JP2003158769A - Mobile communication system and mobile communication device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable smooth re-connection by cooperation between a transmitter side and a receiver side even if a communication fails due to the deterioration in communication quality when calling (communicating) with a mobile communication devices. SOLUTION: In a mobile communication device, a call or communication is performed to another mobile communication device, another mobile terminal device, or another fixed telephone set after connection to a base station by wireless. When disconnection occurs due to an abnormal line state to which the user of the mobile communication device is not related (S101), call end processing is performed (S102). In this case, if its own device is a receiver side ('Yes' in S103), the transmission is inhibited during a time preset by a timer (S104). When normal standby is recognized after time up (S106), if its own device is the receiver side ('No' in S103), the transmission is inhibited and if its own device is a transmitter side, re-transmission processing is performed (S111). Since the receiver side is in a transmission inhibition state i.e., a reception able state, this re-transmission is surely performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication system and a mobile communication device, and more particularly, when a call (communication) becomes impossible due to deterioration of the quality of the line condition, etc. The present invention relates to a mobile communication system and a mobile communication device that enable smooth reconnection.

[0002]

2. Description of the Related Art Mobile phones and PHS (Personal Handypho
In a mobile communication device such as a (ne System) machine, the call state is canceled due to deterioration of communication quality regardless of the intention of the user in the call state (hereinafter, release).
There is something that is said. In such a case, it is impossible for both users who have been talking to make a call, and it is not possible to receive a call from each other, and it is difficult to reconnect.

Various measures and solutions to such problems have been proposed, for example, Japanese Patent Laid-Open No. 2000-3254.
When the mobile terminal receives the notification information indicating the abnormal condition sent from the base station, the notification information is analyzed, and a message indicating the abnormal condition is displayed on the display unit according to the analysis result. It is displayed so that the detailed cause of the trouble that has occurred in the mobile communication system can be known. Further, in Japanese Patent Laid-Open No. 2000-125357, when a line connection with a base station is disconnected during communication between mobile terminals, a message prompting a call to a preset re-connection destination telephone number is sent to the partner terminal. Then, by calling the reconnection destination telephone number from the other party, the line is connected between the terminal of the reconnection destination telephone number and the partner terminal.

Further, in Japanese Laid-Open Patent Publication No. 11-239385, when the telephone call ends abnormally, the electric field level is detected, and if the electric field level is a level at which the telephone call is possible, the outgoing call history or incoming call history stored in the memory is detected. The latest dial data is read from and the call is automatically sent to the other party who was disconnected. Furthermore, a message indicating that it is out of the service area is output by voice. As a result, even if the received electric field strength is deteriorated and the call is disconnected, it is possible to automatically perform the redialing or notify the user that the communication area is out of the range.

[0005]

However, according to the conventional mobile communication system and mobile communication device, Japanese Patent Laid-Open No. 2000-2000 is disclosed.
In Japanese Patent Laid-Open No. 32548/2000 and Japanese Patent Laid-Open No. 2000-125357, when the communication is disabled in a state in which the user is not involved, the cause of the malfunction is notified by a message, or a message prompting a call by the reconnection destination telephone number is notified. However, the rest of the procedure is left to the user. In addition, as in Japanese Patent Laid-Open No. 11-239385, transmission /
In the method of automatically connecting based on the incoming call history, there is no linkage between the calling side and the called side, and there is a case where reconnection cannot be performed because it is a re-call due to unilateral judgment of the calling side or the called side. That is, since the conventional mobile communication device does not have a function of supporting smooth re-communication, it is an urgent requirement after being released due to quality deterioration, etc. Make a call at the same time, which makes it difficult to reconnect.

Therefore, an object of the present invention is to provide a mobile communication system and a mobile communication device which, when a call becomes impossible due to deterioration of quality or the like, enable smooth reconnection while maintaining coordination between the calling side and the called side. To provide.

[0007]

In order to achieve the above object, the present invention has, as a first feature, a communication network, a mobile communication device on the originating side wirelessly connected to the communication network, and the communication. In a mobile communication system including a mobile communication device on the receiving side connected to the mobile communication device on the transmitting side via a network, the mobile communication device on the transmitting side is caused by a cause such as an abnormality in a line state not involved by a user. When recognizing that the line is disconnected, the mobile communication device on the called side is provided with the first control means for sending the information on the line disconnection to the communication network and starting the process of redialing. When the information sent from the communication device is received, a second control means is provided for setting a call prohibition state for a time corresponding to a time required for receiving a redial call from the mobile communication device on the calling side. To provide a mobile communication system to be.

According to this system, during a call (communication),
When the originating mobile communication device recognizes that the line has been disconnected due to a cause such as quality deterioration, not due to the user's intention to disconnect the line, the information related to the line disconnection is sent to the communication network. Is sent from the communication network to the mobile communication device on the called side. When the mobile communication device on the receiving side receives the information from the mobile communication device on the calling side, the mobile communication device on the receiving side sets itself to the outgoing call prohibition state and enables the incoming call for the redialing from the mobile communication device on the calling side. This enables smooth reconnection.

Further, in order to achieve the above object, the present invention has, as a second feature, a call or communication with another mobile communication device or a mobile terminal device through a connection with a base station by radio. When the mobile communication device recognizes that the line is disconnected due to an abnormality in the line status that does not involve the user, if the mobile device itself is on the called side, the outgoing call is prohibited and the local device In the case of the above, there is provided a mobile communication device including a control unit that executes a redialing process.

During a call (communication), when the control unit recognizes that the line has been disconnected due to a cause such as quality deterioration, not based on the user's intention to disconnect the line, the mobile communication device used is Appropriate control is executed by the control unit depending on whether the user is on the called side or the calling side. When it is determined that the called party is on the called side, the control unit sets the outgoing call stop in preparation for an incoming call for redialing from the calling party. When it is judged that the called party is on the called side, the called party is in the standby state. Promptly execute the redial process. This allows
Smooth reconnection is possible.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a mobile communication device according to the present invention. Here, it is assumed that the mobile communication device is a mobile phone. The mobile phone 1 includes a control unit 10, a ROM (read only memory) 11, a RAM (random access memory) 12, a baseband unit 13,
Radio unit 14, antenna 15, microphone (speaker)
16, a receiver (receiver) 17, an LCD (liquid crystal display) device 18, a key 19, an LED (light emitting diode) 20, a vibrator 21, and a timer 22.

The control unit 10 is composed of a CPU (central processing unit) and controls the entire mobile phone 1 and the timer 22. The control unit 10 controls each unit in accordance with a control program stored in the ROM 11, and specifically executes the process shown in FIG. ROM11
Stores various fixed data used in the control unit 10 in addition to the control program. The RAM 12 is used for a work area when the control unit 10 performs processing and for temporarily storing data.

The baseband unit 13 is, for example, an A / D conversion circuit or a codec (CODE) for compressing / expanding data.
C) Including circuit, compression / decompression of voice signal for wireless transmission, modulation / demodulation of connection sequence control signal with base station,
Processing such as synthesis and separation of voice signals and control signals is executed.
The base band unit 13 is, for example, a DSP (DigitalS
The signal from the control unit 10 is processed and supplied to the wireless unit 14 as a baseband signal, and the signal from the wireless unit 14 is processed and supplied to the control unit 10. The baseband unit 13 is connected to a microphone 16 that converts an input voice into an electric signal and a receiver 17 that is a speaker. The audio signal from the microphone 16 is supplied to the wireless unit 14 after being subjected to a predetermined process in the baseband unit 13. The signal from the radio unit 14 is applied to the receiver 17 after being subjected to the above-described processing in the baseband unit 13, and the receiver 17 performs sound-electric conversion to reproduce sound.

The radio section 14 amplifies the radio frequency signal from the antenna 15 and demodulates it into a baseband signal (not shown), and modulates a high frequency signal with the baseband signal, and the modulated signal is radiowaved. Converted to a frequency signal, and
A transmitter (not shown) that amplifies and supplies to the antenna 15 is provided. As a result, the wireless unit 14
Then, the voice and other signals transmitted as radio waves are received via the antenna 15, and the voice and other signals generated in the mobile phone 1 are transmitted as radio waves to the base station via the antenna 15.

The LCD device 18 includes input information, incoming call information,
It is used to display various other messages. This message includes various states related to the mobile communication system, for example, the state of the base station, the operating state of the mobile phone 1 itself, a call origination message, a release message, and the like. The key 19 operated by the user includes a ten key, a start key, an end key, a function key, and the like, and uses various functions of the mobile phone 1 or inputs a telephone number. Used for stuff etc. The information input from the key 19 is applied to the control unit 10. LED 20 is key 19 and LCD
The control unit 10 includes an LED functioning as a backlight of the device 18 and an LED for displaying an incoming call, and the control unit 10 controls the lighting and extinguishing of these. The vibrator 21 informs the user of an incoming call by making the user experience the vibration generated when the small motor is rotated. The control of the vibrator 21 is performed by the control unit 10.

FIG. 2 shows the operation of the mobile communication device according to the present invention, that is, the processing of the control unit 10. In the figure, "S" represents a step. Here, FIG. 2 shows the control contents in the mobile communication device 1A (1B) in the embodiment of the present invention.

There are two release messages described below: a normal release message issued when the "end call key" is pressed, and a release message issued when quality is deteriorated. To do. Also, in the following, when two mobile phones (calling side is called mobile phone 1A and called side is called mobile phone 1B) are talking, the calling side mobile phone 1A A case where a release message is issued to the base station will be described. In this case, the mobile phone 1A that has transmitted the release message to the base station starts redialing (= recalling) to the mobile phone 1B on the receiving side when the call termination sequence ends. On the other hand, the mobile phone 1B on the receiving side is restricted from making outgoing calls for a certain period of time.

As shown in FIG. 2, when the mobile phone 1A in the call state receives a release message due to quality deterioration from the base station (S101), the call termination sequence is executed (S102). Upon receiving the release message, the mobile phone determines whether it corresponds to the calling side or the receiving side (S103). When the mobile phone is on the receiving side, the control unit 10 of the mobile phone 1B sets the "call prohibit flag" in the mobile phone 1B to "ON" to set the call prohibit state (S104) and simultaneously sets the timer 22. It is activated (S105). When the timer 22 times out (S106), the "call prohibition flag" is set to "OFF", and the call is permitted (S).
107), and enters a normal standby state (S108).

Next, a case will be described in which the mobile phone is the calling side in the determination of S103. In this mobile phone 1A, the count value of the counter (provided as software in the program stored in the ROM 11) for counting the number of redials is incremented (S
109). It is determined whether or not the count value is less than or equal to a preset maximum value (S110), and when the counter value is equal to the maximum value, the normal standby state is set (S10).
8). If the count value is less than or equal to the maximum count value,
The mobile communication device 1A on the calling side refers to the memory of the calling history and the like, and automatically executes redialing (S111), and determines whether or not the reconnection is completed (S112). In addition, S112
When the reconnection cannot be confirmed in step S109, the process is returned to step S109, and the subsequent processes are repeatedly executed. When it is determined that the reconnection is completed (S112), the call state (S113)
Move to. In addition, this outgoing call restriction function is applied to mobile phone 1A.
(1B) is provided, and it is possible for the user of the mobile phone 1A to select valid / invalid.

FIG. 3 shows a mobile communication system of the present invention,
FIG. 4 shows a sequence of the mobile communication system of FIG. As shown in FIG. 3, the mobile communication system 30 includes a network (mobile communication network) 31, base stations 32 connected to the network 31,
33, and mobile phones 1A and 1B as mobile communication devices
It is configured with. The configurations of the mobile phones 1A and 1B are as shown in FIG. Here, the mobile phone 1
It is assumed that A is on the calling side and mobile phone 1B is on the receiving side. The base stations 32 and 33 wirelessly communicate with the mobile phones (1A and 1B) within their own area, and execute processing for connection. Although not shown in the drawing, a control station or the like is actually interposed between the base stations 32 and 33 and the network 31.

The operation of the mobile communication system 30 of the present invention will be described with reference to FIGS. 3 and 4. When the calling side mobile phone 1A and the receiving side mobile phone 1B are in a call state (S201), a release message is transmitted from the calling side mobile phone 1A to the network due to the quality deterioration in the downlink direction of this mobile communication system (S202). Is sent to the user (S203).
The network side, which has received the release message from the mobile phone 1A side, transmits the release message to the mobile phone 1B on the receiving side (S204). Further, the mobile phone 1A on the calling side that has sent the release message then starts the redialing process (S207), and then sends the outgoing message to the network side (S207). The network side having received the outgoing call message sends the outgoing call message from the outgoing side mobile phone 1A to the incoming side mobile phone 1B (S208). At the receiving side mobile phone 1B, if the time set by the timer is exceeded at the time of receiving the outgoing message, the connection is made possible, a line connection is formed between the mobile phones 1A and 1B, and a call (or data communication) is made. Etc.) (S20
9).

As described above, according to the embodiment of the present invention, when a call (communication) is released due to quality deterioration or the like, it is impossible to make a call to the receiving side mobile communication device for a certain period of time. On the other hand, before the mobile communication device on the calling side is automatically released, a process for redialing to the other party (calling side) with which the call (communication) is made is activated. As a result, the call from the calling side to the called side is surely made, and the connection after the release is made surely and quickly.

In the above embodiment, the mobile communication device is a mobile phone, a PHS machine, a car phone, or a mobile mobile terminal device having a wireless communication function (for example,
PDA (Personal Digital Assistant machine) can be targeted. Although the timer 22 is provided in the control unit 10, the timer 22 may be provided independently and externally connected to the control unit 10. Similarly, although the counter is made of software, it may be made of hardware.

Further, in FIG. 2, after the outgoing call prohibition flag is set in S104, the timer is started in S105. However, the processing in S105 and S106 is replaced with the step "Is the outgoing message received?" That Ye
The flow may be such that S107 is executed when s is determined. In this way, even if the arrival of the outgoing message is delayed, the mobile communication device on the receiving side can reliably respond. However, with this configuration, the mobile communication device on the receiving side will not be able to make a call forever if no call message is sent, so it is possible to cancel the call prohibition by operating a specific key. It is desirable to display a guide message on the display as to whether or not the key can be released.

[0025]

As is apparent from the above, according to the mobile communication system of the present invention, when it is recognized that the line is disconnected due to an abnormality in the line state not involving the user, the mobile communication on the originating side is performed. In the device, the information regarding the line disconnection is sent to the communication network, and the process of redialing is started,
Also, when the mobile communication device on the receiving side receives the information regarding the line disconnection from the mobile communication device on the outgoing side, the outgoing call prohibits the time corresponding to the time required to receive a redial call from the mobile communication device on the outgoing side. Since the mobile communication device on the calling side is in a state where the mobile communication device on the called side cannot make a call when the mobile communication device on the calling side redials, it is possible to receive an incoming call for the redial call from the mobile communication device on the calling side. As a result, smooth reconnection is possible.

Further, according to the mobile communication device of the present invention, when recognizing that the line is disconnected due to an abnormality in the line state not involving the user, the outgoing call is prohibited when the own device is on the called side. However, when the device is on the originating side, the mobile communication device on the receiving side at the time of release is in a standby state in preparation for the outgoing call from the originating side, because the control section for executing the redialing process is provided. If there is a call from the mobile communication device on the calling side, the incoming call can be immediately received, so that smooth reconnection is possible.

[Brief description of drawings]

FIG. 1 is a block diagram showing a mobile communication device according to the present invention.

FIG. 2 is a flowchart showing a process of the mobile communication device of the present invention.

FIG. 3 is a block diagram showing a mobile communication system of the present invention.

FIG. 4 is a time chart showing a communication sequence between the mobile communication device of the present invention and a network.

[Explanation of symbols]

1, 1A, 1B mobile phones 10 Control unit 11 ROM (Read Only Memory) 12 RAM (random access memory) 13 Baseband 14 radio section 18 LCD device 22 timer 30 mobile communication systems 31, network (mobile communication network) 32,33 base stations

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 5K027 AA11 BB05 CC08 EE04 GG08                       HH11                 5K036 AA07 BB01 DD03 HH01 LL01                 5K067 AA21 BB04 DD11 DD41 DD51                       EE02 EE10 EE16 FF02 GG01                       GG11 GG22 HH11 HH22

Claims (4)

[Claims] 1. A communication network, a calling-side mobile communication device wirelessly connected to the communication network, and a receiving-side mobile communication device connected to the calling-side mobile communication device via the communication network. In a mobile communication system including, when the mobile communication device on the originating side recognizes that the line is disconnected due to a cause such as an abnormality in a line state that does not involve the user, the mobile communication device sends the information regarding the line disconnection to the communication network and re-transmits The mobile communication device on the called side receives the information sent from the mobile communication device on the calling side, and the mobile communication device on the calling side receives the information from the mobile communication device on the calling side. A mobile communication system comprising: second control means for setting a call prohibition state for a time corresponding to a time required for receiving a redial call. 2. In a mobile communication device that makes a call or communicates with another mobile communication device or a mobile terminal device via a wireless connection with a base station, a cause such as an abnormality in a line state not involved by a user When it is recognized that the line has been disconnected by the terminal, it is equipped with a control unit that prohibits calling if the terminal is on the called side and executes redialing processing if the terminal is on the calling side. Mobile communication device. 3. The mobile communication device according to claim 2, wherein the control unit, when judging the called party, restricts outgoing calls and sets a normal standby state after a preset time has elapsed. . 4. The control unit, when judging the originating side, executes automatic redial within the set number of redials until reconnection is completed if the number of redials is less than or equal to the set number of redials. 3. The mobile communication device according to claim 2, wherein a line connection state is set if the set number of redials is exceeded.