WO2018053876A1 - Procédé de sélection d'antenne, appareil et lunettes vidéo - Google Patents

Procédé de sélection d'antenne, appareil et lunettes vidéo Download PDF

Info

Publication number
WO2018053876A1
WO2018053876A1 PCT/CN2016/100213 CN2016100213W WO2018053876A1 WO 2018053876 A1 WO2018053876 A1 WO 2018053876A1 CN 2016100213 W CN2016100213 W CN 2016100213W WO 2018053876 A1 WO2018053876 A1 WO 2018053876A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
channel
antennas
transmit
working
Prior art date
Application number
PCT/CN2016/100213
Other languages
English (en)
Chinese (zh)
Inventor
范伟
马宁
黄
饶雄斌
高建南
戴劲
Original Assignee
深圳市大疆创新科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市大疆创新科技有限公司 filed Critical 深圳市大疆创新科技有限公司
Priority to PCT/CN2016/100213 priority Critical patent/WO2018053876A1/fr
Priority to CN201680009185.XA priority patent/CN107454997B/zh
Publication of WO2018053876A1 publication Critical patent/WO2018053876A1/fr

Links

Images

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/017—Head mounted
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/318—Received signal strength
    • H04B17/327—Received signal code power [RSCP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/336—Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/345—Interference values
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0404—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas the mobile station comprising multiple antennas, e.g. to provide uplink diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
    • H04B7/0842—Weighted combining
    • H04B7/0848—Joint weighting
    • H04B7/0857—Joint weighting using maximum ratio combining techniques, e.g. signal-to- interference ratio [SIR], received signal strenght indication [RSS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0868—Hybrid systems, i.e. switching and combining
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0868—Hybrid systems, i.e. switching and combining
    • H04B7/0874—Hybrid systems, i.e. switching and combining using subgroups of receive antennas
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/017—Head mounted
    • G02B2027/0178—Eyeglass type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • Embodiments of the present invention relate to the field of antenna technologies, and in particular, to a method, device, and video glasses for selecting an antenna.
  • UAV Unmanned Aerial Vehicle
  • UAV Unmanned Aerial Vehicle
  • the UAV and the control device include a transmitting antenna and a receiving antenna.
  • the UAV sends the image data to the video glasses, and the user wears the video glasses to immerse in the FPV (First Person View).
  • the transmitting antenna of the UAV transmits a downlink signal, the main content of which is real-time video compressed data, the receiving antenna of the video glasses receives the downlink signal; the transmitting antenna of the video glasses transmits an uplink signal, such as a somatosensory control signal, a manual control signal, and status information. Signal, etc., the receiving antenna of the UAV receives the uplink signal.
  • the positional relationship between the antenna of the UAV and the antenna of the video glasses is random and arbitrary.
  • the wireless signal strength received by either the UAV antenna and the video glasses as the receiver may be greatly affected by factors such as the UAV body occlusion, the user's head occlusion, the UAV antenna, and the non-uniformity of the antenna image pattern. Attenuation leads to a drop in signal transmission quality.
  • a scheme that does not sacrifice the flight distance is to install multiple antennas on the UAV and the video glasses, and the installation position ensures that, in general, there is always at least one pair of unobstructed between the antenna of the UAV and the antenna of the video glasses.
  • Transmitting antenna and receiving antenna are all working days Lines, that is, all transmitting antennas can simultaneously transmit signals, and all receiving antennas can receive signals simultaneously.
  • Wireless compliance has a constraint on the total transmit power of multiple antennas. When multiple transmit antennas are used, power is evenly distributed to all transmit antennas.
  • each antenna is connected to a radio frequency circuit, and the communication transceiver has high cost and high power consumption.
  • the communication transceiver has high cost and high power consumption.
  • power is equally distributed to all transmitting antennas, which may waste power resources.
  • the embodiment of the invention provides a method and a device for selecting an antenna, which can reduce the cost of the transceiver and improve the communication quality.
  • a method for selecting an antenna comprising: in a different time period, a first device receives a sounding signal transmitted by a second device on a different channel group, wherein each channel in each channel group a communication channel between the antenna of the second device and an antenna of the first device; the first device performs channel estimation on each channel according to the sounding signal, and determines each channel a channel parameter; the first device determines a working antenna from an antenna of the second device and an antenna of the first device according to the channel parameter.
  • Another aspect provides a method of selecting an antenna, the method comprising: receiving, during different time periods, video glasses receive sounding signals transmitted by a UAV on different channel groups, wherein each channel in each channel group is a communication channel between an antenna of the UAV and an antenna of the video glasses; the video glasses perform channel estimation on each channel according to the sounding signal, and determine channel parameters of each channel; the video The glasses determine a working antenna from an antenna of the UAV and an antenna of the video glasses according to the channel parameter.
  • a device for selecting an antenna comprising: a receiving module, configured to receive, in different time periods, a sounding signal sent by a second device on a different channel group, wherein each channel group Each channel is a communication channel between an antenna of the second device and an antenna of the first device; a channel estimation module, configured to perform, according to the detection signal received by the receiving module, each channel a channel estimation, determining a channel parameter of each channel; a determining module, configured to determine a work from an antenna of the second device and an antenna of the first device according to the channel parameter obtained by the channel estimation module antenna.
  • a video glasses comprising: a receiving module, configured to receive, in different time periods, a sounding signal transmitted by a UAV UAV on different channel groups, wherein each channel in each channel group a communication channel between the antenna of the UAV and an antenna of the video glasses; a channel estimation module, configured to perform channel estimation on each channel according to the sounding signal received by the receiving module, and determine the a channel parameter of each channel; a determining module, configured to determine a working antenna from an antenna of the UAV and an antenna of the video glasses according to the channel parameter obtained by the channel estimation module.
  • a first device for selecting an antenna including a processor, a memory, and a transceiver, wherein the memory is for storing instructions, the processor and the transceiver for instructions stored in accordance with the memory Determining a working antenna, the transceiver for receiving a sounding signal transmitted by the second device on different channel groups in different time periods, wherein each channel in each channel group is an antenna of the second device and a communication channel between the antennas of the first device; the processor is configured to perform channel estimation on each channel according to the sounding signal received by the transceiver, and determine channel parameters of each channel; The processor is further configured to determine a working antenna from an antenna of the second device and an antenna of the first device according to the channel parameter.
  • a video glasses including a processor, a memory, and a transceiver, wherein the memory is for storing instructions, the processor and the transceiver for determining a working antenna based on instructions stored by the memory,
  • the transceiver is configured to receive sounding signals transmitted by the UAV UAV on different channel groups in different time periods, wherein each channel in each channel group is an antenna of the UAV and the video glasses a communication channel between the antennas;
  • the processor is configured to perform channel estimation on each channel according to the sounding signal received by the transceiver, and determine channel parameters of each channel; And determining, according to the channel parameter, a working antenna from an antenna of the UAV and an antenna of the video glasses.
  • the detection signal is received in a time division manner and the channel parameters are estimated, and the working antenna is selected according to the channel parameters, so that the circuit of the transceiver of the communication device can be simplified, power resources are saved, and communication quality is improved.
  • FIG. 1 is a schematic flow chart of a method of selecting an antenna according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of a situation of a channel between an antenna of a UAV and an antenna of video glasses according to an embodiment of the present invention.
  • FIG. 3 is a schematic flow chart of a method of selecting an antenna according to another embodiment of the present invention.
  • FIG. 4 is a schematic diagram showing the result of selecting an antenna according to an embodiment of the present invention.
  • FIG. 5 is a schematic flowchart of a method for selecting an antenna according to still another embodiment of the present invention.
  • Figure 6 is a schematic block diagram of a first device in accordance with one embodiment of the present invention.
  • Figure 7 is a schematic block diagram of a first device of another embodiment of the present invention.
  • Figure 8 is a schematic block diagram of video glasses in accordance with one embodiment of the present invention.
  • FIG. 9 is a schematic block diagram of video glasses according to another embodiment of the present invention.
  • the embodiment of the present invention is applicable to a scenario when communication between devices having multiple antennas, and is particularly suitable for a scenario when communication between devices in motion.
  • the first device and the second device of the embodiment of the present invention may be one of a drone UAV, a wearable device that communicates with the UAV, and a control device for controlling the UAV, and the like.
  • the communication between the devices may be communication between the UAVs, communication between the UAV and the wearable device, communication between the UAV and the control device, or communication between the wearable device and the control device, etc., etc. This is not limited.
  • the wearable device in communication with the UAV may be video glasses or a wristband or the like.
  • the control device for controlling the UAV may be a ground device such as a remote controller or a ground station.
  • the number of antennas on the video glasses side is generally required. It is greater than or equal to 2, preferably greater than or equal to 4.
  • the number of antennas on the UAV side is usually required to be at least greater than 2, and even required to be at least greater than 4.
  • the number of radio frequency circuits can be smaller than the number of antennas. That is, the communication transceivers of the two devices select only a part of the antennas for receiving and transmitting at any time, and the selected antennas are connected to the radio frequency circuit. This can reduce the number of RF circuits in the communication transceiver and reduce the amount of baseband signal processing, thereby reducing cost and power consumption.
  • FIG. 1 is a schematic flowchart of a method 100 of selecting an antenna according to an embodiment of the present invention.
  • the method 100 is performed by a first device, and the method 100 may include the following.
  • the first device receives, in different time periods, a sounding signal sent by the second device on different channel groups, where each channel in each channel group is an antenna and a first device of the second device.
  • the communication channel between the antennas of the device.
  • the first device and the second device may be one of the foregoing devices, and details are not described herein again.
  • the channel group may include one channel (this case usually corresponds to one in the actual operation, one for the transmitting antenna, and one for the receiving antenna), and may also include two or more channels.
  • the number of channels in the middle is not limited.
  • the channel group is obtained by grouping communication channels between the antenna of the second device and the antenna of the first device. In the case where the number of radio frequency circuits is smaller than the number of antennas, only a part of the antennas are operable at the same time, and therefore, the transmission of the detection signals is performed by means of time division. That is, at different time periods, the second device sends a sounding signal to the first device on a different channel group. For different channel groups, the sounding signal may be sent by the second device using the same radio frequency circuit.
  • the first device performs channel estimation on each channel according to the sounding signal, and determines channel parameters of each channel.
  • the channel parameter may include at least one of a channel amplitude and a channel phase. That is, the channel amplitude, or channel phase, or channel amplitude and channel phase are determined based on the sounding signal.
  • the channel parameter of the embodiment of the present invention may further include at least one of a magnitude of noise, an amplitude of interference, and a channel delay. That is, channel estimation may be performed based on the sounding signal to determine at least one of the amplitude of the noise, the magnitude of the interference, and the channel delay.
  • the noise is usually generated by the receiver itself in the receiving end, and the interference is usually generated by other communication devices and received by the receiver in the receiving end.
  • Both noise and interference are the influencing factors that limit the flight distance of the drone.
  • the intensity of the interference is often much larger than the intensity of the noise, which may become the main influencing factor of the flight distance.
  • the specific form of the channel parameters used in determining the working antenna in S130 may be various, which is related to the algorithm of the receiver in the receiving end.
  • the maximum ratio combining of the signal-to-noise ratio can be used as a measure of the performance of an antenna combination, or as a measure of the channel capacity of the antenna combination.
  • the first device determines the working antenna from the antenna of the second device and the antenna of the first device according to the channel parameter.
  • determining the working antenna refers to determining the transmitting antenna and the receiving antenna when actually working.
  • the second device sends a sounding signal to the first device in order to detect the channel of the transmitting antenna of the second device to the receiving antenna of the first device. Therefore, determining the working antenna may be determining the transmit antenna in the second device and the receive antenna in the first device.
  • the determining the working antenna may also be determining the receiving antenna in the second device and the transmitting antenna in the first device, which is not limited in this embodiment of the present invention.
  • the detection signal is received in a time division manner and the channel parameters are estimated, and the working antenna is selected according to the channel parameters, so that the circuit of the transceiver of the communication device can be simplified, power resources are saved, and communication quality is improved.
  • the method 100 may further include: the first device sending the first information to the second device, where the first information includes Information indicating a transmitting antenna used as a working antenna in the second device.
  • the second device may be a transmitting end in actual working
  • the first device may be a receiving end in actual working.
  • the first device can automatically switch the determined receive antenna as the working antenna.
  • the first device notifies the second device by transmitting the first information, and notifies the transmitting antenna serving as the working antenna in the second device.
  • the second device may switch the transmitting antenna immediately, or the second device may perform the switching after receiving the first information for a preset period of time, which is not limited by the embodiment of the present invention.
  • the first device may be the transmitting end in actual working, and the second device may be the receiving end in actual working.
  • the first device determines the receiving antenna used as the working antenna in the second device and is used as the first device After the transmitting antenna of the working antenna, the first device can switch to determine the transmitting antenna to be the working antenna by self-switching. At the same time, the first device notifies the second device by transmitting a message, and notifies the receiving antenna serving as the working antenna in the second device. After receiving the information, the second device may switch the receiving antenna immediately, or the second device may perform the switching after receiving the information for a preset period of time, which is not limited by the embodiment of the present invention.
  • the method 100 may further include: the first device receiving the second information sent by the second device, where the second information includes the channel a parameter; the first device determines a transmit antenna used as a working antenna in the first device according to the channel parameter.
  • the transmitting antenna can be determined by the transmitting end in actual operation, that is, the first device.
  • the first device may not be the device that receives the probe signal, and the probe signal is received by the second device.
  • the second device needs to perform channel estimation according to the sounding signal received from the first device, determine channel parameters, and send the channel parameters to the first device. Since the data amount of the channel parameter may be large, the channel parameters may be compressed and sent to the first device by means of quantitative feedback.
  • the S120 first device performs channel estimation on each channel according to the sounding signal, and determining channel parameters of each channel may include: the first device according to the average value of the detected signals that are measured multiple times, Channel estimation is performed for each channel to determine channel parameters for each channel.
  • the first device may measure the detection signal multiple times in a continuous time, obtain an average value of the detection signal, or a statistical value of the detection signal, and determine channel parameters of each channel according to the average value.
  • the first device may measure the probe signal multiple times, and determine the channel parameters for each of the measured probe signals. Performing necessary post-processing on multiple channel parameters, such as filter smoothing, etc., to obtain the channel parameters that are ultimately used to determine the working antenna.
  • the first device of the S130 determines the working antenna from the antenna of the second device and the antenna of the first device according to the channel parameter, and may include: the first device is configured from the antenna of the second device according to the channel parameter.
  • a combination of a transmitting antenna and a receiving antenna as a working antenna is selected from the antennas of the first device such that the channel capacity of the communication channel between the transmitting antenna and the receiving antenna in the selected combination is the largest with respect to other combined channel capacities. of.
  • the combination that selects the largest channel capacity may be a combination of a transmitting antenna and a receiving antenna that selects the best quality of the received sounding signal.
  • the criterion for judging the quality of the received probe signal can be judged according to the signal parameter. For example, it can be judged according to the signal amplitude, that is, the magnitude of the signal strength. In some algorithms, it can also be judged according to the signal amplitude plus the signal phase. In other algorithms, only the signal phase, or the amplitude of the additional reference noise, the amplitude of the interference, etc. can be obtained to obtain the signal-to-noise ratio (Signal Noise). It is determined by the ratio, SNR, and the like, which are not limited by the embodiment of the present invention.
  • the first device determines the transmit power of each of the transmit antennas used as the working antenna while determining the working antenna based on the channel parameters.
  • the transmit power of each transmit antenna may be non-uniform.
  • the determination of the working antenna and the transmission power of each of the transmitting antennas in the working antenna can be calculated by an algorithm such as a water injection algorithm.
  • the method 100 may further include: the first device sending third information to the second device, where the third information is used to indicate each of the second devices used as a working antenna The transmit power of the antenna.
  • the transmit power of the transmit antenna is determined by the transmit end, and when the transmit end of the actual operation is the first device, and the first device is not the device that receives the probe signal, the method 100 may further include: receiving, by the first device
  • the fourth information sent by the second device, the fourth information includes a channel parameter, and the first device calculates, according to the channel parameter, a transmit power of each transmit antenna used as the working antenna in the first device.
  • the calculation method of the transmit power may be based on the foregoing method, and details are not described herein again.
  • the first device or the second device may simultaneously determine the transmit antenna used as the working antenna and/or each transmit in the first device according to the working state information of the first device.
  • the working status information may include the power of the first device, whether the first device is set to the power saving mode, or the like.
  • the working status information may further include a flight attitude of the UAV, and the like.
  • the power of the first device is low.
  • the transmitting antenna used as the working antenna in the first device it is more inclined to use one transmitting antenna than to use two transmitting antennas.
  • the power of each of the transmitting antennas can be appropriately reduced.
  • Other examples of determining the power of the transmitting antenna and/or each transmitting antenna based on the operational status information are similar to the principle of the example and will not be described herein.
  • the determining, by the first device, the transmit antenna used as the working antenna in the first device according to the channel parameter may include: the first device determining, according to the channel parameter and the working state information of the first device, the first A transmitting antenna used as a working antenna in the device.
  • the calculating, by the first device, the transmit power of each transmit antenna used as the working antenna in the first device according to the channel parameter may include: the first device according to the channel parameter and the first The working state information of the device calculates the transmit power of each of the transmitting antennas used as the working antennas in the first device.
  • the first example is described by taking the first device as a video glasses and the second device as a UAV.
  • the UAV has 2 antennas, 1 round and 2 rounds at the same time, and the video glasses have 4 antennas, and 1 round and 2 rounds at the same time.
  • Other antenna configurations are similar to the principles of this example.
  • H rt total of eight values may be expressed as a 4x2 matrix.
  • the video glasses can be set to use two RF circuits for receiving two signals. Since the UAV works for 1 round and 2 rounds, the UAV can set one RF circuit for use by one transmitting antenna when transmitting signals.
  • the detection signal can only be transmitted through one transmitting antenna of the UAV, and the detection signal is received by the two receiving antennas of the video glasses to obtain a transmission antenna and two receiving antennas.
  • Two H rt elements corresponding to two channels. In order to obtain the entire matrix H, it is necessary to separately transmit detection signals for detection in a plurality of periods.
  • the process may refer to S310UAV in the schematic flowchart of the method 300 for selecting an antenna shown in FIG. 3 to send a sounding signal to the video glasses, and the S320 video glasses perform channel estimation on each channel according to the sounding signal to determine a channel of each channel. parameter.
  • the data signal can also be used as a probe signal, and the corresponding 2 H rt elements are obtained according to the data signal.
  • the sounding signal for detecting the downlink channel may be additionally transmitted in the other three periods. In this example, the detection of the downlink channel is performed in 4 time periods, and the detection of each time period can obtain 2 H rt elements.
  • the video glasses can continuously detect H rt in each time period, and can perform necessary post-processing on H rt , such as filtering smoothing and the like.
  • determining the working antenna includes determining the transmit antenna of the UAV when the actual operation is performed (2 out of 1) and determining the receiving antenna of the video glasses when actually working (4 out of 2). Specifically, select the best two elements on each column, and then select the two receiver antennas between the two columns to combine the best performance. One column, thus determining one optimal transmit antenna and two optimal receive antennas. In other words, finally, two elements on the same column are selected among the eight elements of the matrix H, so that the received signal quality is the best, that is, the channel capacity is maximized.
  • the process can refer to the S330 video glasses in FIG. 3 to determine the working antenna according to the channel parameters.
  • the video glasses inform the UAV of the number of the selected transmit antenna through the uplink.
  • the video glasses since there are only two transmit antennas of the UAV, and only one transmit antenna is actually used as the working antenna, only one bit is needed to express the selected transmit antenna.
  • two transmit antennas in the UAV are denoted by numbers 0 and 1, respectively, and when the antenna selected as the working antenna is numbered 0, the video glasses can express the selected transmit antenna through a bit "0"; When the working antenna is an antenna numbered 1, the video glasses can express the selected transmitting antenna by one bit "1".
  • the video glasses may use 1 byte to inform the UAV of the selection of the channel, wherein each bit in the byte indicates whether a channel is selected for use in binary, and 8 channels are required for 8 channels. Bit, which is one byte.
  • Video glasses can be notified multiple times for the reliability of the notification.
  • the specific manner and number of times the video glasses notify the UAV transmitting antenna can take many forms as long as the required reliability is achieved. For example, if the target value of the block error ratio (BLER) is 20% and the expected maximum failure probability is 5%, it can be notified only twice.
  • the process can notify the UAV of the antenna used as the working antenna with reference to the S340 video glasses in FIG.
  • the UAV can immediately switch to the determined transmit antenna after receiving the notification of the video glasses, and the video glasses can switch to the determined receive antenna immediately after the first notification is sent.
  • the specific selection result may be, for example, the result shown in FIG. 4.
  • the transmitting antenna in actual operation is the antenna 2 of the UAV
  • the receiving antenna in actual working is the antenna 2 and the antenna 4 of the video glasses.
  • the UAV and video glasses communicate over channel H 22 and channel H 24 . It should be understood that the results shown in FIG. 4 are merely examples, and are not limiting.
  • the following example shows the following line direction, that is, the UAV is the transmitting end and the video glasses are the receiving end. Moreover, the present example is described by taking the receiving end, that is, the video glasses, as an example to determine the working antenna. In other examples, the video glasses may send the channel parameters obtained by performing channel estimation according to the sounding channel to the UAV, and the working antenna is determined by the UAV calculation, and details are not described herein.
  • the video glasses may also send the sounding signals to the UAVs on different channel groups in different time periods, so that the UAV performs channel estimation on each channel according to the sounding signals. Determining channel parameters of each channel and according to the letter The channel parameter determines the working antenna from the antenna of the UAV and the antenna of the video glasses.
  • the method 100 may further include: in different time periods, the first device sends a sounding signal to the second device on different channel groups, so that the second device is configured according to the detection signal.
  • Each channel performs channel estimation, determines channel parameters of each channel, and determines a working antenna from an antenna of the second device and an antenna of the first device according to the channel parameter.
  • the UAV and the video glasses typically communicate via the 2.4 GHz band and/or the 5 GHz band.
  • the second device communicates with the first device through a 2.4 GHz band and/or a 5 GHz band.
  • the communication frequency band of the embodiment of the present invention is not limited to the 2.4 GHz band and the 5 GHz band, and may be other available bands.
  • the video glasses can be based on frequency hopping technology when transmitting data to the UAV.
  • the second device may be based on a frequency hopping technique when transmitting data to the first device.
  • the data sent by the video glasses to the UAV is usually a control signal, such as a somatosensory control signal, a manual control signal, and a status information related signal.
  • the data that the UAV sends to the video glasses is usually image data, or image transfer data.
  • the uplink signal in the embodiment of the present invention is not limited to a frequency hopping signal, and may also be a non-frequency hopping signal.
  • the downlink signal may be a frequency hopping signal or a non-frequency hopping signal.
  • the uplink signal and the downlink signal may be both frequency hopping signals and non-frequency hopping signals at the same time, which is not limited in this embodiment of the present invention.
  • FIG. 5 shows a schematic flow diagram of a method 500 of selecting an antenna in accordance with another embodiment of the present invention.
  • S510 is the same as S310, and S520 is the same as S320.
  • the video glasses in S530 feed back the determined channel parameters to the UAV.
  • S540 Determine, by the UAV, the working antenna according to the channel parameter, and S550, the UAV notifies the video glasses of the antenna used as the working antenna.
  • the specific implementation of the method 500 may be similar to the implementation of the method 300, and details are not described herein again.
  • first device as the video glasses and the second device as the UAV as an example. It should be understood that in other examples, the first device may be a UAV and the second device is a video glasses. Or, the first device and the second device are other devices, which are not limited in this embodiment of the present invention.
  • the second example still uses the first device as the video glasses and the second device as the UAV as an example.
  • the UAV has 4 antennas, 2 rounds and 2 rounds at the same time, and the video glasses have 4 antennas, and 2 rounds and 2 rounds.
  • the video glasses can be set to use two RF circuits for receiving two signals. Since the UAV works with 2 rounds and 2 rounds, the UAV can set 2 RF circuits for use by the 2 transmit antennas when transmitting signals.
  • the detection signal can only be transmitted through the two transmitting antennas of the UAV, and the detection signals are received by the two receiving antennas of the video glasses to obtain the relationship between the two transmitting antennas and the two receiving antennas. 4 H rt elements corresponding to 2 channels. In order to obtain the entire matrix H, it is necessary to separately transmit detection signals for detection in a plurality of periods.
  • the data signal can also be used as a probe signal, and corresponding four H rt elements are obtained according to the data signal.
  • the sounding signal for detecting the downlink channel may be additionally transmitted in the other three periods. In this example, the detection of the downlink channel is performed in 4 time periods, and the detection of each time period can obtain 4 H rt elements.
  • determining the working antenna includes determining the transmitting antenna of the UAV when actually working (4 out of 2) and determining the receiving antenna of the video glasses when actually working (4 out of 2).
  • the joint selection makes the reception performance optimal for two columns and two rows, thereby determining two optimal transmit antennas and two optimal receive antennas.
  • four elements in two rows and two columns are finally selected among the 16 elements of the matrix H, so that the received signal quality is the best, that is, the channel capacity is maximized.
  • the video glasses may consider the non-uniform distribution of the transmission power on the two transmission antennas when determining the channel capacity according to the channel parameters, or when evaluating the reception performance according to the channel parameters. For example, a water injection algorithm is used to maximize the channel capacity of the two transmit and receive antenna combinations.
  • the transmit power of one of the transmit antennas is less than a preset threshold, the antenna can be discarded, and only one transmit antenna is used in actual operation.
  • uniform work can be used Rate allocation, but adaptively select the number of transmit antennas, either single or dual. Specifically, the best antenna combination can be selected first by single shot, then the best antenna combination can be selected according to double shots, and finally selected between the two. This method can further improve the working efficiency of the antenna.
  • determining, by the S130, the working antenna from the antenna of the second device and the antenna of the first device according to the channel parameter may include: the first device selecting a number M according to a target of the transmitting antenna Determining the number of target antennas N of the receiving antenna and the channel parameters, and determining the transmitting power of each of the M transmitting antennas and the M transmitting antennas from the antennas of the second device and the antennas of the first device And N receiving antennas; when M is greater than or equal to 2, and the transmitting power of the MK transmitting antennas in the M transmitting antennas is less than a preset threshold, K transmitting antennas of the M transmitting antennas are used as A transmit antenna in an actual working antenna, where K is less than or equal to M; and the N receive antennas are used as receive antennas in an actual working antenna.
  • M is equal to 2
  • N is equal to 2
  • K is equal to 1.
  • the first device determines, according to a target selection number M of the transmitting antenna, a target selection number N of the receiving antenna, and the channel parameter, from an antenna of the second device and an antenna of the first device.
  • the transmit power of each of the M transmit antennas and the M transmit antennas and the N receive antennas may include: the first device selects the number M according to the target of the transmit antenna, the target selection number N of the receive antenna, and the a channel parameter, determining, by a water injection algorithm, a transmission power of the M transmit antennas, each of the M transmit antennas, and the N from an antenna of the second device and an antenna of the first device Receive antennas.
  • the glasses inform the UAV of the number of the selected transmit antenna through the uplink.
  • a 4-bit bitmap can be used to express the selected transmit antenna. This expression also supports the alternative method of the number of transmit antennas described above.
  • the glasses not only feed back the selected transmit antenna, but also feed back the power ratio of the transmit antenna.
  • the notification can be executed multiple times.
  • the UAV can immediately switch to the new transmitting antenna after receiving the notification, and the glasses can switch to the new receiving antenna immediately after the first notification.
  • the video glasses inform the UAV of the number of the selected transmit antenna through the uplink.
  • a 4-bit bitmap can be used to express the selected transmit antenna. This expression also supports the single and dual-issue alternatives described above.
  • the video glasses When using non-uniform transmit antenna power allocation, the video glasses not only feed back the selected transmit antenna, but also feed back the power ratio of the transmit antenna, or The power fed to each transmit antenna.
  • Video glasses can be notified multiple times for the reliability of the notification.
  • the UAV can immediately switch to the determined transmit antenna after receiving the notification of the video glasses, and the video glasses can switch to the determined receive antenna immediately after the first notification is sent.
  • the antennas on one side of the first device and the second device may be unselected. That is, the selection of the antenna can be performed only on the first device side or only on the second device side. For example, when two transmit antennas are included in the UAV, and two transmit antennas are used at the same time in actual operation, for the downlink direction, the antenna selection only needs to select two receive antennas on the video glasses side as the working antenna, and the video is at this time. The glasses do not need to inform the UAV to switch the transmit antenna.
  • An embodiment of the present invention provides another method for selecting an antenna, including: in different time periods, the video glasses receive detection signals transmitted by the UAV UAV on different channel groups, wherein each channel group The channel is a communication channel between the antenna of the UAV and the antenna of the video glasses; the video glasses perform channel estimation on each channel according to the sounding signal, and determine channel parameters of each channel; The video glasses determine a working antenna from an antenna of the UAV and an antenna of the video glasses according to the channel parameter.
  • the first device in the method 100 is video glasses, and the second device is a UAV.
  • the detection signal is received in a time division manner and the channel parameters are estimated, and the working antenna is selected according to the channel parameters, so that the circuit of the transceiver of the communication device can be simplified, power resources are saved, and communication quality is improved.
  • the sounding signal is sent by the UAV using the same radio frequency circuit.
  • the channel parameter includes at least one of a channel amplitude and a channel phase.
  • the channel parameter further includes a magnitude of noise and/or interference.
  • the video glasses determine a working antenna from an antenna of the UAV and an antenna of the video glasses according to the channel parameter, where the video glasses are: according to the channel parameter, A combination of a transmitting antenna and a receiving antenna as the working antenna is selected from an antenna of the UAV and an antenna of the video glasses such that a selected channel of a communication channel between the transmitting antenna and the receiving antenna in the combination is selected
  • the capacity of the channel relative to the other combinations is the largest.
  • the video glasses perform channel estimation on each channel according to the detection signal, and determine channel parameters of each channel, including: the video glasses.
  • Channel estimation is performed on each channel according to an average value of the plurality of measured probe signals, and channel parameters of each channel are determined.
  • the method further includes: the video glasses send first information to the UAV, where the first information includes information used to indicate a transmit antenna used as a working antenna in the UAV. .
  • the method further includes: the video glasses receive second information sent by the UAV, the second information includes the channel parameter, and the video glasses are configured according to the channel parameters.
  • a transmit antenna for use as a working antenna in the video glasses is determined.
  • the video glasses determine a working antenna from an antenna of the UAV and an antenna of the video glasses according to the channel parameter, including: selecting, according to a target number of the transmitting antenna, the video glasses M. a target selection number N of the receiving antenna and the channel parameter, and determining, by the antenna of the UAV and the antenna of the video glasses, the transmitting power and N of each of the M transmitting antennas and the M transmitting antennas Receive antennas; when M is greater than or equal to 2, and the transmit power of the MK transmit antennas in the M transmit antennas is less than a preset threshold, K transmit antennas of the M transmit antennas are taken as actual A transmitting antenna in the working antenna, wherein K is less than or equal to M; and the N receiving antennas are used as receiving antennas in the actual working antenna.
  • the video glasses are determined from an antenna of the UAV and an antenna of the video glasses according to a target selection number M of the transmitting antenna, a target selection number N of the receiving antenna, and the channel parameter. Transmit power of each of the M transmit antennas, the M transmit antennas, and the N receive antennas, including: the video glasses select a number M according to a target of the transmit antenna, a target selection number N of the receive antenna, and the channel And determining, by a water injection algorithm, a transmission power of the M transmit antennas, each of the M transmit antennas, and the N receive antennas from an antenna of the UAV and an antenna of the video glasses.
  • the method further includes: the video glasses send third information to the UAV, where the third information is used to indicate each transmit antenna used as a working antenna in the UAV. Transmit power.
  • the method further includes: the video glasses receive fourth information sent by the UAV, the fourth information includes the channel parameter, and the video glasses are according to the channel parameter.
  • the transmit power of each of the transmit antennas used as the working antenna in the video glasses is calculated.
  • the method further includes: in different time periods, the video glasses send a sounding signal to the UAV on different channel groups, so that the UAV is based on the sounding signal.
  • Channel estimation is performed for each channel, channel parameters of each channel are determined, and a working antenna is determined from an antenna of the UAV and an antenna of the video glasses according to the channel parameter.
  • the UAV communicates with the video glasses through a 2.4 GHz band and/or a 5 GHz band.
  • the video glasses are based on a frequency hopping technique when transmitting data to the UAV.
  • the data sent by the UAV to the video glasses is image data
  • the data sent by the video glasses to the UAV is a control signal
  • FIG. 6 is a schematic block diagram of a first device 600 in accordance with an embodiment of the present invention. As shown in FIG. 6, the first device 600 includes:
  • the receiving module 610 is configured to receive the sounding signals sent by the second device on different channel groups in different time periods, where each channel in each channel group is an antenna of the second device and the first a communication channel between antennas of a device 600;
  • the channel estimation module 620 is configured to perform channel estimation on each channel according to the detection signal received by the receiving module 610, and determine channel parameters of each channel.
  • the determining module 630 is configured to determine a working antenna from an antenna of the second device and an antenna of the first device 600 according to the channel parameter obtained by the channel estimation module 620.
  • the detection signal is received in a time division manner and the channel parameters are estimated, and the working antenna is selected according to the channel parameters, so that the circuit of the transceiver of the communication device can be simplified, power resources are saved, and communication quality is improved.
  • the sounding signal is sent by the second device by using the same radio frequency circuit.
  • the channel parameter includes at least one of a channel amplitude and a channel phase.
  • the channel parameter further includes a magnitude of noise and/or interference.
  • the determining module 630 is specifically configured to: according to the channel Estimating the channel parameter obtained by the module, selecting a combination of a transmitting antenna and a receiving antenna as the working antenna from an antenna of the second device and an antenna of the first device 600, so that the selected combination is The channel capacity of the communication channel between the transmitting antenna and the receiving antenna is the largest relative to the other combined channel capacity.
  • the channel estimation module 620 is specifically configured to: perform channel estimation on each channel according to an average value of the plurality of measured detection signals, and determine channel parameters of each channel.
  • the first device 600 further includes: a sending module 640, configured to send, to the second device, first information, where the first information is used to indicate the second device Information used as a transmitting antenna for a working antenna.
  • a sending module 640 configured to send, to the second device, first information, where the first information is used to indicate the second device Information used as a transmitting antenna for a working antenna.
  • the receiving module 610 is further configured to: receive second information sent by the second device, where the second information includes the channel parameter, and the determining module 630 is further configured to: The channel parameter received by the receiving module determines a transmitting antenna used as a working antenna in the first device.
  • the determining module 630 is specifically configured to: select, according to a target number of the transmitting antenna, a target selection number N of the receiving antenna, and the channel parameter, from an antenna and a device of the second device. Determining, by the antennas of the first device, the transmit power of each of the M transmit antennas, the M transmit antennas, and the N receive antennas; when M is greater than or equal to 2, and there are MK of the M transmit antennas When the transmit power of the transmit antenna is less than a preset threshold, K transmit antennas of the M transmit antennas are used as transmit antennas in the actual working antenna, where K is less than or equal to M; and the N receive antennas As the receiving antenna in the actual working antenna.
  • the determining module 630 is specifically configured to: select, according to a target number of the transmitting antenna, a target selection number N of the receiving antenna, and the channel parameter, by using a water injection algorithm from the second device. And transmitting, by the antenna and the antenna of the first device, the transmit power of the M transmit antennas, each of the M transmit antennas, and the N receive antennas.
  • the first device 600 further includes: a sending module 640, configured to send, to the second device, third information, where the third information is used to indicate that the second device is used by The transmit power of each transmit antenna of the working antenna.
  • a sending module 640 configured to send, to the second device, third information, where the third information is used to indicate that the second device is used by The transmit power of each transmit antenna of the working antenna.
  • the receiving module 610 is further configured to: receive fourth information sent by the second device, where the fourth information includes the channel parameter; and the determining module 630 further And configured to calculate, according to the channel parameter, a transmit power of each transmit antenna used as a working antenna in the first device.
  • the first device 600 further includes: a sending module 640, configured to send a sounding signal to the second device on different channel groups in different time periods, to facilitate the The second device performs channel estimation on each channel according to the sounding signal, determines channel parameters of each channel, and, according to the channel parameters, an antenna from the second device and an antenna of the first device Determine the working antenna.
  • a sending module 640 configured to send a sounding signal to the second device on different channel groups in different time periods, to facilitate the The second device performs channel estimation on each channel according to the sounding signal, determines channel parameters of each channel, and, according to the channel parameters, an antenna from the second device and an antenna of the first device Determine the working antenna.
  • the second device communicates with the first device 600 through a 2.4 GHz band and/or a 5 GHz band.
  • the first device 600 when the first device 600 sends data to the second device, it is based on a frequency hopping technology.
  • the first device 600 and the second device are respectively one of the following devices: a drone UAV, a wearable device that communicates with the UAV, and a control device for controlling the UAV. .
  • the data sent by the second device to the first device 600 is image data or a control signal.
  • the receiving module 610 may be implemented by a transceiver
  • the channel estimation module 620 and the determining module 630 may be implemented by a processor.
  • the first device 700 can include a processor 710, a memory 720, and a transceiver 730.
  • the memory 720 is configured to store instructions
  • the processor 710 and the transceiver 730 are configured to determine a working antenna according to an instruction stored by the memory 720.
  • the various components in the first device 700 are coupled together by a bus system 740, which in addition to the data bus includes a power bus, a control bus, and a status signal bus.
  • a bus system 740 which in addition to the data bus includes a power bus, a control bus, and a status signal bus.
  • the transceiver 730 is configured to receive, according to different time periods, sounding signals sent by the second device on different channel groups, where each channel in each channel group is an antenna of the second device and the a communication channel between antennas of the first device;
  • the processor 710 is configured to perform channel estimation on each channel according to the sounding signal received by the transceiver 730, and determine channel parameters of each channel.
  • the processor 710 is further configured to determine a working antenna from an antenna of the second device and an antenna of the first device according to the channel parameter.
  • the sounding signal is received in a time division manner and the channel parameters are estimated
  • the number according to the selection of the working antenna according to these channel parameters, can simplify the circuit of the transceiver of the communication device, save power resources, and improve communication quality.
  • the processor may be an integrated circuit chip with signal processing capabilities.
  • each step of the foregoing method embodiment may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software.
  • the processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA), or the like. Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present invention may be implemented or carried out.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method.
  • the memory in the embodiments of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read only memory (PROM), an erasable programmable read only memory (Erasable PROM, EPROM), or an electric Erase programmable read only memory (EEPROM) or flash memory.
  • the volatile memory can be a Random Access Memory (RAM) that acts as an external cache.
  • RAM Random Access Memory
  • many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM).
  • SDRAM Double Data Rate SDRAM
  • DDR SDRAM Double Data Rate SDRAM
  • ESDRAM Enhanced Synchronous Dynamic Random Access Memory
  • SLDRAM Synchronous Connection Dynamic Random Access Memory
  • DR RAM direct memory bus random access memory
  • the sounding signal is sent by the second device by using the same radio frequency circuit.
  • the channel parameter includes at least one of a channel amplitude and a channel phase.
  • the channel parameter further includes a magnitude of noise and/or interference.
  • the processor 710 is specifically configured to: select, according to the channel parameter, an emission from the antenna of the second device and an antenna of the first device as the working antenna.
  • the combination of the antenna and the receiving antenna is such that the channel capacity of the communication channel between the transmitting antenna and the receiving antenna in the selected combination is the largest relative to the other combined channel capacity.
  • the processor 710 is specifically configured to: perform channel estimation on each channel according to an average value of the detected signals that are measured multiple times, and determine channel parameters of each channel.
  • the transceiver 730 is further configured to: send, to the second device, first information, where the first information includes an indication, that is used in the second device, as a working antenna. Antenna information.
  • the transceiver 730 is further configured to: receive second information sent by the second device, where the second information includes the channel parameter; and the processor 710 is further configured to: The channel parameter received by the transceiver determines a transmit antenna used as a working antenna in the first device.
  • the processor 710 is specifically configured to: select, according to a target number of the transmit antenna, a target selection number N of the receiving antenna, and the channel parameter, from an antenna and a device of the second device. Determining, by the antennas of the first device, the transmit power of each of the M transmit antennas, the M transmit antennas, and the N receive antennas; when M is greater than or equal to 2, and there are MK of the M transmit antennas When the transmit power of the transmit antenna is less than a preset threshold, K transmit antennas of the M transmit antennas are used as transmit antennas in the actual working antenna, where K is less than or equal to M; and the N receive antennas As the receiving antenna in the actual working antenna.
  • the processor 710 is specifically configured to: select, according to a target number of the transmit antenna, a target selection number N of the receiving antenna, and the channel parameter, by using a water injection algorithm from the second device. And transmitting, by the antenna and the antenna of the first device, the transmit power of the M transmit antennas, each of the M transmit antennas, and the N receive antennas.
  • the transceiver 730 is further configured to: send the second device Sending third information, the third information is used to indicate the transmit power of each of the transmit antennas used as the working antenna in the second device.
  • the transceiver 730 is further configured to: receive fourth information sent by the second device, where the fourth information includes the channel parameter; and the processor 710 is further configured to: The channel parameter calculates a transmit power of each transmit antenna used as a working antenna in the first device.
  • the transceiver 730 is further configured to send a sounding signal to the second device on different channel groups in different time periods, so that the second device is configured according to the sounding signal. And performing channel estimation on each channel, determining channel parameters of each channel, and determining a working antenna from an antenna of the second device and an antenna of the first device according to the channel parameter.
  • the second device communicates with the first device through a 2.4 GHz band and/or a 5 GHz band.
  • the first device when the first device sends data to the second device, it is based on a frequency hopping technology.
  • the first device and the second device are respectively one of the following devices: a drone UAV, a wearable device that communicates with the UAV, and a control device for controlling the UAV.
  • the data sent by the second device to the first device is image data or a control signal.
  • the first device 600 shown in FIG. 6 or the first device 700 shown in FIG. 7 can implement the various processes implemented in the foregoing embodiments of FIG. 1 to FIG. 5. To avoid repetition, details are not described herein again.
  • FIG. 8 is a schematic block diagram of video glasses 800 in accordance with one embodiment of the present invention. As shown in FIG. 8, the video glasses 800 include:
  • the receiving module 810 is configured to receive the sounding signals sent by the UAV UAV on different channel groups in different time periods, where each channel in each channel group is an antenna of the UAV and the video glasses Communication channel between antennas;
  • the channel estimation module 820 is configured to perform channel estimation on each channel according to the sounding signal received by the receiving module 810, and determine channel parameters of each channel.
  • the determining module 830 is configured to determine a working antenna from an antenna of the UAV and an antenna of the video glasses according to the channel parameter obtained by the channel estimation module 820.
  • the detection signal is received in a time division manner and the channel parameters are estimated, and the working antenna is selected according to the channel parameters, so that the circuit of the transceiver of the communication device can be simplified, power resources are saved, and communication quality is improved.
  • the sounding signal is sent by the UAV using the same radio frequency circuit.
  • the channel parameter includes at least one of a channel amplitude and a channel phase.
  • the channel parameter further includes a magnitude of noise and/or interference.
  • the determining module 830 is specifically configured to: select, according to the channel parameter obtained by the channel estimation module 820, an antenna from the UAV and an antenna of the video glasses as a location
  • the combination of the transmit antenna and the receive antenna of the working antenna is such that the selected channel capacity of the communication channel between the transmit antenna and the receive antenna in the combination is the largest relative to the other combined channel capacity.
  • the channel estimation module 820 is specifically configured to: perform channel estimation on each channel according to an average value of the plurality of measured detection signals, and determine channel parameters of each channel.
  • the video glasses 800 further includes: a sending module 840, configured to send first information to the UAV, where the first information is used to indicate that the UAV is used as a working antenna. Transmitting antenna information.
  • a sending module 840 configured to send first information to the UAV, where the first information is used to indicate that the UAV is used as a working antenna. Transmitting antenna information.
  • the receiving module 810 is further configured to: receive second information that is sent by the UAV, where the second information includes the channel parameter, and the determining module 830 is further configured to: A channel parameter determining a transmit antenna used as a working antenna in the video glasses.
  • the determining module 830 is specifically configured to select, according to a target number of the transmitting antenna, a target selection number N of the receiving antenna, and the channel parameter, from the antenna of the UAV and the video.
  • the transmit power of each of the M transmit antennas and the M transmit antennas and the N receive antennas are determined in the antenna of the glasses; when M is greater than or equal to 2, and MK transmit antennas are present in the M transmit antennas
  • K transmit antennas of the M transmit antennas are used as transmit antennas in the actual working antenna, where K is less than or equal to M; and the N receive antennas are used as actual The receiving antenna in the working antenna.
  • the determining module 830 is specifically configured to: according to a target selection number M of the transmitting antenna, a target selection number N of the receiving antenna, and the channel parameter, calculate by water injection And determining, by the antenna of the UAV and the antenna of the video glasses, a transmit power of the M transmit antennas, each of the M transmit antennas, and the N receive antennas.
  • the video glasses 800 further includes: a sending module 840, configured to send, to the UAV, third information, where the third information is used to indicate that each of the UAVs is used as a working antenna.
  • the transmit power of the root transmit antenna is not limited to: a sending module 840, configured to send, to the UAV, third information, where the third information is used to indicate that each of the UAVs is used as a working antenna. The transmit power of the root transmit antenna.
  • the receiving module 810 is further configured to: receive fourth information sent by the UAV, where the fourth information includes the channel parameter, and the determining module 830 is further configured to: Channel parameters, calculating the transmit power of each of the transmit antennas used as working antennas in the video glasses.
  • the video glasses 800 further includes: a sending module 840, configured to send a sounding signal to the UAV on different channel groups in different time periods, so that the UAV is detected according to the detection. Signaling, performing channel estimation on each channel, determining channel parameters of each channel, and determining a working antenna from an antenna of the UAV and an antenna of the video glasses according to the channel parameter.
  • a sending module 840 configured to send a sounding signal to the UAV on different channel groups in different time periods, so that the UAV is detected according to the detection. Signaling, performing channel estimation on each channel, determining channel parameters of each channel, and determining a working antenna from an antenna of the UAV and an antenna of the video glasses according to the channel parameter.
  • the UAV communicates with the video glasses through a 2.4 GHz band and/or a 5 GHz band.
  • the video glasses are based on a frequency hopping technique when transmitting data to the UAV.
  • the data sent by the UAV to the video glasses is image data
  • the data sent by the video glasses to the UAV is a control signal
  • the receiving module 810 can be implemented by a transceiver
  • the channel estimation module 820 and the determining module 830 can be implemented by a processor.
  • video glasses 900 can include a processor 910, a memory 920, and a transceiver 930.
  • the memory 920 is configured to store instructions
  • the processor 910 and the transceiver 930 are configured to determine a working antenna according to an instruction stored by the memory 920.
  • the various components in video glasses 900 are coupled together by a bus system 940, which in addition to the data bus includes a power bus, a control bus, and a status signal bus.
  • a bus system 940 which in addition to the data bus includes a power bus, a control bus, and a status signal bus.
  • the transceiver 930 is configured to receive sounding signals transmitted by the UAV UAV on different channel groups in different time periods, wherein each channel in each channel group is an antenna of the UAV and the video a communication channel between the antennas of the glasses;
  • the processor 910 is configured to perform, according to the detection signal received by the transceiver 930, the Channel estimation is performed for each channel, and channel parameters of each channel are determined;
  • the processor 910 is further configured to determine a working antenna from an antenna of the UAV and an antenna of the video glasses according to the channel parameter.
  • the detection signal is received in a time division manner and the channel parameters are estimated, and the working antenna is selected according to the channel parameters, so that the circuit of the transceiver of the communication device can be simplified, power resources are saved, and communication quality is improved.
  • the sounding signal is sent by the UAV using the same radio frequency circuit.
  • the channel parameter includes at least one of a channel amplitude and a channel phase.
  • the channel parameter further includes a magnitude of noise and/or interference.
  • the processor 910 is specifically configured to: select, according to the channel parameter, a transmit antenna and a receive antenna as the working antenna from an antenna of the UAV and an antenna of the video glasses.
  • the combination of the antennas maximizes the channel capacity of the communication channel between the transmit and receive antennas in the selected combination relative to the other combined channel capacities.
  • the processor 910 is specifically configured to: perform channel estimation on each channel according to an average value of the detected signals that are measured multiple times, and determine channel parameters of each channel.
  • the transceiver 930 is further configured to: send, to the UAV, first information, where the first information includes information used to indicate a transmit antenna used as a working antenna in the UAV.
  • the transceiver 930 is further configured to: receive second information sent by the UAV, where the second information includes the channel parameter, and the processor 910 is further configured to: The channel parameters received by the transceiver determine a transmit antenna for use as a working antenna in the video glasses.
  • the processor 910 is specifically configured to select, according to a target number of the transmitting antenna, a target selection number N of the receiving antenna, and the channel parameter, from the antenna of the UAV and the video.
  • the transmit power of each of the M transmit antennas and the M transmit antennas and the N receive antennas are determined in the antenna of the glasses; when M is greater than or equal to 2, and MK transmit antennas are present in the M transmit antennas
  • K transmit antennas of the M transmit antennas are used as transmit antennas in the actual working antenna, where K is small Or equal to M; the N receiving antennas are used as receiving antennas in the actual working antennas.
  • the processor 910 is specifically configured to select, according to a target selection number M of the transmitting antenna, a target selection number N of the receiving antenna, and the channel parameter, by using a water injection algorithm from the antenna of the UAV and
  • the M transmit antennas, the transmit power of each of the M transmit antennas, and the N receive antennas are determined in an antenna of the video glasses.
  • the transceiver 930 is further configured to: send, to the UAV, third information, where the third information is used to indicate transmission of each transmit antenna used as a working antenna in the UAV. power.
  • the transceiver 930 is further configured to: receive fourth information sent by the UAV, where the fourth information includes the channel parameter, and the processor 910 is further configured to: Channel parameters, calculating the transmit power of each of the transmit antennas used as working antennas in the video glasses.
  • the transceiver 930 is further configured to send a sounding signal to the UAV on different channel groups in different time periods, so that the UAV is configured according to the sounding signal.
  • Channel estimation is performed for each channel, channel parameters of each channel are determined, and a working antenna is determined from an antenna of the UAV and an antenna of the video glasses according to the channel parameter.
  • the UAV communicates with the video glasses through a 2.4 GHz band and/or a 5 GHz band.
  • the video glasses are based on a frequency hopping technique when transmitting data to the UAV.
  • the data sent by the UAV to the video glasses is image data
  • the data sent by the video glasses to the UAV is a control signal
  • the video glasses 800 shown in FIG. 8 or the video glasses 900 shown in FIG. 9 can implement the various processes implemented in the foregoing embodiments of FIG. 1 to FIG. 5. To avoid repetition, details are not described herein again.
  • the size of the sequence numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be The implementation process of the embodiments of the present invention constitutes any limitation.
  • B corresponding to A means that B is associated with A, and B can be determined according to A.
  • determining B from A does not mean that B is only determined based on A, and that B can also be determined based on A and/or other information.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Quality & Reliability (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé de sélection d'antenne, un appareil et des lunettes vidéo. Le procédé comprend les étapes suivantes : un premier dispositif reçoit un signal de détection envoyé par un second dispositif sur différents groupes de canaux dans différentes périodes de temps, chaque canal dans chaque groupe de canaux étant un canal de communication entre une antenne du second dispositif et une antenne du premier dispositif ; le premier dispositif effectue une estimation de canal pour chaque canal en fonction du signal de détection, et détermine des paramètres de canal de chaque canal ; et le premier dispositif détermine une antenne opérationnelle à partir de l'antenne du deuxième dispositif et de l'antenne du premier dispositif en fonction des paramètres de canal. La réception d'un signal de détection et l'estimation de paramètres de canal par répartition dans le temps, ainsi que la sélection d'une antenne opérationnelle selon lesdits paramètres de canal, permettent de simplifier un circuit d'un émetteur-récepteur d'un dispositif de communication, d'économiser de l'énergie et des ressources, et d'améliorer la qualité de communication.
PCT/CN2016/100213 2016-09-26 2016-09-26 Procédé de sélection d'antenne, appareil et lunettes vidéo WO2018053876A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2016/100213 WO2018053876A1 (fr) 2016-09-26 2016-09-26 Procédé de sélection d'antenne, appareil et lunettes vidéo
CN201680009185.XA CN107454997B (zh) 2016-09-26 2016-09-26 选择天线的方法、设备和视频眼镜

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/100213 WO2018053876A1 (fr) 2016-09-26 2016-09-26 Procédé de sélection d'antenne, appareil et lunettes vidéo

Publications (1)

Publication Number Publication Date
WO2018053876A1 true WO2018053876A1 (fr) 2018-03-29

Family

ID=60486142

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/100213 WO2018053876A1 (fr) 2016-09-26 2016-09-26 Procédé de sélection d'antenne, appareil et lunettes vidéo

Country Status (2)

Country Link
CN (1) CN107454997B (fr)
WO (1) WO2018053876A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110401473B (zh) * 2019-07-23 2022-06-03 努比亚技术有限公司 动态调整发射功率的方法、移动终端及存储介质
CN110581712B (zh) * 2019-08-29 2021-06-08 维沃移动通信有限公司 天线确定方法及终端设备
CN112511205B (zh) * 2019-09-16 2022-07-15 Oppo广东移动通信有限公司 信号处理方法、发射器、接收器和计算机可读存储介质
CN110719125B (zh) * 2019-12-12 2020-04-07 南京邮电大学 一种面向无人机频谱共享系统的多天线传输方法
WO2021217336A1 (fr) * 2020-04-27 2021-11-04 深圳市大疆创新科技有限公司 Procédé de commutation d'antenne pour un engin volant sans pilote embarqué, terminal de commande et engin volant sans pilote embarqué
CN111669208B (zh) * 2020-05-29 2023-04-07 北京小米移动软件有限公司 天线选择方法及第一电子设备、存储介质
CN113852924A (zh) * 2020-06-28 2021-12-28 中兴通讯股份有限公司 天线确定方法、装置、终端、电子设备及存储介质
CN215601289U (zh) * 2021-02-09 2022-01-21 杭州海康威视数字技术股份有限公司 无线通信设备
WO2022183324A1 (fr) * 2021-03-01 2022-09-09 深圳市大疆创新科技有限公司 Procédé et appareil pour déterminer un mode d'envoi d'informations d'un appareil de transmission sans fil, et dispositif
CN113556189B (zh) * 2021-06-24 2022-09-16 中国联合网络通信集团有限公司 无人机的天线调整方法和装置
CN114745715B (zh) * 2022-05-13 2024-02-06 中国电信股份有限公司 基于通信系统的密钥生成方法、装置、系统、设备及介质

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101257337A (zh) * 2008-01-24 2008-09-03 上海交通大学 用于发射接收天线联合选择的方法和装置
US20100232533A1 (en) * 2008-08-25 2010-09-16 Lee Daniel Chonghwan Methods of Selecting Signal Transmitting, Receiving, and/or Sensing Devices with Probabilistic Evolutionary Algorithms in Information Conveyance Systems
CN102208934A (zh) * 2011-06-24 2011-10-05 北京理工大学 一种基于全交叉权重遗传算法的天线选择方法
CN103138817A (zh) * 2011-12-05 2013-06-05 上海贝尔股份有限公司 一种用于选择上行链路传输天线的方法与设备
CN104702323A (zh) * 2015-02-25 2015-06-10 广西师范大学 基于遗传算法的天线选择方法
CN104836605A (zh) * 2015-03-31 2015-08-12 华侨大学 一种基于空间复用的新型收发天线联合选择方法
CN105556410A (zh) * 2014-12-31 2016-05-04 深圳市大疆创新科技有限公司 移动物体及其天线自动对准方法、系统

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9886812B2 (en) * 2013-08-09 2018-02-06 Lg Electronics Inc. Antenna combining for massive MIMO scheme

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101257337A (zh) * 2008-01-24 2008-09-03 上海交通大学 用于发射接收天线联合选择的方法和装置
US20100232533A1 (en) * 2008-08-25 2010-09-16 Lee Daniel Chonghwan Methods of Selecting Signal Transmitting, Receiving, and/or Sensing Devices with Probabilistic Evolutionary Algorithms in Information Conveyance Systems
CN102208934A (zh) * 2011-06-24 2011-10-05 北京理工大学 一种基于全交叉权重遗传算法的天线选择方法
CN103138817A (zh) * 2011-12-05 2013-06-05 上海贝尔股份有限公司 一种用于选择上行链路传输天线的方法与设备
CN105556410A (zh) * 2014-12-31 2016-05-04 深圳市大疆创新科技有限公司 移动物体及其天线自动对准方法、系统
CN104702323A (zh) * 2015-02-25 2015-06-10 广西师范大学 基于遗传算法的天线选择方法
CN104836605A (zh) * 2015-03-31 2015-08-12 华侨大学 一种基于空间复用的新型收发天线联合选择方法

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
LU , HOANGYANG ET AL.: "Joint Transmit/Receive Antenna Selection in MIMO Systems Based on the Priority-Based Genetic Algorithm", IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, vol. 6, 17 December 2007 (2007-12-17), pages 588 - 591, XP011196533, ISSN: 1548-5757, Retrieved from the Internet <URL:DOI:10.1109/LAWP.2007.911387> *
TURBO-BLAST, vol. 33, no. 4, 31 August 2009 (2009-08-31), pages 455 - 458 *

Also Published As

Publication number Publication date
CN107454997A (zh) 2017-12-08
CN107454997B (zh) 2021-02-12

Similar Documents

Publication Publication Date Title
WO2018053876A1 (fr) Procédé de sélection d&#39;antenne, appareil et lunettes vidéo
US20230262506A1 (en) Beam reporting method, beam information determining method, and related device
KR102321994B1 (ko) 무선 통신 시스템에서 무선 링크를 관리하기 위한 장치 및 방법
US10893566B2 (en) Method for receiving beam recovery request and network device
US10340984B2 (en) Simultaneous information and power transfer
US10680927B2 (en) Adaptive beam assessment to predict available link bandwidth
US20200229175A1 (en) Information transmission method, terminal device, and network device
US11398856B2 (en) Beamforming techniques to choose transceivers in a wireless mesh network
CN114337953B (zh) 上行信道参数的确定和配置方法及装置
CN105812046B (zh) 一种卫星移动通信系统心跳消息的实现系统及方法
WO2019023902A1 (fr) Procédé et dispositif de commande de mode de communication
CN114070370A (zh) 波束训练方法、装置、终端设备及网络设备
CN111512582A (zh) 用于上行数据传输的方法和终端设备
US20230239032A1 (en) Beam processing method and apparatus, and related device
US11785558B2 (en) Power headroom report method and apparatus, and computer storage medium
CN104871610B (zh) 一种控制发射功率的方法及装置
KR102062432B1 (ko) 무선 에너지 하베스팅 네트워크 시스템을 위한 베이스 스테이션 및 방법, 그리고 이를 포함하는 시스템
CN114390581A (zh) 信道状态信息的报告方法、装置及终端
CN111869123B (zh) 用于高效波束管理的通信设备
US20220294499A1 (en) Information feedback method and device, information receiving method and device, and storage medium
KR102581310B1 (ko) 무선 통신 시스템에서 접속 네트워크를 선택하는 방법 및 장치
CN115668792A (zh) Ue自适应波束管理方法及装置
CN114765798A (zh) 信道信息发送方法、信道信息接收方法及相关设备
CN110278015A (zh) 一种天线选择方法、装置及终端
US10292172B2 (en) Method and apparatus for transmitting packet in system performing D2D direct communication

Legal Events

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

Ref document number: 16916615

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16916615

Country of ref document: EP

Kind code of ref document: A1