JP2000341187A - Base station system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily realize a system technology for wire wiring for many digital signals in a bus form at high-speed decreasing the number of outgoing base band signals to a mobile device and the number of signals for RL buses to simultaneously transmit transmission power information to a transmission means. SOLUTION: RX sections 114-1 to 114-6, whose number is required for diversity reception of all sectors of one reception carrier convert both RF reception signals that are received for each sector of one reception carrier through diversity into digital reception signals, the digital reception signals are concentrated by a single RL bus 115 and outputted to BB sections 116-1 to 16-n, whose number is required to hold all incoming radio channels in one reception cattier, where the signal receive maximum ratio synthesis processing, with respect to a incoming radio channel in the same reception carrier to generate an incoming baser band signal for each incoming radio channel, and transmission power control processing is applied to each incoming radio channel to output outgoing transmission power information.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication system, in which transmission information is multiplied by a spreading code and transmitted in units of frames, and the same spreading code is multiplied by the same spreading code on the receiving side to achieve original transmission. CDMA (Code Division Multiple Access) method for extracting information,
W-CDMA (Wide band-Code Division Multiple Acc)
ess) The present invention relates to a base station device that communicates with a mobile station device using a method or the like.

[0002]

2. Description of the Related Art FIG. 2 is a block diagram showing a configuration of a conventional base station apparatus.

The conventional base station apparatus 200 shown in FIG.
Is an example in the case of a 6-sector configuration, and the first and second sets of each set for performing diversity reception provided in each of two sectors are provided.
..., the sixth antenna 201-1 and 202-1, 201-
2 and 202-2,..., 201-6 and 202-6;
The first to sixth common AMP units 20 connected to the antennas 201-1 and 202-1 to 201-6 and 202-6
3-1 to 203-6 and first to sixth TRX units 204-1
To 204-6 and the first to n-th nBB / CHC units 205-1
205-n, the HWYINT unit 206, and the CNT unit 2
07, a control bus 208, an RL bus 209, an FL bus 210, and an HWY bus 211.

First to sixth common AMP units 203-1 to 20
3-6 is a plurality of carrier RF transmission signals 212-1 to 212-2.
213, RF receiving signals 216-1 and 214-1, 213-1, 213-2 and 214-2 of 12-6 and plural carriers
-6 and 214-6 are commonly amplified.

[0005] The TRX units 204-1 to 204-6 have a transmission modulation function and a reception function.

[0006] The receiving function is to receive RF signals 213-1 and 214-1, 213-2 and 21 for both diversity reception for a plurality of reception carriers for each reception carrier.
,.., 213-6 and 214-6 are converted into digital reception signals and output to the RL bus 209.

[0007] The transmission modulation function modulates and spreads a downlink baseband signal for each downlink radio channel from the base station apparatus 200 to a mobile station apparatus (not shown), and then transmits an RF transmission signal 212-1 in a predetermined frequency band. ~ 212-6,
Thereafter, the transmission power is adjusted, and RF transmission signals 212-1 to 212-6 of all radio channels are superimposed for each transmission carrier and output to each of the common AMP units 203-1 to 203-6. .

First to n-th BB / CHC units 205-1 and 205-2
05-n is provided with a required number (in this example, n) capable of securing the number of resources according to the number of channels accommodated and the capacity of the base station apparatus, and has the following three functions to be provided. is there.

First, different diversity reception of the same radio channel in the same radio channel, synchronization function for synchronizing a plurality of desired waves scattered in radio channels of different sectors, and RAKE reception demodulation based on maximum ratio combining It generates an uplink baseband signal by its function.

[0010] Further, it has a transmission power control function, a radio channel state measurement function, and a channel coding function / decoding function between a baseband signal and a main signal. The signal and the transmission power information are output to the FL bus 210.

[0011] Furthermore, the radio channel state obtained in the course of channel decoding is collected by a radio channel state measurement function and is utilized in a transmission power control function.

The HWYINT section 206 relays the main signal between the transmission path and the BB / CHC sections 205-1 to 205-n, and at the same time, generates a reference timing of the entire apparatus based on the clock signal extracted from the transmission path, and It has a function of generating a clock to be supplied to the entire system, and further has a function of relaying call control information and operation management information exchanged via a transmission line to the CNT unit 207.

The CNT unit 207 controls, via a control bus 208, resource allocation and release of each unit in the apparatus accompanying call control and handoff control, and monitoring and control of the operation state of each unit in the apparatus.

The RL bus 209 is connected to each TRX unit 204-1.
２０４204-6 are collected, and all B
Broadcast to the B / CHC units 205-1 to 205-n. That is, the uplink signal from the mobile station apparatus to the base station apparatus 200 is concentrated.

However, as an example of the signal configuration of the RL bus 209, when the modulation method is QPSK and the resolution of A / D conversion is 6 bits, a total of 12 bits of the in-phase component (I) and the quadrature component (Q) are digital. The RL bus 209 is a reception signal. The RL bus 209 is obtained by concentrating the digital reception signal of 12 bits by the number corresponding to the number of reception carriers × the number of sectors × the number of diversity receptions.

That is, if the number of reception carriers is 2, the number of sectors is 6, and the number of diversity receptions is 2, RL bus 209
Is a large number of signals that totals 288 lines.

The FL bus 210 is connected to each BB / CHC unit 20
5-1 to 205-n to all TRX units 204-1 to 204
This is for broadcasting the downlink baseband signal and transmission power information to -6.

The HWY bus 211 is connected to the HWYINT unit 20
6 relays the main signal between any one of the BB / CHC units 205-1 to 205-n.

The control bus 208 is used to exchange monitoring control information between the CNT unit 207 and other units.

The operation of the base station apparatus 200 having such a configuration will be described along the signal flows in the uplink and downlink directions.

In the upward direction, each antenna 201-1
, And 202-1 to 201-6 and 202-6, the RF reception signals 213-1, 214-1 to 213-6, and 214-6 of a plurality of carriers are respectively
The common reception and amplification are performed by P sections 203-1 to 203-6, and transmitted to TRX sections 204-1 to 204-6 of the corresponding sector.

The TRX units 204-1 to 204-6 transmit the received RF reception signals 213-1 and 213-1 by the reception function.
14-1 to 213-6 and 214-6 are converted into digital reception signals for each reception carrier and transmitted to the RL bus 209.

Each BB / CHC unit 205-1 to 205-n
Are all carriers flowing on the RL bus 205,
A digital reception signal of both the sector and the diversity reception is input, an RF reception signal group to be rake-received and demodulated is sequentially selected by a synchronization function, and an upstream baseband signal is converted by a rake reception demodulation function based on maximum ratio combining. Reproduce.

Further, each of the BB / CHC units 205-1 to 20
5-n transmits the uplink main signal to the HWY bus 211 after the channel coding process for the uplink baseband signal by the channel decoding function, and
The NT unit 206 relays and transmits to the transmission path.

In the downstream direction, HWYIN
The downlink main signal received via the T unit 206 and the HWY bus 211 is converted into a downlink baseband signal by a channel coding process using a channel coding function of each of the BB / CHC units 205-1 to 205-n. Output to 210.

Further, each of the BB / CHC units 205-1 to 20
5-n outputs transmission power information in synchronization with the downlink baseband signal by the transmission power control function. Here, the downlink baseband signal and the transmission power information on the FL bus 210 are stored in the TRX units 204-1 to 204-6 of all the sectors.
Will be broadcast to

TRX sections 204-1 to 204-6 of one or more sectors accommodating the radio channel convert a downlink baseband signal into an RF transmission signal by a transmission modulation function, and adjust a transmission level according to transmission power information. After the adjustment, the RF transmission signals 212-1 to 212-6 of all the radio channels are superimposed for each transmission carrier, and after a plurality of carriers are multiplexed, each of the common AMP units 203-1 to 206-1
Transmit to 3-6.

Each of the common AMP units 203-1 to 203-6
, Amplifies the RF transmission signals 212-1 to 212-6 in common, and wirelessly transmits the RF transmission signals from the antennas 201-1 and 202-1 to 201-6 and 202-6.

The CNT unit 207 controls the transmission and reception operations in the uplink and downlink directions performed by the base station apparatus 200 in conjunction with call control and handoff.
Based on call control information and operation management information transmitted and received through the INT unit 206, allocation and release of resources of each unit;
An interlocking operation of the resources of each unit is controlled, and an instruction and a response therefor are performed via the control bus 208.

[0030]

However, in the conventional apparatus, the BB / CHC units 205-1 to 205-
n can be used as a common resource for a plurality of receiving carriers, the RL bus 209 has a huge number of signals, and if it is necessary to increase the number of carriers and sectors, the signal on the FL bus 210 is further increased. There is a problem in that the number of devices is increased, and it is extremely difficult to implement a technique for wiring a large number of digital signals in a bus format at high speed.

The present invention has been made in view of the above point, and by reducing the number of RL bus signals for collecting upstream digital reception signals from a mobile station apparatus to a base station apparatus, a large number of digital signals can be obtained at high speed. It is an object of the present invention to provide a base station apparatus capable of easily realizing a technology for realizing a device for wiring a network in a bus format.

[0032]

SUMMARY OF THE INVENTION According to the present invention, there are provided a number of receiving means necessary for diversity receiving all sectors of one receiving carrier and a number required for accommodating all uplink radio channels in one receiving carrier. By connecting the baseband processing means with a single bus means, the number of signals on the bus means was reduced, and a device implementation technique for wiring a large number of digital signals in a bus format at high speed was easily realized. .

[0033]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A first aspect of the present invention is a receiving means for converting a diversity-received signal into a digital reception signal by a number necessary for diversity reception of all sectors of one reception carrier, and A mechanism for connecting the required number of baseband processing means for combining the digital reception signals with the maximum ratio and accommodating all uplink radio channels in one reception carrier by a single bus means. Take the configuration.

According to this configuration, the number of signals on the bus means can be reduced, and an apparatus technology for wiring a large number of digital signals at high speed in a bus format can be easily realized.

According to a second aspect of the present invention, a received signal diversity-received from a mobile station device is converted into a digital received signal for each sector of one received carrier, and the received signal is required for diversity reception of all sectors of the one received carrier. Number of receiving means and the maximum ratio combining of the digital reception signals from the receiving means to generate an uplink baseband signal for each uplink radio channel from the mobile station apparatus, and to download for each uplink radio channel. A baseband processing means for outputting transmission power information and as many baseband processing means as necessary for accommodating all uplink radio channels in the one receiving carrier, and a single unit for concentrating the digital reception signal and outputting to the baseband processing means And a first bus means.

According to this configuration, the receiving means having the A / D conversion function and the baseband processing means having the maximum ratio combining function are connected by the single first bus means, and are dedicated for each receiving carrier. Therefore, the number of signals of the first bus means for connecting the respective functions can be reduced, and the difficulty of a device implementation technique for wiring a large number of digital signals in a bus format at high speed can be reduced. .

According to a third aspect of the present invention, in the second aspect, the baseband processing means converts the digital reception signal into
By performing a synchronization process and a RAKE reception demodulation process based on a maximum ratio combining for uplink radio channels in the same reception carrier, an uplink baseband signal is generated for each uplink radio channel and transmitted for each uplink radio channel. A configuration for performing power control processing and outputting downlink transmission power information is employed.

According to this configuration, the receiving means having the A / D conversion function and the baseband processing means having the synchronizing function, the RAKE reception demodulation function and the transmission power control function are connected by a single first bus means. Since the dedicated bus is provided for each receiving carrier, the number of signals of the first bus means for connecting the respective functions can be reduced. Difficulty can be reduced.

According to a fourth aspect of the present invention, in the second aspect or the third aspect, the deinterleave processing, the error detection and the correction decoding processing are performed on the uplink baseband signal output from the baseband processing means. After the addition, by performing channel decoding, a channel decoding function for restoring the uplink main signal, and error detection / correction encoding of the downlink main signal, and interleaving, and the symbol sequence after channel coding is converted to a downlink baseband signal. A plurality of codec units having a channel coding function for transmitting the baseband processing unit, and a second bus unit for connecting the baseband processing unit provided for each reception carrier to any of the codec units. take.

According to this configuration, the codec means is
By using functions (processing resources) that are commonly assigned to a plurality of reception carriers, the use of resources can be made more efficient, and the device scale can be reduced.

According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the CDMA system or the W-CD
The configuration adopting the MA method is adopted.

According to this configuration, the CDMA system or the W-
Even in a base station apparatus to which the CDMA system is applied, the first
The same operation and effect as any of the embodiments to the fourth embodiment can be obtained.

A sixth aspect of the present invention employs a configuration in which a mobile communication system includes the base station apparatus according to any one of the first to fifth aspects.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(Embodiment) FIG. 1 is a block diagram showing a configuration of a base station apparatus according to an embodiment of the present invention.

The conventional base station apparatus 100 shown in FIG.
Is an example of a 6-sector configuration accommodating two reception carriers, and two sets of first, second,...
1 and 102-1, 101-2 and 102-2,..., 1
01-6 and 102-6, the first to sixth common AMP units 103-1 to 103-6 connected to the antennas 101-1 and 102-1 to 101-6 and 102-6, Sixth RF distribution units 104-1 to 104-6, and first and second reception carrier reception units 105-1 and 105-2
And the first to sixth TX sections 106-1 to 106-6,
To the n-th CHC units 107-1 to 107-n and HWYIN
A T unit 108, a CNT unit 109, a control bus 110,
RBC bus 111, FL bus 112, HWY bus 1
13 are provided.

The first receiving carrier receiving section 105-1
Are the first to sixth RX units 114-1 to 114-6 and RL
Bus 115, first to n-th BB units 116-1 to 116-
n.

The second receiving carrier receiving section 105-2 includes first to sixth RX sections 117-1 to 117-6 and RL bus 1
18 and first to n-th BB units 119-1 to 119 -n.

First to sixth common AMP units 103-1 to 103-1
3-6, RF transmission signals 120-1 to 120-1 of a plurality of carriers
20-6 and RF reception signals (first and second RF reception signals) of the first and second reception carriers (first and second RF reception signals) 121-1 and 122-
1, 121-2 and 122-2, ..., 121-6 and 1
22-6 is commonly amplified.

The RF distributors 104-1 to 104-6 respectively distribute the first RF reception signals 121-1 to 121-6 and the second RF reception signals 122-1 to 122-6 into two parts. Of the first RF reception signals 121-1 to 121-
6 and the second RF reception signals 122-1 to 122-6 are transmitted to the RX units 114-1 to 114-1 of the first reception carrier receiving unit 105-1.
114-6, and outputs the other first RF reception signal 121-
1-1121-6 and second RF reception signals 122-1 to 122
−6 to the RX units 117-1 to 117-6 of the second reception carrier receiving unit 105-2.

However, in FIG. 1, the first RF distributor 104-
1, only the RF reception signal 121-1 and the second RF reception signal 122-1 are denoted by reference numerals 121-1 and 122-1.
1 is shown in parentheses.

The first and second receiving carrier receiving sections 105-
1 and 105-2 are RX units 114-1 to 114-6 and RX unit 11 assigned to the same reception carrier.
7-1 to 117-6, and the RL bus 115 and the RL bus 118 are divided for easy understanding.

That is, the two receiving carriers accommodated by the base station apparatus 100 of the present invention are defined as a first receiving carrier and a second receiving carrier, and the RX units 114-1 to 114-6 assigned to the first receiving carrier. , RL bus 115 and BB units 116-1 to 116-n, and RX units 117-1 to 117-6, RL bus 118 and BB unit 1 assigned to the second reception carrier.
19-1 to 119-n are grouped.

Each of the RX units 114-1 to 114-6 and RX
The units 117-1 to 117-6 have a receiving function for one sector of one receiving carrier, and the first and second RF receiving signals 121-1 and 122-1, 121-1 for both diversity receiving of one receiving carrier. 2 and 122-
, 121-6 and 122-6 are converted into digital reception signals and output to the RL buses 115 and 118, respectively.

The RL buses 115 and 118 are connected to the respective RX units 1
14-1 to 114-6 and RX units 117-1 to 117-
6 and concentrates on the digital reception signal from all the BB units 116.
-1 to 116-n and the BB units 119-1 to 119-n. That is, the uplink signal from the mobile station device (not shown) to the base station device 100 is concentrated.

The number of signals on the RL bus 115 or 118 is 144 when converted under the same conditions as the conventional base station apparatus 200 shown in FIG. 2 because the number of received carriers is limited to one. Fits. That is, as compared with the conventional base station apparatus 200 of FIG.
Signal number is halved.

Each of the BB units 116-1 to 116-n and BB
The units 119-1 to 119-n have a synchronization function, a rake reception / demodulation function, and a transmission power control function. The synchronization function and the rake reception / demodulation function allow signals of an uplink radio channel on one reception carrier to be transmitted. The signal is converted into an uplink baseband signal and output to the RBC bus 111, and the transmission power information is transmitted by the transmission power control function to the FL bus 112.
Output to

The RBC bus 111 is connected to all BB units 116-1.
116-n and the BB units 119-1 to 119-n and all the CHC units 107-1 to 107-n are used for exchanging uplink baseband signals and radio channel state information.

The FL bus 112 is connected to each of the BB sections 116-1 to 116-1.
The transmission power information from the BB units 119-1 to 119-n and the downlink baseband signals from the CHC units 107-1 to 107-n are transmitted to all the TX units 106-1 to 106-106.
Broadcast to -6.

The CHC units 107-1 to 107-n have a channel coding function / channel decoding function and a radio channel state measuring function, and perform the downlink and uplink directions according to the channel coding function / channel decoding function. Performs conversion between a baseband signal and a main signal, and a BB unit 116-1 through RB unit 116-1 through an RBC bus 111 by a wireless channel state measurement function.
16-n and wireless channel state information used in the transmission power function of the BB units 119-1 to 119-n.

The CNT unit 109 controls, via the control bus 110, resource allocation and release of each unit in the apparatus accompanying call control and handoff control, and monitoring and control of the operation state of each unit in the apparatus.

Next, the base station apparatus 100 having such a configuration will be described.
Will be described.

In the upstream direction, RF receiving signals 121-1 and 1 of a plurality of carriers simultaneously received from antennas 101-1 and 102-1 to 101-6 and 102-6.
22-1 to 121-6 and 122-6 are subjected to common reception and amplification in common AMP sections 103-1 to 103-6, and then RF
RX sections 114-1 to 114-6 of first reception carrier receiving section 105-1 are provided by distribution sections 104-1 to 104-6.
RX section 117 of second receiving carrier receiving section 105-2
-1 to 117-6.

The RX units 114-1 to 114-6 have
The CNT unit 109 processes only the first reception carrier.
And RX units 117-1 to 117-6.
Is set in advance so that only the second reception carrier is processed.
This is set by the T unit 109.

The RF reception signal 121- of the first reception carrier
1 and 122-1 to 121-6 and 122-6 are RX
By the receiving function of the units 114-1 to 114-6, each time diversity reception is performed, the signal is converted into a digital reception signal and transmitted to the RL bus 115.

The BB units 116-1 to 116-n receive all the sectors flowing on the RL bus 115 and the digital reception signals of both the diversity reception and the uplink radio transmission by the synchronization function and the RAKE reception demodulation function. The base station reproduces the uplink baseband signal for each channel and
Output to

The BB units 116-1 to 116-n are
The transmission power control function outputs downlink transmission power information of the radio channel to the FL bus 112.

The CHC units 107-1 to 107-n
An uplink baseband signal of the radio channel is extracted from the C bus 111, converted into an uplink main signal by a channel decoding function, and transmitted to the HWY bus 113.

The radio channel state measuring function of the CHC sections 107-1 to 107-n converts the radio channel state information obtained in the course of channel decoding into BB sections 116-1 to -1 for accommodating the uplink radio channel. 116-n
And the RBC bus 111 to the BB units 119-1 to 119-n.
To communicate via. The main signal output to the HWY bus 113 is relayed and transmitted by the HWYINT unit 108 to a transmission path.

In this upstream operation, the RF reception signals 121-1 and 122-1 to 12-1 of the second reception carrier are used.
1-6 and 122-6 are the RX units 117-1 to 117-
6. RL bus 118 and BB units 119-1 to 119-
n and the common RBC bus 111 and FL bus 1
12 are connected to the CHC units 107-1 to 107-n.

Therefore, CHC units 107-1 to 107-n
Is a resource common to both the uplink basin band signal of the radio channel of the first reception carrier and the uplink basin band signal of the radio channel of the second reception carrier.

In the downstream direction, the HWYI
The downlink main signal received via the NT unit 108 and the HWY bus 113 is converted into a downlink baseband signal by a channel coding process using the channel coding function of the CHC units 107-1 to 107-n.
2 is output.

Further, the first processing for the radio channel is performed.
And second receiving carrier receiving sections 105-1 and 105-2
, The transmission power information of the downlink radio channel is output to the FL bus 112.

The downlink baseband signal and transmission power information on FL bus 112 are stored in TX sections 106-1 to 106-1 of all sectors.
6-6, the T or T of one or a plurality of sectors accommodating the downlink radio channel is transmitted without discrimination of the transmission carrier.
X sections 106-1 to 106-6 are provided by a transmission modulation function.
Downlink baseband signals are converted to RF transmission signals 120-1 to 120-12.
0-6, and the transmission level is adjusted according to the transmission power information.
F transmission signals 120-1 to 120-6 are superimposed, and a plurality of carriers are multiplexed.
Transmit to 103-6.

The common AMP units 103-1 to 103-6
Commonly amplify the RF transmission signals 120-1 to 120-6,
Antennas 101-1 and 102-1 to 101-6 and 1
Radio waves are transmitted from 02-6.

As described above, base station apparatus 1 of the present embodiment
According to 00, the number of RX units 114-1 to 114-6 necessary for diversity reception of all sectors of one reception carrier is as follows:
Both RF reception signals 121-1 and 122-1 to 121- diversity-received for each sector of one reception carrier
6 and 122-6 are converted to digital reception signals, and the digital reception signals are concentrated on a single RL bus 115.
This concentrated digital received signal is transmitted by the number of B signals necessary to accommodate all uplink radio channels in one received carrier.
Output to the B sections 116-1 to 116-n.
-1 to 116-n, RAK based on synchronization processing and maximum ratio combining for uplink radio channels in the same reception carrier.
By performing E reception demodulation processing, an uplink baseband signal is generated for each uplink radio channel, and transmission power control processing is performed for each uplink radio channel to output downlink transmission power information.

As described above, the RX units 114-1 to 114-6 having the reception function and the A / D conversion function, the synchronization function,
B with RAKE reception demodulation function and transmission power control function
B units 116-1 to 116-n are connected to a single RL bus 11
5, the number of signals on the RL bus 115 connecting between the functions can be reduced, and a large number of digital signals can be wired in a bus format at high speed. Can be reduced.

Further, deinterleave processing, error detection and correction decoding are performed on uplink baseband signals output from BB units 116-1 to 116-n and 119-1 to 119-n provided for each reception carrier. After processing,
By performing channel decoding, a channel decoding function for restoring an uplink main signal, and a downlink main signal,
A plurality of CHC units 107-1 to 107-n having a channel coding function of performing error detection / correction coding, interleaving, and transmitting a symbol sequence after channel coding as a downlink baseband signal;
6-1 to 116-n and 119-1 to 119-n are provided with an RBC bus 111 and an FL bus 112 for connecting to arbitrary CHC units 107-1 to 107-n. Function units (processing resources) in which 1 to 107-n are commonly assigned to a plurality of reception carriers
By doing so, the use of resources can be made more efficient, and the device scale can be reduced.

[0079]

As described above, according to the present invention,
A device for wiring a large number of digital signals at high speed in a bus form by reducing the number of RL bus signals for broadcasting down baseband signals and transmission power information to mobile station devices to transmission means. Technology can be easily realized.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a base station apparatus according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a conventional base station apparatus.

[Explanation of symbols]

114-1 to 114-6, 117-1 to 117-6 R
X section 115, 118 RL bus 116-1 to 116-n, 119-1 to 119-n B
B section 107-1 to 107-n CHC section 111 RBC bus 112 FL bus

Claims (6)

[Claims] 1. Receiving means for converting a diversity-received signal into a digital reception signal by a number necessary for diversity reception of all sectors of one reception carrier, and
It is characterized in that a single bus means is used to connect as many baseband processing means as necessary to combine these digital reception signals at the maximum ratio and accommodate all uplink radio channels in one reception carrier. Base station device. 2. A receiving signal, which is diversity-received from a mobile station apparatus for each sector of one receiving carrier, is converted into a digital receiving signal, and a number of receiving means required for diversity receiving of all sectors of the one receiving carrier; By performing the maximum ratio combining of the digital reception signal from the receiving means,
It is necessary to generate an uplink baseband signal for each uplink radio channel from the mobile station apparatus, output downlink transmission power information for each uplink radio channel, and accommodate all uplink radio channels in the one reception carrier. A base station apparatus comprising: a number of baseband processing means; and a single first bus means for concentrating the digital reception signal and outputting the digital reception signal to the baseband processing means. 3. The baseband processing means performs a synchronization process and a RAKE reception demodulation process based on a maximum ratio combination on an uplink radio channel in the same reception carrier, so that the digital reception signal is provided for each uplink radio channel. The base station apparatus according to claim 2, wherein the base station apparatus generates an uplink baseband signal, performs transmission power control processing for each of the uplink radio channels, and outputs downlink transmission power information. 4. An uplink main signal is restored by performing de-interleaving processing, error detection and correction decoding processing on the uplink baseband signal output from the baseband processing means, and then performing channel decoding. A plurality of codec units having a channel decoding function and a channel coding function of performing error detection / correction coding and interleaving of a downlink main signal and transmitting a symbol sequence after channel coding as a downlink baseband signal; 4. The base station apparatus according to claim 2, further comprising: a second bus unit configured to connect the baseband processing unit provided in the communication unit to any of the codec units. 5. The base station apparatus according to claim 1, wherein a CDMA system or a W-CDMA system is applied. 6. A mobile communication system comprising the base station apparatus according to claim 1.