KR101806482B1 - Auto channel selecting and changing method for village broadcasting appatus - Google Patents

Auto channel selecting and changing method for village broadcasting appatus Download PDF

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Publication number
KR101806482B1
KR101806482B1 KR1020160016024A KR20160016024A KR101806482B1 KR 101806482 B1 KR101806482 B1 KR 101806482B1 KR 1020160016024 A KR1020160016024 A KR 1020160016024A KR 20160016024 A KR20160016024 A KR 20160016024A KR 101806482 B1 KR101806482 B1 KR 101806482B1
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KR
South Korea
Prior art keywords
channel
communication
receiver
representative
transmitter
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KR1020160016024A
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Korean (ko)
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KR20170094823A (en
Inventor
강영흥
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군산대학교 산학협력단
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Priority to KR1020160016024A priority Critical patent/KR101806482B1/en
Publication of KR20170094823A publication Critical patent/KR20170094823A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
    • H04H20/61—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for local area broadcast, e.g. instore broadcast
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/0082—Monitoring; Testing using service channels; using auxiliary channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/20—Monitoring; Testing of receivers
    • H04B17/24—Monitoring; Testing of receivers with feedback of measurements to the transmitter
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The present invention relates to an automatic channel selection method for an automatic channel selection transmitter, and more particularly, to a method for selecting an automatic channel selection transmitter, including transmitting a test signal to a representative receiver, receiving a reply signal from the representative receiver, And selecting a channel that is determined to be capable of communication as a communication channel, wherein the representative receiver is a receiver having the worst channel environment, thereby selecting and changing a channel to perform communication fast and accurately .

Description

[0001] The present invention relates to an automatic channel selecting and changing method for a village broadcasting transmitter,

The present invention relates to a method for automatic selection of channels available for use by a transmitter for broadcast announcement and, in the case where reception of a part of a plurality of receivers is disturbed by radio and can not be received, Quot; is automatically selected and changed.

Transmitters for public broadcasting use 5 frequencies or 10 frequencies. In the village broadcasting, the residents of the village members are often located at various locations for receiving broadcasts from the existing transmitter of the town hall. Therefore, if the same frequency is used, there is a possibility of transmission collision with the neighboring village transmitter, There may be recipients. Therefore, all members must select and receive an empty channel frequency without interference with neighboring villages. In the case of performing allotment investigations for all members, time consuming problems arise.

The prior art related to the present invention includes a 'village broadcasting system and a driving method thereof (Korean Patent Publication No. 10-2011-0089122).

A first problem to be solved by the present invention is to provide a method of selecting a representative receiver having a strong frequency influence by a neighboring village transmitter among a plurality of receivers distributed around the transmitter.

A second problem to be solved by the present invention is to provide an automatic channel selection transmitter that automatically selects and changes a channel for communication in a short time using a representative receiver.

In order to solve the first problem, the present invention provides a method of transmitting a test signal to a representative receiver, Receiving a reply signal from the representative receiver; Determining whether communication of the corresponding channel is possible using the return signal; And selecting a channel determined to be capable of communication as a communication channel, wherein the representative receiver is a receiver having the worst channel environment.

According to another embodiment of the present invention, the representative receiver is an automatic channel selection method of a transmitter, characterized in that the representative receiver is a receiver that is farthest within a corresponding range, divided into four directions of east, west, north, have.

According to another embodiment of the present invention, when it is determined that the communication is not possible as a result of the determination of the communication availability of the channel, the transmitter may further include sequentially selecting other channels according to a preset order Automatic channel selection method.

According to another embodiment of the present invention, the order of selecting the channel is set to a channel selection combination between transmitters by calculating the number of channel selection cases with other adjacent transmitters. May be a selection method.

According to another embodiment of the present invention, the step of determining whether or not communication of the corresponding channel is possible may include determining that communication is possible when there is no interference of the corresponding channel or when the reception strength is equal to or greater than a threshold value. Lt; / RTI >

According to another embodiment of the present invention, there is provided an automatic channel selection method of a transmitter, which further includes sequentially selecting other channels in accordance with a predetermined order when a situation where interference or communication is impossible during communication occurs have.

According to another embodiment of the present invention, the communication channel is a channel for a town broadcasting.

In order to solve the second problem, the present invention provides a communication system comprising: a communication unit for transmitting a test signal to a representative receiver and receiving a reply signal from the representative receiver; And a processor for determining whether or not communication of the corresponding channel is possible by using the return signal and for selecting a channel determined to be capable of communication as a communication channel, wherein the representative receiver is a receiver having the worst channel condition Lt; / RTI > transmitter.

According to another embodiment of the present invention, the representative receiver may be an automatic channel selection transmitter characterized in that the representative receiver is a receiver that is farthest within a corresponding range, divided into four directions of east, north, south, north, and north /

According to another embodiment of the present invention, when the communication channel is determined to be incapable of communicating, or when a situation where interference or communication is impossible during communication occurs, the processor sequentially processes the other channels And selecting an automatic channel selection transmitter.

According to another embodiment of the present invention, the order of selecting the channels is set to a channel selection combination between transmitters by calculating the number of channel selection cases with other adjacent transmitters. Lt; / RTI >

According to another embodiment of the present invention, the processor may determine that communication is possible when there is no interference of the channel or the reception strength is equal to or greater than a threshold value.

According to another embodiment of the present invention, the communication channel is a channel for a town broadcasting.

According to the present invention, it is possible to select and change a channel for performing communication quickly and accurately by confirming channel information using only representative receivers, without conducting an all-round search in order to perform communication without channel interference.

1 is a block diagram of an automatic channel selection transmitter in accordance with an embodiment of the present invention.
FIG. 2 illustrates that an automatic channel selection transmitter according to an embodiment of the present invention selects a channel using a representative receiver.
3 is a flowchart illustrating a method of selecting an automatic channel of a transmitter according to an exemplary embodiment of the present invention.
4 and 5 are flowcharts of a method for selecting an automatic channel of a transmitter according to another embodiment of the present invention.

Prior to the description of the concrete contents of the present invention, for the sake of understanding, the outline of the solution of the problem to be solved by the present invention or the core of the technical idea will be given first.

The automatic channel selection method of a transmitter according to an embodiment of the present invention includes transmitting a test signal to a representative receiver, receiving a reply signal from the representative receiver, determining whether communication of the corresponding channel is possible using the reply signal, And selecting a channel determined to be capable of communication as a communication channel, wherein the representative receiver is a receiver having the worst channel environment.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It will be apparent to those skilled in the art, however, that these examples are provided to further illustrate the present invention, and the scope of the present invention is not limited thereto.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other features and advantages of the present invention will become more apparent by describing in detail preferred embodiments thereof with reference to the attached drawings in which: It is possible to quote the above. In the following detailed description of the principles of operation of the preferred embodiments of the present invention, it is to be understood that the present invention is not limited to the details of the known functions and configurations, and other matters may be unnecessarily obscured by the present invention. A detailed description thereof will be omitted.

1 is a block diagram of an automatic channel selection transmitter in accordance with an embodiment of the present invention.

The automatic channel selection transmitter 100 according to an exemplary embodiment of the present invention includes a communication unit 110 and a processing unit 120. And may further include a storage unit.

The communication unit 110 transmits a test signal to the representative receiver and receives a reply signal from the representative receiver.

More specifically, the communication unit 110 transmits a test signal to the representative receiver 130 in order to select a channel, and receives a return signal for the test signal from the representative receiver 130. When a communication channel to perform communication is selected, communication with other receivers is performed using the corresponding channel. The communication channel may be a channel for a town broadcasting. The communication can be performed using the channel, and the present invention can be applied to a case where a local target receiver is limited, such as a channel for a town broadcasting.

The processing unit 120 determines whether or not communication of the corresponding channel is possible by using the return signal, and selects a channel determined to be capable of communication as a communication channel.

More specifically, it is determined whether communication of the corresponding channel is possible by using the reply signal of the representative receiver 130. A channel determined to be capable of communication is selected as a communication channel. The communication unit 110 communicates with the receivers through the communication channel selected in the processing unit 120. [

The processing unit 120 may determine that communication is possible when there is no interference of the corresponding channel or when the reception strength is equal to or greater than a threshold value. It can be determined that communication is possible when there is no interference caused by the channel being used by other transmitters in the vicinity and the reception strength is equal to or higher than a threshold value enough to perform communication. The communicable threshold value may be set in advance.

The representative receiver 130 may be a receiver having the worst channel environment. The processing unit 120 uses transmission and reception of a test signal to determine whether or not communication of a channel is possible. When transmitting and receiving a test signal to all receivers that perform communication using the selected channel, there is a problem that it takes a long time. In order to solve this problem, only test signal transmission / reception with the representative receiver 130 is performed. At this time, the representative receiver 130 may be a receiver having the worst channel environment among the receivers to perform communication. It is possible to determine whether communication of the entire channel is possible by transmitting / receiving a test signal to / from a receiver having the worst channel environment.

The criteria for setting representative receiver 130 may be distance. Or when the signal strength is low due to a local environment such as mountains, it can be set according to the local environment.

When the representative receiver 130 is set on the basis of the distance, the representative receiver 130 may be divided into four directions of the transmitter, the east, the south, the north, or the eight directions to be the farthest receiver within the range. As shown in FIG. 2, the transmitters 200 are divided into four regions in the directions of east, west, north, and north. Receivers having the greatest distance from the transmitter 200 within the range are set as representative receivers 230, . The transmitter 200 performs communication with all the receivers 230 and 240 within the corresponding range when a channel through which communication is to be performed through transmission and reception of test signals with the representative receivers 230 is selected.

The representative receiver 130 transmits a test signal to all of the first receivers, confirms the time and position at which the reply signal is received, sets the representative receiver by giving the order from the rear to the receiver with the latest return time according to the position have.

The number of representative receivers 130 may vary depending on the number of receivers, the distance or area of the range to be communicated, or the signal strength depending on the characteristics of the area or the transmitter, and the time May be considered. Or may be preset by the user.

The processing unit 120 may sequentially select other channels according to a preset order when it is determined that the corresponding channel can not be communicated or a situation where interference or communication is impossible during communication occurs. If it is determined that communication through the corresponding channel is impossible, for example, due to interference with a test signal, it is determined whether or not communication is possible with respect to another channel. In this case, And judges whether communication is possible or not. Also, if there is a situation where interference or communication can not be performed during communication, another channel is sequentially selected according to a preset order to determine whether communication is possible. The representative receiver 130 detects that the test signal is periodically transmitted or received to or from the representative receiver 130 to determine whether communication is impossible while the communication is being performed or transmits the signal to the representative receiver 130 .

The order of selecting the channels may be set to a channel selection combination between transmitters by calculating the number of channel selection cases with other adjacent transmitters. The channel selection order can be determined through a pre-appointment with other nearby transmitters in order to quickly resolve a communication failure due to channel interference. The number of channel selection cases with other adjacent transmitters may be calculated and set as a channel selection combination among the transmitters to be organized into a table and the corresponding information may be stored in the storage unit. It is possible to quickly select another channel by preventing overlapping of the next selected channels among adjacent transmitters.

The processing unit 120 may encrypt the test signal transmitted by the communication unit 110 to prevent an attack by a third party. At this time, encryption can be performed using the identifier of the transmitter 100. [ It is also possible to determine whether or not the reply signal received by the communication unit 110 is received from the representative receiver 130. [ To this end, the representative receiver 130 may re-encrypt the encrypted test signal using its identifier, and transmit the encrypted test signal to the transmitter 100. The processing unit 120 decodes the reply signal, It is determined whether the reply is correct and whether the reception from the representative receiver 130 is correct. For this, encryption using a public key and a secret key can be used.

FIG. 3 is a flowchart illustrating a method of selecting an automatic channel of a transmitter according to an embodiment of the present invention. FIGS. 4 and 5 are flowcharts of a method of selecting an automatic channel of a transmitter according to another embodiment of the present invention. The detailed description of each step corresponds to the detailed description of FIGS. 1 and 2, and a duplicate description will be omitted below.

Step 110 is a step of transmitting a test signal to the representative receiver.

More specifically, a test signal is transmitted to the representative receiver in order to confirm whether or not the channel can be communicated. The representative receiver is a receiver having the worst channel environment. The representative receiver may be a receiver that is farthest within the range, divided into four directions of the transmitter, the north, the south, and the south, and divided into eight directions.

Step 120 is a step of receiving a reply signal from the representative receiver. And receives a reply signal from the representative receiver in response to the test signal transmitted in step 110. [

Step 130 is a step of determining whether communication of the corresponding channel is possible by using the return signal.

More specifically, the controller 100 analyzes the reply signal received in step 120 and determines whether or not communication of the corresponding channel is possible. It can be determined that communication is possible when there is no interference of the corresponding channel or when the reception strength is equal to or higher than a threshold value.

Step 140 is a step of selecting a channel determined to be capable of communication as a communication channel. When the communication channel is selected, communication is performed with respect to all receivers, including the representative receiver, which intends to perform communication. The communication channel may be a channel for a town broadcasting.

Step 410 is a step of sequentially selecting different channels according to a predetermined order when it is determined that communication is impossible.

More specifically, when it is determined that the communication is not possible as a result of the determination of the communication availability of the channel, another channel is sequentially selected according to a preset order. The order of selecting the channel may be set to a channel selection combination between transmitters by calculating the number of channel selection cases with other adjacent transmitters.

Step 510 is a step of sequentially selecting different channels according to a predetermined order when there is a situation where interference or communication is impossible during communication.

More specifically, in the case where a communication channel is selected and a communication is interrupted or a communication is impossible during the communication, there is a need to change the communication channel. At this time, when changing to another channel, it is possible to sequentially select other channels according to a preset order. The order of selecting the channel may be set to a channel selection combination between transmitters by calculating the number of channel selection cases with other adjacent transmitters.

Embodiments of the present invention may be implemented in the form of program instructions that can be executed on various computer means and recorded on a computer readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The program instructions recorded on the medium may be those specially designed and configured for the present invention or may be available to those skilled in the art of computer software. Examples of computer-readable media include magnetic media such as hard disks, floppy disks and magnetic tape; optical media such as CD-ROMs and DVDs; magnetic media such as floppy disks; Magneto-optical media, and hardware devices specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like. Examples of program instructions include machine language code such as those produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

As described above, the present invention has been described with reference to particular embodiments, such as specific elements, and specific embodiments and drawings. However, it should be understood that the present invention is not limited to the above- And various modifications and changes may be made thereto by those skilled in the art to which the present invention pertains.

Accordingly, the spirit of the present invention should not be construed as being limited to the embodiments described, and all of the equivalents or equivalents of the claims, as well as the following claims, belong to the scope of the present invention .

Claims (14)

Transmitting a test signal to the representative receiver;
Receiving a reply signal from the representative receiver;
Determining whether communication of the corresponding channel is possible using the return signal; And
Selecting a channel determined to be capable of communication as a communication channel,
The representative receiver is a receiver having the worst channel environment,
As a result of the determination of the communication availability of the channel,
Further comprising the step of sequentially selecting other channels according to a preset order when it is determined that communication is impossible,
In order to select the channel,
Wherein the number of channel selection cases with other adjacent transmitters is calculated and set as a channel selection combination between transmitters and stored as a table. The method according to claim 1,
The representative receiver includes:
Wherein the transmitter is the farthest receiver within the range divided into four directions of east, west, north and north, or divided into eight directions around the transmitter. delete delete The method according to claim 1,
The method of claim 1,
And determining that communication is possible when there is no interference of the channel or when the reception strength is equal to or greater than a threshold value. The method according to claim 1,
Further comprising sequentially selecting other channels in accordance with a preset order when a situation where interference or communication is impossible during communication is generated. The method according to claim 1,
Wherein the communication channel is a channel for a town broadcasting. A computer-readable recording medium storing a program for causing a computer to execute the method according to any one of claims 1, 2, and 5 to 7. A communication unit for transmitting a test signal to the representative receiver and receiving a reply signal from the representative receiver; And
And a processing unit for determining whether or not communication of the corresponding channel is possible by using the return signal and selecting a channel determined to be capable of communication as a communication channel,
The representative receiver is a receiver having the worst channel environment,
Wherein,
When a channel is determined to be incapable of communication or a communication is impossible or a communication is impossible during communication, a different channel is sequentially selected according to a preset order,
In order to select the channel,
And a channel selection combination between transmitters is calculated by calculating the number of channel selection cases with neighboring transmitters and stored as a table. 10. The method of claim 9,
The representative receiver includes:
Wherein the transmitter is the farthest receiver within the range divided into four directions of east, west, north, and north, or divided into eight directions around the transmitter. delete delete 10. The method of claim 9,
Wherein,
And determines that communication is possible when there is no interference of the channel or when the reception strength is equal to or greater than a threshold value. 10. The method of claim 9,
Wherein the communication channel is a channel for town broadcasting.

KR1020160016024A 2016-02-12 2016-02-12 Auto channel selecting and changing method for village broadcasting appatus KR101806482B1 (en)

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KR101806482B1 true KR101806482B1 (en) 2017-12-07

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101563890B1 (en) * 2014-06-23 2015-10-28 세기미래기술 주식회사 Remote announcing system using by walkietalkie with improved crosstalk isolation and the control method thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101563890B1 (en) * 2014-06-23 2015-10-28 세기미래기술 주식회사 Remote announcing system using by walkietalkie with improved crosstalk isolation and the control method thereof

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