JP4925131B2 - スクランブル符号決定を実行するためのサーチャ・ハードウェア - Google Patents
スクランブル符号決定を実行するためのサーチャ・ハードウェア Download PDFInfo
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- JP4925131B2 JP4925131B2 JP2007551237A JP2007551237A JP4925131B2 JP 4925131 B2 JP4925131 B2 JP 4925131B2 JP 2007551237 A JP2007551237 A JP 2007551237A JP 2007551237 A JP2007551237 A JP 2007551237A JP 4925131 B2 JP4925131 B2 JP 4925131B2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
- H04B1/7073—Synchronisation aspects
- H04B1/7083—Cell search, e.g. using a three-step approach
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
- H04B1/7073—Synchronisation aspects
- H04B1/70735—Code identification
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
- H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
- H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
- H04B2201/70707—Efficiency-related aspects
- H04B2201/7071—Efficiency-related aspects with dynamic control of receiver resources
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Radar Systems Or Details Thereof (AREA)
Description
Claims (17)
- 関連するスクランブル符号グループを同定するために、受信無線信号に対してプライマリおよびセカンダリ同期を実行するセル・サーチ・システムと、
前記スクランブル符号グループ内のスクランブル符号を同定し、前記受信無線信号のマルチパス成分を同定するサーチャと、
プロセッサを備え、
前記プロセッサが、(a)前記受信無線信号をスクランブルするのに使用されるスクランブル符号を決定するために前記受信無線信号を処理し、(b)前記受信無線信号のマルチパス成分を同定するように前記サーチャを制御する、受信機。 - 前記セル・サーチ・システムが、前記セカンダリ同期を実行した後で、非活動化される、請求項1に記載の受信機。
- 前記サーチャが、前記セル・サーチ・システムによって前記セカンダリ同期が実行された後で、活動化される、請求項1に記載の受信機。
- 前記スクランブル符号を同定する前記サーチャによって使用するために、前記関連するスクランブル符号グループのうちの少なくとも1つのスクランブル符号を動的に生成するスクランブル符号生成器をさらに備える、請求項1に記載の受信機。
- 前記関連するスクランブル符号グループのうちの少なくとも1つの事前生成スクランブル符号を保存するメモリをさらに備える、請求項1に記載の受信機。
- 前記サーチャが、前記スクランブル符号を同定するために、前記メモリから前記関連するスクランブル符号グループのうちの前記少なくとも1つのスクランブル符号を読み取る、請求項5に記載の受信機。
- 前記サーチャが、前記関連するスクランブル符号グループのうちの各スクランブル符号を、受信共通パイロット・チャネル(CPICH)信号と相関させ、最大相関ピークを有する前記スクランブル符号を同定する、請求項1に記載の受信機。
- 前記サーチャが、前記関連するスクランブル符号グループのうちの各スクランブル符号の異なるオフセットを相関させる、請求項7に記載の受信機。
- スペクトル拡散受信機が、符号分割多元接続(CDMA)受信機である、請求項1に記載の受信機。
- 受信機内で使用する方法であって、
スクランブル符号でスクランブルされた無線信号を前記受信機で受信するステップと、
前記受信無線信号のプライマリ同期を前記受信機のセル・サーチ・システムで実行するステップと、
前記受信無線信号のセカンダリ同期を前記受信機の前記セル・サーチ・システムで実行することによって、前記スクランブル符号に関連するスクランブル符号グループを同定するステップと、
前記関連するスクランブル符号グループからスクランブル符号を前記受信機のサーチャで同定するステップと、
前記受信無線信号のマルチパス成分を前記受信機の前記サーチャで同定するステップと、
を含む、前記方法。 - 前記実行するステップの後で、前記セル・サーチ・システムを非活動化するステップをさらに含む、請求項10に記載の方法。
- 前記同定するステップの前に、前記サーチャを活動化するステップをさらに含む、請求項10に記載の方法。
- 前記同定するステップが、
前記関連するスクランブル符号グループのうちの各スクランブル符号を、受信共通パイロット・チャネル(CPICH)信号と相関させるステップと、
最大相関ピークを有する前記スクランブル符号を同定するステップと、
を含む、請求項10に記載の方法。 - 前記相関させるステップが、前記関連するスクランブル符号グループのうちの各スクランブル符号の異なるオフセットを相関させるステップをさらに含む、請求項13に記載の方法。
- 前記関連するスクランブル符号グループのうちの少なくとも1つのスクランブル符号をメモリ内に保存するステップと、
必要に応じて、前記相関させるステップを実行するために、前記メモリから前記関連するスクランブル符号グループのうちの前記少なくとも1つのスクランブル符号を読み取るステップと、
をさらに含む、請求項13に記載の方法。 - 前記相関させるステップで使用するために、少なくとも1つのスクランブル符号を動的に生成するステップをさらに含む、請求項13に記載の方法。
- 前記受信機が、符号分割多元接続(CDMA)受信機である、請求項10に記載の方法。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US2005/001188 WO2006078234A1 (en) | 2005-01-14 | 2005-01-14 | Cell search using rake searcher to perform scrambling code determination |
Publications (2)
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JP2008527913A JP2008527913A (ja) | 2008-07-24 |
JP4925131B2 true JP4925131B2 (ja) | 2012-04-25 |
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JP2007551237A Active JP4925131B2 (ja) | 2005-01-14 | 2005-01-14 | スクランブル符号決定を実行するためのサーチャ・ハードウェア |
Country Status (6)
Country | Link |
---|---|
US (1) | US8442094B2 (ja) |
EP (1) | EP1836777A1 (ja) |
JP (1) | JP4925131B2 (ja) |
CN (1) | CN101103547A (ja) |
BR (1) | BRPI0519320A2 (ja) |
WO (1) | WO2006078234A1 (ja) |
Families Citing this family (7)
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US8223625B2 (en) * | 2006-08-23 | 2012-07-17 | Qualcomm, Incorporated | Acquisition in frequency division multiple access systems |
JP4803598B2 (ja) * | 2006-09-28 | 2011-10-26 | 京セラ株式会社 | 無線通信端末および無線通信端末における通信制御方法 |
CN101136691B (zh) * | 2006-10-16 | 2011-08-10 | 中兴通讯股份有限公司 | 小区搜索方法和系统 |
JP5045951B2 (ja) * | 2007-01-24 | 2012-10-10 | 日本電気株式会社 | 無線移動局、無線基地局制御装置、無線システム、および、無線セル管理方法 |
CN101414871B (zh) * | 2007-10-19 | 2013-03-13 | 鼎桥通信技术有限公司 | 扰码配置方法及装置 |
CN101557604B (zh) * | 2008-04-11 | 2012-09-05 | 中兴通讯股份有限公司 | 邻小区指示信息的获取方法及无线接入网系统 |
CN101373988B (zh) * | 2008-10-21 | 2011-10-05 | 安徽创毅通信科技有限公司 | 一种异频小区搜索的实现方法及移动终端 |
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Also Published As
Publication number | Publication date |
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EP1836777A1 (en) | 2007-09-26 |
US8442094B2 (en) | 2013-05-14 |
US20080025376A1 (en) | 2008-01-31 |
CN101103547A (zh) | 2008-01-09 |
WO2006078234A1 (en) | 2006-07-27 |
BRPI0519320A2 (pt) | 2009-01-13 |
JP2008527913A (ja) | 2008-07-24 |
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