JP2001244940A - Private radio data communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem due to the fact that a system can be easily constructed by an institution previously having facilities such as LAN or tele phone line but the system cannot be easily constructed since installation construc tion is required when newly introducing wiring facilities in a private radio data communication system using a radio LAN and a LAN or using private PHS (R) and a telephone line although the private data communication system has conventionally mainly been a data communication system using the LAN and the telephone line and the combination of these private data communication systems and radio equipment has the radio LAN for the former and the private PHS (R) for the latter. SOLUTION: The private radio data communication system is provided with a transmission line with an electric lamp line as a data line and a means for connecting the transmission line and terminal equipment by a radio interface so that the private radio data communication system can be inexpensively and easily constructed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a premises wireless data communication system, and more particularly to a power line such as a power line laid over a premises as a transmission line (data line). By performing the connection between the terminal devices via the wireless interface, a new facility for the data line is not required, and the local wireless data communication system can be constructed at low cost and easily.

[0002]

2. Description of the Related Art A local data communication system is called LA.
Data communication systems using N and telephone lines are mainly used. As a combination of the local data communication system and the wireless device, the former includes a wireless LAN, and the latter includes a local PHS.

[0003]

However, a conventional local wireless data communication system using a wireless LAN and a LAN, or a local PHS and a telephone line, is constructed in a facility having facilities such as a LAN and a telephone line in advance. However, when a new wiring facility is introduced, installation work is required, and there is a problem that a system cannot be easily constructed.

When a LAN is used, since power cannot be supplied from a data line, it is necessary to use a power supply such as a computer such as a mainframe, a server, or a client.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above-mentioned problems, and is intended to provide a private data communication system using a power line as a data transmission line, and a communication system between a transmission line and a terminal device. By providing the means for connecting with a wireless interface, a private wireless data communication system can be constructed inexpensively and easily. Many data communication devices and systems using power lines have been commercialized,
Although it is in operation, when data is transmitted using a power line in Japan, the available bandwidth is 10 kHz to 4 kHz.
It is limited to the range of 50 kHz, and when actually operating the device / system, a “harmonic use facility permit” is required.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (1) A private wireless data communication system includes a terminal device having a wireless device, a wireless device access point section serving as an access point of the wireless device provided in the terminal device, a terminal device and a wireless device. A server that manages the connection relationship with the access point unit and controls data communication between terminal devices, a transmission line that uses a power line as a data line, and a data transfer control that is connected to the transmission line and between the server and the transmission line. And an interface unit B connected to the transmission line and controlling the data transfer between the wireless device access point unit and the transmission line. In addition, a private wireless data communication system can be easily constructed.

(2) In the private wireless data communication system described in (1), the connection relationship between the terminal device and the radio access point section and the installation where the location where the radio access point section is located are represented by a predetermined place name. By providing the network configuration management information where the location is stored, and by providing means for acquiring the network configuration management information in the terminal device,
By knowing the location of the wireless device access point to which the terminal device can be connected, the location where the terminal device is located can be displayed in an easy-to-understand manner using a predetermined place name.

(3) In the private wireless data communication system according to (1) or (2), the connection status between the terminal device and the wireless access point unit is checked, and the connection relationship between the terminal device and the wireless device access point unit is checked. By providing the managing means, data communication can be performed even when the terminal device is moved without fixing the terminal device.

(4) In the private wireless data communication system described in (1), there is provided means for making the physical connection form of the interface section A and the interface section B on the transmission line side the same as the connection form of the existing power supply equipment. Thereby, the server and the wireless access point unit can be connected to existing power facilities such as power taps scattered throughout the premises,
A private wireless data communication system can be flexibly constructed.

[0010]

FIG. 1 is a block diagram showing the configuration of a private wireless data communication system according to the present invention. In the figure, 1 is a terminal device equipped with a wireless device, 2 is a wireless device access point unit serving as an access point of the wireless device provided in the terminal device 1, and 3 is a connection relationship between the terminal device 1 and the wireless device access point unit 2. Server that manages data communication and controls data communication between terminal devices; 6
Is a transmission path using a power line as a data line, 4 is connected to a transmission path 6, an interface unit A for controlling data transfer between the server 3 and the transmission path, 5 is connected to the transmission path 6, and a radio access point An interface unit B for controlling data transfer between the unit 2 and the transmission path.

Referring to FIGS. 2 to 4, a data communication operation between the terminal devices of the private wireless data communication system of the present invention will be described. FIG. 2 is a block diagram (1) of an embodiment of the present invention, FIG. 3 is an operation flowchart of an embodiment of data communication between terminal devices, and FIG. 4 is an embodiment (1) of a network configuration table. .

1 to 6 in FIG. 2 are the same as 1 to 6 in FIG. 2 is a network configuration table for managing the connection relationship between the terminal device 1 and the wireless device access point unit 2, and is managed by the server 3. Also,
In FIG. 2, the terminal device 1, the wireless device access point unit 2, and the interface unit B5 are combined into one set,
It is located on the second, third, and third floors, and the interface unit 4 and the server 3 are located on the third floor. The interface section B5 on each floor and the interface section A4 on the third floor are connected by using a power line as a transmission line.

The network configuration table 7 shown in FIG.
Is used to manage the connection relationship between the terminal device 1 and the wireless device access point unit 2. The installation location (wireless location) indicating the location where the interface unit A4 and the interface unit B5 are located is indicated by a predetermined location name. And the network IDs of the interface unit A4 and the interface unit B5.
And a terminal device 1 capable of data communication with the radio access point unit 2 connected to the interface unit B5 is linked to each network ID.

In this example, the terminal device 1, the radio access point unit 2 and the interface unit B5 are provided for each floor, so that the network device ID of the interface unit 5a is 1 and the terminal device 1a is the network ID of the interface unit 5b. : 2, the terminal device 1b is connected to the interface unit 5c.
The terminal device 1c is linked to the network ID: 3.

The operation will be described below with reference to the flow chart of FIG.

Step S301: The terminal device 1a transmits data to the terminal device 1c via a wireless device. In the transmission data, the data of the transmission destination and the transmission destination are added before the data.

Step S302: The radio access point 2a receives the data from the terminal device 1a, and transmits the received data to the interface B5a and the interface A.
To the server via. The data to be transferred is
Before the received data, the source and destination network I
D data is added.

Step S303: The server calculates an interface unit for transferring data from the destination of the received data from the network configuration table. In this example, the interface unit B5c of the network ID = 3 to which the destination terminal device 1c is connected is calculated. Then, the data received via the interface unit A and the calculated interface unit B5c is transferred to the wireless device access point unit 2c. In the data to be transferred, the data of the network ID of the transfer source and the transfer destination of the received data is changed.

Step S304: The radio access point section 2c transmits the received data.

Step S305: The terminal device 1c receives the data transmitted from the wireless device access point unit 2c, and receives the data if the data is addressed to itself. And
The operation ends.

In this example, the data communication from the terminal device 1a is performed to the terminal device 1c by relaying the server 3, but the wireless access point unit obtains the network ID of the transmission destination from the server and directly receives the network ID of the transmission destination. Data may be transferred to the wireless device access point unit.

Referring to FIGS. 5 and 6, an operation for acquiring network configuration management information in a terminal device will be described. FIG. 5 is a configuration block diagram (2) of one embodiment of the present invention,
FIG. 6 is an operation flowchart of an embodiment in which the terminal device acquires the network configuration management information.

5 are the same as 1 to 7 in FIG.

Hereinafter, the operation will be described in accordance with the flow of FIG.

Step S601: The terminal device 1a transmits a request for network configuration management information to the server via a wireless device. In the transmission data, the data of the transmission destination and the transmission destination are added before the data.

Step S602: The radio access point 2a receives data from the terminal device 1a, and transmits the received data to the interface B5a and the interface A.
To the server via. The data to be transferred is
Before the received data, the source and destination network I
D data is added.

Step S603: The server analyzes the received data, and if a request for network configuration management information is received, the data of the network configuration table is used as network configuration management information in the terminal device 1a of the transmission source, and the interface unit A and the interface unit B5a are transmitted. Via the wireless device access point unit 2a.

Step S604: The radio access point unit 2a transmits the received data.

Step S605: The terminal device 1a receives the data transmitted from the radio access point unit 2a, and if the data is addressed to itself, receives the data. And
The operation ends.

By such an operation, the terminal device 1a can acquire the network configuration management information. If the network configuration information is as shown in the network configuration table 7 in FIG. 4, the connection relationship between the terminal device and the wireless device access point unit and the location of the wireless device access point unit are represented by a predetermined place name. Therefore, the location of the wireless device access point connected to the specific terminal device, that is, the location of the terminal device can be obtained. For example, the terminal device 1a is used as a reception terminal, and the other terminal devices 1
If the location of b, 1c is displayed with a predetermined location name, and the user always carries the terminal device 1b, 1c as a mobile terminal device, a reception guide system for displaying the location where the user is currently located Can be easily constructed.

The operation of changing the network configuration when the terminal device moves will be described with reference to FIGS. FIG. 7 is a configuration block diagram (3) of an embodiment of the present invention,
FIG. 8 is an operation flowchart of an embodiment of a network configuration change when a terminal device moves, and FIG. 9 is an embodiment diagram (2) of a network configuration table.

7 are the same as 1 to 7 in FIG. The difference between FIG. 7 and FIG. 2 is that the terminal device 1c has moved from the third floor to the second floor.

The operation will be described below with reference to the flow chart of FIG.

Step S801: The terminal device 1c sends a position confirmation request to the server via the wireless device. In the transmission data, the data of the transmission destination and the transmission destination are added before the position confirmation request data.

Step S802: The radio access point 2b receives the data from the terminal device 1c, and transmits the received data to the interface B5b and the interface A.
To the server via. The data to be transferred is
Before the received data, the source and destination network I
D data is added.

Step S803: The server analyzes the received data, and if the request is a position confirmation request, the terminal device 1c of the transmission source
Is connected to the transfer source network ID: 2 using the network configuration table. At this time,
The network configuration table is in a state before the terminal device moves, and as shown in FIG.
Only terminal device 1b is connected to D: 2.

Step S804: Based on the processing result of step S803, it is determined whether it matches the network configuration table. If they match, the operation ends. If they do not match, the process proceeds to step S805.

Step S805: Source terminal 1c
Is changed to be linked to the transfer source network ID: 2. Therefore, as shown in FIG.
b and 1c are linked, and the terminal device is not linked to the network ID: 3. Then, the operation ends.

This operation is performed at predetermined intervals by the terminal device or before the terminal device starts data communication between the terminal devices, so that the private wireless data communication system can ensure data communication. Is changed.

In this example, the terminal device requests the server to confirm the position of the terminal device at predetermined time intervals.
The server may make a position confirmation request to the terminal device at predetermined time intervals, and confirm the current position from response data from the terminal device, that is, data of the transmission source and the transfer source.

FIG. 10 shows the interface section A of the present invention.
FIG. 4B is a diagram illustrating an example of a connection configuration on the transmission line side of B. (A) is a plug having a connection form, (b) is a bulb having a connection form, and (c) is a connection form having the same form as a base of a fluorescent lamp. By setting the connection modes of the interface units A and B on the transmission path side in this way, it is possible to install the server and the wireless device access point unit throughout the premises via the interface unit A and the interface unit B. .

[0042]

The present invention is embodied in the form described above, and has the following effects.

By using the power line as the data line and the power supply line, a new facility for the data line is not required, and it is possible to construct an in-house wireless data communication system at low cost and easily.

Further, by installing a radio access point section via power supply facilities such as power taps scattered throughout the premises via the interface section B, the terminal device equipped with the radio was moved without being fixed. Even in this case, data communication can be performed.

In the description of FIG. 5, a reception guide system is given as an application example of the private wireless data communication system. However, a private telemeter system, a private two-way pager, a destination (current position) management system, and the like are also used. It can be applied.

[Brief description of the drawings]

FIG. 1 is a structural block diagram of a private wireless data communication system of the present invention.

FIG. 2 is a configuration block diagram (1) of an embodiment of the present invention.

FIG. 3 is an operation flowchart of an embodiment of data communication between terminal devices.

FIG. 4 is a diagram (1) illustrating an embodiment of a network configuration table;

FIG. 5 is a configuration block diagram (2) of an embodiment of the present invention.

FIG. 6 is an operation flowchart of an embodiment in which a terminal device acquires network configuration management information.

FIG. 7 is a configuration block diagram (3) of an embodiment of the present invention.

FIG. 8 is an operation flowchart of an embodiment of a network configuration change when a terminal device moves.

FIG. 9 is a diagram (2) of the embodiment of the network configuration table;

FIG. 10 is a diagram illustrating an example of a connection configuration on the transmission line side of the interface units A and B according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Terminal device 2 Radio access point unit 3 Server 4 Interface unit A 5 Interface unit B 6 Transmission line (light line)

Claims (4)

[Claims] 1. A terminal device (1) having a wireless device, a wireless device access point unit (2) serving as an access point of the wireless device provided in the terminal device (1), and a terminal device (1).
Server (3) that manages the connection relationship between the terminal and the wireless device access point unit (2) and controls data communication between terminal devices
And a transmission line (6) that uses a power supply line extended in the premises as a data line, and an interface unit A (connected to the transmission line (6) for controlling data transfer between the server (3) and the transmission line). 4) and a local wireless data connection comprising a wireless access point section (2) connected to the transmission path (6) and an interface section B (5) for controlling data transfer between the transmission paths. Communications system. 2. The private wireless data communication system according to claim 1, wherein: a connection relationship between the terminal device and the wireless device access point unit;
Network configuration management information in which a location where the wireless device access point section is located by a predetermined location name is stored, and means for acquiring the network configuration management information in a terminal device is provided. Private wireless data communication system. 3. The private wireless data communication system according to claim 1, wherein a connection status between the terminal device and the wireless access point unit is confirmed, and a connection relationship between the terminal device and the wireless device access point unit is managed. A private wireless data communication system, comprising: 4. The private wireless data communication system according to claim 1, further comprising means for making the physical connection form of the interface section A and the interface section B on the transmission line side the same as the connection form of the existing power supply equipment. A private wireless data communication system.