KR101593822B1

KR101593822B1 - Apparatus for providing communication service, control method thereof, recording medium for recording program for executing the control method, application saved in the recording medium for executing the control method being combined with hardware

Info

Publication number: KR101593822B1
Application number: KR1020140116231A
Authority: KR
Inventors: 윤준용; 김대희; 허성준; 김중섭
Original assignee: 주식회사 엘지유플러스
Priority date: 2014-09-02
Filing date: 2014-09-02
Publication date: 2016-02-15

Abstract

The present invention relates to an apparatus for providing a communication service, a control method thereof, a recording medium recorded with a program for executing the same, and an application combined with hardware and saved therein for executing the same. According to the present invention, the control method of an apparatus for providing a communication service comprises the steps of: receiving a visual synchronization signal from a synchronization server; comparing the received visual synchronization signal with an internal clock generated by a previously disposed clock generation unit to synchronize the internal clock with the visual synchronization signal; using the internal clock after the synchronization to generate a reference frequency until reaching a prescribed synchronization server reconnection time point; and using the generated reference frequency to provide a communication service.

Description

[0001] The present invention relates to a communication service providing apparatus, a control method thereof, a recording medium on which a program for executing the control method is recorded, and an application stored in the medium in combination with hardware for executing the control method, RECORDING MEDIUM FOR RECORDING PROGRAM FOR EXECUTING THE CONTROL METHOD, APPLICATION SAVED IN THE RECORDING MEDIUM FOR EXECUTING THE CONTROL METHOD BEING COMBINED WITH HARDWARE}

The present invention relates to a communication service providing apparatus, a control method thereof, a recording medium on which a program for executing the control method is recorded, and an application stored in a medium for executing the control method in combination with hardware, A communication service providing apparatus for synchronizing an internal clock by communicating with an external synchronization server, a control method therefor, a recording medium on which a program for executing the control method is recorded, and an application .

The mobile communication network is composed of a plurality of communication service providing apparatuses.

Here, the communication service providing device refers to a device that communicates with a communication terminal carried by a user to provide a wireless communication service, for example, a base station, a repeater, and the like.

Such communication service providing apparatuses generate a reference frequency based on an internal or external clock and provide a wireless communication service using the generated reference frequency. In order to increase the frequency accuracy of each communication service providing apparatus, time synchronization ) Should be made.

For example, in case of outdoor repeaters, time synchronization can be performed using GPS (Global Positioning System). In contrast, indoor equipment is not easy to construct outdoor GPS environment. Therefore, .

For example, maintains a connection with a synchronization server that provides a time synchronization signal, and generates an internal clock that is accurately synchronized using a time synchronization signal received from the synchronization server.

Master-slave communication is performed between the synchronization server and each communication service providing device. Since the number of slaves that a single master can maintain connection is limited, a master and a slave maintain a connection in a conventional manner, There is a problem that the number of slaves that can be used by connecting to the network is very small.

Published Patent No. 10-2005-0113365

It is an object of the present invention to provide a communication service providing apparatus using an external server and an internal clock, a control method therefor, and a control method therefor to execute a control method A recording medium on which a program is recorded, and an application stored in the medium in combination with the hardware to execute the control method.

According to an aspect of the present invention, there is provided an apparatus for providing a communication service, including: a clock generator for generating an internal clock; A synchronization signal receiving unit for receiving a time synchronization signal from a synchronization server; A synchronization unit for synchronizing the internal clock with the time synchronization signal by comparing the time synchronization signal received by the synchronization signal reception unit with the internal clock; A frequency generator for generating a reference frequency by using an internal clock generated by the clock generator until a predetermined synchronization server reconnection point is reached by the synchronization unit; And a communication service providing unit for providing a communication service using the reference frequency generated by the frequency generating unit.

According to another aspect of the present invention, there is provided a control method for a communication service providing apparatus, including: receiving a time synchronization signal from a synchronization server; Comparing the received time synchronization signal with an internal clock generated by the provided clock generation unit to synchronize an internal clock with the time synchronization signal; Generating a reference frequency using the synchronized internal clock until a preset synchronization server reconnection point is reached; And providing a communication service using the generated reference frequency.

As described above, according to the present invention, the server capacity (capacity of the communication service providing apparatus) of the synchronization server providing the time synchronization signal can be increased without additional cost, and when there is no time synchronization signal, , A more accurate and precise reference frequency can be generated.

1 is a functional block diagram of a communication service providing apparatus according to an embodiment of the present invention,
2 is a control flowchart of a communication service providing apparatus according to an embodiment of the present invention,
3 and 4 are comparative diagrams for comparing the conventional method and the method according to the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Hereinafter, embodiments of the present invention will be described in order to facilitate understanding of the present invention, and the present invention is not limited to these embodiments. In particular, the present invention can be configured by combining at least any one of individual components, individual functions, or individual steps included in each embodiment.

In the present embodiment, the communication service providing apparatus 100 refers to a device that provides a wireless communication service by communicating with a communication terminal carried by a user. For example, the communication service providing apparatus 100 may correspond to a base station, .

The communication service providing apparatus 100 according to an embodiment of the present invention includes a clock generating unit 110, a synchronization signal receiving unit 120, a synchronization unit 130, a frequency generating unit 140, a communication service providing unit 150, A setting unit 160, a calculation unit 170, and an internal clock correction unit 180. [

The clock generating unit 110 generates an internal clock of the communication service providing apparatus 100. The internal clock thus generated can be used for digital operation of the communication service providing apparatus 100, Is used in the digital device corresponds to the known technology, and thus a detailed description thereof will be omitted.

Also, the generated internal clock may be used to generate a predetermined reference frequency, and a detailed description thereof will be given later.

The clock generating unit 110 may include an oscillator, for example.

The synchronization signal receiving unit 120 performs a function of receiving a time synchronization signal from the synchronization server.

Here, the synchronization server communicates with at least one communication service providing apparatus 100 and transmits a time synchronizing signal to each communication service providing apparatus 100, for example, between the synchronization server and the communication service providing apparatus 100, Communication according to the protocol can be performed.

The synchronization unit 130 performs a function of synchronizing the internal clock with the time synchronization signal by comparing the time synchronization signal received by the synchronization signal reception unit 120 with the internal clock. Here, synchronizing the internal clock with the time synchronizing signal not only means adjusting the "time" information recognized by the communication service providing apparatus 100 to the synchronizing server, but also controlling the clock generating unit 110 to adjust the frequency of the internal clock And the like.

The synchronization server re-connection point means a point of time to reconnect to the synchronization server, and may be set to a time unit or a day unit.

For this, the setting unit 160 can automatically set the synchronization server reconnection point by referring to the date corresponding to the predetermined device information.

For example, there may be a unique serial number distinguished for each communication service providing apparatus 100. When the last number of the unique serial number is '1', the setting unit 160 sets '1' (Date), and when the last number of the unique serial number is '2', '2 days' can be set to the synchronization server reconnection time (date).

The synchronization unit 130 receives the time synchronization signal again from the synchronization server when the synchronization server reconnection time is reached, and resynchronizes the internal clock.

The frequency generator 140 generates a reference frequency using an internal clock generated by the clock generator 110 until the synchronizer 130 reconnects the synchronizer 130 .

In order for the frequency generator 140 to generate a precise reference frequency, the phase of a PLL (Phase Locked Loop) needs to be adjusted. In this case, the internal clock after synchronization is used. Since the correlation between the PLL and the precision of the internal clock corresponds to the known technique, a detailed description will be omitted.

The communication service providing unit 150 performs a function of providing a communication service using the reference frequency generated by the frequency generating unit 140. Here, the reference frequency may correspond to, for example, 800 Mhz in the case of the LTE communication service, and the communication service provider 150 may communicate with the user terminal using a frequency that can avoid the interference of the adjacent cell based on the reference frequency will be.

Therefore, the reference frequency must be precisely or precisely generated so that the actually used frequency can be accurately set.

The calculating unit 170 calculates an error by comparing the time synchronizing signal with the internal clock, and calculates a detailed correction value using the calculated error. For example, the calculator 170 may compare the current time information included in the time synchronization signal with the current time information according to the internal clock, calculate the error, and calculate the detailed correction value using the calculated error .

Here, the detailed correction value can be calculated in consideration of the detailed correction time and the synchronization server reconnection time point. For example, if the synchronization server reconnection interval is 1 day, the previously calculated error is +24 seconds, and the detailed correction time interval is 1 hour, the detailed correction value is +1 second.

The internal clock correction unit 180 corrects the internal clock by the detailed correction value at every predetermined detailed correction time after the internal clock synchronization by the synchronization unit 130. [

Referring to the above example, the internal clock correction unit 180 corrects the internal clock by +1 second every hour.

2 is a control flowchart of a communication service providing apparatus 100 according to an embodiment of the present invention.

The communication service providing apparatus 100 receives the time synchronization signal from the synchronization server (step S1).

An error of the internal clock is calculated for the received time synchronization signal (step S3), and a detailed correction value is calculated using the calculated error (step S5).

The communication service providing apparatus 100 adjusts and synchronizes the internal clock by the calculated error (step S7).

The communication service providing apparatus 100 corrects the internal clock every time it reaches the detailed correction time (step S11) (step S13) until it reaches the synchronization server reconnection point (step S9) (Step S9), reconnects to the synchronization server, receives the time synchronization signal (step S1), and re-executes the internal clock synchronization process (step S7).

According to the present embodiment, the number of communication service providing apparatuses 100 that can be accommodated in one synchronization server can be considerably increased, which can be clearly understood by comparing FIG. 3 and FIG.

FIG. 3 is a diagram illustrating a synchronization server, that is, a master 1000 communication service providing apparatus 100, that is, a slave continuously connects and processes synchronization in accordance with a conventional method.

Meanwhile, FIG. 4 illustrates a process of connecting to a master and performing synchronization at a point in time when 10 groups including 1000 slaves are distinguished according to the present invention.

For example, on the first day, group # 1 connects to the master to perform time synchronization. On the second day, group # 2 connects to the master to perform time synchronization. On the last 10 days, group # Synchronization is performed, and on the 11th day thereafter, group # 1 accesses the master again to perform time synchronization.

In this case, the number of slaves that can be accommodated by one master can be increased ten times as compared with that in FIG.

When the group of the communication service providing apparatuses 100 circularly connects to the synchronization server, the server capacity of the synchronization server can be increased.

Needless to say, the process of performing each of the above-described embodiments can be performed by a program stored in a predetermined recording medium (for example, a computer readable medium).

The present invention is not limited to the above-described specific embodiments, and various modifications and changes may be made without departing from the gist of the present invention. It is to be understood that such variations and modifications are intended to be included in the scope of the appended claims.

100: communication service providing apparatus 110: clock generating unit
120: synchronous signal receiving unit 130:
140: frequency generator 150: communication service provider
160: Setting unit 170:
180: Internal clock correction unit

Claims

(a) receiving a time synchronization signal from a synchronization server;
(b) comparing the time synchronization signal received in the step (a) with an internal clock generated by the provided clock generation unit to synchronize an internal clock with the time synchronization signal;
(c) generating a reference frequency by using an internal clock synchronized in the step (b) until a predetermined synchronization server reconnection point is reached;
(d) providing a communication service using the reference frequency generated in the step (c)
The step (b) includes the steps of: calculating an error by comparing the time synchronization signal with an internal clock; And calculating a detailed correction value using the calculated error,
Further comprising the step of, after the internal clock synchronization in the step (b), correcting the internal clock by the detailed correction value at each predetermined detailed correction time point.

The method according to claim 1,
Further comprising the step of re-synchronizing the internal clock by receiving the time synchronization signal again from the synchronization server when the synchronization server reconnection time has been reached.

The method according to claim 1,
Wherein the synchronization server reconnection point is automatically set with reference to a date corresponding to the predetermined device information.

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A computer-readable recording medium storing a program for executing the method according to any one of claims 1 to 3.

13. An application stored in a medium for executing the method of any one of claims 1 to 3 in combination with hardware.

A clock generator for generating an internal clock;
A synchronization signal receiving unit for receiving a time synchronization signal from a synchronization server;
A synchronization unit for synchronizing the internal clock with the time synchronization signal by comparing the time synchronization signal received by the synchronization signal reception unit with the internal clock;
A frequency generator for generating a reference frequency by using an internal clock generated by the clock generator until a predetermined synchronization server reconnection point is reached by the synchronization unit;
A communication service providing unit for providing a communication service using the reference frequency generated by the frequency generating unit;
A calculation unit for calculating an error by comparing the time synchronization signal with an internal clock and calculating a detailed correction value using the calculated error;
And an internal clock correcting unit for correcting the internal clock by the detailed correction value at each predetermined detailed correction time after the internal clock synchronization by the synchronizing unit.

8. The method of claim 7,
Wherein the synchronization unit receives the time synchronization signal again from the synchronization server when the synchronization server reconnection time is reached, and resynchronizes the internal clock.

8. The method of claim 7,
Further comprising a setting unit configured to automatically set the synchronization server reconnection point of time by referring to a date corresponding to the predetermined device information.

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