KR100863120B1 - Apparatus and method for traffic information service using wireless LAN - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a traffic information service system and a method using a wireless LAN.

2. The technical problem to be solved by the invention

The present invention not only collects and provides traffic information such as vehicle location tracking, driving speed for each section, and unexpected situation information for a vehicle traveling in a wireless LAN communication area using a wireless LAN communication technology, but also includes weather, news, To provide a traffic information service system and method for providing additional information (such as internet search and mobile office functions) such as securities and file search (performance, neighboring shopping malls, etc.).

3. Summary of Solution to Invention

According to the present invention, in a traffic information service system using a wireless LAN, a channel is allocated to a vehicle loading terminal on a vehicle side entering a specific WLAN communication area, and a packet is collected from the vehicle loading terminal through the allocated channel. WLAN base station apparatus for; A packet classification server for delivering the collected packets to a corresponding server according to a result of analyzing a service identifier of the packets collected by the WLAN base station apparatus; And update the traffic information collected based on the traffic information collection contents included in the packet [traffic information collection packet] received from the packet classification server, and include the packet in the packet [traffic information request packet] received from the packet classification server. And a traffic information server for providing the traffic information corresponding to the traffic information request to the vehicle loading terminal through the WLAN base station apparatus.

4. Important uses of the invention

The present invention is used for a service for collecting and providing traffic information to a driving vehicle using a wireless LAN.

WLAN, WLAN base station equipment, vehicle loading terminal, traffic information, additional information

Description

Traffic information service system and method using wireless LAN {Apparatus and method for traffic information service using wireless LAN}             

1 is a diagram illustrating a configuration of a wireless LAN to which the present invention is applied.

2 is a block diagram of an embodiment of a traffic information service system according to the present invention;

3 is a flowchart illustrating a traffic information service procedure of a traffic information service system according to the present invention;

4 is a flowchart illustrating an additional information service procedure of a traffic information service system according to the present invention;

* Explanation of symbols for the main parts of the drawings

21: vehicle mounting terminal 22: terminal connection device

23: wireless LAN access device 24: wireless LAN base station device

25: packet classification server 26: traffic information server

27: additional information server

The present invention collects and provides traffic information such as vehicle location tracking, driving speed for each section, and accident situation information for a vehicle traveling in a wireless LAN communication area using a wireless local area network (WLAN) communication technology. Traffic information service system and method for providing additional information (such as internet search and mobile office function) such as weather, news, securities, file search (performance, neighboring shopping mall, etc.) and realizing the above method The present invention relates to a computer-readable recording medium having recorded thereon a program.

Conventionally, there has been a method of using Dedicated Short Range Communication (DSRC), a beacon communication method, or an infrared light method between a roadside base station device and a vehicle-mounted device for collecting and providing traffic information. In addition, these methods have not only slow data rates (9600bps to 1Mbps) but also extremely limited service coverage.

However, the wireless LAN technology is a technology that operates by being connected to a wired LAN according to IEEE802.3. The standard of the technology includes various various technologies such as IEEE802.11, IEEE802.11b, and Bluetooth. Recently, DS (Direct Sequence) wireless LAN according to IEEE802.11b is the most popular business and the price is getting cheaper.

The basic operation type of wireless LAN is a bridge mode operation type that operates by simply extending the wired LAN to a wireless section, and a separate protocol is installed to provide terminal authentication and DHCP (Dynamic Host Configuration Protocol) client and server functions. There is a form in which a function of receiving a public IP (Internet Protocol) address and allocating a private IP address to a terminal is added.

In addition to the wireless LAN relay function, the wireless LAN access device (AP) has a built-in LAN hub function, so that a wired port can be connected to a printer or a desktop PC that is placed in a fixed location without the need for mobility. It is built-in and allows wireless terminals to be connected to portable terminals such as PDAs and notebook computers.

In the case of WLAN, in order to enable only the terminals that are previously licensed to connect to the network, the MAC IDs of the NICs attached to the terminals are registered in the WLAN AP in advance so that the registered terminals If you want to access the wireless LAN, the connection is allowed, and the terminal without the MAC ID registered does not allow the connection.

In order to selectively use these functions, a management function is installed in the wireless LAN. This management function enables a general user to easily activate and deactivate various functions by using a browser window such as Internet Explorer in a WEB manner. have.

Therefore, in the current technical field, it has the characteristics as described above, the service area is wide, and the traffic information is collected and provided by applying the wireless LAN technology that can increase the data transmission speed from 1Mbps to 54Mbps, and also provided by the high speed LAN. There is a need for a method for performing Internet search and mobile office functions.

The present invention has been proposed in order to meet the above-described demands, and is used for a vehicle traveling in a wireless LAN communication area using a wireless LAN communication technology, such as vehicle location tracking, driving speed for each section, accidental situation information, and the like. Traffic information service system and method for collecting and providing information, as well as providing additional information (such as internet search and mobile office functions) such as weather, news, securities, and file search (performance, neighboring shopping malls, etc.), It is an object of the present invention to provide a computer-readable recording medium having recorded thereon a program for realizing the method.

The system of the present invention for achieving the above object, in a traffic information service system using a wireless LAN, the channel is assigned to the vehicle-mounted terminal of the vehicle side entering the specific wireless LAN communication area, and the channel through the allocated channel A wireless LAN base station apparatus for collecting packets from a vehicle-mounted terminal; A packet classification server for delivering the collected packets to a corresponding server according to a result of analyzing a service identifier of the packets collected by the WLAN base station apparatus; And update the traffic information collected based on the traffic information collection contents included in the packet [traffic information collection packet] received from the packet classification server, and include the packet in the packet [traffic information request packet] received from the packet classification server. And a traffic information server for providing the traffic information corresponding to the traffic information request to the vehicle loading terminal through the WLAN base station apparatus.
In addition, the system of the present invention provides the additional information corresponding to the additional information request included in the packet [additional information request packet] received from the packet classification server to the vehicle-mounted terminal through the WLAN base station apparatus. It further comprises an additional information server for.

On the other hand, the method of the present invention, in a traffic information service method using a wireless LAN, the step of allocating a channel to the vehicle-mounted terminal on the vehicle side entering a specific WLAN communication area; Collecting packets from the vehicle-mounted terminal through a channel on the allocated wireless LAN communication area; Analyzing a service identifier of the collected packets; And updating the collected traffic information based on the traffic information collection contents included in the packet as a result of analyzing the service identifier of the packet.
In addition, the method of the present invention, as a result of analyzing the service identifier of the packet, according to the traffic information request packet to determine the traffic information corresponding to the traffic information request included in the packet to the channel on the wireless LAN communication area Further comprising the step of transmitting to the vehicle mounting terminal.
In addition, the method of the present invention, as a result of analyzing the service identifier of the packet, the additional information corresponding to the additional information request included in the packet according to the additional information request packet to the channel on the wireless LAN communication area Further comprising the step of transmitting to the vehicle mounting terminal.

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The present invention is to implement a traffic information collection and provision system (ATIS: Advanced Traveler Information System) for collecting and providing traffic information to a driving vehicle using a wireless LAN communication technology, the existing wired LAN (Wire) When a vehicle enters into an extended wireless LAN communication area by using a wireless LAN base station device with a wireless LAN access device (AP) corresponding to a hub of a LAN, the wireless LAN base station device and the vehicle Collects and provides traffic information by configuring wireless LAN communication links between vehicle-mounted terminals equipped with a network interface card (NIC). In addition, due to the characteristics of the wireless LAN, as well as traffic information, additional information such as weather, news, securities, file search (performance, neighboring shopping malls, etc.), such as internet search and mobile office functions, is provided over the wireless Internet.

As such, in the present invention, a traffic information collection and provision system (ATIS) is configured by applying a wireless LAN technology capable of increasing the data transmission rate from 1Mbps to 54Mbps. This system not only collects and provides traffic information, but also has the advantage of providing Internet services and mobile office functions provided by high-speed LAN.

Here, the vehicle is equipped with a vehicle-mounted terminal (PDA or small notebook) in which a smart card and a terminal connection device are inserted, and the base station is provided with a wireless base station device in which a wireless LAN connection device is inserted. After the wireless LAN communication area is formed to cover the lanes, when a plurality of vehicles enter the communication area, the traffic information (vehicle location tracking, section-by-section driving) is carried out in real time between the vehicle-mounted terminal mounted in the vehicle and the wireless LAN base station device. In addition to collecting and providing speed information and sudden information, etc., additional information such as weather, news, securities, and file search (performance, neighboring shopping malls, etc.) provided by high-speed LAN can be provided. Wireless internet can be provided.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a configuration diagram of an embodiment of a traffic information service system according to the present invention.

As shown in Figure 2, the traffic information service system using a wireless LAN according to the present invention, the vehicle-mounted terminal 21 attached to the vehicle through the wireless LAN communication / collecting and providing traffic information and other additions A wireless LAN access point (AP) 23 for exchanging transactions for providing information, and when entering a vehicle in a wireless communication area (see FIG. 1), is connected to the vehicle-mounted terminal 21 through the wireless LAN access point 23. A WLAN base station device 24 for allocating an available channel, collecting and providing communication information through the allocated channel, and providing additional information, and a packet transmitted through the WLAN base station device 24 (traffic information). Collection packet, traffic information request packet, additional information request packet), and the packet classification server 25 for delivering traffic information and other additional information provided to the vehicle-mounted terminal 21 to the WLAN base station device 24. And traffic classified by the packet classification server 25. A traffic information server 26 for collecting the information collection packet, extracting the corresponding traffic information for the traffic information request packet, and providing the packet information to the packet classification server 25, and the additional information request packets classified by the packet classification server 25. Additional information server 27 for extracting the corresponding additional information for the packet classification server 25 to provide.

In order to collect / provide traffic information (vehicle location tracking, driving speed information for each section, unexpected situation information, etc.) and provide additional information (weather, news, securities, file search (performance, neighboring malls, etc.)), When a vehicle enters into an extended wireless LAN communication area by using a wireless LAN base station device 24 together with a wireless LAN access device 23 corresponding to a hub of an existing wired LAN. (See FIG. 1) A WLAN communication link should be configured between the WLAN base station apparatus 24 and the vehicle-mounted terminal 21 equipped with the terminal connection device 22 mounted on the vehicle.

The WLAN base station apparatus 24 exchanges transactions for collecting and providing traffic information with the vehicle-mounted terminal 21 attached to the vehicle through WLAN communication, and an ITS (Intelligent Transport System) service including a traffic information collection and provision service. A wireless LAN connection device 23 for processing is provided.                     

The on-vehicle terminal 21 that performs wireless LAN communication with the WLAN base station apparatus 24 is provided with a terminal connection device 22.

Packet classification server 25 is redundant to provide the traffic information and traffic information request packet collected from the vehicle loading terminal 21 to the traffic information server 26 and the additional information request packet to the additional information server 27. It is.

The traffic information server 26 processes the traffic information received from the packet classification server 25 in real time, extracts the corresponding traffic information for the traffic information request packet received from the packet classification server 25, and then uses the WLAN base station apparatus 24. Through the vehicle mounting terminal 21 is provided.

The additional information server 27 transmits the wireless LAN base station apparatus 24 to the corresponding additional information (weather, news, securities, file search (performance, peripheral store), etc.) for the additional information request packet received from the packet classification server 25. Through the vehicle mounting terminal 21 is provided.

When the vehicle driving with the vehicle-mounted terminal 21 with the terminal connection device 22 inserted therein enters the wireless LAN communication area (see FIG. 1), the wireless LAN base station device with the wireless LAN connection device 23 inserted therein ( 24) and a vehicle-mounted terminal identifier (24) and the vehicle-mounted terminal identifier (24) by the wireless communication between the vehicle-mounted terminal (21) and the wireless LAN base station device (24) wireless LAN base station device (24) The packet classification server 25 is transferred to the packet classification server 25, and the packet classification server 25 provides the received data to the traffic information server 26. Then, the traffic information server 26 processes the vehicle-mounted terminal identifier and the vehicle number data in real time to provide traffic information to the vehicle traveling through the WLAN base station communication area through the WLAN base station device 24.

In the traffic information service system according to the present invention, the vehicle location tracking using the vehicle-mounted terminal identifier collection using the WLAN communication between the vehicle-mounted terminal 21 and the wireless LAN base station device 24, the collected vehicle-mounted terminal identifier and the WLAN The traffic information collection service is presented by calculating the traveling speed information for each section using the distance between the base station devices 24, and the vehicle-mounted terminal is used to transmit the traffic information transmitted from the traffic information server 26 through the WLAN base station device 24. 21), traffic information providing services such as driving speed information and sudden situation information are presented based on the wireless LAN base station. Then, if the vehicle requests the additional information such as weather, news, securities, file search (performance, neighboring stores) in the wireless LAN communication area, by providing to the vehicle mounting terminal 21 through the wireless LAN base station device 24 Present additional information service.

3 is a flowchart illustrating a traffic information service procedure of the traffic information service system according to the present invention.

First, when the vehicle mounted with the vehicle mounting terminal 21 into which the terminal connection device 22 is inserted enters the wireless LAN communication area (see FIG. 1), the vehicle mounting terminal 21 is the terminal connection device 22. A channel allocation request is made to the WLAN base station device 24 connected to the WLAN access device 23 installed in the terrestrial base station through 301. In response to this, the WLAN base station apparatus 24 searches for an empty channel (available channel) and notifies the vehicle-mounted terminal 21 to the vehicle-mounted terminal 21 through the WLAN access apparatus 23 (302).

When the vehicle enters the wireless LAN communication area and a channel is allocated, the wireless LAN base station device 24 transmits the wireless LAN base station identifier, the date and time, and the service identifier information through the wireless base station device service table (BST). In step 303, the processor 20 transmits to the payload terminal 21.

Afterwards, the vehicle mounting terminal 21 that has received the BST is a vehicle mounting terminal identifier, a service identifier, a vehicle number, a sudden situation information, request traffic information, request additional information, and information included in the BST. It is included in the vehicle service table and transmitted to the WLAN base station apparatus 24 (304).

Next, when the WLAN base station device 24 having received the VST information transfers the VST contents to the packet classification server 25 as it is (305), the packet classification server 25 analyzes the service identifier in the VST contents (306). If the service identifier is a packet related to collecting and providing traffic information, the service identifier transmits the VST information to the traffic information server 26 (307).

The traffic information server 26 processes the data using the VST information received from the current WLAN base station device 24 and the VST information received from the previous WLAN base station device, such as driving speed information and unexpected situation information for each section. Generate traffic information. At this time, preferably, traffic information is collected at a predetermined time of 5 minute periods to increase the accuracy of the traffic information.

If the traffic information server 26 receives the traffic information from the vehicle loading terminal 21, the traffic information server 26 extracts the requested traffic information (308) and transmits the traffic information to the packet classification server 25 (309). Subsequently, the packet classification server 25 receiving the traffic information is transmitted to the WLAN base station apparatus 24 (310), and the WLAN base station apparatus 24 is the WLAN connection apparatus 23 and the terminal access apparatus 22. Traffic information is provided to the vehicle mounting terminal 21 through (311).

4 is a flowchart illustrating an additional information service procedure of a traffic information service system according to the present invention.

First, when the vehicle mounted with the vehicle mounting terminal 21 into which the terminal connection device 22 is inserted enters the wireless LAN communication area (see FIG. 1), the vehicle mounting terminal 21 is the terminal connection device 22. A channel allocation request is made to the WLAN base station device 24 connected to the WLAN access device 23 installed in the terrestrial base station through 401. In response to this, the WLAN base station apparatus 24 searches for an empty channel (available channel) and notifies the vehicle-mounted terminal 21 to the vehicle-mounted terminal 21 via the WLAN access apparatus 23 (402).

When the vehicle enters the wireless LAN communication area and a channel is allocated, the wireless LAN base station device 24 transmits the wireless LAN base station identifier, the date and time, and the service identifier information through the wireless base station device service table (BST). (403).

After that, the vehicle loading terminal 21 that has received the BST is a vehicle loading terminal identifier, a service identifier, a vehicle type, a vehicle number, a sudden situation information, a request traffic information, a request additional information, and information included in the BST vehicle loading terminal service table. The data is included in the VST and transmitted to the WLAN base station apparatus 24 (404).

Next, when the WLAN base station device 24 having received the VST information transfers the VST contents to the packet classification server 25 as it is (405), the packet classification server 25 analyzes the service identifier in the VST contents (406). If the service identifier is a packet related to the provision of additional information such as weather, news, securities, information, tourism, accommodation, etc., the VST information is transmitted to the additional information server 27 (407).

Subsequently, when the additional information server 27 receives the additional information from the vehicle mounting terminal 21, the additional information server 27 extracts the requested additional information (408) and transmits the additional information to the packet classification server 25 (409). Subsequently, the packet classification server 25 receiving the additional information is transmitted to the WLAN base station apparatus 24 (410), and the WLAN base station apparatus 24 is the WLAN connection apparatus 23 and the terminal access apparatus 22. The additional information is provided to the vehicle mounting terminal 21 through 411 (411).

The method of the present invention as described above may be implemented as a program and stored in a computer-readable recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.).

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible in the art without departing from the technical spirit of the present invention. It will be clear to those of ordinary knowledge.

As described above, the present invention forms a wireless LAN communication area that can cover multiple lanes through a single wireless LAN base station device, and when a plurality of vehicles enter the communication area, the vehicle-mounted terminal mounted on the vehicle and the wireless LAN. It not only collects and provides traffic information (vehicle location tracking, driving speed information for each section, unexpected situation information, etc.) between base station devices, but also provides weather, news, securities, and file search (performance, neighboring malls, etc.) provided by high-speed LAN. Additional information (such as Internet search and mobile office functions) can be provided over the wireless Internet, thereby effectively providing users with complex services.

Claims (10)

In a traffic information service system using a wireless LAN, A WLAN base station apparatus for allocating a channel to a vehicle-mounted terminal on a vehicle side entering a specific WLAN communication area and collecting a packet from the vehicle-mounted terminal through the allocated channel; A packet classification server for delivering the collected packets to a corresponding server according to a result of analyzing a service identifier of the packets collected by the WLAN base station apparatus; And Based on the traffic information collection contents included in the packet [traffic information collection packet] received from the packet classification server, the collected traffic information is updated and included in the packet [traffic information request packet] received from the packet classification server. Traffic information server for providing the traffic information corresponding to the traffic information request to the vehicle loading terminal through the wireless LAN base station device Traffic information service system using a wireless LAN comprising a. The method of claim 1, Additional information server for providing the additional information corresponding to the additional information request included in the packet [additional information request packet] received from the packet classification server to the on-vehicle terminal through the WLAN base station apparatus. Traffic information service system using a wireless LAN further comprising. The method according to claim 1 or 2, The traffic information, Traffic information service system using a wireless LAN, characterized in that it includes vehicle location tracking information, section speed information and accidental situation information. The method according to claim 1 or 2, The additional information, Traffic information service system using a wireless LAN comprising the Internet search and mobile office information. In the traffic information service method using a wireless LAN, Allocating a channel to a vehicle-mounted terminal on a vehicle side entering a specific WLAN communication area; Collecting packets from the vehicle-mounted terminal through a channel on the allocated wireless LAN communication area; Analyzing a service identifier of the collected packets; And As a result of analyzing the service identifier of the packet, updating the collected traffic information based on the traffic information collection contents included in the packet according to the traffic information collection packet; Traffic information service method using a wireless LAN comprising a. The method of claim 5, wherein Analyzing the service identifier of the packet and transmitting traffic information corresponding to the traffic information request included in the packet to the vehicle-mounted terminal through a channel on the wireless LAN communication area according to the traffic information request packet; Traffic information service method using a wireless LAN further comprising. The method of claim 5, wherein Analyzing the service identifier of the packet and transmitting the additional information corresponding to the additional information request included in the packet to the on-vehicle terminal through the channel on the wireless LAN communication area according to the additional information request packet; Traffic information service method using a wireless LAN further comprising. The method according to any one of claims 5 to 7, Packets collected from the vehicle mounting terminal, Includes a vehicle-mounted terminal identifier and a service identifier; Traffic information collection method, traffic information request information and additional information request information traffic service using a wireless LAN, characterized in that it comprises at least one. The method of claim 8, Packets collected from the vehicle mounting terminal, And identification information about the vehicle and WLAN base station identifier, date and time, and service identifier information on the wireless LAN communication area. The method of claim 9, Allocating a channel to the vehicle mounting terminal, According to the request for channel allocation from the vehicle mounting terminal, the available channel is allocated to the vehicle mounting terminal, Traffic information service method using a wireless LAN, characterized in that for transmitting the wireless LAN base station identifier, date and time and service identifier information on the wireless LAN communication area through the assigned channel.

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