JP2772253B2 - Mobile communication instantaneous interruption prevention method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication instantaneous interruption prevention system, and more particularly to a mobile communication instantaneous interruption in a mobile communication system such as a portable telephone, a car telephone, a marine telephone, etc., for preventing an instantaneous interruption of communication in an area having poor radio wave conditions. It relates to a disconnection prevention system.

[0002]

2. Description of the Related Art FIG. 5 is a sequence diagram of radio wave disconnection detection in a conventional mobile communication system.

[0005] In a conventional mobile communication system, as shown in FIG. 5, as a system for detecting a radio wave break, a first detection system in which a radio base station 6 detects a radio wave break, and a radio wave break detection in the mobile station 5 side. There is a second detection method for performing the following.

In the first and second detection methods, the reception electric field and the reception quality from the partner station are mutually monitored, that is,
The radio base station 6 monitors the mobile station 5, and the mobile station 5 monitors the radio base station 6. When the level is low or the reception quality is poor for a certain period of time, the radio wave is interrupted. .

[0005] When the radio base station 6 detects the radio wave interruption, it notifies the exchange 7 of a mobile end signal.

Next, FIG. 6 is a flowchart for explaining the electric field monitoring operation of the mobile station and the radio base station in the conventional mobile communication system.

Referring to FIG. 6, the flow starts when a timer (not shown) of a mobile station or a radio base station times out every 0.1 second (step S801).

When the received electric field value is smaller than the threshold value (Y in S802), a radio wave interruption determination counter (not shown)
Is incremented by 1 (S803), and when the received electric field value is equal to or greater than the threshold value (N in S802), the radio wave interruption determination counter is set to 0 (S804).

If the radio wave interruption determination counter fails to continuously receive the electric wave for 5 seconds or more (Y in S805), the radio wave transmission is stopped (S806), assuming that the radio wave is interrupted.

As a result, the mobile station outputs a busy tone to the handset, and the radio base station outputs a mobile end call to the exchange (S807).

If N is determined in S805, that is, if the radio wave interruption determination counter receives a radio wave within 5 seconds, the process ends (S808).

Next, FIG. 7 is a flowchart for explaining the reception quality monitoring operation of the mobile station and the radio base station in the conventional mobile communication system.

Referring to FIG. 7, this flow starts every time the mobile station or the radio base station receives one frame (S901).

Then, the number of received frames is incremented by one (S90).
2) It is determined whether the frame is normal, and if the frame is normal (Y in S903), the normal counter is incremented by 1 (S904).

Here, when the number of frames normally received during 24 frames of the synchronization signal of 8 seconds (Y in S905) is 8 frames or less (Y in S906), transmission is stopped on the assumption that radio waves are interrupted (S907). .

As a result, the mobile station outputs a busy tone to the handset, and the radio base station outputs a mobile end call to the exchange (S908).

If N in S905, that is, if the number of received frames is 24 or less, the process ends.

When the normal counter exceeds 8 frames ,
When the frame is normally obtained (N in S906) , the number of received frames and the normal counter are cleared to 0 (S9).
09) The process ends.

[0019]

In this conventional radio wave disconnection detection method, the time is fixed at 5 to 8 seconds.
There has been a problem that the mobile station is disconnected when this time elapses in a state where the radio wave reception condition is deteriorated.

An object of the present invention is to provide a mobile communication instantaneous interruption prevention system which can extend the timing of radio wave interruption detection by a user's operation when using a mobile communication system in an area where radio wave conditions are deteriorated. is there.

[0021]

According to the present invention, a mobile communication system including a radio base station having a unique communication channel in a specific service area and a plurality of mobile stations moving in the service area In the said movement
The station receives the handset and the voice input from the handset
And an audio signal section for converting the
Between the base station and the radio waves of the voice and data signals
A first wireless unit for performing transmission and reception according to
Monitor the received electric field of the received radio wave from the radio base station.
Through a first received electric field monitoring unit and the first wireless unit
The data signal exchanged with the radio base station
A first data signal part for encoding / decoding, and an electric field
A first control unit for controlling monitoring / quality monitoring,
Fixed time data and radio interruption judgment frame number data set
The stored first memory unit and the instantaneous interruption prevention signal are
Instantaneous interruption prevention button transmitted to wireless base station and radio interruption judgment time
And a setting button for setting the number of
And an operation unit having an antenna.
Voice and data signals with the mobile station through
A second radio unit for transmitting and receiving radio signals of
The received electric field of the radio wave from the mobile station received by the radio unit of
A second received electric field monitoring unit for monitoring, and the second radio unit
The data signal exchanged with the mobile station through
A second data signal part for encoding / decoding
Sending the voice signal from the second wireless unit to the exchange by wire
Unit and control of detection of instantaneous communication interruption by electric field monitoring / quality monitoring
And a second control unit for performing the instantaneous interruption from the mobile station
Instantaneous interruption prevention on / off information based on signal and radio interruption judgment time
The data and the number of frames for the radio wave interruption judgment are stored.
Is the mobile communication interruption preventing method is obtained, characterized in that it comprises a second memory portion are.

[0022]

[0023]

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

FIG. 1 is a block diagram of a mobile communication system showing an embodiment of a mobile communication instantaneous interruption prevention system according to the present invention.

Referring to FIG. 1, the mobile communication system according to the present embodiment includes a radio base station 2 having a specific communication channel within a specific service area, and a plurality of mobile stations moving within the service area (FIG. 1). In the figure, only one mobile station 1 is shown).

The mobile station 1 transmits and receives a radio signal of a voice signal and a data signal to and from the radio base station 2 via an antenna, a voice signal unit 11 for converting a voice input from the handset 10 into a voice signal, and an antenna. , A reception electric field monitoring unit 13 for monitoring a reception electric field of a radio wave from the radio base station 2 received by the radio unit 12, and a radio unit 1.
2, a data signal unit 14 for encoding and decoding a data signal exchanged with the wireless base station 2 through the control unit 2, a control unit 15 for controlling electric field monitoring / quality monitoring, radio wave interruption determination time data, and the number of radio wave interruption determination frames. An operation unit 18 having a memory unit 16 in which data is set and stored, a display unit 17, and a setting button for setting an instantaneous interruption prevention button and an electric wave interruption judgment time and the number of electric wave interruption judgment frames. .

The radio base station 2 transmits and receives a voice signal and a data signal to and from the mobile station 1 by radio through an antenna, and a reception electric field of the radio wave from the mobile station 1 received by the radio unit 22. Electric field monitoring unit 2 for monitoring
3, a data signal unit 24 that encodes and decodes a data signal exchanged with the mobile station 1 through the wireless unit 22, a wired unit 21 that sends a voice signal from the wireless unit 22 to the exchange 7, an electric field monitoring / quality Control unit 2 that controls monitoring
5 and a memory unit 26 in which the instantaneous interruption prevention on / off information, the radio interruption judgment time data, and the radio interruption judgment frame number data are set and stored.

Next, FIG. 2 is a sequence chart showing a sequence when the instantaneous interruption prevention button of the mobile station communicating with the radio base station in FIG. 1 is turned on / off.

Referring to FIG. 2, when the mobile station 1 presses the instantaneous interruption prevention button on the mobile station 1 while communicating with the radio base station 2 and the radio wave reception situation has deteriorated, the mobile station 1 sends the radio base station 2 Instantaneous interruption prevention ON signal is transmitted. At this time, the mobile station 1 notes that the instantaneous interruption prevention button is on, while the radio base station 2
Then, note the instantaneous interruption prevention ON, the radio wave interruption determination time N seconds, and the number M of radio wave interruption determination frames.

Next, when the radio wave condition during communication becomes very good or when instantaneous interruption prevention is not necessary, when the instantaneous interruption prevention button is released on the mobile station 1, the mobile station 1 switches to the radio base station 2.
Instantaneous interruption prevention off signal is transmitted. At this time, the mobile station 1 notes that the instantaneous interruption prevention button is off, while the wireless base station 2 notes that the instantaneous interruption prevention is off. Then, the communication between the mobile station 1 and the radio base station 2 ends.

Next, the electric field monitoring operation of this embodiment will be described with reference to FIG. FIG. 3 is a flowchart for explaining the electric field monitoring operation of the mobile station and the radio base station in FIG.

The timer (not shown) of the mobile station 1 or the radio base station 2 times out every 0.1 second (step S3).
01) starts this flow.

When the received electric field value is smaller than the threshold value (Y in S302), a radio wave interruption determination counter (not shown)
Is incremented by 1 (S303), and when the received electric field value is equal to or larger than the threshold value (N in S302), the radio wave interruption determination counter is set to 0 (S304).

Here, the control unit 15 or 25 determines whether the instantaneous interruption prevention is ON, and when the instantaneous interruption prevention is ON (S305).
If the radio wave interruption determination counter is equal to or longer than the radio wave interruption determination time (Y in S306), the transmission of the electric wave is stopped (S30).
8).

As a result, the mobile station 1 outputs a busy tone to the handset 10, and the radio base station 2 outputs a mobile end call to the exchange 7 (S309).

The flow in the case of N in S305 is the same as the flow of the conventional example (the flow of S805 to S807 in FIG. 6). That is, when the instantaneous interruption prevention is off, if the radio wave interruption determination counter receives a radio wave within 5 seconds (S
If N) ends at 307 and the radio wave interruption determination counter cannot continuously receive for 5 seconds or more (Y at S307), S3
Proceed to 08.

Next, the reception quality monitoring operation of this embodiment will be described with reference to FIG. FIG. 4 is a flowchart for explaining the reception quality monitoring operation of the mobile station and the radio base station in FIG.

This flow starts every time the mobile station 1 or the radio base station 2 receives one frame (S401).

Then, the number of received frames is incremented by 1 (S40).
2) It is determined whether the frame is normal (S403),
If the frame is normal (Y in S403), the normal counter is incremented by 1 (S404).

Here, the control unit 15 or 25 determines whether the instantaneous interruption prevention is ON (S405). If the instantaneous interruption prevention is ON (Y in S405), the number of received frames is equal to or greater than the number of radio wave interruption determination frames (S406). Y) and the normal counter is 8
In the following (Y in S408), the transmission is stopped (S40
9).

As a result, the mobile station 1 outputs a busy tone to the handset 10, and the wireless base station 2 outputs a mobile end call to the exchange 7 (S410).

When the normal counter exceeds 8 frames ,
When a frame is normally obtained (N in S408), the number of received frames and the normal counter are cleared to 0 (S4).
11) The process ends.

The flow in the case of N in S405 is the same as the flow of the conventional example (the flow of S905 to S907 in FIG. 7). That is, in the 24 frames of the synchronization signal for 8 seconds (Y in S407), the frame normally received is 8 frames.
If it is equal to or less than the frame (Y in S408), the transmission is stopped assuming that the radio wave is interrupted (S409).

If N in S407, that is, if the number of received frames is less than 24 frames , the process ends.

As described above, according to the present embodiment, the determination time of reception radio wave interruption can be lengthened, so that the user can move instantaneously during communication with a mobile phone and enter a radio wave insensitive zone such as a tunnel, for example. By pressing the disconnection prevention button,
Even if a radio interruption occurs within a time set by the user, instantaneous interruption can be prevented.

[0046]

As described above, the present invention relates to a mobile communication system comprising a radio base station having a specific communication channel in a specific service area and a plurality of mobile stations moving in the service area. The radio base station includes a reception electric field monitoring unit that monitors a reception electric field to detect a momentary interruption of communication and a data signal reception unit that receives an instantaneous interruption prevention signal from the mobile station, and the mobile station operates an instantaneous interruption prevention button And a data signal transmitting means for transmitting an instantaneous interruption prevention signal to the radio base station when the mobile station transmits the handset and a voice signal unit for converting a voice input from the handset into a voice signal. And a first radio unit for transmitting and receiving a voice signal and a data signal to and from a radio base station by radio via an antenna, and a radio base station received by the first radio unit from the radio base station. A first received electric field monitoring unit that monitors a received electric field of a wave, a first data signal unit that encodes and decodes a data signal that is exchanged with a wireless base station through a first wireless unit, and an electric field monitoring / quality A first control unit for controlling monitoring; a first memory unit in which radio wave interruption determination time data and radio wave interruption determination frame number data are set and stored; an instantaneous interruption prevention button, a radio wave interruption determination time and a radio wave interruption determination An operation unit having a setting button for setting the number of frames, wherein the radio base station transmits and receives a voice signal and a data signal to and from the mobile station via an antenna by radio waves, and a second radio unit. A second received electric field monitoring unit for monitoring a received electric field of a radio wave from the mobile station received by the second wireless unit, and a data signal exchanged with the mobile station through the second wireless unit for encoding / decoding. A second data signal unit, a wired unit for transmitting a voice signal from the second wireless unit to the exchange, a second control unit for controlling electric field monitoring / quality monitoring, and instantaneous interruption prevention on / off information. And the second memory unit in which the radio wave interruption determination time data and the radio wave interruption determination frame number data are set and stored, so that the reception radio wave interruption determination time can be extended. There is an effect that instantaneous interruption can be prevented even if a radio wave interruption occurs.

[Brief description of the drawings]

FIG. 1 is a block diagram of a mobile communication system showing an embodiment of a mobile communication instantaneous interruption prevention system of the present invention.

FIG. 2 is a sequence chart showing a sequence when an instantaneous interruption prevention button of a mobile station communicating with a radio base station in FIG. 1 is turned on / off.

FIG. 3 is a flowchart illustrating an electric field monitoring operation of a mobile station and a wireless base station in FIG. 1;

FIG. 4 is a flowchart for explaining a reception quality monitoring operation of a mobile station and a radio base station in FIG. 1;

FIG. 5 is a sequence diagram of radio wave disconnection detection in a conventional mobile communication system.

FIG. 6 is a flowchart illustrating an electric field monitoring operation of a mobile station and a radio base station in a conventional mobile communication system.

FIG. 7 is a flowchart illustrating a reception quality monitoring operation of a mobile station and a radio base station in a conventional mobile communication system.

[Explanation of symbols]

 1,5 mobile station 2,6 radio base station 7 exchange 10 handset 11 voice signal unit 12,22 radio unit 13,23 reception electric field monitoring unit 14,24 data signal unit 15,25 control unit 16,26 memory unit 17 display Unit 18 Operation unit 21 Wired unit

Claims (1)

(57) [Claims] 1. A mobile communication system comprising a radio base station having a unique communication channel in a specific service area and a plurality of mobile stations moving in the service area, wherein the mobile station includes a handset, Voice input from this handset
To an audio signal, which converts the
The voice signal and the data signal with the radio base station;
A first wireless unit for transmitting and receiving radio waves,
Received electric field of a radio wave from the radio base station received by the radio unit
A first received electric field monitoring unit for monitoring a signal, and the first wireless unit
The data exchanged with the wireless base station through
Data signal section for encoding and decoding data signals
And a first control unit that controls electric field monitoring / quality monitoring;
Electric wave interruption judgment time data and electric wave interruption judgment frame number data
A first memory unit in which data is set and stored;
Signal to the radio base station
To set the judgment time and the number of radio wave interruption judgment frames
And an operation unit having a setting button, wherein the radio base station communicates with the mobile station through an antenna.
For transmitting and receiving voice and data signals by radio waves
And the mobile station received by the second radio unit.
Receiving electric field monitoring unit for monitoring the electric receiving electric field of radio waves from
And communication with the mobile station through the second radio section.
Encoding and decoding the data signal
2 data signal part and the voice from the second wireless part.
A wired section that sends signals to the exchange and an electric field monitor / quality monitor
A second control unit for controlling detection of instantaneous communication interruption,
ON / OFF based on the instantaneous interruption prevention signal from the mobile station
Information, radio interruption judgment time data and radio interruption judgment frame
And a second memory unit in which the number-of-programs data is set and stored .