WO2007001052A1 - 無線通信装置、無線通信方法及び無線通信プログラム - Google Patents
無線通信装置、無線通信方法及び無線通信プログラム Download PDFInfo
- Publication number
- WO2007001052A1 WO2007001052A1 PCT/JP2006/313001 JP2006313001W WO2007001052A1 WO 2007001052 A1 WO2007001052 A1 WO 2007001052A1 JP 2006313001 W JP2006313001 W JP 2006313001W WO 2007001052 A1 WO2007001052 A1 WO 2007001052A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wireless communication
- multiple access
- division multiple
- phase change
- space division
- Prior art date
Links
- 238000004891 communication Methods 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims description 24
- 238000005562 fading Methods 0.000 claims abstract description 47
- 230000008859 change Effects 0.000 claims abstract description 31
- 230000003044 adaptive effect Effects 0.000 claims abstract description 13
- 230000008569 process Effects 0.000 claims description 11
- 230000004044 response Effects 0.000 abstract description 9
- 230000005540 biological transmission Effects 0.000 description 20
- 238000012545 processing Methods 0.000 description 14
- 238000010586 diagram Methods 0.000 description 7
- 238000001514 detection method Methods 0.000 description 5
- 238000004364 calculation method Methods 0.000 description 4
- 238000005242 forging Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 206010039740 Screaming Diseases 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
- H04B7/0842—Weighted combining
- H04B7/086—Weighted combining using weights depending on external parameters, e.g. direction of arrival [DOA], predetermined weights or beamforming
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
- H04B7/0842—Weighted combining
- H04B7/0848—Joint weighting
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/10—Polarisation diversity; Directional diversity
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J99/00—Subject matter not provided for in other groups of this subclass
Definitions
- Wireless communication apparatus Wireless communication method, and wireless communication program
- the above-described conventional technique has a problem that a load caused by calculating a response vector of the mobile station is large. This is because the calculation formula of the response vector is complicated, and an arithmetic processing device that can perform calculation of the calculation formula is expensive. In addition, the amount of computation is large, which increases power consumption.
- the mobile station in calculating the response vector of the mobile station, the mobile station extracted from the received signal of the base station The power to use the transmitted signal If there is an error in the extracted signal, the calculation of the response vector may fail.
- a wireless communication apparatus includes a plurality of antenna elements, and generates a weighting coefficient for weighting a signal for each antenna element for each wireless station.
- a wireless communication apparatus that includes an adaptive array antenna that forms a directivity pattern and wirelessly communicates with a plurality of the wireless stations, the phase change amount detecting means for detecting a phase change amount of the weighting factor, and the weighting factor
- a fading speed estimating means for estimating a fading speed of the radio station based on a phase change amount of the wireless communication station, and a communication control means for performing control for allocating a channel for space division multiple access based on the estimation. It is characterized by having.
- the communication control means is the same as the number of channels capable of simultaneously performing space division multiple access in the order of the wireless station power in which the estimated value of the fading speed is small. It is characterized by assigning control.
- the radio communication method uses a adaptive array antenna having a plurality of antenna elements to generate a weighting factor for weighting a signal for each antenna element for each radio station, thereby directivity.
- a wireless communication method for forming a pattern and performing wireless communication with a plurality of the wireless stations, wherein a process of detecting a phase change amount of the weighting factor and a phase change amount of the weighting factor includes a step of estimating a fusing speed and a step of assigning a channel for space division multiple access based on the estimation.
- the above-described wireless communication apparatus can be realized using a computer.
- the fading speed of each radio station can be estimated based on the weighting factor for forming the directivity pattern for each radio station (for example, a mobile station) as a communication partner.
- the weighting factor for forming the directivity pattern for each radio station for example, a mobile station
- FIG. 1 is a block diagram showing a configuration of a radio base station (radio communication apparatus) according to an embodiment of the present invention.
- FIG. 2 is a block diagram showing a configuration of a forging speed estimation unit shown in FIG. 1.
- FIG. 4 is a flowchart of communication control processing according to an embodiment of the present invention.
- FIG. 5 is a block diagram showing a configuration example of a radio communication system according to an embodiment of the present invention.
- FIG. 6 is an explanatory diagram for explaining an example of communication control according to an embodiment of the present invention.
- FIG. 7 is a block diagram showing another configuration example of the wireless communication system according to the embodiment of the present invention. It is.
- Each terminal m processing unit 6 (where m is an integer from 1 to M) performs wireless communication processing for each wireless communication terminal (hereinafter simply referred to as "terminal") as a wireless station serving as a communication partner. Do.
- the terminal m processing unit 6 receives baseband signals X to x.
- Terminal m processing unit 6 is
- Terminal m Received data is output.
- terminal m processing unit 6 receives terminal m transmission data.
- Terminal m processing unit 6 Terminal m Performs adaptive array antenna adaptive transmission processing on transmission data and outputs baseband signals z to z corresponding to antenna elements Antl to AntN, respectively.
- Each terminal m processor 6 Baseband signals z to z after output are the antenna elements Antl to A
- the reception weight generation unit 24 receives the baseband signals X to x and the weighting synthesis unit 20
- the reception weight generation unit 24 converts the baseband signals X to x, the reference signal r, and the array output signal y.
- MMSE Minimum Mean Square Error
- LMs Least Mean Square
- RLS Recursive Least 3 ⁇ 4 quares
- SMI Sample Matrix Inversion
- the transmission weight generation unit 26 corrects variations in gain and gain on the phase between the transmission paths from the transmission directivity forming unit 28 to the antenna elements Antl to AntN.
- the weight coefficient corrected by the transmission weight generation unit 26 is input to the transmission directivity forming unit 28.
- the fading speed estimator 30 receives weight coefficients W to W. Fading
- the suitability of space division multiple access for each terminal is determined.
- FIG. 2 is a block diagram showing a configuration of fading speed estimation unit 30.
- the fading speed estimation unit 30 includes a phase change amount detection unit 31 and a fading speed determination unit 3.
- the ratio “h (n) j” of W (n) to W (n ⁇ 1) is calculated by the equation (1).
- W. (n) represents a weighting coefficient generated by the reception weight generating unit 24 for the nth time.
- the generation interval of the weight coefficient is constant.
- N is the number of antenna elements.
- Re [h (n)] is the real part of ( ⁇ )
- Im [h (n)] is the imaginary part of ( ⁇ ).
- ⁇ ( ⁇ ) represents the phase change of W ( ⁇ ) vs. W ( ⁇ – 1), and all are phase change amounts in the same direction.
- P (n) represents the amount of phase change per predetermined time from the (n-1) th weighting factor W to W force to the nth weighting factor W to Wavg ININ.
- the phase change amount detection unit 31 outputs the phase change amount P (n) calculated by the above equations (1) to (3) to the fusing speed determination unit 32.
- the fading speed determination unit 32 determines the fading speed avg corresponding to the phase change amount P (n).
- the degree is determined based on the fading speed table 33.
- the fading speed table 33 stores in advance data indicating the correspondence between the phase change amount and the fading speed.
- FIG. 3 is an example of data stored in the fading speed table 33. In the graph shown in Fig. 3, the vertical axis shows the amount of phase change and the horizontal axis shows the fading speed. Since the correspondence between the phase change amount and the fusing speed differs for each wireless communication system to be applied, the wireless communication system to be applied is specified and obtained in advance.
- the fading speed determination unit 32 reads the fading speed value corresponding to the phase change amount P (n) received from the phase change amount detection unit 31 from the fading speed table 33.
- the read value is output to the communication control unit 12 as an estimated value 101 of the fading speed.
- FIG. 4 is a flowchart of the communication control process according to the present embodiment.
- the communication control unit 12 inputs an estimated value 101 of the fading rate of each terminal from the fading rate estimation unit 30 of each terminal m processing unit 6 to the communication control unit 12 (step Sl).
- the estimated values 101 are sorted in the order of fading speed (step S2).
- each estimated value 101 is compared with a predetermined threshold Th, and a force is determined that has an estimated value 101 that is smaller than the threshold Th (step S3).
- the communication control unit 12 allocates a conventional channel to all terminals (step S4).
- the conventional channel refers to a carrier (frequency), a time slot or a spreading code, or a channel having a plurality of combinational powers when space division multiple access is not used. Therefore, if there is no estimated value 101 smaller than the threshold Th (NO in step S3), space division multiple access is not performed.
- the communication control unit 12 selects all the terminals for which the estimated value 101 is smaller than the threshold Th, and selects the selected terminal.
- the number of connected terminals is counted (step S5) Note that the estimated value 101 includes zero.
- the communication control unit 12 compares the counted number of terminals with the maximum number of spatial channels “KJ” and determines whether the number of terminals is equal to or less than the maximum number of spatial channels “K” (step S6).
- the maximum number of spatial channels refers to the maximum number of channels that can be simultaneously subjected to space division multiple access except for some conventional channels.
- step S6 If the number of terminals is equal to or less than the maximum number of spatial channels “ ⁇ ” as a result of the determination in step S6, the communication control unit 12 performs spatial division multiple access to all terminals selected in step S5. Are assigned to the remaining terminals that have not been selected in step S5 (step S7).
- the communication control unit 12 compares the estimated value 101 of the fading speed of each terminal with a predetermined threshold Th, and uses the terminal with the estimated value 101 smaller than the threshold Th as a reference.
- the power for allocating a channel for space division multiple access In the present invention, the estimated value 101 of the fading speed is simply small without using the threshold value Th, not limited to such spatial channel allocation.
- the terminal power may also be allocated in order to the terminals for the maximum number of channels that can be allocated spatial channels.
- the communication control unit 12 may provide priority when assigning the same channel (frequency).
- the higher the UTD the higher the priority.
- communication control is performed.
- Channel (frequency) allocation by control unit 12 is performed efficiently.
- the communication control unit 12 may assign the channels (frequencies) a plurality of times.
- Computer-readable recording medium refers to a flexible disk, a magneto-optical disk, a writable non-volatile memory such as a ROM and a flash memory, a portable medium such as a CD-ROM, and a hard disk built in a computer system. This is a storage device.
- the program may be for realizing a part of the functions described above.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007523997A JPWO2007001052A1 (ja) | 2005-06-29 | 2006-06-29 | 無線通信装置、無線通信方法及び無線通信プログラム |
EP06767618A EP1901446A1 (en) | 2005-06-29 | 2006-06-29 | Radio communication device, radio communication method, and radio communication program |
US11/994,110 US20090296638A1 (en) | 2005-06-29 | 2006-06-29 | Wireless Communication Apparatus, Wireless Communication Method and Wireless Communication Program |
CN2006800222509A CN101204027B (zh) | 2005-06-29 | 2006-06-29 | 无线通信装置以及无线通信方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005-190727 | 2005-06-29 | ||
JP2005190727 | 2005-06-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007001052A1 true WO2007001052A1 (ja) | 2007-01-04 |
Family
ID=37595297
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/313001 WO2007001052A1 (ja) | 2005-06-29 | 2006-06-29 | 無線通信装置、無線通信方法及び無線通信プログラム |
Country Status (6)
Country | Link |
---|---|
US (1) | US20090296638A1 (ja) |
EP (1) | EP1901446A1 (ja) |
JP (1) | JPWO2007001052A1 (ja) |
KR (1) | KR100970519B1 (ja) |
CN (1) | CN101204027B (ja) |
WO (1) | WO2007001052A1 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008136399A1 (ja) * | 2007-04-26 | 2008-11-13 | Kyocera Corporation | 無線通信装置及び信号処理方法 |
WO2008152959A1 (ja) * | 2007-06-13 | 2008-12-18 | Kyocera Corporation | 無線通信方法および無線通信装置 |
JP2009194881A (ja) * | 2008-02-18 | 2009-08-27 | Kddi R & D Laboratories Inc | 無線基地局制御装置および無線基地局制御方法 |
JP2009231983A (ja) * | 2008-03-19 | 2009-10-08 | Kddi R & D Laboratories Inc | 無線基地局制御装置および無線基地局制御方法 |
JP2013009386A (ja) * | 2012-08-01 | 2013-01-10 | Kyocera Corp | 無線通信方法および無線通信装置 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8577296B2 (en) | 2008-08-29 | 2013-11-05 | Empire Technology Development, Llc | Weighting factor adjustment in adaptive antenna arrays |
CN101359967B (zh) * | 2008-08-29 | 2011-06-01 | 北京天碁科技有限公司 | 一种应用于高速移动场景下急剧衰落的检测方法和装置 |
BRPI0921362A2 (pt) | 2008-11-07 | 2019-09-24 | Sumitomo Electric Industries | aparelho de comunicacao |
WO2011052575A1 (ja) | 2009-10-26 | 2011-05-05 | 住友電気工業株式会社 | 無線通信装置 |
CN105577298B (zh) * | 2014-11-05 | 2018-10-16 | 辰芯科技有限公司 | 一种自适应相位检测方法及系统 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002052751A1 (fr) * | 2000-12-25 | 2002-07-04 | Sanyo Electric Co., Ltd. | Dispositif radio a directivite de transmission et procede de commande et programme de commande pour le dispositif radio |
JP2003032167A (ja) * | 2001-07-12 | 2003-01-31 | Sanyo Electric Co Ltd | 無線基地システムおよび送信指向性制御方法 |
WO2003026335A1 (fr) * | 2001-09-14 | 2003-03-27 | Fujitsu Limited | Systeme de communication mobile, station mobile et station de base |
JP2003198508A (ja) * | 2001-12-26 | 2003-07-11 | Sanyo Electric Co Ltd | アダプティブアレイ無線装置 |
JP2003244070A (ja) * | 2002-02-19 | 2003-08-29 | Sanyo Electric Co Ltd | 無線基地装置、送信電力制御方法、および送信電力制御プログラム |
JP2005190727A (ja) | 2003-12-24 | 2005-07-14 | Honda Motor Co Ltd | 燃料電池車 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3913879B2 (ja) * | 1998-02-03 | 2007-05-09 | 富士通株式会社 | 移動速度に基づく通信制御装置および方法 |
CN1202590C (zh) * | 1998-07-13 | 2005-05-18 | Ntt移动通信网株式会社 | 自适应阵列天线 |
JP3574055B2 (ja) * | 2000-08-25 | 2004-10-06 | 三洋電機株式会社 | 無線基地局 |
JP2003101427A (ja) * | 2001-09-21 | 2003-04-04 | Sanyo Electric Co Ltd | 無線装置および利得制御方法 |
JP4118599B2 (ja) * | 2002-05-20 | 2008-07-16 | 三菱電機株式会社 | ダイバーシチ受信機および受信方法 |
-
2006
- 2006-06-29 JP JP2007523997A patent/JPWO2007001052A1/ja not_active Withdrawn
- 2006-06-29 US US11/994,110 patent/US20090296638A1/en not_active Abandoned
- 2006-06-29 CN CN2006800222509A patent/CN101204027B/zh not_active Expired - Fee Related
- 2006-06-29 WO PCT/JP2006/313001 patent/WO2007001052A1/ja active Application Filing
- 2006-06-29 KR KR1020087000614A patent/KR100970519B1/ko not_active IP Right Cessation
- 2006-06-29 EP EP06767618A patent/EP1901446A1/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002052751A1 (fr) * | 2000-12-25 | 2002-07-04 | Sanyo Electric Co., Ltd. | Dispositif radio a directivite de transmission et procede de commande et programme de commande pour le dispositif radio |
JP2003032167A (ja) * | 2001-07-12 | 2003-01-31 | Sanyo Electric Co Ltd | 無線基地システムおよび送信指向性制御方法 |
WO2003026335A1 (fr) * | 2001-09-14 | 2003-03-27 | Fujitsu Limited | Systeme de communication mobile, station mobile et station de base |
JP2003198508A (ja) * | 2001-12-26 | 2003-07-11 | Sanyo Electric Co Ltd | アダプティブアレイ無線装置 |
JP2003244070A (ja) * | 2002-02-19 | 2003-08-29 | Sanyo Electric Co Ltd | 無線基地装置、送信電力制御方法、および送信電力制御プログラム |
JP2005190727A (ja) | 2003-12-24 | 2005-07-14 | Honda Motor Co Ltd | 燃料電池車 |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008136399A1 (ja) * | 2007-04-26 | 2008-11-13 | Kyocera Corporation | 無線通信装置及び信号処理方法 |
US8565826B2 (en) | 2007-04-26 | 2013-10-22 | Kyocera Corporation | Radio communication device and signal processing method |
WO2008152959A1 (ja) * | 2007-06-13 | 2008-12-18 | Kyocera Corporation | 無線通信方法および無線通信装置 |
JP2008311842A (ja) * | 2007-06-13 | 2008-12-25 | Kyocera Corp | 無線通信方法および無線通信装置 |
US8339958B2 (en) | 2007-06-13 | 2012-12-25 | Kyocera Corporation | Wireless communication method and wireless communication apparatus |
JP2009194881A (ja) * | 2008-02-18 | 2009-08-27 | Kddi R & D Laboratories Inc | 無線基地局制御装置および無線基地局制御方法 |
JP2009231983A (ja) * | 2008-03-19 | 2009-10-08 | Kddi R & D Laboratories Inc | 無線基地局制御装置および無線基地局制御方法 |
JP2013009386A (ja) * | 2012-08-01 | 2013-01-10 | Kyocera Corp | 無線通信方法および無線通信装置 |
Also Published As
Publication number | Publication date |
---|---|
CN101204027A (zh) | 2008-06-18 |
CN101204027B (zh) | 2011-12-07 |
JPWO2007001052A1 (ja) | 2009-01-22 |
KR20080031265A (ko) | 2008-04-08 |
EP1901446A1 (en) | 2008-03-19 |
US20090296638A1 (en) | 2009-12-03 |
KR100970519B1 (ko) | 2010-07-16 |
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