KR101746755B1 - Heterogeneous network automatic switch router considering communication quality status and priority and control method thereof - Google Patents

Abstract

Disclosed is a heterogeneous network automatic switching router and a control method therefor, which consider a communication quality state and a priority. When two or more types of wireless communication are connected, the heterogeneous network automatic switching router of the present invention performs a Syn scan or a ping test, including a server, Received Power, and RSRP) to compare the quality of the call and compare the quality of the call. By selecting the communication to be connected first, it is possible to switch to another communication depending on the status of the connected wired / There is an effect that can be.

Description

TECHNICAL FIELD [0001] The present invention relates to a heterogeneous network automatic switchover router and a control method thereof,

The present invention relates to a router, and more particularly, to a communication router for automatically switching a connection between a wired communication network and a plurality of wireless mobile communication networks according to a communication quality state and a control method thereof.

The development of communication technology is also used in the election field and is essential for the job of confirming and voting the ballot in the operation of the pre-polling stations.

According to the revised public election law amended in 2012, voters are allowed to vote at any designated absentee polling place for two days from the fifth day before the election day, which is the absentee voting period, For this purpose, a system was established in which pre-voting is enabled by issuing and issuing voting ballots for the electorate anywhere in the premises where the pre-polling stations are installed, to be. In order to realize this, the pre-polling stations are provided with wired / wireless communication equipment that uses a wired communication network as a main network and a wireless communication network as a secondary network. However, due to the worsening of the communication facilities of the pre- There is a problem that wireless network communication failure occurs due to a wireless communication environment or the like.

In order to overcome the communication obstacle in the wired network, the Central Election Management Committee has established a separate communication line for each preliminary polling station, which is a preliminary voting network. However, this limits the flexibility of preliminary polling stations, And the additional cost is incurred.

In addition, since the pre-polling stations are scattered all over the country, the quality of the wireless communication network depends on the characteristics of each region. Although the mobile communication company provides the wireless network service through the nationwide network, , There is a problem that there is a pre-polling area where the wireless network can not be used as a backup network. In case of a failure of a wired network, it is necessary to switch to a wireless network. However, in the case of a product equipped with a wireless modem that is not suitable for the region, a failure occurs in the operation of the wireless network. It is necessary to supplement it.

Also, wired / wireless communication equipment supporting wired network and wireless network is a product which is certified by mobile communication company. Wired network and wireless network recommended by mobile communication company are operated by wired network or wireless network, This operation terminates the connection to the wireless network, and terminates the connection to the wired network when the wireless network is used. Accordingly, in order to check the connection state of the wired network during the operation of the wireless network, for example, the wireless network is temporarily disconnected and then the wired network is operated to check the connection status. Therefore, it is impossible to provide an uninterrupted wired / wireless communication environment.

In addition, it should be supported to increase voter turnout and voting in voter blind voting in prefecture where there are frequent public facilities and frequent passengers. However, in the case where the election council is not directly connected to the wired communication network, There is a lack of safety and security in operating the pre-polling stations.

KR Patent Publication No. 10-1628996 (June 06, 2016)

In order to solve the above-mentioned problems, the present invention provides a heterogeneous network automatic switching router and a heterogeneous network automatic switching router considering a communication quality state and a priority, which can automatically switch a connection between a wired communication network and a target system from a plurality of wireless mobile communication networks, And a control method therefor.

In order to solve such a problem, in a heterogeneous network automatic switching router in which any one of the connected heterogeneous networks of the present invention is controlled to be connected, the presence or absence of a connection failure is detected by a new scan Sync scan or ping test and measures and compares the strength and the call quality of the wireless network with reference signal received power (RSRP). If the call quality of two or more wireless communications is the same And selecting a communication to be connected with the highest priority according to a user's preference.

When the wired communication is connected, the automatic switching router performs a syn scan or a ping test to determine whether there is a connection failure of the wired communication, including a server, The Syn scan checks the connection failure according to the response (0 or 1) from the target communication network, and the ping test sets the waiting time limit of each response to 2 sec. If it is determined that the link up / down is a link down, it is determined that the connection is short-circuited.

When the wired communication is judged to be a connection failure or a short circuit, the automatic switching router connects the wired communication with the highest priority communication selected during the wireless communication, when wired communication and two or more wireless communication are concurrently connected, .

If it is determined that the wired communication is restored, the automatic switching router automatically changes the connection to be connected to the wired communication. When the wired communication is not restored, Connect automatically by communication.

The automatic switching router connects to the highest priority wireless communication selected during the wireless communication when the wired communication is not connected and two or more wireless communication are concurrently connected, If it is judged that a failure has occurred, it is connected to the radio communication in the next lane.

Meanwhile, a control method of a heterogeneous network automatic switching router for controlling any one of a heterogeneous communication network connected to a wired communication and two or more wireless communication is selected, the method comprising the steps of: (a) determining whether wired communication is available in the automatic switching router (B) if the wired communication is available in the step (a), performing the communication by connecting to the wired communication, (c) checking the quality of the connected wired communication and judging that there is an abnormality in the communication quality (D) the automatic switching router accesses the wireless communication of the highest quality determined in the step (c) to perform wireless communication; (e) When the router detects that the communication quality of the wired communication is restored to its normal state while the wireless communication is being performed, the router accesses the wired communication to perform communication (F) if it is determined in step (e) that the communication quality of the wired communication is not restored to normal and that a failure has occurred in the connected wireless communication, performing the communication by accessing through the lane of wireless communication and g) if the wired communication is determined to be returned to normal during the connection to the wireless communication in the lane in the step (f), performing the communication by connecting to the wired communication and performing communication.

Therefore, according to the heterogeneous network automatic switching router and the control method thereof, considering the communication quality state and priority of the present invention, when switching to the wireless mobile communication network due to a failure of the wired communication network, there are a plurality of disadvantages limited to the single wireless mobile communication network so far There is an effect that the mobile station can be selected by comparison in the wireless mobile communication networks.

According to the heterogeneous network automatic switching router and the control method thereof, considering the communication quality state and the priority order of the present invention, if a failure or a communication quality problem arises again while using the wireless mobile communication network, However, it is possible to switch to the next-generation wireless mobile communication network, so that double security can be achieved.

According to the heterogeneous network automatic switching router and the control method considering the communication quality state and priority of the present invention, the conventional apparatuses are operated only in a place where the central election management committee can be connected to the wired communication network However, it is possible to strengthen the security of access to the network through the dual configuration of the wireless mobile communication network, and it is possible to operate the preliminary polling place even in the movable facilities. Also, in the hospitals, industrial complexes, schools, military bases and island residents, Voters in the zone will be able to consider voting participation.

FIG. 1 is a conceptual diagram of a heterogeneous network automatic switching router that takes into consideration the communication quality state and priority of the present invention according to an embodiment of the present invention; FIG.
2 is a detailed configuration diagram of an automatic switching router according to an embodiment of the present invention,
And
3 is a flowchart illustrating a method of controlling a heterogeneous network automatic switchover router in consideration of a communication quality state and a priority according to an embodiment of the present invention.

It is to be understood that the words or words used in the present specification and claims are not to be construed in a conventional or dictionary sense and that the inventor can properly define the concept of a term in order to describe its invention in the best possible way And should be construed in light of the meanings and concepts consistent with the technical idea of the present invention.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise. It should be noted that the terms such as " part, "" module, " .

It is to be understood that the term "and / or" throughout the specification includes all possible combinations from one or more related items. For example, the meaning of "first item, second item and / or third item" may be presented from two or more of the first, second or third items as well as the first, second or third item It means a combination of all the items that can be.

Identification codes (e.g., a, b, c, ...) in each step throughout the specification are used for convenience of description, and the identification codes do not limit the order of each step, Unless the context clearly states a particular order, it may take place differently from the stated order. That is, each step may occur in the same order as described, may be performed substantially concurrently, or may be performed in reverse order.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a conceptual diagram of a heterogeneous network automatic switchover router considering a communication quality state and a priority order according to an embodiment of the present invention. As shown in FIG. 1, the heterogeneous network automatic switchover router 100 of the present invention includes: When a failure occurs in the wired communication network of the pre-polling station 210 and the central election management committee 220 interposed between the management board 220 and the pre-polling station 210, the wireless communication network is switched to the wireless mobile communication network, If a failure occurs in the wireless mobile communication network by configuring two or more possible wireless mobile communication networks, it is possible to connect to the wireless mobile communication network in the lane so that the communication between the central election management committee 220 system and the pre- .

In addition, the central election committee 220 system and the pre-polling station 210, which are not directly connected to the wire communication network, can connect a plurality of wireless mobile communication networks and operate a pre-polling station through the best communication network.

In addition, the central election management committee 220 is connected to the polling place 240 through the communication network 230.

Hereinafter, the wireless mobile communication network refers to an ordinary mobile communication network and will be briefly referred to as wireless communication for convenience of explanation.

The automatic switching router 100 controls the communication through the wired / wireless communication network connected between the pre-polling station 210 and the central election management committee 220 so as to communicate with the communication network with the best communication quality.

To this end, the automatic switching router 100 of the present invention includes a wired communication module 120 for confirming whether or not the wired communication is connected and controlling communication, a wireless communication module 130 for checking the presence / A display unit 140 for displaying a connection state and a communication quality of each communication, and an MCU (MICROPROCESSOR) 110 for controlling each component.

Referring to FIG. 2, a detailed configuration of an automatic switching router according to an embodiment of the present invention will be described. The MCU 110 controls the physical connection state of the wired communication module 120 and the wireless communication module 130, The control unit 112 controls the communication interface between the determining unit 111 and the at least one LAN 190 and controls the contents to be displayed on the display unit 140 and the operation of the power control module 170 and the battery 180 ).

The power supply control module 170 controls the external input power to generate and supply power to the components of the system. The battery 180 is charged by the power control module 170, Lt; / RTI > to each component.

In addition, the control unit 112 may include a communication interface 150 so that the control unit 112 can be remotely controlled.

The determination unit 111 is operated to determine a physical connection state and a communication quality between the wired communication module 120 and the wireless communication module 130. The physical connection is performed through a ping test, The logical connection for measuring the connection, that is, the call quality, is performed through a TCP syn scan.

That is, when two or more wireless communications are connected, the determination unit 111 performs a Syn scan or a ping test on the presence or absence of a wireless communication connection failure including a server, (RSRP) to compare the quality of the call and select the communication to be connected with the highest priority, store the list in the memory 160 as a DB, read the corresponding data if necessary, and transmit the highest quality communication To be connected.

In addition, when the wired communication is connected, the determination unit 111 determines whether there is a connection failure of the wired communication by performing a Syn scan or a ping test, And compares the communication quality status of the wired communication and stores the corresponding data in the memory 160 and can read and use the data if necessary.

In the present embodiment, wired communication is illustrated as being connected by a single communication, but it is needless to say that two or more wired communication may be performed to determine and manage the connection order of wired communication.

In this case, for example, in the case of a ping test, ranking can be made between wired communication by ranking each response time.

Also, the determination unit 111 determines the connection failure according to the response (0 or 1) from the target communication network in the Syn scan, and repeats the ping test three times with the waiting time limit of 2 seconds for each response It is determined that the connection is broken, and if the link up / down is determined to be a link down, it can be determined that the connection is short-circuited.

The Syn scan is also referred to as TCP Half Open Scan, and is a method of waiting for a response by transmitting a SYN packet to a port of a specific communication system.

If the port is open for access (if it can communicate with the server), it responds with a SYN + ACK packet. If it is closed (if it can not communicate with the server), it responds with an RST + ACK packet.

That is, when a connection is attempted using a TCP SYN packet and the port is opened, the TCP connection method is a scanning technique in which normal TCP 3-way handshaking is not fixed by forcibly terminating the connection (RST) to the response packet SYN + ACK It is fast, and it is possible to check whether firewall, IPS / IDS, UTM port is blocked.

This is because the ping method can only check whether the server is physically connected (powered on), so that the SYN Scan can check whether the server can provide logical service (system preparation).

Also, the RSRP measures the power of the received reference signal and selects the highest priority network based on the resource element carrying the reference signal among the resource elements included in the time-frequency resource area.

Reference Signal Received Power (RSRP) refers to the reference signal received power and compares the call quality with the power of the reference signal received at the terminal. The unit is expressed in dBm (absolute size).

RSRP can be measured based on a resource element that carries a reference signal among the resource elements included in the time-frequency resource region, and is a power measurement average value of a reference signal (RS) and a loaded resource element (RE) The reference value of the reselection, and the path-loss according to the channel connection state can be estimated, so that it can be used as the communication quality comparison value.

The pathloss is determined as "RS Power (output in system) -RSRP (terminal measurement power) ".

In addition, when the communication quality of the two wireless communications is the same, the determination unit 111 preferably selects a priority communication so that the wireless communication device specified by the user is selected first, thereby selecting the communication to be the highest priority.

If it is determined that wired communication is connected through the communication module 120 and two or more wireless communications are concurrently connected through the wireless communication module 130, the determination unit 111 determines whether the wireless communication module 120 is connected to the central election management committee 220 When the wired communication module 120 determines that the wired communication is a connection failure or a short circuit, the wired communication module 120 selects one of the wireless communication networks connected to the wireless communication module 130 To connect to the highest priority network.

The connection failure and the short circuit of the wired communication at this time are performed by a Syn scan or a ping test including the server as described above and whether or not the connection is faulty is determined by link up and the downlink quality of the radio communication is compared with the presence or absence of a connection failure by a Sync scan or a ping test. The reference signal received power (RSRP) To determine the ranking by comparing the call quality.

In addition, when the determination unit 111 determines that the wired communication is restored during the connection with the highest priority wireless communication and performs communication, the determination unit 111 automatically changes the connection to be connected to the wired communication.

If the failure occurs during the connection to the highest priority wireless communication, the determination unit 111 switches to wired communication if the wired communication is restored. If the wireless communication is not restored, .

If the wired communication is not connected and two or more wireless communications are connected at the same time, the determination unit 111 accesses the highest priority communication selected during the wireless communication, If it is determined that a failure has occurred, control is performed to connect to the communication network of the next lane.

A control method of the automatic switching router having the above-described configuration will be described with reference to the drawings.

3 is a flowchart illustrating a method of controlling a heterogeneous network automatic switchover router in consideration of a communication quality state and a priority according to an embodiment of the present invention.

As shown in the figure, a control method of a heterogeneous network automatic switchover router that selects one of a heterogeneous communication network connected to a wired communication and two or more wireless communication is controlled by a pre-polling station 210 ) And the central election management committee 220 communicate with each other.

In order to do this, the determination unit 111 firstly checks the call quality of one or more wired communications connected to the wired communication module 120 (S110).

Preferably one or more wired communications, each of which can be compared in quality and stored in the memory 160 as a list.

If it is determined in step S110 that the wired communication is available (S120), the pre-polling station 210 and the central election management committee 220 are connected to perform wired communication so as to perform communication (S130 To S140).

At this time, it is preferable to connect to the wired communication having the best quality of communication among two or more wired communication.

If it is determined in step S120 that the connected wired communication is unavailable, it is determined whether the power of the automatic switching router 100 is turned off. If the power is off, the communication connection is terminated (S210).

If it is determined in step S210 that the power source is connected, the flow advances to step S220 for connection via wireless communication.

If it is determined in step S140 that the communication quality of the wired communication is still poor (S150), if the connection is good, the connection is maintained. If it is determined that the communication quality is poor (S151) The process proceeds to step S220.

That is, in step S220, the communication quality of the connected wireless communication is compared.

If the highest priority wireless communication is determined in step S220, the determination unit 111 accesses the pre-polling station 210 and the central election management committee 220 so that the pre-polling station 210 and the central election management committee 220 can communicate with each other through the wireless communication.

That is, in step S230, the wireless communication is performed when the wireless communication is connected to the highest priority (S240), and the determination unit 111 continuously checks the communication quality of the wired communication while performing the highest priority wireless communication (S260).

 If it is determined that there is no abnormality in the quality of the wireless communication, the connection is maintained. If there is an abnormality (S251), the wireless communication is accessed It is connected to step S210.

On the other hand, if it is determined in step S260 that the wired communication has been restored (S261), the connection is made to step S120 for connection via wired communication.

If the quality of the connected wireless communication is abnormal in step S251, step S220 is repeated to access another wireless communication.

That is, in step S220, the wireless communication is re-determined to switch to the lane of the line (S270).

In addition, the determination unit 111 connects to the lane-based wireless communication and performs communication (S280), and continuously checks the quality of the wireless communication (S281).

In step S281, if the quality of the wireless communication is checked and an error occurs (S282), the process goes to step S220 for connection to the next lane wireless communication.

Meanwhile, in step S280, the quality of the wired communication should be continuously checked while performing the wireless communication (S291).

If it is determined in step S291 that the quality of the wired communication has been restored, a connection is made to step S120 to perform wired communication in order to perform communication in wired communication.

That is, the automatic switching router of the present invention first determines whether connection via wired communication is possible, and when wired communication is available, it connects to wired communication and controls the pre-polling station 210 and the central election management committee 220 to communicate do.

Also in this case, the quality of the connected wired communication is checked, and if it is determined that an abnormality occurs in the communication quality, the quality rank of the connected wireless communication is determined so as to switch to the connected wireless communication and controlled to be connected to the highest quality wireless communication .

In addition, even when a connection to a wireless communication is established, the quality of the wired communication is continuously measured and if it is detected that the quality of the wired communication is restored to normal, the connection of the wireless communication is controlled so as to be connected to the wired communication, .

If it is determined that the communication quality of the wired communication is not restored to the normal state and a failure occurs in the connected wireless communication, the communication is performed by accessing the lane of the wireless communication.

At this time, the quality of the wired communication is continuously checked, and when the wired communication is returned, the wired communication is made, and when an abnormality is found in the wired communication, the wired communication is connected to the lane wireless communication. And controls to perform communication by accessing by wire communication.

As described above, in the automatic switching router of the present invention, when the wired connection is established, the wired connection is once made, the connection quality of the wired line is continuously checked, and if there is an error, the automatic switching router is connected by the highest priority wireless communication. The communication quality of the wired communication is restored to the wired communication when the quality of the wired communication is restored at any time so that the best quality of the communication can be maintained.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art.

100: Automatic switching router 110: MCU
111: Judgment section 112:
120: wired communication module 130: wireless communication module
140: Display unit 150: Communication interface
160: memory 170: power control module
180: Battery 210: Pre-polling place
220: Central Election Commission 230: Network
240: Polling Place

Claims (9)

delete A heterogeneous network automatic switching router for selecting one of different heterogeneous networks to be connected,
The automatic switching router
When wired communication and two or more wireless communication are concurrently connected, wired communication is prioritized, and when it is determined that the wired communication is a connection failure or a short, wireless communication with the highest quality selected among wireless communication is selected, When the wired communication is not restored, the wired communication is automatically connected to the wired communication when it is determined that the wired communication is restored,
The presence or absence of a connection failure of the wire communication is performed by a Syn scan and a ping test including a server and whether or not the connection is short is performed by link up / down to compare the communication quality status of the wired communication ,
The presence or absence of the connection failure of the wireless communication is performed by a Syn scan and a ping test including the server and the strength and the call quality of the wireless network are measured by the reference signal received power (RSRP) And a communication quality state and a priority for selecting a communication to be connected with a highest priority according to a user's preference when two or more wireless communication qualities are equal.
The method of claim 2,
The Syn scan determines the connection failure according to the response (0 or 1) from the target communication network. If the ping test is repeated 3 times with the standby time limit of 2 seconds for each response, up / down is a heterogeneous network automatic switching router that takes into consideration the communication quality status and priority that it determines that the connection is disconnected when it is determined as a link down.
The method of claim 2,
The RSRP
A heterogeneous network automatic switching router that takes a communication quality state and a priority to select a priority communication network by measuring the power of a received reference signal while measuring based on a resource element carrying a reference signal among resource elements included in the time- .
delete delete delete delete A control method of a heterogeneous network automatic switching router for controlling a connection between a wired communication and a heterogeneous communication network in which two or more wireless communication are connected,
(a) connecting wired communication in a priority order when wired communication and two or more wireless communication are concurrently connected;
(b) judging the presence of a connection failure of the wired communication by a Syn scan and a ping test including the server, and performing link up / down to judge whether the wired communication is short-circuited If it is determined that an abnormality occurs in the communication quality by comparing the communication quality status of the wired communication, the presence or absence of the connection failure of the connected wireless communication is performed by a Syn scan and a ping test including the server, Measuring a strength and a call quality of a wireless network using a received signal power (RSRP) to determine a quality rank of the connected wireless communication by comparing the call quality;
(c) the automatic switching router accessing the wireless communication of the highest quality determined in the step (b) and performing wireless communication;
(d) when the automatic switching router detects that the communication quality of the wired communication is restored to the normal state while the wireless communication is being performed, performing the communication by connecting to the wired communication;
(e) if it is determined in the step (d) that the communication quality of the wired communication is not restored to normal and that a failure has occurred in the connected wireless communication, performing the communication by accessing the lane of the wireless communication;
(f) connecting to a wired communication and performing communication when it is determined that the wired communication is restored to normal during a connection to a wireless communication in the lane in the step (e);
And a priority of the communication quality of the heterogeneous network.

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