JP2009538039A5 - - Google Patents

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JP2009538039A5
JP2009538039A5 JP2009510971A JP2009510971A JP2009538039A5 JP 2009538039 A5 JP2009538039 A5 JP 2009538039A5 JP 2009510971 A JP2009510971 A JP 2009510971A JP 2009510971 A JP2009510971 A JP 2009510971A JP 2009538039 A5 JP2009538039 A5 JP 2009538039A5
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offset
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JP2009510971A
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JP2009538039A (ja
JP4950286B2 (ja
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Priority claimed from US11/435,664 external-priority patent/US7680075B2/en
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コンパクトセル内の基地局の識別はビーコン信号の少なくとも１つのベンチマーク、好ましくは２つのベンチマークに対する位相シフトを用いて達成される。（以降の開示において、位相シフトという用語と位相という用語は入れ替え可能なものとする。）本発明の目的のために、ベンチマークは反復される送信パターンから具体的に識別可能な時間の点とする。したがって、ＣＤＭＡシステムの例において、代表的ベンチマークは各ＰＮオフセットが始まる時間である。ＵＴＭＳシステムでも、代表的ベンチマークは各データフレームの始点である。各ベンチマークに関連する位相はビーコン信号のパターンが現実に開始する各ベンチマークに対する時間の点である。具体的には、ＣＤＭＡシステムにおいては、２秒のインターバルの始点がグローバル測位衛星（ＧＰＳ）信号によってマーキングされる。前述したように、そのような２秒間隔が７５個の２６−２／３ミリ秒区間に分割される。各区間が、２秒のインターバルの始点をマーキングするＧＰＳ信号に対するベンチマーク時間を有する５１２個のＰＮオフセットに順次分割される。従って、さらに説明すると、３３番目のＰＮオフセットがベンチマークである。３３番目のＰＮオフセット７の後にビーコン信号がその擬似ランダムノイズパターンの８個のチップを開始する場合(図１の６)、信号の位相シフトの時間点は時間の線２上の点３となる。同様に、後続の時間区間において、３４番目のＰＮオフセット９の前に４個のチップを開始するようにビーコン信号のパターンが形成される場合（図１の８）、位相シフトは時間４によって表される。
JP2009510971A 2006-05-17 2007-05-04 基地局の識別方法 Expired - Fee Related JP4950286B2 (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US11/435,664 US7680075B2 (en) 2006-05-17 2006-05-17 Identification of base stations
US11/435,664 2006-05-17
PCT/US2007/010965 WO2007136530A2 (en) 2006-05-17 2007-05-04 Identification of base stations

Publications (3)

Publication Number Publication Date
JP2009538039A JP2009538039A (ja) 2009-10-29
JP2009538039A5 true JP2009538039A5 (ja) 2012-03-15
JP4950286B2 JP4950286B2 (ja) 2012-06-13

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ID=38645863

Family Applications (1)

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JP2009510971A Expired - Fee Related JP4950286B2 (ja) 2006-05-17 2007-05-04 基地局の識別方法

Country Status (6)

Country Link
US (1) US7680075B2 (ja)
EP (1) EP2018778B1 (ja)
JP (1) JP4950286B2 (ja)
KR (1) KR101044566B1 (ja)
CN (1) CN101449616B (ja)
WO (1) WO2007136530A2 (ja)

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