JP2003218735A - Transceiver and radio base station equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transceiver and radio base station equipment wherein, when monitoring the transmitting signal of the transceiver portion of the equipment, the coupling amount of the input and output of the transceiver portion to its monitoring terminal can be made constant, and the adjustment of the coupling amount by depending on the inside configuration of the equipment and the variation of the cable-loss of the equipment is made unnecessary, to make the number of components, an adjustment cost, and the size of the equipment reducible. <P>SOLUTION: A monitoring terminal 109 for monitoring a transmission signal and a coupler 102g for distributing the transmission signal to the monitoring terminal 109 are integrated with a transceiver portion 102a for subjecting a transmitted and received RF signal to a band-pass filtering. Also the transceiver portion thus configured is mounted on the radio base station equipment. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transmission / reception duplexer and a radio base station apparatus equipped with the transmission / reception duplexer.

[0002]

2. Description of the Related Art FIG. 5 is a block diagram showing a configuration of a conventional radio base station apparatus. The wireless base station device shown in FIG.
An antenna unit 101 that transmits and receives RF signals, a transmission and reception amplification unit 102 that amplifies transmission and reception RF signals, and frequency conversion that converts a baseband signal into an RF signal and an RF signal from a reception amplifier into a baseband signal. Unit 103, baseband unit 104 for performing baseband signal processing, and wired transmission line interface unit 10 for converting data between the baseband unit 104 and the wired transmission line.
5 and a wireless base station control unit 107 that transmits and receives control signals to and from the wireless network control device 106 and performs wireless line management and the like. In addition, this wireless base station device,
A maintenance tool 108 for performing various settings and data collection for the wireless base station device is connected.

FIG. 6 shows one of the radio base station devices shown in FIG.
3 is a diagram showing an example of a detailed configuration of an antenna unit 101, a transmission / reception amplification unit 102, and a frequency conversion unit 103. FIG. RF
The antenna unit 101 that transmits and receives signals includes two antennas 101a and 101b. As the transmission / reception amplification unit 102, a transmission / reception duplexer unit 102a and a reception filter unit 102b that limit the band of each of the transmission and reception RF signals, and a transmission amplification unit 102c that amplifies the transmission signal.
And a variable-attenuator 102f for absorbing a variation in the coupling amount of the coupler 102e for distributing the transmission signal for monitoring to the monitor terminal 109 and a reception amplification unit 102d for amplifying the reception signal. ing.
Further, the frequency conversion unit 103 is equipped with a coupler 103a for distributing the monitor transmission signal to the monitor terminal 109 and a variable attenuator 103b for absorbing the variation in the coupling amount of the coupler. In this example, the number of wireless carriers to be transmitted is 1, and the reception is two systems for diversity reception.

Next, this operation will be described. First, the flow of received signals will be described. The receiving system has two antennas 101
2 to perform diversity combining using a and 101b
The system has a system, and the received signal is band-limited by the transmission / reception duplexer unit 102a and the reception filter 102b from each antenna, amplified by the reception amplification unit 102d, and input to the frequency conversion unit 103.

Next, the flow of the transmission signal will be described. The transmission signal is converted into a radio frequency in the frequency conversion unit 103, and then sent to the transmission amplification unit 102c, where the transmission / reception duplexer unit 10
After the band is limited by 2a, it is transmitted from the antenna 101a.

In the radio base station device, in order to monitor the transmission signal, it is necessary to output the transmission signal with a specified degree of coupling at the monitor terminal 109. Therefore, in the related art, the coupler 102e is mounted on the transmission amplification unit 102c, and a part of the transmission signal is distributed by the coupler 102e to enable monitoring. At this time, the coupler 102
The variable attenuator 102f absorbs the variation due to variation in the coupling amount of e and cable loss between the monitor terminals 109.
Was required, which led to an increase in component cost and adjustment cost and an increase in device size.

Next, FIG. 7 shows an example of a device configuration corresponding to FIG. 6 when it is desired to reduce the transmission output depending on the installation location of the base station.
Shown in. In this example, in order to make the transmission output smaller than that of the example shown in FIG. 6 by using the same device as that of FIG. 6, the transmission amplification unit 102c shown in FIG. 6 is removed and the output of the frequency conversion unit 103 is set to the transmission / reception duplexer unit. It is configured to be directly connected to 102a. Even when such a configuration is adopted, the frequency conversion unit 1
A coupler 103a for monitoring a transmission signal is mounted on the output of 03, and a variable attenuator 103b for absorbing variations is required, which inevitably results in high cost and increase in device size.

[0008]

As described above, as shown in FIG.
In the conventional example shown in FIG. 1, the transmission amplification unit 10 for monitoring the transmission signal is used.
Although the coupler 102e is mounted on the 2c, the variable attenuator 102f that absorbs the variation due to the variation of the coupling amount of the coupler 102e and the cable loss between the monitor terminals 109 is required, which increases the component cost and the adjustment cost and increases the device size. Cause increase.

Also, in the conventional example shown in FIG. 7 in which the transmission amplification section 102c is removed, similarly, a variable attenuator for absorbing variations is mounted because the coupler 103a is mounted on the output of the frequency conversion section 103 for monitoring the transmission signal. There is a problem in that the cost 103b and the device size are inevitably increased due to the necessity of 103b.

Therefore, the present invention has been made in view of the above-mentioned points, and when monitoring a transmission signal, it is possible to make constant the amount of coupling between the input and output of the transmission / reception duplexer and the monitor terminal. It is an object of the present invention to provide a transmission / reception duplexer and a radio base station device that do not require adjustment of the coupling amount due to internal configuration or cable loss variation, and can reduce parts and adjustment costs and device size. .

[0011]

In order to solve the above-mentioned problems, a transmission / reception duplexer according to the present invention transmits and receives R signals.
The present invention is characterized in that a transmission / reception duplexer for band-limiting an F signal is integrated with a monitor terminal for monitoring the transmission signal and a coupler for distributing the transmission signal to the monitor terminal. With this configuration, it is possible to reduce the loss of the coupler, contribute to lower power consumption, and reduce the parts and adjustment costs and the device size when monitoring the transmission signal.

Further, the above-mentioned transmission / reception duplexer is characterized by integrating a reception filter for band-limiting the received RF signal. With this configuration, it is possible to reduce the cost of parts and adjustment and the size of the device.

Further, a frequency conversion unit for converting the frequency of the transmission / reception signal, a transmission amplification unit for amplifying the RF signal for transmission output from the frequency conversion unit, an antenna unit for transmitting / receiving the RF signal, and the antenna A transmission / reception duplexer and a reception filter for band-limiting the respective RF signals transmitted / received through the transmission / reception unit, and a reception amplification unit for amplifying a reception signal from the transmission / reception duplexer and outputting the amplified signal to the frequency conversion unit. In the wireless base station device, as the transmission / reception duplexer, a transmission / reception duplexer in which a monitor terminal for monitoring a transmission signal and a coupler for distributing the transmission signal to the monitor terminal are integrated or a band limitation is applied to a received RF signal. It is characterized by being equipped with a transmission / reception duplexer with an integrated reception filter for application. With this configuration, it is possible to obtain a radio base station device that can reduce the cost of parts and adjustments and the device size when the transmission signal is monitored.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION A configuration example of a transmission / reception duplexer and a radio base station apparatus equipped with the transmission / reception duplexer according to the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a detailed configuration example according to the present invention regarding an antenna unit 101, a transmission / reception amplification unit 102, and a frequency conversion unit 103 in the radio base station apparatus shown in FIG. As shown in FIG. 1, two antennas 10 are provided as the antenna unit 101 that transmits and receives RF signals.
It has 1a and 101b. Further, the transmission / reception amplification unit 102 includes a transmission / reception duplexer unit 102a and a reception filter unit 102b that apply band limitation to RF signals for transmission and reception.
A transmission amplification unit 102c that amplifies the transmission signal from the frequency conversion unit 103, and a frequency conversion unit 1 that amplifies the reception signal.
03, and a coupler 102g for distributing a monitor transmission signal to the monitor terminal 109 is mounted on the transmission / reception duplexer unit 102a. In this example, the number of wireless carriers to be transmitted is 1, and the reception is two systems for diversity reception.

Next, the operation of the configuration shown in FIG. 1 will be described. The flow of the reception signal and the transmission signal is similar to that of the conventional example, and here, the monitor of the transmission signal, which is a feature of the present invention, will be described. In the wireless base station device, in order to monitor the transmission signal, it is necessary to output the transmission signal with a specified degree of coupling at the monitor terminal 109. The feature of the present invention resides in that the monitor terminal 109 and the coupler 102g are united with the transmission / reception duplexer section 102a.

With such a configuration, it is possible to make the coupling amount of the input / output of the transmission / reception duplexer section 102a and the monitor output terminal 109 constant, and the coupling can be performed depending on the internal configuration of the device and the loss variation of the cable. There is no need to adjust the amount, and the variable attenuator as in the conventional example shown in FIG. 6 is no longer necessary.

Further, FIG. 2 shows an example of a configuration in which it is desired to reduce the transmission output depending on the installation location of the base station, in contrast to the configuration shown in FIG. In FIG. 2, the transmission amplification unit 1 shown in FIG.
02c is removed, and the output of the frequency conversion unit 103 is directly connected to the transmission / reception duplexer unit 102a. Even if it is desired to lower the output level in the same device, the connection can be changed without worrying about the coupling amount. It will be possible. Further, unlike the conventional example, the coupler and the variable attenuator for adjustment, which are mounted on the frequency conversion unit 103, are not required, and the cost and the device size can be reduced.

As described above, by forming the transmission / reception duplexer section 102a and the coupler 102g in an integrated structure, it is possible to reduce the loss of the coupler, which contributes to low power consumption. The example described here is an example of one-carrier transmission, but it can also be used in a base station having a device configuration of multi-carrier transmission and transmission diversity. In this case, the conventional technique and the present invention may be selectively used for each sector.

FIG. 3 shows another embodiment of the transmission / reception duplexer section 102a. In this example, a plurality of, for example, two monitor terminals 109a and 109b are provided as the monitor terminals 109 in the transmission / reception duplexer unit 102a. The monitor terminal 109 is provided in the transmission / reception duplexer section 102a.
a, 109b and couplers 102g, 102h are mounted. By using the transmission / reception duplexer part shown in this example in the example of FIGS. 1 and 2, one monitor terminal 109a can be used for transmission signal monitoring and the other monitor terminal 10 can be used.
By connecting 9b to the transmission amplification unit 102c and the frequency conversion unit 103, it becomes possible to use it for distortion compensation control and gain control of the transmission signal. In this example, the coupler for monitoring is put on the transmission input side of the transmission / reception duplexer unit 102a, but it may be put on the transmission output side. In addition, when a plurality of couplers are mounted, the signal distributed by one coupler may be further distributed by using a coupler.

Further, in FIG. 4, the reception filter 102b is integrated with the transmission / reception duplexer section 102a in FIG. According to this configuration, as in the configuration examples of FIGS. 1 to 3, it is possible to make the coupling amount of the input / output of the transmission / reception duplexer unit 102a and the monitor terminal 109 constant, and the internal configuration of the device and the cable. It is of course unnecessary to adjust the coupling amount due to the loss variation of the above, and further, the cost of parts and adjustment and the size of the device can be reduced.

[0021]

As described above, according to the present invention, the transmission signal is distributed to the monitor terminal for monitoring the transmission signal and the monitor terminal for the transmission / reception duplexer for band-limiting the RF signal to be transmitted / received. By integrating the coupler, it becomes possible to make the coupling amount of the input / output of the transmission / reception duplexer and the monitor terminal constant, and there is no need to adjust the coupling amount due to the internal configuration of the device or the loss variation of the cable. It is possible to reduce the parts and adjustment cost for monitoring the transmission signal and the device size.

[Brief description of drawings]

FIG. 1 is a diagram showing a detailed configuration example according to the present invention regarding an antenna unit, a transmission / reception amplification unit, and a frequency conversion unit in a wireless base station device.

FIG. 2 is a diagram showing another configuration example of the present invention with respect to the configuration of FIG.

FIG. 3 is a diagram showing another example of a transmission / reception duplexer unit according to the present invention.

FIG. 4 is a diagram showing still another example of the transmission / reception duplexer unit according to the present invention.

FIG. 5 is a block diagram showing a configuration of a radio base station apparatus according to the present invention and a conventional example.

6 is a diagram showing a detailed configuration example according to a conventional example regarding an antenna unit, a transmission / reception amplification unit, and a frequency conversion unit in the radio base station apparatus shown in FIG.

FIG. 7 is a diagram showing another configuration example of the conventional example with respect to the configuration of FIG.

[Explanation of symbols]

101, 101a, 101b antenna section, 102 transmission / reception amplification section, 102a transmission / reception duplexer section, 102b reception filter section, 102c transmission amplification section, 102d reception amplification section, 102g, 102h coupler, 103 frequency conversion section, 109, 109a, 109b monitor Terminal.

Claims (3)

[Claims] 1. A transmission / reception duplexer for band-limiting an RF signal to be transmitted / received, wherein a monitor terminal for monitoring the transmission signal and a coupler for distributing the transmission signal to the monitor terminal are integrated. Shared device. 2. The transmission / reception duplexer according to claim 1, wherein a reception filter for band-limiting a received RF signal is integrated. 3. A frequency conversion unit that converts the frequency of a transmission / reception signal, a transmission amplification unit that amplifies a transmission RF signal output from the frequency conversion unit, an antenna unit that transmits / receives an RF signal, and the antenna. A radio base including a transmission / reception duplexer and a reception filter for band-limiting an RF signal transmitted / received through the unit, and a reception amplification unit for amplifying a reception signal from the transmission / reception duplexer and outputting the amplified signal to the frequency conversion unit. In the station device, the transmission / reception duplexer according to claim 1 or 2 is mounted as the transmission / reception duplexer.