JPH09261164A - Waiting method for mobile telephone set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow the mobile telephone set to surely accept an incoming call occurred in an in-zone area afterward even when the telephone set is in out-zone state when hook-off is operated. SOLUTION: During waiting, a system controller 10 always monitors whether or not a control channel is set up, and gives an instruction to a protocol control section 6 to allow a transmission reception section 5 to acquire the control channel when the control channel is not set up. When a handset is hooked off, the control channel is not set up and the telephone set is at the outside of zone, the system controller 10 generates an out-zone call tone, and when the control channel is set up during generation of the out-zone call tone and an incoming call is received, the system controller conducts prescribed call reception processing including the production of the call tone.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a standby method for a mobile telephone, and in particular, a PHS, a mobile telephone, etc. are capable of reliably accepting an incoming call that has been out of service area when an off-hook operation is performed but is subsequently in service area. The present invention relates to a standby method for a mobile phone.

[0002]

2. Description of the Related Art In recent years, a PHS (Personal Handyphone System) that allows a cordless telephone handset to be used outdoors has been put into practical use and is rapidly spreading. FIG. 6 shows an operation during standby in the PHS.
First, the on-hook mode is set, the off-hook display is turned off (step S1), and it is checked whether a control channel for exchanging various control information with the base station is established (step S2). If it is not established, a control channel acquisition operation is performed (step S4). If acquisition is successful, the control channel is established and the area display is turned on (steps S5 and S3). If the current acquisition fails, the control channel is not established and the in-area display is turned off (steps S5 and S6).

Next, it is judged whether or not there is an incoming call (step S
7) If there is an incoming call, the process proceeds to a predetermined incoming call process including generation of a ringing tone (step S8). If so, step S7
If there is no incoming call, it is checked whether the off-hook operation is performed by pressing the off-hook key (step S
9) If not, the process returns to step S2. If the off-hook operation has been performed, the off-hook mode is set and the off-hook display is turned on (step S10), and it is determined whether the control channel is currently in the in-range state or the control channel is out-of-range state (step S11). . Then, in the in-range state, a predetermined calling process including generation of an in-range tone (continuous sound of 400 Hz) is performed, and in cooperation with the base station, connection is made with the partner station dialed by the user (step S12). As a result, it is possible to talk with the desired partner.

On the other hand, if it is determined in step S11 that the control channel is currently out of service, an out-of-service tone (BT sound in which a sound of 400 Hz is repeated twice) is generated (step S13). Then, the user waits for an on-hook operation by pressing the on-hook key (step S
14). When the user hears the out-of-range tone and finds that the user is out of the range where the radio wave from the base station does not reach, the user stops the out-of-range tone (step S15) and returns to step S1 to enter the off-hook mode, and the control channel The capturing operation is performed (steps S2 and S4). When the user enters the area where the radio waves from the base station can reach, the control channel is established, the area display is turned on, and transmission is possible (step S
5, S3).

[0005]

However, in the conventional standby method described above, when the off-hook operation is performed, the control channel is not captured unless the on-hook operation is performed.
If you enter a service area where radio waves from the base station can reach and receive an incoming call, you will be unable to receive the signal. In view of the above-mentioned problems of the prior art, the present invention provides a mobile telephone that is in an out-of-range state at the time of off-hook operation, then enters a range where radio waves from the base station can reach, and can reliably receive an incoming call. Its purpose is to provide a standby method.

[0006]

In the standby method for a mobile telephone according to the present invention, it is constantly monitored whether a control channel is established with the base station, and when the control channel is not established, control is performed. Performs channel acquisition operation and turns on the in-range display or off-range display when the control channel is established, and turns off the in-range display or out-of-range display when the control channel is not established, If the out-of-range control channel is not established at the time of off-hook operation, the out-of-range dial tone is generated and the presence or absence of incoming call is monitored.If the control channel is established during the out-of-range dial tone and there is an incoming call, The present invention is characterized in that a predetermined incoming call processing including a predetermined calling operation is performed.

[0007]

According to the mobile telephone standby method of the present invention, the control channel is constantly monitored whether or not the control channel is established with the base station, and when the control channel is not established, the control channel capturing operation is performed. I do. If the out-of-range control channel is not established during the off-hook operation, the out-of-range tone is generated and the presence or absence of an incoming call is monitored, and while the out-of-range tone is generated, the control channel is established and there is an incoming call. In this case, the process proceeds to a predetermined incoming call process including a predetermined calling operation. This allows the control channel to be captured without any special operation after being off-hook during off-hook operation, so that the control channel can be established promptly when the signal from the base station is reached. It Therefore, within the range where the radio waves from the base station can reach,
And if there is an incoming call, it can be reliably accepted.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a P according to an embodiment of the present invention.
It is a block diagram of HS. Reference numeral 1 is an antenna, 2 is a transmitting microphone, 3 is a receiving speaker, 4 is a ringer that emits a ringing sound when an incoming call is received, under the control of a system controller described later,
Reference numeral 5 denotes a transmission / reception unit for transmitting / receiving various control information and voice signals to / from the base station by the TDMA / TDD system (4 channel multiplex multi-carrier system), and an RF circuit (not shown),
Modulation / demodulation circuit, TDMA / TDD processing circuit, ADPCM
It is composed of a voice encoding / decoding circuit, an A / D circuit, a D / A circuit and the like. The transmitter / receiver 5 receives a voice signal from the transmitter microphone 2 during a call, digitizes and transmits it to the outside, or converts a digital voice signal received from the outside into an analog signal and outputs it to the receiver speaker 3 side. Reference numeral 6 denotes a protocol control unit configured by a microcomputer or the like, which performs predetermined protocol control on the transmission / reception unit 5 according to an instruction from the system controller and switches to a predetermined transmission / reception frequency within the 1.9 GHz band, Control channel that can send / receive data to / from nearby base stations (during standby),
The call channel (during a call) is established, and the transmitter / receiver unit 5
The system controller is notified of various control information received from the base station via the, or the control information transmitted from the system controller is transmitted to the base station via the transmitting / receiving unit 5. During standby, the protocol control unit 6 has a function of determining whether or not a control channel is currently established with the base station according to a request from the system controller and notifying the result.

Reference numeral 7 is a key matrix having off-hook keys, on-hook keys, dial keys, etc., and 8 is L for performing in-range display, off-hook mode display, dial display, etc.
The CD display unit 9 is an adder for outputting various tone signals generated by the system controller to the receiving speaker 3. The tone signal includes an in-range tone (400 Hz continuous tone), an out-of-range tone (BT tone in which 400 Hz tone is repeated twice). Reference numeral 10 is a system controller including a microcomputer, and a ringer 4,
It is connected to the protocol control unit 6, the key matrix 7, the LCD display 8, the adder 9, and the like. The system controller 10 waits for the PHS to make an outgoing connection, an incoming connection,
Performs various overall controls necessary to perform various operations such as ending calls.

FIG. 2 is a flow chart showing a main standby control process performed by the system controller 10, FIG. 3 is a flow chart showing an interrupt process periodically executed by a timer interrupt while the system controller 10 is in standby, and FIG. 4 is an LCD display. Explanatory drawing of the display state of the container 8, FIG.
3 is a waveform diagram showing a tone signal generated by the system controller 10. The standby operation in the above embodiment will be described below with reference to these figures.

The system controller 10 is waiting,
According to the flow of FIG. 3, the protocol controller 6 is periodically inquired to determine whether the control channel is established (step S40). When there is an inquiry, the protocol control unit 6 determines whether or not the control channel is established, and notifies the system controller 10 of the result. If the control channel is established, the system controller 10 displays the LCD
The display control of the display unit 8 is performed to turn on the in-area display to end the interrupt processing (step S41. See FIGS. 4 (1) and 4 (2)). If not established, the protocol control unit 6 is notified of the control channel. Instruct to capture (step S42), LC
The display control of the D display device 8 is performed to turn off the in-area display to end the interrupt processing (step S43, see FIG. 4 (3)).
The protocol control unit 6 instructed to capture the control channel controls the transmission / reception unit 5 to capture the control channel. Since the interrupt processing of FIG. 3 is always repeated at high speed regardless of the off-hook mode or the on-hook mode,
Monitors whether a control channel is established with the base station, and when the control channel is not established, acquires the control channel, and when the control channel is established, turns on the in-range display. , The area display can be turned off when not established.

On the other hand, according to the main flow of FIG. 2, the system controller 10 first sets the on-hook mode and turns off the off-hook display (step S20. FIG. 4).
(See (1)). Next, the reception control information is input from the protocol control circuit 6, and it is checked whether or not there is an incoming call request from the base station (step S21), and if there is an incoming call, a predetermined incoming call process is performed (step S22), and the ringer 4 When the off-hook operation is performed by pressing the off-hook key, the connection control is performed to shift to a predetermined incoming call processing. If there is no incoming call in the judgment of step S21, it is checked whether the off-hook operation is performed by pressing the off-hook key (step S23). If not, the process returns to step S20. If the off-hook operation is performed, the off-hook mode is set and the off-hook display is turned on (step S24; see FIG. 4 (2)). Then, it is checked whether the control channel has been established for the protocol control unit 6 and is in the in-range state (step S25). In the in-area state, a tone signal of 400 Hz continuous tone is generated and output to the adder 9 to generate an in-area dial tone (see FIG. 5).
(Refer to (1)), when the protocol control circuit 6 is instructed to make a call request to the base station side or the dial information corresponding to the operation of the dial key of the user is transmitted, and the other party is notified that the call is answered. The process proceeds to a predetermined calling process such as connection control (step S26).

On the other hand, when the control channel is currently in the out-of-range state where the control channel is currently unestablished because the radio wave does not reach from the base station, the sound of 400 Hz becomes 2
A tone signal of a BT sound that is repeated each time is generated and output to the adder 9 to generate an out-of-range tone (step S2).
7. Refer to FIG. 5 (2)). At this time, step S4 of FIG.
In the process of 3, the in-area display on the LCD display 8 is turned off (see FIG. 4 (3)). After step S27, the system controller 10 checks whether the off-hook operation is performed by pressing the off-hook key, whether there is an incoming call, or whether the on-hook operation is performed by pressing the on-hook key (steps S28 to S30). If both are NO, the system controller 10 continues to generate the out-of-range tone.
When the user, who hears the out-of-range tone and is out of the range where the radio wave from the base station does not reach, operates on-hook,
The system controller 10 determines YES in step S30, stops the out-of-range dial tone (step S32), and returns to step S20 to set the on-hook mode.

However, in the present embodiment, when the out-of-range operation is performed during the previous off-hook operation, the control channel acquisition operation is repeatedly executed by the processing of FIG. 3 even if the on-hook operation is not performed. Then, when the user enters the area where the radio wave from the base station can reach, the control channel is established, the area display is turned on, the call can be transmitted, and the incoming call can be accepted (see FIG. 4 (2)). By turning on the area display,
When the user finds that he / she has entered the range where the radio wave from the base station can reach, and when the user performs the off-hook operation again,
The system controller 10 determines YES in step S28, proceeds to step S25, confirms with the protocol control unit 6 whether a control channel has been established, and if the channel is established and within range, a 400 Hz continuous tone signal is transmitted. It is generated and output to the adder 9 to generate a dial tone, etc., and the process proceeds to a predetermined calling process (step S26).

In this way, when the off-hook operation is performed and the out-of-range condition is reached, the control channel acquisition operation is performed thereafter without any particular operation. Therefore, when the radio wave from the base station reaches, it is promptly reached. The control channel is established,
At the same time, the user is notified that the in-range display is turned on or the out-of-range display is turned off and the user is in the in-range state. Therefore,
By immediately performing the off-hook operation, the user can quickly make a call to the desired party. Further, when the user is out of service during the off-hook operation, only one off-hook operation is required to make a call, and the operation is simple.

On the other hand, if the control channel is established and an incoming call is received while the out-of-range dial tone is being generated because of the out-of-range state at the time of off-hook operation, step S
If YES is determined in 29, the on-hook mode is set, and the LCD
After the display 8 is controlled to turn off the off-hook display (step S31), the process proceeds to step S22, and a predetermined incoming call process including generation of a ringing tone is performed. As a result, if an out-of-range condition is present during off-hook operation, then if there is an incoming call within the range where the radio waves from the base station can reach without any particular operation, it can be reliably accepted.

In the above embodiments, the PHS is described as an example, but the present invention can be applied to a mobile phone as well. In the case of a mobile phone, the in-range display on and the out-of-range display off in PHS may be replaced with the out-of-range display off and the out-of-range display on, respectively. Also, instead of generating a ring tone when an incoming call is made, vibration is generated to notify the incoming call,
You may blink the light. Further, the out-of-range beep sound is a sound in which a sound of 400 Hz is periodically repeated twice, but it may be a sound in which a sound of 400 Hz is periodically emitted once. If the PHS has a shortened registration / confirmation function, a step of checking whether or not these functions are operated is added after NO in step S30 of FIG. 2, and if there is an operation, the shortened registration / confirmation is accepted. After executing the process, the process may return to step S28, or the out-of-range dial tone may be stopped and the process may proceed to step S20. If there is no operation of the shortening registration / confirmation function, the process may directly return to step S28.

[0018]

According to the standby method for a mobile telephone according to the present invention, when an out-of-range state is present during off-hook operation,
After that, since the control channel acquisition operation is performed without any special operation, if you come to the place where the radio wave from the base station can reach,
The control channel is quickly established. Therefore, if there is an incoming call within the range where the radio wave from the base station can reach, it can be reliably received.

[Brief description of drawings]

FIG. 1 is a block diagram of a PHS according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a main standby control process of the system controller.

FIG. 3 is a flowchart showing an interrupt process that is periodically executed by a timer interrupt while the system controller is on standby.

FIG. 4 is an explanatory diagram of a display state of an LCD display device.

FIG. 5 is a waveform diagram showing a tone signal generated by the system controller.

FIG. 6 is a flowchart showing a standby control process in a conventional PHS.

[Explanation of symbols]

1 antenna 2 transmitting microphone 3 receiving speaker 4 ringer 5 transmitting / receiving unit 6 protocol control unit 7 key matrix 8 LCD display 9 adder 10 system controller

Claims (1)

[Claims] 1. When the control channel is always established with the base station, when the control channel is not established, a control channel acquisition operation is performed, and when the control channel is established. If the control channel is in the out-of-range state when the off-hook operation is performed when the off-hook display is turned on or the out-of-range display is turned off, and the off-range display is turned off or the out-of-range display is turned on when not established. , Generate out-of-range dial tone and monitor whether there is an incoming call, and if a control channel is established during the out-of-range dial tone and there is an incoming call, move to a predetermined incoming call process including a predetermined calling operation. The mobile phone standby method characterized by: