KR101628996B1 - tripling network express gateway system which automatically recognize wire and wireless communication for IoT - Google Patents

Abstract

The present invention relates to a triple network express gateway system to automatically recognize wired and wireless communications used in the business fields of Internet of things (IoT) to which a basic communication interface for sensor interworking, a high speed data service, a two-way communication, and a dual CPU, which can have a high CPU share and support a security function and open middleware, are applied. In order to provide a high-speed data service, an LTE communication or Giga Ethernet communication service is required, and for a gateway function and a bidirectional IoT service based on IEEE802.11n/ac WiFi, the development of a gateway management server (GMS) necessary for system management is performed to provide the function of a package form of a gateway and a server, as well as a device. Uplink dualization is the contents included in the present invention such that a stabilized one of a wireless network and a wired network can be automatically selected. A hardware engine-based high performance network system considering a minimum of CPU share is included through the design of open middleware (OSGi) that is a component structure based on embedded JAVA for implanting a software module according to specifications requested by a customer, and industrial equipment considering an outdoor installation environment.

Description

[0002] The triple network express gateway system, which automatically recognizes wire and wireless communication for IoT,

The present invention relates to a wired and wireless communication automatic recognition network triple-speeded high-speed gateway system for the Internet implementation of objects, more specifically, to perform high-speed data service and to perform uplink redundancy so as to automatically select a stable network among a wireless network and a wired network The present invention relates to a high-speed gateway system for a wired and wireless communication automatic recognition network for implementing Internet objects.

So far, the IoT implementation method has been implemented in a low speed wireless network or a simple IoT relay type in an Ethernet network by using a simple relay network. As such conventional technology, the home gateway apparatus according to Patent Publication No. 10-2006-0135187 includes a tuner for selecting a communication channel, a cable modem means, a data signal processing means for performing a TCP / IP communication interface, a serial communication interface And RS-232 processing means for providing the RS-232.
However, in 2G or 3G networks, there is a problem that normal communication can not be performed when high-capacity image information of HD, high-speed interface bi-directional communication for sensor interlocking, security function with high CPU occupancy rate and open middleware is applied. Therefore, in order to solve this problem, it is required to perform high-speed data service by automatically selecting a gigabit communication or an LTE radio network for high-speed data transmission, and automatically recognizing the existing communication network at the time of line disconnection, It is becoming an important issue in the IOT field. In addition, there is a problem that it is difficult to track the location of the vehicle in the case of the theft, such as an ATM device, which is mainly operated by wire, and also there is a problem in that a weight information sensor is mounted like a waste transportation vehicle to track a real- .
Since the sensor specifications for the Internet (IoT) implementation are required from conventional analog to video image streaming, there is a problem that smooth communication can not be achieved with existing 2G or 3G networks. To this end, the need for high-speed wireless communication and Gigabit Ethernet-class gateway systems capable of HD video service has increased.

In order to interoperate with sensors, a high-end gateway system is required not only for existing communication network interfaces but also for security applications requiring high-speed data service bi-directional communication and CPU occupation ratio, and various object internet supporting open middleware. Also, in order to provide high-speed data service, it is required to develop a system having a GMS (Gateway Management Server) function considering LTE interface, bi-directional communication for supporting Giga LAN and Wi-Fi based gateway, and managing the Internet. In order to increase the service reliability of these networks, stable network operation is required in any environment.

It provides a gateway system that can enhance the security function considering the vulnerability of the Internet to the security and provide the communication service for a certain time even when the external power is disconnected.
In addition, it provides a gateway system that can support high-speed data and reduce investment cost and operation cost by expanding service range.

1 is a block diagram of a giga-lan module in which an uplink is configured with an LTE module for high-speed bidirectional communication, high-quality image transmission, and large data transmission, and a wired network is selected according to system operation and operation. Link is redundant. In the environment where the LTE network or Giga Ethernet network can not be used, it includes a high-speed gateway function for providing an IoT network according to the usage environment through network triangulation by configuring a dedicated network module unit capable of operating in the existing 2G or 3G network.

FIG. 2 is a block diagram for implementing the above function in detail; in order to process high-speed big data, a bi-directional Tx and an Rx uplink need to be separated and implemented; In order to enhance the security function of the wireless network gateway, a conventional single CPU includes a dual-core CPU to solve the problem of slow data processing speed. In the present invention, LTE and giga LAN, WiFi 2.4G, WiFi 5G, a dedicated network block, a GPS block, and a serial port for managing system status can be configured. WiFi is 2.4GHz and 5GHz is a communication module part to check internal system upgrade or board operation status. It includes automatic firmware upgrade, configuration file change and download function in conjunction with system CPU. It also includes file transfer and reception functions in conjunction with WPAN and smartphone applications. The memory block has the system operation status, alarm, log reception and storage function. The power block includes a battery support function in consideration of a gateway installation environment, and thus, provides a function as a control server for a predetermined period of time in case of a power failure.

3 shows a network selection flowchart for selecting a normal network among three lines of an LTE block, an Ethernet line block, and a dedicated network block in the CPU. If all the lines are in normal operation according to network operation status, they can be selected first by LTE network. The communication port that can not be selected as the communication mode out of the above is configured as a triple configuration step without network collision by canceling the setting state.

 The following are the uplink tripled output characteristics;

     Sa = L1

     Sb = / L1 * L2 * / L3 + / L1 * L2 * L3

     Sc = / L1 * / L2 * L3

FIG. 4 is a flowchart illustrating an implementation method of the LTE network, an Ethernet network, and a dedicated network triangulation according to an embodiment of the present invention.

For the Internet service of objects, it provides the best function as the high-speed gateway system using the wired / wireless broadband network for rapid system change and high-speed data service from the existing 3G CDMA to 4G LTE. Considering the weakness of the Internet of things security, the security function is strengthened by installing VPN application in the gateway system.

The concept of simple data transmission due to the expansion of the internet market in the object can reduce the investment cost and the operation cost by expanding the service range by supporting bidirectional communication, image processing and high-speed data, and reducing initial investment and operating cost by converting existing low- There is an advantage to be made.

Even when the external power is disconnected, the battery built-in function provides communication service for a certain period of time.

M2M technology based on data communication also provides optimal gateway function suitable for M2M service type capable of high-capacity video and image transmission service.

1 is a diagram illustrating an example of an Ethernet network and an LTE network structure service according to an embodiment of the present invention;
FIG. 2 is an internal configuration view of a premium gateway terminal for automatic recognition of a Gigabit Ethernet network and an LTE network according to an embodiment of the present invention. FIG.
3 is a flowchart of automatic network selection according to an embodiment of the present invention;
4 is a diagram illustrating a specific network triangulation selection method according to an embodiment of the present invention.
5 is a detailed configuration diagram of a network triple control block;

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments.

1 is a block diagram of a premium gateway 200 network for wired and wireless automatic recognition according to the present invention. 1, a communication system applicable to the present invention can be connected to an LTE network, a private network (2G or 3G), or a Gigabit Ethernet network. In order to check the optimal network status, the CPU checks the hardware interface line connection status and determines the sending / receiving status of the data through the inter-module test to find the optimal port. At this time, it checks the connection status such as LTE network and Giga Ethernet port, and automatically selects an optimal port from among them. Among various sensor connections, the HD video signal is connected to the Giga Ethernet for large capacity signal processing and selects a structure suitable for connection with the upper end. The position sensor is used to provide GPS position information. It is intended to provide moving object information such as a vehicle or stolen equipment to a server. When the weight sensor is applied to a moving vehicle, the weight sensor is suitable for confirming a vehicle movement path for conveying a heavy object by providing the weight change and the movement path of the moving vehicle together with the GPS coordinates.

FIG. 1 includes not only a simple device but also a function of interworking between a gateway and a server by providing a high-speed data service in both directions as well as a basic communication interface for sensor interworking and a gateway function and a management function suitable for object Internet communication.

FIG. 2 is a block diagram of an apparatus for automatic recognition of Ethernet and LTE networks according to the present invention. In order to accomplish the object of the present invention, a dual-core CPU, a LTE block, a Giga Ethernet switch block and a Giga Ethernet LAN port, a WiFi 2.5GHz block, a Wifi 5GHz block, a CDMA block, a GPS block, Block.

The dual CPU (220) is a single CPU applied to existing router and gateway equipment, and performs functions suitable for data processing at a high speed in order to solve the communication difficulty by increasing the CPU load when applying VPN and other applications for IoT implementation.

The power unit 210 includes a function of supplying external power to the system by inputting external DC power, and the battery unit includes a function of supplying power required for system operation for a predetermined time when the external power is turned off. If the external power is cut off during the system operation, the power is transferred to the battery and the power required for the system is supplied for a predetermined time. This includes the function of facilitating the positioning because the on-the-go vehicles or ATM machines provide continuous GPS coordinate data to the server in case of stolen operation.

And includes a function of solving a weak security problem in IoT because it includes a network security function so that a security engine combining hardware and software is mounted by mounting a Giga Ethernet L2 switch 250 to efficiently protect against abnormal packets. In addition, it has a function to monitor traffic information in real time, so that if a problem occurs, it protects the network from external attacks by blocking the port to the CPU and automatically switches the connection to the LTE network when the port is disconnected .

The LTE block 230 is a structure suitable for transmitting crawler data such as image information on the object Internet. In the present invention, LTE is set as a basic network and operated. The LTE network is suitable for a mobile network where the network configuration is difficult due to the convenience of mobility and wired communication, and includes a function of transmitting high-speed data while moving. In the LTE block, the Gigabit Ethernet is designed as a redundant structure port that monitors the Ethernet network and status at 3-second intervals by the CPU and automatically switches when a failure occurs. It also includes functions that can be forcedly switched by software.

The GPS block 235 receives the satellite coordinates and confirms the current system position to transmit to the server. In the present invention, the communication is disabled when the line is disconnected. However, in the present invention, since the wired / wireless connection is duplicated, the wireless communication is possible even when the wired line is blocked, and the GPS module and the battery are built in even when the device is stolen And to track the location through the wireless network.

And a function for fetching data stored in a memory, etc., through system upgrades, serial communication, and the like via the USB block 231.

 The WiFi 2.4GHz block (232) and the WiFi 5GHz block (233) support the IEEE 802.11n / ac specification, which includes the ability to download and set system information at high speed.

    The LED display unit 218 includes a function of visually displaying the operation state of the system.

FIG. 3 includes a specific configuration diagram for automatic network recognition according to an embodiment of the present invention.

First, when the board is initialized, the CPU checks the connection status of each port. The CPU checks the connection status of the LTE network 120 and performs a ping test to check the normal data line connection status. As a result of checking the connection setup, it is normal that the LTE line is set as a master and the other port is blocked to prevent signal collision. If the port is not connected, the CPU will reset the LTE port and shut down the board output signal. When the LTE port is blocked, the CPU checks the operation status of the Giga Ethernet port (130). If the CPU confirms the Giga Ethernet connection status, if the port connection status is normal, the ping test is performed by the Ethernet server. If the data is normally received, And performs a gateway operation. If the connection test result shows that the connection is faulty, the port is shut off and the state of the exclusive purse line (140) is confirmed. In the case of the exclusive network, it is necessary to confirm the RF module between systems because it shows the structure to connect to the 2G or 3G CDMA network according to the module mounted on the board. If the module connection is normal, check the normal operation status by performing a ping test with the dedicated line server. If the result of the ping test is normal, the port is opened to allow the network to operate normally by connecting the server with the master network as a master. The CPU monitors LTE network and connection status of Giga Ethernet network at each 3-second interval to monitor the line state of the LTE network to the master board.

FIG. 4 is a block diagram of a three-way gateway switching between the Internet of wired and wireless networks. System operation for uplink automatic recognition is the same as the following output characteristics.

  Output Characteristics

  Sa = L1

  Sb = / L1 * L2 * / L3 + / L1 * L2 * L3

  Sc = / L1 * / L2 * L3

  / L1, / L2 and / L3 are inverse signals of the ping signals L1, L2 and L3, respectively.

  Sa is an LTE network signal output condition, and if the LTE network is normal, the LTE network is selected first regardless of the conditions of L2 and L3, and Ya is an output signal required when controlling the Sa output by software.

Sb is an operation condition condition for outputting Sb only when the Giga Ethernet network is normal as a Giga Ethernet network signal output condition.

Sc indicates the signal line condition of the exclusive network line state and is a condition for outputting only when L3 is normal. DUAL CPU block 410 periodically monitors each line state, that is, LTE block line state (L1), Giga Ethernet line state (L2), and dedicated line (L3) every 3 seconds and selects a network function . Ya, Yb, and Yc are signal lines for selecting the network in software.

With reference to FIG. 5, the wired / wireless triple control block 450 will be described in more detail.

The logic function of the A block 451 is Sa = L1 and Sa only receives the L1 signal. Logic output Sa always has signal selection priority over L2 or L3 in hardware operation.

The A block includes an AND gate, a multiplexer, and a tri-state buffer.

The multiplexer receives the signal passing through the AND gate and the L1 signal not passing through the AND gate, and is selected by S1. That is, when S1 selects "0", it selects the signal that passes through the AND gate for hardware output. When S1 selects "1", it selects the signal that does not pass through the AND gate for software output and outputs .

The tri-state buffer is provided in contrast to the case of outputting only the Sa signal by software, and when the CPU execution signal Ya is set to "0" and Yb and Yc are set to "1" Regardless of Sb, Sc output is cut off and only Sa output is outputted, so it operates with LTE network. At this time, S1 selects "1 " to select and output the L1 signal that has not passed through the AND gate.

The logic function of the B block 452 is Sb = / L1 * L2 * / L3 + / L1 * L2 * L3. The Sb output is Sb when the L2 is normal in the hardware logic, that is, when it is "1", regardless of the L3 signal.

The B block includes an AND gate, an OR gate, a multiplexer, and a tri-state buffer.

The multiplexer receives a signal passing through the AND gate and the OR gateway and an L2 signal not passing through the gateway, and is selected by S2. That is, if S2 selects "0", it selects a signal that passes through AND gate and OR gate for hardware output. If S2 selects "1", it selects signal that does not pass through gateway for software output And outputs it.

The tri-state buffer is provided in contrast to the case of outputting only the Sb signal by software. When the CPU execution signal Yb is set to "0" and Ya and Yc are set to "1", the L1 and L3 signals No matter, the output of Sa and Sc is cut off, and only Sb output is output, so the Giga Ethernet network is operated. At this time, S2 selects "1 " to select and output the L2 signal that has not passed through the AND gate and the OR gate.

The logic function of the C block 453 is Sc = / L1 * / L2 * L3. The Sc output will output Sc if the L3 is normal in the hardware logic.

The C block includes an AND gate, a multiplexer, and a tri-state buffer.

The multiplexer receives the signal passed through the AND gate and the L3 signal not passing through the gate, and is selected by S3. That is, if S3 selects "0", it selects a signal passing through the AND gate for hardware output. If S3 selects "1", it selects and outputs a signal not passing through the gateway for software output do.

The tri-state buffer is provided in case of outputting only the Sc signal by software. When the CPU execution signal Yc is set to "0" and Ya and Yb are set to "1", the L1 and L3 signals It will shut off the output of Sa and Sb and output only Sc output regardless of whether it operates as a dedicated network. At this time, S3 selects "1 " to select and output the L3 signal that has not passed through the AND gate.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, and variations and modifications may be made without departing from the scope of the invention. It will be understood that the present invention can be changed.

100: Sensors
200: Gateway
120: LTE network
130: Giga Ethernet network
140: Private network block
210:
220: Dual core CPU
230: LTE block
310: Flowchart
410: Dual core CPU
450: Port selection unit
ATM (Automatic Teller's Machine): ATM
LTE (Long Term Evolution): 4th generation communication
HD (High Definition): High definition video
IOT (Internet of Things): Things Internet
GPS (Global Positioning System): Satellite navigation system
WPAN (Wireless Personal Area Network): Short range wireless communication
Code Division Multiple Access (CDMA): Code Division Multiple Access
CPU (Central Processing Unit): Central processing unit
M2M (Machine To Machine)
WiFi (Wireless Fidelity): WiFi

Claims (4)

A gateway system for receiving data from a sensor and transmitting the data to a server,
The gateway system comprises:
A power control unit for supplying power;
A CPU block receiving power from the power controller to select a communication port of an LTE block, a Giga Ethernet block, and a dedicated network block to transmit data;
And a wired / wireless triple control block for generating a hardware logic signal or a software execution signal under control of the CPU block and transmitting an output signal to the LTE block, the Giga Ethernet block and the dedicated network block,
The wire / wireless triple control block includes an AND gate, an OR gate, a multiplexer, and a tri-state buffer,
The multiplexer selects and outputs one of the signal passed through the AND gate or the OR gate and the signal not passing through the AND gate or the OR gate according to the selection signal,
Wherein the tri-state buffer receives the CPU execution signal and controls the output. delete The method according to claim 1,
Wherein the selection signal selects one of a signal passed through an AND gate or an OR gate and a signal not passing through the AND gate or the OR gate according to the CPU execution signal. The method according to claim 1,
The wire / wireless triplexing control block includes an A block for transmitting an output signal Sa to the LTE block, a B block for transmitting an output signal Sb to the Ethernet block, and a C block for transmitting an output signal Sc to the dedicated network block, Assuming that the respective ping signals are L1, L2, and L3,
The logic function of the A block is Sa = L1,
The logic function of the B block is Sb = / L1 * L2 * / L3 + / L1 * L2 * L3,
Wherein the logic function of the C block is Sc = / L1 * / L2 * L3.

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