JP2003283402A - Feeder circuit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a feeder circuit for properly maintaining the characteristics of a feeder path of each element in a wireless station provided with an array antenna that attains desired directivity at a high speed with high accuracy and maintains high transmission quality. <P>SOLUTION: The feeder circuit is configured to include: a single or a plurality of feeder system selection means 11-1 to 11-N for selecting a feeder system having attribute suitable for both or either of an event and a state identified by a system including the array antenna 10 among a plurality of feeder systems having different attributes and applicable to feeder the array antenna 10; and a single or a plurality of feeder means 12-1 to 12-N for feeding power to a plurality of elements 10E-1 to 10E-n being components of the array antenna 10 on the basis of the feeder system selected by the single or plurality of the feeder system selection means 11-1 to 11-N. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply circuit for properly maintaining characteristics of a power supply path of individual elements forming the array antenna in a radio station provided with the array antenna.

[0002]

2. Description of the Related Art CDMA (Code Division Multiple Acce
The ss) method has inherent confidentiality and interference resistance, and can be flexibly applied to transmission of various transmission information, and thus is being actively applied to mobile communication systems. In addition, a radio base station of such a mobile communication system is based on a predetermined signal processing or adaptation algorithm for the purpose of effective use of limited radio frequencies and flexible adaptation to various zone configurations and channel configurations. Array antennas, in which individual elements are fed separately in parallel, are being installed.

FIG. 11 is a diagram showing a first configuration example of a receiving system of a radio base station to which CDMA is applied and an array antenna is mounted. In the figure, the feeding points of the elements 100-1 to 100-4 forming the array antenna are connected to the inputs of the receiving units 101-1 to 101-4, respectively. Receiver 1
The outputs of 01-1 to 101-4 are all multiple M receiving terminal stations 1
02-1 to 102-M are connected to corresponding inputs, and output signals 1 to M are obtained at the outputs of these receiving terminal stations 102-1 to 102-M, respectively.

The receiving terminal station 102-1 is composed of the following elements. A despreader 103-1 having four inputs individually connected to the outputs of the receivers 101-1 to 101-4, together with a first input of the despreader 103-1 of the receiver 101-1 This despreader 1 is connected to the output and the output is
03-1 is connected to the control input of the path detection unit 104-1 · Adaptive control unit 105-1 having four inputs individually connected to the four outputs of the despreading unit 103-1 · Such adaptive control Antenna weights W1 to W4 connected to four outputs of the despreading unit 103-1 together with the four inputs of the unit 105-1 and corresponding to the elements 100-1 to 100-4, respectively, are adapted to the adaptive control unit 105-1. A receive beamformer 106-1 whose output is connected to the first feedback input of this adaptive controller 105-1 and with the first feedback input of this adaptive controller 105-1;
The demodulation unit 1 having an input connected to the output of the reception beam forming unit 106-1 and arranged as the final stage of the reception terminal station unit 102
07-1. Selector 108-1 in which the output of demodulation section 107-1 is connected to one input and the other input is given a known signal indicating known information. Output of this selector 108-1 and demodulation section The multiplier 109-1 having two inputs connected to the channel estimation output of 107-1 and the output connected to the second feedback input of the adaptive control unit 105-1. Is composed of the following elements:

A channel estimator 110-1 whose input is connected to the output of the receive beamformer 106-1 and whose output is connected to the corresponding input of the multiplier 109, together with the input of this channel estimator 110-1 , The output of the reception beam forming unit 106-1 is connected to one input, and the output of the channel estimation unit 110-1 is connected to the other input. And the signal determination unit 112-1 arranged as the final stage of the demodulation unit 107-1 at the subsequent stage of the multiplier 111-1. The configuration is the same as that of the terminal unit 102-1. Therefore, hereinafter, components having the same function and configuration will be denoted by common reference numbers with subscripts "2" to "M", and description and illustration thereof will be omitted here. .

In the receiving system having such a configuration (hereinafter referred to as "adaptive array receiving method"), the receiving units 101-1 to 10-1 to 10-10 are provided.
1-4 performs heterodyne detection (homodyne detection) on the received waves that arrive in parallel with the elements 100-1 to 100-4, respectively, to thereby obtain first to fourth baseband signals respectively indicating these received waves. Output. Further, the receiving terminal stations 102-1 to 102-M are appropriately assigned to a prescribed control channel under a predetermined channel control or to individual calls (subscribers) that have occurred.

In the following, the receiving terminal stations 102-1 to 10-1
For items common to 02-M, subscript "1" ~
It is described using a code added with a subscript "c" which means that it can correspond to any of "M". Further, the despreading unit 103-c and the path detection unit 104-c are appropriately given a unique spreading code c indicating the radio channel c allocated under the channel control adapted to a predetermined channel arrangement and zone configuration. .

Further, the path detector 104-c is formed by the first baseband based on the steep cross-correlation between the spread code c and the above-mentioned first baseband signal. Detect path c. Despreader 103
-c is based on the spreading code c described above for the despreading processing of the first baseband signal or the fourth baseband signal described above while synchronizing with the time when such a path c is detected. In parallel, the first to fourth despread signals c are generated.

The reception beam forming unit 106-c receives these first to fourth despread signals c in the order of the time series i and the antenna weight W _c 1 given in advance by the adaptive control unit 105-c. ˜W _c 4 (hereinafter, a signal given as a sequence of such product sums is referred to as a “combined despread signal c”) y _c (i) to obtain the element 100-in the baseband region. Individual power supply of 1 to 100-4 is performed.

The channel estimator 110-c correlates with the known component to be included in the composite despread signal generated by the reception beam forming unit 106-c in this way, and Transmitting end and elements 100-1 to 1
Estimate the transmission characteristics of the wireless transmission path formed between 00-4 and 00-4. The multiplier 111-c multiplies the composite despread signal c by the conjugate complex number c of the complex number c exhibiting the transmission characteristic, thereby compensating for the distortion generated in the composite despread signal c in the above-mentioned wireless transmission path. In the following, regarding the signal generated by the multiplier 111-c in this way,
It is simply referred to as "demodulated signal c".

The signal judging section 112-c judges each signal point indicated by the demodulated signal c based on a known signal point arrangement, and outputs an output signal c indicating a sequence of these signal points. In addition, the selector 108-c outputs the above-mentioned output signal only at the time of start-up and the “pull-in period” from the time when some wireless channel is allocated to the receiving terminal station 102-c to the time when a predetermined condition is satisfied. The known signal is selected from among c and the known signal under the initiative of the adaptive control unit 105-c.

The multiplier 109 multiplies the reference signal r _c (i) by multiplying the “reference signal c” indicating the signals thus selected in the order of the time series i by the conjugate complex number c described above.
To generate. The adaptive control unit 105-c, in order of time series i,
An adaptive algorithm (LMS, RLS) that minimizes the root mean square value of the error signal e _c (i) given by the following equation with respect to the composite despread signal y _c (i) and the reference signal r _c (i) described above. , SMI
It may be any other. By updating the antenna weights W1 to W4 based on the above, the main lobe of the array antenna is formed and maintained in the direction of the transmission end (mobile station) of the received wave corresponding to the demodulated signal c.

E _c (i) = r _c (i) −y _c (i) Note that such an adaptive algorithm is realized not by the features of the present invention but by applying various prior arts. Therefore, the description thereof will be omitted here. Therefore, the elements 100-1 to 100-4 are set to the transmitting end of these receiving waves for any receiving waves arriving via the radio channels individually allocated to the receiving end local parts 102-1 to 102-M. It is also used as an array antenna that forms main lobes in parallel in the same direction.

FIG. 12 is a diagram showing a second configuration example of a receiving system of a radio base station to which CDMA is applied and an array antenna is mounted. In the receiving system shown in FIG. 12, the receiving terminal station 12 replaces the above-mentioned receiving terminal stations 102-1 to 102-M.
0-1 to 120-M are provided. The receiving terminal station section 120-1 does not include the selector 108-1 and the multiplier 109-1 described above, and includes an antenna weight selecting section 121-1 instead of the adaptive control section 105-1 and its antenna. The outputs of the despreading unit 103-1 and the reception beam forming unit 106-1 are not connected to the weight selecting unit 121-1. Further, the input is input together with the input of the signal determining unit 112-1 to the multiplier 11
1-1 is connected to the output of 1-1, and the output is connected to the input of the antenna weight selector 121-1.
Is provided.

The receiving terminal stations 120-2 to 120-M have the same configuration as the receiving terminal station 120-1, and therefore, those having the same function and configuration will be referred to as subscript "2" below. -"M" are assigned the same reference numerals provided in place of the subscript "1", and description and illustration thereof are omitted here. Further, in the following, the receiving terminal station 120
-For items common to 1 to 120-M, subscript "1"
~ It is described using a code with a subscript "c", which means that it can correspond to any of "M".

In the receiving system having such a configuration (hereinafter, referred to as "multi-beam receiving system"), the antenna weight selecting unit 121-c has a suitable antenna weight W1 to be given to the receiving beam forming unit 106-c. All combinations of W4 (determined based on the attributes, such as the direction, shape, size, position and the like of the wireless zone or sector to be formed by the elements 100-1 to 100-4) are given in advance.

Further, the antenna weight selecting section 121-c
Gives a prescribed combination of antenna weights to the reception beam forming section 106-c as antenna weights W1 to W4 at the time of starting. On the other hand, the SIR measurement unit 122-c sequentially determines, as an average value of errors in the signal space, a predetermined value for each signal point represented by the demodulated signal c generated by the multiplier 111-c as described above. Determine the SI ratio with frequency and accuracy.

The antenna weight selecting unit 121-1 has the antenna weight W which is given to the receiving beam forming unit 106-c in advance, unless the SI ratio thereof exceeds the specified lower limit value.
1 to W4 are sequentially changed to different values (corresponding to any of the antenna weights given in advance as described above). These antenna weights W1 to W4 are set to values where this SI ratio exceeds at least the lower limit value.

Therefore, according to the multi-beam receiving method, as long as the responsiveness of the SIR measuring section 122-c and the accuracy of the SI ratio measured by the SIR measuring section 122-c are sufficiently high, the arrival of the desired wave The main lobe is formed and maintained promptly and with high accuracy in the direction. Figure 1
FIG. 3 is a diagram showing a third configuration example of a reception system of a radio base station to which CDMA is applied and an array antenna is mounted.

In the receiving system shown in FIG. 13, receiving terminal stations 130-1 to 130-1 replace the above-described receiving terminal stations 102-1 to 102-M.
20-M is provided. The receiving terminal station section 130-1 includes an antenna weight calculating section 131-1 in place of the antenna weight selecting section 121-1 described above, and an SIR measuring section 122-1.
Is not provided, and an arrival direction estimating unit 132-1 connected to the four outputs of the despreading unit 103-1 and the input of the antenna weight calculating unit 131-1 is provided.

The receiving terminal stations 130-2 to 130-M have the same configuration as the receiving terminal station 130-1. Therefore, those having the same function and configuration will be referred to as subscript "2" below. -"M" are assigned the same reference numerals provided in place of the subscript "1", and description and illustration thereof are omitted here. Also, in the following, the receiving terminal unit 130
-For items common to -1 to 130-M, subscript "1"
~ It is described using a code with a subscript "c", which means that it can correspond to any of "M".

In the receiving system having such a configuration (hereinafter referred to as "beam steering receiving system"), the prior art disclosed in Japanese Patent Laid-Open No. 11-251964 is applied to the arrival direction estimating section 132-c. By doing so, the direction of the transmission end of the received wave represented by the first to fourth despread signals c generated by the despreading unit 103-c (hereinafter,
It is called "direction of arrival". ) Estimates the azimuth angle theta _c at a predetermined frequency indicating the.

The antenna weight calculator 131-c performs the arithmetic operation represented by the following equation with respect to such an azimuth angle θ _c to obtain the antenna weights W1 to W4.
Then, these antenna weights W1 to W4 are given to the reception beam forming unit 106-c. W1 = 1 W2 = exp (jπsinθ _c ) W3 = exp (j2πsinθ _c ) W4 = exp (j3πsinθ _c ) Therefore, according to the beam steering method, the antenna weight calculation unit 131 c and the arrival direction estimation unit 132
As long as the responsiveness of -c and the accuracy of the azimuth angle θ _c estimated by the arrival direction estimation unit 132-c are sufficiently high, the main lobe can be swiftly and highly accurately in the arrival direction of the desired wave. Are formed and maintained.

[0024]

By the way, in the above-mentioned adaptive array receiving system, it is generally possible to form a main lobe in the arrival direction of a desired wave and a null point in the arrival direction of an interference wave. In setting and updating the antenna weights W1 to W4 based on the algorithm, a huge amount of processing must be ensured because 1,000 to tens of thousands of symbols given as reception waves in advance are referred to. However, in the case where such a processing amount is regulated to such an extent that it can be realized, for example, even if “normalized LMS” is applied as an adaptive algorithm, the azimuth angle converges in the direction of the main lobe with high accuracy. It takes a few seconds.

Therefore, in the adaptive array reception system, the higher the speed of the mobile station, which is the transmission end of the desired wave, the higher the possibility that the actual transmission quality will significantly decrease. Also,
In the multi-beam reception method and the beam steering reception method described above, the null point described above is not formed, but the response time is generally a value that can realize the time required for measuring the SI ratio and estimating the arrival direction. As far as it can be, it is significantly faster than the adaptive array reception method, and is less than 10 milliseconds.

However, in recent years, in the field of mobile communication services, there has been a strong demand for flexible realization of various added values under the fierce competition among a plurality of carriers, and such demand is strongly demanded. It was difficult to achieve any of these alone. It is an object of the present invention to provide a power feeding circuit that achieves a desired directivity at high speed with high accuracy and maintains high transmission quality.

[0027]

FIG. 1 is a block diagram of the first principle of the present invention. In the invention according to claim 1, the single or a plurality of feeding method selecting means 11-1 to 11-N have different attributes, and among a plurality of feeding methods that can be applied to the feeding of the array antenna 10, The array antenna 10
Each of the power supply systems having the attributes suited to the state identified by the system including the is selected. The single or plural power feeding means 12-1 to 12-N perform parallel power feeding to the plurality of elements 10E-1 to 10E-n forming the array antenna 10 based on the power feeding method selected in this way. Do it.

That is, these elements 10E-1 to 10E
The power supply method applied to the -n power supply is maintained as a power supply method that is suitable for the above-mentioned state. Therefore, deterioration in transmission quality and service quality that may occur due to such a power supply system not conforming to the above-described state is highly accurate,
And stable avoidance.

FIG. 2 is a block diagram of the second principle of the present invention. In the invention according to claim 2, the single or a plurality of power feeding method selection means 11-1 to 11-N have different attributes,
In addition, among the plurality of power feeding methods that can be applied to the power feeding of the array antenna 10, the power feeding method having the attribute suitable for the state identified by the system including the array antenna 10 is individually selected. The plurality of power supply means 21-1 to 21-P are provided for each of these power supply methods by the maximum number that can be selected in parallel by the power supply method selection means 11-1 to 11-N, and the corresponding power supply method is provided. Based on the above, the plurality of elements 10E-1 to 10E-n forming the array antenna 10 are fed in parallel. The allocating means 22 assigns to the traffic whose state that is the cause is identified each time any of the power feeding methods is selected by the above-described power feeding method selecting means 11-1 to 11-N.
Among the plurality of power feeding means 21-1 to 21-P, the power feeding means that performs power feeding based on this power feeding method is assigned.

That is, the number of radio channels to be formed in parallel via the elements 10E-1 to 10E-n, or the radio to be secured in parallel via these elements 10E-1 to 10E-n. The average value of the channel capacity of the channels is large, and the power feeding means 21 to be mounted based on this average value.
-As long as the total number P of -1 to 21-P is properly set in advance, effective use of existing or standard power feeding means that individually adapts to the specified single power feeding method can be achieved, and expansion can be achieved. It is possible to secure flexibility related to the above and reduce the cost required for the expansion.

In the third aspect of the present invention, the single or plural power feeding method selecting means 11-1 to 11-N are wirelessly formed in parallel based on the multiple access method via the array antenna 10. A power supply system is selected that individually corresponds to a path and has an attribute suitable for the state identified in the process of processing related to these wireless transmission paths. The single or a plurality of power feeding means 12-1 to 12-N and 21-1 to 21-P have a plurality of elements 10E-1 to 10E in a base band region or an intermediate frequency region individually corresponding to the above-mentioned wireless transmission path. -n feed in parallel.

That is, even when many wireless transmission lines are to be formed in parallel based on the above-described multiple access system, the power supply to the elements 10E-1 to 10E-n is performed by these wireless transmission lines. Everything is done individually and in parallel. Therefore, these wireless transmission lines are formed at low cost and with high transmission quality by sharing the array antenna 10.

In the invention according to the fourth aspect, the single or plural feeding method selecting means 11-1 to 11-N are arranged so that, with respect to the individual received waves arriving at the array antenna 10, the azimuths arriving at the array antenna 10 are obtained. The larger the rate of change of the azimuth angle, the smaller the amount of processing required to set and update the characteristics of the power feeding paths of the plurality of elements 10E-1 to 10E-n among the plurality of power feeding methods described above. Select a method.

That is, in any period in which any power feeding method is applied, the brake is surely set for the increase in the processing amount required for setting or updating the antenna weight based on the power feeding method. . Therefore, compared to the case where no such pawl is set, there is a power supply method that matches the above-mentioned rate of change in azimuth, and as long as that power supply method can be applied, transmission quality is stable on any channel. And maintained well.

In the invention described in claim 5, the state is called channel control related to formation of wireless transmission lines via the array antenna 10 and communication control related to traffic to be transmitted via these wireless transmission lines. Identification based on all or part of the procedure with the process. That is, the power feeding method to be applied to the array antenna 10 is flexibly changed based on the procedure of all or part of the above-mentioned channel control, communication control and call processing.

Therefore, the flexibility of the structure of the wireless transmission system formed via the array antenna 10 and the improvement of the added value of the wireless transmission system is ensured. In the invention of the first subordinate concept of the invention described in claims 1 to 3,
Single or plural power supply system selection means 11-1 to 11-N
Selects in parallel the feed schemes that individually correspond to the fingers detected in the process of RAKE reception via the array antenna 10 and have the attributes adapted to the conditions identified in the process of the individual processes involving these fingers. It is configured as a set of sub-modules. The single or plural power feeding means 12-1 to 12-N and 21-1 to 21-P are based on the power feeding method individually selected by these sub-modules, and each of the above-mentioned fingers has a base band region or an intermediate frequency. In the frequency domain, a plurality of elements 10E-1 to 10E-n are fed in parallel.

That is, the elements 10E-1 to 10E-n include
Antenna weights individually corresponding to the fingers for which RAKE combining is performed are given in parallel, and the brake is reliably set for an increase in the amount of processing required for setting and updating these antenna weights. So, for example,
Like a mobile communication system with microcells,
Even in a wireless transmission system in which a received wave originally arrives via both the main lobe and the side lobe, the array antenna 10 is shared by a desired number of channels, and RAKE can be stably performed in parallel for any of the channels. Synthesis is performed.

In the invention of the second subordinate concept of the invention described in claims 1 to 3, the single or a plurality of feeding method selecting means 11-1 to 11-N are used for RAKE reception via the array antenna 10. A sub-module that corresponds to individual wireless transmission paths formed in parallel based on the above and selects in parallel a power supply method having attributes that match the states identified in the process of individual processing related to these wireless transmission paths. It is composed as a set of. Single or multiple power supply means 12-1 to 12
-N, 21-1 to 21-P perform parallel power feeding to the plurality of elements 10E-1 to 10E-n in the base band region or the intermediate frequency region individually corresponding to the above-mentioned wireless transmission path.

That is, the elements 10E-1 to 10E-n have R
Although the antenna weights individually corresponding to the wireless transmission lines that are the units of AKE combination are given in parallel, the brakes related to the increase in the amount of processing required for setting and updating these antenna weights are surely set. Therefore, as compared with the case where the processing related to the setting and updating of the antenna weight is performed in parallel for each finger, the overall processing amount can be reduced and / or the configuration can be simplified. , And the array antenna 10 is shared by a desired number of channels, and RAKE combining is stably performed in parallel for any of the channels.

In the first invention related to the invention described in claims 1 to 3, there are a plurality of elements 10E-1 to 10E-1 to
Included are specific power feed schemes in which the characteristics of the 10E-n feed line are set and updated based on an adaptive algorithm.
Single or plural power supply means 12-1 to 12-N, 21-1 to 2
All or part of 1-P is based on a power supply method other than the specific power supply method when power supply to the plurality of elements 10E-1 to 10E-n is started based on the specific power supply method. The characteristics that were set individually in advance in the power feeding path are applied as the initial conditions of the adaptive algorithm.

That is, when the power feeding method to which the adaptive algorithm is applied is applied instead of the power feeding method to which the adaptive algorithm is not applied, the element 10E is used even if the convergence speed inherent to the adaptive algorithm is long.
-1 to 10E-n, unless the accuracy of the characteristics set prior to the individual power supply lines of -1 to 10E-n is excessively low, the transmission quality is stably kept high.

Therefore, various adaptive algorithms can be applied regardless of the above-mentioned inherent convergence speed. In the second invention related to the invention described in claims 1 to 3, a single or a plurality of power supply means 12-1 to
12-N and 21-1 to 21-P are array antennas for both transmission and reception, based on the power feeding method individually selected by the single or plural power feeding method selecting means 11-1 to 11-N. 10 are shared, and the distance and direction of the transmission end and the reception end and the whole or a part of the band of the wireless transmission path formed between these transmission end and the reception end are individually matched. .

That is, the present invention is not limited to a simple receiving station, but may be a wireless station that both transmits and receives desired transmission information via a half-duplex or full-duplex radio transmission path. Can be applied. Therefore, even if the array antenna 10 has a plurality of wireless channels to be formed in parallel via the array antenna 10,
It is shared for all transmission and reception of these radio channels without complicating the configuration.

In the invention of the subordinate concept of the invention described in claim 4, a single or a plurality of power supply system selecting means 11-1 to 11-N.
Is the frequency of fading incidental to each received wave,
The azimuth angle is obtained as a conversion value of the ratio of the relative distance of the transmitting end to the array antenna 10. Such an azimuth is accurately and surely obtained without providing dedicated hardware.

Therefore, the surplus processing amount and other resources of the wireless station to which the present invention is applied are effectively used, and the transmission quality is stably maintained high. In the first invention related to the invention described in claim 4, the fading frequency and / or the relative distance described above are normalized as a ratio or a difference with respect to a prescribed standard value.

That is, with respect to all the radio channels to be formed in parallel, the above-described fading frequency and relative distance have the scale and form in which the power supply by the shared use of the array antenna 10 is achieved with desired accuracy and responsiveness. It is represented by. Therefore, it is possible to further reduce the amount of processing required to feed the array antenna 10.

In the second invention related to the invention described in claim 4, a single or a plurality of power feeding method selecting means 11-1 to 11-1.
1-N indicates the direction based on the result of positioning of the transmission end, which is performed by both the system equipped with the array antenna 10 and the transmission end of each received wave in cooperation with each other, or by one of them independently. Find the corner. Such an azimuth is based on the load distribution and / or the function distribution between the system and the transmission end described above, and based on a predetermined navigation applied to these systems or the transmission end. Desired.

Therefore, in the system provided with the array antenna 10 and the above-mentioned transmitting end, the above-mentioned azimuth angle is set to the desired azimuth angle without making the configuration complicated by effectively utilizing the existing resources. High accuracy is required. In the inventions related to the invention described in claims 1 to 4,
The single or plural power supply method selection means 11-1 to 11-N are
For each traffic that is the target of the processing in which the above-mentioned state is identified, the attributes of either or both of the transmitting end and the receiving end among the plurality of power feeding methods described above, the exchange method to be applied, and the communication Apply a power supply method that is compatible with all or part of the procedure.

That is, the power feeding method to be actually applied is not limited to the above-described state for each traffic described above, but all of the attributes of the transmitting end and the receiving end, the exchange method to be applied, and the communication procedure. Alternatively, a power supply method suitable for a part is appropriately set. Therefore, for any of the wireless channels, the array antenna 10 is fed in parallel based on the feeding system suitable for the traffic to be transmitted via the wireless channel.

[0050]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 3 is a diagram showing the first and fourth embodiments of the present invention. This embodiment includes receiving terminal stations 30-1 to 30-M instead of the receiving terminal stations 102-1 to 102-M shown in FIG. 11, and these receiving terminal stations 30-1 to 30-M are provided. A power supply control unit 31 connected to a specific input and output that are individually provided is provided. The receiving terminal unit 30-1 is configured as follows.

In the receiving terminal unit 102-1 shown in FIG. 11,
Antenna weight selector 121-1 and S shown in FIG.
An IR measuring unit 122-1 is added. The output of the antenna weight selection unit 121-1 and the output of the adaptive control unit 105-1 described above are connected to the corresponding input of the selector 32-1, and the selection input and output of the selector 32-1 , Respectively connected to the corresponding specific output of the power feeding control unit 31 and the corresponding input of the reception beam forming unit 106-1.

The output of the despreading unit 103-1 is connected to the corresponding input of the reception beam forming unit 106-1 and the adaptive control unit 105, as well as the corresponding input of the arrival direction estimation unit 33-1. The output of the arrival direction estimation unit 33-1 is the angular velocity estimation unit 3
It is connected to the corresponding specific input of the power feeding control unit 31 via 4-1.

The configuration of the receiving terminal stations 30-2 to 30-M is the same as that of the receiving terminal station 30-1. Therefore, in the following, common reference numerals with subscripts "2" to "M" are given to constituent elements having the same function and configuration, and the description and illustration thereof are omitted here. FIG. 4 is a diagram for explaining the operation of the first embodiment of the present invention.

Hereinafter, the present invention will be described with reference to FIGS. 3 and 4.
The operation of the first embodiment will be described. First, the receiving terminal unit 3
For items common to 0-1 to 30-M, subscript "1"
~ Subscript meaning that it can correspond to any of "M"
It is described using a code with "c" added. Direction of arrival
The determination unit 33-c is the same as the arrival direction estimation unit 132-c shown in FIG.
Similarly, the first not generated by the despreader 103-c
The transmitting end of the received wave indicated by the fourth despread signal c (see FIG.
Direction indicating the direction of (1)) (hereinafter referred to as "arrival direction")
Angle θ _cIs estimated at a predetermined frequency.

The angular velocity estimating section 34-c sequentially obtains the rate of change Δθ _c of the azimuth angle θ _c . The power feeding control unit 31 determines whether or not the rate of change Δθ _c exceeds a prescribed threshold value θth, and the selector 32 is set during the period when the result of the determination is false.
to the reception beam forming unit 106-c via the -c
Connect the output of 05-c. However, while the result of this determination is true, the power feeding control unit 31 connects the output of the antenna weight selection unit 121-c to the reception beam forming unit 106-c via the selector 32-c.

In the receiving terminal station 30-c, the selector 3
2-c, direction of arrival estimator 33-c and angular velocity estimator 34-c
The operation of all the elements other than the above is basically the same as the operation in the conventional example shown in FIGS. 11 and 12, and therefore the description thereof will be omitted below. That is, in the present embodiment, the power feeding of the elements 100-1 to 100-4 does not reach any of the radio base stations (array antennas configured of the elements 100-1 to 100-4) to which the present embodiment is applied. The reception wave is performed as follows according to the azimuth angle θ _c .

If the azimuth angle θ _c changes at a high speed such that the above-mentioned change rate Δθ _c exceeds the specified threshold value θ th due to the movement of the transmitting end of the corresponding received wave or other factors, the Beam reception system "is adopted. On the contrary, when the azimuth θ _c changes at a low speed to such an extent that the above-mentioned change rate Δθ _c becomes equal to or less than the specified threshold θ th,
The "adaptive array reception system" is adopted.

As described above, according to this embodiment, the element 10
The individual received waves arriving at 0-1 to 100-4 are received by the adaptive array reception method only during the period when the rate of change in the direction of arrival is small, and on the contrary, during the period when the rate of change is large, the adaptive array is received. Reception is performed based on the multi-beam reception method, which has a higher response than the reception method. Therefore, the transmission quality and the service quality are stably kept high, and flexible adaptation to the diversification of the transmission service provided through the individual channels becomes possible.

Further, the pawl related to the increase in the amount of processing required for setting and updating the antenna weights W1 to W4 is surely set, and these antenna weights W1 to W4 are set.
The adaptive array receiving method is preferentially applied to the setting and updating of the signal with a limited frequency, and at a proper frequency and accuracy based on at least the multi-beam receiving method.

In this embodiment, the arrival direction estimation unit 3
3-c obtains the azimuth angle θ _c by applying the prior art disclosed in the above-mentioned JP-A No. 11-251964. However, the present invention is not limited to such a configuration, and for example, as shown in FIG. 5, the fading frequency estimating unit 41-c and the angular velocity estimating unit 42-c described below respectively include the arrival estimating unit 33 described above. -c and the angular velocity estimation unit 34-c may be provided instead.

The frequency of fading associated with the received wave (hereinafter, referred to as the following, which is connected to the output of the channel estimation unit 110-c)
It is called "fading frequency". ) Of the received wave by converting the timing of the received wave and the fading frequency described above at the frequency at which the corresponding path is detected by the path detection section 104-c. The relative distance r and the speed v of the end are obtained, and the azimuth angle θ _{c described} above, which is expressed by the following formula, is applied to the relative distance r and the speed v.
When, the azimuth angle θ angular velocity estimating unit 42-c [Delta] [theta] determined the change rate [Delta] [theta] _c of _{c c} = v / r Further, in such an angular velocity estimation unit 42-c process of operations performed by the relative distance above r and velocity v are
It does not have to be calculated as an absolute value, for example,
These relative distances r and velocities v are evaluated as ratios and deviations from standard values respectively given, and the angular velocity that is the above-mentioned change rate Δθ _c is the result of these evaluations, as shown in FIG. May be obtained by appropriately referring to the angular velocity evaluation table 43-c in which all values that are uniquely determined are registered.

FIG. 7 is a diagram showing a second embodiment of the present invention. In this embodiment, the receiving terminal station unit 30-1 shown in FIG.
The receiving terminal stations 50-1 to 50-M are provided instead of 30 to 30-M. The receiving terminal unit 50-1 is configured as follows. A path detection unit 51-1 that is provided instead of the path detection unit 104-1 described above and that detects main individual fingers detected based on the delay profile of the received wave is provided.

Among the elements forming the receiving terminal station section 30-1 shown in FIG. 3, the path detecting section 104-1, the arrival direction estimating section 33-1, the angular velocity estimating section 34-1, and the signal determining section 11 described above are included.
Elements other than 2-1 (hereinafter, referred to as “specific elements”) are individually provided, and instead of these specific elements, the maximum number L that can be detected in parallel by the path detection unit 51-1 described above. Finger corresponding part 52-1 corresponding to each finger
1 to 52-1L are provided. Incidentally, the finger corresponding part 52-1
For the individual elements provided in 1 to 52-1L, for the sake of simplicity, the subscript corresponding to the corresponding finger corresponding part among the subscripts "1" to "L" is the second subscript for simplicity. The same reference numerals as those of the above-described specific elements are given except for the added points, and the description and illustration thereof will be omitted.

The despreading units 103-11 to 103-1L individually provided in the finger corresponding units 52-11 to 52-1L are individually connected to the corresponding outputs of the path detection unit 51-1 described above. It Only the output of the despreading unit 103-11 among the despreading units 103-11 to 103-1L described above is connected to the input of the arrival direction estimation unit 33-11.

The outputs of the multipliers 111-11 to 111-1L individually provided in the finger corresponding parts 52-11 to 52-1L are connected to the corresponding inputs of the adder 53-1 and the adder 53 thereof is connected.
The output of -1 is connected to the input of the signal determiner 112-1. The output of the signal determiner 112-1 is connected in parallel to one input of each of the selectors 108-11 to 108-1L individually provided in the finger corresponding units 52-11 to 52-1L.

The corresponding common output of the power feeding control unit 31 is connected to the selection inputs of the selectors 32-11 to 32-1L individually provided in the finger corresponding units 52-11 to 52-1L. The configurations of the receiving terminal stations 50-2 to 50-M are the same as the configurations of the receiving terminal station 50-1. Therefore, in the following, common reference numerals with subscripts "2" to "M" are given to constituent elements having the same function and configuration, and the description and illustration thereof are omitted here.

The operation of the second embodiment of the present invention will be described below with reference to FIG. First, the receiving terminal stations 50-1 to 50
-For items common to M, subscript "1" is shown below.
~ It is described using a code with a subscript "c", which means that it can correspond to any of "M". In the receiving terminal unit 50-c, the despreading units 103-c1 to 103-cL despread the received waves based on the despread signals individually synchronized with the fingers (paths) detected by the path detection unit 51-c. The despread signal is generated in parallel by performing the spreading process.

These despread signals are received beam forming sections 106-c1 to 106-cL and channel estimating sections 110-c1 to 110-1.
10-cL and multipliers 111-c1 to 111-cL are given to the adder 53-c, and further, after being added by the adder 53-c, the signal determination unit 112-c performs signal determination. Be the target. Therefore, the elements 100-1 to 100-4
The received wave arriving at is received based on the RAKE receiving method, and high transmission quality is secured even when multipath is formed in the propagation path of the received wave.

On the other hand, the arrival direction estimation unit 33-c determines the azimuth angle θ _{c described} above based on the despread signal generated by the despreading unit 103-c1 provided only in the finger corresponding unit 52-c1. Estimate at a predetermined frequency. Also, the angular velocity estimation unit 34-
c sequentially obtains the change rate [Delta] [theta] _c of the azimuth angle theta _c. Further, the power feeding control unit 31 determines whether or not the rate of change Δθ _c exceeds a specified threshold θth, and during a period when the result of the determination is false, the selector 32-c1 to 32-cL are used. Then, the outputs of the adaptive control units 105-c1 to 105-cL are connected to the reception beam forming units 106-c1 to 106-cL, respectively. However, during the period when the result of this determination is true, the power feeding control unit 3
1 connects the outputs of the antenna weight selecting units 121-c1 to 111-cL to the receiving beam forming units 106-c1 to 106-cL via the selectors 32-c1 to 32-cL, respectively.

Therefore, according to this embodiment, the device 1
00-1 to 100-4 are provided with the antenna weights W1 to W4 individually corresponding to the respective fingers in parallel, and a brake for increasing the amount of processing required for setting and updating these antenna weights W1 to W4 is provided. It is definitely set. Therefore, even when the received wave arrives not only through the main lobe but also through the side lobe as in a mobile communication system in which microcells are formed, a plurality of receiving terminal stations 50-1 to 50- are provided. RAKE combining is stably performed via the elements 100-1 to 100-4 shared by M.

FIG. 8 is a diagram showing a third embodiment of the present invention. In this embodiment, the receiving terminal station 50-1 shown in FIG.
.. 50-M are provided with receiving terminal stations 60-1 to 60-M. The receiving terminal unit 60-1 is configured as follows. -Finger corresponding units 61-11 to 61-1L are provided in place of the finger corresponding units 52-11 to 52-1L shown in FIG. 7, and the selector 108-1, adaptive control unit 105-1 and antenna shown in FIG. A weight selection unit 121-1 and a selector 32-1 are provided.

The adder 53-1 and the signal determiner 112-1 shown in FIG. 7 are arranged at the subsequent stage of the finger corresponding units 61-11 to 61-1L. The SIR measuring unit 122-1 shown in FIG. 3 is provided, and the output of the adder 53-1 is connected to the input of the SIR measuring unit 122-1. The multiplier 109-1 shown in FIG. 7 is not provided, and the output of the selector 108-1 is connected to the corresponding input of the adaptive control unit 105 without passing through the multiplier 109-1.

4 fingers corresponding parts 61-11 to 61-1L
An adder 63-1 having 4L inputs connected to monitor terminals each of which is individually provided and having four outputs individually connected to corresponding four inputs of the adaptive control unit 105-1
Is provided. The finger corresponding part 61-11 is configured as follows. Despreading section 103-11, reception beam forming section 106-11, channel estimation section 110-11 and multiplier 1 shown in FIG.
11-11, and the signal determination unit 112 shown in FIG.
-11 is not available.

The output of the despreader 103-11 is connected to the corresponding input of the receive beam forming unit 106-11 and the corresponding input of the multiplier 64-11. Channel estimator 1 for specific input of multiplier 64-11
The output of 10-11 is connected, and the output of the multiplier 64-11 is connected to the corresponding input of the adder 63-1 described above.

The output of the selector 32-1 is commonly connected to the antenna weight inputs of the finger corresponding parts 61-11 to 61-1L. The configuration of the receiving terminal stations 60-2 to 60-M is the same as the configuration of the receiving terminal station 60-1. Therefore, in the following, common reference numerals with subscripts "2" to "M" are given to constituent elements having the same function and configuration, and the description and illustration thereof are omitted here.

The operation of the third embodiment of the present invention will be described below with reference to FIG. First, the receiving terminal stations 60-1 to 60
-For items common to M, subscript "1" is shown below.
~ It is described using a code with a subscript "c", which means that it can correspond to any of "M". Finger corresponding parts 61-c1 to 61-cL provided in the receiving terminal part 60-c
By linking with the adder 53-c and the signal determination unit 112-c, based on a procedure basically similar to the finger corresponding units 52c1 to 52-cL provided in the second embodiment described above. , RAKE reception.

On the other hand, the SIR measuring section 122-c has the same output signal c obtained by the finger corresponding sections 61-c1 to 61-CL and the adder 53c as in the first embodiment. By performing the processing, the SI ratio of the output signal c is obtained. Further, the output signal c or the known signal selected by the selector 108-c is the adaptive control unit 105.
given directly to -c.

However, the antenna weight obtained by the adaptive control unit 105-c and the antenna weight selection unit 121-c is not individually obtained for each corresponding finger in the finger corresponding units 61-c1 to 61-CL. It can be calculated accurately under the following conditions (1) and (2). (1) The despread signals output by the despreaders 103-c1 to 103-CL are added to the multipliers 64-c1 to 64-CL and the adder 63-c.
By linking with the channel estimator 110-c1
To 110-CL are individually given to the adaptive control unit 105-c as a sum of products with a conjugate complex number.

(2) Furthermore, such an adaptive control unit 105
The calculation by which -c calculates the antenna weight based on the adaptive algorithm can be regarded as a linear calculation as long as the rounding error and the truncation error that can occur in the process of the calculation are small enough to be allowed. That is, the SIR measuring unit 122-c, the selector 108-c, the adaptive control unit 105-c, the antenna weight selecting unit 121-c, and the selector 32-c are shared by the finger corresponding units 61-c1 to 61-CL. Antenna weights are given to the reception beam forming units 106-c1 to 106-CL provided in the finger corresponding units 61-c1 to 61-CL with high accuracy.

Therefore, in this embodiment, the configuration is simplified as compared with the second embodiment described above, but the amount of processing required for setting and updating the antenna weight is reduced, and RAKE reception is performed accurately. Is done. Hereinafter, the fourth embodiment of the present invention will be described. In this embodiment, as shown by the dotted line in FIG. 3, the output of the antenna weight selection unit 121-c is connected to the initial value input of the adaptive control unit 105-c, and the output of the power feeding control unit 31 is the selector 32-c. Is connected to the activation input of the adaptive control unit 105-c.

The operation of the fourth embodiment of the present invention will be described below with reference to FIG. In the present embodiment, the operation of each unit other than the adaptive control unit 105-c is the same as the operation in the above-described first embodiment, so here,
The description is omitted. The adaptive control unit 105-c monitors the logical value of the selection signal given to the selector 32-c by the power feeding control unit 31, and the adaptive control unit 105-c replaces the antenna weight selection unit 121-c. 106-c
Identify the period for which the antenna weight should be given to.

At the starting point of such a period, the adaptive control unit 1
05-c is obtained by taking in the antenna weight previously given to the reception beam forming unit 106-c by the antenna weight selecting unit 121-c and performing a predetermined calculation on the antenna weight or this antenna weight. The antenna weight is updated based on a predetermined adaptive algorithm by applying the value obtained as an initial value.

That is, when the receiving process based on the receiving method other than the adaptive array receiving method is continued based on the adaptive array receiving method, the convergence speed specific to the adaptive algorithm to be applied to this adaptive array receiving method. Even if is long, the transmission quality is maintained stable and high unless the accuracy of the antenna weight given to the reception beam forming unit 106-c in advance is excessively reduced.

FIG. 9 is a diagram showing a fifth embodiment of the present invention. This embodiment is configured as follows. The power supply ends of the elements 100-1 to 100-4 are connected to the first openings of the circulators 80-1 to 80-4, respectively, and the second openings of these circulators 80-1 to 80-4 are the receiving portions. Receiving terminal station 81 via 101-1 to 101-4
-1 to 81-M inputs are connected. Regarding the configuration of the receiving terminal stations 81-1 to 81-M, for the sake of simplicity, here, the receiving terminal stations 30-1 to 30- included in the above-described first to fourth embodiments are provided. M, 50-1 to 50-M, 60-1 to
Assume that it is the same as any of the configurations of 60-M.

The transmission terminal stations 82-1 to 82-M which are connected in cascade and which perform reversible processing in cooperation with the processing performed inside the reception terminal stations 81-1 to 81-M described above. And a multiplexer 83. The transmitters 84-1 to 84-4 connected to the four outputs of the multiplexer 83 are provided, and the outputs of these transmitters 84-1 to 84-4 are circulators 80-1 to 8-8.
They are connected to the third openings 0-4, respectively.

A power supply control unit 85 is provided instead of the power supply control unit 31 shown in FIG. 3, and the M specific output ports included in the power supply control unit 85 are each the transmission terminal station unit 82-1.
Connected to corresponding control inputs of ~ 82-M. In the inside of the transmitting terminal stations 82-1 to 82-M, based on the antenna weights individually given by the power feeding control section 85, like the receiving terminal stations 81-1 to 81-M, elements in the baseband region are provided. Transmission beam forming units 86-1 to 86-M are provided that perform power feeding of 100-1 to 100-4 in parallel.

The operation of the fifth embodiment of the present invention will be described below with reference to FIG. The feed controller 85 updates the above-described transmission beam formation each time the antenna weight (hereinafter, referred to as “reception weight” in the following modes (a) to (c)) given to the reception terminal station 81-c is updated. Antenna weights (hereinafter referred to as "transmission weights") are given to the unit 86-c in parallel.

(A) A CDM in a half-duplex wireless transmission line or a common frequency band between the reception end and the transmission end of the reception wave.
When a full-duplex wireless transmission line (including a case where the TDD method is applied) based on the A method is to be formed,
A transmission weight equal to the above reception weight is given. (b) A full-duplex or half-duplex wireless transmission line consisting of an upstream link and a downstream link that are individually formed in different radio frequency bands is formed between the transmitting end of the received wave and If so, a correction adapted to these radio frequency band differences is applied to the receive weights to provide the generated transmit weights.

(C) When the positions of the transmission end and the reception end are different, the transmission weights described above in (a) and (b) above
A transmission weight generated by applying a correction adapted to the azimuth difference between the transmitting end and the receiving end to the elements 100-1 to 100-4 is given. Therefore, according to the present embodiment, the present invention is not limited to a mere receiving station, but a wireless station that performs transmission and reception of desired transmission information via the above-described half-duplex or full-duplex wireless transmission path. Also applies to

FIG. 10 is a diagram showing a sixth embodiment of the present invention. The present embodiment is composed of the following elements. -Elements 100-1 to 1 constituting the above-described array antenna
00-4 ・ Reception units 101-1 to 101-4 individually connected to the feeding points of these elements 100-1 to 100-4 ・ Connected in parallel to all outputs of the reception units 101-1 to 101-4 And a plurality of P receiving terminal stations 91-1 to 91-P to which only the adaptive array receiving method is individually applied and a plurality Q receiving terminal stations 9 to which only the multi-beam receiving method is individually applied.
2-1 to 92-Q, and these receiving terminal stations 91-1 to 91-P,
92-1 to 92-Q path detectors 93-1 to 93-k individually corresponding to all channels that can be assigned to 92-1 to 92-Q. Individually connected to outputs of these path detectors 93-1 to 93-k Input and the above-mentioned receiving terminal stations 91-1 to 91-
The operation of the sixth embodiment of the present invention will now be described with reference to FIG. 10, which is a control unit 94 having outputs which are individually connected to all control inputs of P, 92-1 to 92-Q.

The path detectors 93-1 to 93-k are the elements 100
-1 to 100-4 and the receiving units 101-1 to 101-4
A received wave given via the above is taken in, and for all the channels described above, individual paths corresponding to both the arrival direction to these elements 100-1 to 100-4 and the time axis are detected in parallel. . The control unit 94 centrally manages the above-mentioned receiving terminal stations 91-1 to 91-P and 92-1 to 92-Q as resources, and these receiving terminal stations 91-1 to 91-P, 9 are managed.
Among 2-1 to 92-Q, the receiving terminal station which is not assigned to any call or traffic is always grasped.

Further, the control section 94 has the path detector 93-1.
~ 93-k when a new path is detected,
Perform the following processing. (A) “The azimuth angle of the relevant path (arrival direction of the received wave) θ” that is repeatedly detected by the relevant path detector,
The phase (given as a value on the time axis described above) and φ are acquired over a predetermined period.

(B) The change rate Δθ of the acquired azimuth angle θ and the average value Φ of the phase φ are calculated. (C) It is determined whether or not the rate of change Δθ exceeds a specified threshold value, and if the result of the determination is false, the receiving terminal station unit 91-1 to which only the adaptive array reception method is applied is
Of the 91-P, a vacant receiving terminal station (hereinafter, referred to as “supplementary receiving terminal station”) is supplemented based on the above-described resource management procedure.

(D) On the contrary, when the result of the above-mentioned discrimination is true, the supplementary receiving end station among the receiving end stations 92-1 to 92-Q to which only the multi-beam receiving system is applied is described above. Supplement based on the resource management procedure. When the supplementary receiving terminal unit is determined, the control unit 94 selects the receiving method (hereinafter referred to as “applying receiving system”) that is applied to the supplementary receiving terminal unit from the adaptive array receiving method and the multi-beam receiving method. ) Is confirmed, and the parameters listed below are given to the supplementary reception end station, and this reception end station is assigned to the corresponding path (channel).

Corresponding to the corresponding path (channel),
And the main lobe of the array antenna composed of these elements 100-1 to 100-4, which individually correspond to the despreading code / elements 100-1 to 100-4 of the phase uniquely determined according to the above-mentioned average value Φ. Are antenna weights W1 to W4 formed in the "direction of the azimuth angle θ obtained in the above-mentioned period" (only when the applicable receiving method is the applicable array receiving method.) The latest value of θ (provided that the applicable receiving method is the multi-beam receiving method.) On the other hand, in the supplementary receiving terminal station corresponding to any of the receiving terminal stations 91-1 to 91-P, the above-mentioned reverse By performing the despreading process based on the spreading code and applying the above antenna weights W1 to W4 as the initial values of the antenna weights to be multiplied by the four despread signals obtained as a result, The antenna weights are sequentially updated based on a predetermined adaptive algorithm.

Further, in the supplementary receiving terminal station corresponding to any of the receiving terminal stations 92-1 to 92-Q, the above-mentioned despreading processing is similarly performed, and the four despread signals obtained as a result are multiplied. As for the antenna weight to be provided, the antenna weight w1 in which the main lobe described above is formed in the direction indicated by the azimuth closest to the "latest value of azimuth θ" described above.
~ W4 is specified and applied.

Further, the control section 94 performs the following processing for any path (channel) to which any supplementary reception terminal station section is allocated as described above. As long as the corresponding path (channel) does not disappear, the azimuth angle θ and the phase φ repeatedly detected by the corresponding path detector are monitored, and the change rate Δθ of the azimuth angle θ exceeds the above-mentioned threshold value. Whether or not it is present is repeated at a predetermined frequency.

For each individual path (channel), the time at which the result of such discrimination is reversed is monitored, and each time such a time is detected, the processing (C) and (D) described above is performed. One of them is appropriately performed corresponding to the detected reversal result. That is,
For any of the received waves arriving at the elements 100-1 to 100-4 via any of the wireless channels, only one of the adaptive array receiving method and the multi-beam receiving method is used depending on the rate of change of the arrival angle of the received wave. In addition to appropriately allocating a receiving terminal local portion adapted to, the increase in the amount of processing required for maintaining the proper directivity of the antenna system is set to a stop, and the demodulation is performed accurately and stably.

Therefore, according to the present embodiment, the device 1
The number of radio channels to be formed in parallel via 00-1 to 100-4, or these elements 100-1 to 100
-4 has a large average value of the channel capacities of the wireless channels to be secured in parallel, and the receiving terminal stations 91-1 to 91-P, 92-1 to be mounted based on such an average value.
As long as the numbers P and Q of 92-Q are properly given in advance, the existing or standard receiving terminal unit that can be adapted to only one of the adaptive array receiving method and the multi-beam receiving method is effectively used. In addition, it is possible to improve the flexibility related to the expansion and reduce the cost required for the expansion.

In each of the above-mentioned embodiments, each receiving terminal station section (transmitting terminal station section) is adapted to the adaptive array reception method and / or the multi-beam reception method. However, according to the present invention, for example, among three or more reception methods (the “adaptive array reception method” does not necessarily have to be included) in which the amount of processing required for beam formation and maintenance and other attributes are different, each of them is different. If the application and switching of a receiving method having an attribute that matches the rate of change of the direction of arrival of a received wave that has arrived via a channel can be achieved with high accuracy and efficiency, an adaptive null steering array antenna and a time modulation array are provided. Any combination of receiving methods to which an antenna, a switching array antenna, a nonlinear processing array antenna, a synthetic aperture array antenna, etc. are applied (the above-mentioned "beam steering receiving method").
May be included. ) Is also applicable.

Further, in each of the above-mentioned embodiments, the present invention is applied to the radio base station of the mobile communication system to which the CDMA system is applied. However, the present invention provides the device 10
As long as an appropriate beam is formed and maintained in parallel for each channel through 0-1 to 100-4, regardless of such multiple access schemes and various mobile communication systems. It is applicable to wireless stations.

Further, in each of the above-mentioned embodiments, the azimuth angle θ described above is obtained based on AOA (Angle of arrival), or "the speed of the transmitting end given as the converted value of the frequency of fading associated with the received wave. Is calculated as a ratio of “the length of the propagation path formed between the transmitting end” and “. However, such an azimuth angle θ is obtained under load distribution or function distribution according to any form of the transmission end and the reception end, or a predetermined azimuth θ applied to either the transmission end or the reception end. It may be requested autonomously under navigation (not only radio navigation but also autonomous navigation or any other navigation).

Further, in each of the embodiments described above, the present invention is applied only to the receiving system or to both the receiving system and the transmitting system. However, the present invention is not limited to such a configuration and may be applied only to the transmission system. Furthermore, in each of the above-described embodiments, both the criterion and the trigger for the selection of the receiving method to be applied are given based only on the magnitude relationship between the change rate Δθ of the azimuth angle θ and the specified threshold value. There is.

However, the criteria and triggers for selecting these reception methods are not limited to the magnitude relations described above, and may be flexibly given based on all or part of the following. -Attributes of both or one of the transmitting end and the receiving end-Switching method that should be applied to the traffic that should be transmitted through individual channels (for example, if the circuit switching method, adaptive array receiving method Applied, and if it is a packet-switched method, a multi-beam reception method may be applied.)-All or part of the service class, quality of service and transmission quality that should be guaranteed for individual traffic (for example, high transmission) The adaptive array reception method may be applied only when quality is required.) ・ Based on all or part of the communication procedure, channel control, communication control (call setup) applied to individual traffic Even if it includes events (congestion, failure, etc.) and status (traffic distribution, the number of terminals in the wireless zone) Further, the present invention is not limited to the above-described embodiments, and embodiments in various forms are possible within the scope of the present invention, and any or all of the individual elements may be improved. May be given.

The techniques described in each of the above-described embodiments will be listed hierarchically and multilaterally and listed as supplementary notes. (Supplementary Note 1) Array antenna 1 having different attributes
A single or a plurality of power supply system selection means 11-1 to select a power supply system having an attribute suitable for the state identified by the system including the array antenna 10 among a plurality of power supply systems applicable to 0 power supply. 11-N and a plurality of elements 10E-1 to 10E-n constituting the array antenna 10 based on the power feeding method selected by the single or a plurality of power feeding method selecting means 11-1 to 11-N. A power supply circuit comprising a single or a plurality of power supply means 12-1 to 12-N for performing.

(Supplementary Note 2) Among a plurality of power feeding methods having different attributes and applicable to the power feeding of the array antenna 10, a power feeding method having an attribute suitable for a state identified by a system including the array antenna 10 Or a plurality of power supply method selection means 11-1 to 11-N for selecting a plurality of power supply methods and the plurality of power supply method selection means 11-1 to 11-N in parallel for each of the plurality of power supply methods. A plurality of elements 10 that constitute the array antenna 10 are provided for each of the maximum number that can be selected and are based on the corresponding feeding method.
A plurality of power supply means 21-1 to 2 for supplying power from E-1 to 10E-n
1-P and the single or plural power feeding method selection means 11-1
Every time a power supply method is selected by ~ 11-N,
The traffic having the state that is the cause thereof is provided with an allocating means 22 for allocating the power feeding means for performing the power feeding based on this power feeding method among the plurality of power feeding means 21-1 to 21-P. Characteristic power supply circuit.

(Supplementary Note 3) In the power supply circuit according to Supplementary Note 1 or Supplementary Note 2, the single or a plurality of supply scheme selecting means 11-1 to 11-N are based on the multiple access scheme via the array antenna 10. Select the power feeding method that individually corresponds to the wireless transmission lines formed in parallel and has the attribute suitable for the state identified in the process of processing related to these wireless transmission lines, and select the single or multiple power feeding. Means 12-1 ~
12-N and 21-1 to 21-P supply power to the plurality of elements 10E-1 to 10E-n in a base band region or an intermediate frequency region individually corresponding to the wireless transmission path. Power supply circuit.

(Supplementary Note 4) In the power supply circuit according to any one of Supplementary Notes 1 to 3, the single or plural power supply system selecting means 11-1 to 11-N are RAKE via the array antenna 10. Configured as a set of sub-modules that correspond in parallel to the fingers detected in the process of reception and select in parallel a power supply scheme with attributes that match the conditions identified in the process of individual processing involving these fingers. , The single or plural power supply means 12-1 to 12-1
The 2-N and 21-1 to 21-P are the plurality of elements 10E-1 to 10E- in the baseband region or the intermediate frequency region for each finger, based on the feeding method individually selected by the sub-module. A power supply circuit characterized by performing n power supply in parallel.

(Supplementary Note 5) In the power supply circuit according to any one of Supplementary Notes 1 to 3, the single or a plurality of power supply system selecting means 11-1 to 11-N may be RAKE via the array antenna 10. Corresponding to the individual wireless transmission lines that are formed in parallel based on the reception, select in parallel a power supply method that has attributes that match the states identified in the course of the individual processing related to these wireless transmission lines. The power feeding means 12-1 to 12-N and 21-1 to 21-P are configured as a set of sub-modules, and each of the power feeding means 12-1 to 12-N and 21-1 to 21-P has a base band area or an intermediate frequency area corresponding to the wireless transmission path. A power supply circuit characterized in that power is supplied to the plurality of elements 10E-1 to 10E-n in parallel.

(Supplementary Note 6) In the feeder circuit according to any one of Supplementary Notes 1 to 5, the array antenna 1
The plurality of power feeding methods that can be applied to the zero power feeding include a specific power feeding method in which the characteristics of the power feeding paths of the plurality of elements 10E-1 to 10E-n are set and updated based on an adaptive algorithm. , The single or plural power feeding means 12-1 to
All or a part of 12-N and 21-1 to 21-P are based on the specific power feeding method and the plurality of elements 10E-1 to 10E.
-When the power feeding of n is started, the characteristics set individually in advance in the power feeding path based on a power feeding method other than the specific power feeding method are applied as an initial condition of the adaptive algorithm. And a power supply circuit.

(Supplementary Note 7) In the power supply circuit according to any one of Supplementary Notes 1 to 6, the single or plural power supply means 12-1 to 12-N and 21-1 to 21-P are The array antenna 10 is shared for both transmission and reception based on the power supply system individually selected by the single or plural power supply system selection means 11-1 to 11-N, and the transmission end and the reception end are shared. The power supply circuit is characterized by individually matching all or part of the distance and direction of the radio wave and the band of the wireless transmission path formed between the transmission end and the reception end.

(Supplementary Note 8) In the power supply circuit according to any one of Supplementary Notes 1 to 7, the single or plural supply scheme selecting means 11-1 to 11-N arrive at the array antenna 10. For each received wave, the azimuth angle arriving at the array antenna 10 is obtained, and the higher the rate of change of the azimuth angle, the higher the rate of change of the azimuth angle, the more the power feeding paths of the plurality of elements 10E-1 to 10E-n among the plurality of power feeding methods. A power supply circuit that selects a power supply method that requires a small amount of processing for setting and updating the characteristics.

(Supplementary Note 9) In the power supply circuit according to Supplementary Note 8, the single or a plurality of power supply system selecting means 11-1 to 11-.
11-N is a power supply circuit characterized in that the azimuth angle is obtained as a conversion value of a ratio of a fading frequency incidental to each of the received waves and a relative distance of a transmission end to the array antenna 10.

(Supplementary Note 10) In the power supply circuit according to supplementary note 9, the fading frequency and / or the relative distance are normalized as a ratio or difference with respect to a prescribed standard value. A power supply circuit. (Supplementary Note 11) In the power supply circuit according to Supplementary Note 10, the single or a plurality of power supply method selection means 11-1 to 11-N.
Is carried out in cooperation with both the system provided with the array antenna 10 and the transmission ends of the individual received waves, or based on the result of positioning of the transmission ends performed by either one independently, A power supply circuit characterized by finding a corner.

(Supplementary Note 12) In the power supply circuit according to any one of Supplementary Notes 1 to 11, the single or plural power supply system selecting means 11-1 to 11-N perform the processing in which the state is identified. For each traffic that is the target of the above, among the plurality of power supply methods, the attributes of the transmitting end and / or the receiving end, and the switching method and the communication procedure to be applied are all or partly met. A power feeding circuit characterized by applying a power feeding method.

(Supplementary Note 13) In the power feeding circuit according to any one of Supplementary Notes 1 to 12, the states include channel control relating to formation of a wireless transmission path through the array antenna 10 and the wireless transmission paths of these channels. A power supply circuit characterized by being identified based on all or a part of procedures of communication control and call processing relating to traffic to be transmitted via a network.

[0117]

As described above, according to the first aspect of the present invention, the deterioration of the transmission quality and the service quality due to the improper power feeding method applied is reliably and stably avoided. Further, in the invention described in claim 2, the existing or standard power supply means individually adapted only to the prescribed single power supply system can be effectively utilized, and the flexibility regarding the expansion can be ensured. The cost required for the expansion can be reduced.

Further, in the invention according to claim 3, since the array antenna is shared based on the multiple access method, a plurality of wireless transmission lines can be formed inexpensively and with high transmission quality. Further, in the invention according to claim 4, it is possible to prevent an increase in the amount of processing required to set or update the antenna weight based on the power feeding method during the period in which any power feeding method is applied. The transmission quality is maintained stable and excellent as compared with the case where no setting is made.

Further, in the invention described in claim 5, the flexibility of the structure of the wireless transmission system formed via the array antenna and the improvement of the added value of the wireless transmission system is ensured. Further, in the invention of the first subordinate concept of the invention described in claims 1 to 3, the received wave originally has both the main lobe and the side lobe, as in a mobile communication system in which microcells are formed. Even in a wireless transmission system that arrives via an array antenna, the array antenna is shared by a desired number of channels, and stable R is achieved in parallel for any of the channels.
AKE synthesis is performed.

Furthermore, in the invention of the second subordinate concept of the invention described in claims 1 to 3, compared with the case where the processing related to the setting and updating of the antenna weight is performed in parallel for each finger. And / or simplification of the processing amount, and the array antenna is shared by a desired number of channels, and
RAKE combining is stably performed in parallel for any of the channels.

Further, in the first invention related to the inventions described in claims 1 to 3, various adaptive algorithms can be applied regardless of the inherent convergence speed. Further, in the second invention related to the invention described in claims 1 to 3, the array antenna has a plurality of wireless channels to be formed in parallel via the array antenna, It is shared for all transmission and reception of these radio channels without complicating the configuration.

Further, in the invention of the subordinate concept of the invention described in claim 4, the surplus processing amount and other resources of the wireless station to which the invention is applied are effectively used, and the transmission quality is stably maintained high. To be done. Furthermore, in the first invention related to the invention described in claim 4, it is possible to further reduce the processing amount required for feeding the array antenna.

In the second invention related to the invention described in claim 4, in the system provided with the array antenna 10 and the above-mentioned transmitting end, the azimuth is that the existing resources are effectively utilized. By doing so, it is possible to obtain the desired accuracy with high accuracy without complicating the configuration. Further, in the invention related to the invention described in any one of claims 1 to 4, the power feeding of the array antenna based on the power feeding method is adapted to the traffic to be transmitted through the wireless channel for any wireless channel. Are done in parallel.

Therefore, in the wireless transmission system to which these inventions are applied, flexibility is ensured for all of the various configurations of the wireless transmission system, the form of services to be provided, and the maintenance and operation procedures. In addition, the overall reliability and price / performance ratio are improved.

[Brief description of drawings]

FIG. 1 is a first principle block diagram of the present invention.

FIG. 2 is a second principle block diagram of the present invention.

FIG. 3 is a diagram showing first and fourth embodiments of the present invention.

FIG. 4 is a diagram explaining an operation of the first embodiment of the present invention.

FIG. 5 is a diagram showing another configuration of the first embodiment of the present invention.

FIG. 6 is a diagram showing a configuration of an angular velocity evaluation table.

FIG. 7 is a diagram showing a second embodiment of the present invention.

FIG. 8 is a diagram showing a third embodiment of the present invention.

FIG. 9 is a diagram showing a fifth embodiment of the present invention.

FIG. 10 is a diagram showing a sixth embodiment of the present invention.

FIG. 11 is a diagram showing a first configuration example of a reception system of a radio base station to which CDMA is applied and which is provided with an array antenna.

FIG. 12 is a diagram showing a second configuration example of a reception system of a radio base station to which CDMA is applied and which is provided with an array antenna.

FIG. 13 is a diagram showing a third configuration example of a reception system of a radio base station to which CDMA is applied and which is provided with an array antenna.

[Explanation of symbols]

10 array antenna 10E, 100 element 11 feeding method selecting means 12, 21 feeding means 22 allocating means 30, 40, 50, 60, 81, 91, 92, 102,
120, 130 Receiving terminal station 31, 85 Power feeding control unit 32, 108 Selector 33 Direction of arrival estimation unit 34, 42 Angular velocity estimator 41 Fading frequency estimation unit 43 Angular velocity evaluation table 51, 93 Path detector 52, 61 Finger correspondence unit 53, 63 adder 64, 109, 111 multiplier 80 circulator 82 transmission terminal station 83 multiplexing unit 84 transmission unit 94 control unit 101 reception unit 103 despreading unit 104 path detection unit 105 adaptive control unit 106 reception beam forming unit 107 demodulation unit 110 Channel estimation unit 112 Signal determination unit 121 Antenna weight selection unit 122 SIR measurement unit 131 Antenna weight calculation unit 132 Direction of arrival estimation unit

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 5J021 AA05 AA06 CA00 DB01 EA04                       FA14 FA16 FA31 GA01 GA02                       HA05                 5K059 AA12 BB01 CC02 CC03 DD31                       EE02

Claims (5)

[Claims] 1. A power supply system having different attributes and having a plurality of power supply systems that can be applied to supply power to an array antenna, and which has an attribute suitable for a state identified by a system including the array antenna. One or a plurality of power supply method selection means, and a single or a plurality of power supply means for supplying power to a plurality of elements constituting the array antenna based on the power supply method selected by the single or a plurality of power supply method selection means A power supply circuit comprising: 2. A power feeding method having different attributes and having a plurality of feeding methods that can be applied to feed an array antenna and which has an attribute suitable for a state identified by a system including the array antenna. One or a plurality of power supply method selection means, and for each of the plurality of power supply methods, the maximum number that can be selected in parallel by the single or a plurality of power supply method selection means, and based on the corresponding power supply method , A plurality of power supply means for supplying power to a plurality of elements forming the array antenna, and each time any one of the power supply methods is selected by the single or a plurality of power supply method selection means, the state which is the cause is identified. The traffic is provided with an allocating means for allocating, among the plurality of power feeding means, a power feeding means for performing the power feeding based on this power feeding method. Circuit. 3. The power supply circuit according to claim 1, wherein the single or the plurality of power supply system selection means are formed in parallel based on a multiple access system via the array antenna. Select a power supply method that individually corresponds to the transmission path and has an attribute suitable for the state identified in the process of processing related to these wireless transmission paths, and the single or the plurality of power supply means are connected to the wireless transmission path. A power feeding circuit for feeding power to the plurality of elements in individually corresponding base band regions or intermediate frequency regions. 4. The power supply circuit according to claim 1, wherein the single or the plurality of power supply method selection means are provided for each received wave arriving at the array antenna.
The azimuth angle arriving at the array antenna is obtained, and the larger the rate of change of the azimuth angle, the smaller the amount of processing required to set and update the characteristics of the power feed paths of the plurality of elements among the plurality of power feed methods. A power supply circuit characterized by selecting. 5. The power supply circuit according to claim 1, wherein the state is such that channel control relating to formation of a wireless transmission path via the array antenna and those wireless transmission paths are performed. A power supply circuit characterized by being identified based on all or a part of procedures of communication control and call processing relating to traffic to be transmitted via.