KR20120069229A - Wi-pi wireless network system series connection of aps - Google Patents

Abstract

The present invention relates to a Wi-Fi wireless network system that supports high-speed wireless Internet service, and more particularly, the access points to which the external terminal is wirelessly connected are connected to each other in a serial structure, and are constituted by a topology in the form of a bridge. Built-in features allow for more flexible Internet service and lower installation and maintenance costs than traditional Star or Mesh topologies, resulting in economical efficiency and bypassing wireless access points. By providing a function, a serial Wi-Fi wireless network system does not affect the Internet service of a lower wireless access point even if an error occurs in any one of the connected access points.
In the serial Wi-Fi wireless network system according to the present invention, an Access Point (AP) having a Wi-Fi module for wirelessly transmitting and receiving data with an external terminal is connected to each other by wire to provide an Internet service to the connected external terminal. In a Wi-Pi wireless network system, the access points are connected in a serial structure to transmit and receive data, and when an error occurs, bypass the data received from the access point connected to one side and transmit the data to the access point connected to the other side. It is characterized by comprising a bypass means.

Description

Wi-Pi wireless network system series connection of APs

The present invention relates to a Wi-Fi wireless network system that supports high-speed wireless Internet service, and more particularly, the access points to which the external terminal is wirelessly connected are connected to each other in a serial structure, and are constituted by a topology in the form of a bridge. Built-in features allow for more flexible Internet service and lower installation and maintenance costs than traditional Star or Mesh topologies, resulting in economical efficiency and bypassing wireless access points. By providing a function, a serial Wi-Fi wireless network system does not affect the Internet service of a lower wireless access point even if an error occurs in any one of the connected access points.

Wi-Pi is a short-range wireless network provided by the Wireless Ethernet Compatibility Association, or Wireless Ethernet Compatibility Alliance (WECA), as an 802.11b / g / n wireless Ethernet standard.

As a short-range wireless communication network, Wi-Fi forms a wireless network by connecting wireless access points (APs) connecting the connected external terminal to the Internet network.

 The wireless access point (AP) is a Wi-Fi module for supporting wireless data transmission and reception with an external terminal equipped with a wireless communication module, and a power module for supplying driving power to the Wi-Fi module by converting commercial AC power into a drive DC power. It includes.

The access points forming the Wi-Fi wireless network are connected to each other to transmit and receive data.

In addition, the Wi-Fi wireless network system in order to support the external terminal connected to the access point to the Internet network to provide the Internet service, in the mesh structure of the Wi-Fi wireless network system of the prior art (mesh) router in the mesh type In the wireless access point, the Wi-Fi wireless network system of a star structure according to the prior art includes a separate IP switch to which the wireless access points are connected in a star form.

The Wi-Fi wireless network system of a star structure according to the prior art is a method of connecting a plurality of APs in a star type centering on an IP switch installed separately, and an increase in cost of installing a separate IP switch, and an IP switch and an AP Outdoor installation is difficult due to distance limitations, all connected APs are not able to provide Internet service in case of IP switch failure, and the connection structure between APs of Wi-Fi wireless network is complicated. There is a problem that it is not easy.

FIG. 1 is another Wi-Fi wireless network system having a mesh structure according to the related art, and access points are connected to each other in a mesh structure as shown in FIG. 1.

In the prior art, connecting access points to each other in a mesh structure supports Internet services in a wider area, and when one access point fails, the other access points access data from each other through access paths on different paths in which they operate normally. It is a connection structure to allow transmission and reception so that other access points do not interfere with Internet service support.

Such a mesh wireless Wi-Fi wireless network system has an advantage of easy network configuration and installation compared to a star structure, but requires a lot of network construction costs due to the high price of equipment constituting the AP, and between mesh nodes, that is, between APs. Since wireless communication is not a standard protocol, there is a problem in that a specific manufacturer's equipment must be unified and installed, and a data transmission band between mesh nodes is limited.

In addition, the mesh structure is easier to configure and install the network than the star structure, but there is a problem that the mesh structure is not easy to construct and install the network because the connection structure between the APs is complicated.

Although the probability of occurrence in a Wi-Fi wireless network in which access points are connected to each other in a mesh structure is not high, the access points of Group A and Group C are mutually connected by connecting between Group A's access points and Group C's wireless shares in between. If all of the access points of group B connecting to transmit / receive fail, the group A and group C are separated from each other and data transmission / reception is not possible, which may result in a problem that the Internet service is not supported smoothly.

The present invention has been made to solve the problem of the Wi-Fi wireless network system according to the prior art in which APs are connected in a star structure or a mesh structure as described above, and embed an IP switch module in the access point and interconnect the access points in a serial structure. The purpose of the present invention is to provide a serial Wi-Fi wireless network system having excellent economical efficiency by connecting and facilitating the configuration and installation of a network, and thus, the network installation cost and maintenance cost are lower.

In addition, an error occurs in one of the intermediate access points as the access points are connected in a serial structure, and the access points are separated from each other so that data transmission and reception are mutually interrupted. It is an object of the present invention to provide a serial Wi-Fi wireless network system having a bypass means for bypassing and transmitting data received from one access point to another air.

The wires that connect the access points with wires to transmit and receive data between each other are resistant to high-speed transmission and electromagnetic noise, and most of all, use an optical cable that can transmit data even when there is no power supply. It is another object of the present invention to provide a serial Wi-Fi wireless network system that can bypass and transmit data even in a state.

Serial Wi-Fi wireless network system according to the present invention for achieving the above object is

In a Wi-Pi wireless network system in which an access point (AP) having a Wi-Fi module for wirelessly transmitting and receiving data to and from an external terminal is interconnected to provide an Internet service to an connected external terminal,

The access points are provided with an IP switch module for connecting the external terminal and the IP host of the Internet network requested by the external terminal wirelessly connected through the Wi-Fi module, and is connected in a serial structure to transmit and receive data do.

And the access point is characterized in that it comprises a bypass means for bypassing the data received from the access point connected to one side when an error occurs to transmit to the access point connected to the other side,

The access points are interconnected by an optical cable,

The bypass means

A connector connected to the access point,

Two adapters to which the optical cables connecting to access points on both sides are connected,

Normally, the connector and the adapter are connected to enable data communication between the access points, and if an error occurs in the corresponding access point, the two adapters are connected so that data received from the access point of one side is transferred to the access point of the other side. It characterized in that it comprises a switch for passing and transmitted,

The bypass means further comprises an optical module transceiver connecting the switch and the connector and converting an optical signal into a digital signal.

Serial Wi-Fi wireless network system according to the present invention having such a configuration is easy to configure and install the network because the connection of the wireless access point (AP) is simple, according to the low cost of installation and maintenance, thereby excellent economy However, even if an error occurs in one wireless access point, data transmission and reception between the other wireless access points does not interfere, so that the support of the Internet service will not be prevented in areas outside the area covered by the wireless access point. To ensure delivery.

1 is a connection state diagram of access points of a mesh structure Wi-Fi wireless network system according to the prior art.
2 is a connection state diagram of access points of a serial Wi-Fi wireless network system according to the present invention.
3 is a schematic block diagram of an access point and bypass means in accordance with the present invention;
4 is a plan view of a PCB equipped with bypass means.
5 is a diagram showing a transmission / reception path of data in the bypass means.

Hereinafter, a serial Wi-Fi wireless network system according to the present invention will be described in more detail with reference to FIGS. 2 to 5.

First, as shown in Figure 2, the access points (AP) of the Wi-Fi wireless network system according to the present invention are connected to each other in a serial structure.

That is, one access point (AP) is connected to both sides of the access point (AP) by wire or wireless, respectively, forming a bridge topology-like wireless network as if connected by a bridge.

In order to form a serial structure, wireless access points are provided in two forms. It consists of up and down configuration through UTP wired cable and optical cable configuration with bypass function.

The access point AP

Wi-Fi module 10 for transmitting and receiving data to and from an external terminal (CT) equipped with a wireless communication module,

An IP switch module 20 which communicates with the Wi-Fi module 10 and connects an external terminal CT connected through the Wi-Fi module 10 and an IP host of the Internet network to support an Internet service to the external terminal CT. and,

It includes a power module 30 for supplying driving power to the Wi-Fi module 10 and the IP switch module 20.

The Wi-Fi module 10 includes a transmitter 11 and a receiver 12 for transmitting and receiving data wirelessly with the external terminal CT.

The transmitting unit 11 and the receiving unit 12 are connected to exchange data with an external terminal CT, and the IP switch module 20 is connected to the IP switch module 20, the Internet network, and another access point (AP). Communication unit 13 that can exchange data with the,

An oscillator 15 generating and oscillating a radio frequency to enable wireless communication with the external terminal CT;

The memory 14 is connected to the communication unit 13 and temporarily stores various programs necessary for the operation of the Wi-Fi module 10 and various data exchanged with the external terminal CT and the IP switch module 20. It is done by

The IP switch module 20 is RJ45 LAN connector 21 is connected to the Internet network of the local area network (LAN),

A memory 24 for temporarily storing various programs for operating the IP switch module 20, various data exchanged with the Wi-Fi module 10, the Internet network, and other access points (AP), and the like;

Manchester coded the digital signal transmitted from another access point (AP) through the bypass means 40 to resist noise, and converts it into a differential signal and inputs it to the IP switch module 20 (PHY). ) Is connected.

In addition, the bypass means 40 is connected to the IP switch module 20 through the physical transceiver 23 (PHY).

The bypass means 40 is capable of transmitting and receiving data between the access points AP by connecting the IP switch module 20 of two adjacent access points AP connected to the corresponding IP switch module 20 by wire. When an error occurs in the corresponding AP, two adjacent APs are directly connected to each other so that data is bypassed between the two APs and is directly transmitted and received.

 If the external terminal (CT) through the access point (AP) as described above briefly describes the process of using the Internet service.

When the external terminal (CT) in the wireless communication possible area transmits a signal that attempts to connect, the Wi-Fi module 10 receives it and transmits it to the IP switch module 20, the IP switch module 20 is the external terminal ( It connects the external terminal (CT) with the host of the corresponding IP address by analyzing the address of the data transmitted by CT) and connecting to the Internet network.

Next, various data are transmitted and received between the external terminal CT and the host on the Internet through the Wi-Fi module 10 and the IP switch module 20 by a user's operation using the external terminal CT. You will be provided.

Here, the host includes various sites, cafes, blogs, and other user's external terminals (CTs) provided on the Internet or connected to the Internet network. The IP switch module 20 may be directly connected to the Internet network, or may be indirectly connected to the Internet network through the IP switch module 20 of another access point (AP).

3 to 5, the bypass means 40, which can be said to be the core of the present invention, will be described in more detail.

The bypass means 40 includes a connector 41, an adapter 43, an optical module transceiver 45, and a switching switch 47, which are mounted on the PCB 49 to the access point AP. Detachable simply connected to the connector 21 is provided.

In the access points (AP) connected in a serial structure, the access point (AP) disposed at the beginning and end nodes of the wireless network will be connected to one access point (AP) to transmit or receive data only In addition, the bypass means 40 provided in the access point AP disposed at the first and end nodes may not have the changeover switch 47.

The bypass means 40 is connected to a wire to connect the access point (AP) and the access point (AP) to enable data transmission and reception, the bypass means 40 is an error occurs in the access point (AP) In this case, the data input from one connected AP does not transmit to the corresponding access point, but bypasses the data to another connected AP.

At this time, a substantial part of the error cause of the access point AP is when the supply of the driving power is interrupted due to a power failure or the failure of the power module 30, that is, a no power supply state. Therefore, it is preferable to use a wire that can transmit data even in a non-powered state, and an optical cable (optical fiber) is typical of such a wire. Of course, if the access point (AP) is provided with a separate power supply means for supplying power to the wire when the power supply state, but may be used as a coaxial cable, such as wired, but it will not be preferable because it takes additional cost. In addition, the optical cable is capable of high-speed transmission of data, which is advantageous for the transmission of large-capacity data, and also has the advantage of enabling safe data transmission because there is almost no influx of noise due to electromagnetic waves in the data transmission process.

The connector 41 is provided at one end of the PCB 49 and is connected male and female to the connector 21 provided at the access point AP.

The adapter 43 is provided with two openings at the other end of the PCB 49, and each wire is connected to two adjacent access points (AP).

The optical module transceiver 45 is connected to the connector 41 and two adapters 43, that is, two are provided, and converts the optical signal input from the adapter 43 into a digital signal to the connector 41 On the contrary, the digital signal input from the connector 41 is converted into an optical signal and output to the adapter 43.

Two switching switches 47 are provided to connect the two adapters 43 and the two optical module transceivers 45 with each other, and normally access the data input from the adjacent access point AP through the optical cable. In case that an error occurs in the AP, the two adapters 43 are connected to each other to bypass the data input from one AP, and then the other AP. Will output

The switching switch 47 is automatically switched when the driving power is cut off because the access point AP is in a no-power state, and when another error occurs in the access point AP, It automatically switches to receiving the error signal. In addition to the automatic switching, the switching switch 47 may be manually switched.

In a Wi-Fi wireless network system in which access points (AP) are connected in series as in the present invention, when an error such as a non-powered state occurs in one access point (AP), even if data is received from another access point (AP), it is processed. It is not possible to transmit the received data to another access point (AP), the access points (AP) disposed on both sides of the access point (AP) in which the error occurs is separated and the data transmission and reception between each other, As a result, it is impossible to provide a smooth internet service to an external terminal (CT). Therefore, in this case, the data input from another access point (AP) must be bypassed immediately to another access point (AP) to prevent the failure of Internet service support, and this function is the bypass of the present invention. Means 40.

Referring to Fig. 5, the bypass means 40 of the present invention briefly describes the processing of data received from another access point (AP).

First, when there is no error in the access point AP, the data transmitted from the access point AP of the adjacent A node is sequentially input to the receiving end R of the adapter 43a, and the second switching switch 47b. ) Is input to the optical module transceiver 45a again and received by the corresponding access point (AP). Similarly, data transmitted from an access point (AP) of node B is sequentially input to the second adapter 43b, the first switching switch 47a, and the second optical module transceiver 45b to the corresponding access point AP. Is received.

The data transmitted by the access point AP to the access point AP of the node A is sequentially transmitted through the optical module transceiver 45a, the first switch 47a, and the first adapter 43a. The data transmitted to the access point AP of the node B is sequentially transmitted through the second optical module transceiver 45b, the second switching switch 47b, and the second adapter 43b.

Next, when an error occurs in the access point (AP), the switching switch 47 is automatically switched, accordingly

The data transmitted from the access point (AP) of the node A is sequentially transmitted through the receiving terminal (R) of the first adapter 43a, the second switching switch 47b, and the transmitting terminal T of the second adapter 43b. Passed and transmitted to the access point (AP) of the node B, the data transmitted from the access point (AP) of the node B is sequentially received at the receiving end (R) of the second adapter (43b), the first switch (47a), 1 Bypass through the transmitting end (T) of the adapter 43a is transmitted to the access point (AP) of the A node.

In the above description of the present invention with reference to the accompanying drawings has been described with respect to the serial structure Wi-Fi wireless network system having a specific configuration and structure, the present invention can be variously modified and changed by those skilled in the art, such variations and modifications It should be interpreted as falling within the protection scope of the invention.

AP: Access Point CT: External Terminal
10: Wifi module 20: IP switch module
30: power supply module 40: bypass means
41: connector 43: adapter
45: optical module transceiver 47: switching switch

Claims (4)

In a Wi-Pi wireless network system in which an access point (AP) having a Wi-Fi module for wirelessly transmitting and receiving data to and from an external terminal is interconnected to provide an Internet service to an connected external terminal,

The access points are provided with an IP switch module for connecting the external terminal and the IP host of the Internet network requested by the external terminal wirelessly connected through the Wi-Fi module, and is connected in a serial structure to transmit and receive data Serial Wi-Fi wireless network system. The method of claim 1,
And the access point has a bypass means for bypassing data received from an access point connected to one side and transmitting the data to an access point connected to the other side when an error occurs. The method of claim 2,
The access points are interconnected by an optical cable,

The bypass means
A connector connected to the access point,
Two adapters to which the optical cables connecting to access points on both sides are connected,
Normally, the connector and the adapter are connected to enable data communication between the access points, and if an error occurs in the corresponding access point, the two adapters are connected so that data received from the access point of one side is transferred to the access point of the other side. Serial Wi-Fi wireless network system comprising a switch for passing and transmitting. The method of claim 3, wherein
The bypass means further comprises an optical module transceiver connecting the switch and the connector and converting an optical signal into a digital signal.

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