JPH08125600A - Radio wave communication system inside building - Google Patents

Abstract

PURPOSE: To enable radio wave communicating without being obstructed by means of a shielding object by transmitting and receiving radio wave between a first mobil communication terminal slave station and the second mobil communication terminal slave station with a first repeating antenna, a TV community receiving wiring and the second repeating antenna. CONSTITUTION: In a building with a partition such as a floor, wall, etc., shielding radio wave, the first mobil communication terminal slave station 2 in a first room A emits radio wave. The radio wave is received by the first repeating antenna 24 having a connecting equipment 25 connected to the TV community receiving wiring 21 which is laied over the respective rooms on the respective floors. Received radio wave is transmitted to the second repeating antenna 26 provided in the second room B by way of the TV community receiving wiring 21. The second repeating antenna 26 emits transmitted radio wave toward the inside of the room. Then, the second mobil communication terminal slave station 5 in the second room B receives the radio wave to that radio wave communication is executed between the first mobil communication terminal slave station 2 and the second mobil communication terminal slave station 5. Therefore, radio wave communication is enabled without being obstructed by the shielding object, etc.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a floor for shielding radio waves,
The present invention relates to an in-building wireless communication system between mobile communication terminal slave stations or between a mobile communication terminal slave station and a communication master station in a building having walls and partitions.

[0002]

2. Description of the Related Art A conventional technique will be described with reference to FIGS. FIG. 4 is an explanatory diagram showing an example of a conventional in-building wireless communication system. FIG. 5: is explanatory drawing which shows the other example of the conventional wireless communication system in a building.

In a building 1 having a floor, walls, and partitions for shielding radio waves, there are a first mobile communication terminal slave station 2 and a second mobile communication terminal slave station 5 in different rooms. There is a case where wireless communication is performed between the mobile communication terminal slave station 2 and the second mobile communication terminal slave station 5. A mobile communication terminal slave station is a highly portable communication terminal such as a cordless telephone slave unit or a telemeter / telecontrol, and has a wireless communication unit and an antenna.

When performing wireless communication, first, the wireless communication unit 3 provided inside the first mobile communication terminal slave station 2 converts voice information and the like into high frequency signals, and the high frequency signals are converted into radio waves through the antenna 4. Place and place the call. The radio waves mainly penetrate the shield 8 and are received by the antenna 7 of the second mobile communication terminal slave station 5, and the radio communication unit 6 in the second mobile communication terminal slave station 5 is received.
And is converted into voice information and the like again.

When the radio wave cannot penetrate the shield 8, a relay antenna is installed in each room as shown in FIG. 5, and a dedicated cable for connecting each relay antenna is laid to provide a relay antenna and a dedicated antenna. Wireless communication may be performed via a cable.

In this case, the radio wave emitted from the wireless communication section 3 of the first mobile communication terminal slave station 2 through the antenna 4 is the first radio wave installed in the room where the first mobile communication terminal slave station 2 is present. The second relay installed in the room in which the second mobile communication terminal slave station 5 is present through the dedicated cable 11 which is received by the relay antenna 9 and is connected to the relay antenna 9 via the connector 10. Reach the antenna 12.
The arriving radio wave is emitted toward the room through the second relay antenna 12, the antenna 7 of the second mobile communication terminal slave station 5 receives the radio wave, and the radio wave is transmitted to the second mobile communication terminal slave station 5. To reach the wireless communication unit 6.

[0007]

However, in the in-building wireless communication system as shown in FIG. 4, the thick floor surface or wall surface of concrete in which steel frames or reinforcing bars are embedded hardly transmits radio waves, When the partition walls that can be relocated are also sealed from the floor to the ceiling for sound insulation, etc., a steel plate is usually used as a material to shield radio waves, and heat insulating materials are often used in homes as well. Since the heat insulating material shields the radio waves, there is a problem that the radio waves are greatly attenuated by these shields and the wireless communication between the mobile communication terminal slave stations cannot be easily performed.

Further, in the in-building wireless communication system as shown in FIG. 5 described above, there is no problem in terms of attenuation of radio waves by the shield, but installation and wiring costs are naturally high in order to install a dedicated cable. It will be necessary, for example, if it is installed in an existing house, additional work will be required, and it will tend to be exposed wiring and the appearance will be bad, and the construction cost will be further increased to make it a concealed wiring that looks good There was a problem.

The present invention has been made in order to solve the above problems, and an object of the present invention is to provide a mobile station between mobile communication terminals or mobile stations which are trying to communicate with each other without installing a dedicated cable. Between the communication terminal slave station and the communication master station,
An object of the present invention is to provide an in-building wireless communication system capable of wireless communication without being obstructed by a shield existing between the two.

[0010]

In order to solve the above-mentioned problems, the present invention provides a first room in a building having a floor, a wall and a partition for shielding radio waves. In the in-building wireless communication system between the first mobile communication terminal slave station that is in the second room and transmits and receives radio waves, and the second mobile communication terminal slave station that is in the second room and transmits and receives radio waves, each floor A television co-listening wiring laid across a room and a television co-listening wiring provided in the first room connected to the television co-listening wiring to transmit and receive radio waves to and from the first mobile communication terminal slave station. One relay antenna and a second relay antenna provided in the second room connected to the television common listening wiring to transmit and receive radio waves to and from the second mobile communication terminal slave station. Between the first mobile communication terminal slave station and the second mobile communication terminal slave station Transmission and reception of the waves, is characterized in that performed through the first relay antenna and TV co 聴配 line and the second relay antennas.

According to the invention of claim 2, in a building between a mobile communication terminal slave station and a communication master station for transmitting and receiving radio waves in a building having a floor, a wall and a partition for shielding radio waves. In a wireless communication system, a TV co-listening wiring laid across each room on each floor, a first mobile communication terminal slave station existing in the first room for transmitting and receiving radio waves, and the TV in the first room A first relay antenna that is connected to the common listening wiring and transmits and receives radio waves to and from the first mobile communication terminal slave station; and a second room that is connected to the common listening wiring and is connected to the television common listening wiring. And a communication master station having a second relay antenna for transmitting and receiving radio waves, and transmitting and receiving radio waves between the first mobile communication terminal slave station and the communication master station as a first relay antenna. It is characterized in that it is performed via the television common listening wiring.

[0012]

With the above construction, in the invention according to claim 1, the radio waves emitted from the first mobile communication terminal slave station existing in the first room are distributed to each room on each floor. Received by the first relay antenna provided in the first room provided with a connector for connecting to the television co-listening wiring to be laid, and the radio wave is transmitted to the second room through the television co-listening wiring. The second relay antenna is transmitted to the second relay antenna provided, the second relay antenna emits the transmitted radio wave toward the room, and the second mobile communication terminal existing in the second room. Since the station receives the radio wave, wireless communication can be performed between the first mobile communication terminal slave station and the second mobile communication terminal slave station.

According to the second aspect of the invention, the radio waves emitted from the mobile communication terminal slave station in the first room are:
The first relay antenna provided in the first room provided with a connector for connecting to the television common listening wiring laid across each room on each floor receives, and the television common listening wiring is the second Between the mobile communication terminal slave station and the communication master station, since the radio waves are transmitted to the communication master station equipped with the second relay antenna that is provided in the room connected to the television common listening wiring and transmits and receives the radio waves. Wireless communication is possible with.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of an in-building wireless communication system according to the present invention will be described below with reference to FIGS. 1 and 2, and a second embodiment will be described with reference to FIG.

[First Embodiment] Most of the buildings currently constructed have a common-use wiring for television, and especially in a house or the like, the common-use television wiring is installed even in each room. In many cases.

FIG. 1 is an explanatory diagram of an in-building wireless communication system, and FIG. 2 is an explanatory diagram of an in-building wireless communication system when a distributor is added.

In FIG. 1, reference numeral 1 is a floor for shielding radio waves,
A building with walls and partitions is shown. In building 1,
When the first mobile communication terminal slave station 2 exists in the first room A and the second mobile communication terminal slave station 5 exists in the second room B, the first mobile communication terminal slave station 2 A case in which wireless communication is performed between the second mobile communication terminal slave station 5 and the second mobile communication terminal slave station 5 will be described.
A mobile communication terminal slave station is a highly portable communication terminal such as a cordless telephone slave unit or a telemeter / telecontrol, which is used to transmit / receive voice information, measurement information, control information, etc. And has an antenna.

Inside the frame of the building 1, the television common wiring 2
1 is laid. The television common listening wiring 21 has terminals 22 and 2 for television antennas in the first room A and the second room B.
3

In the first room A, there is a first mobile communication terminal slave station 2 and a first relay antenna 24 for transmitting and receiving radio waves. The first relay antenna 2
Reference numeral 4 designates the first relay antenna 24 for the TV common listening wiring 2
It has the 1st connector 25 for connecting to 1 and attaches this 1st connector 25 to the terminal 22 for television antennas, and connects it with the television common listening wiring 21.

The first mobile communication terminal slave station 2 existing in the first room A has a radio communication section 3 and an antenna 4,
The wireless communication unit 3 converts voice information and the like into a high frequency signal, and transmits the high frequency signal on an electric wave through the antenna 4.

In the second room B, there is a second mobile communication terminal slave station 5 and a second relay antenna 26 for transmitting and receiving radio waves. The second relay antenna 2
Reference numeral 6 has a second connector 27, which is attached to the TV antenna terminal 23 and connected to the TV common listening wire 21.

The second mobile communication terminal slave station 5 existing in the second room B has a wireless communication section 6 and an antenna 7,
The wireless communication unit 6 converts voice information and the like into a high frequency signal, and transmits the high frequency signal on an electric wave through the antenna 7.

The first mobile communication terminal slave station 2 and the second mobile communication terminal slave station 2 are connected through the first relay antenna 24, the second relay antenna 26 and the television common listening wiring 21 configured as described above. A method of performing wireless communication with the mobile communication terminal slave station 5 will be described.

The case of transmitting information from the first mobile communication terminal slave station 2 to the second mobile communication terminal slave station 5 will be described. From the wireless communication section 3 of the first mobile communication terminal slave station 2 to the antenna 4. The emitted radio wave is received by the first relay antenna 24 installed in the first room A, and as a high-frequency signal, the second relay antenna installed in the second room B through the television common listening wiring 21. Reach 26.

The second relay antenna 26 emits the arrived high-frequency signal as a radio wave toward the room, and the antenna 7 of the second mobile communication terminal slave station 5 receives the radio wave. The wireless communication unit 6 of the mobile communication terminal slave station 5 is reached.

In this way, the information is transmitted from the first mobile communication terminal slave station 2 to the second mobile communication terminal slave station 5, and the second mobile communication terminal slave station 5 transmits the first mobile communication. The transmission to the terminal slave station 2 follows the reverse of the above-mentioned route.

As shown in FIG. 2, normally, the television co-listening wiring is connected to the television antenna 31, and the television antenna terminal is connected to the television receiver.
Therefore, the TV receiver 32 is connected to the TV antenna terminal 23.
When connecting the relay antenna 27 to the relay antenna 27, first, the distributor 33 is connected to the terminal 23 for the TV antenna, and the distributor 33 is connected.
The television receiver 32 and the relay antenna 27 are connected to. When the distributor 33 is used, both the television receiver and the relay antenna can be connected to one television antenna terminal, so that a new television antenna terminal need not be provided.

[Second Embodiment] FIG. 3 is an explanatory diagram of an in-building wireless communication system. Reference numeral 1 denotes a building having floors, walls, and partitions that shield radio waves. First room A in building 1
When the mobile communication terminal slave station 2 exists in the second room B and the communication master station 41 is installed in the second room B, the wireless communication is performed between the mobile communication terminal slave station 2 and the communication master station 41. explain. A communication master station is a stationary communication terminal that communicates with a mobile communication terminal slave station and is connected to another wired system such as a public telephone line, extension, or transmission line for home security. is there.

Inside the frame of the building 1, the television common listening wiring 2
1 is laid. The television common listening wiring 21 has terminals 22 and 2 for television antennas in the first room A and the second room B.
3

In the first room A, there is a mobile communication terminal slave station 2 and a first relay antenna 24 for transmitting and receiving radio waves. The first relay antenna 24 has a first connector 25, and the first connector 25 is attached to the television antenna terminal 22 so that the television common listening wiring 2 is connected.
Connect with 1.

The mobile communication terminal slave station 2 has a radio communication unit 3 and an antenna 4. The radio communication unit 3 converts voice information and the like into a high frequency signal and puts the high frequency signal on a radio wave through the antenna 4. It is something to send.

A communication master station 41 is provided in the second room B, and the communication master station 41 has a second relay antenna 26 and
It has a second connector 27, a distributor 42, and a communication unit 43. The distributor 42 superimposes transmission / reception of a high frequency signal using the second relay antenna 26 and transmission / reception of a high frequency signal using the second connector 27.

The communication master station 41 attaches the second connector 27 to the terminal 23 for the TV antenna and installs the TV common listening wire 21.
Connect with.

The first relay antenna 24, the communication master station 41 and the television common listening wiring 21 configured as described above.
A method of performing wireless communication between the mobile communication terminal slave station 2 and the communication master station 41 will be described using.

When transmitting information from the mobile communication terminal slave station 2 to the communication master station 41, the wireless communication section 3 of the mobile communication terminal slave station 2 is used.
The radio wave emitted from the antenna 4 through the antenna 4 is received by the first relay antenna 24 installed in the first room A,
It reaches the communication master station 41 installed in the second room B through the television common listening wire 21.

On the other hand, the mobile communication terminal slave station 2 is in the second room B.
In the case of 1, the radio wave emitted from the wireless communication unit 3 of the mobile communication terminal slave station 2 through the antenna 4 is transmitted to the second relay antenna 26 provided in the communication master station 41 installed in the second room B. It is received and reaches the communication master station 41.

As described above, the information is transmitted from the mobile communication terminal slave station 2 to the communication master station 41, and the communication master station 41 is also transmitted.
The transmission from the mobile station to the mobile communication terminal slave station 2 follows the reverse of the above-mentioned route.

Normally, the television common listening wiring is connected to the television antenna, and the television antenna terminal is connected to the television receiver. Therefore, if a distributor is provided between the connector for the relay antenna and the terminal for the TV antenna, or between the connector for the communication master station and the terminal for the TV antenna, one TV antenna terminal receives the TV image. Since it is possible to connect both the device and the relay antenna or the communication master station, it is not necessary to newly provide a terminal for the TV antenna.

In the second embodiment, instead of the distributor in the communication master station 41, switching is performed by adopting a diversity transmission / reception system that monitors the side with a good reception state and performs transmission / reception while switching to the better side. It is also possible to use a container.

Further, in the first embodiment, by using the first mobile communication terminal slave station in the first room and the second mobile communication terminal slave station in the second room, However, the number of rooms and the number of mobile communication terminal slave stations are not limited to two, and three or more rooms or three or more mobile communication terminal slave stations can also be used in the present invention. The in-building wireless communication system of the invention is applicable.

Similarly, in the second embodiment, the mobile communication terminal slave station is used by using the first mobile communication terminal slave station in the first room or the second room and the communication master station in the second room. However, the number of rooms is not limited to two, three or more rooms may be used, and there are multiple mobile communication terminal slave stations. However, the in-building wireless communication system of the present invention can be applied.

Further, although the relay antennas described in the first and second embodiments do not amplify the radio wave, for example, the radio wave amplifying means may be provided between the relay antenna and the connector. By providing the radio wave amplifying means, the radio wave can be prevented from being attenuated, and the radio wave can be transmitted and received more reliably.

[0043]

Since the in-building wireless communication system of the present invention is configured as described above, in the invention of claim 1, the radio wave emitted by the first mobile communication terminal slave station is The one relay antenna receives the radio wave, and the radio wave is transmitted to the second relay antenna through the television common wiring, and the second relay antenna emits the radio wave indoors to generate the second mobile communication. Since the terminal slave station receives the radio wave, wireless communication is possible between mobile communication terminal slave stations trying to communicate with each other without being obstructed by a shield existing between them, without installing a dedicated cable. It is possible to provide a wireless communication system in a building.

According to the second aspect of the present invention, the radio wave emitted from the mobile communication terminal slave station is received by the relay antenna, and the radio wave is transmitted to the communication master station through the television common listening wiring. A wireless communication system in a building that enables wireless communication between a mobile communication terminal slave station and a communication master station attempting to communicate with each other without being obstructed by a shield existing between them There is an effect that it can be provided.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a first embodiment of an in-building wireless communication system of the present invention.

FIG. 2 is an explanatory diagram of an in-building wireless communication system when a distributor is added to the above embodiment.

FIG. 3 is an explanatory diagram showing a second embodiment of the in-building wireless communication system of the present invention.

FIG. 4 is an explanatory diagram showing an example of a conventional wireless system.

FIG. 5 is an explanatory diagram showing another example of a conventional wireless system.

[Explanation of symbols]

 2 1st mobile communication terminal slave station 5 2nd mobile communication terminal slave station 21 Television co-listening wiring 24 1st relay antenna 26 2nd relay antenna 41 Communication master station

Claims (2)

[Claims] 1. A first mobile communication terminal slave station existing in a first room for transmitting and receiving radio waves in a building having a floor, a wall, and a partition that shields radio waves, and radio waves transmitted and received in a second room. In the in-building wireless communication method with the second mobile communication terminal slave station, which is connected to the television common listening wiring laid across each room on each floor, and the television common listening wiring connected to the first room A first relay antenna for transmitting and receiving radio waves to and from the first mobile communication terminal slave station, and the second room connected to the television common listening wiring, A second relay antenna for transmitting and receiving radio waves to and from the two mobile communication terminal slave stations, and of the radio waves between the first mobile communication terminal slave station and the second mobile communication terminal slave station. Transmission / reception is performed via the first relay antenna, the TV common listening wire, and the second relay antenna. In-building wireless communication system characterized by 2. An in-building wireless communication system between a mobile communication terminal slave station and a communication master station for transmitting and receiving radio waves in a building having a floor, a wall, and a partition that shields radio waves. The installed television co-listening wiring, a first mobile communication terminal slave station that is present in the first room and transmits and receives radio waves, and is provided in the first room connected to the television co-listening wiring, A first relay antenna for transmitting and receiving radio waves to and from the first mobile communication terminal slave station, and a second relay antenna for transmitting and receiving radio waves provided in the second room connected to the television common listening wiring. A communication master station equipped with an antenna is provided, and transmission and reception of radio waves between the first mobile communication terminal slave station and the communication master station are performed.
An in-building wireless communication system characterized in that it is carried out via a first relay antenna and a television common wiring.