JP2006246342A - Mobile phone - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mobile phone that realizes low power consumption by stopping monitoring operation of a received signal of a base station when the mobile phone stays in an out-of-service state.
A GPS antenna 3 receives a GPS signal from a GPS satellite, and a GPS signal receiving unit 4 reproduces GPS information from the GPS signal from the GPS antenna 3 to generate position information of the mobile phone. The out-of-service location information storage unit 5 stores the out-of-service information of the base station from the receiving unit 2 and the current location information of the mobile phone from the GPS signal receiving unit 4 in pairs. The out-of-service state search determination unit 6 searches the position information from the GPS signal receiving unit 4 from the out-of-service position information storage unit 5, and if it matches the stored out-of-service position information, the out-of-service state flag is sent to the power supply control unit 7. introduce. When the out-of-service state flag is transmitted from the out-of-service state determination unit 6, the power control unit 7 stops the power supply of the receiving unit 2 and stops the signal monitoring operation of the base station until the mobile phone returns to the service area.
[Selection] Figure 1

Description

  The present invention relates to a mobile phone provided with a low power consumption mode for reducing power consumption in an out-of-service state where communication with a base station is not possible.

  2. Description of the Related Art Conventionally, mobile phones have always been required to be small and light and have low power consumption due to the convenience of high-definition, and these have become important elements of the basic performance of mobile phones. In order to realize low power consumption, a control method that performs power supply control according to the presence or absence of operation of each circuit of the mobile phone is effective. As a conventional method of reducing power consumption, in an out-of-service state where communication between the mobile phone and the base station is impossible, the ON control for detecting a signal from the base station at a constant cycle and the operation at other times are performed. The power consumption of the cellular phone is reduced by performing the OFF control that is not performed (see, for example, Patent Document 1).

FIG. 3 is a block diagram showing a configuration for realizing low power consumption in a conventional mobile phone. In FIG. 3, an antenna 11 is means for transmitting / receiving a radio signal to / from a base station (not shown), and a receiving unit 12 demodulates and decodes a received signal from the base station received by the antenna 11 to control data and a user. It is a means for reproducing necessary information such as data. The monitor operation activation timer generation unit 13 starts from the out-of-service information indicating that the received signal from the base station (not shown) cannot be normally reproduced from the information generated by the reception unit 12 in the out-of-service state of the mobile phone next time. And a means for generating a timer for counting a period until the base station signal is monitored. Further, the power control unit 14 turns on the power of the receiving unit 12 when the out-of-service operation timer generated by the monitor operation start timer generating unit 13 turns on the monitor operation when the mobile phone is out of service, and a signal from a base station (not shown) Is a means for performing control to enable reception. With the configuration of such means, it is possible to perform battery saving that efficiently reduces the power consumption of the mobile phone when outside the service area.
JP-A-10-013330

  However, in the configuration of the conventional mobile phone including Patent Document 1, power control is performed to supply power only when each circuit of the mobile phone should operate in an out-of-service state, thereby effectively reducing power consumption. However, even when the mobile phone stays in the out-of-service area for a long time, control is performed to periodically detect a signal from the base station. For this reason, while the mobile phone is in the out-of-service area for a long time, the battery is continuously consumed by a periodic signal, so that it is not possible to reduce the power consumption as a result.

  The present invention has been made in view of such a point, and in the case where the mobile phone stays in an out-of-service state, a mobile phone that realizes low power consumption by stopping the monitoring operation of the received signal of the base station. The purpose is to provide.

  In order to solve the above-described conventional problems, the mobile phone of the present invention performs wireless communication with a base station of a mobile phone system, and periodically communicates with the base station when the wireless communication is out of service. A mobile phone that attempts to communicate with each other, and monitors the communication state between the GPS signal receiving means that receives GPS signals transmitted from GPS satellites and generates GPS information indicating the position of the own device, and the base station. The out-of-service location information storage means for storing the location information of the own device in the out-of-service state where wireless communication is impossible, and the location information of the own device obtained from the GPS signal receiving means are stored in the out-of-service location information storage means. An out-of-service state determination unit that determines whether or not the position information of the own device in the out-of-service state matches, and when the out-of-service state determination unit determines that the position information of the own device is in an out-of-service state, Determined out of range again Before moving to the absence, it adopts a configuration including a power supply control means for stopping the power supply of the receiver to not attempt to receive the signal from the base station.

  According to such a configuration, when the mobile phone is in an out-of-service state, the signal monitoring operation from the base station can be stopped, so that low power consumption of the mobile phone can be realized.

  In addition to the configuration of the present invention, the mobile phone of the present invention further includes a boundary that generates boundary position information between the area and the area out of the position information of the own device in the out-of-range state information stored in the out-of-range position information storage unit. A position generation means; and a boundary distance calculation means for calculating a distance from the boundary position outside the service area and the out-of-service area when the position information of the own device is determined to be out of service by the out-of-service condition determination means; And a monitor cycle variable control means for changing a trial cycle of communication with the base station in accordance with a distance from the boundary outside the service area.

  According to such a configuration, the position of the out-of-service state in the mobile phone is accurately calculated, and control is performed to change the monitoring cycle according to the staying position of the mobile phone in the out-of-service area. When the mobile phone stays at the location, the base station signal monitor response time is shortened after the mobile phone returns to the service area, and the power consumption is effectively reduced when the mobile phone is out of the service area. Can be planned.

  According to the present invention, it is possible to reduce power consumed during the monitoring operation by stopping the operation of monitoring the signal from the base station when the mobile phone is in the out-of-service state. Low power consumption can be realized. In addition, it is possible to speed up the monitor response time when the mobile phone enters the service area by changing whether the mobile phone is close to the service area, and to reduce the consumption when it is out of service area. Electricity can be realized.

<< Summary of Invention >>
The mobile phone according to the present invention determines, based on the GPS signal, whether the mobile phone is within a range where radio communication with the base station is possible or is outside a range where radio communication is not possible. When it is determined that the aircraft is out of range, do not attempt to receive (ie, monitor) signals from the base station until the aircraft moves to a position where it is determined to be within range. It is configured to stop the power supply of its own receiver. As a result, when the mobile phone is outside the service area, it is possible to effectively realize low power consumption of the battery.

  Hereinafter, some of the embodiments of the mobile phone according to the present invention will be described in detail with reference to the drawings. In the drawings used in the embodiments, the same components are denoted by the same reference numerals, and redundant description is omitted as much as possible.

Embodiment 1
FIG. 1 is a block diagram showing a configuration for realizing low power consumption in the mobile phone according to Embodiment 1 of the present invention. In FIG. 1, the mobile phone needs an antenna 1 that transmits and receives radio signals to and from a base station (not shown), and a demodulated / decoded signal received from the base station that is received by the antenna 1, and requires control data and user data. A receiver 2 that reproduces various information, a GPS antenna 3 that receives a GPS reception signal from a GPS satellite (not shown), and a position that reproduces GPS information from the GPS reception signal from the GPS antenna 3 and indicates the position of the own device A GPS signal receiving unit 4 for generating information, a communication state with a base station (not shown), an out-of-service location information storage unit 5 for storing location information of the own device in an out-of-service state where wireless communication is impossible, and a GPS Out-of-service state search that searches the position information of the own device obtained from the signal receiving unit 4 from the out-of-service position information data stored in the out-of-service position information storage unit 5 and determines whether or not it exists. When the positioning unit 6 and the out-of-service state search determination unit 6 determine that the position information of the own device is in the out-of-service state, until the mobile device moves to a state where it is not determined to be in the out-of-service state again, The power supply control unit 7 is configured to stop the power supply of the reception unit 2 so as not to try to receive a signal.

  Next, the operation of each component in the mobile phone shown in FIG. 1 will be described. The GPS antenna 3 receives a GPS signal from a GPS satellite (not shown), and the GPS signal receiving unit 4 reproduces GPS information from the GPS signal from the GPS antenna 3 to generate position information of the mobile phone. The out-of-service location information storage unit 5 stores the out-of-service information of the base station from the receiving unit 2 and the current location information of the mobile phone from the GPS signal receiving unit 4 in pairs. Further, the out-of-service state search determination unit 6 searches the out-of-service location information group stored in the out-of-service location information storage unit 5 for the location information from the GPS receiving unit 4, and if it matches, the out-of-service state flag displays the out-of-service state flag. Control to transmit to. When the out-of-service state search determination unit 6 receives the out-of-service state flag, the power control unit 7 turns on the power of the receiving unit 2 until the mobile phone returns to the service area, that is, until the out-of-service state flag is stopped. Control to stop and stop the signal monitoring operation of the base station.

  By such an operation, the power supply control unit 7 can reduce the power consumption during the monitoring operation by stopping the monitoring operation of the base station signal based on the out-of-service state flag from the out-of-service state search determination unit 6. Therefore, it is possible to effectively realize low power consumption when the mobile phone is outside the service area.

<< Embodiment 2 >>
FIG. 2 is a block diagram showing a configuration for realizing low power consumption in the mobile phone according to Embodiment 2 of the present invention. The configuration of the mobile phone according to the second embodiment shown in FIG. 2 differs from the configuration of the mobile phone according to the first embodiment shown in FIG. The out-of-service state search determination unit 6 to be output is deleted, the boundary position generation unit 8 that generates position information of the boundary between the mobile phone and the outside of the mobile phone from the out-of-service information and the position information from the out-of-service position information storage unit 5, and GPS signal reception A boundary distance calculating unit 9 for calculating a distance from the in-range and out-of-range boundary at the position of the mobile phone generated by the unit 4, and a monitor for generating a control signal for the monitoring period of the base station signal according to the distance from the boundary This is the point that the cycle variable control unit 10 is added. The power supply control unit 7 turns on the power supply of the reception unit 2 when the monitor cycle control signal indicates the ON state of the monitoring operation.

  In other words, in the mobile phone shown in FIG. 2, the boundary position generation unit 8 generates position information of the boundary between the mobile phone area and the out-of-service area from the out-of-range information and the position information from the out-of-service position information storage unit 5, and the boundary distance calculation unit 9 calculates the distance from the in-range and out-of-range boundary at the position of the mobile phone generated by the GPS signal receiving unit 4. Then, the monitor cycle variable control unit 10 generates a monitor cycle control signal for the signal of the base station according to the distance from the boundary.

  Thereby, the power supply control unit 7 turns on the power supply of the reception unit 2 when the monitor cycle control signal indicates the ON state of the monitoring operation. Here, the monitor cycle variable control unit 10 increases the frequency of the base station signal monitoring operation when the mobile phone stays at a position close to the boundary between the outside and the outside of the area. That is, when the mobile phone is located near the boundary between the inside and outside of the area, the monitoring cycle is shortened. Further, when the mobile phone is at a position where the distance from the boundary is long, the frequency of the base station signal monitoring operation is reduced. That is, when the mobile phone is at a position where the distance from the boundary is long, the monitor cycle control signal is generated so as to lengthen the monitor cycle.

  By such an operation, when the mobile phone stays at a position in the out-of-service area closer to the service area by calculating the position of the out-of-service state in the mobile phone and performing control to change the monitor cycle according to the stay position in the out-of-service area Can reduce power consumption when out of service area while increasing the monitor response time of the base station signal after returning to the service area.

  Since the mobile phone according to the present invention can reduce power consumption in an out-of-service state, it can be effectively used as a versatile mobile phone with low power consumption and ease of use.

1 is a block diagram showing a configuration for realizing low power consumption in a mobile phone according to Embodiment 1 of the present invention. The block diagram which shows the structure which implement | achieves low power consumption in the mobile telephone which concerns on Embodiment 2 of this invention. A block diagram showing a configuration for realizing low power consumption in a conventional mobile phone

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Antenna 2 Receiving part 3 GPS antenna 4 GPS signal receiving part 5 Out-of-service location information storage part 6 Out-of-service state search determination part 7 Power supply control part 8 Boundary position generation part 9 Boundary distance calculation part 10 Monitor cycle variable control part

Claims (2)

A mobile phone that performs wireless communication with a base station of a mobile phone system, and periodically tries communication with the base station when the wireless communication is not possible,
GPS signal receiving means for receiving GPS signals transmitted from GPS satellites and generating GPS information indicating the position of the own device;
Out-of-service location information storage means for monitoring the communication status with the base station and storing location information of its own device in an out-of-service state where wireless communication is not possible;
Out-of-service state determining means for determining whether or not the position information of the own device obtained from the GPS signal receiving means matches the position information of the own device in the out-of-service state stored in the out-of-service position information storage means; ,
When the position information of the own device is determined to be in the out-of-range state by the out-of-service state determining unit, the reception of the signal from the base station is attempted until the device moves to a state where it is not determined to be in the out-of-range state again. Power control means for stopping the power supply of the receiver so as not to
A mobile phone comprising: Further, boundary position generation means for generating boundary position information between the area and the outside of the area from the position information of the own device in the out-of-range state stored in the out-of-area position information storage means,
When it is determined by the out-of-service state determining means that the position information of the own device is in an out-of-service state, a boundary distance calculating unit that calculates a distance from the in-service area and the out-of-service boundary position;
Monitor cycle variable control means for changing a trial cycle of communication with the base station according to a distance from the boundary between the area and the outside of the area;
The mobile phone according to claim 1, further comprising:

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