JP2001069068A - Mobile phone relay system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a mobile phone relay system that attains calling of a premises pager in the premises by utilizing the fact that a mobile phone is located a radio wave dead zone. SOLUTION: The mobile phone relay system is provided with a transmission reception antenna 3 that is installed in opposition to a radio base station 14 at the outside of a radio wave dead zone in a radio zone, an antenna multicoupler 6, a transmission reception antenna 4 installed in opposition to a mobile phone terminal 5 within the radio wave dead zone, an antenna multicoupler 9, a distributor 10 provided in an incoming channel transmission line between the antenna multicouplers 6, 9, a premises calling section 13 that extracts a premises calling code from a repeater incoming reception signal from the distributor, uses any of remote zone frequency channels other than a frequency channel assigned to the radio zone to transmit a modulated wave electric signal corresponding to the premises pager calling code, and a synthesizer 7 that transmits the signal resulting from synthesizing the modulated wave electric signal and a repeater outgoing reception signal to the antenna multicoupler 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio communication between a radio base station installed in one radio zone of a mobile phone service area having a plurality of radio zones and a mobile phone terminal in the radio zone. The present invention relates to a mobile telephone relay device for relaying a telephone line, and particularly to an effective use of a line when a mobile telephone terminal is in a radio wave dead zone in the wireless zone.

[0002]

2. Description of the Related Art Conventionally, while in a certain radio zone,
A mobile phone relay device for enabling a mobile phone terminal to be used with high line quality even in a radio wave dead zone where radio waves from a radio base station in the radio zone do not reach, for example, in a building built in the radio zone. Has been used.

FIG. 3 is a block diagram showing the configuration of the above-mentioned portable telephone relay apparatus in relation to the above-mentioned radio base station and the above-mentioned portable telephone terminal. That is, the transmitting and receiving antenna 3
The mobile telephone relay device 2 having the mobile phone relay device 4 and the mobile phone relay device 4 is installed in a building 1 which is in a radio wave insensitive zone where radio waves from the radio base station 14 in the radio zone do not reach even in a certain radio zone.

The transmitting / receiving antenna 3 is installed outside the building 1, for example, on the outer wall of the building 1, and faces the radio base station 14, and the transmitting / receiving antenna 4 is installed inside the building 1. The mobile phone terminal 5 faces the mobile phone terminal 5 in the building 1. Although only one mobile phone terminal 5 is shown in FIG. 1, the number is not limited to one.

The portable telephone relay device 2 includes an antenna duplexer 6 connected to the transmitting / receiving antenna 3, an antenna duplexer 9 connected to the transmitting / receiving antenna 4, and a downlink transmission line between the antenna duplexers 6 and 9. And an uplink amplifier 11 and an uplink amplifier 11 respectively inserted and connected to the uplink transmission line.

[0006] The portable telephone relay device as described above is a building 1
, Even if the inside of the building 1 is in a radio wave insensitive zone, the repeater downstream reception wave 21 from the wireless base station 14 is received by the transmission / reception antenna 3 outside the building 1, The electric signal corresponding to the relay apparatus downlink received wave 21 is amplified by the downlink amplifier 8 via the antenna duplexer 6, and transmitted as the relay apparatus downlink transmit wave 22 from the transmitting / receiving antenna 4 to the building 1 via the antenna duplexer 9. Thus, the mobile telephone terminal 5 can receive the relay apparatus downlink transmission wave 22.

[0007] Further, the relay apparatus uplink reception wave 23 transmitted from the portable telephone terminal 5 is received by the transmission / reception antenna 4, and an electric signal corresponding to the relay apparatus uplink reception wave 23 is transmitted through the antenna duplexer 9. The signal is amplified by the line amplifier 11, transmitted through the antenna duplexer 6, and transmitted from the transmitting / receiving antenna 3 to the radio base station 14 as a relay apparatus uplink transmission wave 24.

As described above, by interposing the mobile telephone relay device 2, high line quality can be ensured even between the mobile telephone terminal 5 and the wireless base station 14 in the building 1 which is in a radio wave insensitive zone. In other words, the inside of the building 1 is substantially no longer a radio wave insensitive zone.

[0009]

As described above, the conventional portable telephone relay device 2 converts the radio wave insensitive zone in a certain radio zone into the radio zone in the same manner as other general zones in the radio zone. It is only a change to a space that can secure a line with the wireless base station in the zone, and it does not actively use the fact that the inside of the above radio wave dead zone is a space isolated from the outside. Was.

[0010] On the other hand, a structure which is a radio wave insensitive zone is generally a large building, for example, a large-scale game facility, an international conference hall, a large exhibition hall, and the like in many cases. In such a building, for example, a teacher who guides a school excursion student who has entered the building may gather. For this purpose, announcements in the field have conventionally been used frequently. However, in such a building, there are many cases where noise is loud or silence is required in many cases. Therefore, it is difficult to surely transmit a collective instruction at an appropriate timing.

By the way, the teacher who leads the school excursion students
In most cases, a mobile phone terminal is carried for emergency contact, and a new function is added by using the normal mobile phone terminal and the above-described conventional mobile phone relay device to transmit the collective instruction as described above. This will be extremely effective if it can be realized.

The present invention has been made in view of the above-described circumstances, and actively utilizes the fact that a mobile phone is in a radio wave dead zone when it is located in a radio wave dead zone in a wireless zone. It is another object of the present invention to provide a mobile telephone relay device capable of calling a premises pager in a premises which is a radio wave insensitive zone.

[0013]

In order to achieve the above object, a portable telephone relay device according to the present invention comprises a wireless base station installed in one wireless zone of a cellular phone service area having a plurality of wireless zones. And a mobile phone relay device that relays a wireless telephone line between a mobile phone terminal located in a building in a radio wave dead zone located in the radio zone and installed outside the radio wave dead zone, and A first transmission / reception antenna installed facing the wireless base station, a first antenna duplexer connected to the first transmission / reception antenna, and the mobile phone terminal installed in the radio wave dead zone , A second transmitting / receiving antenna installed opposite to the second transmitting / receiving antenna, a second antenna duplexer connected to the second transmitting / receiving antenna, and the first antenna duplexer and the second antenna duplexer. A private line paging code for calling a private pager from the mobile phone terminal out of a distributor incoming signal input through the distributor, and a private pager. A private branching unit for transmitting a modulated wave electric signal corresponding to a calling code, and a downlink transmission line between the first antenna duplexer and the second antenna duplexer, wherein A combiner for transmitting a signal obtained by combining the modulated wave electric signal from the device unit and the relay apparatus downlink reception signal from the first antenna duplexer to the second antenna duplexer. Is what you do.

[0014] Further, the private call unit fetches a private call code from the portable telephone terminal using a remote zone frequency channel other than the frequency channel assigned to the wireless zone from the relay apparatus uplink reception signal. Transmitting a modulated electric signal corresponding to the local pager calling code by using one of the frequency channels for the remote zone.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a portable telephone relay device according to an embodiment of the present invention will be described with reference to the drawings. FIG.
1 is a block diagram illustrating a configuration of a mobile phone relay device according to an embodiment of the present invention. 1, the same parts as those of the conventional example shown in FIG. 3 are denoted by the same reference numerals, and the description thereof will be omitted.
As a new code, reference numeral 20 denotes a wireless telephone relay device according to the present embodiment.
And a combiner inserted and connected to a downlink transmission line between the duplexer 6 and the downlink amplifier 8 in addition to the duplexers 6 and 9 and the downlink and uplink amplifiers 8 and 11 as in the conventional example shown in FIG. 7, a distributor 10 inserted and connected to the uplink transmission line between the duplexer 9 and the uplink amplifier 11, and a private pager capable of calling a private pager in the building 1 which is a radio wave insensitive zone. And a unit 13. Also,
Reference numeral 12 denotes a premises pager as a premises paging receiver for configuring a premises pager system. In addition, although the mobile telephone terminal 5 and the private pager 12 are illustrated one by one in the figure, the numbers are not limited, and a plurality may be present.

Here, the private call unit 13 includes:
A plurality of remote zone frequency channels other than the frequency channel allocated to the wireless zone are allocated, and the relay apparatus uplink reception signal 23 sent from the mobile phone terminal 5 via the distributor 10 is input. A private call code using the remote zone frequency channel out of the repeater uplink reception signal 23, and using one of the plurality of remote zone frequency channels, a modulated wave corresponding to the private pager call code. An electric signal is transmitted to the synthesizer 7.

The synthesizer 7 includes an antenna duplexer 6
An electrical signal corresponding to the relay apparatus downlink received wave 21 transmitted via the PBX and the modulated wave electrical signal transmitted from the private call unit 13 are combined, and the electrical signal obtained by the synthesis is down-converted. The signal is sent to the line amplifier 8. The synthesizer 7 has a linear output frequency characteristic and does not transmit a signal having a frequency different from that of the signal to be synthesized. However, in this specification, a synthesizer in the present specification means such a signal.

The on-site pager 12 is exclusively used for the building 1
Paging receiver that is used in the system, and immediately waits for reception as soon as power is supplied, the reception channel is fixed to the remote zone frequency channel, and the reception of a paging signal is awaited. .

The operation according to the present embodiment configured as described above will be described. First, the transmission / reception operation between the wireless base station 14 and the mobile phone terminal 5 using the frequency channel allocated to the wireless zone where the building 1 is located will be described.

In this case, similar to the conventional example shown in FIG.
The relay apparatus downlink reception wave 21 from the wireless base station 14 is received by the transmission / reception antenna 3, and the relay apparatus downlink reception wave 2
The electric signal corresponding to 1 is amplified by the downlink amplifier 8 through the antenna duplexer 6 and the combiner 7, and is transmitted from the receiving antenna 4 through the antenna duplexer 9 to the relay apparatus downlink transmission wave 2.
2 and the mobile phone terminal 5 receives it.

The uplink received wave 23 transmitted from the portable telephone terminal 5 is received by the transmitting / receiving antenna 4, and an electric signal corresponding to the uplink received wave 23 is transmitted through the antenna duplexer 9 to the distributor The signal is divided into two, and one of them is amplified by the uplink amplifier 11, and is transmitted from the transmission / reception antenna 3 to the radio base station 14 as the relay apparatus uplink transmission wave 24 via the antenna duplexer 6. The other distribution output will be described later in the operation of the private branching apparatus unit 13.

FIG. 2 is a timing chart showing the operation of the mobile phone terminal 5 for inputting a local pager calling code and calling the person carrying the local pager 12 corresponding to the calling code. It will be described with reference to FIG. For example, as shown in FIG. 2A, it is assumed that a call signal transmitted by operating an off-hook switch is transmitted from the mobile phone terminal 5 to the wireless base station 14 via a control channel assigned to the wireless zone. Then, the radio base station 14 sends a line connection confirmation signal to the portable telephone invitation terminal 5 via the control channel as shown by b in the figure.

On the basis of this, the person carrying the mobile phone terminal 5 replaces the destination telephone number with the premises instructed to call the premises manager terminal 12 lent when entering the building 1. The pager call code is input by operating the dial key of the mobile phone terminal 5 and transmitted to the wireless base station 14 via the control channel by the same operation as usual (see c in FIG. 2). At this time, the information code (for example, a position code where the person carrying the mobile phone terminal 5 is located: the position code is posted on a nearby pillar) should be added to the premises pager calling code. Can be.

The radio base station 14 confirms the private pager calling code, and sends a control signal to the portable telephone terminal 5 through the control channel as shown by d in FIG. The use line is fixed to one of the remote zone frequency channels (that is, the remote zone line), and re-transmission of the local pager call code is instructed using the remote zone frequency channel. Thereafter, the control channel is disconnected as shown by e in FIG.

The private call unit 13 is normally in a standby state in one of the frequency channels for the remote zone, but a private pager call code from the portable telephone terminal 5 in accordance with an instruction from the radio base station 14. A retransmission is received (see f in FIG. 2). The local calling unit 13 that receives the local pager calling code from the mobile phone terminal 5
Sends out the local pager call code 25 to the local pager terminal 12 in the building 1 by using one of the remote zone frequency channels (see g in FIG. 2). ). Thereafter, the private call unit 13 cuts off the transmission and returns to the standby state (see h in FIG. 2).

When the operations of f and g in FIG. 2 are performed using the remote zone frequency channel, a part of the relay apparatus uplink reception signal 23 is distributed to the distributor 10 and the uplink amplifier 11. , Via the antenna duplexer 6, the transmitting and receiving antenna 3
Is transmitted as radio waves from the transmitting and receiving antenna 3, but in the radio zone where the building 1 is located and the radio zone adjacent to the radio zone, the frequency channel for the remote zone is not used as a base station line. No inconvenience occurs.

[0027]

As described in detail above, according to the present invention,
When the mobile phone terminal is located in the radio wave dead zone in the wireless zone, the mobile phone terminal has a function to call the premises pager from the mobile phone terminal by actively utilizing the radio wave dead zone. Wireless communication in a certain premises can be enabled, and a premises pager can be called from a mobile phone terminal.

[0028] Also, of the relay apparatus uplink received signal, a private call code from a portable telephone terminal using a remote zone frequency channel other than the frequency channel assigned to the radio zone is extracted, and the remote zone frequency channel is extracted. And a private paging unit for transmitting a modulated wave electric signal corresponding to a private pager paging code using one of the above, so that any frequency channel not originally allocated to the radio zone is used to connect to the base station line. It is possible to easily call a premises manager from a mobile phone terminal without giving any inconvenience.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a mobile phone relay device according to an embodiment of the present invention.

FIG. 2 is a time chart for explaining the operation of FIG. 1;

FIG. 3 is a block diagram showing a configuration of a mobile phone relay device according to a conventional example.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 building 2 mobile phone relay device 3 transmitting / receiving antenna 4 transmitting / receiving antenna 5 mobile phone terminal 6 antenna duplexer 7 combiner 8 downlink line amplifier 9 antenna duplexer 10 distributor 11 uplink line amplifier 12 premises paging terminal 13 premises calling unit Reference Signs List 14 radio base station 21 relay apparatus downlink reception wave 22 relay apparatus downlink transmission wave 23 relay apparatus uplink reception wave 24 relay apparatus uplink transmission wave 25 private pager calling code

Claims (2)

[Claims] 1. A wireless base station installed in one wireless zone of a mobile phone service area having a plurality of wireless zones, and a mobile phone terminal located in the wireless zone and located in a building in a radio wave insensitive zone A mobile telephone relay device for relaying a wireless telephone line between the first and second antennas, wherein the first transmitting and receiving antenna is installed outside the radio wave dead zone and is installed so as to face the wireless base station; A first antenna duplexer connected to a transmitting and receiving antenna, a second transmitting and receiving antenna installed in the radio wave dead zone and facing the mobile phone terminal, and connected to the second transmitting and receiving antenna A second antenna duplexer, a distributor provided on an uplink transmission line between the first antenna duplexer and the second antenna duplexer, and a signal input through the distributor. A private call unit for extracting a private call code for calling a private pager from the mobile phone terminal out of the repeater uplink reception signal, and transmitting a modulated wave electric signal corresponding to the private pager call code; A modulated wave electric signal from the private branching unit and a downlink receiving signal from the first antenna duplexer are provided on a downlink transmission line between the antenna duplexer and the second antenna duplexer. And a combiner for transmitting a signal obtained by combining the signal and the signal to the second antenna duplexer. 2. The mobile telephone relay device according to claim 1, wherein the private call unit uses a remote zone frequency channel other than the frequency channel assigned to the wireless zone in the relay device uplink reception signal. A mobile telephone repeater for extracting a local call code from the mobile telephone terminal and transmitting a modulated wave electric signal corresponding to the local pager call code using one of the remote zone frequency channels.