices perform a radar test in the second SP. Specifically, for any first device among the N first devices, if the first device serves as the transmitter of the radar, the first device sends radar signals in a sector scan mode; if the first device serves as a radar The first device receives the radar signal in a quasi-omnidirectional manner.
- each of the N first devices may send second response information to the second device.
- the second response information is used to indicate that the first device has Complete the radar test.
- step S603 and step S604 can be performed multiple times. That is, the second device may send the second indication frame to the N first devices multiple times, so that the N first devices perform multiple rounds of radar testing.
- the first device as the radar transmitting end may be different. For example, during the first round of radar testing, STA1 sends radar signals, and STA2 and STA3 receive radar signals. In the second round of radar testing, STA2 sends radar signals, and STA3 and STA4 receive radar signals.
- the second device sends the first indication frame, so that multiple first devices learn the scheduling information of the radar test. After that, the second device sends a second indication frame to the first device to uniformly schedule multiple first devices to perform radar tests according to the radar test scheduling information, thereby realizing multi-station radar testing.
- a method for feeding back radar test data includes the following steps:
- the second device sends a third indication frame to the first device that performs the radar test, so that the first device that performs the radar test receives the third indication frame.
- the third instruction frame is used to instruct the first device performing radar test to feed back radar test data.
- the third indication frame may be implemented in the form of a trigger frame or a polling frame.
- the second device sends a third indication frame to the first device performing the radar test in the third SP.
- the first device performing the radar test receives the third indication frame sent by the second device in the third SP.
- the first device that performs the radar test sends radar test data to the second device, so that the second device receives the radar test data.
- the first device that performs the radar test sends radar test data to the second device in the third SP.
- the second device receives the radar test data sent by the first device performing the radar test in the third SP.
- the second device sends a third indication frame to the first device, so that the first device feeds back the radar test data.
- the second device can synthesize the radar test data fed back by the multiple first devices to effectively analyze the relevant information (such as the spatial position) of the measured object.
- FIGS. 18 and 20 will be described in detail below with reference to FIG. 21 by way of example.
- the AP sends the first indication frame to STA1, STA2, and STA3; after that, STA1, STA2, and STA3 respectively send the first response frame to the AP.
- STA1 sends radar signals in a sector scan manner
- STA2 and STA3 receive radar signals in a quasi-omnidirectional manner
- STA2 sends radar signals in a sector scan manner
- STA1 and STA3 receive radar signals in a quasi-omnidirectional manner
- STA3 sends radar signals in a sector scan manner
- STA1 and STA2 receive radar signals in a quasi-omnidirectional manner.
- the AP sends third indication frames to STA1, STA2, and STA3 respectively; STA1, STA2, and STA3 respectively send radar test data to the AP.
- each network element such as the first device and the second device, in order to implement the above-mentioned functions, includes a hardware structure and/or software module corresponding to each function.
- the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.
- the embodiment of the present application may divide the device into functional modules according to the foregoing method examples.
- each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module.
- the above-mentioned integrated modules can be implemented in the form of hardware or software functional modules. It should be noted that the division of modules in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation. The following is an example of dividing each functional module corresponding to each function:
- FIG. 22 is a schematic structural diagram of a communication device provided by an embodiment of this application. As shown in FIG. 22, the communication device includes: a processing unit 101 and a communication unit 102.
- the communication device can execute the following scheme one or two.
- the processing unit 101 is configured to generate a second type of scan frame, where the second type of scan frame includes a radar signal.
- the communication unit 102 is configured to send one or more scan frames of the second type during the beamforming training phase.
- the processing unit 101 is further configured to determine the number of sent scan frames of the second type according to the FSS value.
- the FSS value may be determined according to the beacon frame sent by the second device.
- the processing unit 101 is specifically configured to determine the number of sent scan frames of the second type according to the FSS value and the first correspondence; wherein, the first correspondence is the FSS value and the Correspondence between the number of sent scan frames of the second type.
- the second type scan frame is a second type sector scan SSW frame, or a second type short sector scan short SSW frame.
- the first corresponding relationship may be as shown in Table 2 above.
- the time length of the radar signal in the second type of scanning frame is determined according to the following formula:
- TXTIME radar signal
- TXTIME first type scan frame
- SBIFS the interval between short beam forming frames
- x the first type corresponding to the FSS value
- y represents the number of sent second type scan frames corresponding to the FSS value.
- the processing unit 101 is specifically configured to determine the number of sent scan frames of the second type according to the FSS value and the time length of the radar signal.
- the number of sent scan frames of the second type is determined according to the following formula:
- m represents the number of sent scan frames of the second type.
- the processing unit 101 is specifically configured to determine the number of sent scan frames of the second type according to the FSS value, the length type of the radar signal, and the second correspondence; where the second correspondence is Correspondence between the FSS value, the length type of the radar signal, and the number of sent scan frames of the second type.
- the sector scan slot is determined according to the following formula:
- aSSSlotTime aAirPropagationTime+assduration+radar signal length*N+MBIFS+aSSFBDuration+MBIFS;
- aSSSlotTime represents the time length of the sector scan slot.
- aAirPropagationTime represents the propagation delay between the first device and the second device.
- assduration represents the time required for the first device to transmit the first type of scan frame under the corresponding FSS value
- radar signal length represents the time length of the radar signal in the second type of scan frame
- N represents the number of sent second type scan frames
- aSSFBDuration represents The time required for the second device to perform the SSW feedback process.
- MBIFS represents the medium beamforming interframe interval.
- the communication unit 102 is further configured to receive a beacon frame sent by the second device, where the beacon frame includes radar test information.
- the radar test information includes at least one of the following parameters: radar data feedback type, radar signal length type, and indication information.
- radar data feedback type is used to indicate the radar test data to be fed back.
- the length type of the radar signal is used to determine the time length of the radar signal.
- the indication information is used to indicate one or more first devices that need to perform a radar test.
- the communication unit 102 is further configured to send radar test data to the second device in the first SP, and the first SP is an SP used to feed back the radar test data.
- the communication unit 102 is further configured to send an association request frame to the second device, where the association request frame is used to indicate whether the first device has a radar test capability.
- the communication unit 102 is configured to receive a first indication frame sent by the second device, where the first indication frame is used to indicate the scheduling information of the radar test; send a first response frame to the second device, and the first response frame is used to respond to the first An indication frame; receiving a second indication frame sent by the second device, the second indication frame used to instruct the first device to perform a radar test.
- the processing unit 101 is configured to perform radar testing according to the scheduling information of the radar testing.
- the radar test scheduling information includes at least one of the following parameters: radar SP information, radar data feedback type, and radar transceiver control information.
- the information of the radar SP includes the information of the second SP and the information of the third SP
- the second SP is the SP used for radar testing
- the third SP is the SP used to feed back radar test data.
- the radar data feedback type is used to indicate the radar test data to be fed back.
- the radar transceiver control information is used to indicate the function of each first device in the radar test among the M first devices, and M is a positive integer.
- the communication unit 102 is specifically configured to receive the second indication frame sent by the second device in the second SP.
- the communication unit 102 is specifically configured to perform a radar test according to the radar test scheduling information in the second SP.
- the processing unit 101 is specifically configured to send radar signals in a sector scan mode if the first device is used as the transmitting end of the radar; if the first device is used as the receiving end of the radar, then Receive radar signals in a quasi-omnidirectional manner.
- the communication unit 102 is further configured to send second response information to the second device in the second SP, and the second response information is used to indicate that the first device has completed the radar test.
- the communication unit 102 is further configured to receive third indication information sent by the second device, and the third indication information is used to instruct the first device to feed back the radar test data; and send the radar test data to the second device.
- the communication unit 102 is specifically configured to receive the third indication information sent by the second device in the third SP.
- the communication unit 102 is specifically configured to send radar test data to the second device in the third SP.
- the communication unit 102 is further configured to send an association request frame to the second device, where the association request frame is used to indicate whether the first device has a radar test capability.
- the communication device can execute the following scheme three or four.
- the processing unit 101 is configured to generate a beacon frame, the beacon frame including radar test information.
- the communication unit 102 is configured to send a beacon frame to one or more first devices.
- the radar test information includes at least one of the following parameters: radar data feedback type, radar signal length type, and indication information.
- radar data feedback type is used to indicate the radar test data to be fed back.
- the length type of the radar signal is used to determine the time length of the radar signal.
- the indication information is used to indicate one or more first devices that need to perform a radar test.
- the beacon frame further includes an FSS value, and the FSS value is used to determine the number of sent scan frames of the second type.
- the time length of the radar signal in the second type of scanning frame is determined according to the following formula:
- TXTIME radar signal
- TXTIME first type scan frame
- SBIFS the interval between short beam forming frames
- x the first type corresponding to the FSS value
- y represents the number of sent second type scan frames corresponding to the FSS value.
- the number of sent scan frames of the second type is determined according to the FSS value and the time length of the radar signal.
- the number of sent scan frames of the second type is determined according to the following formula:
- m represents the number of sent scan frames of the second type.
- the sector scan time slot is determined according to the following formula:
- aSSSlotTime aAirPropagationTime+assduration+radar signal length*N+MBIFS+aSSFBDuration+MBIFS;
- aSSSlotTime represents the time length of the sector scan slot.
- aAirPropagationTime represents the propagation delay between the first device and the second device.
- assduration represents the time required for the first device to transmit the first type of scan frame under the corresponding FSS value
- radar signal length represents the time length of the radar signal in the second type of scan frame
- N represents the number of sent second type scan frames
- aSSFBDuration represents The time required for the second device to perform the SSW feedback process.
- MBIFS represents the medium beamforming interframe interval.
- the communication unit 102 is further configured to receive radar test data sent by the first device in a first SP, where the first SP is an SP used to feed back the radar test data.
- the communication unit 102 is further configured to receive an association request frame sent by the first device, and the association request frame is used to indicate whether the first device has a radar test capability.
- the processing unit 101 is further configured to determine whether the first device has radar test capability according to the association request frame.
- the processing unit 101 is configured to generate a first indication frame.
- the communication unit 102 is configured to send a first indication frame to M first devices, where the first indication frame is used to indicate the scheduling information of the radar test, and M is a positive integer; each of the M first devices receives the The first response frame sent by the device, the first response frame is used to respond to the first indication frame; the second indication frame is sent to N first devices, and the second indication frame is used to instruct the first device to perform a radar test.
- the device is a subset of M first devices, and N is a positive integer less than or equal to M.
- the scheduling information of the radar test includes at least one of the following parameters: radar SP information, radar data feedback type, and radar transceiver control information.
- the information of the radar SP includes the information of the second SP and the information of the third SP.
- the second SP is the SP used for radar testing, and the third SP is the SP used to feed back radar test data.
- the radar data feedback type is used to indicate the radar test data to be fed back.
- the radar transceiver control information is used to indicate the function of each of the M first devices in the radar test, and M is a positive integer.
- the communication unit 102 is specifically configured to send a second indication frame to N first devices in the second SP.
- the communication unit 102 is specifically configured to receive the second response information sent by the first device in the second SP, and the second response information is used to indicate that the first device has completed the radar test.
- the communication unit 102 is further configured to send third indication information to the first device, and the third indication information is used to instruct the first device to feed back the radar test data; to receive the radar test data sent by the first device.
- the communication unit 102 is specifically configured to send the third indication information to the first device in the third SP.
- the communication unit 102 is specifically configured to receive the radar test data sent by the first device in the third SP.
- the communication unit 102 is further configured to receive an association request frame sent by the first device, where the association request frame is used to indicate whether the first device has a radar test capability.
- the processing unit 101 is further configured to determine whether the first device has radar test capability according to the association request frame.
- the communication device provided in the above embodiments of the present application can be implemented in a variety of product forms.
- the communication device can be configured as a general processing system; for another example, the communication device can be implemented by a general bus architecture; For another example, the communication device may be implemented by an application specific integrated circuit (ASIC).
- ASIC application specific integrated circuit
- FIG. 23 is a result diagram of possible product forms of the communication device according to the embodiment of the present application.
- the communication device described in the embodiment of the present application may be a communication device, and the communication device includes a processor 201 and a transceiver 202.
- the communication device further includes a storage medium 203.
- the processor 201 is configured to perform step S101 in FIG. 3, and the transceiver 202 is configured to perform step S102 in FIG. 3.
- the transceiver 202 is configured to perform steps S201 and S202 in FIG. 10.
- the transceiver 202 is configured to perform step S301 in FIG. 13.
- the transceiver 202 is configured to perform steps S501, S502, S503, and S401 in FIG. 15.
- the transceiver 202 is configured to execute steps S601, S602, and S603 in FIG. 18, and the processor 201 is configured to execute step S604 in FIG. 18.
- the transceiver is used to perform steps S701 and S702 in FIG. 20.
- the transceiver 202 is used to perform step S201 in FIG. 10.
- the transceiver 202 is configured to execute step S301 in FIG. 13, and the processor 201 is configured to execute step S302 in FIG. 13.
- the transceiver 202 is configured to perform steps S501, S502, S503, and S401 in FIG. 15.
- the transceiver 202 is configured to perform steps S601, S602, and S603 in FIG. 18.
- the transceiver is used to perform steps S701 and S702 in FIG. 20.
- the communication device described in the embodiment of the present application may also be implemented by a general-purpose processor or a special-purpose processor, that is, a chip commonly called.
- the chip includes: a processing circuit 201 and a transceiver pin 202.
- the chip may also include a storage medium 203.
- the processing circuit 201 is used to perform step S101 in FIG. 3, and the transceiver pin 202 is used to perform step S102 in FIG. 3.
- the transceiver pin 202 is used to perform steps S201 and S202 in FIG. 10.
- the transceiver pin 202 is used to perform step S301 in FIG. 13.
- the transceiver pin 202 is used to perform steps S501, S502, S503, and S401 in FIG. 15.
- the transceiver pin 202 is used to execute steps S601, S602, and S603 in FIG. 18, and the processing circuit 201 is used to execute step S604 in FIG. 18.
- the transceiver pins are used to perform steps S701 and S702 in FIG. 20.
- the transceiver pin 202 is used to perform step S201 in FIG. 10.
- the transceiver pin 202 is used to execute step S301 in FIG. 13, and the processing circuit 201 is used to execute step S302 in FIG. 13.
- the transceiver pin 202 is used to perform steps S501, S502, S503, and S401 in FIG. 15.
- the transceiver pin 202 is used to perform steps S601, S602, and S603 in FIG. 18.
- the transceiver pins are used to perform steps S701 and S702 in FIG. 20.
- the communication device described in the embodiments of this application can also be implemented using the following circuits or devices: one or more field programmable gate arrays (FPGA), programmable logic A programmable logic device (PLD), a controller, a state machine, gate logic, discrete hardware components, any other suitable circuits, or any combination of circuits capable of performing the various functions described throughout this application.
- FPGA field programmable gate arrays
- PLD programmable logic A programmable logic device
- controller a state machine
- gate logic discrete hardware components
- any other suitable circuits any combination of circuits capable of performing the various functions described throughout this application.
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Abstract
提供一种雷达测试方法及装置,涉及通信技术领域,用于支持在WLAN中实现雷达测试。该方法包括:第一设备生成第二类型扫描帧,该第二类型扫描帧包括雷达信号(S101);第一设备在波束赋形训练阶段发送一个或多个第二类型扫描帧(S102)。由此,雷达测试可以兼容在波束赋形训练的流程中,无需额外为雷达测试分配相应的时域资源。
Description
本申请要求于2019年05月30日提交国家知识产权局、申请号为201910465180.3、申请名称为“雷达测试方法及装置”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
本申请涉及通信技术领域,尤其涉及雷达测试方法及装置。
雷达(radar)测试是以无线电磁波发现目标,并探测目标的空间位置。在无线局域网(Wireless Local Area Networks,WLAN)中引入雷达测试,是未来一项十分有前景的技术。WIFI雷达可用于检测人的存在、识别人的动作、排除设备故障等。在WLAN中使用雷达测试,可充分利用现存的网络资源,而不需额外部署大量的雷达,从而节省成本。
但是,对于如何在WLAN中实现雷达测试,业界尚未提供相应的解决方案。
发明内容
本申请提供一种雷达测试方法及装置,用于支持在WLAN中实现雷达测试。
第一方面,提供一种雷达测试方法,包括:第一设备生成第二类型扫描帧,所述第二类型扫描帧包括雷达信号;所述第一设备在波束赋形训练阶段发送一个或多个第二类型扫描帧。
基于上述技术方案,第一设备可以在波束赋形训练阶段通过发送第二类型扫描帧来实现雷达测试。本申请的技术方案实现了波束赋形训练与雷达测试在流程上的兼容,使得第一设备可以同时进行波束赋形训练和雷达测试,从而无需额外为雷达测试分配时域资源,有利于节省信令开销和资源开销。本申请的技术方案能够支持在WLAN中实现雷达测试。
一种可能的设计中,第一设备根据FSS值,确定第二类型扫描帧的发送个数。
可选的,FSS值可以根据第二设备发送的信标帧确定。
一种可能的设计中,第一设备根据FSS值,确定第二类型扫描帧的发送个数,包括:所述第一设备根据FSS值以及第一对应关系,确定第二类型扫描帧的发送个数;其中,所述第一对应关系为所述FSS值与所述第二类型扫描帧的发送个数之间的对应关系。
可选的,第二类型扫描帧为第二类型扇区扫描SSW帧,或者第二类型短扇区扫描short SSW帧。所述第一对应关系可以如下表所示:
一种可能的设计中,第二类型扫描帧中雷达信号的时间长度根据以下公式确定:
其中,TXTIME(radar signal)表示雷达信号的时间长度,TXTIME(第一类型扫描帧)为第一类型扫描帧的时间长度,SBIFS表示短波束形成帧间间隔,x表示FSS值对应的第一类型扫描帧的发送个数,y表示FSS值对应的第二类型扫描帧的发送个数。
一种可能的设计中,第一设备根据FSS值,确定第二类型扫描帧的发送个数,包括:所述第一设备根据FSS值和雷达信号的时间长度,确定所述第二类型扫描帧的发送个数。
一种可能的设计中,第二类型扫描帧的发送个数根据以下公式确定:
其中,m表示所述第二类型扫描帧的发送个数。
一种可能的设计中,所述第一设备根据FSS值,确定第二类型扫描帧的发送个数,包括:所述第一设备根据FSS值、雷达信号的长度类型、以及第二对应关系,确定第二类型扫描帧的发送个数;其中,所述第二对应关系为FSS值、雷达信号的长度类型与第二类型扫描帧的发送个数之间的对应关系。
一种可能的设计中,若对于同一FSS值,第二类型扫描帧的发送个数与第一类型扫描帧的发送个数相同,则扇区扫描时隙根据以下公式确定:
aSSSlotTime=aAirPropagationTime+assduration+radar signal length*N+MBIFS+aSSFBDuration+MBIFS;
其中,aSSSlotTime表示扇区扫描时隙的时间长度,aAirPropagationTime表示第一设备和第二设备之间的传播时延,assduration表示第一设备传输对应FSS值下第一类 型扫描帧所需的时间,radar signal length表示第二类型扫描帧中雷达信号的时间长度,N表示第二类型扫描帧的发送个数,aSSFBDuration表示第二设备执行SSW反馈过程所需的时间,MBIFS表示中等波束赋形帧间间隔。
一种可能的设计中,该方法还包括:第一设备接收第二设备发送的信标帧,所述信标帧包括雷达测试信息。基于该设计,由于信标帧包括雷达测试信息,因此第一设备可以根据该雷达测试信息,在波束赋形训练阶段进行相应的雷达测试。
一种可能的设计中,雷达测试信息至少包括以下参数之一:雷达数据反馈类型、雷达信号的长度类型、以及指示信息。其中,所述雷达数据反馈类型用于指示待反馈的雷达测试数据。所述雷达信号的长度类型用于确定雷达信号的时间长度。所述指示信息用于指示一个或多个需要进行雷达测试的第一设备。
一种可能的设计中,该方法还包括:所述第一设备在第一SP内向第二设备发送雷达测试数据,所述第一SP为用于反馈雷达测试数据的SP。基于该设计,使得第二设备能够获取到雷达测试数据。
一种可能的设计中,该方法还包括:第一设备向第二设备发送关联请求帧,所述关联请求帧用于指示所述第一设备是否具有雷达测试能力。基于该设计,第一设备在关联阶段向第二设备发送关联请求帧,该关联请求帧可用于指示第一设备是否具有雷达测试能力。这样一来,第二设备能够根据所述关联请求帧,获知第一设备是否能够进行雷达测试,从而避免第二设备调度不具有雷达测试能力的第一设备进行雷达测试,从而保证雷达测试的流程能够正常执行。
第二方面,提供一种雷达测试方法,包括:第二设备生成信标帧,该信标帧包括雷达测试信息。第二设备向一个或多个第一设备发送信标帧。
基于上述技术方案,由于信标帧包括雷达测试信息,因此第一设备可以根据该雷达测试信息,在波束赋形训练阶段进行相应的雷达测试。
一种可能的设计中,雷达测试信息至少包括以下参数之一:雷达数据反馈类型、雷达信号的长度类型、以及指示信息。其中,所述雷达数据反馈类型用于指示待反馈的雷达测试数据。所述雷达信号的长度类型用于确定雷达信号的时间长度。所述指示信息用于指示一个或多个需要进行雷达测试的第一设备。
一种可能的设计中,信标帧还包括FSS值,FSS值用于确定第二类型扫描帧的发送个数,所述第二类型扫描帧包括雷达信号。
一种可能的设计中,第二类型扫描帧的发送个数与FSS值之间存在对应关系。该对应关系可以参考下文中的表2。
一种可能的设计中,第二类型扫描帧中雷达信号的时间长度根据以下公式确定:
其中,TXTIME(radar signal)表示雷达信号的时间长度,TXTIME(第一类型扫描帧)为第一类型扫描帧的时间长度,SBIFS表示短波束形成帧间间隔,x表示FSS值对应的第一类型扫描帧的发送个数,y表示FSS值对应的第二类型扫描帧的发送个数。
一种可能的设计中,第二类型扫描帧的发送个数根据FSS值和雷达信号的时间长度来确定。
一种可能的设计中,第二类型扫描帧的发送个数根据以下公式确定:
其中,m表示所述第二类型扫描帧的发送个数。
一种可能的设计中,FSS值、雷达信号的长度类型与第二类型扫描帧的发送个数之间存在对应关系。
一种可能的设计中,若对于同一FSS值,第二类型扫描帧的发送个数与第一类型扫描帧的发送个数相同,则扇区扫描时隙根据以下公式确定:
aSSSlotTime=aAirPropagationTime+assduration+radar signal length*N+MBIFS+aSSFBDuration+MBIFS;
其中,aSSSlotTime表示扇区扫描时隙的时间长度,aAirPropagationTime表示第一设备和第二设备之间的传播时延,assduration表示第一设备传输对应FSS值下第一类型扫描帧所需的时间,radar signal length表示第二类型扫描帧中雷达信号的时间长度,N表示第二类型扫描帧的发送个数,aSSFBDuration表示第二设备执行SSW反馈过程所需的时间,MBIFS表示中等波束赋形帧间间隔。
一种可能的设计中,该方法还包括:第二设备在第一SP内接收第一设备发送的雷达测试数据,所述第一SP为用于反馈雷达测试数据的SP。
一种可能的设计中,该方法还包括:第二设备接收第一设备发送的关联请求帧,关联请求帧用于指示所述第一设备是否具有雷达测试能力;第二设备根据关联请求帧,确定第一设备是否具有雷达测试能力。
第三方面,提供一种雷达测试方法,包括:第一设备接收第二设备发送的第一指示帧,所述第一指示帧用于指示雷达测试的调度信息;第一设备向第二设备发送第一响应帧,第一响应帧用于响应第一指示帧;第一设备接收第二设备发送的第二指示帧,第二指示帧用于指示第一设备进行雷达测试;第一设备根据雷达测试的调度信息进行雷达测试。
基于上述技术方案,第二设备发送第一指示帧,以使得多个第一设备获知雷达测试的调度信息。之后,第二设备向第一设备发送第二指示帧,以统一调度多个第一设备根据雷达测试的调度信息进行雷达测试,从而实现多站雷达测试。
一种可能的设计中,雷达测试的调度信息至少包括以下参数之一:雷达SP的信息、雷达数据反馈类型、以及雷达收发控制信息。其中,雷达SP的信息包括第二SP的信息和第三SP的信息,第二SP为用于雷达测试的SP,第三SP为用于反馈雷达测试数据的SP。雷达数据反馈类型用于指示待反馈的雷达测试数据。雷达收发控制信息用于指示M个第一设备中每一个第一设备在雷达测试中的功能,M为正整数。
一种可能的设计中,第一设备接收第二设备发送的第二指示帧,包括:第一设备在第二SP内接收第二设备发送的第二指示帧。
一种可能的设计中,第一设备根据雷达测试的调度信息进行雷达测试,包括:第一设备在第二SP内根据雷达测试的调度信息进行雷达测试。
一种可能的设计中,第一设备根据雷达测试的调度信息进行雷达测试,包括:若所述第一设备作为雷达的发送端,则所述第一设备以扇区扫描的方式发送雷达信号; 若所述第一设备作为雷达的接收端,则所述第一设备以准全向的方式接收雷达信号。
一种可能的设计中,该方法还包括:第一设备在第二SP内向第二设备发送第二响应信息,第二响应信息用于指示第一设备已完成雷达测试。
一种可能的设计中,该方法还包括:第一设备接收第二设备发送的第三指示信息,第三指示信息用于指示第一设备反馈雷达测试数据;第一设备向第二设备发送雷达测试数据。
一种可能的设计中,第一设备接收第二设备发送的第三指示信息,包括:第一设备在第三SP内接收第二设备发送的第三指示信息。
一种可能的设计中,第一设备向第二设备发送雷达测试数据,包括:第一设备在第三SP内向第二设备发送雷达测试数据。
一种可能的设计中,该方法还包括:第一设备向第二设备发送关联请求帧,所述关联请求帧用于指示所述第一设备是否具有雷达测试能力。
第四方面,提供一种雷达测试方法,包括:第二设备向M个第一设备发送第一指示帧,所述第一指示帧用于指示雷达测试的调度信息,M为正整数;第二设备分别接收M个第一设备中每一个第一设备发送的第一响应帧,第一响应帧用于响应第一指示帧;第二设备向N个第一设备发送第二指示帧,第二指示帧用于指示第一设备进行雷达测试,N个第一设备为M个第一设备的子集,N为小于等于M的正整数。
基于上述技术方案,第二设备发送第一指示帧,以使得多个第一设备获知雷达测试的调度信息。之后,第二设备向第一设备发送第二指示帧,以统一调度多个第一设备根据雷达测试的调度信息进行雷达测试,从而实现多站雷达测试。
一种可能的设计中,雷达测试的调度信息至少包括以下参数之一:雷达SP的信息、雷达数据反馈类型、以及雷达收发控制信息。其中,雷达SP的信息包括第二SP的信息和第三SP的信息,第二SP为用于雷达测试的SP,第三SP为用于反馈雷达测试数据的SP。雷达数据反馈类型用于指示待反馈的雷达测试数据。雷达收发控制信息用于指示M个第一设备中每一个第一设备在雷达测试中的功能,M为正整数。
一种可能的设计中,第二设备向N个第一设备发送第二指示帧,包括:第二设备在第二SP内向N个第一设备发送第二指示帧。
一种可能的设计中,该方法还包括:第二设备在第二SP内接收第一设备发送的第二响应信息,第二响应信息用于指示第一设备已完成雷达测试。
一种可能的设计中,该方法还包括:第二设备向第一设备发送第三指示信息,第三指示信息用于指示第一设备反馈雷达测试数据;第二设备接收第一设备发送的雷达测试数据。
一种可能的设计中,第二设备向第一设备发送第三指示信息,包括:第二设备在第三SP内向第一设备发送第三指示信息。
一种可能的设计中,第二设备接收第一设备发送的雷达测试数据,包括:第二设备在第三SP内接收第一设备发送的雷达测试数据。
一种可能的设计中,该方法还包括:第二设备接收第一设备发送的关联请求帧,所述关联请求帧用于指示所述第一设备是否具有雷达测试能力。
第五方面,提供一种通信装置,该通信装置可以是第一设备,也可以是第一设备 中的装置。一种设计中,该装置可以包括用于执行第一方面及其任一种设计,或第三方面及其任一种设计中所描述的方法/操作/步骤/动作所一一对应的模块。上述模块可以是硬件电路,或者是软件,又或者以硬件电路结合软件实现。
第六方面,提供一种通信装置,该通信装置可以是第二设备,也可以是第二设备中的装置。一种设计中,该装置可以包括用于执行第二方面及其任一种设计,或第四方面及其任一种设计中所描述的方法/操作/步骤/动作所一一对应的模块。上述模块可以是硬件电路,或者是软件,又或者以硬件电路结合软件实现。
第七方面,提供一种通信装置,该通信装置包括处理器和收发器,该处理器用于执行上述第一方面至第四方面中任一种设计所涉及的雷达测试方法中的处理操作,例如生成第二类型扫描帧等。该收发器用于接受处理器的控制,执行上述第一方面至第四方面中任一种设计所设计的雷达测试方法中的收发操作,例如发送第二类型扫描帧等。
第八方面,提供一种计算机可读存储介质,该计算机可读存储介质用于存储指令,当该指令被计算机读取时,计算机用于执行上述第一方面至第四方面中任一种设计所涉及的雷达测试方法。
第九方面,提供一种计算机程序产品,该计算机程序产品包括指令。当计算机读取该指令时,计算机执行上述第一方面至第四方面中任一种可能设计所涉及的雷达测试方法。
第十方面,提供一种芯片,该芯片包括处理电路和收发管脚。可选地,该芯片还包括存储器。其中,处理电路用于执行第一方面至第四方面中任一种可能设计所涉及的雷达测试方法中的处理操作,例如生成第二类型扫描帧等。收发管脚用于接受处理电路的控制,执行第一方面至第四方面中任一种可能设计所涉及的雷达测试方法中的收发操作,例如发送第二类型扫描帧等。存储器用于存储指令,所述指令被处理器调用,以执行第一方面至第四方面中任一种可能设计所涉及的雷达测试方法中的处理操作。
第十一方面,提供一种通信系统,包括:第一设备和第二设备。其中,第一设备用于执行上述第一方面或第三方面中任一种设计所涉及的雷达测试方法;第二设备用于执行上述第二方面或第四方面中任一种设计所涉及的雷达测试方法。
其中,第五方面至第十一方面中任一种设计所带来的技术效果可参考上文所提供的对应的方法中的有益效果,此处不再赘述。
图1为本申请实施例提供的一种信标间隔的结构示意图;
图2为本申请实施例提供的一种波束赋形训练的流程示意图;
图3为本申请实施例提供的一种雷达测试方法的流程图;
图4为本申请实施例提供的一种雷达信号在第二类型扫描帧的头部的示意图;
图5为本申请实施例提供的一种雷达信号在第二类型扫描帧的中部的示意图;
图6为本申请实施例提供的一种雷达信号在第二类型扫描帧的尾部的示意图;
图7为本申请实施例提供的一种第一设备发送第一类型扫描帧的场景示意图;
图8为本申请实施例提供的一种单站雷达测试的场景示意图;
图9为本申请实施例提供的一种多站雷达测试的场景示意图;
图10为本申请实施例提供的一种雷达测试方法的流程图;
图11为本申请实施例提供的一种信标帧的帧结构的示意图;
图12为本申请实施例提供的另一种信标帧的帧结构的示意图;
图13为本申请实施例提供的一种能力上报方法的流程图;
图14为本申请实施例提供的一种EMDG capabilities element的结构示意图;
图15为本申请实施例提供的一种雷达测试数据的反馈方法;
图16为本申请实施例提供的一种SPR帧的帧结构的示意图;
图17为本申请实施例提供的一种雷达测试的时序图;
图18为本申请实施例提供的一种雷达测试方法的流程图;
图19为本申请实施例提供的一种第一指示帧的帧结构的示意图;
图20为本申请实施例提供的一种雷达测试数据的反馈方法的流程图;
图21为本申请实施例提供的一种雷达测试的时序图;
图22为本申请实施例提供的一种通信装置的结构示意图;
图23为本申请实施例提供的一种通信装置的结构示意图。
在本申请的描述中,除非另有说明,“/”表示“或”的意思,例如,A/B可以表示A或B。本文中的“和/或”仅仅是一种描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。此外,“至少一个”是指一个或多个,“多个”是指两个或两个以上。“第一”、“第二”等字样并不对数量和执行次序进行限定,并且“第一”、“第二”等字样也并不限定一定不同。
需要说明的是,本申请中,“示例性的”或者“例如”等词用于表示作例子、例证或说明。本申请中被描述为“示例性的”或者“例如”的任何实施例或设计方案不应被解释为比其他实施例或设计方案更优选或更具优势。确切而言,使用“示例性的”或者“例如”等词旨在以具体方式呈现相关概念。
在本申请的描述中,“指示”可以包括直接指示和间接指示,也可以包括显式指示和隐式指示。将某一信息(如下文所述的指示信息)所指示的信息称为待指示信息,则具体实现过程中,对所述待指示信息进行指示的方式有很多种。例如,可以直接指示所述待指示信息,其中所述待指示信息本身或者所述待指示信息的索引等。又例如,也可以通过指示其他信息来间接指示所述待指示信息,其中该其他信息与所述待指示信息之间存在关联关系。又例如,还可以仅仅指示所述待指示信息的一部分,而所述待指示信息的其他部分则是已知的或者提前约定的。另外,还可以借助预先约定(例如协议规定)的各个信息的排列顺序来实现对特定信息的指示,从而在一定程度上降低指示开销。
为了便于理解,下面先对本申请实施例所涉及的技术术语进行简单介绍。
1、雷达
雷达按照发射端和接收端是否共址,可以分为单站雷达、双基地雷达和多基地雷达。单站雷达发射端和接收端共址。双基地雷达和多基地雷达的接收端和发射端在物理上分离。
2、信标间隔(beacon interval,BI)
在802.11ad/ay标准中,时间轴被划分为多个BI。如图1所示,BI包括信标头指示(beacon header indication,BHI)和数据传输间隔(data transmission interval,DTI)。
BHI包括:信标传输间隔(beacon transmission interval,BTI)、关联-波束赋形训练(association beamforming training,A-BFT)、以及公告传输间隔(announcement transmission interval,ATI)。
DTI可以被划分为若干个子区间。其中,子区间存在以下两种类型:基于竞争接入区间(contention based access period,CBAP)和服务区间(service period,SP)。例如,DTI可以包括CBAP1、CBAP2、SP1、SP2等。
需要说明的是,在BTI内,PCP/AP会按照扇区编号发送多个信标(beacon)帧,以进行下行扇区扫描。
在A-BFT内,站点(station,STA)可以与个人基本服务集控制节点(personal basic service set control point,PCP)或者接入点(access point,AP)进行关联,并且STA可以进行上行扇区扫描。
在ATI内,PCP/AP可以向多个STA轮询缓存数据信息以及向STA分配DTI中的资源。
以上是对BI的简单介绍,BI的具体信息可以参考标准中的描述。
3、波束
发送波束可以是指信号经天线发射出去后在空间不同方向上形成的信号强度的分布,接收波束可以是指从天线上接收到的无线信号在空间不同方向上的信号强度分布。
波束可以是宽波束,或者窄波束,或者其他类型波束。形成波束的技术可以是波束赋形技术或者其他技术。波束赋形技术具体可以为数字波束赋形技术、模拟波束赋形技术或者混合数字/模拟波束赋形技术等。
4、波束赋形训练
波束赋形又叫波束成型、空域滤波,是一种使用传感器阵列定向发送和接收信号的信号处理技术。
波束赋形训练用于在发送端和接收端之间形成对齐的发射波束和接收波束,以便于发送端和接收端之间能够正常通信。如图2所示,波束赋形训练主要包括两个部分:扇区级扫描(Sector-Level Sweep,SLS)、以及波束精炼(Beam Refinement Protocol,BRP)
(1)、SLS包括以下阶段:
发起方扇区扫描(ISS)阶段,用来训练发起方的定向发送波束。发起方以一定宽度的波束定向发送训练数据,应答方以准全向的方式接收训练数据。
应答方扇区扫描(RSS)阶段,用来训练应答方的定向发送波束。应答方以一定宽度的波束定向发送训练数据,并且包含了发起方上一阶段的最佳发送扇区信息,此时发起方以准全向的方式接收训练数据。
扇区级扫描反馈(SSW Feedback)阶段,发起方向应答方发送反馈信息,反馈信息是按照扇区质量进行排序的发起方发送扇区列表,并且包含上一阶段应答方的最佳扇区。另外,应答方此时处于准全向接收模式。
扇区扫描确认(SSW ACK),用于应答方向发起方反馈按照质量排序的应答方发送扇区列表。SSW ACK是可选的,在DTI之前执行SLS可以不存在SSW ACK阶段,在DTI阶段执行SLS则需要有SSW ACK阶段。
(2)BRP包括以下阶段:
初始化设置(BRP setup)阶段,用于配置后续多扇区探测(multiple sector ID Detection,MID)和波束配对(Beam Combining,BC)阶段的训练信息。
MID阶段,用于训练发起方与应答方的最佳接收波束,方法与最佳发送波束的训练过程类似,只不过采用准全向模式发送训练数据,而采用定向模式接收训练数据。
BC阶段,用于将SLS与MID阶段分别训练得到的收发波束进行配对以获得最佳的收发波束配对从而找到最佳的定向通信链路。此时发送与接收训练数据都采用定向模式。
至少一轮的波束细化(Beam Refinement Transaction,BRT)阶段,用于进行进一步的波束细化,从而迭代找到更加精细化的波束对,提升通信链路质量。
5、雷达测试数据
在本申请实施例中,雷达测试数据可以包括以下参数中的至少一项:
(1)信道状态信息(channel state information,CSI)。CSI用于反映信道的状态。可选的,CSI可以包括以下参数中的至少一项:预编码矩阵指示(precoding matrix indicator,PMI)、秩指示(rank indication,RI)、信道质量指示(channel quality indicator,CQI)、信道状态信息参考信号资源指示(CSI-RS resource indicator,CRI)、以及层指示(layer indicator,LI)。
(2)时域信号的采样数据,包括:未进行快速傅里叶编号的时域信号的每一个采样点及对应的采样值。
(3)FFT图谱。FFT图谱由采样后的数字信号进行FFT变换得到。FFT图谱可以为rang-FFT图谱、doppler-FFT图谱、或者angle-FFT图谱。
(4)雷达测试结果,包括:距离、速度、以及角度。其中,距离为被测物体与雷达之间的距离。速度为被测物体的速度。角度为被测物体与雷达之间的角度。
需要说明的是,距离可以根据range-FFT图谱中峰值对应的横坐标的取值来确定。速度可以根据doppler-FFT图谱中峰值对应的横坐标的取值。角度可以根据angle-FFT图谱中峰值对应的横坐标的取值来确定。
6、FSS值
FSS值用于确定扇区扫描时隙中short SSW/SSW帧的发送个数。如表1所示,当前标准中定义了FSS值与short SSW/SSW帧的发送个数之间的对应关系。
表1
以上是对本申请实施例所涉及的术语的介绍,以下不再赘述。
本申请的技术方案应用于WLAN,WLAN采用的标准可以为IEEE的802.11标准,例如802.11ad标准、802.11ay标准、以及下一代的802.11标准等。
本申请的技术方案还可以应用于蜂窝通信系统,例如第四代(4th generation,4G)通信系统、第五代(5th generation,5G)通信系统。
本申请的技术方案适用的场景包括:第一设备与第二设备之间的通信场景、第一设备与第一设备之间的通信场景、第二设备与第二设备之间的通信场景。其中,第一设备可以是STA。STA可以有不同的名称,例如用户单元、接入终端、移动站、移动台、移动设备、终端、用户设备等。在实际应用中,STA可以是蜂窝电话、智能手机、无线本地环路(wireless local loop,WLL),以及其它具有无线局域网通信功能的手持设备、计算机设备等。第二设备可以是基站、PCP或者AP。AP可以是无线路由器、无线收发机、无线交换机等。
本申请的技术方案主要从第一设备与第二设备之间的通信场景下进行介绍,其他场景下的技术方案可以参考第一设备与第二设备之间的通信场景来实现。
下面结合本申请的说明书附图,对本申请实施例所提供的技术方案进行具体介绍。
如图3所示,为本申请实施例提供的一种雷达测试方法,包括:
S101、第一设备生成第二类型扫描帧,所述第二类型扫描帧包括雷达信号。
其中,第二类型扫描帧可以为第二类型short SSW帧或者第二类型SSW帧。
为了便于描述,本申请实施例将现有技术中的short SSW帧/SSW帧称为第一类型扫描帧。可以理解的是,第二类型扫描帧相当于第一类型扫描帧以及雷达信号的组合。相比较于第一类型扫描帧,第二类型扫描帧可以用于雷达测试。
可选的,第二类型扫描帧所携带的雷达信号可以利用当前short SSW/SSW帧中已有的信息来实现。
或者,第二类型扫描帧所携带的雷达信号可以承载于一个新的独立字段(或者称为比特域)中。本申请实施例不限制用于承载雷达信号的字段在第二类型扫描帧中的位置,例如,该承载雷达信号的字段可以位于第二类型扫描帧的帧头、帧中间、或者 帧尾。
示例性的,如图4所示,为本申请实施例提供的一种雷达信号在第二类型扫描帧的头部的示意图。如图5所示,为本申请实施例提供的一种雷达信号在第二类型扫描帧的中部的示意图。如图6所示,为本申请实施例提供的一种雷达信号在第二类型扫描帧的尾部的示意图。
在本申请实施例中,雷达信号可以是用于雷达测试的序列或者数据,本申请实施例不限于此。
S102、第一设备在波束赋形训练阶段发送一个或多个第二类型扫描帧。
其中,波束赋形训练阶段可以为A-BFT。需要说明的是,由于A-BFT包括多个扇区扫描时隙(an SSW slot,aSSSlotTime),因此步骤S102也可以具体实现为:第一设备在扇区扫描时隙发送一个或多个第二类型扫描帧。
需要说明的是,在发送第二类型扫描帧之前,第一设备需要确定第二类型扫描帧在一个扇区扫描时隙中的发送个数。这样一来,第一设备可以在扇区扫描时隙发送相应个数的第二类型扫描帧,以实现波束赋形训练。
为了便于描述,下文中将第二类型扫描帧在一个扇区扫描时隙中的发送个数简称为第二类型扫描帧的发送个数,在此统一说明,以下不再赘述。
在本申请实施例中,第一设备可以根据FSS值,确定第二类型扫描帧的发送个数。
其中,FSS值可以是第二设备指示的,例如,第二设备向第一设备发送信标帧,该信标帧包括FSS值。
可选的,第一设备根据FSS值,确定第二类型帧的发送个数,包括以下实现方式:
实现方式一、第一设备根据FSS值和第一对应关系,确定第二类型扫描帧的发送个数。
其中,第一对应关系为FSS值与第二类型扫描帧的发送个数之间的对应关系。需要说明的是,第一对应关系可以是预先配置的,也可以是标准中定义的,本申请实施例对此不作限定。
示例性的,第一对应关系可以如下表2所示。其中,a、b、c、d、e、f、g、h、i、j、k、l、n、m、o、p、A、B、C、D、E、F、G、H、I、J、K、L、N、M、O、以及P均为大于等于0的整数。
表2
或者,第一对应关系可以如表3中的一部分列所示。表3不仅示出了FSS值与第二类型扫描帧的发送个数之间的对应关系,还示出了FSS值与第一类型扫描帧的发送个数之间的对应关系。
表3
基于实现方式一,第二类型扫描帧中雷达信号的时间长度可以是预先配置的,也可以是第一设备根据以下公式(1)确定的。
第一设备可以根据以下公式(1),确定第二类型扫描帧中雷达信号的时间长度。
其中,TXTIME(radar signal)表示雷达信号的时间长度,TXTIME(第一类型扫描帧)为第一类型扫描帧的时间长度,SBIFS表示短波束形成帧间间隔,x表示FFS值对应的第一类型扫描帧的发送个数,y表示FSS值对应的第二类型扫描帧的发送个数。
实现方式二、第一设备根据FSS值、雷达信号的长度类型以及第二对应关系,确定第二类型扫描帧的发送个数。
其中,第二对应关系为FSS值、雷达信号的长度类型、以及第二类型扫描帧的发送个数之间的对应关系。需要说明的是,第二对应关系可以是预先配置的,也可以是标准中定义的,本申请实施例不限于此。
可以理解的是,第二对应关系也可以表述为:雷达信号的长度类型与第一对应关系之间的对应关系。也即,对于第一设备来说,每一种雷达信号的长度类型存在与其匹配的第一对应关系。在这种情况下,第一设备根据FSS值、雷达信号的长度类型以及第二对应关系,确定第二类型扫描帧的发送个数,可以具体实现为:第一设备根据雷达信号的长度类型,确定与该雷达信号的长度类型匹配的第一对应关系;之后,第一设备根据FSS值,和与该雷达信号的长度类型匹配的第一对应关系,确定第二类型扫描帧的发送个数。
可选的,雷达信号的长度类型用于直接指示雷达信号的时间长度。每一种雷达信号的长度类型直接指示一个雷达信号的时间长度。例如,雷达信号的长度类型包括第一长度类型、第二长度类型、以及第三长度类型。第一长度类型所指示的雷达信号的时间长度为4us,第二长度类型所指示的雷达信号的时间长度为8us,第三长度类型所指示的雷达信号的时间长度为12us。
示例性的,若第一长度类型所指示的雷达信号的时间长度为4us,与第一长度类型匹配的第一对应关系可以如下表4所示。
表4
示例性的,若第二长度类型所指示的雷达信号的时间长度为8us,与第二长度类型匹配的第一对应关系可以如下表5所示。
表5
示例性的,若第三长度类型所指示的雷达信号的时间长度为12us,与第三长度类型匹配的第一对应关系可以如下表6所示。
表6
可选的,在上述表4、表5、以及表6中,FSS值为0的情况下,第二类型扫描帧的发送个数也可以为1。
或者,雷达信号的长度类型用于指示间接指示雷达信号的时间长度。或者说,雷达信号的长度类型用于表征雷达信号的时间长度的取值范围。
例如,雷达信号的长度类型包括第一长度类型、第二长度类型、以及第三长度类型。第一长度类型对应第一取值范围,第二长度类型对应第二取值范围,第三长度类型对应第三取值范围。第一取值范围小于第二取值范围,第二取值范围小于第三取值范围。例如,对于第二类型short SSW帧来说,第一取值范围可以是0-4.9us,第二取值范围可以是0-19.6us,第三取值范围可以是0-29.4us。以上仅是示例,本申请实施例不限于此。
示例性的,对于第一长度类型,表7示出对应的第一对应关系,以及每一个FSS值对应的雷达信号的时间长度。
表7
示例性的,对于第二长度类型,表8示出对应的第一对应关系,以及每一个FSS值对应的雷达信号的时间长度。
表8
示例性的,对于第三长度类型,表9示出对应的第一对应关系,以及每一个FSS值对应的雷达信号的时间长度。
表9
实现方式三、第一设备根据雷达信号的时间长度和FSS值,确定第二类型扫描帧的发送个数。
其中,雷达信号的时间长度可以是预先配置的,例如第二设备向第一设备发送信标帧,该信标帧包括雷达信号的时间长度。又或者,雷达信号的时间长度是标准中定义的。又或者,雷达信号的时间长度是第一设备根据实际应用场景确定的。
可选的,基于实现方式三,第二类型扫描帧的发送个数可以根据以下公式(2)确定:
实现方式四、第一设备根据雷达信号的时间长度的最大值和FSS值,确定第二类型扫描帧的发送个数。
其中,雷达信号的时间长度的最大值可以是预先配置的,例如第二设备向第一设备发送信标帧,该信标帧包括雷达信号的时间长度的最大值。又或者,雷达信号的时间长度的最大值是标准中定义的。又或者,雷达信号的时间长度的最大值是第一设备根据实际应用场景确定的。
可选的,基于实现方式四,第二类型扫描帧的发送个数可以根据以下公式(3)确定:
其中,TXTIME(radar signal max)表示第二类型扫描帧中雷达信号的时间长度的最 大值。
实现方式五、第一设备根据雷达信号的时间长度的最小值和FSS值,确定第二类型扫描帧的发送个数。
其中,TXTIME(radar signal min)表示第二类型扫描帧中雷达信号的时间长度的最小值。
对于实现方式一、实现方式三、实现方式四、以及实现方式五来说,当第一设备发送第二类型short SSW帧时,上述公式(1)、(2)、(3)、(4)中的参数TXTIME(第一类型扫描帧)可以替换为TXTIME(shortSSW)。其中,TXTIME(shortSSW)表示第一类型short SSW帧的时间长度。当第一设备发送第二类型SSW帧时,上述公式(1)、(2)、(3)、(4)中的参数TXTIME(第一类型扫描帧)可以替换为TXTIME(SSW)。其中,TXTIME(SSW)表示第一类型SSW帧的时间长度。
另外,需要说明的是,对于上述实现方式一至实现方式五来说,扇区扫描时隙可以根据现有技术中的公式计算。
实现方式六、第一设备根据FSS值、以及FSS值与第一类型扫描帧的发送个数之间的关系,确定第一类型扫描帧的发送个数,进而确定第二类型扫描帧的发送个数。也即是说,对于同一FSS值,第一类型扫描帧的发送个数与第二类型扫描帧的发送个数是相同的。
在采用实现方式六的情况下,相比较于现有技术,扇区扫描时隙的计算公式需要更新。
可选的,基于实现方式六,扇区扫描时隙可以根据以下公式(5)确定:
其中,aSSSlotTime表示扇区扫描时隙的时间长度。aAirPropagationTime表示第一设备和第二设备之间的传播时延。assduration表示第一设备传输对应FSS值下第一类型扫描帧所需的时间,radar signal length表示第二类型扫描帧中雷达信号的时间长度,N表示第二类型扫描帧的发送个数,aSSFBDuration表示第二设备执行SSW反馈过程所需的时间,MBIFS表示中等波束赋形帧间间隔。
需要说明的是,相比较于现有技术所确定的扇区扫描时隙的时间长度,基于公式(5)所确定的扇区扫描时隙的时间长度较大。也即,本申请实施例通过扩大扇区扫描时隙的长度,以使得进行雷达测试的第一设备所发送的第二类型扫描帧的个数可以与不进行雷达测试的第一设备所发送的第一类型扫描帧的个数相同,从而保证执行雷达测试的第一设备能够实现较为准确的波束赋形训练。
另外,基于实现方式六,如图7所示,不进行雷达测试的第一设备在扇区扫描时隙中,第一设备需要在发送第一类型扫描帧之后,额外发送与雷达信号的时间长度相同的空数据包(empty packet),以保证不进行雷达测试的第一设备的扇区扫描时隙, 与进行雷达测试的第一设备的扇区扫描时隙在时间长度上是相同的。
基于图3所示的技术方案,第一设备可以在波束赋形训练阶段通过发送第二类型扫描帧来实现雷达测试。本申请的技术方案实现了波束赋形训练与雷达测试在流程上的兼容,使得第一设备可以同时进行波束赋形训练和雷达测试,从而无需额外为雷达测试分配时域资源,有利于节省信令开销和资源开销。本申请的技术方案能够支持在WLAN中实现雷达测试。
需要说明的是,图3所示的技术方案可以实现单站雷达测试。也即,第一设备在发送第二类型扫描帧之后,第一设备还需接收雷达信号的反射波,以完成雷达测试。如图8所示,STA1发送第二类型扫描帧,并且STA1接收雷达信号的反射波。
图3所示的技术方案还可以实现多站雷达测试。也即,一个第一设备发送第二类型扫描帧,其他第一设备接收雷达信号的反射波。如图9所示,STA1发送第二类型扫描帧,STA2和STA3接收雷达信号的反射波。
如图10所示,为本申请实施例提供的一种雷达测试方法,该方法包括以下步骤:
S201、第二设备向一个或多个第一设备发送信标帧,以使得一个或多个第一设备接收第二设备发送的信标帧。
其中,所述信标帧包括雷达测试信息。所述雷达测试信息至少包括以下参数之一:雷达数据反馈类型、雷达信号的长度类型、以及指示信息。
(1)雷达数据反馈类型用于指示待反馈的雷达测试数据。或者说,雷达数据反馈类型用于指示第一设备反馈雷达测试数据所包括的内容。例如,雷达数据反馈类型可以仅指示第一设备反馈时域信号的采样数据。或者,雷达数据反馈类型可以指示第一设备反馈时域信号的采样数据、以及FFT图谱。
(2)雷达信号的长度类型用于确定雷达信号的时间长度。可选的,雷达信号的长度类型用于直接指示雷达信号的时间长度。或者,雷达信号的长度类型用于表征雷达信号的取值范围。标准中可以预先定义多种雷达信号的长度类型,例如第一长度类型、第二长度类型、以及第三长度类型,本申请实施例不限于此。
(3)指示信息用于指示一个或多个目标第一设备,所述目标第一设备为需要进行雷达测试的第一设备。
作为一种实现方式,指示信息包括一个或多个目标第一设备的信息,目标第一设备的信息可以为关联标识(association identifier,AID)。
作为另一种实现方式,指示信息可以包括:位图偏移值(bitmap offset)和部分虚拟位图(partial virtual bitmap)。
其中,位图偏移值用于确定部分虚拟位图中第一个比特所对应的AID。例如,位图偏移值为300,则部分虚拟位图中的第一个比特所对应的AID为300。
部分虚拟位图中的每一个比特对应一个AID,不同比特对应不同的AID。可选的,在部分虚拟位图中,若两个比特是相邻的,则这两个比特所对应的两个AID也是相邻的。例如,部分虚拟位图中的第一个比特所对应的AID为300,第二个比特所对应的AID为301,第三个比特所对应的AID为302,以此类推,不再赘述。
在部分虚拟位图中,每一个比特的取值,用于指示具有该比特对应的AID的第一设备是否需要进行雷达测试。例如,在部分虚拟位图中,若一个比特的取值为“0”, 则具有该比特对应的AID的第一设备不需要进行雷达测试;若一个比特的取值为“1”,则具有该比特对应的AID的第一设备需要进行雷达测试。
当然,指示信息也可以采用其他实现方式,本申请实施例不限于此。
在本申请实施例中,所述信标帧用于指示第一设备在波束赋形训练阶段进行雷达测试。或者说,所述信标帧用于指示第一设备在波束赋形训练阶段发送第二类型扫描帧。
可选的,所述信标帧具体包括以下两种情形:
情形一、所述信标帧用于指示具有雷达测试能力的第一设备在波束赋形训练阶段进行雷达测试。
这样一来,无论第一设备是否与第二设备具有关联关系,当第一设备具有雷达测试能力时,第一设备在接收到该信标帧之后,该第一设备在波束赋形训练阶段进行雷达测试。
可选的,基于情形一,如图11所示,为本申请实施例所提供的一种信标帧的帧结构的示意图。其中,信标帧至少包括以下比特域:帧控制、持续时间、基础服务集标识(Basic Service Set ID,BSSID)、雷达单元(radar element)、以及FCS。
其中,雷达单元比特域至少包括以下比特域:雷达参数(radar parameter)、雷达信号长度类型(radar signal length type)。
在本申请实施例中,雷达参数比特域用于承载雷达数据反馈类型。雷达信号长度类型比特域用于指示雷达信号的长度类型。
可选的,雷达参数比特域至少包括以下比特域:CSI、before FFT、FFT info、FFT result以及保留(reserved)。
CSI比特域用于指示第一设备是否反馈CSI。可选的,CSI比特域可以以1个比特来实现。CSI比特域的取值为“0”,表示第一设备不需要反馈CSI;CSI比特域的取值为“1”,表示第一设备需要反馈CSI。
before FFT比特域用于指示第一设备是否反馈时域信号的采样数据。可选的,before FFT比特域可以以1个比特来实现。before FFT比特域的取值为“0”,表示第一设备不需要反馈时域信号的采样数据;before FFT比特域的取值为“1”,表示第一设备需要反馈时域信号的采样数据。
FFT info比特域用于指示第一设备是否反馈FFT图谱。可选的,FFT info比特域可以以1个比特来实现。FFT info比特域的取值为“0”,表示第一设备不需要反馈FFT图谱;FFT info比特域的取值为“1”,表示第一设备需要反馈FFT图谱。
FFT result比特域用于指示第一设备是否反馈雷达测试结果。可选的,FFT result比特域可以以1个比特来实现。FFT result比特域的取值为“0”,表示第一设备不需要反馈雷达测试结果;FFT result比特域的取值为“1”,表示第一设备需要反馈雷达测试结果。
在本申请实施例中,CSI比特域还可以称为第一指示比特域,before FFT比特域还可以称为第二指示比特域,FFT info比特域还可以称为第三指示比特域,FFT result比特域还可以称为第四指示比特域,本申请实施例不限于此。
情形二、所述信标帧用于指示一个或多个与第二设备具有关联关系的第一设备在 波束赋形训练阶段进行雷达测试。
可以理解的是,第二设备可以从多个与第二设备具有关联关系的第一设备中,选择具有雷达测试能力的第一设备在波束赋形训练阶段进行雷达测试。需要说明的是,第一设备可以在之前的BI中根据下文中图13所示的能力上报方法,建立与第二设备的关联关系,并使得第二设备获知第一设备是否具有雷达测试能力。
可选的,基于情形二,如图12所示,为本申请实施例提供的一种信标帧的帧结构示意图。相比较于图11所示的信标帧,图12所示的信标帧的雷达单元比特域还包括以下比特域:位图偏移值、以及部分虚拟位图。
可以理解的是,在情形一下,信标帧可以不包括指示信息。在情形二下,信标帧必须包括指示信息。
S202、目标第一设备在波束赋形训练阶段发送一个或多个第二类型扫描帧。
对于情形一下的信标帧,目标第一设备即为具有雷达测试能力的第一设备。对于情形二下的信标帧,目标第一设备根据信标帧所携带的指示信息来确定。
其中,步骤S202的具体描述可参考图3所示的实施例,在此不再赘述。
可以理解的是,不进行雷达测试的第一设备按照传统的方式进行波束赋形训练。也即,不进行雷达测试的第一设备在波束赋形训练阶段发送一个或多个第一类型扫描帧。
基于图10所示的技术方案,第二设备发送信标帧,以触发第一设备在波束赋形训练阶段进行雷达测试,从而支持WLAN中实现雷达测试。
如图13所示,为本申请实施例提供的一种能力上报方法,该方法包括以下步骤:
S301、第一设备向第二设备发送关联请求(Association Request)帧,以使得第二设备接收第一设备发送的关联请求帧。
其中,所述关联请求帧用于建立第一设备与第二设备之间的关联关系。
此外,所述关联请求帧还用于指示所述第一设备是否具有雷达测试能力。可以理解的是,具有雷达测试能力的第一设备能够进行雷达测试;不具有雷达测试能力的第一设备不能够进行雷达测试。
作为一种实现方式,具有雷达测试能力的第一设备所发送的关联请求帧包含雷达测试能力信息。不具有雷达测试能力的第一设备所发送的关联请求帧不包含雷达测试能力信息。
可选的,雷达测试能力信息用于指示第一设备具有雷达测试能力。进一步的,雷达测试能力信息还可以用于指示第一设备对于雷达测试的相关信息,例如:第一设备所支持的雷达类型。其中,雷达类型包括:单站雷达、双站雷达、多站雷达。
在本申请实施例中,雷达测试能力信息可以承载于所述关联请求帧中的一个独立的字段中。例如,关联请求帧中的定向多吉比特(directional multi gigabit,DMG)/增强型定向多吉比特(enhanced directional multi gigabit,EDMG)能力单元(capabilities element)中以雷达能力(radar capability)字段来承载雷达测试能力信息。示例性的,图14示出本申请实施例中的一种EMDG capabilities element的结构示意图。
这样一来,若关联请求帧包括雷达能力字段,则说明关联请求帧包含雷达测试能力信息;若关联请求帧不包括雷达能力字段,则说明关联请求帧不包括雷达测试能力 信息。
S302、第二设备根据所述关联请求帧,确定第一设备是否具有雷达测试能力。
作为一种实现方式,若关联请求帧包含雷达测试能力信息,则所述第二设备能够确定所述第一设备具有雷达测试能力;若所述关联请求帧不包含雷达测试能力信息,则所述第二设备能够确定所述第一设备不具有雷达测试能力。
基于图13所示的技术方案,第一设备在关联阶段向第二设备发送关联请求帧,该关联请求帧可用于指示第一设备是否具有雷达测试能力。这样一来,第二设备能够根据所述关联请求帧,获知第一设备是否能够进行雷达测试,从而避免第二设备调度不具有雷达测试能力的第一设备进行雷达测试,从而保证雷达测试的流程能够正常执行。
另外,图13所示的技术方案,能够将雷达能力的上报流程兼容到现有的关联流程中,从而第一设备无需执行额外的步骤。
在基于图3或图10所示的方法进行雷达测试之后,如图15所示,为本申请实施例提供的一种雷达测试数据的反馈方法,该方法包括以下步骤:
S401、第一设备在第一SP内向第二设备发送雷达测试数据,以使得第二设备在第一SP内接收第一设备发送的雷达测试数据。
其中,第一SP是用于反馈雷达测试数据的SP。
可选的,第一SP的确定流程可以参考步骤S501-S503。
S501、第二设备在ATI阶段向第一设备发送轮询(poll)帧,以使得第一设备在ATI阶段接收第二设备发送的轮询帧。其中,所述轮询帧用于触发第一设备发送SPR帧。
S502、第一设备在ATI阶段向第二设备发送服务区间请求(service period request,SPR)帧,以使得第二设备在ATI阶段接收第一设备发送的SPR帧。
其中,SPR帧用于请求第二设备为第一设备分配第一SP。或者说,SPR帧用于请求反馈雷达测试数据。
可选的,如图16所示,为SPR帧的帧结构的示意图。SPR帧包括以下比特域:帧控制(frame control)、持续时间(duration)、接收地址(receiving address,RA)、发送地址(transmitting address,TA)、动态分配信息(dynamic allocation info)、波束赋形控制(BF control)、以及帧校验序列(frame check sequence,FCS)。
其中,动态分配信息比特域至少包括以下比特域:流量识别符(traffic identifier,TID)、分配类型(allocation type)、源(source)AID、目标(destination)AID、分配持续时间(allocation duration)、以及保留(reserved)。
相比于现有技术中的SPR帧,本申请实施例所提供的SPR帧在分配类型比特域新规划了一种组合(或者称为取值),以表示该SPR帧用于请求第二设备为第一设备分配用于反馈雷达测试数据的SP。
需要说明的是,分配类型比特域由3个比特组成,第一个比特可以记为Bit4,第二个比特可以记为Bit5,第三个比特可以记为Bit6。
示例性的,对于本申请实施例所提供的SPR帧来说,分配类型比特域中各个比特的取值以及对应的含义可以参考表10。
表10
在表10中,当分配类型比特域的取值为“001”时,该SPR帧用于请求第二设备为第一设备分配用于反馈雷达测试数据的SP。
可以理解的是,SPR帧的分配类型比特域也可以采用其他预设值(例如“111”),以表示含义“Radar-SP for radar data feedback”。
S503、第二设备在ATI阶段向第一设备发送宣告(announce)帧,以使得第一设备在ATI阶段接收第一设备发送的宣告帧。
其中,该宣告帧包括第一SP的信息。
基于图15所示的技术方案,第一设备在预先确定的第一SP向第二设备发送雷达测试数据,以使得第二设备能够获取到雷达测试数据。
下面结合图17以举例的方式来具体说明图10、图13和图15所示的技术方案。
如图17所示,在BTI阶段,AP向STA1发送信标帧,以指示STA1在波束赋形训练阶段进行雷达测试。
在A-BFT阶段,STA1以扇区扫描的形式发送第二类型扫描帧。之后,AP会执行SSW feedback。STA1执行SSW ACK。
在ATI阶段,若STA1与AP之间不具有关联关系,则STA1与AP之间相互发送关联请求帧,以建立STA1与AP之间的关联请求帧。同时,STA1所发送的关联请求帧可以包括雷达测试能力信息,以使得AP获知STA1具有雷达测试能力。若STA1与AP之间具有关联关系,则可以省略STA1与AP之间相互发送关联请求帧的流程。
在ATI阶段,AP可以向STA1发送轮询帧。之后,STA1向AP发送SPR帧,以请求AP分配用于反馈雷达测试数据的SP。AP向STA1发送宣告帧,该宣告帧包括用于反馈雷达测试数据的SP的信息。
在DTI阶段,STA1在用于反馈雷达测试数据的SP内主动反馈雷达测试数据。
如图18所示,为本申请实施例提供的一种雷达测试方法,该方法包括以下步骤:
S601、第二设备向M个第一设备发送第一指示帧,以使得所述M个第一设备接收所述第一指示帧。
可选的,所述M个第一设备均具有雷达测试能力。可以理解的是,第二设备可以根据图13所示的技术方案,确定一个第一设备是否具有雷达测试能力。
作为一种实现方式,第二设备在ATI阶段向M个第一设备发送第一指示帧。相应的,M个第一设备中的每一个第一设备在ATI阶段接收第二设备发送的第一指示帧。M为正整数。
其中,所述第一指示帧用于指示雷达测试的调度信息。所述雷达测试的调度信息包括以下参数之一:雷达数据反馈类型、雷达SP的信息、雷达收发控制信息。
雷达SP的信息至少包括第二SP的信息和第三SP的信息。其中,第二SP是用于雷达测试的SP。第三SP是用于反馈雷达测试数据的SP。雷达SP的信息可以包括:第二SP的时域资源、第三SP的时域资源等。
雷达收发控制信息用于指示M个第一设备中每一个第一设备在雷达测试过程中的功能。或者说,雷达收发控制信息用于指示M个第一设备中每一个第一设备是雷达的接收端还是发送端。又或者说,雷达收发控制信息用于指示M个第一设备中作为雷达接收端的第一设备,以及作为雷达发送端的第一设备。
可选的,第一指示帧还包括雷达测试类型。雷达测试类型包括:单站雷达测试和多站雷达测试。
可选的,如图19所示,为本申请实施例提供的一种第一指示帧的帧结构的示意图。其中,第一指示帧至少包括以下比特域之一:帧控制、持续时间、发送地址、接收地址、雷达测试类型、雷达单元(radar element)、以及帧校验序列。
雷达单元比特域至少包括以下比特域:雷达参数、雷达SP、以及雷达发送/接收控制(radar sender/receiver control)。其中,雷达参数比特域可以参见上文中相关的描述(例如图12所示的信标帧中雷达参数比特域的相关描述),在此不再赘述。雷达SP比特域用于承载雷达SP的信息。雷达发送/接收控制比特域用于承载雷达信息。
S602、所述M个第一设备分别向所述第二设备发送第一响应帧,以使得所述第二设备接受所述M个第一设备分别发送的第一响应帧。
其中,所述第一响应帧用于响应第一指示帧。或者说,所述第一响应帧用于指示所述第一设备已接收到所述第一指示帧。
作为一种实现方式,对于M个第一设备中的每一个第一设备来说,第一设备在ATI阶段向第二设备发送第一响应帧。相应的,第二设备在ATI阶段接收第一设备发送的第一响应帧。
S603、所述第二设备向N个第一设备发送第二指示帧,以使得所述N个第一设备接收到所述第二设备发送的第二指示帧。
其中,所述第二指示帧用于指示所述N个第一设备进行雷达测试。可选的,第二指示帧可以以触发帧的形式实现。
需要说明的是,所述N个第一设备是所述M个第一设备的子集。N为小于等于M的正整数。
作为一种实现方式,所述第二设备在第二SP内向N个第一设备发送第二指示帧。相应的,所述N个第一设备中的每一个第一设备在第二SP内接收第二设备发送的第二指示帧。
S604、所述N个第一设备根据雷达测试的调度信息进行雷达测试。
作为一种实现方式,所述N个第一设备在第二SP内进行雷达测试。具体的,对于N个第一设备中的任一第一设备来说,若第一设备作为雷达的发送端,则该第一设备以扇区扫描的方式发送雷达信号;若第一设备作为雷达的接收端,则该第一设备以准全向的方式接收雷达信号。
可选的,N个第一设备在完成雷达测试之后,N个第一设备中的每一个第一设备可以向第二设备发送第二响应信息,该第二响应信息用于指示第一设备已完成雷达测试。
需要说明的是,在第二SP中,步骤S603和步骤S604可以执行多次。也即,第二设备可以多次向N个第一设备发送第二指示帧,以使得N个第一设备进行多轮雷达测试。可选的,在多轮雷达测试过程中,作为雷达发送端的第一设备可以是不同的。例如,第一轮雷达测试过程中,STA1发送雷达信号,STA2和STA3接收雷达信号。第二轮雷达测试中,STA2发送雷达信号,STA3和STA4接收雷达信号。
基于图18所示的技术方案,第二设备发送第一指示帧,以使得多个第一设备获知雷达测试的调度信息。之后,第二设备向第一设备发送第二指示帧,以统一调度多个第一设备根据雷达测试的调度信息进行雷达测试,从而实现多站雷达测试。
在基于图18所示的方法进行雷达测试之后,如图20所示,为本申请实施例提供的一种雷达测试数据的反馈方法,该方法包括以下步骤:
S701、第二设备向执行雷达测试的第一设备发送第三指示帧,以使得执行雷达测试的第一设备接收所述第三指示帧。
其中,所述第三指示帧用于指示所述执行雷达测试的第一设备反馈雷达测试数据。可选的,第三指示帧可以以触发帧或者轮询帧的形式实现。
作为一种实现方式,第二设备在第三SP内向所述执行雷达测试的第一设备发送第三指示帧。相应的,所述执行雷达测试的第一设备在第三SP内接收第二设备发送的第三指示帧。
S702、所述执行雷达测试的第一设备向所述第二设备发送雷达测试数据,以使得所述第二设备接收到雷达测试数据。
作为一种实现方式,所述执行雷达测试的第一设备在第三SP内向第二设备发送雷达测试数据。相应的,第二设备在第三SP内接收所述执行雷达测试的第一设备发送的雷达测试数据。
基于图20所示的技术方案,第二设备通过向第一设备发送第三指示帧,以使得第一设备反馈雷达测试数据。这样一来,在多个第一设备反馈雷达测试数据之后,第二设备可以综合多个第一设备反馈的雷达测试数据,有效的分析出被测物体的相关信息(例如空间位置)。
下面结合图21以举例的方式来具体说明图18和图20所示的技术方案。
如图21所示,在ATI阶段,AP向STA1、STA2、以及STA3发送第一指示帧;之后,STA1、STA2、以及STA3分别向AP发送第一响应帧。
在第二SP,在AP第一次向STA1、STA2以及STA3发送第二指示帧后,STA1以扇区扫描的方式发送雷达信号,STA2和STA3以准全向的方式接收雷达信号。在AP第二次向STA、STA2以及STA3发送第二指示帧后,STA2以扇区扫描的方式发送雷达信号,STA1和STA3以准全向的方式接收雷达信号。在AP第三次向STA、STA2以及STA3发送第二指示帧后,STA3以扇区扫描的方式发送雷达信号,STA1和STA2以准全向的方式接收雷达信号。
在第三SP,AP分别向STA1、STA2、以及STA3分别发送第三指示帧;STA1、 STA2、以及STA3分别向AP发送雷达测试数据。
上述主要从每一个网元之间交互的角度对本申请实施例提供的方案进行了介绍。可以理解的是,每一个网元,例如第一设备和第二设备,为了实现上述功能,其包含了执行每一个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本申请的范围。
本申请实施例可以根据上述方法示例对装置进行功能模块的划分,例如,可以对应每一个功能划分每一个功能模块,也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现,也可以采用软件功能模块的形式实现。需要说明的是,本申请实施例中对模块的划分是示意性的,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式。下面以采用对应每一个功能划分每一个功能模块为例进行说明:
图22为本申请实施例提供的一种通信装置的结构示意图。如图22所示,通信装置包括:处理单元101和通信单元102。
(1)若通信装置作为第一设备时,该通信装置可以执行以下方案一或者方案二。
方案一、
处理单元101,用于生成第二类型扫描帧,所述第二类型扫描帧包括雷达信号。通信单元102,用于在波束赋形训练阶段发送一个或多个第二类型扫描帧。
一种可能的设计中,处理单元101,还用于根据FSS值,确定第二类型扫描帧的发送个数。
可选的,FSS值可以根据第二设备发送的信标帧确定。
一种可能的设计中,处理单元101,具体用于根据FSS值以及第一对应关系,确定第二类型扫描帧的发送个数;其中,所述第一对应关系为所述FSS值与所述第二类型扫描帧的发送个数之间的对应关系。
可选的,第二类型扫描帧为第二类型扇区扫描SSW帧,或者第二类型短扇区扫描short SSW帧。所述第一对应关系可以如上文中表2所示。
一种可能的设计中,第二类型扫描帧中雷达信号的时间长度根据以下公式确定:
其中,TXTIME(radar signal)表示雷达信号的时间长度,TXTIME(第一类型扫描帧)为第一类型扫描帧的时间长度,SBIFS表示短波束形成帧间间隔,x表示FSS值对应的第一类型扫描帧的发送个数,y表示FSS值对应的第二类型扫描帧的发送个数。
一种可能的设计中,处理单元101,具体用于根据FSS值和雷达信号的时间长度,确定所述第二类型扫描帧的发送个数。
一种可能的设计中,第二类型扫描帧的发送个数根据以下公式确定:
其中,m表示所述第二类型扫描帧的发送个数。
一种可能的设计中,处理单元101,具体用于根据FSS值、雷达信号的长度类型、以及第二对应关系,确定第二类型扫描帧的发送个数;其中,所述第二对应关系为FSS值、雷达信号的长度类型与第二类型扫描帧的发送个数之间的对应关系。
一种可能的设计中,若对于同一FSS值,第二类型扫描帧的发送个数与第一类型扫描帧的发送个数相同,则扇区扫描时隙根据以下公式确定:
aSSSlotTime=aAirPropagationTime+assduration+radar signal length*N+MBIFS+aSSFBDuration+MBIFS;
其中,aSSSlotTime表示扇区扫描时隙的时间长度。aAirPropagationTime表示第一设备和第二设备之间的传播时延。assduration表示第一设备传输对应FSS值下第一类型扫描帧所需的时间,radar signal length表示第二类型扫描帧中雷达信号的时间长度,N表示第二类型扫描帧的发送个数,aSSFBDuration表示第二设备执行SSW反馈过程所需的时间,MBIFS表示中等波束赋形帧间间隔。
一种可能的设计中,通信单元102,还用于接收第二设备发送的信标帧,所述信标帧包括雷达测试信息。
一种可能的设计中,雷达测试信息至少包括以下参数之一:雷达数据反馈类型、雷达信号的长度类型、以及指示信息。其中,所述雷达数据反馈类型用于指示待反馈的雷达测试数据。所述雷达信号的长度类型用于确定雷达信号的时间长度。所述指示信息用于指示一个或多个需要进行雷达测试的第一设备。
一种可能的设计中,通信单元102,还用于在第一SP内向第二设备发送雷达测试数据,所述第一SP为用于反馈雷达测试数据的SP。
一种可能的设计中,通信单元102,还用于向第二设备发送关联请求帧,所述关联请求帧用于指示所述第一设备是否具有雷达测试能力。
方案二、
通信单元102,用于接收第二设备发送的第一指示帧,所述第一指示帧用于指示雷达测试的调度信息;向第二设备发送第一响应帧,第一响应帧用于响应第一指示帧;接收第二设备发送的第二指示帧,第二指示帧用于指示第一设备进行雷达测试。处理单元101,用于根据雷达测试的调度信息进行雷达测试。
一种可能的设计中,雷达测试的调度信息至少包括以下参数之一:雷达SP的信息、雷达数据反馈类型、以及雷达收发控制信息。其中,雷达SP的信息包括第二SP的信息和第三SP的信息,第二SP为用于雷达测试的SP,第三SP为用于反馈雷达测试数据的SP。雷达数据反馈类型用于指示待反馈的雷达测试数据。雷达收发控制信息用于指示M个第一设备中每一个第一设备在雷达测试中的功能,M为正整数。
一种可能的设计中,通信单元102,具体用于在第二SP内接收第二设备发送的第二指示帧。
一种可能的设计中,通信单元102,具体用于在第二SP内根据雷达测试的调度信息进行雷达测试。
一种可能的设计中,处理单元101,具体用于若所述第一设备作为雷达的发送端,则以扇区扫描的方式发送雷达信号;若所述第一设备作为雷达的接收端,则以准全向的方式接收雷达信号。
一种可能的设计中,通信单元102,还用于在第二SP内向第二设备发送第二响应信息,第二响应信息用于指示第一设备已完成雷达测试。
一种可能的设计中,通信单元102,还用于接收第二设备发送的第三指示信息,第三指示信息用于指示第一设备反馈雷达测试数据;向第二设备发送雷达测试数据。
一种可能的设计中,通信单元102,具体用于在第三SP内接收第二设备发送的第三指示信息。
一种可能的设计中,通信单元102,具体用于在第三SP内向第二设备发送雷达测试数据。
一种可能的设计中,通信单元102,还用于向第二设备发送关联请求帧,所述关联请求帧用于指示所述第一设备是否具有雷达测试能力。
(2)若通信装置作为第二设备时,该通信装置可以执行以下方案三或者方案四。
方案三、
处理单元101,用于生成信标帧,该信标帧包括雷达测试信息。通信单元102,用于向一个或多个第一设备发送信标帧。
一种可能的设计中,雷达测试信息至少包括以下参数之一:雷达数据反馈类型、雷达信号的长度类型、以及指示信息。其中,所述雷达数据反馈类型用于指示待反馈的雷达测试数据。所述雷达信号的长度类型用于确定雷达信号的时间长度。所述指示信息用于指示一个或多个需要进行雷达测试的第一设备。
一种可能的设计中,信标帧还包括FSS值,FSS值用于确定第二类型扫描帧的发送个数。
一种可能的设计中,第二类型扫描帧的发送个数与FSS值之间存在对应关系。该对应关系可以参考上文中的表2。
一种可能的设计中,第二类型扫描帧中雷达信号的时间长度根据以下公式确定:
其中,TXTIME(radar signal)表示雷达信号的时间长度,TXTIME(第一类型扫描帧)为第一类型扫描帧的时间长度,SBIFS表示短波束形成帧间间隔,x表示FSS值对应的第一类型扫描帧的发送个数,y表示FSS值对应的第二类型扫描帧的发送个数。
一种可能的设计中,第二类型扫描帧的发送个数根据FSS值和雷达信号的时间长度来确定。
一种可能的设计中,第二类型扫描帧的发送个数根据以下公式确定:
其中,m表示所述第二类型扫描帧的发送个数。
一种可能的设计中,FSS值、雷达信号的长度类型与第二类型扫描帧的发送个数 之间存在对应关系。
一种可能的设计中,若对于同一FSS值,第二类型扫描帧的发送个数与第一类型扫描帧的发送个数相同,则扇区扫描时隙根据以下公式确定:
aSSSlotTime=aAirPropagationTime+assduration+radar signal length*N+MBIFS+aSSFBDuration+MBIFS;
其中,aSSSlotTime表示扇区扫描时隙的时间长度。aAirPropagationTime表示第一设备和第二设备之间的传播时延。assduration表示第一设备传输对应FSS值下第一类型扫描帧所需的时间,radar signal length表示第二类型扫描帧中雷达信号的时间长度,N表示第二类型扫描帧的发送个数,aSSFBDuration表示第二设备执行SSW反馈过程所需的时间,MBIFS表示中等波束赋形帧间间隔。
一种可能的设计中,通信单元102,还用于在第一SP内接收第一设备发送的雷达测试数据,所述第一SP为用于反馈雷达测试数据的SP。
一种可能的设计中,通信单元102,还用于接收第一设备发送的关联请求帧,关联请求帧用于指示所述第一设备是否具有雷达测试能力。处理单元101,还用于根据关联请求帧,确定第一设备是否具有雷达测试能力。
方案四、
处理单元101,用于生成第一指示帧。通信单元102,用于向M个第一设备发送第一指示帧,所述第一指示帧用于指示雷达测试的调度信息,M为正整数;分别接收M个第一设备中每一个第一设备发送的第一响应帧,第一响应帧用于响应第一指示帧;向N个第一设备发送第二指示帧,第二指示帧用于指示第一设备进行雷达测试,N个第一设备为M个第一设备的子集,N为小于等于M的正整数。
一种可能的设计中,雷达测试的调度信息至少包括以下参数之一:雷达SP的信息、雷达数据反馈类型、以及雷达收发控制信息。其中,雷达SP的信息包括第二SP的信息和第三SP的信息,第二SP为用于雷达测试的SP,第三SP为用于反馈雷达测试数据的SP。雷达数据反馈类型用于指示待反馈的雷达测试数据。雷达收发控制信息用于指示M个第一设备中每一个第一设备在雷达测试中的功能,M为正整数。
一种可能的设计中,通信单元102,具体用于在第二SP内向N个第一设备发送第二指示帧。
一种可能的设计中,通信单元102,具体用于在第二SP内接收第一设备发送的第二响应信息,第二响应信息用于指示第一设备已完成雷达测试。
一种可能的设计中,通信单元102,还用于向第一设备发送第三指示信息,第三指示信息用于指示第一设备反馈雷达测试数据;接收第一设备发送的雷达测试数据。
一种可能的设计中,通信单元102,具体用于在第三SP内向第一设备发送第三指示信息。
一种可能的设计中,通信单元102,具体用于在第三SP内接收第一设备发送的雷达测试数据。
一种可能的设计中,通信单元102,还用于接收第一设备发送的关联请求帧,所述关联请求帧用于指示所述第一设备是否具有雷达测试能力。处理单元101,还用于根据关联请求帧,确定第一设备是否具有雷达测试能力。
上述本申请实施例提供的通信装置,可以有多种产品形态来实现,例如,所述通信装置可配置成通用处理系统;又例如,所述通信装置可以由一般性的总线体系结构来实现;又例如,所述通信装置可以由专用集成电路(application specific integrated circuit,ASIC)来实现等。下面提供本申请实施例所述的通信装置可能的几种产品形态,应当理解的是,以下的产品形态仅为举例,不对本申请实施例所述的通信装置的可能的产品形态进行限定。
图23是本申请实施例所述的通信装置可能的产品形态的结果图。
作为一种可能的产品形态,本申请实施例所述的通信装置可以为通信设备,所述通信设备包括处理器201和收发器202。可选的,所述通信设备还包括存储介质203。
当所述通信设备为第一设备时,所述处理器201用于执行图3中的步骤S101,所述收发器202用于执行图3中的步骤S102。或者,所述收发器202用于执行图10中的步骤S201和S202。或者,所述收发器202用于执行图13中的步骤S301。或者,所述收发器202用于执行图15中的步骤S501、S502、S503以及S401。或者,所述收发器202用于执行图18中的步骤S601、S602以及S603,所述处理器201用于执行图18中的步骤S604。或者,所述收发器用于执行图20中的步骤S701和S702。
当所述通信设备为第二设备时,所述收发器202用于执行图10中的步骤S201。或者,所述收发器202用于执行图13中的步骤S301,所述处理器201用于执行图13中的步骤S302。或者,所述收发器202用于执行图15中的步骤S501、S502、S503以及S401。或者,所述收发器202用于执行图18中的步骤S601、S602和S603。或者,所述收发器用于执行图20中的步骤S701和S702。
作为另一种可能的产品形态,本申请实施例所述的通信装置也可以由通用处理器或者专用处理器来实现,也即俗称的芯片来实现。该芯片包括:处理电路201和收发管脚202。可选的,该芯片还可以包括存储介质203。
当所述芯片用于第一设备时,所述处理电路201用于执行图3中的步骤S101,所述收发管脚202用于执行图3中的步骤S102。或者,所述收发管脚202用于执行图10中的步骤S201和S202。或者,所述收发管脚202用于执行图13中的步骤S301。或者,所述收发管脚202用于执行图15中的步骤S501、S502、S503以及S401。或者,所述收发管脚202用于执行图18中的步骤S601、S602和S603,所述处理电路201用于执行图18中的步骤S604。或者,所述收发管脚用于执行图20中的步骤S701和S702。
当所述芯片用于第二设备时,所述收发管脚202用于执行图10中的步骤S201。或者,所述收发管脚202用于执行图13中的步骤S301,所述处理电路201用于执行图13中的步骤S302。或者,所述收发管脚202用于执行图15中的步骤S501、S502、S503以及S401。或者,所述收发管脚202用于执行图18中的步骤S601、S602和S603。或者,所述收发管脚用于执行图20中的步骤S701和S702。
作为另一种可能的产品形态,本申请实施例所述的通信装置也可以使用下述电路或者器件来实现:一个或多个现场可编程门阵列(field programmable gate array,FPGA)、可编程逻辑器件(programmable logic device,PLD)、控制器、状态机、门逻辑、分立硬件部件、任何其他适合的电路、或者能够执行本申请通篇所描述的各种功能的电路的任意组合。
尽管在此结合各实施例对本申请进行了描述,然而,在实施所要求保护的本申请过程中,本领域技术人员通过查看所述附图、公开内容、以及所附权利要求书,可理解并实现所述公开实施例的其他变化。在权利要求中,“包括”(comprising)一词不排除其他组成部分或步骤,“一”或“一个”不排除多个的情况。单个处理器或其他单元可以实现权利要求中列举的若干项功能。相互不同的从属权利要求中记载了某些措施,但这并不表示这些措施不能组合起来产生良好的效果。
尽管结合具体特征及其实施例对本申请进行了描述,显而易见的,在不脱离本申请的精神和范围的情况下,可对其进行各种修改和组合。相应地,本说明书和附图仅仅是所附权利要求所界定的本申请的示例性说明,且视为已覆盖本申请范围内的任意和所有修改、变化、组合或等同物。显然,本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样,倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内,则本申请也意图包含这些改动和变型在内。
Claims (89)
- 一种雷达测试方法,其特征在于,所述方法包括:第一设备生成第二类型扫描帧,所述第二类型扫描帧包括雷达信号;所述第一设备在波束赋形训练阶段发送一个或多个所述第二类型扫描帧。
- 根据权利要求1所述的雷达测试方法,其特征在于,所述方法还包括:所述第一设备根据FSS值,确定第二类型扫描帧的发送个数。
- 根据权利要求2所述的雷达测试方法,其特征在于,所述第一设备根据FSS值,确定第二类型扫描帧的发送个数,包括:所述第一设备根据FSS值以及第一对应关系,确定第二类型扫描帧的发送个数;其中,所述第一对应关系为所述FSS值与所述第二类型扫描帧的发送个数之间的对应关系。
- 根据权利要求2所述的雷达测试方法,其特征在于,所述第一设备根据FSS值,确定第二类型扫描帧的发送个数,包括:所述第一设备根据FSS值和雷达信号的时间长度,确定所述第二类型扫描帧的发送个数。
- 根据权利要求2所述的雷达测试方法,其特征在于,所述第一设备根据FSS值,确定第二类型扫描帧的发送个数,包括:所述第一设备根据FSS值、雷达信号的长度类型、以及第二对应关系,确定第二类型扫描帧的发送个数;其中,所述第二对应关系为FSS值、雷达信号的长度类型与第二类型扫描帧的发送个数之间的对应关系。
- 根据权利要求2所述的雷达测试方法,其特征在于,若对于同一FSS值,第二类型扫描帧的发送个数与第一类型扫描帧的发送个数相同,则扇区扫描时隙根据以下公式确定:aSSSlotTime=aAirPropagationTime+assduration+radar signal length*N+MBIFS+aSSFBDuration+MBIFS;其中,aSSSlotTime表示扇区扫描时隙的时间长度,aAirPropagationTime表示第一设备和第二设备之间的传播时延,assduration表示第一设备传输对应FSS值下第一类型扫描帧所需的时间,radar signal length表示第二类型扫描帧中雷达信号的时间长度,N表示第二类型扫描帧的发送个数,aSSFBDuration表示第二设备执行SSW反馈过程所需的时间,MBIFS表示中等波束赋形帧间间隔。
- 根据权利要求1至9任一项所述的雷达测试方法,其特征在于,所述方法还包括:所述第一设备接收第二设备发送的信标帧,所述信标帧包括雷达测试信息。
- 根据权利要求10所述的雷达测试方法,其特征在于,所述雷达测试信息至少包括以下参数之一:雷达数据反馈类型、雷达信号的长度类型、以及指示信息;其中,所述雷达数据反馈类型用于指示待反馈的雷达测试数据;所述雷达信号的长度类型用于确定雷达信号的时间长度;所述指示信息用于指示一个或多个需要进行雷达测试的第一设备。
- 根据权利要求1至11任一项所述的雷达测试方法,其特征在于,所述方法还包括:所述第一设备在第一服务区间SP内向第二设备发送雷达测试数据,所述第一SP为用于反馈雷达测试数据的SP。
- 根据权利要求1至11任一项所述的雷达测试方法,其特征在于,所述方法还包括:所述第一设备向第二设备发送关联请求帧,所述关联请求帧用于指示所述第一设备是否具有雷达测试能力。
- 一种雷达测试方法,其特征在于,所述方法包括:第二设备生成信标帧,所述信标帧包括雷达测试信息;所述第二设备向一个或多个第一设备发送所述信标帧。
- 根据权利要求14所述的雷达测试方法,其特征在于,所述雷达测试信息至少包括以下参数之一:雷达数据反馈类型、雷达信号的长度类型、以及指示信息;其中,所述雷达数据反馈类型用于指示待反馈的雷达测试数据;所述雷达信号的长度类型用于确定雷达信号的时间长度;所述指示信息用于指示一个或多个需要进行雷达测试的第一设备。
- 根据权利要求14或15所述的雷达测试方法,其特征在于,所述信标帧还包括FSS值,所述FSS值用于确定第二类型扫描帧的发送个数,所述第二类型扫描帧包括雷达信号。
- 根据权利要求16所述的雷达测试方法,其特征在于,所述第二类型扫描帧的发送个数根据FSS值和雷达信号的时间长度来确定。
- 根据权利要求16所述的雷达测试方法,其特征在于,所述FSS值、雷达信号的长度类型与所述第二类型扫描帧的发送个数之间存在对应关系。
- 根据权利要求16所述的雷达测试方法,其特征在于,若对于同一FSS值,第二类型扫描帧的发送个数与第一类型扫描帧的发送个数相同,则扇区扫描时隙根据以下公式确定:aSSSlotTime=aAirPropagationTime+assduration+radar signal length*N+MBIFS+aSSFBDuration+MBIFS;其中,aSSSlotTime表示扇区扫描时隙的时间长度,aAirPropagationTime表示第一设备和第二设备之间的传播时延,assduration表示第一设备传输对应FSS值下第一类型扫描帧所需的时间,radar signal length表示第二类型扫描帧中雷达信号的时间长度,N表示第二类型扫描帧的发送个数,aSSFBDuration表示第二设备执行SSW反馈过程所需的时间,MBIFS表示中等波束赋形帧间间隔。
- 根据权利要求14至22任一项所述的雷达测试方法,其特征在于,所述方法还包括:所述第二设备在第一SP内接收所述第一设备发送的雷达测试数据,所述第一SP为用于反馈雷达测试数据的SP。
- 根据权利要求14至22任一项所述的雷达测试方法,其特征在于,所述方法 还包括:所述第二设备接收所述第一设备发送的关联请求帧,所述关联请求帧用于指示所述第一设备是否具有雷达测试能力;所述第二设备根据所述关联请求帧,确定所述第一设备是否具有雷达测试能力。
- 一种雷达测试方法,其特征在于,所述方法包括:第一设备接收第二设备发送的第一指示帧,所述第一指示帧用于指示雷达测试的调度信息;所述第一设备向所述第二设备发送第一响应帧,所述第一响应帧用于响应所述第一指示帧;所述第一设备接收所述第二设备发送的第二指示帧,所述第二指示帧用于指示所述第一设备进行雷达测试;所述第一设备根据所述雷达测试的调度信息进行雷达测试。
- 根据权利要求25所述的雷达测试方法,其特征在于,所述雷达测试的调度信息至少包括以下参数之一:雷达SP的信息、雷达数据反馈类型、以及雷达收发控制信息;其中,雷达SP的信息包括第二SP的信息和第三SP的信息,第二SP为用于雷达测试的SP,第三SP为用于反馈雷达测试数据的SP;雷达数据反馈类型用于指示待反馈的雷达测试数据;雷达收发控制信息用于指示M个第一设备中每一个第一设备在雷达测试中的功能,M为正整数。
- 根据权利要求26所述的雷达测试方法,其特征在于,所述第一设备接收所述第二设备发送的第二指示帧,包括:所述第一设备在所述第二SP内接收所述第二设备发送的所述第二指示帧。
- 根据权利要求26或27所述的雷达测试方法,其特征在于,所述第一设备根据所述雷达测试的调度信息进行雷达测试,包括:所述第一设备在所述第二SP内根据所述雷达测试的调度信息进行雷达测试。
- 根据权利要求26至28任一项所述的雷达测试方法,其特征在于,所述第一设备根据所述雷达测试的调度信息进行雷达测试,包括:若所述第一设备作为雷达的发送端,则所述第一设备以扇区扫描的方式发送雷达信号;若所述第一设备作为雷达的接收端,则所述第一设备以准全向的方式接收雷达信号。
- 根据权利要求26至29任一项所述的雷达测试方法,其特征在于,所述方法还包括:所述第一设备在所述第二SP内向所述第二设备发送第二响应信息,所述第二响应信息用于指示所述第一设备已完成雷达测试。
- 根据权利要求26至30任一项所述的雷达测试方法,其特征在于,所述方法还包括:所述第一设备接收所述第二设备发送的第三指示信息,所述第三指示信息用于指示所述第一设备反馈雷达测试数据;所述第一设备向所述第二设备发送所述雷达测试数据。
- 根据权利要求31所述的雷达测试方法,其特征在于,所述第一设备接收所述第二设备发送的第三指示信息,包括:所述第一设备在所述第三SP内接收所述第二设备发送的所述第三指示信息。
- 根据权利要求31或32所述的雷达测试方法,其特征在于,所述第一设备向所述第二设备发送所述雷达测试数据,包括:所述第一设备在所述第三SP内向所述第二设备发送所述雷达测试数据。
- 根据权利要求25至33任一项所述的雷达测试方法,其特征在于,所述方法还包括:所述第一设备向所述第二设备发送关联请求帧,所述关联请求帧用于指示所述第一设备是否具有雷达测试能力。
- 一种雷达测试方法,其特征在于,所述方法包括:第二设备向M个第一设备发送第一指示帧,所述第一指示帧用于指示雷达测试的调度信息,M为正整数;所述第二设备分别接收所述M个第一设备中每一个第一设备发送的第一响应帧,所述第一响应帧用于响应所述第一指示帧;所述第二设备向N个第一设备发送第二指示帧,所述第二指示帧用于指示第一设备进行雷达测试,所述N个第一设备为所述M个第一设备的子集,N为小于等于M的正整数。
- 根据权利要求35所述的雷达测试方法,其特征在于,所述雷达测试的调度信息至少包括以下参数之一:雷达SP的信息、雷达数据反馈类型、以及雷达收发控制信息;其中,雷达SP的信息包括第二SP的信息和第三SP的信息,第二SP为用于雷达测试的SP,第三SP为用于反馈雷达测试数据的SP;雷达数据反馈类型用于指示待反馈的雷达测试数据;雷达收发控制信息用于指示M个第一设备中每一个第一设备在雷达测试中的功能,M为正整数。
- 根据权利要求36所述的雷达测试方法,其特征在于,所述第二设备向N个第一设备发送第二指示帧,包括:所述第二设备在所述第二SP内向所述N个第一设备发送所述第二指示帧。
- 根据权利要求36或37所述的雷达测试方法,其特征在于,所述方法还包括:所述第二设备在所述第二SP内接收所述第一设备发送的第二响应信息,所述第二响应信息用于指示所述第一设备已完成雷达测试。
- 根据权利要求36至38任一项所述的雷达测试方法,其特征在于,所述方法还包括:所述第二设备向所述第一设备发送第三指示信息,所述第三指示信息用于指示所述第一设备反馈雷达测试数据;所述第二设备接收所述第一设备发送的雷达测试数据。
- 根据权利要求39所述的雷达测试方法,其特征在于,所述第二设备向所述第一设备发送第三指示信息,包括:所述第二设备在所述第三SP内向所述第一设备发送所述第三指示信息。
- 根据权利要求39或40所述的雷达测试方法,其特征在于,所述第二设备接 收所述第一设备发送的所述雷达测试数据,包括:所述第二设备在所述第三SP内接收所述第一设备发送的所述雷达测试数据。
- 根据权利要求35至41任一项所述的雷达测试方法,其特征在于,所述方法还包括:所述第二设备接收所述第一设备发送的关联请求帧,所述关联请求帧用于指示所述第一设备是否具有雷达测试能力;所述第二设备根据所述关联请求帧,确定所述第一设备是否具有雷达测试能力。
- 一种通信装置,其特征在于,所述通信装置应用于第一设备,包括:处理单元和通信单元;所述处理单元,用于生成第二类型扫描帧,所述第二类型扫描帧包括雷达信号;所述通信单元,用于在波束赋形训练阶段发送一个或多个所述第二类型扫描帧。
- 根据权利要求43所述的通信装置,其特征在于,所述处理单元,还用于根据FSS值,确定第二类型扫描帧的发送个数。
- 根据权利要求44所述的通信装置,其特征在于,所述处理单元,具体用于根据FSS值以及第一对应关系,确定第二类型扫描帧的发送个数;其中,所述第一对应关系为所述FSS值与所述第二类型扫描帧的发送个数之间的对应关系。
- 根据权利要求44所述的通信装置,其特征在于,所述处理单元,具体用于根据FSS值和雷达信号的时间长度,确定所述第二类型扫描帧的发送个数。
- 根据权利要求44所述的通信装置,其特征在于,所述处理单元,具体用于根据FSS值、雷达信号的长度类型、以及第二对应关系,确定第二类型扫描帧的发送个数;其中,所述第二对应关系为FSS值、雷达信号的长度类型与第二类型扫描帧的发送个数之间的对应关系。
- 根据权利要求44所述的通信装置,其特征在于,若对于同一FSS值,第二类型扫描帧的发送个数与第一类型扫描帧的发送个数相同,则扇区扫描时隙根据以下公式确定:aSSSlotTime=aAirPropagationTime+assduration+radar signal length*N+MBIFS+aSSFBDuration+MBIFS;其中,aSSSlotTime表示扇区扫描时隙的时间长度,aAirPropagationTime表示第一设备和第二设备间的传播时延,assduration表示第一设备传输对应FSS值下第一类型扫描帧所需的时间,radar signal length表示第二类型扫描帧中雷达信号的时间长度,N表示第二类型扫描帧的发送个数,aSSFBDuration表示第二设备执行SSW反馈过程所需的时间,MBIFS表示中等波束赋形帧间间隔。
- 根据权利要求43至51任一项所述的通信装置,其特征在于,所述通信单元,还用于接收第二设备发送的信标帧,所述信标帧包括雷达测试信息。
- 根据权利要求52所述的通信装置,其特征在于,所述雷达测试信息至少包括 以下参数之一:雷达数据反馈类型、雷达信号的长度类型、以及指示信息;其中,所述雷达数据反馈类型用于指示待反馈的雷达测试数据;所述雷达信号的长度类型用于确定雷达信号的时间长度;所述指示信息用于指示一个或多个需要进行雷达测试的第一设备。
- 根据权利要求43至53任一项所述的通信装置,其特征在于,所述通信单元,还用于在第一服务区间SP内向第二设备发送雷达测试数据,所述第一SP为用于反馈雷达测试数据的SP。
- 根据权利要求43至53任一项所述的通信装置,其特征在于,所述通信单元,还用于向第二设备发送关联请求帧,所述关联请求帧用于指示所述第一设备是否具有雷达测试能力。
- 一种通信装置,其特征在于,所述通信装置应用于第二设备,包括:处理单元和通信单元;所述处理单元,用于生成信标帧,所述信标帧包括雷达测试信息;所述通信单元,用于向一个或多个第一设备发送所述信标帧。
- 根据权利要求56所述的通信装置,其特征在于,所述雷达测试信息至少包括以下参数之一:雷达数据反馈类型、雷达信号的长度类型、以及指示信息;其中,所述雷达数据反馈类型用于指示待反馈的雷达测试数据;所述雷达信号的长度类型用于确定雷达信号的时间长度;所述指示信息用于指示一个或多个需要进行雷达测试的第一设备。
- 根据权利要求56或57所述的通信装置,其特征在于,所述信标帧还包括FSS值,所述FSS值用于确定第二类型扫描帧的发送个数,所述第二类型扫描帧包括雷达信号。
- 根据权利要求58所述的通信装置,其特征在于,所述第二类型扫描帧的发送个数根据FSS值和雷达信号的时间长度来确定。
- 根据权利要求58所述的通信装置,其特征在于,所述FSS值、雷达信号的长度类型与所述第二类型扫描帧的发送个数之间存在对应关系。
- 根据权利要求58所述的通信装置,其特征在于,若对于同一FSS值,第二类型扫描帧的发送个数与第一类型扫描帧的发送个数相同,则扇区扫描时隙根据以下公式确定:aSSSlotTime=aAirPropagationTime+assduration+radar signal length*N+MBIFS+aSSFBDuration+MBIFS;其中,aSSSlotTime表示扇区扫描时隙的时间长度,aAirPropagationTime表示第一设备和第二设备之间的传播时延,assduration表示第一设备传输对应FSS值下第一类型扫描帧所需的时间,radar signal length表示第二类型扫描帧中雷达信号的时间长度,N表示第二类型扫描帧的发送个数,aSSFBDuration表示第二设备执行SSW反馈过程所需的时间,MBIFS表示中等波束赋形帧间间隔。
- 根据权利要求56至64任一项所述的通信装置,其特征在于,所述通信单元,还用于在第一SP内接收所述第一设备发送的雷达测试数据,所述第一SP为用于反馈雷达测试数据的SP。
- 根据权利要求56至64任一项所述的通信装置,其特征在于,所述通信单元,还用于接收所述第一设备发送的关联请求帧,所述关联请求帧用于指示所述第一设备是否具有雷达测试能力;所述处理单元,还用于根据所述关联请求帧,确定所述第一设备是否具有雷达测试能力。
- 一种通信装置,其特征在于,所述通信装置应用于第一设备,包括:通信单元,用于接收第二设备发送的第一指示帧,所述第一指示帧用于指示雷达测试的调度信息;所述通信单元,用于向所述第二设备发送第一响应帧,所述第一响应帧用于响应所述第一指示帧;所述通信单元,还用于接收所述第二设备发送的第二指示帧,所述第二指示帧用于指示所述第一设备进行雷达测试;处理单元,用于根据所述雷达测试的调度信息进行雷达测试。
- 根据权利要求67所述的通信装置,其特征在于,所述雷达测试的调度信息至少包括以下参数之一:雷达SP的信息、雷达数据反馈类型、以及雷达收发控制信息;其中,雷达SP的信息包括第二SP的信息和第三SP的信息,第二SP为用于雷达测试的SP,第三SP为用于反馈雷达测试数据的SP;雷达数据反馈类型用于指示待反馈的雷达测试数据;雷达收发控制信息用于指示M个第一设备中每一个第一设备在雷达测试中的功能,M为正整数。
- 根据权利要求68所述的通信装置,其特征在于,所述通信单元,具体用于在所述第二SP内接收所述第二设备发送的所述第二指示帧。
- 根据权利要求68或69所述的通信装置,其特征在于,所述处理单元,具体用于在所述第二SP内根据所述雷达测试的调度信息进行雷达测试。
- 根据权利要求68至70任一项所述的通信装置,其特征在于,所述通信单元,用于当所述第一设备作为雷达的发送端时,以扇区扫描的方式发送雷达信号;当所述第一设备作为雷达的接收端时,以准全向的方式接收雷达信号。
- 根据权利要求68至71任一项所述的通信装置,其特征在于,所述通信单元,还用于在所述第二SP内向所述第二设备发送第二响应信息,所述第二响应信息用于指示所述处理单元已完成雷达测试。
- 根据权利要求68至72任一项所述的通信装置,其特征在于,所述通信单元,还用于接收所述第二设备发送的第三指示信息,所述第三指示信息用于指示所述第一设备反馈雷达测试数据;向所述第二设备发送所述雷达测试数据。
- 根据权利要求73所述的通信装置,其特征在于,所述通信单元,具体用于在所述第三SP内接收所述第二设备发送的所述第三指示信息。
- 根据权利要求73或74所述的通信装置,其特征在于,所述通信单元,具体用于在所述第三SP内向所述第二设备发送所述雷达测试数据。
- 根据权利要求67至75任一项所述的通信装置,其特征在于,所述通信单元,还用于向所述第二设备发送关联请求帧,所述关联请求帧用于指示所述处理单元是否具有雷达测试能力。
- 一种通信装置,其特征在于,所述通信装置应用于第二设备,包括:处理单元,用于生成第一指示帧;通信单元,用于向M个第一设备发送第一指示帧,所述第一指示帧用于指示雷达测试的调度信息,M为正整数;分别接收所述M个第一设备中每一个第一设备发送的第一响应帧,所述第一响应帧,所述第一响应帧用于响应所述第一指示帧;向N个第一设备发送第二指示帧,所述第二指示帧用于指示第一设备进行雷达测试,所述N个第一设备为所述M个第一设备的子集,N为小于等于M的正整数。
- 根据权利要求77所述的通信装置,其特征在于,所述雷达测试的调度信息至少包括以下参数之一:雷达SP的信息、雷达数据反馈类型、以及雷达收发控制信息;其中,雷达SP的信息包括第二SP的信息和第三SP的信息,第二SP为用于雷达测试的SP,第三SP为用于反馈雷达测试数据的SP;雷达数据反馈类型用于指示待反馈的雷达测试数据;雷达收发控制信息用于指示M个第一设备中每一个第一设备在雷达测试中的功能,M为正整数。
- 根据权利要求78所述的通信装置,其特征在于,所述通信单元,具体用于在所述第二SP内向所述N个第一设备发送所述第二指示帧。
- 根据权利要求78或79所述的通信装置,其特征在于,所述通信单元,还用于在所述第二SP内接收所述第一设备发送的第二响应信息,所述第二响应信息用于指示所述第一设备已完成雷达测试。
- 根据权利要求78至80任一项所述的通信装置,其特征在于,所述通信单元,还用于向所述第一设备发送第三指示信息,所述第三指示信息用于指示所述第一设备反馈雷达测试数据;接收所述第一设备发送的雷达测试数据。
- 根据权利要求81所述的通信装置,其特征在于,所述通信单元,具体用于在所述第三SP内向所述第一设备发送所述第三指示信息。
- 根据权利要求81或82所述的通信装置,其特征在于,所述通信单元,具体用于在所述第三SP内接收所述第一设备发送的所述雷达测试数据。
- 根据权利要求77至83任一项所述的通信装置,其特征在于,所述通信单元,还用于接收所述第一设备发送的关联请求帧,所述关联请求帧用于指示所述第一设备是否具有雷达测试能力;所述处理单元,还用于根据所述关联请求帧,确定所述第一设备是否具有雷达测试能力。
- 一种通信装置,其特征在于,所述通信装置包括处理器和收发器;所述处理器用于执行上述权利要求1至42中任一项权利要求所涉及的雷达测试方法中的处理操作;所述收发器用于接受处理器的控制,执行上述权利要求1至42中任一种权利要求所涉及的雷达测试方法中的收发操作。
- 一种计算机可读存储介质,其特征在于,所述计算机可读存储介质用于存储 指令;当该指令被计算机读取时,计算机用于执行上述权利要求1至42中任一项权利要求所涉及的雷达测试方法。
- 一种计算机程序产品,其特征在于,所述计算机程序产品包括指令;当计算机读取所述指令时,计算机执行上述权利要求1至42中任一项权利要求所涉及的雷达测试方法。
- 一种芯片,其特征在于,所述芯片包括:处理电路,用于执行上述权利要求1至42中任一项可能权利要求所涉及的雷达测试方法中的处理操作;收发管脚,用于接受处理电路的控制,执行上述权利要求1至42中任一项权利要求所涉及的雷达测试方法中的收发操作;存储器,用于存储指令,所述指令被处理器调用,以执行上述权利要求1至42中任一项权利要求所涉及的雷达测试方法中的处理操作。
- 一种通信系统,其特征在于,包括:第一设备和第二设备;所述第一设备,用于执行上述权利要求1至13或权利要求25至34中任一项权利要求所涉及的雷达测试方法;所述第二设备,用于执行上述权利要求14至24或权利要求35至42中任一项权利要求所涉及的雷达测试方法。
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| WO2023236179A1 (en) * | 2022-06-10 | 2023-12-14 | Qualcomm Incorporated | Sensing processing capability report in user equipment (ue) -assisted bistatic or multistatic sensing |
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| CN116847394A (zh) * | 2022-03-21 | 2023-10-03 | 华为技术有限公司 | 感知方法及装置 |
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| CN112014809A (zh) | 2020-12-01 |
| CN112014809B (zh) | 2025-05-16 |
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