JPH1094024A - Communication time extension system in digital mca system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To continue communication even when a data non-communication state continues in the radio equipment or information terminal of a transmission side or a reception side at the time of performing data communication in a digital MCA system by transmitting continuation signals from a reception side MCA radio equipment to an opposite radio equipment. SOLUTION: Cable section transmission data are transmitted from a transmission side information terminal l to a transmission side data adapter 2 and stored in a transmission side data buffer 3. By the instruction of a transmission side data adapter control part 4, radio section transmission data are received from a transmission side MCA radio equipment 5 through a digital MCA control station 6 in the reception side MCA radio equipment 7. They are tentatively stored in a reception side data buffer 9 and converted into radio section reception data and cable section reception data. Then, by the instruction of a reception side data adapter control part 10, they are transmitted to a reception side information terminal 11. When input monitoring time-out is detected, the continuation signals are automatically transmitted to a reception data adapter 8 and the data communication of a radio section is continued.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital MCA system, and more particularly to a communication time extension method in a digital MCA system.

[0002]

2. Description of the Related Art Conventionally, the communication time of a digital MCA system is limited, and when data communication is performed by MCA radio, even if an end signal is not received from the communicating information terminal, When the data non-communication time becomes a predetermined time, for example, 5 seconds or more, the data communication ends. Here, this predetermined time is referred to as a “non-communication time period”.

However, when information terminals are communicating with each other in the digital MCA system, it takes time to perform processing in any of the information terminals, and a data non-communication state exceeding the non-communication time limit may continue. In such a case, there is a problem that the data communication is terminated even though the user still wants to continue the communication, and the user has to reconnect.

Japanese Patent Laid-Open Publication No. Sho 63-206040 discloses a communication system which operates so that data communication does not seem to be interrupted. The method described in this publication is based on a dynamic channel that dynamically allocates a communication channel to an MCA communication device when a non-communication state without data transmission and reception continues for a predetermined time or more during data communication. Detecting by the allocating means, emulating the terminal connected to the central processing unit for data communication and the MCA terminal device to hold the line, releasing the communication channel for other communication, When transmission from the terminal is started from the terminal, this is detected by the channel management means, and any available communication channel is reconnected by the dynamic channel allocating means so that data communication is apparently performed. Things.

[0005]

SUMMARY OF THE INVENTION The above-mentioned JP-A-63-2
In the method described in Japanese Patent Application Laid-Open No. 06040, an arbitrary communication channel which is vacant is reconnected by the dynamic channel allocating means so as to operate so that data communication does not seem to be interrupted. When you reconnect any channel,
Since the communication link must be re-established, there is a problem that the data communication time is wasted.

[0006] The present invention has been made in view of the above points, and when performing data communication in a digital MCA system, time is required for processing or the like in either a transmitter or a receiver of a radio or an information terminal. It is an object of the present invention to provide a communication time extension method in a digital MCA system in which communication can be continued even when a data non-communication state longer than a non-communication time period continues.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a digital MCA system in which a transmitting MCA radio and a receiving MCA radio perform data non-communication time. The communication time is extended by transmitting a continuation signal from the transmitting MCA radio or the receiving MCA radio to the partner radio before the non-communication time is reached.

The communication time extension method in the digital MCA system of the present invention is such that the non-communication time caused by the processing time of the transmitter or the receiver radio or the information terminal continues before the non-communication time limit in the digital MCA system. By transmitting the signal, the communication time can be extended.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.

FIG. 1 shows a digital MC to which the present invention is applied.
It is a block diagram of A system.

In the case of data communication in the digital MCA system, data from the transmitting side information terminal 1 is temporarily stored in the transmitting side data buffer 3 of the transmitting side data adapter 2, and the transmitting side data adapter control section 4 instructs the transmitting side to transmit data. M
The data is received by the receiving MCA wireless device 7 from the CA wireless device 5 via the digital MCA control station 6 and temporarily stored in the receiving data buffer 9 of the receiving data adapter 8. It is configured to send data to the information terminal 11.

Next, the operation of this embodiment will be described.

FIG. 2 is a sequence diagram of a communication time extension method in the digital MCA system of the present invention.

[0014] The transmission-side information terminal 1 transmits the wired section transmission data 12 to the transmission-side data adapter 2, stores it in the transmission-side data buffer 3, and transmits the wireless section transmission data 13 in accordance with the instruction of the transmission-side data adapter control unit 4. Via the digital MCA control station 6 from the receiving side MC
A: Received by the wireless device 7, temporarily stored in the receiving data buffer 9 of the receiving data adapter 8, converted the wireless section receiving data 13 into the wired section receiving data 12, and received by the instruction of the receiving data adapter control unit 10. To the local information terminal 11. Immediately after transmitting the wireless section transmission data 13 from the transmission data adapter 2, the input monitoring timer 14 of the transmission data adapter control unit 4 is started, and the monitoring timer immediately before the non-communication time period 15 (for example, 5 seconds) in the digital MCA system is started. The input monitoring timer out 16 is provided. The transmission side data adapter control unit 4 sets the input monitoring timer out 16
Is detected, the continuation signal 17 is automatically transmitted from the transmitting data adapter 2 to the receiving data adapter 8, and the data communication in the wireless section is continued.

In the present embodiment, the continuation signal is transmitted from the transmission data adapter to the reception data adapter, but the continuation signal may be transmitted from the reception data adapter to the transmission data adapter.

[0016]

As described above, according to the present invention,
By monitoring the non-communication time limit in the digital MCA system and transmitting a continuation signal before the non-communication time limit elapses, the communication time can be extended. As a result, it becomes possible to extend the wireless section data communication time.

[0017] Therefore, communication can be continued even when a data non-communication state longer than a non-communication time period continues due to a processing time of a radio device or an information terminal on the transmission side or the reception side.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a digital MCA system to which the present invention is applied.

FIG. 2 is a sequence diagram of a communication time extension method in the digital MCA system of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 transmitting information terminal 2 transmitting data adapter 3 transmitting data buffer 4 transmitting data adapter control unit 5 transmitting MCA wireless device 6 digital MCA control station 7 receiving MCA wireless device 8 receiving data adapter 9 receiving data buffer 10 Receiving-side data adapter control unit 11 Receiving-side information terminal 12 Wired section transmission data 13 Wireless section transmission data 14 Input timer start 15 Digital MCA communication time limit 16 Input monitoring timer out 17 Continue signal

Claims (3)

[Claims] 1. When a transmitting-side MCA radio and a receiving-side MCA radio are communicating with each other by a digital MCA system, the transmitting-side MCA radio or the receiving-side MCA radio before the data non-communication time reaches a non-communication time limit. A communication time extension method in a digital MCA system, wherein a communication time is extended by transmitting a continuation signal from an MCA radio to a partner radio. 2. When the transmitting MCA radio and the receiving MCA radio are communicating by the digital MCA system, the receiving from the transmitting MCA radio before the non-communication time reaches the non-communication time limit. A communication time extension method in a digital MCA system, wherein a communication time is extended by transmitting a continuation signal to a side MCA radio. 3. A digital MCA system having a transmitting side MCA radio and a receiving side MCA radio, wherein a transmitting side information terminal connected to the transmitting side MCA radio and a receiving side connected to the receiving side MCA radio. A non-communication time measuring means for measuring a non-communication time of communication between the transmitting MCA radio and the receiving MCA radio, comprising: Continuation signal transmission instructing means for instructing the transmitting side MCA radio to transmit a continuation signal before the non-communication time measured by the time measuring means exceeds the non-communication time limit of the digital MCA system, The transmitting MCA radio includes a continuation signal transmitting means for transmitting a continuation signal to the receiving MCA radio in accordance with an instruction from the continuation signal transmission instructing means. Digital MCA system.