JPS63182924A - Mobile radio communication system - Google Patents

Abstract

PURPOSE:To attain effective utilization of a radio wave by providing coding/decoding circuits of plural kinds provided at each plural service kinds of a public communication network and a synthesis circuit connecting the input/output of a radio transmitter- receiver with the plural kinds of coding/decoding circuits as a connection means between a radio transmitter and a public communication network. CONSTITUTION:In an equipment of a base station, a connection device 13 is connected to a telephone communication network 11 being a public communication network and a digital communication network 12. The connecting device 13 connects to coding/ decoding circuits 14-17 different from the service kind and the coder side terminal is connected to the synthesis circuit 18. The serial signal side terminal of the synthesis circuit 18 is connected to a transmitter-receiver circuit 19. A radio wave is sent in a radio frequency assigned from the transmission/reception circuit 19. Then the coder/ decoder circuits 14-17 having a different function corresponding to the different service class such as telephone(DP, PB, digital), facsimile(G2, G3), telex and data communication are provided. The signal from the coder/decoder circuits 14-17 is a parallel signal, the synthesis circuit 18 converts it into a serial signal and gives the signal to the transmission/reception circuit 19.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a system for connecting a wireless base station connected to a public communication network and a plurality of mobile stations connected to this wireless base station via a wireless communication line. , used for transmission of communications of different service types (telephone, data, facsimile, telex, etc.).

[Conventional technology]

In conventional mobile radio communication systems, even when the base station device is connected to a public communication network, there is basically one type of service per system. That is, in a telephone communication system, data communication signals and facsimile communication signals cannot be transmitted unless they are converted into signals specifically compatible with the telephone communication system.

[Problem that the invention seeks to solve]

Therefore, when communication terminals are provided for multiple service types and communication is performed, it is necessary to subscribe to different systems for each service type.

For this reason, it is disadvantageous in terms of making effective use of radio waves.
The utilization efficiency of wireless communication devices is also poor.

The present invention improves on this, and aims to provide a system that can transmit signals of a plurality of service types using one wireless communication system.

[Means for solving problems]

The present invention provides a wireless communication system comprising a base station device including a wireless transmitting/receiving device connected to a public communication network, and a plurality of mobile station devices connected to the wireless transmitting/receiving device via a wireless line. A plurality of types of code/decoding circuits provided for each of a plurality of service types of the public communication network serve as connection means between the transmitting device and the public communication network, and outputs and inputs of the plurality of types of code/decoding circuits and the wireless transmitting/receiving device. , and a plurality of communication terminal devices of different service types are connected to the plurality of mobile station devices.

[Effect]

Connection between the public communication network and the base station wireless transmitting/receiving device is performed by a code/decoding circuit provided for each service type, and a combining circuit that converts parallel data of the code/decoding circuit and serial data of the transmitting/receiving device. Radio line signals use a common radio frequency and a common base station device for signal transmission of these different service types. The radio link signal includes a predetermined pre-signal and a subsequent information signal. A signal transmitted by a base station device and a radio signal transmitted by a mobile station device each include a code for identifying the service type in a prefix signal thereof. The radio signal received by the base station device is input to an appropriate code/decoder according to the service type of the prefix signal. Further, for calls from the public communication network to the base station device, different subscriber numbers are assigned for each service type, and a coding/decoding circuit is connected in correspondence with the subscriber number. As a result, the correct code/decoder is connected to the transmission signal from the radio base station as well.

In this way, communication signals of multiple service types can be transmitted using common equipment for one radio frequency.

〔Example〕

FIG. 1 is a block diagram of an apparatus according to an embodiment of the present invention. In the base station device, a connection device 13 is connected to a telephone communication network 11 and a digital communication network 12, which are public communication networks. Different code/decoder circuits 14 to 17 are connected to this connection device 13 for each service type, and the code side terminal is connected to a combining circuit 18.
connected to. A serial signal side terminal of the combining circuit 18 is connected to a transmitting/receiving circuit 19. Radio waves are transmitted from the transmitter/receiver circuit 19 on the assigned radio frequency.

Here, the various service types are telephone (DP).

PB, digital), facsimile (G2, G3),
Telex, data communication (200bits/Sec, 1
．． 2 kbit/s, 64 kbit/s HHH
・) etc.

Code/decoder circuits 14 to 17 with different functions are installed corresponding to these different service types.

Mobile station device 21 connected by this radio frequency signal
24 are automobile radio stations, marine radio stations, portable semi-fixed stations, and various other mobile station devices. These mobile station devices are connected as communication terminals such as telephones, facsimile machines, data terminals, etc., one at a time or a plurality of them.

Regarding calls made from the telephone communication network 11 or the digital communication network 12, calls made from these communication networks to the connection device 13 are assigned different subscriber numbers for each service type. For example, telephone (dial pulse > 234-111
1 Telephone (push button dial) 234-222
2 facsimile (G 2) 234
-3333 facsimile (G3)
234-4444 data communication (200bits/5ec
) 234-5555 data communication (1,2kb
it/s) 234-6666, etc.

As a result, when a communication network subscriber dials the correct number for each service type, the correct code/decoding circuit 14-17 with the corresponding function is selectively connected.

Subsequently, when the number of the other party's mobile station device is dialed according to a predetermined procedure, a line is established with the other party's mobile station device on the radio line according to a known selective calling method. Thereafter, the signal illustrated in FIG. 2 is transmitted to communicate with the partner mobile station device.

The signals from the code/decoder circuits 14 to 17 are parallel signals,
The synthesis circuit 18 converts this into a serial signal and sends it to the transmitter/receiver circuit 1.
Give to 9. The signal transmitted from the transmitter/receiver circuit 19 is the third
As illustrated in the figure.

Each mobile station device identifies whether or not the communication is addressed to itself based on the mobile station number, and captures only the communication addressed to itself and sends it to the terminal.

Regarding a call from a mobile station device, when the mobile station device calls the base station according to a known procedure and transmits the signal shown in Figure 2, the base station device identifies the service type and responds accordingly. One of the code/decoder circuits 14 to 17 is selected and connected. As a result, a call is made and a connection is made from the connecting device to the communication mll or 12, and communication is executed.

〔Effect of the invention〕

As described above, according to the present invention, communications of different service types can be transmitted using one mobile radio communication system. This makes it possible to make effective use of radio waves, and has the effect of simplifying the equipment for both the base station device and the mobile station device.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a method according to an embodiment of the present invention. FIG. 2 is a diagram showing an example of wireless signals transmitted and received in the system according to the embodiment of the present invention. FIG. 3 is a diagram showing an example of wireless signals transmitted and received in the system according to the embodiment of the present invention. 11.12...Public communication network, 13...Connection device, 1
4 to 17... Encoding/decoding circuit, 18... Synthesizing circuit, 1
9... Transmission/reception circuit, 21-14... Mobile station device.

Claims (1)

[Claims] (1) In a mobile radio communication system comprising a base station device including a radio transmitting/receiving device connected to a public communication network, and a plurality of mobile station devices connected to this radio transmitting/receiving device via a wireless line, the wireless A plurality of types of code/decoding circuits provided for each of the plurality of service types of the public communication network are used as connection means between the transmitting device and the public communication network, and outputs and inputs of the plurality of types of code/decoding circuits and the wireless transmitting/receiving device are provided. and a combining circuit for connecting a plurality of mobile station devices, wherein a plurality of communication terminal devices of different service types are connected to the plurality of mobile station devices.