JPH0642751B2 - Mobile radio communication system - Google Patents

Description

The present invention relates to a mobile radio communication system, and more particularly to a mobile radio communication system for registering the location of a mobile station such as a car phone.

[Conventional technology]

The mobile phone can be called regardless of where the mobile station moves as long as the mobile station is within the service range, and the place restriction for communication can be released. In order to receive an incoming call to a mobile station that moves freely, a file for registering the position of the mobile station has been conventionally provided in the exchange, and the corresponding mobile station is called by a radio signal from the registered radio base station. Was there.

[Problems to be Solved by the Invention]

In the above-mentioned conventional mobile radio communication system, as the zone covered by the radio base station becomes smaller, the number of times the mobile station moves to another zone increases, and the frequency of updating the location registration file provided in the exchange. However, there is a problem in that the use of the line from the mobile station to the switching center is increased even though the call is not actually made while the file processing capacity is significantly increased. .

In addition, since location registration is performed in a single file, if this file fails, the entire system will be damaged.

[Means for Solving the Problems]

A mobile radio communication system of the present invention comprises a plurality of mobile stations, a plurality of radio base stations, a switching center, and a plurality of files for recording location registration information of the mobile stations, and when receiving a call to the mobile stations. The number of the mobile station to be received is transmitted from the exchange to the plurality of files in a broadcast mode through a wired line, and the file recording the number of the corresponding mobile station is connected. The radio base station is configured to call the corresponding mobile station by a radio signal.

〔Example〕

 Next, the present invention will be described with reference to the drawings.

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

A call between the mobile station 190 and the wired telephone terminal 101 is performed via any one of a large number of wireless base stations, the car telephone exchange station 110 and the wired network 100 connected to the wireless base station. In addition, calls are also made between mobile stations. A mobile station can make a call as long as it exists in any one of the wireless zones of the installed wireless base stations.

The mobile station is registered in the location registration file installed in the wireless base station, corresponding to the wireless zone to which it belongs. In the example of FIG. 1, the mobile station 190 is registered in the file 141 installed in the radio base station 140.

The specific method of registration is, for example, that the strength of the signal transmitted from each radio base station is measured by the mobile station, and the identification signal of the radio base station is added to the radio base station showing the highest strength before transmission. By doing. When the mobile station moves from the wireless zone of one wireless base station to the wireless zone of another wireless base station, the same operation is performed from the mobile station side to delete the registration from the file of the old wireless zone and create a new one. Register in the wireless zone file.

The operation when the mobile station 190 receives an incoming call from the wired telephone terminal 101 is as follows. When an incoming call request is issued from the wired network 100 to the car telephone exchange station 110, the car telephone exchange station 110 sends the mobile station 1 to the radio base stations 120, 130 and 140 through the wired lines 111, 112 and 113.
The 90 subscriber numbers are similarly transmitted (broadcast mode). In the location registration files 121, 131, 141 installed in the wireless base stations 120, 130, 140, it is determined whether the number of the mobile station 190 broadcast from the car switching center 110 is registered in its own file. Search for. Since the mobile station 190 is registered in the file 141, the file 141 is stored in the car switching center 11
It is transmitted to 0 that the corresponding number is registered.
At the same time, the mobile station 190 is called by a radio signal by a transceiver (not shown) of the radio base station 140. The car telephone exchange station 110 connects the line between the wired telephone terminal 101 and the wireless base station 140 via the wired network 100, and the call is started.

It should be noted that the call originating from the mobile station is no different from the case of the conventional car telephone. In the embodiment described above, the location registration file is provided in each wireless base station, but the same effect can be obtained by providing a single file by combining several wireless base stations.

〔The invention's effect〕

As described above, according to the present invention, since the location registration file is distributed to the wireless base stations, even if the mobile station frequently moves between wireless zones, the file registration is updated for each distributed file. Therefore, the processing capacity for that may be lower than that when concentrated in the car telephone exchange, and since the location registration files are distributed,
Even if a failure occurs, it does not affect the entire system, and since it is not necessary to transmit location registration information between the exchange and the radio base station, the use of communication lines will increase. There is no effect.

[Brief description of drawings]

FIG. 1 is a system conceptual diagram of an embodiment of the present invention. 100 ... Wired network, 101 ... Wired telephone terminal, 110 ... Car telephone exchange, 111, 112, 113 ... Wired line, 1
20, 130, 140 ... Radio base stations 121, 131,
141 ... File, 122, 132, 142 ... Wireless zone.

Claims (1)

[Claims] 1. A mobile station comprising: a plurality of mobile stations; a plurality of radio base stations; an exchange station; and a plurality of files for recording location registration information of the mobile stations, wherein the mobile station receives an incoming call when receiving an incoming call to the mobile station. The mobile station number is transmitted from the exchange station to the plurality of files in a broadcast mode through a wired line, and the file recording the number of the corresponding mobile station is connected to the wireless base station. A mobile radio communication system characterized in that the corresponding mobile station is called by a radio signal.