JPH08181649A - Mobile communication equipment - Google Patents

Abstract

PURPOSE: To attain speech with excellent speech quality by displaying a position offering excellent speech quality while relating position information at a moving destination and an electric field strength of a radio wave to allow a talking party to move while observing the display. CONSTITUTION: A mobile telephone set receives a radio wave including control and base station ID sent from a base station and a base station recognition circuit 6 stores a speech object base station ID. A CIR information storage circuit section 4b stores a CIR value detected by a CIR information detection circuit section 4a. Then a CIR arithmetic section 4e generates a cross reference table between the position information and the CIR detected by a position information detection circuit 4c based on time, forms four division areas of north-east to south west and north west to south east around a current position of the telephone set visually and compares a mean CIR in the division areas and sets ranking in the larger order. The ranking is displayed on a display section 5 in terms of the length of the arrow so that the viewer discriminates in which direction an excellent radio wave condition is obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication device for performing radio communication with a base station arranged in each zone constituting a wide service area.

[0002]

2. Description of the Related Art Recently, mobile phones such as automobile mobile phones have rapidly spread. In this mobile phone system, a base station is arranged in each of a plurality of zones in a service area, and when making a call, a call can be made between mobile phones via those base stations. . Such a mobile telephone system includes a personal digital cellular (hereinafter referred to as PDC) system in which a base station is arranged in a range of about 1.5 km, and a personal handy phone in which a base station is arranged in a range of about 100 m. It can be roughly divided into two types of system (hereinafter referred to as PHS) methods.

Then, these PDC systems, or P
In the communication in the HS system, the base stations are connected by a wired public line, for example, an ISDN line, and between the base station and the mobile telephone, a fixed frequency pre-assigned for each base station (in some cases, mobile In some cases, the allocation of frequencies that can be used by the base station may be dynamically changed depending on the call status between body telephones, etc.).

[0004]

As described above, regardless of the PDC method or the PHS method, it is possible to carry a mobile telephone and have a call outside at a desired place with a base station. However, a mobile phone often moves to a building such as a building, or to a radio dead zone such as an underground mall. In such a case, the radio wave condition deteriorates and the call quality deteriorates. was there.

To solve this problem, first, a place where the radio wave condition is good may be selected to make a call, but it is not known which place has the optimum radio wave condition unless the mobile station is properly moved. There was a point.

Therefore, the present invention has been made in view of the above problems, and a first object thereof is to notify the user of the mobile communication device of the electric power state of the radio wave transmitted from the base station.

Further, the second purpose is to notify the user of the mobile phone of the place where the radio wave condition is optimum even if the call quality is deteriorated in the radio dead zone, so that the user can find the place related to the better radio wave condition. An object is to provide a mobile communication device that can be easily found and used for a call.

[0008]

SUMMARY OF THE INVENTION According to the present invention, in a mobile communication device that wirelessly communicates with a base station, the power state of radio waves transmitted from the base station is notified to the user of the mobile communication device. Characterize.

Further, according to the present invention, in a mobile communication device for performing radio communication with a base station, a position information detection circuit section for detecting position information at a position to which the mobile communication device has moved, and at the above position, It is characterized by comprising a power detection circuit section for detecting a power state of a radio wave transmitted from the base station, and a display section for displaying the power state in correspondence with the position information.

The display unit of the present invention is characterized by visually displaying the current power state of the peripheral portion of the mobile communication device.

Further, the mobile communication device of the present invention comprises a base station recognition circuit section for receiving a radio wave transmitted from the base station, on which a base station identification code for identifying a base station corresponding to each zone is superimposed. The base station recognition circuit unit displays the power state on the display unit according to the received position information and power state related to the same base station identification code.

[0012]

The present invention is provided with the above means,
It is possible to notify the user of the mobile communication device of the power state of the radio wave transmitted from the base station.

As the mobile communication device moves, the position information detecting circuit section detects the position information at each moving destination, and the power detecting circuit section also detects the power state corresponding to each moving destination. The current power status around the mobile communication device can be displayed on the display unit by associating the power status of the radio wave with the position information.

The present invention can visually display the current power state of the peripheral portion of the mobile communication device.

Further, the present invention comprises a base station recognition circuit section for receiving a radio wave transmitted from the base station, on which a base station specifying code for specifying the base station corresponding to each zone is superimposed. The base station recognition circuit unit can display the power status on the display unit according to the received position information and power status related to the same base station identification code.

[0016]

Embodiments of the present invention will be described with reference to FIGS.

FIG. 1 is a schematic configuration diagram of a mobile telephone according to the present invention.

In FIG. 1, reference numeral 1 is a transmission circuit section for extracting a voice signal of a speaker (user) from a microphone 1a, 2
Transmits the voice signal of the other party's speaker transmitted from the speaker 2a.
To the CIR in the zone to which the mobile phone belongs.
(Carrier to Interference power Ratio), that is, a detection circuit unit that detects the power ratio of a carrier wave to an interference wave.

The power ratio of the carrier wave to the interference wave will be described. Generally, in mobile phones, especially in PHS services, it is possible to increase frequency efficiency by dividing a wide service area into a plurality of small zones and reusing radio channels of the same frequency in distant zones. Is common. Therefore, a carrier wave having the same frequency and an interference wave not involved in wireless communication exist around the wireless zone, and the antenna of the mobile phone can receive both the carrier wave and the interference wave.

Reference numeral 4a denotes a CIR information detection circuit section for detecting CIR information, 4b denotes a CIR information storage circuit section for storing and storing the CIR information detected by the CIR information detection circuit section 4a, and 4c is moved by a GPS (Global positioning system). A position information detection circuit unit for detecting the position information of the body telephone, 4d is a position information storage circuit unit for storing and storing the position information detected by the position information detection circuit unit 4c, and 4e is stored for storage in the CIR information storage circuit unit 4b. CIR information in the vicinity of the mobile telephone, that is, C, according to the CIR information and the position information stored and stored in the position information storage circuit unit 4d.
It is a CIR calculator that calculates an IR value.

Reference numeral 5 denotes a display unit such as a liquid crystal display, which is based on the CIR value in the zone to which the mobile phone belongs and the position information of the mobile phone that has moved in the past, and which is used for the current mobile phone. It has a function of displaying whether or not the CIR value in the direction is high. Generally, the high CIR value indicates that the communication quality is good.

Reference numeral 6 denotes a base station I when the mobile phone receives a control radio wave including a base station ID transmitted from the base station.
This is a base station recognition circuit unit for specifying a communication base station according to D, and this base station recognition circuit unit 6 stores the received base station ID. If the base station ID is different, the mobile phone is different. It indicates that you have moved to the zone.

Reference numeral 7 is a direction detecting circuit section for detecting in which direction (direction) the mobile telephone is facing.

Reference numeral 8 is a control circuit unit for controlling the transmission circuit unit 1, the reception circuit unit 2, the detection circuit unit 4, and the display unit 5.

In the above-described structure, according to the present invention, the CIR information detection circuit unit 4 detects the position information of the mobile telephone that has moved in the past and the CIR value, and thereby the operation until the optimum radio wave state position is displayed. Will be described with reference to the flowchart of FIG.

In step S1, the mobile telephone receives the control radio wave including the base station ID transmitted from the base station, and the base station ID of the mobile telephone to which the mobile telephone is talking is identified by the base station recognition circuit section. 6 remembers.

In step S2, the position information detecting circuit 4c detects the position information when the mobile phone has moved in the zone to which the mobile phone belongs in the past, for example, every 10 seconds, and the position information is detected. The information storage circuit unit 4d stores the information. When storing the position information in the position information storage circuit unit 4d, a format including the position information and the time is formed as shown in FIG.

In step S3, the CIR information detection circuit section 4a detects the CIR value when the mobile phone has moved in the past in the zone to which the mobile phone belongs, for example, every 10 seconds, and the CIR value is detected. CIR information storage circuit unit 4
b remembers. When storing the CIR value in the CIR information storage circuit section 4b, a format including the CIR value and the time is formed as shown in FIG. At this time, the detection of the position information of the mobile telephone in step S2 and the detection of the CIR value in step S3 are synchronized by a clock (not shown).

In step S4, the CIR calculator 4
e is based on the information of FIGS. 3 and 4 and is based on the time of FIG.
A correspondence table between position information and CIR values as shown in is created.

In step S5, a distribution map of CIR values is created in accordance with the table created in step S4, and dividing lines are drawn in the directions of northeast-southwest and northwest-southeast with the current position coordinates of the mobile phone as the center. By virtually setting, it is divided into four sections and the average value of the CIR values belonging to each section is calculated. Then, the average CIR values for each of the four sections are compared, and ranking is performed from the larger value.

In step S6, four types of arrows having different sizes are averaged according to the rank assigned in step S5.
The R values are displayed in descending order.

In step S7, it is determined whether or not the mobile phone has moved between zones, that is, whether or not the base station IDs are different. If the base station IDs are different, step S8 is performed.
If not different (matching), the process returns to step S1. This is because, in general, when moving between zones, the CIR value and position information detected in the immediately preceding zone do not help grasp the optimum radio wave condition in the zone after movement.

In step S8, since the zones are different, the contents of the CIR information in the CIR information storage circuit unit 4b and the position information in the position information storage circuit unit 4d are erased.

According to the flow chart of FIG. 2 described above, arrows of different sizes are displayed on the display unit 5 of the mobile phone as shown in FIG. 6 centering on the current position of the mobile phone. It can be seen that the radio wave condition improves. When the caller sees the arrow displayed on the display unit 5, the mobile phone is generally horizontal. Therefore, the arrow displayed on the display unit 5 of the mobile phone is displayed in consideration of the case where the mobile phone is in the horizontal state.

Further, depending on the caller, the mobile telephone may be placed in a horizontal state and rotated, so that the direction detection circuit unit 7 detects the absolute direction and appropriately corrects and changes the arrow display.

In the above embodiment, the CIR information storage circuit section 4b detects the CIR information. However, the present invention is not limited to this, and instead of the CIR information, the output value of the radio wave transmitted from the base station. It is also conceivable that the mobile phone receives. Therefore, in this case, the CIR information detection circuit unit 4 of FIG.
It is also possible to replace a with the radio wave information detection circuit unit, replace the CIR information storage circuit unit 4b with the radio wave information storage circuit unit, and replace the CIR calculation unit 4e with the radio wave information calculation unit.

[0037]

As is apparent from the above description, according to the present invention, the mobile telephone moves, the position information at the destination and the power state are associated with each other, and the display section has good call quality. Since the position can be displayed, the caller can move while looking at the display, and can always make a call with good call quality.

Further, since the power status can be visually displayed on the display section, the power status can be grasped at a glance by looking at the display section.

Further, since the mobile communication device includes the base station recognition circuit section, even when the mobile phone moves to a different zone, the base station recognition circuit section identifies the base station transmitted by the base station. It is possible to receive the code,
Since the power status is displayed on the display unit according to the position information and the power status detected in the same zone, the accurate power status can be grasped.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a mobile phone of the present invention.

FIG. 2 is a flowchart according to the present invention.

FIG. 3 is a format of position information and time stored in a position information storage circuit unit 4d of the present invention.

FIG. 4 is a format of CIR information and time stored in a CIR information storage circuit section 4b of the present invention.

FIG. 5 is a format of position information and CIR value of the present invention.

FIG. 6 is an external configuration diagram of a mobile phone according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Transmission circuit unit 2 ... Reception circuit unit 4a ... CIR information detection circuit unit 4b ... CIR information storage circuit unit 4c ... Position information detection circuit unit 4d ... Position information storage circuit unit 4e ... CIR calculation unit 5 ... Display unit 6 ... Base station recognition circuit unit 7 ... Direction detection circuit unit

Claims (4)

[Claims] 1. A mobile communication device for performing wireless communication with a base station, characterized in that the power state of a radio wave transmitted from the base station is notified to a user of the mobile communication device. . 2. A mobile communication device that wirelessly communicates with a base station, and a position information detection circuit unit that detects position information at a position to which the mobile communication device has moved, and a call from the base station at the position. A mobile communication device, comprising: a power detection circuit unit that detects a power state of a radio wave to be generated; and a display unit that displays the power state in correspondence with the position information. 3. The mobile communication device according to claim 2, wherein the display unit visually displays a current power state of a peripheral portion of the mobile communication device. 4. The mobile communication device comprises a base station recognition circuit section for receiving a radio wave transmitted from the base station, on which a base station identification code for identifying a base station corresponding to each zone is superimposed. 3. The base station recognition circuit unit displays the power status on the display unit according to the received position information and power status related to the same base station identification code.
The mobile communication device described.