JPH10215212A - Radio base station equipment and phs base station equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize the radio base station equipment whose power consumption is optimized by adopting the selection method of power supply voltages and especially to provide the PHS base station equipment that is used in common for a private system and an outdoor public system and where the power consumption is reduced. SOLUTION: The PHS base station equipment is provided with a 1st power supply voltage generating circuit 1 that supplies a power supply voltage to a power amplifier 4, a 2nd power supply voltage generating circuit 2 that generates a power supply voltage different from that by the 1st power supply voltage generating circuit 1, a means 17 that detects whether the rated transmission power of the PHS base station equipment is high or low, and a power supply voltage selection circuit 3 that supplies a power supply voltage to the power amplifier 4 from the 1st power supply voltage generating circuit 1 or the 2nd power supply voltage generating circuit 2 through the selection.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a radio base station apparatus such as a PHS base station apparatus, and more particularly to a radio base station apparatus and a PHS base station apparatus capable of switching a power supply voltage.

[0002]

2. Description of the Related Art A conventional PHS base station apparatus of this type is shown in FIG.
It is configured as follows. In FIG. 2, a power supply voltage generating circuit 1 is a circuit that generates a power supply voltage supplied to each circuit in the PHS base station apparatus 10, and is supplied to a radio circuit unit 6 and a control circuit unit 7. The power is also supplied to the power amplifier 4 in the unit 6. The transmission wave generated by the wireless circuit unit 6 is amplified to a required transmission power by the power amplifier 4 and transmitted by the antenna 5.

Japanese Patent Application Laid-Open No. 62-232222 discloses that when a power supply voltage is detected and a low power supply voltage is used, a low power transmission reference output is used, and when a high power supply voltage is used, a high power transmission output is used. As disclosed, a wireless device in which a reference value of a transmission output can be automatically switched by a power supply voltage is disclosed.

[0004] However, this is a transmission output switching control device suitable for a wireless device or the like used with different power supply voltages such as a vehicle-mounted device and a portable device, and is not a power supply voltage switching control device. This is because, for example, a PHS base station is not configured to switch the power generation circuit depending on whether it is for private use or for outdoor public use. Must-have.

[0005]

Generally, a private PHS used as a base unit of a cordless telephone or the like in a business office.
The transmission power of the base station apparatus is as low as about 10 mW, while the PH for outdoor public installed and used outdoors is used.
The transmission power of the S base station apparatus is about 20 to 200 mW,
It has higher output than the PHS base station device for private use.

[0006] If the PHS base station apparatus is used commonly for the private use and the outdoor public, a power amplifier corresponding to a high output for the outdoor public is used as the power amplifier.

In the conventional PHS base station apparatus, as shown in FIG. 2, the power supply voltage of the power amplifier 4 is controlled by the power supply voltage generation circuit 1 regardless of whether it is used for private use or outdoor use. Supplied.

For this reason, the power amplifier 4 is used under the same conditions as in the case of the outdoor public, although the output power is lower in the case of the private use than in the case of the outdoor public, At the time of self-employment, there was a problem that power was consumed more than necessary.

In view of low power consumption, the power amplifier is not shared between the private use and the outdoor public use.
There is a method of using the one suitable for each,
In this method, there is a problem that the number of types of parts increases, and the parts management cost increases.

[0010] Further, such a problem is not limited to the PHS, but may occur in other wireless base station devices.

SUMMARY OF THE INVENTION An object of the present invention is to realize a radio base station apparatus capable of optimizing power consumption by switching a power supply voltage. It is an object of the present invention to provide a PHS base station apparatus capable of reducing power consumption.

[0012]

According to the present invention, as a means for solving the above-mentioned problems, a first power supply voltage generating circuit for supplying a power supply voltage to a power amplifier in a radio base station apparatus; A second power supply voltage generation circuit that generates a power supply voltage different from the power supply voltage generation circuit, a means for detecting whether the rated transmission power is a high-output base station device or a low-output base station device, and the detection result And a power supply voltage selection circuit for switching and supplying a power supply voltage applied to the power amplifier to one of the first power supply voltage generation circuit and the second power supply voltage generation circuit. Is provided.

[0013] In the PHS base station apparatus, a first power supply voltage generating circuit for supplying a power supply voltage to the power amplifier;
A second power supply voltage generation circuit for generating a power supply voltage different from the first power supply voltage generation circuit, and detecting whether the rated transmission power is a high-output PHS base station apparatus or a low-output PHS base station apparatus A power supply voltage selection circuit for supplying a power supply voltage applied to the power amplifier to one of the first power supply voltage generation circuit and the second power supply voltage generation circuit in accordance with the detection result; , A PHS base station apparatus characterized by having the following.

The power supply voltage selection circuit further includes a control circuit for detecting whether the base station is a private base station or an outdoor public base station and outputting a signal to the power supply voltage selection circuit. A PHS base station, wherein the power amplifier is connected to the power supply voltage generation circuit having a low output for the private use, and the power supply circuit having a high output for the outdoor public use. It is also a device.

[Operation] The present invention relates to a first power supply voltage generation circuit for supplying a power supply voltage to a power amplifier and a power supply different from the first power supply voltage generation circuit in a radio base station apparatus such as a PHS base station apparatus. A second power supply voltage generating circuit for generating a voltage, detecting whether the rated transmission power is a high-output PHS base station apparatus or a low-output PHS base station apparatus, and detecting the power supply voltage applied to the power amplifier. A power supply voltage selection circuit is provided which switches to one of the first power supply voltage generation circuit and the second power supply voltage generation circuit according to the result and supplies it.

According to the present invention, the power supply voltage of the power amplifier is detected by the control circuit section and the power supply voltage selection circuit as to whether the power supply is for private use or for outdoor public use. The power is supplied by selecting one of the second power supply voltage generation circuits. For this reason, it becomes possible to supply a power supply voltage suitable for the transmission power for each of the private use and the outdoor public to the power amplifier, and it is possible to use the power amplifier efficiently.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the drawings. FIG. 1 shows an embodiment of the present invention.

In FIG. 1, a power supply voltage generating circuit 1 is a circuit for generating a power supply voltage of a power amplifier 4 suitable for outdoor public use. The power supply voltage is also a power supply voltage required to operate each circuit in the PHS base station device 20 and is also supplied to the radio circuit unit 16 and the control circuit unit 17. The power supply voltage generation circuit 2 is a circuit that generates a power supply voltage of the power amplifier 4 which is lower than the power supply voltage generation circuit 1 and is suitable for the private use.

The power supply voltage selection circuit 3 detects whether the power supply is for private use or for outdoor public use by a signal from the control circuit unit 17 and determines the power supply voltage supplied to the power amplifier 4 by the power supply voltage generation circuit 1 or the power supply voltage. This is a circuit for selecting which of the voltage generating circuits 2 to supply.

The terminal 17a of the control circuit section 17 is a terminal for outputting a signal depending on whether it is for private use or for outdoor public use. For example, an H level is output for outdoor public use, and an L level is output for private use. If so, the H level is input to the 3c terminal of the power supply voltage selection circuit 3 for outdoor public use, and the L level is input for private use.

As a configuration of the control circuit unit 17, for example,
The installer can provide a switch to switch between private use and outdoor use, and use a circuit that detects and outputs a signal by using this switch. It can also be easily configured by using other known circuits. It is.

The power supply voltage selection circuit 3 switches to the 3a terminal when the H level is input to the terminal of the power supply voltage selection circuit 3c, and switches to the 3b terminal when the L level is input. Power supply voltage generation circuit 1
The voltage from the power supply voltage generation circuit 2 is selected and supplied to the power amplifier 4 when the voltage is for private use.

As described above, a voltage suitable for private use is supplied to the power amplifier 4 for private use and a voltage suitable for public use for outdoor public use, and the transmission wave generated by the radio circuit unit 16 is , Power amplifier 4 efficiently amplifies the output power to a required level, and transmits the output power through antenna 5.

Although the embodiment has been described with reference to the PHS base station, it is apparent that the present invention can be similarly applied to a radio base station other than the PHS, and the same effect can be obtained.

[0025]

As described above, as the radio base station apparatus of the present invention, for example, a PHS base station apparatus is suitable for each transmission power depending on whether it is used for private use or for outdoor public use. The supplied voltage is supplied to the power amplifier, so that the power amplifier can be used efficiently. For this reason, there is an effect that it can be used commonly for private use and for outdoor public use, and the power consumption can be greatly reduced.

That is, according to the present invention, the power module and the PHS base station apparatus are switched between the private module and the PHS base station apparatus by switching the power supply voltage supplied to the power module depending on whether the module is private or outdoor public. There is an effect that power consumption can be greatly reduced when used commonly for outdoor public use and for private use.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention.

FIG. 2 is a block diagram showing a conventional PHS base station device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Power supply voltage generation circuit 2 Power supply voltage generation circuit 3 Power supply voltage selection circuit 3a Power supply voltage selection circuit 3 input terminal 3b Power supply voltage selection circuit 3 input terminal 3c Power supply voltage selection circuit 3 input terminal 3d Power supply voltage selection circuit 3 output terminal 4 Power amplifier 5 antenna 6,16 wireless circuit section 7,17 control circuit section 10,20 PHS base station apparatus

Claims (3)

[Claims] A first power supply voltage generating circuit for supplying a power supply voltage to a power amplifier; and a second power supply voltage generating circuit for generating a power supply voltage different from the first power supply voltage generating circuit. Means for detecting whether the rated transmission power is a high-output base station apparatus or a low-output base station apparatus; and, according to the detection result, a power supply voltage applied to the power amplifier, the first power supply voltage And a power supply voltage selection circuit for switching and supplying the power supply voltage to one of the generation circuit and the second power supply voltage generation circuit. 2. A PHS base station apparatus, comprising: a first power supply voltage generation circuit for supplying a power supply voltage to a power amplifier; and a second power supply voltage generation circuit for generating a power supply voltage different from the first power supply voltage generation circuit. Means for detecting whether the rated transmission power is a high-output PHS base station apparatus or a low-output PHS base station apparatus; and, according to the detection result, a power supply voltage applied to the power amplifier, And a power supply voltage selection circuit for selectively supplying the power supply voltage to one of the power supply voltage generation circuit and the second power supply voltage generation circuit.
Base station device. 3. A control circuit for detecting whether the base station is a private base station or an outdoor public base station and outputting a signal to the power supply voltage selection circuit, wherein the power supply voltage selection circuit includes: 3. The power amplifier according to claim 2, wherein the power supply voltage generation circuit having a low output is connected to the power amplifier for the private use, and the power supply circuit having a high output is connected to the power amplifier for the outdoor public use. The PHS base station apparatus as described in the above.