KR101806854B1 - Method and system for connectting access point using network status information - Google Patents

Abstract

The present invention relates to an access point access method and system using network status information, and an access point access system using network status information is connected to a plurality of terminals through a wireless network, and has an adjustment and control function through a wired network And the access point collects the status information of the wireless network and the status information of the wired network and provides the information to the plurality of terminals.

Description

TECHNICAL FIELD [0001] The present invention relates to an access point access method and system using network status information,

The present invention relates to an access point access method and system using network status information.

In the wireless communication network, a wireless communication access method of a terminal is a scanning process of searching for an access point (hereinafter referred to as "AP ") to which a terminal desires to access, a probe request to an access point A process of receiving a probe response from an accessing AP, and then associating the probe response with the AP.

Particularly, a scanning process of a terminal is a process of searching for a neighboring AP to which the terminal desires to access, the terminal broadcasting a probe request, and the AP receiving the broadcasted probe request transmits its information to the terminal through a probe response .

Conventionally, based on the above-described scanning result, the terminal can receive a list of APs to which the terminal can access, and the terminal selects an AP having the largest signal strength (RSSI) of the AP to access the corresponding AP.

In this regard, Korean Patent Publication No. 2011-0027042 (name: terminal and terminal control method) discloses a technique of selecting an AP by determining a received signal strength and a channel idle state of the AP.

In this way, when selecting an AP based on only information of a wireless network such as signal strength (received signal strength) and channel idle performance, an access point is connected to an AP having the largest signal strength or a channel idle property. However, There is a problem that the terminal can not access the AP due to a malfunction of the AP itself or can not receive a normal service even if the terminal is connected.

The present invention is to provide an access point access method and system using network status information for selecting and accessing an access point in consideration of wireless network status information of an access point as well as wired network status information.

According to an aspect of the present invention, there is provided an access point access system using network status information, comprising: an access point connected to a plurality of terminals through a wireless network and connected to a control network that performs adjustment and control functions through a wired network; Wherein the access point collects status information of the wireless network and status information of the wired network and provides the collected status information to the plurality of terminals.

According to another aspect of the present invention, there is provided an access point access method using network status information, wherein each of a plurality of access points collects status information of a wired network connected to a control network for adjusting and controlling the access point, Collecting status information of a wireless network connected to a terminal of the wired network, the plurality of access points being broadcast from a new terminal attempting connection, receiving a first probe request for requesting status information of the wired network and the wireless network Wherein the plurality of access points transmit a first probe response corresponding to the first probe request to the new terminal, and wherein the first probe response includes a first probe response and a second probe response, Network status information, including contextual information The yonghan access point connection method is provided.

The terminal selects an AP to be connected in consideration of the wireless network status information as well as the wired network status information so that the terminal can selectively access the AP that provides the optimal service quality, It is possible to prevent a state in which a normal service can not be received even if the AP can not be connected or connected.

FIG. 1 is a configuration diagram illustrating an access point access system using network status information according to the present invention.
2 is a diagram illustrating a wireless network connection relationship between an AP and a plurality of terminals according to the present invention.
3 is a diagram illustrating a wireless network connection relationship between one terminal and a plurality of APs according to the present invention.
4 is a flowchart illustrating an access point access method using network status information according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when a part is referred to as being "connected" to another part, it includes not only "directly connected" but also "electrically connected" with another part in between . Also, when an element is referred to as "comprising ", it means that it can include other elements as well, without departing from the other elements unless specifically stated otherwise.

The techniques presented in the present invention may be implemented in any one or more of code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple access (OFDMA), single carrier frequency domain multiplexing (SC- And may be used in various wireless communication networks, such as other networks. Here, the terms system and network used may often be used interchangeably.

CDMA networks implement wireless technologies such as Universal Terrestrial Radio Access (UTRA), cdma2000, and the like. UTRA includes wideband-CDMA (WCDMA) and low-rate chip rate (LCR). Cdma2000 also includes IS-2000, IS-95, and IS-856 standards. The TDMA network implements a radio technology such as the General Purpose System for Mobile Communications (GSM). The OFDMA network implements wireless technologies such as bulb UTRA (E-UTRA), ultra mobile broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, UTRA, E-UTRA, GSN, UMTS and LTE are presented in the documents of the " Third Generation Partnership Project (3GPP) ". Cdma2000 and UMB are also presented in documents of "3rd Generation Partnership Project 2 (3GPP2) ".

The present invention relates to an access point access system utilizing network situation information including a plurality of base stations and a plurality of terminals. In the present invention, an access point (hereinafter referred to as "AP" Explain.

FIG. 1 is a configuration diagram illustrating an access point access system using network status information according to the present invention.

In FIG. 1, for simplicity, three terminals 101, 102, and 103, two APs 201 and 202, three terminals 101 and 102 connected to the APs 201 and 202 through a wireless network 300, FIG. 4 illustrates one control network 500 connected through a network 400. FIG.

APs 201 and 202 may be fixed stations that communicate with terminals 101, 102, and 103 and may provide communication coverage for particular geographic areas. Each of APs 201 and 202 can communicate directly or indirectly with a neighbor AP through a wireless or wired network.

The control network 500 is connected to the APs 201 and 202 via a wired network (backhaul) 400 and can provide coordination and control (authentication, billing, etc.) for the APs 201 and 202.

The terminals 101, 102, and 103 may be connected to the APs 201 and 202 through the wireless network 300.

In the present invention, the terminals 101, 102 and 103 are stationary or mobile and may be referred to as an access terminal (AT), a mobile station (MS), a user equipment (UE), a subscriber unit, The terminals 101, 102 and 103 may be a cellular telephone, a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless telephone, a wireless local loop (WLL) The terminals 101, 102, 103 may communicate with the APs 201, 202 via the downlink and uplink. The downlink (or forward link) refers to the communication link from the AP 201, 202 to the terminal and the uplink (or reverse link) refers to the communication link from the terminal to the AP 201, 202.

2 is a diagram illustrating a wireless network connection relationship between an AP and a plurality of terminals according to the present invention.

As shown in FIG. 2, the AP 201 periodically communicates with currently connected terminals (101, 102, 103 and 104 in FIG. 2) to collect wireless network status information.

In the present invention, the wireless network context information includes uplink status information and downlink status information. The uplink status information may include information such as transmission failure, retransmission rate, and the downlink status information may include information such as signal strength (RSSI), frame check sequence (FCS) error rate, and the like.

In addition, the AP 201 of the present invention can acquire wireless network status information such as adjacent APs, number of co-channel APs, and number of adjacent channel APs by communicating with an adjacent AP.

In addition, the AP 201 of the present invention can collect the current number of connected terminals as the wireless network status information with respect to the maximum allowed number of terminals.

The AP 201 may collect status information of the wired network 400 connected to the control network 500.

In the present invention, the wired network status information may include a wired backhaul obstacle connecting the AP 201 and the control network 500, a usage rate, and may include a malfunction of the AP 201 itself.

The AP 201 creates a "network status information table" including wireless network status information and wired network status information, and stores it in a memory.

The AP (201) updates the network situation information table according to a predetermined period.

3 is a diagram illustrating a wireless network connection relationship between one terminal and a plurality of APs according to the present invention.

3, the terminal 101 transmits a first probe request for searching for neighboring APs 201, 202, 203 and 204 for wireless connection with the AP, (201, 202, 203, 204) transmits a first probe response corresponding to the first probe request to the terminal (101).

At this time, the first probe response includes a network status information table including wired network status information and wireless network status information.

The terminal 101 selects the AP with the best link state based on the first probe response received from the APs 201, 202, 203, and 204, and transmits the second probe request to the selected AP.

The selected AP transmits a second probe response corresponding to the second probe request to the terminal (101). Then, the terminal 101 is connected to the selected AP.

4 is a flowchart illustrating an access point access method using network status information according to the present invention.

As shown in FIG. 4, the APs 201 and 202 collect wireless network status information according to a set period (S401).

Also, the APs 201 and 202 collect the wired network status information according to the set period (S402).

At this time, the APs 201 and 202 may form the wireless network status information and the wired network status information into one network status information table and store them in a memory.

When the terminal 101 attempts to access the wireless network (indicated as WiFi On in FIG. 4) (S403), the terminal 101 broadcasts the first probe request to a plurality of adjacent APs 201 and 202 (S404).

The APs 201 and 202 transmit the first probe response corresponding to the first probe request to the terminal 101 (S405).

At this time, the first probe response includes the network status information table (wired network status information, wireless network status information).

The terminal 101 selects the AP with the best link status based on the first probe response received from the APs 201 and 202 (S406).

In FIG. 4, the AP 202 is shown as a selected AP having a better link state than the AP 201.

The terminal 101 transmits a second probe request to the AP 202 at step S407 and the AP 202 transmits a second probe response corresponding to the second probe request to the terminal 101 at step S408. Then, the terminal 101 and the AP 202 are connected.

As described above, in the present invention, the terminal receives the network status information table including the wireless network status information of the AP as well as the wired network status information to select the AP to be connected, so that the terminal provides the optimal service quality based on the network status information AP can be connected.

In addition, according to the present invention, the terminal selects the AP to be connected in consideration of the wired network situation information, thereby preventing a state in which the terminal can not access the AP due to the AP backhaul failure or the AP itself, have.

In the present invention, by selecting the AP to be connected in consideration of the wireless network status information including the number of the currently available terminals compared to the maximum allowable number of terminals provided by the AP, the terminal is prevented from being delayed And it is possible to efficiently use network resources by distributing load between APs.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

101, 102, 103 and 104:
201, 202, 203, 204: Access Point (AP)
300: Wireless network
400: Wired network
500: control network

Claims (14)

delete delete delete delete delete delete delete A method for access point access using network condition information performed in a wireless terminal,
Transmitting a first probe request to a plurality of neighboring access points to search for a plurality of access points adjacent to the wireless terminal;
Receiving a first probe response including a network context information table including wired network context information and wireless network context information from each of the retrieved plurality of access points; And
Selecting one of the retrieved plurality of access points based on the first probe response
Lt; / RTI >
Wherein the wired network status information is status information for a wired network between the plurality of access points and the control network,
Wherein selecting one of the retrieved plurality of access points based on the first probe response comprises:
Selecting one of the searched access points in consideration of the wired network status information and the wireless network status information included in the network status information table
The access point access method using the network status information. delete 9. The method of claim 8,
Transmitting a second probe request to the selected access point; And
Receiving a second probe response corresponding to the second probe request from the selected access point
The access point access method using the network status information. 9. The method of claim 8,
Wherein the status information of the wired network includes information on the presence or absence of a fault in a wired backhaul connected to the control network and a usage rate of the wired backhaul. delete 9. The method of claim 8,
Wherein the status information of the wireless network includes information on a signal strength (RSSI), a maximum allowable number of terminals, and a number of currently connected terminals. delete

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