JPH10145289A - Portable telephone repeater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable telephone repeater where a line is effectively used by noticing that the place where a portable telephone repeater is installed is a radio wave blind zone and contrives the effective use of a line and positively utilizing that. SOLUTION: This repeater is additionally provided with a synthesizer 7, a data-transmitting device 11, a telephone line dedicated connecting device 12, etc. The device 11 outputs a private branch broadcasting signal 25 (signal that is related with a message that is sent via a subscriber's telephone set 13 via a public line 26, a dedicated cable telephone line 28, etc.) which utilizes a frequency channel, except the frequency channel that is assigned to a radio wave zone to which a terminal building 1 belongs. A transmitting and receiving antenna 4 transmits the signal 25 inside the building 1, and many portable telephone terminals 5 in the building 1 individually receive the signal 25.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio base station in one radio zone of a mobile phone service area composed of a plurality of radio zones, and a mobile phone terminal in a radio wave dead zone in the radio zone. More particularly, the present invention relates to a mobile telephone relay device that relays a wireless telephone line between the mobile telephone device and the mobile telephone relay device, and more particularly to a mobile telephone relay device that actively utilizes the fact that the mobile telephone relay device is installed in a radio wave insensitive zone to effectively use the line.

[0002]

2. Description of the Related Art Conventionally, while in a certain radio zone,
In order to enable mobile phone terminals to be used with high line quality even in a radio wave blind zone where radio waves from the wireless base station in the wireless zone do not reach, for example, in a terminal building built in the wireless zone, the mobile phone relay is performed. Devices have been used. FIG. 3 shows the configuration of the mobile phone relay device in relation to the wireless base station, the mobile phone terminal, and the like. That is, the mobile phone relay device including the mobile phone relay device main body 2 and the transmission / reception antennas 3 and 4 is located in a certain radio zone, but is in a radio wave dead zone where radio waves from the radio base station 14 in that radio zone do not reach. Building, for example, installed in the terminal building 1,
The transmitting / receiving antenna 3 is provided outside the terminal building 1, for example, on the outer wall of the terminal building 1, and faces the radio base station 14, and the transmitting / receiving antenna 4 is provided inside the terminal building 1. , The mobile phone terminal 5 in the terminal building 1 (only one is shown in the figure, but not limited to one). The mobile phone relay device body 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 up-link amplifier 8 and an up-link amplifier 10 respectively inserted and connected to the up-link transmission line.

When the above-mentioned portable telephone relay device is installed in the terminal building 1, the terminal building 1
Even when the inside is in the radio wave insensitive zone as described above, the relay apparatus downlink reception wave 21 from the wireless base station 14 is received by the transmission / reception antenna 3 outside the terminal building 1 and corresponds to the relay apparatus downlink reception wave 21. An electrical signal to be transmitted (i.e., a relay apparatus downlink reception signal, and in this specification, when given a code, is given the same code as the relay apparatus downlink reception wave 21 and described as a relay apparatus downlink reception signal 21), After 6,
The signal is amplified by the downlink amplifier 8, transmitted through the antenna duplexer 9, transmitted from the transmission / reception antenna 4 into the terminal building 1 as a relay apparatus downlink transmission wave 22, and the mobile phone terminal 5 can receive the relay apparatus downlink transmission wave 22. Become. In addition, the relay apparatus uplink reception wave 23 transmitted from the mobile phone terminal 5 is received by the transmission / reception antenna 4, and an electric signal corresponding to the relay apparatus uplink reception wave 23 (that is, the relay apparatus uplink reception signal; In the description, when a reference numeral is given, the same reference sign as that of the repeater uplink reception wave 23 is given and the repeater uplink reception signal 23 is written). The signal is amplified by the uplink amplifier 10 through the antenna duplexer 9 and is amplified by the antenna duplexer 6. The signal is transmitted from the transmitting / receiving antenna 3 to the wireless base station 14 as a relay apparatus uplink transmission wave 24. As described above, by interposing the mobile phone relay device, the mobile phone terminal 5 and the wireless base station 14 in the terminal building 1 which is in a radio wave insensitive zone.
Thus, high line quality can be ensured even between the two (that is, the inside of the terminal building 1 is not substantially a radio wave insensitive zone).

[0004]

As described above, the conventional portable telephone relay device sets a radio wave insensitive zone in a certain wireless zone in the same manner as another general zone in the wireless zone. It was only a change to a space where a line could be secured with a radio base station, and did not actively utilize the fact that the inside of the above radio wave insensitive zone was isolated from the outside with respect to radio waves. .

[0005] On the other hand, a building that can be a radio wave insensitive zone is generally a huge building, such as a terminal building or an airport building that is used by many people.
In a building used by such a large number of people, generally, many messages to be conveyed to a specific person or a person of a specific group (for example, "Mr. Tanaka. Suzuki takes about 20 minutes longer than the appointment time) "Let's be late." Or "A company. We will change the meeting place to the central exit." Such a service is provided, for example, by a private broadcast using a speaker. However, there is an inconvenience for the user of the service that once the user listens to the private broadcast, he must wait until the next broadcast timing. In consideration of such circumstances, when the above-mentioned user in the building as described above makes a call with a predetermined telephone number using the portable telephone terminal possessed by each, the wireless base station sends the call to the portable telephone terminal. It would be very convenient if there was an individual broadcast system for message notification such that each message was sent.

However, in the individual broadcasting system as described above, considering that a large number of persons in the building use their own portable telephone terminals and use the system at the same time, in this case, Of the number of frequency channels are used, and the number of the above-mentioned persons is a member of a specific organization (for example, the message is "Company A. The meeting place will be changed to the central exit." ), The same message is transmitted in each frequency channel, and the use of the line is useless, and is not practical.

[0007] Further, a person who wants to send a message to a person in the above-mentioned building using the above-mentioned individual broadcasting system can use a general subscriber telephone in his / her vicinity to send the message. The present invention, which is extremely convenient to send,
It was made in view of the circumstances as described above, and a mobile telephone relay device to which a function that positively utilizes that the installation place is a radio wave insensitive zone is added, that is, while aiming for effective use of the line, It is an object of the present invention to provide a mobile phone relay device or the like to which a function capable of using a mobile phone terminal for individual notification of a message in a radio wave insensitive zone is added.

[0008]

According to the first aspect of the present invention, a radio base station in one radio zone of a cellular phone service area composed of a plurality of radio zones and a radio base station in a radio zone in the radio zone. A mobile telephone relay device for relaying a wireless telephone line between the mobile telephone terminal and the mobile telephone terminal is configured as follows. That is, it is installed outside the above-mentioned radio wave dead zone,
A first transmitting / receiving antenna facing the wireless base station, a first antenna duplexer connected to the first transmitting / receiving antenna, and a first antenna duplexer installed in the radio wave dead zone and facing the mobile phone terminal; A second transmitting and receiving antenna, a second antenna duplexer connected to the second transmitting and receiving antenna, and the other end of a dedicated wired telephone line having one end connected to the radio base station, which will be described later. And a private line connection device for inputting private broadcast data transmitted from the wireless base station via the dedicated wired telephone line to the data transmission device, and The private broadcast data sent via the dedicated wired telephone line and the dedicated telephone line connection device is input, and one of the channels other than the frequency channel assigned to the wireless zone is input. A data transmission device that transmits a modulated wave electric signal related to the private broadcast data using a frequency channel, and inserted into a downlink transmission line between the first antenna duplexer and the second antenna duplexer. Are connected, the modulated electric signal transmitted from the data transmitting device is combined with the relay device downlink received signal transmitted from the first antenna duplexer, and the combined signal is obtained by the combining. And a combiner for sending the combined electric signal to the second antenna duplexer.

According to the second aspect of the present invention, a wireless base station in a certain wireless zone, a portable telephone terminal in a radio wave insensitive zone in the radio zone, and a mobile phone according to claim 1 used in the radio wave insensitive zone. The individual broadcasting system including the telephone relay device is as follows. That is, when a specific call is made from the mobile phone terminal, the call is sent to the wireless base station via the mobile phone relay device by a control channel, and the wireless base station makes the call. In response, the mobile phone relay device transmits a specific control signal to the mobile phone terminal through the control channel through the control channel, and the mobile phone receives the control signal and stops transmitting operation. The receiving frequency channel is fixed to the frequency channel used in the data transmitting device of the portable telephone relay device, and the receiving is performed on the frequency channel.

According to the third aspect of the present invention, the individual broadcasting system is configured as follows. That is, a wireless base station in one wireless zone of a mobile phone service area composed of a plurality of wireless zones, a mobile phone terminal in a radio wave dead zone in the radio zone, and a radio base station used in the radio wave dead zone A mobile telephone relay device according to claim 1, a dedicated wired telephone line connecting the telephone line dedicated connection device of the mobile telephone relay device and the wireless base station, and a subscriber telephone;
A public telephone line connecting the subscriber telephone and the radio base station, and when a message of a predetermined format is sent from the subscriber telephone to the radio base station via the public telephone line, The private base station broadcast data based on the message is supplied from the wireless base station to the data transmission device via the dedicated wired telephone line and the dedicated telephone line connection device, and a specific transmission data is transmitted from the mobile phone terminal. When a call is made, the call is sent to the wireless base station via the mobile telephone relay device via the control channel, and the wireless base station receives the call and receives the call via the mobile telephone relay device. Transmitting a specific control signal to the mobile phone terminal through the control channel,
After receiving the control signal and stopping the transmission operation, the mobile phone fixes the reception frequency channel to the frequency channel used in the data transmission device of the mobile phone relay device, and Receive now.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be specifically described based on one embodiment of the present invention. FIG. 1 shows the configuration of the mobile phone relay device 2 according to the above embodiment in relation to the wireless base station 14 and the mobile phone terminal 5 in the terminal building 1 which is in a radio wave insensitive zone.
In FIG. 1, circuit portions having the same configuration and the same functions as those of the circuit portion in FIG. 3 showing a conventional example are denoted by the same reference numerals, but description of these circuit portions is omitted. .

The telephone line dedicated connection device 12 has a dedicated wired telephone line 28 having one end connected to the radio base station 14.
Is a connection circuit for connecting the other end to the data transmission device 11 described later. The data transmission device 11 is connected to the radio base station 14.
And private broadcast data (message data) transmitted via the dedicated wired telephone line 28 and the telephone line dedicated connection device 12 from the dedicated wireless telephone line 28 and one frequency channel other than the frequency channel assigned to the wireless zone. Is a circuit unit that modulates the carrier wave according to the above-mentioned private broadcast data and sends out the obtained modulated wave electric signal as a private broadcast signal 25 (FIG. Is described).

The combiner 7 combines an electric signal corresponding to the repeater receiving wave 21 transmitted via the antenna duplexer 6 and a private broadcast signal 25 from the data transmitting device 11 and combines the signals. This is a circuit unit that sends out the obtained electric signal to the down-link amplifier 8. Also, the subscriber telephone 1
Reference numeral 3 denotes a telephone capable of sending a message to the wireless base station 14 via the public line 26.

The operation of the present embodiment configured as described above will be described. First, the operation at the time of transmission and reception between the wireless base station 14 and the mobile phone terminal 5 using the frequency channel allocated to the terminal building 1 in a certain wireless zone will be described. In this case, similarly to the conventional example shown in FIG. 3, the relay apparatus downlink reception wave 21 is received from the wireless base station 14 by the transmission / reception antenna 3, and the electric signal corresponding to the relay apparatus downlink reception wave 21 is shared by the antenna. Down-link amplifier 8 through the filter 6 and the combiner 7
, And is transmitted from the transmitting / receiving antenna 4 through the antenna duplexer 9 as a relay apparatus downlink transmission wave 22, and the mobile phone terminal 5 receives it. In addition, the relay apparatus uplink reception wave 23 transmitted from the mobile phone terminal 5 is received by the transmission / reception antenna 4, and the relay apparatus uplink reception wave 2
The electric signal corresponding to 3 is amplified by the uplink amplifier 10 through the antenna sharing device 9, and is amplified through the antenna sharing device 6,
The signal is transmitted from the transmitting / receiving antenna 3 to the wireless base station 14 as a relay apparatus uplink transmission wave 24.

Next, the operation of receiving the broadcast of the message using the mobile phone terminal 5 will be described with reference to the time chart of FIG. The message message sent to the wireless base station 14 via the public line 26 using the subscriber telephone set 13 is converted into private broadcast data (message data) in a predetermined format by the wireless base station 14, The data is provided to the data transmission device 11 via the dedicated wired telephone line 28 and the telephone line dedicated connection device 12. The private broadcast data (not limited to one) provided to the data transmission device 11 in this manner is a private broadcast using a carrier related to one frequency channel other than the frequency channel allocated to the wireless zone. As shown in FIG. 2A, the signal 25 is sequentially and continuously transmitted from the data transmission device 11. Then, the local broadcast signal 25 transmitted from the data transmission device 11 is
The signal is transmitted to the terminal building 1 via the downlink amplifier 8, the antenna duplexer 9, and the transmission / reception antenna 4, similarly to the relay apparatus downlink transmission wave 22.

When receiving the individual broadcast of the message using the portable telephone terminal 5 in the terminal building 1, the private broadcast receiving telephone number displayed at each place in the terminal building 1 as a broadcast receiving desired code. Is input to the mobile phone terminal 5 by operating a key or the like. As a result of the call based on the operation, first, the transmission output of the mobile telephone terminal 5 uses the control channel as shown in FIG. The signal is given to the wireless base station 14 via the antenna 10, the duplexer 6, and the transmitting / receiving antenna 3. In response, the radio base station 14 connects a control channel line with the mobile phone terminal 5 as shown in FIG. Next, the mobile phone terminal 5 receives the connection of the control channel line.
Transmits a broadcast reception desired code to the wireless base station 14 as shown in FIG. The radio base station 14 receives the broadcast reception request code and sends a broadcast reception instruction to the mobile phone terminal 5 to change the frequency channel received by the mobile phone terminal 5 to the frequency channel used by the data transmission device 11 (ie, Fixed to one frequency channel other than the frequency channel assigned to the wireless zone) and
The transmission operation of the mobile phone terminal 5 is stopped. As a result, the mobile phone terminal 5 is fixed to the broadcast reception only mode, and the wireless base station 14 recognizes the above state of the mobile phone terminal 5 from the decrease in the reception level due to the stop of the transmission operation of the mobile phone terminal 5, and The control channel line is disconnected as shown in FIG.

With the above operation, the portable telephone terminal 5 in the broadcast reception only mode is in a state of exclusively receiving the private broadcast signal 25 transmitted from the transmitting / receiving antenna 4 into the terminal building 1 as described above. Thus, the person carrying the mobile phone terminal 5 can very easily recognize each message message continuously transmitted from the data transmission device 11, as shown in FIG. in this case,
Each of the above message messages is, as shown in FIG.
Since it is repeatedly transmitted and broadcast, even if the user listens once, it can be easily recognized by the next broadcast (the mobile phone terminal 5 is returned to the normal mobile phone function mode). In some cases, the user may perform an operation for setting the device in a normal standby state.)

In addition, by the above-described operation and operation, a large number of mobile telephone terminals 5 in the terminal building 1 can simultaneously receive the indoor broadcast signal 25 as described above. Can simultaneously recognize the message message as described above. However, since the inside of the terminal building 1 is in a radio wave insensitive zone, that is, the inside of the terminal building 1 is isolated from the outside of the terminal building 1 with respect to radio waves, the in-house broadcast signal 25 leaks out of the terminal building 1 and there is a problem. It cannot happen. Therefore, in a number of buildings in the same wireless zone, the same frequency channel as that used by the data transmission device 11 can be used repeatedly by using the above-described mobile telephone relay device. is there. As described above, according to the present invention, the mobile phone relay device is installed in a radio wave insensitive zone, and the radio zone to which the installation site belongs is assigned a frequency that is not originally allocated. By using the channel (that is, while effectively utilizing the line), it is possible to individually broadcast the message message in the radio wave insensitive zone.

[0019]

As described above in detail, according to the present invention, a portable telephone relay apparatus to which a function for positively utilizing the fact that the installation place is in a radio wave insensitive zone is added,
That is, a mobile telephone relay device having a function of enabling a mobile telephone terminal to be used for individual broadcast of a message message in a radio wave insensitive zone while effectively utilizing a line, and an individual broadcasting system using the mobile telephone relay device Can be provided.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of an embodiment of the present invention.

FIG. 2 is a time chart showing the operation of the embodiment.

FIG. 3 is a diagram showing a conventional example.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 terminal building 2 mobile phone relay device 3 transmitting / receiving antenna 4 transmitting / receiving antenna 5 mobile phone terminal 6 antenna duplexer 7 synthesizer 8 downlink amplifier 9 antenna duplexer 10 uplink amplifier 11 data transmission device 12 telephone line dedicated connection device 14 wireless base Station 21 Relay device downlink reception wave 22 Relay device downlink transmission wave 23 Relay device uplink reception wave 24 Relay device uplink transmission wave 25 Private broadcast signal 26 Public line

Claims (3)

[Claims] 1. A wireless telephone between a wireless base station in one wireless zone of a mobile phone service area composed of a plurality of wireless zones and a mobile phone terminal in a radio wave dead zone in the wireless zone. A mobile telephone relay device for relaying a line, comprising: a first transmitting / receiving antenna that is installed outside the radio wave insensitive zone and faces the wireless base station; and a first antenna that is connected to the first transmitting / receiving antenna. A duplexer, a second transmitting / receiving antenna installed in the radio wave insensitive zone, facing the mobile phone terminal, a second antenna duplexer connected to the second transmitting / receiving antenna, The other end of the dedicated wired telephone line connected to the wireless base station is connected to a data transmission device described later, and a private broadcast transmitted from the wireless base station via the dedicated wired telephone line. And a private line connection device for inputting data to the data transmission device, and the private broadcast data sent from the wireless base station via the dedicated wired telephone line and the telephone line dedicated connection device. A data transmitting device that transmits a modulated wave electric signal related to the private broadcast data by using one frequency channel other than the frequency channel allocated to the wireless zone; The modulated wave electric signal transmitted from the data transmission device and the modulated wave electric signal transmitted from the first antenna duplexer are inserted and connected to the downlink transmission line between the second antenna duplexer. And a combiner for combining the received signal with the relay apparatus downlink signal and transmitting the combined electric signal obtained by the combination to the second antenna duplexer. Mobile phone relay device. 2. A wireless base station in one wireless zone,
An individual broadcasting system comprising a mobile phone terminal located in a radio wave dead zone in the wireless zone and the mobile phone relay device according to claim 1 used in the radio dead zone, wherein a specific call is made from the mobile phone terminal. When the call is sent, the call is sent to the wireless base station via the mobile phone relay device by the control channel, and the wireless base station receives the call and receives the call via the mobile phone relay device. Transmitting a specific control signal to the mobile phone terminal through the control channel, the mobile phone receiving the control signal, stopping the transmission operation, and setting the reception frequency channel to the mobile phone relay device. An individual broadcasting system fixed to a frequency channel used in a data transmission device and receiving on the frequency channel. 3. A radio base station in one radio zone of a mobile phone service area composed of a plurality of radio zones, a mobile phone terminal in a radio zone in the radio zone, and a radio zone in the radio zone 2. The mobile telephone relay device according to claim 1, wherein the mobile telephone relay device is connected to the wireless base station with the dedicated telephone line connecting device, the subscriber telephone, and the subscriber telephone. And a public telephone line that connects the wireless base station to the wireless base station.When a message of a predetermined format is sent from the subscriber telephone to the wireless base station via the public telephone line, The private base station broadcast data based on the message is transmitted from the wireless base station to the data transmission device via the dedicated wired telephone line and the telephone line dedicated connection device. And, when a specific call is made from the mobile phone terminal, the call is sent to the wireless base station via the mobile phone relay device by a control channel, and The base station receives the call, transmits a specific control signal to the mobile phone terminal through the control channel via the mobile phone relay device, and the mobile phone receives the control signal, After the transmission operation is stopped, the reception frequency channel is fixed to the frequency channel used in the data transmission device of the portable telephone relay device, and reception is performed on the frequency channel. system.