JPH09130327A - Transmission output control device and control method for mobile phone - Google Patents

Abstract

(57) Abstract: A transmission output control device and method for a mobile phone capable of increasing the calling / receiving rate in a weak electric field without shortening the call time by consuming battery current. A memory for storing a transmission signal output level higher than a command level from a base station, an access channel / voice channel identification means 9 for identifying whether a transmission channel is an access channel or a voice channel, and a CPU. And a transmission level setting means 8 for setting the transmission signal output level on the basis of the identification signal received from the identification means 9 under the control of 1. The signal is transmitted according to the signal output level, and in the case of voice channel transmission, the transmission signal output level is switched to the designated level (standard level) from the base station and transmitted to reduce the battery current consumption.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transmission output control device and a transmission output control method used for a mobile communication terminal device driven by a battery (battery) such as a mobile phone and a handheld mobile phone (PHS).

[0002]

2. Description of the Related Art Conventionally, portable telephones, simplified portable telephones, etc. have a transmission output control function for controlling an output level (power level) for outputting a transmission signal to a base station.
The transmission signal output level can be arbitrarily set in several steps by U. Normally, the transmission signal output level is set by a designation from a base station or a command (hereinafter, designated), but the designation from the base station is determined based on the electric field strength of the reception signal from the mobile communication terminal device. Since the designation for the access channel and the designation for the voice channel are normally the same, the transmission signal output level for the access channel and the transmission signal output level for the voice channel are set to be the same (details will be described later). ).

As a transmission output control device and a control method for controlling the transmission signal output level as described above, there are conventionally those shown in FIGS. 3 and 4 (a) and (b). FIG. 3 is a block diagram showing an example of a conventional transmission output control device, FIG. 4 shows a method of controlling a transmission signal output level using the transmission output control device shown in FIG. 3, and FIG. Diagram showing setting of transmission signal output level,
FIG. 6B is a diagram showing setting of a transmission signal output level in a weak electric field.

In FIG. 3, reference numeral 1 denotes a transmission circuit which processes a transmission signal and outputs a high frequency modulation signal through an antenna and an uplink (not shown), and 2 a transmission signal output set by the transmission level setting means 5. Level (also referred to as transmission level) voltage / current conversion circuit for converting the voltage into current and outputting it to the transmission circuit to control the output level of the high-frequency modulated signal to be transmitted. It is a part of the CPU function that includes the level setting means 5 and sets the transmission signal output level.

Further, 3 is a calling recognition means for recognizing the transmission to the base station and notifying it to the transmission level setting means 5. 4 is a transmission level for recognizing an incoming call from the base station and responding to the base station. Incoming call recognizing means 5 for notifying the setting means 5 of the calling means 5 or outgoing call recognizing means 4
When a signal is received from the transmitter circuit 1 under the control of the CPU
Is a transmission level setting means for setting the output level of the transmission signal transmitted from the base station to the base station and outputting it to the voltage / current conversion circuit 2.

Next, the operation of the above-mentioned conventional transmission output control device will be described with reference to FIG. First, when the call recognizing means 3 or the call recognizing means 4 recognizes the transmission of a transmission signal (including a return signal for an incoming signal) and notifies the transmission level setting means 5 of the transmission signal, the transmission level setting means 5 C
Based on the control of the PU, the output level of the transmission signal transmitted to the base station is set, D / A converted, and output to the voltage / current conversion circuit 2. The voltage / current conversion circuit 2 converts the input analog transmission signal output level voltage into a current and outputs it to the transmission circuit 1. The transmission circuit 1 transmits a transmission signal from the antenna with the output power set by the transmission signal output level current.

Next, a transmission output control method in the above-mentioned conventional transmission output control device will be described with reference to FIG. In FIGS. 4A and 4B, 31 and 33 are transmission signal output levels of the access channel, and 32 and 3.
Reference numeral 4 is a transmission signal output level of the voice channel. As can be seen from FIG. 4, the transmission signal output level set by the transmission level setting means 5 under the control of the CPU is usually set by the designation from the base station, but as described above, the transmission signal output for the access channel is set. Level 3
1, 33 and the transmission signal output levels 32 and 34 for the voice channel are set to be the same.

That is, when the mobile communication terminal device is capable of transmitting and receiving with a normal electric field strength, the transmission signal output of both the access channel and the voice channel is designated by the base station as shown in FIG. The level is set to the standard level (standard setting), but when the mobile communication terminal device transmits and receives in a weak electric field, (b) in FIG.
As shown in, the transmission signal output level of both the access channel and the voice channel is 1 dB from the standard level.
It is set to a high +1 dB and controlled to maintain its transmission and reception.

[0009]

In the above-described conventional transmission output control method, when the transmission signal output level is raised in order to increase the outgoing / incoming rate in a weak electric field, that is, the success rate of outgoing / incoming, the set value of the output level is set. It was necessary to set the maximum value of (1) higher within the range defined by the system standard (-4 dB ≤ standard setting value ≤ +2 dB).

However, when the transmission signal output level is set high in this way, the call is successfully accessed, and the transmission to the voice channel is started, the base station does not instruct to decrease the transmission signal output level (the above-mentioned case). As described above, unless there is a special reason such as a change in electric field strength, the designation is not given), and the voice channel is transmitted while maintaining the transmission signal output level set high. Therefore, there is a problem that the current consumption is increased and the call time for one charge is shortened.

The present invention has been made in view of the above-mentioned conventional problems, and it is possible to improve the transmission / reception rate in a weak electric field without shortening the call time for one charge due to an increase in current consumption. An object is to provide an output control device and a control method.

[0012]

In the transmission output control apparatus according to the present invention, the CPU stores a memory for storing a transmission signal output level higher than a specified level or a standard level from the base station, and the channel for transmission is an access channel. Access channel / voice channel identifying means for identifying whether the channel is a voice channel or not. In the case of transmitting the access channel, a higher transmission signal output level is read from the memory and transmitted according to the transmission signal output level. In this case, the transmission signal output level is switched to a designated level from the base station or a standard level for transmission.

According to the present invention, it is possible to obtain a transmission output control device capable of improving the call originating / receiving rate in a weak electric field without shortening the call time for one charge due to an increase in current consumption.

In the transmission output control method according to the present invention, the memory of the CPU stores the transmission signal output level higher than the specified level or the standard level from the base station, and if the channel to be transmitted is the access channel, the memory is stored in the memory. It includes the steps of reading out a higher transmission signal output level and transmitting at the transmission signal output level, and in the case of voice channel transmission, switching the transmission signal output level to a designated level from the base station or transmitting it, and transmitting. Only in the case of channel transmission, transmission is performed at a transmission signal output level higher than a specified level or standard level from the base station.

According to the present invention, it is possible to obtain a transmission output control method capable of improving the calling / receiving rate in a weak electric field without shortening the call time for one charging due to an increase in current consumption.

Further, in the transmission output control method according to the present invention, in the case of transmission of the access channel, a higher transmission signal output level is read from the memory and is transmitted at the transmission signal output level, or the designated level from the base station is set. Alternatively, it includes a step of selecting whether to transmit according to the standard level, and selects the transmission signal output level when transmitting the access channel according to the state of the line and transmits.

According to the present invention, it is possible to obtain a transmission output control method capable of improving the call origination / termination rate in a weak electric field without shortening the call time for one charge by increasing the consumption current.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is a CPU for controlling a transmission signal output level of a transmission signal.
And a memory for storing a transmission signal output level higher than a specified level or a standard level from the base station, an access channel / voice channel identification means for identifying whether the transmission channel is an access channel or a voice channel, and the control of the CPU. Access level / means for setting the transmission signal output level based on the identification signal received from the access channel / voice channel identification means, and a transmission circuit for transmitting the transmission signal at the set transmission signal output level. In the case of channel transmission, a higher transmission signal output level is read from the memory and transmitted according to that transmission signal output level. In the case of voice channel transmission, the transmission signal output level is switched to the specified level or standard level from the base station. I tried to send it And than without the call time is shortened by increasing the consumed current, it has an effect that it is possible to improve the outgoing call rate.

According to the second aspect of the present invention, the memory stores a transmission signal output level higher than a specified level or a standard level from the base station, and the channel for transmission under the control of the CPU is an access channel or a voice channel. When the transmission of the access channel is recognized, the higher transmission signal output level is read from the memory and transmitted according to the transmission signal output level. When the transmission of the voice channel is recognized, the transmission signal output level is changed to the base station. It includes each step of switching to a specified level or standard level from the base station, and transmits at a transmission signal output level higher than the specified level or standard level from the base station only in the case of access channel transmission. Call rate can be improved without shortening the call time due to the increase in current. It has the effect that it is.

According to the third aspect of the present invention, when the transmission of the access channel is recognized, a higher transmission signal output level is read from the memory and transmitted at the transmission signal output level, or the base station outputs the signal. The transmission signal output level when the transmission of the access channel is recognized is the specified level from the base station or the standard level or the higher transmission level from the memory. When the line condition is good, the current consumption can be further reduced and the call originating / receiving rate can be improved.

An embodiment of the present invention will be described in detail below with reference to the accompanying drawings and FIGS. 1 and 2. FIG. 1 is a block diagram showing an example of a transmission output control device according to an embodiment of the present invention, and FIG. 2 shows a method of controlling the setting of a transmission signal output level using the transmission output control device shown in FIG. FIG. 6 is a timing diagram at the time of call access in which the vertical axis represents the transmission signal output level (dBW) and the horizontal axis represents the transmission time (seconds).

First, in FIG. 1, 1 is a transmission circuit for processing a transmission signal and outputting a high frequency modulated signal through an antenna and an uplink (not shown), and 2 is a transmission set by the transmission level setting means 8. Signal output level voltage / current conversion circuit for converting the voltage into current and outputting it to the transmission circuit to control the output level of the high frequency modulated signal transmitted from the antenna,
Reference numeral 3 is a call recognizing means for recognizing the transmission to the base station and notifying the transmission level setting means 8 of the same. Reference numeral 4 is for the transmission level setting means 8 to recognize the incoming call from the base station and respond to the base station. This is an incoming call recognition means for notifying it, and these respective elements are the same as those of the above-mentioned conventional example.

Further, 7 is higher than a transmission signal output level or a standard level designated by the calling recognition means 3, the incoming call recognition means 4, the transmission level setting means 8, the access channel / voice channel identification means 9 and the base station (described later). It is a part of the CPU function for setting the transmission signal output level, including a memory (not shown) for storing the transmission signal output level.

When receiving a signal from the call recognizing means 3 or the call recognizing means 4, 8 is sent from the transmitting circuit 1 to the base station by the identification signal from the access channel / voice channel identifying means 9 under the control of the CPU. The output level of the transmission signal to be transmitted is set to a standard level (or a specified level from the base station) or a level higher than that level (read from the memory) and output to the voltage / current conversion circuit 2. The transmission level setting means 9 is an access channel / voice channel identification means for sending to the setting means 8 an identification signal for recognizing whether the transmission signal transmitted to the base station is an access channel or a voice channel.

Next, the operation of the transmission output control device according to the present embodiment will be described with reference to FIG. First,
When the call recognizing means 3 or the call recognizing means 4 recognizes the transmission of the transmission signal (including the return signal for the reception signal) and notifies the transmission level setting means 8 of it, at the same time,
The transmission level setting means 8 receives the identification signal from the access channel / voice channel identification means 9 under the control of the CPU.

Therefore, the transmission level setting means 8 sets the output level of the transmission signal transmitted from the transmission circuit 1 to the base station based on the received identification signal to the standard level (designated level).
Set to or higher (to be described later), D / A converted, and output to the voltage / current conversion circuit 2. The voltage / current conversion circuit 2 converts the input voltage of the analog transmission signal output level into a current and outputs it to the transmission circuit 1. The transmission circuit 1 transmits a transmission signal from the antenna with the output power set by the current of the transmission signal output level.

The setting of the transmission signal output level by the transmission level setting means 8 in the present embodiment will be described.
As described above, the transmission signal output level is normally determined based on the designation from the base station, but when it is recognized that the access channel is transmitted based on the identification signal from the access channel / voice channel identification means 9, the transmission signal is transmitted. In order to increase the outgoing / incoming call rate, the CPU has a level higher than the transmission signal output level designated by the base station from its memory (1 dB higher in the present embodiment (other values within the range of the above-mentioned system standard). Read out) and sent to the transmission level setting means 8 to set the transmission signal output level.

However, depending on the environment or condition of the line such as noise and electric field strength, the output level of the transmission signal of the voice channel is 1 dB higher than the output level of the transmission signal of the access channel. It may be set to a lower value). Also, CP
U can also be determined by selecting the transmission signal output level by its own judgment, unless otherwise specified by the base station, or depending on the environment or state of the line.

Next, the transmission output control method using the transmission output control device according to the embodiment of the present invention will be described in detail mainly with reference to FIG. In FIG. 2, 11
Is a transmission signal output level of the access channel, and 12 is a transmission signal output level of the voice channel.

First, the transmission output control device shown in FIG. 1 is a preferred example of the embodiment of the present invention, and the transmission output control method according to the present invention can be implemented by using other devices. Is possible. First, when making a call access, the call recognition is performed by the call recognition means 3, and when there is a designation from the base station, the channel is selected according to it, and when there is no designation, the electric field strength is controlled by the CPU. Select the higher channel and set a frequency synthesizer (not shown) to that frequency to lock the access channel to that channel.

At this time, when the transmission level setting means 8 recognizes that the channel is an access channel based on the identification signal from the access channel / voice channel identification means 9 under the control of the CPU, the transmission signal output level (FIG. 2). 11) is 1 dB higher (as described above,
Other transmission signal output levels may be set) and transmission is started.

After the access channel ends, the transmission is temporarily stopped, and the voice channel is designated by the base station,
The frequency synthesizer is set to the voice channel under the control of the CPU. Then, the transmission level setting means 8
Recognizes that the channel is a voice channel by the identification signal from the access channel / voice channel identification means 9 and sets the transmission signal output level to CP.
The transmission is started by setting to the standard level designated by U or the designated level (12 in FIG. 2) from the base station.

The transmission output control method according to the present embodiment described above has been described in the case of call recognition, but the same applies to the case of call recognition, so a detailed description will be omitted.

Further, although the transmission signal output level is always switched in the present embodiment, C is taken into consideration in consideration of the line environment or state such as electric field strength and noise.
The PU may be controlled to selectively change the transmission signal output level in the access channel.
For example, when there is little noise and the electric field strength is sufficiently accessible to the base station, it is possible to select not to switch the transmission signal output level as is conventionally done.

As described above, when making or receiving a call using the mobile phone or the simplified mobile phone according to the present embodiment, first, the call recognition or the call recognition is performed, and the frequency synthesizer is set to the access channel. The transmission signal output level is set, but when it is recognized as an access channel, the transmission signal output level is set to be higher than the standard level. As a result, the data recognition rate is improved, and the call originating / receiving rate can be improved.

Moreover, when the frequency synthesizer is designated as the voice channel, the output level of the transmission signal is set to the standard level, so that the current consumption is small during the long time required for a call, so the increase in the current consumption is short. Since it is only during the access channel time, it can be seen that the reduction of the call time due to the increase of the current consumption is almost negligible.

[0037]

The transmission output control apparatus and method for a mobile phone according to the present invention is configured as described above, and particularly in the case of transmission in a weak electric field, the transmission signal output level of the access channel is increased to increase the transmission signal output level of the voice channel. By lowering the transmission signal output level (or setting it to the normal level), it is possible to improve the transmission / reception rate of the mobile phone. Moreover, the increase in the output level of the transmission signal according to the present invention is only in the access channel for a short time, and thus only the instantaneous consumption current increases. Therefore, the reduction in the talk time due to the increase in the current is negligible. Few.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an example of a transmission output control device according to an embodiment of the present invention.

FIG. 2 is a timing diagram during call access showing a method of controlling setting of a transmission signal output level using the transmission output control device shown in FIG.

FIG. 3 is a block diagram showing an example of a conventional transmission output control device.

FIG. 4 shows a method for controlling a transmission signal output level using the transmission output control device shown in FIG. 3, (a) shows setting of a transmission signal output level in a standard electric field, and (b) shows a setting in a weak electric field. Diagram showing setting of transmission signal output level

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 transmission circuit 2 voltage / current conversion circuit 3 calling recognition means 4 incoming call recognition means 5 transmission level setting means 6, 7 a part of CPU function 8 transmission level setting means 9 access channel / voice channel identification means 11 transmission signal of access channel Output level 12 Voice channel transmission signal output level 31, 33 Access channel transmission signal output level 32, 34 Voice channel transmission signal output level

Claims (3)

[Claims] 1. A CPU for controlling a transmission signal output level of a transmission signal, a memory for storing a transmission signal output level higher than a specified level or a standard level from a base station, and whether the transmission channel is an access channel or a voice channel. Access channel / voice channel identification means, transmission level setting means for setting a transmission signal output level based on an identification signal received from the access channel / voice channel identification means under the control of the CPU, and the set transmission. And a transmission circuit for transmitting a transmission signal according to a signal output level. For access channel transmission, a higher transmission signal output level is read from the memory and transmitted according to the transmission signal output level, and for voice channel transmission, transmission is performed. Set the signal output level from the base station. Transmission output control apparatus is characterized in that so as to transmit the switching level or standard level. 2. A memory stores a transmission signal output level higher than a specified level or a standard level from the base station, and C
The PU control recognizes whether the channel to be transmitted is an access channel or a voice channel. In the case of transmission of the access channel, a higher transmission signal output level is read from the memory and transmission is performed according to the transmission signal output level. In the case of including the steps of switching the transmission signal output level to the designated level or standard level from the base station and transmitting, only for access channel transmission, the transmission signal output level higher than the designated level or standard level from the base station is transmitted. A transmission output control method characterized in that. 3. When the transmission of the access channel is recognized, a higher transmission signal output level is read from the memory and is transmitted at the transmission signal output level, or is transmitted at a designated level or a standard level from the base station. Characterized in that the transmission signal output level in the case of transmitting the access channel is selected to be a designated level from the base station or a standard level or a higher transmission level from the memory for transmission. The transmission output control method according to claim 2.