JPH08275229A - Indoor service system for portable telephone set - Google Patents

Abstract

PURPOSE: To realize a simple and inexpensive indoor service system for a portable telephone set by distributing a part of energy fed to an antenna installed for an outdoor antenna of a radio station to an indoor. CONSTITUTION: A public base station 9 installed on a roof top is connected to an outdoor antenna 4 as one direction via a distribution 11 at its antenna feeding point and connects to a coaxial cable 7 for an indoor in the other direction. In this case, the antennas 4, 10 are provided for provision for fading to adopt plural diversity reception system. Then the indoor coaxial cable 7 is connected to a coupler 12 via a floor and a ceiling and part of power is fed to an antenna 13 for service on each floor, most of the power is fed to a succeeding floor through the coaxial cable 7 and fed to the antenna 13 of the floor via the coupler 12. Thus, the number of the couplers 12 and the antennas 13 equivalent to the number of floors requiring the service is installed and only the antenna 13 is connected to a final end floor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is a service for mobile phones, typically on floors of buildings where public base stations of PHS (Personal Handy Phone System) are installed or in places where radio waves are hard to reach in underground malls. The present invention relates to an indoor service system of a mobile phone which provides a means for realizing the above.

[0002]

2. Description of the Related Art As a conventional indoor service, it is necessary to provide a wireless base station dedicated to indoor use.

FIG. 2 is a diagram showing a system configuration example of a conventional PHS service system. As shown, the conventional P
The HS service system is composed of a public base station main body 1 connected to a telephone line 2, a transmitter 3, an antenna 4 provided on the roof of a building 5 or the like.

A signal transmitted from the telephone line 2 is processed by the public base station main body 1, transmitted as an electric wave from the antenna 4 through the transmitting section 3, and is carried by people.
The call is received by the S terminal (not shown). Usually, the antenna 4 is provided outdoors, such as on the roof of a building, and is transmitted with a transmission output of 500 mw.

However, although the above method can provide sufficient service when the PHS terminal is outdoors, it cannot communicate when the PHS terminal is in a place where radio waves are difficult to reach in the building or underground mall. become. In order to solve this, it may be possible to install a relay station in each incommunicable place, but there was a problem that the cost increased and the installation work became large-scale.

[0006] Therefore, the applicant is 29 November 1993
"Mobile phone indoor service system" filed for patent on the date
Suggested. The contents will be described with reference to FIG.

[0007] As shown in the figure, in addition to the antenna 4 provided on the roof of the public base station body 1, the transmitter 3, the building 5 and the like connected to the telephone line 2, the outdoor installed near the antenna 4 A relay antenna 6, an indoor relay antenna 8 installed in a place where radio waves are hard to reach, and a coaxial cable 7 for connecting the outdoor relay antenna 6 and the indoor relay antenna 8 are additionally configured. The signal transmitted from the telephone line 2 is processed by the public base station main body 1 and transmitted from the antenna 4 through the transmitting unit 3. The radio wave signal passes through the coaxial cable 7 via the outdoor relay antenna 6, is radiated from the indoor relay antenna 8, and is received by a PHS terminal (not shown) in the vicinity thereof. Therefore, even in places where it is difficult for radio waves to reach
The S terminal can communicate via the indoor relay antenna 8. The same applies when transmitting from a PHS terminal.

[0008]

However, in the case of such a prior application technique, in the case of a building, in order to provide service for each floor, an outdoor relay antenna, a coaxial cable, and an indoor relay antenna are provided for each floor. Required,
Therefore, it is a heavy burden on service providers. In addition, it is necessary to consider a power supply means for each floor to supply power to the antenna.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to eliminate the above problems and provide a simple and inexpensive indoor service system for mobile phones.

In order to solve the above-mentioned problems, the present invention provides a mobile phone wirelessly via a public base station installed indoors or outdoors in a building and connected to a telephone line via an antenna connected to the public base station. In an indoor service system of a mobile phone for service, a distributor is connected to an antenna feeding point of the public base station, one is connected to an outdoor antenna, and the other is connected from the distributor to a coaxial cable on each indoor floor. The coaxial cable is configured to feed power to an indoor antenna by a coupler connected on each floor, and the public base station enables mobile phone service on each floor.

[0011]

According to the above construction, by distributing a part of the energy supplied to the antenna installed for outdoor use of the wireless station indoors, it becomes possible to service the area where the outdoor antenna cannot service. In addition, when adding a service floor or space, it is possible to provide service simply by adding a coupler.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

In the drawings, the same parts are designated by the same reference numerals.

FIG. 1 is an explanatory diagram of a PHS indoor service system to which the present invention is applied. As shown in the figure, in the PHS indoor service system of the present embodiment, the public base station 9 is installed on the roof of a building 5 or the like by integrating the transmitter 3 and the like connected to the conventional telephone line 2. The transmitter 1 may be a separate body as in 3, and the main body 1 may be installed indoors.

The public base station 9 installed on the roof is connected to the antenna feeding point through the distributor 11 in one direction to the outdoor antenna 4 and in one direction to the indoor coaxial cable 7.

To prevent fading, the antenna is provided with the antenna 4 and the antenna 10 to have a plurality of diversity.

The indoor coaxial cable 7 is connected to the coupler 12 through the floor and the ceiling, part of which is fed to the antenna 13 for service on each floor, and most of the coaxial cable 7 is transmitted to the next floor. Power is supplied to the antenna 13 on the floor via the coupler 12. In this way, the coupler 12 and the antenna 13 are installed by the number of floors required for service, and only the antenna 13 is connected to the terminal floor. INDUSTRIAL APPLICABILITY The present invention can be applied to an underground floor, an underground mall, etc. in addition to the inside of a building. The distributor 11 immediately after the base station 9 was used in order to satisfactorily service the floor area, but if the space on each floor is small, it can be realized by using the coupler 12 instead of the distributor 11. .

The signal transmitted from the telephone line 2 is processed by the public base station 9 and transmitted from the antenna 4. The radio wave signal passes through the coaxial cable 7, is radiated from the antenna 13, and is received by a PHS terminal (not shown) in the vicinity thereof. Therefore, even if it is difficult to reach the radio wave in the past, P
The HS terminal can also communicate on each floor. The same applies when transmitting from a PHS terminal.

[0019]

As described above, according to the configuration and method of the present invention, it becomes possible to easily provide the indoor relay service of the mobile phone. Therefore, it becomes possible to provide an indoor service of a mobile phone at a low cost and with a simple construction as the conventional public base station. Also, the floor (space) you want to service can be realized simply by connecting the coupler and extending the coaxial cable. Furthermore, since it also serves as an extension of the antenna power feeding unit, it is not necessary to supply power particularly for floor expansion.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing an indoor service system of PHS according to an embodiment of the present invention.

FIG. 2 is a diagram showing a block configuration example of a conventional PHS service system.

FIG. 3 is a diagram showing a block configuration example of a PHS indoor service system according to the prior application of the present invention.

[Explanation of symbols]

 1 Public Base Station Main Body 2 Telephone Line 3 Transmitter 4 Antenna 5 Building 6 Outdoor Relay Antenna 7 Coaxial Cable 8 Indoor Relay Antenna 9 Public Base Station 10 Antenna 11 Distributor 12 Coupler 13 Antenna

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical indication H04Q 7/26 7/30

Claims (1)

[Claims] 1. An indoor service system for a mobile phone, wherein a public base station installed indoors or outdoors in a building and connected to a telephone line wirelessly services the mobile phone via an antenna connected to the public base station. , A distributor is connected to an antenna feeding point of the public base station, one is connected to an outdoor antenna, and the other is wired from the distributor to each indoor floor via a coaxial cable, and the coaxial cable is Configured to power the indoor antenna by a coupler connected on the floor,
An indoor service system for mobile phones, characterized in that the public base station enables mobile phone services on each floor.