CN111211849B - Method and apparatus for high frequency communication channel sounding - Google Patents
Method and apparatus for high frequency communication channel sounding Download PDFInfo
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- CN111211849B CN111211849B CN202010025092.4A CN202010025092A CN111211849B CN 111211849 B CN111211849 B CN 111211849B CN 202010025092 A CN202010025092 A CN 202010025092A CN 111211849 B CN111211849 B CN 111211849B
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- H04B17/00—Monitoring; Testing
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- 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
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Abstract
The disclosure provides a method and a device for detecting a high-frequency communication channel, and belongs to the technical field of communication. The method comprises the following steps: receiving a plurality of probe instants, the plurality of probe instants comprising a plurality of instants in a plurality of days of a year; if the current time is in a set time slot after the detection time, detecting and recording the communication quality of a communication channel on a plurality of frequencies; and selecting the frequency to transmit the electric wave according to the communication quality of the communication channel at each detection time and each frequency. The method can know the condition of the communication channel changing along with factors such as longitude, latitude, season, sunrise, sunset and the like by receiving the detection time comprising a plurality of times in a plurality of days in one year, detecting and recording the communication quality of the communication channel on a plurality of frequencies if the current time is in the set time slot after the detection time, and then selecting the frequency to transmit electric waves according to the communication quality of the communication channel on each detection time and each frequency, thereby effectively ensuring the communication effect and avoiding communication interruption.
Description
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a method and an apparatus for detecting a high-frequency communication channel.
Background
Short-wave communication (also called high-frequency communication) is a wireless communication technology with a wavelength of 100 m to 10 m and a frequency of 3 mhz to 30 mhz. Radio waves transmitted by short-wave communication propagate forward in a manner of reflecting back and forth between an ionosphere and the ground, and although the communication distance is long, the propagation of signals depends on the reflection of the ionosphere on the signals.
The ionosphere is an atmospheric high layer ionized by solar high-energy radiation and excitation of cosmic rays, and the height and the density are easily influenced by factors such as day and night, seasons, weather and the like, so that the stability of short-wave communication is poor, and the communication effect between two communication parties is poor or even interrupted.
Disclosure of Invention
The embodiment of the disclosure provides a method and a device for detecting a high-frequency communication channel, which can detect the communication channel between two communication parties in high-frequency communication, know the condition of the communication channel changing along with factors such as longitude and latitude, season, sunrise and sunset and the like, provide information for high-frequency communication and be beneficial to improving the communication effect. The technical scheme is as follows:
in one aspect, an embodiment of the present disclosure provides a method for high frequency communication channel sounding, where the method includes:
receiving a plurality of probe instants, the plurality of probe instants comprising a plurality of instants in a plurality of days of a year;
if the current time is in a set time slot after the detection time, detecting and recording the communication quality of a communication channel on a plurality of frequencies;
and selecting the frequency to transmit the electric wave according to the communication quality of the communication channel at each detection time and each frequency.
Optionally, the detecting and recording the communication quality of the communication channel on the multiple frequencies if the current time is in a set time slot after the detection time includes:
if the current time is in the 1+ (m-1) × (N +1) time slot after the detection time, all the detection stations adjust the carrier frequency to fm；
If the current time is in the (N +1+ (m-1) × (N +1) time slot after the detection time, the nth detection station transmits carrier frequency fmThe detection signal of (1);
if the current time is in the (i +1+ (m-1) × (N +1) time slot after the detection time, the nth detection station receives detectionSignal, detecting and recording the communication channel at carrier frequency fmThe quality of the communication at that time;
wherein M is greater than or equal to 1 and less than or equal to M and is an integer, M is the number of the plurality of frequencies, N is the number of the detection sites, N is not equal to i, N is greater than or equal to 1 and less than or equal to N and is an integer, i is greater than or equal to 1 and less than or equal to N and is an integer.
Optionally, the detecting and recording the communication quality of the communication channel on the multiple frequencies if the current time is in a set time slot after the detection time includes:
if the current time is in the 1+ (M-1) ((N +1) + M (N +1) ((k-1) time slot after the detection time, all detection stations adjust the carrier frequency to fm；
If the current time is in the N +1+ (M-1) (N +1) + M (N +1) × (k-1) time slots after the detection time, the N detection station transmitting carrier frequency is fmThe detection signal of (2);
if the current time is in the (i +1+ (M-1) (N +1) + M) ((N + 1)) (k-1) time slot after the detection time, the nth detection station receives the detection signal, detects and records the carrier frequency f of the communication channelmThe quality of the communication at that time;
the communication channel detected by the nth detection station in the K time slots is carried at the carrier frequency fmAs an average value of the communication quality of the communication channel of the nth probe station at the carrier frequency fmRecording the communication quality of the mobile terminal;
the method comprises the steps that K is the detection times of communication channels of the same detection station on the same carrier frequency, K is larger than or equal to 1 and smaller than or equal to K and is an integer, M is larger than or equal to 1 and smaller than or equal to M and is an integer, M is the number of multiple frequencies, N is the number of the detection stations, N is not equal to i, N is larger than or equal to 1 and smaller than or equal to N and is an integer, i is larger than or equal to 1 and smaller than or equal to N and is an integer.
Alternatively, fmF0+ (M-1) × Δ f, where f0 is the minimum of the carrier frequencies of the probing stations and f0+ (M-1) × Δ f is the maximum of the carrier frequencies of the probing stations.
Optionally, the intervals between two adjacent detection instants are equal.
In another aspect, an embodiment of the present disclosure provides an apparatus for high frequency communication channel sounding, where the apparatus includes:
a receiving module, configured to receive a plurality of detection times, where the plurality of detection times include a plurality of times in a plurality of days in a year;
the detection module is used for detecting and recording the communication quality of a communication channel on a plurality of frequencies if the current time is in a set time slot after the detection time;
and the communication module is used for selecting frequencies to transmit electric waves according to the communication quality of the communication channel at each detection time and each frequency.
Optionally, the detection module is configured to,
if the current time is in the 1+ (m-1) × (N +1) time slot after the detection time, all the detection stations adjust the carrier frequency to fm；
If the current time is in the N +1+ (m-1) × (N +1) time slot after the detection time, the nth detection station transmits carrier frequency fmThe detection signal of (1);
if the current time is in the (i +1+ (m-1) × (N +1) time slot after the detection time, the nth detection station receives the detection signal, detects and records the carrier frequency f of the communication channelmThe quality of the communication at that time;
wherein M is greater than or equal to 1 and less than or equal to M and is an integer, M is the number of the plurality of frequencies, N is the number of the detection sites, N is not equal to i, N is greater than or equal to 1 and less than or equal to N and is an integer, i is greater than or equal to 1 and less than or equal to N and i is an integer.
Optionally, the detection module is configured to,
if the current time is in the 1+ (M-1) ((N +1) + M (N +1) ((k-1) time slot after the detection time, all detection stations adjust the carrier frequency to fm；
If the current time is in the N +1+ (M-1) (N +1) + M (N +1) × (k-1) time slots after the detection time, the N detection station transmitting carrier frequency is fmThe detection signal of (1);
if the current time is in the (i +1+ (M-1) (N +1) + M) ((N + 1)) (k-1) time slot after the detection time, the nth detection station receives the detection signal and detectsAnd records the communication channel at carrier frequency fmThe quality of the communication at that time;
the communication channel detected by the nth detection station in the K time slots is carried at the carrier frequency fmAs an average value of the communication quality of the communication channel of the nth probe station at the carrier frequency fmRecording the communication quality of the mobile terminal;
the method comprises the steps that K is the detection times of communication channels of the same detection station on the same carrier frequency, K is larger than or equal to 1 and smaller than or equal to K and is an integer, M is larger than or equal to 1 and smaller than or equal to M and is an integer, M is the number of multiple frequencies, N is the number of the detection stations, N is not equal to i, N is larger than or equal to 1 and smaller than or equal to N and is an integer, i is larger than or equal to 1 and smaller than or equal to N and is an integer.
Alternatively, fmF0+ (M-1) × Δ f, where f0 is the minimum of the carrier frequencies of the probing stations and f0+ (M-1) × Δ f is the maximum of the carrier frequencies of the probing stations.
Optionally, the intervals between two adjacent detection instants are equal.
The technical scheme provided by the embodiment of the disclosure has the following beneficial effects:
by receiving the detection time comprising a plurality of moments in a plurality of days in one year, detecting and recording the communication quality of the communication channel on a plurality of frequencies if the current time is in the set time slot after the detection time, the situation that the communication channel changes along with factors such as longitude and latitude, season, sunrise and sunset and the like can be known, and then the frequency is selected to transmit electric waves according to the communication quality of the communication channel on each detection time and each frequency, so that the communication effect can be effectively ensured, and the communication interruption is avoided.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is an application scenario diagram of a high-frequency communication channel detection method provided in an embodiment of the present disclosure;
fig. 2 is a flowchart of a method for high frequency communication channel sounding provided by an embodiment of the present disclosure;
fig. 3 is a schematic diagram of carrier frequencies corresponding to respective time slots provided by the embodiment of the present disclosure;
FIG. 4 is an interaction diagram of a probe station in 1 st to 4 th time slots according to the embodiment of the present disclosure;
fig. 5 is a schematic diagram of interaction of a probe station in 1+ (m-1) × 4-4 + (m-1) × 4 timeslots according to an embodiment of the present disclosure;
fig. 6 is a schematic diagram of interaction of a probe station in 1+ (M-1) × 4-4 + (M-1) × 4 timeslots according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of an apparatus for high-frequency communication channel sounding according to an embodiment of the present disclosure.
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.
Fig. 1 is an application scenario diagram of a high-frequency communication channel detection method according to an embodiment of the present disclosure. Referring to fig. 1, the probe stations 1, 2 and 3 are distributed in different areas and communicate with each other through short waves reflected back and forth between the ionosphere and the ground. In the embodiment, the detection station 1 emits electric waves, and the electric waves are transmitted forwards in a mode of reflecting back and forth between an ionosphere and the ground and reach the detection station 2 and the detection station 3; the detection station 2 emits electric waves, and the electric waves are transmitted forwards in a back-and-forth reflection mode between an ionized layer and the ground and reach the detection station 1 and the detection station 3; the detection station 3 emits electric waves, and the electric waves are transmitted forwards in a mode of reflecting back and forth between an ionized layer and the ground and reach the detection station 1 and the detection station 2.
It should be noted that the detection stations shown in fig. 1 are only examples, and in practical applications, a greater number of detection stations may be deployed in a wider area, such as covering the whole china.
In addition, all the detection stations may be numbered according to arabic numerals, so that the respective detection stations sequentially emit radio waves in the order of the numbers from small to large to perform channel detection.
The embodiment of the disclosure provides a method for detecting a high-frequency communication channel. Fig. 2 is a flowchart of a method for high frequency communication channel sounding according to an embodiment of the present disclosure. Referring to fig. 2, the method includes:
step 101: a plurality of probe instants is received, the plurality of probe instants including a plurality of instants over a plurality of days of a year.
In this embodiment, the detection time may be input to all the detection sites in advance, and each detection site determines the current time based on the time unification system and automatically performs channel detection when the current time reaches the detection time. For example, the time of the whole point of each day is input to the probing stations, and the probing stations start to perform channel probing at 0:00, 1:00, 2:00, 3:00, 4:00, 5:00, 6:00, 7:00, 8:00, 9:00, 10:00, 11:00, 12:00, 13:00, 14:00, 15:00, 16:00, 17:00, 18:00, 19:00, 20:00, 21:00, 22:00, and 23:00 of each day, respectively. For another example, the channel detection is started at each of the detection stations at 1:30, 3:30, 5:30, 7:30, 9:30, 11:30, 13:30, 15:30, 17:30, 19:30, 21:30, and 23:30, respectively, and the detection stations at 1:30, 3:30, 5:30, 7:30, 9:30, 11:30, 13:30, 15:30, 17:30, 19:30, 21:30, and 23: 30. As another example, the entire time of day for 1 month, 2 months, 6 months, 7 months, 8 months, 12 months, and 0:00, 3:00, 6:00, 9:00, 12:00, 15:00, 18:00, 21:00 for 3 months, 4 months, 5 months, 9 months, 10 months, 11 months are input to the probing station, and the probing station starts probing the channel at 0:00, 1:00, 2:00, 3:00, 4:00, 5:00, 6:00, 7:00, 8:00, 9:00, 10:00, 11:00, 12:00, 13:00, 14:00, 15:00, 16:00, 17:00, 18:00, 19:00, 20:00, 21:00, 22:00, 23:00 for 1 month, 4 months, 5 months, 9:00, 9, 12 months, 0:00, 9:00, 12 months, 12:00, 0:00, 9:00, 12 months, 9:00, 12:00, 9:00, 12 months, 0:00, 0:00, 6:00, 21:00, 6:00, 21:00, 6:00, 7:00, etc. each day are input to the probing station, Channel sounding starts at 15:00, 18:00, 21: 00.
In practical application, the time unification system can be one of a global positioning system, a Beidou satellite navigation system and an atomic clock. The time unification system provides unified standard time signals and standard frequency signals for each detection station, and each detection station can obtain unified time according to the signals provided by the time unification system, so that channel detection is carried out based on the unified time.
Optionally, the intervals between two adjacent detection times may be equal, so as to accurately know the condition that the communication channel changes with factors such as latitude, longitude, season, sunrise, sunset, and the like, provide information for high-frequency communication, and facilitate improvement of communication effect.
Step 102: and if the current time is in a set time slot after the detection time, detecting and recording the communication quality of the communication channel on a plurality of frequencies.
In an implementation manner of this embodiment, the step 102 may include:
if the current time is in the 1+ (m-1) × (N +1) time slot after the detection time, all the detection stations adjust the carrier frequency to fm；
If the current time is in the N +1+ (m-1) × (N +1) time slot after the detection time, the nth detection station transmits carrier frequency fmThe detection signal of (1);
if the current time is in the (i +1+ (m-1) × (N +1) time slot after the detection time, the nth detection station receives the detection signal, detects and records that the carrier frequency of the communication channel is fmThe quality of the communication at that time;
wherein M is greater than or equal to 1 and less than or equal to M and is an integer, M is the number of a plurality of frequencies, N is the number of detection stations, N is not equal to i, N is greater than or equal to 1 and less than or equal to N and is an integer, i is greater than or equal to 1 and less than or equal to N and i is an integer.
According to the difference of the detection sites and the carrier frequencies, each detection site is arranged to transmit detection signals of different carrier frequencies in different time slots after the detection time in sequence, one detection site transmits the detection signals, and the other detection sites receive the detection signals transmitted by the detection site to detect the communication quality of a communication channel, so that the communication quality of the communication channel between the different detection sites on different carrier frequencies at the detection time is known.
In the present embodiment, the carrier frequency is adjusted to fmMeans that the resonant frequency of the oscillating circuit is adjusted to fmAt a transmission carrier frequency fmThe electric wave of (2). In practical applications, a proportional-integral-derivative (PID) controller may be used to adjust the carrier frequency.
Alternatively, the evaluation criteria of the channel quality may include signal-to-noise ratio, multipath delay, and frequency offset. In practical application, the received electric wave signal can be compared with the stored detection signal to determine the multipath time delay of the communication channel; and comparing the received detection signal with the stored detection signal to obtain the signal-to-noise ratio and the frequency offset of the communication channel.
Alternatively, fmF0+ (M-1) × Δ f, where f0 is the minimum of the carrier frequencies of the probing stations and f0+ (M-1) × Δ f is the maximum of the carrier frequencies of the probing stations.
By averagely dividing the range of the carrier frequency of the detection station, the method is favorable for accurately knowing the change condition of the communication channel on different carrier frequencies, provides information for high-frequency communication and is favorable for improving the communication effect.
Fig. 3 is a schematic diagram of carrier frequencies corresponding to respective time slots according to an embodiment of the present disclosure. Referring to fig. 3, taking the probe station shown in fig. 1 as an example, in the 1 st to 4 th time slots, the carrier frequency is f 0; … … in the 1+ (m-1) × 4-4 + (m-1) × 4 time slots, the carrier frequency is f0+ (m-1) × Δ f; … … in the 1+ (M-1) × 4 ~ 4+ (M-1) × 4 slots, the carrier frequency is f0+ (M-1) × Δ f.
Based on the correspondence shown in fig. 3, or taking the probe station shown in fig. 1 as an example, the implementation process may include:
fig. 4 is an interaction diagram of a probe station in 1 st to 4 th time slots according to the embodiment of the present disclosure. Referring to fig. 4, in the 1 st time slot after the probing time, probing station 1, probing station 2, and probing station 3 adjust the carrier frequency to f 0;
in the 2 nd time slot after the detection time, the detection station 1 transmits a detection signal with the carrier frequency of f0, the detection station 2 and the detection station 3 receive the detection signal, and the communication quality of the communication channel of the detection station 1 at the carrier frequency of f0 is evaluated according to the detection signal;
in the 3 rd time slot after the detection time, the detection station 2 transmits a detection signal with the carrier frequency of f0, the detection station 1 and the detection station 3 receive the detection signal, and the communication quality of the communication channel of the detection station 2 at the carrier frequency of f0 is evaluated according to the detection signal;
in the 4 th time slot after the detection time, the detection station 3 transmits a detection signal with the carrier frequency of f0, the detection station 1 and the detection station 2 receive the detection signal, and the communication quality of a communication channel of the detection station 3 at the carrier frequency of f0 is evaluated according to the detection signal;
……
fig. 5 is a schematic diagram of interaction of a probe station in 1+ (m-1) × 4-4 + (m-1) × 4 timeslots according to an embodiment of the present disclosure. Referring to fig. 5, in the 1+ (m-1) × 4 time slots after the probing time, the probing stations 1, 2 and 3 adjust the carrier frequency to f0+ (m-1) × Δ f;
in the 2+ (m-1) × 4 time slots after the detection time, the detection station 1 transmits a detection signal with the carrier frequency of f0+ (m-1) × Δ f, the detection station 2 and the detection station 3 receive the detection signal and evaluate the communication quality of the communication channel of the detection station 1 at the carrier frequency of f0+ (m-1) × Δ f according to the detection signal;
in the 3+ (m-1) × 4 time slots after the detection time, the detection station 2 transmits a detection signal with the carrier frequency of f0+ (m-1) × Δ f, the detection station 1 and the detection station 3 receive the detection signal, and the communication quality of the communication channel of the detection station 2 at the carrier frequency of f0+ (m-1) × Δ f is evaluated according to the detection signal;
in the 4+ (m-1) × 4 time slots after the detection time, the detection station 3 transmits a detection signal with the carrier frequency of f0+ (m-1) × Δ f, the detection station 1 and the detection station 2 receive the detection signal, and the communication quality of the communication channel of the detection station 3 at the carrier frequency of f0+ (m-1) × Δ f is evaluated according to the detection signal;
……
fig. 6 is a schematic diagram of interaction of a probe station in 1+ (M-1) × 4-4 + (M-1) × 4 timeslots according to an embodiment of the present disclosure. Referring to fig. 6, in the 1+ (M-1) × 4 time slots after the probing time, the probing stations 1, 2 and 3 adjust the carrier frequency to f0+ (M-1) × Δ f;
in the 2+ (M-1) × 4 time slots after the probing time, the probing station 1 transmits a probing signal with the carrier frequency of f0+ (M-1) × Δ f, the probing stations 2 and 3 receive the probing signal, and the communication quality of the communication channel of the probing station 1 at the carrier frequency of f0+ (M-1) × Δ f is evaluated according to the probing signal;
in the 3+ (M-1) × 4 time slots after the detection time, the detection station 2 transmits a detection signal with the carrier frequency of f0+ (M-1) × Δ f, the detection station 1 and the detection station 3 receive the detection signal, and the communication quality of the communication channel of the detection station 2 at the carrier frequency of f0+ (M-1) × Δ f is evaluated according to the detection signal;
in the 4+ (M-1) × 4 time slots after the probing time, the probing station 3 transmits a probing signal with the carrier frequency of f0+ (M-1) × Δ f, the probing station 1 and the probing station 2 receive the probing signal, and the communication quality of the communication channel of the probing station 3 at the carrier frequency of f0+ (M-1) × Δ f is evaluated according to the probing signal.
In another implementation manner of this embodiment, the step 102 may include:
if the current time is in the 1+ (M-1) ((N +1) + M (N +1) ((k-1) time slot after the detection time, all detection stations adjust the carrier frequency to fm；
If the current time is in the N +1+ (M-1) (N +1) + M (N +1) × (k-1) time slots after the detection time, the N detection station transmitting carrier frequency is fmThe electric wave of (2);
if the nth detecting station receives the electric wave in the (i +1+ (M-1) (N +1) + M) ((N + 1)) (k-1) time slot after the detecting time at the current time, detecting the communication channel at the carrier frequency fmThe quality of the communication at that time;
the communication channel detected by the nth detection station in the K time slots is carried at the carrier frequency fmAs an average value of the communication quality of the communication channel of the nth probe station at the carrier frequency fmRecording the communication quality of;
k is the detection times of a communication channel of the same detection station on the same carrier frequency, K is greater than or equal to 1 and less than or equal to K and is an integer, M is greater than or equal to 1 and less than or equal to M and is an integer, M is the number of a plurality of frequencies, N is the number of the detection stations, N is not equal to i, N is greater than or equal to 1 and less than or equal to N and is an integer, i is greater than or equal to 1 and less than or equal to N and is an integer.
The communication quality of the communication channel of each detection station on each carrier frequency is detected for multiple times, and the average value of the multiple detection results is taken as the final result to be recorded, so that the detection error caused by extreme conditions can be eliminated, and the accuracy of the detection result can be improved.
Based on the implementation processes shown in fig. 4, 5, and 6, taking the detection time as the integral time of each day as an example, the implementation processes shown in fig. 4, 5, and 6 are sequentially executed between 0:00 and 1:00 of each day, and the cycle is performed K times. Taking the average value of the communication quality detected by the 2 nd time slot, … … nd, 2+ M (N +1) × (K-1) time slot, … … nd, 2+ M (N +1) × (K-1) time slot after 0:00 as the communication quality of the communication channel of the 1 st detecting station at the carrier frequency f 0; taking the average value of the communication quality detected by the 3 rd time slot, … …, 3+ M (N +1) × (K-1), … … and 3+ M (N +1) × (K-1) after 0:00 as the communication quality of the communication channel of the 2 nd detecting station at the carrier frequency f 0; taking the average value of the communication quality detected by the 4 th time slot, … …, 4+ M (N +1) × (K-1), … … and 4+ M (N +1) × (K-1) after 0:00 as the communication quality of the communication channel of the 3 rd detection station at the carrier frequency f 0; the average value of the communication quality detected in the 5 th slot, … …, 5+ M (N +1) × (K-1), … …, and 5+ M (N +1) × (K-1) slots after 0:00 is used as the communication quality of the communication channel of the 4 th probe station at the carrier frequency f 0.
……
Taking the average value of the communication quality detected by the 2+ (M-1) × 4 time slots, … …, the 2+ (M-1) × 4+ M × (N +1) × (K-1) time slots, … …, the 2+ (M-1) × 4+ M (N +1) (K-1) time slots after 0:00 as the communication quality of the communication channel of the 1 st probing station at the carrier frequency f 0; taking the average value of the communication quality detected by the 3+ (M-1) × 4 time slots, … …, the 3+ (M-1) × 4+ M × (N +1) × (K-1) time slots, … …, the 3+ (M-1) × 4+ M (N +1) (K-1) time slots after 0:00 as the communication quality of the communication channel of the 2 nd probing station at the carrier frequency f 0; taking the average value of the communication quality detected by the 4+ (M-1) × 4 time slots, … …, the 4+ (M-1) × 4+ M ((+ 1) × (K-1) time slots, … …, the 4+ (M-1) × 4+ M (+ 1) ((K-1) time slots after 0:00 as the communication quality of the communication channel of the 3 rd detecting station at the carrier frequency f 0; the average value of the communication quality detected in 5+ (M-1) × 4 time slots, … …, 5+ (M-1) × 4+ M (+ 1) × (K-1) time slots, … …, 5+ (M-1) × 4+ M (+ 1) (-1) time slots (K-1) after 0:00 is used as the communication quality of the communication channel of the 4 th probing station at the carrier frequency f0+ (M-1) × Δ f.
……
Taking the average value of the communication quality detected by 2+ (M-1) × 4 time slots, … …, 2+ (M-1) × 4+ M (+ 1) × (K-1) time slots, … …, 2+ (M-1) × 4+ M (+ 1) (-1) time slots after 0:00 as the communication quality of the communication channel of the 1 st detecting station at the carrier frequency f 0; taking the average value of the communication quality detected by the 3+ (M-1) × 4 time slots, … …, the 3+ (M-1) × 4+ M (+ 1) × (K-1) time slots, … …, the 3+ (M-1) × 4+ M (+ 1) (-1) time slots after 0:00 as the communication quality of the communication channel of the 2 nd detecting station at the carrier frequency f 0; taking the average value of the communication quality detected by the 4+ (M-1) × 4 time slots, … …, the 4+ (M-1) × 4+ M (N +1) × (K-1) time slots, … …, the 4+ (M-1) × 4+ M (N +1) (K-1) time slots after 0:00 as the communication quality of the communication channel of the 3 rd detecting station at the carrier frequency f 0; the average value of the communication quality detected in 5+ (M-1) × 4 time slots, … …, 5+ (M-1) × 4+ M (+ 1) × (K-1) time slots, … …, 5+ (M-1) × 4+ M (+ 1) × (K-1) time slots after 0:00 is used as the communication quality of the communication channel of the 4 th probing station at the carrier frequency f0+ (M-1) × Δ f.
And then sequentially executing the implementation processes shown in the figures 4, 5 and 6 between 1:00 and 2:00 every day and circulating for K times. Taking the average value of the communication quality detected by the 2 nd time slot, … … nd, 2+ M (N +1) × (K-1) time slot, … … nd, 2+ M (N +1) × (K-1) time slot after 1:00 as the communication quality of the communication channel of the 1 st detecting station at the carrier frequency f 0; taking the average value of the communication quality detected by the 3 rd time slot, … …, 3+ M (N +1) × (K-1), … … and 3+ M (N +1) × (K-1) after 1:00 as the communication quality of the communication channel of the 2 nd detecting station at the carrier frequency f 0; taking the average value of the communication quality detected by the 4 th time slot, … …, 4+ M (N +1) × (K-1), … … and 4+ M (N +1) × (K-1) after 1:00 as the communication quality of the communication channel of the 3 rd detection station at the carrier frequency f 0; the average value of the communication quality detected in the 5 th slot, … …, 5+ M (N +1) × (K-1), … …, and 5+ M (N +1) × (K-1) slots after 1:00 is used as the communication quality of the communication channel of the 4 th probe station at the carrier frequency f 0.
……
Taking the average value of the communication quality detected by 2+ (M-1) × 4 time slots, … …, 2+ (M-1) × 4+ M (+ 1) × (K-1) time slots, … …, 2+ (M-1) × 4+ M (+ 1) (-1) time slots (K-1) after 1:00 as the communication quality of the communication channel of the 1 st probing station at the carrier frequency f 0; taking the average value of the communication quality detected by the 3+ (M-1) × 4 time slots, … …, the 3+ (M-1) × 4+ M ((+ 1) × (K-1) time slots, … …, the 3+ (M-1) × 4+ M (+ 1) ((K-1) time slots after 1:00 as the communication quality of the communication channel of the 2 nd detecting station at the carrier frequency f 0; taking the average value of the communication quality detected by 4+ (M-1) × 4 time slots, … …, 4+ (M-1) × 4+ M (+ 1) × (K-1) time slots, … …, 4+ (M-1) × 4+ M (+ 1) (-1) time slots (K-1) after 1:00 as the communication quality of the communication channel of the 3 rd probing station at the carrier frequency f 0; the average value of the communication quality detected in 5+ (M-1) × 4 time slots, … …, 5+ (M-1) × 4+ M (+ 1) × (K-1) time slots, … …, 5+ (M-1) × 4+ M (+ 1) (-1) time slots (K-1) after 1:00 is used as the communication quality of the communication channel of the 4 th probing station at the carrier frequency f0+ (M-1) × Δ f.
……
Taking the average value of the communication quality detected by 2+ (M-1) × 4 time slots, … …, 2+ (M-1) × 4+ M (+ 1) × (K-1) time slots, … …, 2+ (M-1) × 4+ M (+ 1) (-1) time slots after 1:00 as the communication quality of the communication channel of the 1 st detecting station at the carrier frequency f 0; taking the average value of the communication quality detected by the 3+ (M-1) × 4 time slots, … …, the 3+ (M-1) × 4+ M (N +1) × (K-1) time slots, … …, the 3+ (M-1) × 4+ M (N +1) (K-1) time slots after 1:00 as the communication quality of the communication channel of the 2 nd detecting station at the carrier frequency f 0; taking the average value of the communication quality detected by 4+ (M-1) × 4 time slots, … …, 4+ (M-1) × 4+ M (+ 1) × (K-1) time slots, … …, 4+ (M-1) × 4+ M (+ 1) (-1) time slots after 1:00 as the communication quality of the communication channel of the 3 rd probing station at the carrier frequency f 0; the average value of the communication quality detected in 5+ (M-1) × 4 time slots, … …, 5+ (M-1) × 4+ M (+ 1) × (K-1) time slots, … …, 5+ (M-1) × 4+ M (+ 1) × (K-1) time slots after 1:00 is used as the communication quality of the communication channel of the 4 th probing station at the carrier frequency f0+ (M-1) × Δ f.
……
Alternatively, fmF0+ (M-1) × Δ f, where f0 is the minimum of the carrier frequencies of the probing stations and f0+ (M-1) × Δ f is the maximum of the carrier frequencies of the probing stations.
By averagely dividing the range of the carrier frequency of the detection station, the method is favorable for accurately knowing the change condition of the communication channel on different carrier frequencies, provides information for high-frequency communication and is favorable for improving the communication effect.
Step 103: according to the communication quality of the communication channel at each detection time and each frequency, the frequency is selected to transmit the electric wave.
Alternatively, the evaluation criteria of the channel quality may include signal-to-noise ratio, multipath delay, and frequency offset.
In practical application, the types of the evaluation criteria may be prioritized, and the channel condition of the evaluation criteria with high priority is considered first, and then the channel condition of the evaluation criteria with low priority is considered. For example, the priority of the snr is better than the multipath delay and the frequency offset, the frequency with the highest snr is selected first, and if there are multiple frequencies with the highest snr, then the frequency with the lowest multipath delay or frequency offset is selected from the multiple frequencies with the highest snr.
Different weights may be given to the evaluation criteria, the channel conditions of all the evaluation criteria are multiplied by the corresponding weights and added, and then the frequency with the largest calculation result is selected.
The embodiment of the disclosure can know the condition of the communication channel changing along with factors such as longitude and latitude, season, sunrise and sunset and the like by receiving the detection time comprising a plurality of times in a plurality of days in one year, detecting and recording the communication quality of the communication channel in a plurality of frequencies if the current time is in the set time slot after the detection time, and then selecting the frequency to transmit the electric wave according to the communication quality of the communication channel in each detection time and each frequency, thereby effectively ensuring the communication effect and avoiding communication interruption.
The embodiment of the present disclosure provides an apparatus for detecting a high-frequency communication channel, which is suitable for the method for detecting a high-frequency communication channel shown in fig. 2. Fig. 7 is a schematic structural diagram of an apparatus for high-frequency communication channel sounding according to an embodiment of the present disclosure. Referring to fig. 7, the apparatus includes:
a receiving module 201, configured to receive a plurality of detection times, where the plurality of detection times include a plurality of times in a plurality of days in a year;
a detection module 202, configured to detect and record communication quality of a communication channel on multiple frequencies if the current time is within a set time slot after the detection time;
and a communication module 203 for selecting the frequency to transmit the electric wave according to the communication quality of the communication channel at each detection time and each frequency.
In one implementation of the present embodiment, the detection module 202 can be configured to,
if the current time is in the 1+ (m-1) × (N +1) time slot after the detection time, all the detection stations adjust the carrier frequency to fm；
If the current time is in the (N +1+ (m-1) × (N +1) time slot after the detection time, the nth detection station transmits carrier frequency fmThe electric wave of (2);
if the current time is in the (i +1+ (m-1) × (N +1) time slot after the detection time, the nth detection station receives the electric wave, detects and records that the carrier frequency of the communication channel is fmGeneral purpose of timeA signal quality;
wherein M is greater than or equal to 1 and less than or equal to M and is an integer, M is the number of a plurality of frequencies, N is the number of detection stations, N is not equal to i, N is greater than or equal to 1 and less than or equal to N and is an integer, i is greater than or equal to 1 and less than or equal to N and i is an integer.
In another implementation of the present embodiment, the detection module 202 may be configured to,
if the current time is in the 1+ (M-1) ((N +1) + M (N +1) ((k-1) time slot after the detection time, all detection stations adjust the carrier frequency to fm；
If the current time is in the N +1+ (M-1) (N +1) + M (N +1) × (k-1) time slots after the detection time, the N detection station transmitting carrier frequency is fmThe electric wave of (2);
if the current time is in the (i +1+ (M-1) (N +1) + M) ((N + 1)) (k-1) time slot after the detection time, the nth detection station receives the electric wave, detects and records the communication channel at the carrier frequency fmThe quality of the communication at that time;
the communication channel detected by the nth detection station in the K time slots is carried at the carrier frequency fmAs an average value of the communication quality of the communication channel of the nth probe station at the carrier frequency fmRecording the communication quality of the mobile terminal;
the method comprises the steps that K is the detection times of a communication channel of the same detection station on the same carrier frequency, K is greater than or equal to 1 and less than or equal to K and is an integer, M is greater than or equal to 1 and less than or equal to M and is an integer, M is the number of a plurality of frequencies, N is the number of the detection stations, N is not equal to i, N is greater than or equal to 1 and less than or equal to N and is an integer, i is greater than or equal to 1 and less than or equal to N and is an integer.
In both implementations, optionally fmF0+ (M-1) × Δ f, where f0 is the minimum of the carrier frequencies of the probing stations and f0+ (M-1) × Δ f is the maximum of the carrier frequencies of the probing stations.
Alternatively, the intervals between two adjacent detection times may be equal.
It should be noted that: in the apparatus for detecting a high frequency communication channel provided in the foregoing embodiment, when detecting a high frequency communication channel, only the division of the above functional modules is exemplified, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the apparatus is divided into different functional modules, so as to complete all or part of the above described functions. In addition, the apparatus for high-frequency communication channel detection and the method embodiment for high-frequency communication channel detection provided in the above embodiments belong to the same concept, and specific implementation processes thereof are detailed in the method embodiment and are not described herein again.
The above-mentioned serial numbers of the embodiments of the present disclosure are merely for description, and do not represent the advantages or disadvantages of the embodiments.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is intended to be exemplary only and not to limit the present disclosure, and any modification, equivalent replacement, or improvement made without departing from the spirit and scope of the present disclosure is to be considered as the same as the present disclosure.
Claims (8)
1. A method of high frequency communication channel sounding, the method comprising:
receiving a plurality of probe instants, the plurality of probe instants comprising a plurality of instants in a plurality of days of a year;
if the current time is in a set time slot after the detection time, detecting and recording the communication quality of a communication channel on a plurality of frequencies;
selecting frequencies to transmit electric waves according to the communication quality of a communication channel at each detection time and each frequency;
if the current time is in a set time slot after the detection time, detecting and recording the communication quality of the communication channel on a plurality of frequencies, including:
if the current time is in the 1+ (m-1) × (N +1) time slot after the detection time, all the detection stations adjust the carrier frequency to fm；
If when it is usedThe former time is in the (N +1+ (m-1) × (N +1) time slot after the detection time, and the nth detection station transmits carrier frequency fmThe detection signal of (1);
if the current time is in the (i +1+ (m-1) × (N +1) th time slot after the detection time, the nth detection station receives the detection signal, detects and records that the carrier frequency of the communication channel is fmThe quality of the communication at that time;
wherein M is greater than or equal to 1 and less than or equal to M and is an integer, M is the number of the plurality of frequencies, N is the number of the detection sites, N is not equal to i, N is greater than or equal to 1 and less than or equal to N and is an integer, i is greater than or equal to 1 and less than or equal to N and i is an integer.
2. The method of claim 1, wherein detecting and recording the communication quality of the communication channel on a plurality of frequencies if the current time is within a set time slot after the detection time, further comprising:
if the current time is in the 1+ (M-1) ((N +1) + M (N +1) ((k-1) time slot after the detection time, all detection stations adjust the carrier frequency to fm；
If the current time is in the N +1+ (M-1) (N +1) + M (N +1) × (k-1) time slots after the detection time, the N detection station transmitting carrier frequency is fmThe detection signal of (1);
if the current time is in the (i +1+ (M-1) × (N +1) + M) × (N +1) × (k-1) time slots after the detection time, the nth detection station receives the detection signal, detects and records the carrier frequency f of the communication channelmThe quality of the communication at that time;
the communication channel detected by the nth detection station in the K time slots is carried at the carrier frequency fmAs an average value of the communication quality of the communication channel of the nth probe station at the carrier frequency fmRecording the communication quality of the mobile terminal;
the method comprises the steps that K is the detection times of communication channels of the same detection station on the same carrier frequency, K is larger than or equal to 1 and smaller than or equal to K and is an integer, M is larger than or equal to 1 and smaller than or equal to M and is an integer, M is the number of multiple frequencies, N is the number of the detection stations, N is not equal to i, N is larger than or equal to 1 and smaller than or equal to N and is an integer, i is larger than or equal to 1 and smaller than or equal to N and is an integer.
3. Method according to claim 1 or 2, characterized in that fmF0+ (M-1) × Δ f, where f0 is the minimum of the carrier frequencies of the probing stations and f0+ (M-1) × Δ f is the maximum of the carrier frequencies of the probing stations.
4. A method according to claim 1 or 2, characterized in that the intervals between two adjacent detection instants are equal.
5. An apparatus for high frequency communication channel sounding, the apparatus comprising:
a receiving module, configured to receive a plurality of detection times, where the plurality of detection times include a plurality of times in a plurality of days in a year;
the detection module is used for detecting and recording the communication quality of a communication channel on a plurality of frequencies if the current time is in a set time slot after the detection time;
the communication module is used for selecting frequencies to transmit electric waves according to the communication quality of a communication channel at each detection moment and each frequency;
the detection module is used for detecting the position of the target,
if the current time is in the 1+ (m-1) × (N +1) time slot after the detection time, all the detection stations adjust the carrier frequency to fm；
If the current time is in the (N +1+ (m-1) × (N +1) time slot after the detection time, the nth detection station transmits carrier frequency fmThe detection signal of (1);
if the current time is in the (i +1+ (m-1) × (N +1) time slot after the detection time, the nth detection station receives the detection signal, detects and records the carrier frequency f of the communication channelmThe quality of the communication at that time;
wherein M is greater than or equal to 1 and less than or equal to M and is an integer, M is the number of the plurality of frequencies, N is the number of the detection sites, N is not equal to i, N is greater than or equal to 1 and less than or equal to N and is an integer, i is greater than or equal to 1 and less than or equal to N and i is an integer.
6. The apparatus of claim 5, wherein the detection module is configured to,
if the current time is in the 1+ (M-1) ((N +1) + M (N +1) ((k-1) time slot after the detection time, all detection stations adjust the carrier frequency to fm；
If the current time is in the N +1+ (M-1) (N +1) + M (N +1) × (k-1) time slots after the detection time, the N detection station transmitting carrier frequency is fmThe detection signal of (1);
if the current time is in the (i +1+ (M-1) (N +1) + M) ((N + 1)) (k-1) time slot after the detection time, the nth detection station receives the detection signal, detects and records the carrier frequency f of the communication channelmThe quality of the communication at that time;
the communication channel detected by the nth detection station in the K time slots is carried at the carrier frequency fmAs the communication channel of the nth probe station at carrier frequency fmRecording the communication quality of the mobile terminal;
the method comprises the steps that K is the detection times of communication channels of the same detection station on the same carrier frequency, K is larger than or equal to 1 and smaller than or equal to K and is an integer, M is larger than or equal to 1 and smaller than or equal to M and is an integer, M is the number of multiple frequencies, N is the number of the detection stations, N is not equal to i, N is larger than or equal to 1 and smaller than or equal to N and is an integer, i is larger than or equal to 1 and smaller than or equal to N and is an integer.
7. Device according to claim 5 or 6, characterized in that fmF0+ (M-1) × Δ f, where f0 is the minimum of the carrier frequencies of the probing stations and f0+ (M-1) × Δ f is the maximum of the carrier frequencies of the probing stations.
8. A device according to claim 5 or 6, wherein the intervals between two adjacent detection instants are equal.
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