JPH06244785A - Radio communication method and mobile radio station - Google Patents

Abstract

PURPOSE:To increase the number of channels and to obtain a mobile radio communication method capable of calling the mobile radio station by making a call signal the radio wave at the low frequency band and making the frequency band for mutual communication a micro wave or mili wave. CONSTITUTION:When either a telephone terminal connected to a fixed radio station section 2 of a fixed radio station 1 or a mobile radio station 11 calls the other mobile radio station 11, a radio station 1 codes the required matter such as transmission sources and ID codes of the other communication parties and modulates it into the radio wave at the low frequency band, sending it from a transmission antenna 3. When accepting the calling signal to a self station by a calling receiver 12, the mobile radio station 11 sets a communication channel by the radio wave at high frequency with the mili wave designated toward the antenna 4 through a mili wave transmission section 13aa and transmission/reception antenna 13b and starts communication. Thus, the number of channels to be required in the future demand can be secured and the stand-by mobile radio stations can be called without fail.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile radio communication method and a mobile radio station which utilize a high frequency band of microwaves or millimeter waves as a frequency band for communication.

[0002]

2. Description of the Related Art A conventional mobile radio communication system uses VHF or UHF as a frequency band, calls a mobile radio station from a fixed radio station side, and a telephone or other device connected to the fixed radio station via the fixed radio station. It is configured to communicate with mobile radio stations and the like.

[0003]

In the conventional mobile radio communication system, VHF is used as a calling and communication frequency band.
Since UHF and UHF are used, even if the antenna of the mobile radio station is an omnidirectional antenna, it is possible to stand by without any inconvenience and communicate. However, since VHF or UHF is used as the frequency band, it is difficult to secure the number of channels for which future demand is expected. Therefore, in order to secure the number of channels for which future demand is expected, it is possible to use the high frequency band of microwave or millimeter wave. As described above, it is difficult to obtain high reception sensitivity and high transmission power for a microwave or a millimeter wave having a wide band and a high frequency, and there is less diffraction that goes around in the shadow of a building or the like.

Therefore, it is desirable to construct a power saving system by using a directional antenna for a mobile radio station, which can obtain a high gain in a place where the line of sight can be obtained. However, if a directional antenna is used for the mobile radio station, it is possible to direct the antenna in the required direction when transmitting from the mobile radio station, but even if a call is received from a fixed radio station while moving, the radio wave will not be emitted. Since it does not diffract, it cannot be received depending on the direction of the antenna, or it becomes more difficult to receive in the shadow of a tall building. For this reason, it is difficult to call the mobile radio station from the fixed radio station side, and the mobile radio station can only transmit.

The present invention has been made to solve the above-mentioned inconvenience, and provides a mobile radio communication method and a mobile radio station which can increase the number of channels and can call a mobile radio station. It is a thing.

[0006]

First, a first invention is a wireless communication method between a fixed wireless station and a mobile wireless station,
The fixed radio station sends out a call signal corresponding to a predetermined mobile radio station in a radio wave of a low frequency band, and when the predetermined mobile radio station receives a call signal to its own station, it sends a micro signal to the fixed radio station. This is a method of establishing communication lines and communicating in the high frequency band of waves or millimeter waves.

Next, a second invention is a mobile radio station utilizing a low frequency band and a high frequency band of a microwave or a millimeter wave, which receives a call signal of a radio wave of the low frequency band, When the own station code is included, a call receiving unit having an informing means for informing the user of the recognition of a call to the own station and at least a storage means for storing the own station code, and a high frequency band of microwave or millimeter wave. Based on the transmitting / receiving section that communicates, the operating section for setting the setting code for calling another mobile radio station or another communication terminal, and the setting code set by this operating section or the data stored in the storage means. And a control unit for controlling the transmission / reception unit to perform a calling operation.

[0008]

First, in the mobile radio communication method according to the first aspect of the invention, when the mobile radio station receives a calling signal in a radio wave of a low frequency band, a microwave or millimeter wave is generated between the mobile radio station and the fixed radio station. Communication is established by opening a communication line in the high frequency band. Next, when the mobile radio station according to the second aspect of the present invention receives the call-out signal and detects the call-out to the own station, the notification means notifies the recognition of the call-out. When making a call, the control unit controls the calling operation based on the setting code set by the operation unit or the data stored in the storage unit.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a block diagram showing a schematic configuration of a mobile radio communication system according to an embodiment of the present invention. In FIG. 1, reference numeral 1 designates a fixed wireless station, a fixed wireless station section 2 to which an ordinary telephone and an information terminal are connected, a public network and a relay network, and a fixed wireless station section 2 connected to the fixed wireless station section 2. It is composed of a plurality of transmitting antennas 3 in the low frequency band of VHF or UHF and a plurality of transmitting / receiving antennas 4 in the high frequency band of microwave or millimeter wave connected to the fixed wireless station 2. The transmission / reception antenna 4 is installed everywhere in the city and is connected to the fixed wireless station 2 by a fiber cable or a fixed wireless communication system.

Reference numeral 11 denotes a mobile radio station, and a paging receiver 12
The transmitting / receiving unit 13, the terminal connecting unit 14 connected to the transmitting / receiving unit 13, the handset 15 as a terminal connected to the terminal connecting unit 14, the dial operation unit 16, and each unit based on each data. It is composed of a control unit 17 for controlling. The call receiving unit 12 receives the radio wave from the transmitting antenna 3, a receiving antenna 12a, a calling receiver 12b connected to the receiving antenna 12a and having a function of detecting an ID code, and an ID code of its own station. Bell 12c as a notification means to be sounded by the call receiver 12b that has detected the call, and a display portion as a notification means for displaying the ID code of the caller from the call receiver 12b that has detected the ID code of its own station and the caller 12d and a storage section 12e that stores the ID code of the caller from the call receiver 12b that has detected the ID code of its own station and that of the caller.

The transmitter / receiver 13 includes a transmitter / receiver 13a,
The transceiver 13a is connected to the transceiver 13a and transmits and receives radio waves to and from the transceiver antenna 4 in a microwave or millimeter wave high frequency band. The transceiver 13a includes a millimeter wave transmitter 13aa. Millimeter wave receiver 13
ab and. Further, the control unit 17 converts the ID code of the own station, the ID code of the transmission source, and the setting code set by the dial operation unit 16 stored in the storage unit 12e into a predetermined format to convert the millimeter wave transmitter 13aa.
To make a call, or stop the ringing of the bell 12c by an off-hook signal from the handset 15.
Display part 1 by on-hook signal from handset 16
The display of the ID code of the sender on 2d is stopped.

Next, transmission / reception will be described. First, when making a call from the mobile radio station 11 side, for example, the setting code set by the dial operation unit 16, that is, the I
D code, ID code of communication partner, and storage portion 12e
Of the own station stored in the storage unit 12e, the ID code of the sender stored in the storage unit 12e, the ID code of the sender and the ID code of the own station or the ID code of the own station to and from the millimeter wave transmitting unit 13aa. A high frequency radio wave with a specified millimeter wave is transmitted to a transmitting / receiving antenna 4 which is directly visible in the city through the antenna 13b, and a communication line is set to connect to a fixed wireless local area 2 such as a local network. Communicate with the other terminal through the telephone network.

Next, when the telephone terminal or the mobile radio station 11 connected to the wired network connected to the fixed radio station 2 calls another mobile radio station 11, the fixed radio station 1 communicates with the ID of the communication partner. Submit the code. Then, the fixed wireless station 1 that has received the ID codes of the transmission source and the communication partner codes necessary items such as the ID code of the transmission source and the communication partner, modulates them into radio waves in the low frequency band, and transmits them from the transmission antenna 3. .

At this time, since the paging receivers 12b of all the mobile radio stations 11 which are not communicating are in the standby state, they receive the calling signal from the fixed radio station 1 and include the ID code of their own station. Check whether or not. When the ID code of the own station is included in the ID code, the call receiver 1
2b causes the bell 12c to ring, causes the display section 12d to display the sender's ID code, and causes the storage section 12e to store necessary items, for example, the sender's ID code.

When the bell 12c is sounded in this way and the ID code of the caller is displayed on the display portion 12d to notify the call to the local station, for example, when the handset 15 is off-hook, the mobile radio As described above, the station 11 sets the communication line to the transmitting / receiving antenna 4 which is directly visible in the city by the designated high frequency radio wave of millimeter wave, and stores its own ID code stored in the storage portion 12e. Alternatively, the ID code of the sender is added to the ID code of the own station and a communication request to the partner terminal is transmitted from the transmitting / receiving antenna 13b. Then, the fixed wireless station 1 receives the communication request from the mobile wireless station 11 and connects the mobile wireless station 11 and the partner terminal. Therefore, the mobile radio station 11 can communicate in response to a call.

As described above, according to the embodiment of the present invention, since the calling signal transmitted from the fixed wireless station 1 to the mobile wireless station 11 is the radio wave in the low frequency band, the calling signal is the shadow of the building. Since the diffraction wraps around, the mobile radio station 11 in the standby state can be reliably called. Since the amount of data that calls the mobile radio station 11 is small, the low frequency band to be used can be narrowed. Further, since the communication frequency band is the high frequency band of millimeter waves, the communication band becomes extremely wide, so that it is possible to secure an extremely large number of channels in anticipation of future increase in demand.

Further, since a high-gain directional antenna can be used as the transmitting / receiving antenna 13b of the mobile radio station 11, a power-saving system is possible, and the mobile radio station 11 is small in size and small in power and highly portable. . By integrating the call receiving unit 12 in the low frequency band and the transmitting / receiving unit 13 for microwaves and millimeter waves, it becomes easier to handle and more convenient than individually carrying and moving. Further, it becomes possible to use the stored data of the call receiving unit 12 to automatically make a calling operation to the other party who has not been able to answer the call before. In this case, the case where an automatic call is made only with the ID code of the own station,
There are cases where a code is added to make an automatic call.

In the above embodiments, the frequency band for communication is described as a millimeter wave, but it goes without saying that it may be a microwave. Then, when the mobile radio station 11 transmits only the ID code of the mobile radio station 11 in response to a call to the mobile radio station 11, the I of the terminal of the communication partner who called the mobile radio station 11
This is effective when the fixed wireless station 1 side stores the D code.

[0019]

As described above, according to the present invention, since the calling signal transmitted from the fixed wireless station to the mobile wireless station is a radio wave in the low frequency band, the calling signal is diffracted around the shadow of the building. As a result, the mobile radio station in the standby state can be reliably called. Since the amount of data that calls the mobile radio station is small, the low frequency band to be used can be narrowed. In addition, since the frequency band for communication is microwave or millimeter wave, the band for communication is extremely wide, so that it is possible to secure an extremely large number of channels in anticipation of future increase in demand.

Further, since a high-gain directional antenna can be used as a transmitting / receiving antenna of the mobile radio station, a power-saving system is possible, and the mobile radio station is small in size and small in power and highly portable. By integrating the call receiving unit in the low frequency band and the transmitting / receiving unit for microwaves and millimeter waves, it becomes easier to handle and more convenient than individually carrying and moving.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a mobile radio communication system according to an embodiment of the present invention.

[Explanation of symbols]

 1 Fixed Radio Station 2 Fixed Radio Station 3 Transmit Antenna 4 Transmit / Receive Antenna 11 Mobile Radio Station 12 Call Receiver 12a Receive Antenna 12b Call Receiver 12c Bell 12d Display 12e Storage 13 Transmitter 13a Transmit / Receive Antenna 13aa Millimeter Wave Transmitter 13ab mm Wave receiver 14 Terminal connection unit 15 Handset 16 Dial operation unit 17 Control unit

Claims (2)

[Claims] 1. A wireless communication method between a fixed wireless station and a mobile wireless station, wherein the fixed wireless station sends a calling signal corresponding to a predetermined mobile wireless station by radio waves in a low frequency band, When the predetermined mobile radio station receives a call signal to itself, it communicates with the fixed radio station by opening a communication line in a high frequency band of microwave or millimeter wave. Wireless communication method. 2. A mobile radio station using a low frequency band and a high frequency band of microwaves or millimeter waves, which receives a calling signal of a radio wave of the low frequency band and includes its own code. If so, a call receiving unit having a notification unit for notifying the recognition of a call to the own station and a storage unit for storing at least the own station code, a transmission / reception unit for communicating in a high frequency band of microwaves or millimeter waves, etc. An operating unit for setting a setting code for calling the mobile radio station or other communication terminal device, and controlling the transmitting / receiving unit based on the setting code set by the operating unit or the data stored in the storage means. A mobile radio station, comprising: