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公开(公告)号：JP4040042B2
公开(公告)日：2008-01-30
申请号：JP2004380206
申请日：2004-12-28
Applicant: 株式会社エヌ・ティ・ティ・ドコモ , 株式会社エヌ・ティ・ティ・ドコモ四国
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公开(公告)号：JP2005182190A
公开(公告)日：2005-07-07
申请号：JP2003418497
申请日：2003-12-16
Applicant: Ntt Docomo Inc , Ntt Docomo Tokai Inc , 株式会社エヌ・ティ・ティ・ドコモ , 株式会社エヌ・ティ・ティ・ドコモ東海
Inventor： MIYOSHI YOSHIAKI , ISHIDA AKIRA , MURATA KATSUTOSHI
Abstract: PROBLEM TO BE SOLVED: To provide a position information providing apparatus that efficiently detects detailed position information about mobile communication terminals in a specific area.
SOLUTION: Upon a search operation on a search apparatus 12, the position information providing apparatus 16 sends an area code request signal to mobile communication terminals 20 to be searched. The mobile communication terminals 20 send a base station code of a base station 18 in communication with the mobile communication terminals 20 to an area code providing apparatus 22. The area code providing apparatus 22 converts the base station code to an area code and sends the area code to the position information providing apparatus 14. The position information providing apparatus 12 sends a detailed position information request signal to mobile communication terminals 20A and 20B whose received area code matches the area code of the search area. The mobile communication terminals 20A and 20B then use GPS positioning and send detailed position information to the position information providing apparatus 12. The position information providing apparatus 12 sends the detailed position information to the search apparatus 12.
COPYRIGHT: (C)2005,JPO&NCIPIAbstract translation: 要解决的问题：提供一种位置信息提供装置，其有效地检测关于特定区域中的移动通信终端的详细位置信息。 解决方案：在搜索装置12上进行搜索操作时，位置信息提供装置16向要搜索的移动通信终端20发送区域码请求信号。 移动通信终端20将与移动通信终端20通信的基站18的基站代码发送到区域代码提供装置22.区域代码提供装置22将基站代码转换为区域代码，并将区域 位置信息提供装置12向接收区域码与搜索区域的区域码匹配的移动通信终端20A和20B发送详细的位置信息请求信号。 然后，移动通信终端20A，20B使用GPS定位，并向位置信息提供装置12发送详细的位置信息。位置信息提供装置12向搜索装置12发送详细的位置信息。版权所有（C）2005 ，JPO＆NCIPI
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3.发明专利
公开(公告)号：JP5374165B2
公开(公告)日：2013-12-25
申请号：JP2009002402
申请日：2009-01-08
Applicant: 株式会社エヌ・ティ・ティ・ドコモ
IPC: H04W52/02
Abstract: The invention discloses a method for setting working parameters of user equipment according to the available energy of the user equipment, which comprises the following steps: the user equipment detects the current available energy and reports detection result to the base station when the available energy changes a level; the base station receives the detection result of the available energy of the user equipment and matches between the level of the available energy of the user equipment and the working parameter variation factors to determine that the user equipment needs updated working parameters; the base station adjusts the updated working parameters needed by the user equipment to a preset value corresponding to the level of the detected available energy and controls the user equipment to operate according to the adjusted working parameters. The invention further comprises a device for setting the working parameters of the user equipment based on the available energy of the user equipment.
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4.发明专利
公开(公告)号：JP5373798B2
公开(公告)日：2013-12-18
申请号：JP2010524727
申请日：2009-08-11
Applicant: 株式会社エヌ・ティ・ティ・ドコモ
Inventor： 啓之 石井
CPC classification number: H04W56/005 , H04W56/00 , H04W76/048
Abstract: To determine a downlink synchronization state in a DRX state or in a state in which uplink timing synchronization is not maintained in user equipment, a mobile station (100) configured to perform communications with a radio base station (200) determines a downlink synchronization state by comparing RSRP measured based on a downlink reference signal transmitted from the radio base station (200) with Qrxlevmin notified from the radio base station (200) when the mobile station (100) is in a connected state in which a radio link with the radio base station (200) is established and in the discontinuous reception state.
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公开(公告)号：JP5373650B2
公开(公告)日：2013-12-18
申请号：JP2010010058
申请日：2010-01-20
Applicant: 株式会社エヌ・ティ・ティ・ドコモ
Inventor： 秀和 田岡 , 勝利 楠目 , イブラヒム カシャバ カリム
IPC: H04J99/00
CPC classification number: H04B7/0417 , H04B7/0452 , H04B7/0456 , H04B7/0639 , H04L1/0026 , H04L5/0007 , H04L25/0204 , H04L25/0224 , H04L25/0391 , H04W28/18
Abstract: To perform feedback of channel information suitable for MU-MIMO transmission while exploiting a codebook that defines precoding matrixes and PMIs suitable for SU-MIMO transmission, it is a feature that a channel matrix corresponding to a channel transmission path is defined using a plurality of precoding matrixes defined in a codebook suitable for SU-MIMO transmission and a plurality of adjustment coefficients to respectively adjust the plurality of precoding matrixes, a channel information selecting section (111) selects a plurality of precoding matrixes and/or a plurality of adjustment coefficients, and that the selected plurality of precoding matrixes and/or the plurality of adjustment coefficients are transmitted to a base station apparatus as channel information in uplink.
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Patent Agency Ranking
公开(公告)号：JP5372118B2
公开(公告)日：2013-12-18
申请号：JP2011262695
申请日：2011-11-30
Applicant: 株式会社エヌ・ティ・ティ・ドコモ
Abstract: PROBLEM TO BE SOLVED: To suppress a grating lobe in a reflect array which reflects an incident wave in a desired direction. SOLUTION: A reflect array comprises at least first and second element arrays which are adjacent to each other, and each of the first and second element arrays includes a plurality of elements. A phase difference of radio waves reflected by two elements belonging to one element array between the first and second element arrays is proportional to a product of an interval between the two elements and a value of a trigonometric function with a reflection angle of a radio wave as an argument, the total of phase differences over all the plurality of elements belonging to one element array corresponds to 2π, and a phase of a radio wave reflected by any element belonging to the first element array is also different from the phase of a radio wave reflected by any element belonging to the second element array. COPYRIGHT: (C)2013,JPO&INPIT
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公开(公告)号：JP5372087B2
公开(公告)日：2013-12-18
申请号：JP2011191032
申请日：2011-09-01
Applicant: 三菱電機株式会社 , 株式会社エヌ・ティ・ティ・ドコモ
Abstract: PROBLEM TO BE SOLVED: To provide an interference control method which can reduce interference between base stations. SOLUTION: In a cellular communication system comprising femtocell base station 3, 4, and a control station 1, an interference control method controlling interference between the femtocell base station 3 and 4 is provided. The control station 1 designates time zone for transmission stop processing and measurement of interference power to the femtocell base station 3 and 4. The femtocell base station 3 and 4 perform the transmission stop processing and the measurement of interference power in the designated time zone and report the measurement result to the control station 1. Based on the measurement result acquired from the femtocell base station 3 and 4, the control station 1 calculates setting value for each of the femtocell base station 3 and 4 to enable downlink transmission with interference reduced in the system and notifies the femtocell base station 3 and 4 of the setting values. The femtocell base station 3 and 4 update their own settings based on the notified setting values. COPYRIGHT: (C)2012,JPO&INPIT
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公开(公告)号：JP5371768B2
公开(公告)日：2013-12-18
申请号：JP2009539018
申请日：2008-10-21
Applicant: 株式会社エヌ・ティ・ティ・ドコモ
Inventor： 啓之 石井
CPC classification number: H04B17/327 , H04B17/26 , H04B17/382 , H04W36/0094
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公开(公告)号：JP5371679B2
公开(公告)日：2013-12-18
申请号：JP2009237353
申请日：2009-10-14
Applicant: 株式会社エヌ・ティ・ティ・ドコモ
Abstract: PROBLEM TO BE SOLVED: To rapidly and accurately analyze the moving state of a large number of users moving toward a predetermined landmark. SOLUTION: The information analysis device includes: a first population approximate value calculation means for calculating a population approximate value per sector based on range information for each sector (the number of mobiles within a range) and a predetermine calculation rule; a second population approximate value calculation means for calculating a population approximate value for each mesh section from the population approximate value per sector based on the positional relationship between the sectors and sections; a distance calculation means for calculating the distance between the center position of each section and the closest landmark based on center position information of each section and positional information of the target landmark; a correspondence priority calculation means for calculating a correspondence priority correlated with the calculated distance and the population approximate value for each section; an extraction means for extracting a section whose calculated correspondence priority exceeds a predetermined threshold value as a correspondence priority region; and an output means for outputting a map indicating at least the correspondence priority region. COPYRIGHT: (C)2011,JPO&INPIT
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公开(公告)号：JP5371633B2
公开(公告)日：2013-12-18
申请号：JP2009195820
申请日：2009-08-26
Applicant: 株式会社エヌ・ティ・ティ・ドコモ
CPC classification number: H01Q3/46
Abstract: A reflect array (1) according to the present invention includes a plurality of array elements (10) forming an array configured to control a direction of a reflected wave (scattered wave) by controlling a phase of the reflected wave; and a ground plane (30). The ground plane (30) has a structure with a frequency selective function.
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