CN111817007B - Antenna control method and communication system control method - Google Patents
Antenna control method and communication system control method Download PDFInfo
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- CN111817007B CN111817007B CN201910749558.2A CN201910749558A CN111817007B CN 111817007 B CN111817007 B CN 111817007B CN 201910749558 A CN201910749558 A CN 201910749558A CN 111817007 B CN111817007 B CN 111817007B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/29—Combinations of different interacting antenna units for giving a desired directional characteristic
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- 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
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
- H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
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- 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
- H04B7/088—Hybrid systems, i.e. switching and combining using beam selection
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Abstract
The invention discloses an antenna control method, which comprises the steps of respectively obtaining a plurality of radio frequency signal parameters in a plurality of measuring beam directions, generating a plurality of parameter combinations according to the plurality of radio frequency signal parameters, selecting a target beam direction from the plurality of measuring beam directions according to the plurality of parameter combinations, and controlling an antenna to transmit and receive signals in the target beam direction. Wherein two adjacent measurement beam directions of the plurality of measurement beam directions are separated from each other by an angle difference, and each parameter combination includes a plurality of the plurality of radio frequency signal parameters. The invention also discloses a communication system control method.
Description
Technical Field
The present invention relates to an antenna control method, and more particularly, to a method for controlling a signal receiving and transmitting direction of an antenna.
Background
Nowadays, wireless communication technology is vigorous and is inseparable from modern life. For wireless communication technology, an antenna is a key component for transmitting or receiving radio waves. In free space, any antenna radiates energy in all directions, but has a larger directivity in a certain direction, i.e. has better signal transceiving efficiency, and the direction is also called as an optimal beam direction.
Therefore, how to obtain the optimal beam direction of a communication system composed of an antenna device or a plurality of antenna devices to maximize the antenna gain is an important issue in the wireless communication field at present.
Disclosure of Invention
In view of the foregoing, the present invention provides an antenna control method and a communication system control method.
An embodiment of an antenna control method of the present invention includes obtaining a plurality of rf signal parameters in a plurality of measurement beam directions, respectively, generating a plurality of parameter combinations according to the plurality of rf signal parameters, selecting a target beam direction from the plurality of measurement beam directions according to the plurality of parameter combinations, and controlling an antenna to transmit and receive signals in the target beam direction. Wherein two adjacent measurement beam directions of the plurality of measurement beam directions are separated from each other by an angle difference, and each parameter combination includes a plurality of the plurality of radio frequency signal parameters.
The communication system control method of an embodiment of the invention is suitable for a communication system comprising a first antenna device and a second antenna device. The method includes controlling a second antenna device to operate in an omni-directional mode and controlling a first antenna device to perform a target beam direction determination procedure to determine a first target beam direction, controlling the first antenna device to operate in the first target beam direction and controlling the second antenna device to perform the target beam direction determination procedure to determine a second target beam direction, and controlling the second antenna device to operate in the second target beam direction.
With the above structure, the antenna control method disclosed by the invention takes the radio frequency signal parameters related to the antenna pattern as the basis for selecting the target beam direction, and does not relate to the hardware structure specification of a platform for generating a feed-in signal or performing operation on a received signal, thereby having high adaptability. The antenna control method disclosed by the invention can reduce the influence of measurement noise and further improve the accuracy of selecting the target beam direction by using a plurality of radio frequency signal parameters as the basis of the signal transceiving efficiency in each direction to determine the target beam direction, namely, the determined target beam direction is closer to the direction with the optimal signal transceiving efficiency. In addition, the communication system control method disclosed by the invention reduces the number of the paired direction combinations by controlling the two mutually connected antenna devices to execute the target beam direction determination process in turn, thereby reducing the operation time and improving the execution efficiency.
The above description of the present invention and the following description of the embodiments are provided to illustrate and explain the spirit and principles of the present invention and to provide further explanation of the invention as claimed in the appended claims.
Drawings
Fig. 1 is a functional block diagram of an antenna apparatus to which an antenna control method according to various embodiments of the present invention is applied.
Fig. 2 is a flowchart of an antenna control method according to an embodiment of the invention.
FIG. 3 is a diagram illustrating measured data of RF signal parameters according to an embodiment of the present invention.
FIG. 4 is a diagram illustrating normalized data of RF signal parameters according to an embodiment of the present invention.
Fig. 5 is a flowchart illustrating a target beam direction determining step in an antenna control method according to an embodiment of the present invention.
Fig. 6 is a flowchart illustrating a target beam direction determining step in an antenna control method according to another embodiment of the present invention.
Fig. 7 is a flowchart illustrating a target beam direction determining step in an antenna control method according to another embodiment of the present invention.
Fig. 8 shows an embodiment of obtaining the efficiency score in the target beam direction determining step in the antenna control method.
Fig. 9 is a functional block diagram of a communication system to which a method for controlling the communication system according to various embodiments of the present invention is applied.
Fig. 10 is a flowchart illustrating a method for controlling a communication system according to an embodiment of the invention.
Fig. 11 is a flowchart illustrating a method for controlling a communication system according to another embodiment of the present invention.
Wherein, the reference numbers:
1 antenna device
11 antenna part
13 Process controller
rssi0～rssi7Radio frequency signal parameters
2 communication system
22 first antenna device
24 second antenna device
222. 242 antenna unit
224. 244 processing controller
Detailed Description
The detailed features and advantages of the present invention are described in detail in the embodiments below, which are sufficient for anyone skilled in the art to understand the technical contents of the present invention and to implement the present invention, and the related objects and advantages of the present invention can be easily understood by anyone skilled in the art according to the disclosure of the present specification, the protection scope of the claims and the attached drawings. The following examples further illustrate aspects of the present invention in detail, but are not intended to limit the scope of the invention in any way.
The invention provides an antenna control method for selecting and controlling the direction of transmitting and receiving signals of an antenna according to parameters related to an antenna field pattern. Referring to fig. 1 and fig. 2, fig. 1 is a functional block diagram of an antenna apparatus to which an antenna control method according to embodiments of the present invention is applied, and fig. 2 is a flowchart of the antenna control method according to an embodiment of the present invention. As shown in fig. 1, the antenna device 1 includes an antenna unit 11 and a process controller 13. The antenna unit 11 serves as a medium for transmitting and receiving radio frequency signals. The processing controller 13 is used for generating or processing a signal to be fed to the antenna part 11, or receiving an external signal through the antenna part 11, and may control a direction in which the antenna part 11 transmits and receives the signal. The processing controller 13 may be a central processing unit, a microcontroller, a programmable logic controller, etc., and the present invention is not limited thereto.
In an embodiment, the antenna portion 11 of the antenna apparatus 1 may include a signal transceiver, such as a monopole, a dipole, a loop, a spiral, or other types, which is not limited by the invention. In this embodiment, the processing controller 13 may control the signal transceiver to rotate to transmit and receive signals in various directions. In another embodiment, the antenna device 1 may be a Smart antenna (Smart antenna), and the antenna portion 11 includes a plurality of signal transceivers, each having a different signal transceiving direction. The process controller 13 may transmit and receive signals in various directions by enabling one or more signal transceivers.
The antenna control method shown in fig. 2 may be executed by the processing controller 13 of the antenna apparatus 1 to control the antenna portion 11 to perform transmission and reception of signals in a target beam direction. In step S1, the process controller 13 obtains a plurality of rf signal parameters respectively from a plurality of measurement beam directions, wherein two adjacent measurement beam directions of the plurality of measurement beam directions are separated by an angle difference. In step S3, the process controller 13 may generate a plurality of parameter combinations according to the acquired rf signal parameters, wherein each parameter combination includes a plurality of the acquired rf signal parameters. In step S5, the process controller 13 selects one of the measurement beam directions as a target beam direction according to the parameter combinations. In step S7, the processing controller 13 controls the antenna part 11 to transmit and receive signals in the target beam direction.
Further describing the execution manner of the process controller 13 obtaining the rf signal parameter in step S1 of fig. 2, please refer to fig. 1-4 together, wherein fig. 3 is a schematic diagram of measured data of the rf signal parameter according to an embodiment of the present invention, and fig. 4 is a schematic diagram of normalized data of the rf signal parameter according to an embodiment of the present invention. In the embodiments shown in fig. 3 and 4, the rf signal parameter is associated with a Received Signal Strength (RSSI) value. It is specifically noted that the following embodiments will further describe the implementation of the antenna control method by taking the strength of the wireless received signal as the rf signal parameter, but the rf signal parameter may be other parameters related to the antenna pattern, such as data rate (data rate). By selecting the rf signal parameters associated with the antenna pattern as the basis for determining the target beam direction, the antenna control method of the present invention does not involve the hardware architecture specification of the platform that generates the feed signal or performs the operation on the received signal. In other words, when the rear end platform of the antenna is replaced or updated, the antenna control method of the present invention can be highly adaptable without redesigning to fit the replaced or updated specifications.
In step S1 of fig. 2, the processing controller 13 may control the antenna unit 11 to receive the wireless signals in a plurality of directions respectively, so as to measure the wireless received signal strength corresponding to each direction, wherein the measured wireless received signal strengths may form a field pattern as shown in fig. 3 together. Then, as shown in fig. 4, the processing controller 13 can calculate the corresponding average rssi for several measurement beam directions (including directions with azimuth angles of 0, 45 … … 270 and 315 degrees) respectively as the rssi parameter rssi0、rssi1……rssi6And rssi7. In this embodiment, any two of the measurement beam directions from which the rf signal parameters are obtained are separated from each other by an angular difference of 45 degrees. In another embodiment, the angular difference between adjacent measurement beam directions may be various, for example, the processing controller 13 may also obtain corresponding rf signal parameters for measurement beam directions having azimuth angles of 0, 30, 90, 135, 270 and 300 degrees.
Referring to fig. 1, fig. 2, fig. 4 and fig. 5 together, please further describe steps S3 and S5 of fig. 2, wherein fig. 5 is a flowchart of a target beam direction determining step in an antenna control method according to an embodiment of the invention. In step S3, the process controller 13 processes the rf signal parameter rssi according to0～rssi7Generating a plurality of parameter combinations, wherein each parameter combination comprises a radio frequency signal parameter rssi0～rssi7Of the above. In this embodiment, the rf signal parameters in each parameter set include an odd number of forward decision parameters, and the measurement beam directions corresponding to the forward decision parameters include a central direction and a plurality of remaining directions symmetrically arranged with the central direction as an axis.
For example, the parameter combinations generated by the process controller 13 may each include three rf signal parameters as the forward decision parameters. In detail, the parameter set generated by the controller 13 is processedOne including the radio frequency signal parameter rssi0、rssi1And rssi2As the forward determination parameters, the three forward determination parameters respectively correspond to the measurement beam directions having azimuth angles of 0, 45 and 90 degrees, wherein the measurement beam direction having an azimuth angle of 45 degrees is the central direction, and the measurement beam directions having azimuth angles of 0 and 90 degrees are the remaining directions symmetrically arranged with the central direction as the axis. Another one of the parameter combinations generated by the process controller 13 comprises an RF signal parameter rssi1、rssi2And rssi3The measurement beam directions with azimuth angles of 45 degrees, 90 degrees and 135 degrees respectively correspond to the measurement beam directions with azimuth angles of 90 degrees as the central direction, and the measurement beam directions with azimuth angles of 45 degrees and 135 degrees as the remaining directions symmetrically arranged with the central direction as the axis. By analogy, other parameter combinations generated by the process controller 13 may have corresponding center directions of azimuth 135, 180, 225, 270, 315 and 0 degrees, respectively.
As another example, the parameter set may comprise five RF signal parameters rssi0、rssi1、rssi2、rssi3And rssi4As the forward determination parameters, the five forward determination parameters respectively correspond to the measurement beam directions having azimuth angles of 0, 45, 90, 135 and 180 degrees, wherein the measurement beam direction having an azimuth angle of 90 degrees is the central direction, and the measurement beam directions having azimuth angles of 0, 45, 135 and 180 degrees are the remaining directions symmetrically arranged with the central direction as the axis. In both of the above examples, any two adjacent directions of the center direction and the remaining directions are spaced apart from each other by the same angular difference. In other examples, the angular difference between adjacent ones of the center direction and the remaining directions may be varied. For example, two adjacent directions in the directions corresponding to the radio frequency signal parameters in the parameter combination have an angle difference of 45 degrees, and the other two adjacent directions have an angle difference of 90 degrees, which is not limited in the present invention.
In particular, the number of forward decision parameters in the parameter combinations may depend on the transmission/reception beam width (angular range) of the antenna unit 11. Specifically, the processing controller 13 may make the angle range covered by the direction corresponding to the forward determination parameter equal to the transmission/reception beam width of the antenna unit 11. Assuming that the transmit/receive beam width of the antenna portion 11 of the antenna apparatus 1 is 135 degrees, and there are 9 operation modes of the antenna apparatus 1, including an omni-Directional mode (omni-Directional mode) and 8 Directional modes (Directional modes), where the 8 Directional modes refer to modes respectively operating toward 8 measurement beam directions, and any two adjacent measurement beam directions in the measurement beam directions are separated from each other by 45 degrees (i.e. equally divided by 360 degrees), the processing controller 13 determines that each parameter combination includes three forward determination parameters corresponding to any three continuous measurement beam directions.
Next, in step S5, the process controller 13 selects a target beam direction from the measured beam directions according to each parameter combination including an odd number of forward decision parameters. In this embodiment, step S5 of fig. 2 may include steps S11 and S13 of fig. 5. In step S11, the process controller 13 adds the forward decision parameters of each parameter combination. Algebraically, the process controller 13 performs the following equations:
where N is the number of all measurement beam directions, i ranges from 0 to N-1, and W is the function floor (BW/2T), where BW is the beam width and T is the angle difference between adjacent measurement beam directions.
After calculating the sum of the forward decision parameters in each parameter combination, in step S13, the processing controller 13 selects the center direction corresponding to the parameter combination with the largest sum as the target beam direction. Taking the data shown in FIG. 4 and the beam width of 135 degrees as an example, the number of measured beam directions is 8, the processing controller 13 will determine the RF signal parameter rssi7、rssi0And rssi1The sum is greater than the sum of the RF signal parameters in the other parameter combinations, and thus the measurement beam direction with azimuth angle 0 degree is selected as the target beam direction.
The antenna control method takes a plurality of radio frequency signal parameters for each measuring beam direction, takes the sum of the radio frequency signal parameters as a comparison parameter, and compares the comparison parameter of each measuring beam direction to determine the largest one as the target beam direction. Compared with the implementation method that only the single radio frequency signal parameter corresponding to each direction is taken for comparison, the implementation method that the multiple radio frequency signal parameters are taken as the comparison parameters reduces the influence of the measured noise, and further improves the accuracy of the target beam direction selection; meaning that the determination of the target beam direction may be closer to the direction having the best signal transceiving efficiency to maximize the antenna gain.
In addition to determining the target beam direction according to the sum of the forward determination parameters in each parameter combination, the processing controller 13 may also perform another target beam direction determination process. Please refer to fig. 1, fig. 2, fig. 4 and fig. 6 together, wherein fig. 6 is a flowchart illustrating a target beam direction determining step in an antenna control method according to another embodiment of the present invention. In this embodiment, the rf signal parameters in each of the parameter combinations generated by the process controller 13 in step S3 of fig. 2 at least include a forward decision parameter and a backward decision parameter. Wherein, an angle of 180 degrees is included between the measuring beam direction corresponding to the forward determining parameter and the measuring beam direction corresponding to the backward determining parameter.
For example, if the RF signal parameter rssi is used by the process controller 130As a forward decision parameter in a parameter set, the RF signal parameter rssi is used4As a back-decision parameter in this combination of parameters; if the radio frequency signal parameter rssi is used1As a forward decision parameter in another parameter combination, the RF signal parameter rssi is used5As a back-decision parameter in this combination of parameters; in analogy thereto, the process controller 13 may additionally generate the respective rssi parameter2～rssi7As a combination of parameters for forward decision parameters.
Next, in step S5, the process controller 13 selects a target beam direction from the measurement beam directions according to each parameter combination including forward and backward decision parameters. In this embodiment, step S5 of fig. 2 may include steps S31 and S33 of fig. 6.In step S31, the process controller 13 assumes that the forward decision parameters are all the rssi parameters for each combination of parameters0～rssi7And its back-determined parameter is all the RF signal parameters rssi0～rssi7And by the radio frequency signal parameter rssi0～rssi7A voting algorithm (voting algorithm) is performed to determine whether the above assumption holds. Further, the above assumptions are based on the back-recessed nature of certain antenna patterns. The back-recess characteristic means that the back-side range of the range in which a large value is distributed in the antenna field pattern, particularly the back-side of the maximum value, has a recess pattern (null point). Taking fig. 4 as an example, in the pattern diagram formed by the rf signal parameters of the antenna portion 11, the direction having the maximum value is the direction having the azimuth angle of 0 degrees, and a recess is formed in the back (i.e. the direction having the azimuth angle of 180 degrees).
During the voting algorithm, the processing controller 13 determines whether the rf signal parameters other than the forward and backward decision parameters are greater than the backward decision parameter and less than the forward decision parameter respectively. If the judgment result is yes, adding 1 to the number of established tickets; if the judgment result is no, the number of established tickets is unchanged. Algebraically, the process controller 13 defines the rssi(i+N/2)％N＜rssij＜rssiiThen, aggregate(i,j)Is defined as equal to 1; if rssijIf not, the agree is determined(i,j)Defined as 0, and the process controller 13 performs the following voting algorithm:
where N refers to the number of measured beam directions and j is not equal to i and not equal to (i + N/2)% N.
After the established votes corresponding to each parameter combination are calculated, in step S33, the processing controller 13 selects the measurement beam direction corresponding to the forward decision parameter in the parameter combination with the highest established votes in the result of the voting algorithm as the target beam direction. To be provided withFor example, the data shown in FIG. 4 may be obtained by the processing controller 13 using the voting algorithm described above and using the RF signal parameter rssi0The highest vote count is used as the parameter set for the forward decision parameter, so the measurement beam direction with azimuth 0 degrees is selected as the target beam direction.
In addition, the parameter combination may also include a plurality of pairs of forward and backward decision parameters. The directions corresponding to the forward determining parameters comprise a first central direction and other directions which are symmetrically arranged by taking the first central direction as an axis, and the directions corresponding to the backward determining parameters comprise a second central direction and other directions which are symmetrically arranged by taking the second central direction as an axis, wherein an angle of 180 degrees is formed between the first central direction and the second central direction. In this example, the processing controller 13 performs a voting algorithm on each pair of forward and backward decision parameters in the parameter set, and adds the number of votes that are true for each pair to form the total number of votes that are true for the parameter set. The processing controller 13 obtains and compares the total number of established tickets of each parameter combination in the above manner, and selects the first center direction corresponding to the parameter combination having the highest total number of established tickets as the target beam direction.
The antenna control method adopts the direction and the back radio frequency signal parameter of each measuring beam direction, uses the back concave characteristic of the antenna field type to make hypothesis and execute voting algorithm, and compares the voting calculation result of each measuring beam direction to determine the target beam direction which obtains the most hypothesis and established votes. Compared with the implementation method that only the single radio frequency signal parameter corresponding to each direction is taken for comparison, the implementation method that the multiple radio frequency signal parameters are taken as the comparison parameters reduces the influence of the measured noise, and further improves the accuracy of the target beam direction selection; that is, the determination of the target beam direction may be closer to the direction having the best signal transceiving efficiency, so as to maximize the antenna gain.
The above describes the target beam direction determination process performed according to the sum of the forward decision parameters in each parameter combination and the target beam direction determination process performed by using the voting algorithm, but in another embodiment, the processing controller 13 may also combine the above two processes. Referring to fig. 1, fig. 2 and fig. 7 together, wherein fig. 7 is a flowchart illustrating a target beam direction determining step in an antenna control method according to another embodiment of the present invention.
In this embodiment, the rf signal parameters in each of the parameter combinations generated by the process controller 13 in step S3 of fig. 2 at least include an odd number of forward decision parameters and a backward decision parameter. The measurement beam directions corresponding to the forward decision parameters include a central direction and a plurality of remaining directions symmetrically arranged with the central direction as an axis, similar to the forward decision parameters of the embodiment of fig. 5, and the relationship between the forward decision parameter corresponding to the central direction and the backward decision parameter of the forward decision parameters is similar to the forward and backward decision parameters of the embodiment of fig. 6. That is, in this embodiment, the center direction and the measurement beam direction corresponding to the back-determined parameter have an angle of 180 degrees.
In this embodiment, step S5 of FIG. 2 may include steps S51-S57 of FIG. 7. In step S51, the process controller 13 adds the forward decision parameters of each parameter combination to obtain a parameter sum of each parameter combination. The detailed operation of this step is the same as step S11 in the embodiment of fig. 5, and therefore, the detailed description thereof is omitted. In step S53, the processing controller 13 assumes that the forward decision parameter corresponding to the center direction of each parameter combination is the maximum value of all the rf signal parameters and the backward decision parameter is the minimum value of all the rf signal parameters, and performs a voting algorithm to determine whether the assumption is true on the rf signal parameters, so as to obtain the true votes of each parameter combination. The detailed operation of this step is the same as step S31 in the embodiment of fig. 6, and is not described herein again. It should be noted that the present invention is not limited to the execution sequence of the above steps S51 and S53, and the two steps can be performed simultaneously. In steps S55 to S57, the processing controller 13 obtains the efficiency score of each parameter combination according to the parameter and the established ticket number for each parameter combination, and then selects the center direction corresponding to the parameter combination with the maximum efficiency score as the target beam direction.
Further, please refer to fig. 1, fig. 7 and fig. 8, wherein fig. 8 illustrates an embodiment of obtaining the efficiency score in the target beam direction determining step in the antenna control method. In the embodiment of fig. 8, the process controller 13 performs steps S101 to S105 to obtain the efficiency scores of each parameter combination. In step S101 of fig. 8, the process controller 13 multiplies the sum of the parameters obtained in step S51 of fig. 7 by a first weight to obtain a first score; in step S103 of fig. 8, the process controller 13 multiplies the number of established tickets obtained in step S53 of fig. 7 by a second weight and adds the adjustment parameter to obtain a second score; in step S105 of fig. 8, the process controller 13 adds the first score and the second score to obtain the efficiency score. Algebraically, the steps S101 to S105 executed by the process controller 13 may be regarded as the following operational expressions:
Scorei＝α×Sumi+β×(Votei+γ)，
wherein, ScoreiTo score the efficiency, SumiAs a sum of parameters, VoteiTo establish the ticket number, α is the first weight, β is the second weight, and γ is the adjustment parameter.
Since the parameter and the number range of the established votes are greatly different, the process controller 13 performs linear normalization by using the first weight, the second weight, and the adjustment parameter in order to balance the influence of the parameter and the number on the efficiency score. The values of the first weight, the second weight and the adjustment parameter may depend on the type or characteristics of the antenna portion 11. For example, the second weight used for the antenna portion 11 with insignificant characteristics is set to a lower value than the antenna portion 11 with significant characteristics of the field pattern. Preferably, the first weight is set to be greater than the second weight. In comparison with the consideration of a single principle, the above-mentioned antenna control method combines the two principles, so that the determination of the target beam direction can be closer to the optimal beam direction of the antenna portion 11, i.e. the direction having the optimal signal transceiving efficiency.
Referring to fig. 9 and 10, fig. 9 is a functional block diagram of a communication system to which the communication system control method according to embodiments of the present invention is applied, and fig. 10 is a flowchart of the communication system control method according to an embodiment of the present invention. As shown in fig. 9, the communication system 2 includes a first antenna device 22 and a second antenna device 24. The first and second antenna devices 22 and 24 are similar to the antenna device 1 in the embodiment of fig. 1, wherein the first antenna device 22 includes an antenna portion 222 and a processing controller 224, and the second antenna device 24 includes an antenna portion 242 and a processing controller 244, and the hardware configuration of each component is not described in detail here. In one embodiment, the first antenna device 22 and the second antenna device 24 in the communication system 2 can perform Backhaul Network (Backhaul) connection via a Mesh Network (Mesh Network), wherein the first antenna device 22 is, for example, a radio base station (CAP), and the second antenna device 24 is, for example, a Radio Equipment (RE).
The communication system control method illustrated in fig. 10 may be applied to the communication system 2 to determine and control the target beam directions of the first and second antenna devices 22 and 24 in the communication system 2, respectively. In step S2, the second antenna device 24 is controlled to operate in the omni-directional mode, and the first antenna device 22 is controlled to perform a target beam direction determination process to determine a first target beam direction. In step S4, the first antenna device 22 is controlled to operate in a first target beam direction, and the second antenna device 24 is controlled to perform a target beam direction determination process to determine a second target beam direction. In step S6, the second antenna device 24 is controlled to operate in the second target beam direction.
Further, the target beam direction determining process includes: obtaining a plurality of radio frequency signal parameters respectively in a plurality of measuring beam directions, wherein two adjacent measuring beam directions in the measuring beam directions are separated by an angle difference; generating a plurality of parameter combinations according to the radio frequency signal parameters, wherein each parameter combination comprises a plurality of radio frequency signal parameters; and selecting one of the measurement beam directions as a target beam direction according to the parameter combinations. The selection method may be performed according to the sum of the forward decision parameters in each parameter combination, or performed according to the operation result of the voting algorithm, or performed in combination with the target beam direction decision flow of the two, as described in the above embodiments, and the detailed execution content is disclosed in the above embodiments and will not be described herein again. The first and second antenna devices 22 may determine the first and second target beam directions after performing the target beam direction determination process.
In one embodiment, the first antenna device 22 and the second antenna device 24 may be controlled by a monitoring station included in the communication system 2 or external to the communication system to perform steps S2-S6. In another embodiment, the steps S2-S6 can be performed by the process controller 224 of the first antenna apparatus 22 and the process controller 244 of the second antenna apparatus 24. Further, the processing controllers 224 and 244 of the first and second antenna devices 22 and 24 may first determine whether they are within the connectable communication range. After the confirmation, the processing controller 244 of the second antenna device 24 can control the antenna portion 242 to transmit and receive signals in the omni-directional mode, and the processing controller 224 of the first antenna device 22 executes the target beam direction determination process to determine the first target beam direction and generates the notification signal of the first target beam direction determination completion. Then, the processing controller 224 of the first antenna device 22 controls the antenna part 222 to transmit and receive signals in the first target beam direction, and the processing controller 244 of the second antenna device 24 receives the notification signal from the first antenna device 22, thereby performing a target beam direction determination procedure to determine the second target beam direction and controlling the antenna part 242 to transmit and receive signals in the second target beam direction.
Generally, for two antenna devices each having N measurement beam directions, the number of measurement beam direction combinations of the two devices is quadratic to N. Calculating the signal transceiving efficiency corresponding to each combination one by one will consume a lot of computation time. With the communication system control method provided in the above embodiment of the present invention, only 2N combinations of operations need to be performed, thereby reducing the execution time of the target beam direction combination determination process.
Please refer to fig. 9 and fig. 11 together, wherein fig. 11 is a flowchart illustrating a communication system control method according to another embodiment of the present invention. In step S21, the first antenna device 22 is turned on. In step S22, the second antenna device 24 is turned on. In step S23, the process controller 224 of the first antenna device 22 detects whether it can communicate with the second antenna device 24. In step S24, the process controller 244 of the second antenna device 24 detects whether it can communicate with the first antenna device 22. If the determination results in steps S23 and S24 are both yes, then step S25 is continued. If the determination result of either of the steps S23 and S24 is negative, the steps are repeated. When the number of times or the time of the repeated steps S23 or S24 exceeds a predetermined value, the first antenna device 22, the second antenna device 24 or the monitoring station connected to the first and second antenna devices 22 and 24 will send a connection error indication signal. It should be particularly noted that the present invention does not limit the sequence of steps S21 and S22, nor the sequence of steps S23 and S24. In addition, the above-mentioned detection procedure is an optional procedure, and the monitoring station may also perform the control of the first and second antenna devices 22 and 24 from step S25.
In step S25, the second antenna device 24 is controlled to operate in the omni-directional mode, and the first antenna device 22 is controlled to perform a target beam direction determination process to determine a first target beam direction. In step S26, the first antenna device 22 is controlled to operate in a first target beam direction, the second antenna device 24 is controlled to perform a target beam direction determination process to determine a second target beam direction, and the second antenna device 24 is controlled to operate in the second target beam direction. The steps S25 and S26 are the same as the steps S2 to S6 in the embodiment of fig. 10, and are not repeated herein.
In this embodiment, after determining that the target beam directions of the first and second antenna devices 22 and 24 are completed, it is determined whether a trigger condition is triggered, as shown in step S27. If yes, the first and second target beam directions are determined again, i.e., steps S25 and S26 are performed again. The trigger condition may include: the variation of the average rf signal parameter of the first antenna assembly 22 or the second antenna assembly 24 is greater than a predetermined threshold, such as 5 dbm. Further, the signal transceiving efficiency of the first antenna device 22 or the second antenna device 24 may vary with the change of the communication environment, and when the variation is large, the signal transceiving direction with the best efficiency of the two devices may be changed, so that the embodiment can respond to the above situation by determining step S27, thereby improving the adaptability of the communication system 2. In one embodiment, the determination step S27 may be performed periodically, or the first antenna device 22, the second antenna device 24 or the monitoring station may perform the step S27 when detecting the change of the communication environment.
In another embodiment, when a trigger condition is triggered, the trigger event is recorded in addition to re-determining the first and second target beam directions. The first antenna arrangement 22, the second antenna arrangement 24 or the monitoring station may count the number of triggering events, i.e. the number of times the triggering condition was triggered. When the number of times is greater than a predetermined number of times (e.g., 3 times), the predetermined threshold value, which is the criterion of the trigger condition, is increased. Further, when the communication system 2 is in an unstable communication environment, the average rf signal parameters of the antenna devices may vary within a wide range. In order to avoid that the system performs the determination of the signal transceiving direction too frequently due to the above situation, the preset threshold may be adjusted according to the time interval between the latest times of re-performing the determination.
By the implementation method, the antenna control method disclosed by the invention takes the radio frequency signal parameters related to the antenna pattern as the basis for selecting the target beam direction, and does not relate to the hardware architecture specification of a platform for generating a feed-in signal or performing operation on a received signal, so that the antenna control method has high adaptability. The antenna control method disclosed by the invention can reduce the influence of measurement noise and further improve the accuracy of selecting the target beam direction by using a plurality of radio frequency signal parameters as the basis of the signal transceiving efficiency in each direction to determine the target beam direction, namely, the determined target beam direction is closer to the direction with the optimal signal transceiving efficiency. In addition, the communication system control method disclosed by the invention reduces the number of the paired direction combinations by controlling the two mutually connected antenna devices to execute the target beam direction determination process in turn, thereby reducing the operation time and improving the execution efficiency.
Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.
Claims (8)
1. An antenna control method, comprising:
obtaining a plurality of radio frequency signal parameters respectively in a plurality of measuring beam directions, wherein two adjacent measuring beam directions in the measuring beam directions are separated by an angle difference;
generating a plurality of parameter combinations according to the radio frequency signal parameters, wherein each parameter combination comprises a plurality of the radio frequency signal parameters;
selecting a target beam direction from the measured beam directions according to the parameter combinations; and
controlling an antenna to transmit and receive signals in the target beam direction,
wherein the rf signal parameters in each of the parameter combinations include an odd number of forward decision parameters, the measured beam directions corresponding to the forward decision parameters include a central direction and a plurality of remaining directions symmetrically arranged with the central direction as an axis, and selecting the target beam direction from the measured beam directions according to the parameter combinations includes:
adding the forward decision parameters in each of the parameter combinations; and
and selecting the central direction corresponding to the parameter combination with the maximum sum as the target beam direction.
2. The antenna control method of claim 1, wherein any two adjacent directions of the center direction and the remaining directions are spaced apart from each other by the angle difference.
3. An antenna control method, comprising:
obtaining a plurality of radio frequency signal parameters respectively in a plurality of measuring beam directions, wherein two adjacent measuring beam directions in the measuring beam directions are separated by an angle difference;
generating a plurality of parameter combinations according to the radio frequency signal parameters, wherein each parameter combination comprises a plurality of the radio frequency signal parameters;
selecting a target beam direction from the measured beam directions according to the parameter combinations; and
controlling an antenna to transmit and receive signals in the target beam direction,
wherein the RF signal parameters of each of the parameter combinations include a forward decision parameter and a backward decision parameter, the measurement beam direction corresponding to the forward decision parameter and the measurement beam direction corresponding to the backward decision parameter have an angle of 180 degrees, and wherein selecting the target beam direction from the measurement beam directions according to the parameter combinations comprises:
for each of the parameter combinations, assuming that the forward decision parameter is the maximum value of the RF signal parameters and the backward decision parameter is the minimum value of the RF signal parameters, and executing a voting algorithm to determine whether the assumption is true or not by the RF signal parameters; and
selecting the measurement beam direction corresponding to the forward decision parameter in the parameter combination with the highest vote number in the execution result of the voting algorithm as the target beam direction.
4. An antenna control method, comprising:
obtaining a plurality of radio frequency signal parameters respectively in a plurality of measuring beam directions, wherein two adjacent measuring beam directions in the measuring beam directions are separated by an angle difference;
generating a plurality of parameter combinations according to the radio frequency signal parameters, wherein each parameter combination comprises a plurality of the radio frequency signal parameters;
selecting a target beam direction from the measured beam directions according to the parameter combinations; and
controlling an antenna to transmit and receive signals in the target beam direction,
wherein the rf signal parameters in each of the parameter combinations include an odd number of forward decision parameters and a backward decision parameter, the measured beam directions corresponding to the forward decision parameters include a central direction and a plurality of remaining directions symmetrically arranged with the central direction as an axis, and the central direction and the measured beam directions corresponding to the backward decision parameters form an angle of 180 degrees, and wherein selecting the target beam direction from the measured beam directions according to the parameter combinations comprises:
for each of these parameter combinations, performing:
adding the forward decision parameters to obtain a parameter sum;
assuming that the forward decision parameter corresponding to the center direction is the maximum value of the radio frequency signal parameters and the backward decision parameter is the minimum value of the radio frequency signal parameters, and executing a voting algorithm to determine whether the assumption is true or not by the radio frequency signal parameters so as to obtain a true vote number; and
obtaining an efficiency score according to the parameter and the number of established tickets; and
selecting the central direction corresponding to the parameter combination with the maximum efficiency score as the target beam direction.
5. The method of claim 4, wherein obtaining the efficiency score according to the parameters and the established ticket number comprises:
multiplying the parameter sum by a first weight to obtain a first score;
multiplying the number of established votes by a second weight and adding an adjustment parameter to obtain a second score; and
the first score and the second score are added to obtain the efficiency score.
6. The antenna control method of claim 5, wherein the first weight is greater than the second weight.
7. A method for controlling a communication system, the method being applicable to a communication system, the communication system including a first antenna apparatus and a second antenna apparatus, the method comprising:
controlling the second antenna device to work in an omnidirectional mode, and controlling the first antenna device to execute a target beam direction determining process so as to determine a first target beam direction;
when the first antenna device is controlled to work in the first target beam direction, the second antenna device is controlled to execute the target beam direction determination process so as to determine a second target beam direction;
controlling the second antenna device to operate in the second target beam direction; and
when a triggering condition is judged to be triggered, determining the first target beam direction and determining the second target beam direction again, wherein the triggering condition comprises that a variation value of an average radio frequency signal parameter of the first antenna device or the second antenna device is larger than a preset threshold value;
calculating the triggering times of the triggering condition; and
when the number of times is larger than a preset number of times, the preset threshold value is increased.
8. The method of claim 7 wherein the target beam direction determination process comprises:
obtaining a plurality of radio frequency signal parameters respectively in a plurality of measuring beam directions, wherein two adjacent measuring beam directions in the measuring beam directions are separated by an angle difference;
generating a plurality of parameter combinations according to the radio frequency signal parameters, wherein each parameter combination comprises a plurality of the radio frequency signal parameters; and
selecting one of the measured beam directions as the first target beam direction or the second target beam direction according to the parameter combinations.
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| TWI728416B (en) | 2021-05-21 |
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