TW578395B - Radio communication system - Google Patents

Radio communication system Download PDF

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Publication number
TW578395B
TW578395B TW091108131A TW91108131A TW578395B TW 578395 B TW578395 B TW 578395B TW 091108131 A TW091108131 A TW 091108131A TW 91108131 A TW91108131 A TW 91108131A TW 578395 B TW578395 B TW 578395B
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Taiwan
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station
packet
packets
paths
data
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TW091108131A
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Timothy James Moulsley
Matthew Peter John Baker
Bernard Hunt
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Koninkl Philips Electronics Nv
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    • 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
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/24—Multipath
    • 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
    • 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
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/12—Communication route or path selection, e.g. power-based or shortest path routing based on transmission quality or channel quality
    • H04W40/125—Communication route or path selection, e.g. power-based or shortest path routing based on transmission quality or channel quality using a measured number of retransmissions as a link metric
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/38—TPC being performed in particular situations
    • H04W52/48—TPC being performed in particular situations during retransmission after error or non-acknowledgment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/004—Transmission of channel access control information in the uplink, i.e. towards network
    • 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
    • H04B7/0413—MIMO systems
    • 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
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)
  • Radio Relay Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Description

578395 A7 _ __B7 五、發明説明（2 ) 者之夕數天線之使用，已知如一多輸入、多輸出（MIM〇) 系統，其可以進一步增加在一單側差異配置方式上之系統 增益。如一進一步發展，多數天線之出現致能空間多工， 藉此一用於傳送之資料位元流係分割成為複數次位元流， 通過許多不同路徑傳送各次位元流。在美國專利6,〇67,29〇 中說明此一系統之一實例，藉由P w Wolniansky及其它人 在1998年9月29曰到1〇月2日義大利，比薩，公布之1998年 URSI關於信號、系統及電子之國際討論會文件中，在“ BLAST · —種用於在大量散射無線頻道上實現非常資料速 率之結構”文件中說明之另外實例，已知*BLAST系統。 可以使用其可以由一 MIM〇系統完成之功能增益來增加 在一給定誤差速率之全部資料速率，或減少一給定資料速 率之誤差速率，或一些二者之組合。也可以控制一 mim〇 系統來減少用於一給定資料速率及誤差速率之全部傳送能 量或功_率。 一可以施加ΜΙΜΟ技術之區域係一高速向下鏈接近接 (HSDPA)配置，目前係發展用於UMTS，及其可以幫助到 一行動台之資料封包之傳送上升到4 Mbps。在從在一基地 台（BS)之個別天線傳送hSDPA分離資料位元流之一建議實 施例中，依據原理，可以藉由具有至少如資料位元流一樣 多之天線之一行動台（MS)接收及解碼資料位元流。需要一 ARQ (自動重複要求）配置來確保各資料封包之正確傳送， 因為考慮精確資料傳送，如比在不足之頻道狀態（因為多 數重新傳送）下減少系統輸出量更重要。 -5- 本紙張尺度適用中國國家標準(CNS) Λ4規格(210X 297公釐） 578395 A7 B7 五、發明説明（4 從次級台接收是否正確接收各封包之一決定之裝置。 在本發明之一實施例中，各資料封包係藉由映像其到初 級台之天線中之一天線，限於一次組之可用路徑。在另外 貫施例中’波束形成技術係使用於依據一特定方向傳送各 資料封包。通過一次組之路徑傳送之資料封包可以具有不 同傳送參數，例如調變及/或編碼配置及功率位準。封閉 迴路功率控制可以單獨施加於各次組之路徑。 根據本發明之一第三觀念，其提供一次級台，具有用於 在具有包含在具有複數天線之一初級台，及次級台之間之 複數路徑之一通信頻道之一無線電通信系統中使用之至少 一天線，其中係提供用於接收藉由初級台實質上同時傳送 之複數資料封包，通過一不同次組之複數路徑傳送各封包 ，用於決定是否正確接收各封包，及用於傳送用於複數資 料封包之各資料封包之本決定到初級台之裝置。 次級-台可以傳送其之通過一次組之到初級台之可用向上 鏈接路徑，或依據任何其它適用方法是否正確接收各封包 之決定。 根據本發明之_第四觀念，其提供_種操作—無線電通 信系統之方法，系統具有包含在具有複數天線之一初級台 ,及具有至少一天線之一次級台之間之複數路徑之一通信 '員C八令初級台實質上同時傳送資料封包到次級台，通 過一不同次組之複數路徑傳送各資料封包，及次級台接收 =數貝料封包’決定是否正確接收各封包，及傳送用於複 封包之各封包之本決定到初級台。 本紙張尺度適财_家標準(CNs) A4規格（210 X 297公聲）
578395 A7 ______B7 五、發明説明（5 ) 本發明係根據先前技藝中所未見之認知，可以藉由不同 次組之可用路徑以並列方式傳送資料封包，取得在一 ΜΙΜΟ系統中使用用於封包資料傳送之改進功能。 圖式簡簟說明 現在將藉由舉例並參考附加圖式以說明本發明之實施例 ，其中： 圖1係一 ΜΙΜΟ無線電系統之一實施例之方塊圖； 圖2係用於其在傳送之前加權次位元流之一 μίμο無線 電系統之一基地台之一實施例之方塊圖； 圖3係說明一習知ARQ配置之操作之示意圖； 圖4係說明本發明之一 arq配置第一實施例之操作示意 1^1 · 圃， 圖5係說明本發明之一 arq配置第二實施例之操作示意 ran · 園， 圖6係其中不同次位元流係定向在不同終端之一 MIm〇 無線電系統實施例之方塊圖；及 圖7係說明本發明製造之一 MIm〇無線電系統之操作流 程圖。 在圖式中’已經使用相同參考編號以指示對應元件。 用於實施本發明夕押式 圖1揭示用於從一初級台100到一次級台1 10之向下鏈择 封包資料之傳送之一 MlM〇無線電系統之實施例。初級台 100包含一資料源102，其提供用於到次級台110之傳送之 一資料位元流。藉由一串列對並列轉換器（s/p) i04分割本 578395 A7
位元流，以產生提供於一發射器（τχ) 1〇6之複數資料次位 元流。發射器1 06配置用於傳送到多數天線1 〇8 (在圖夏中 標示1、2 ' 3及4)，以從基地台（BS) 1〇〇傳送資料次位元流 到一行動台（MS) 110。假設天線108實質上係全方向（或設 計於給定在一扇形單元上之範圍）。 適當之編碼，通常包含前向誤差修正（FEC),可以藉由 BS 100在多工之前施加。這係已知如垂直編碼及具有通 過所有次位元流施加編碼之優點。然而，因為係需要聯合 編碼’及難以個別摘取各次位元流，問題可以產生在摘取 次位元流方面。如一可以個別編碼各次位元流之選擇，一 已知如水平編碼之技術可以簡化接收器操作。例如在藉由 X Li及其它人在2000年11月27曰到12月1曰，舊金山，IEEe Globecom 2000討論會之會議記錄中，在“關於blast之功 能之重複偵測及解碼之作用，，之文件中討論這些技術。 如果使用垂直編碼，施加之FEC必須具有處理包含複數 路徑之全部ΜΙΜΟ頻道之誤差修正能力《將瞭解在bs 1〇〇 及MS 110之間之該組路徑，通常將包含定向路徑及不定向 路徑，後者係藉由一或更多干擾反射信號之路徑。 MS 110包含複數天線118 (在圖1中標示a、b、C及D)。 藉由天線118接收之信號係提供於接收器（1〇()116,其摘 取來自接收信號之複數傳送資料次位元流。然後，藉由一 並列對串列轉換器（P/S) 1 14重新組合資料次位元流，及提 供於一資料輸出區塊112。雖然BS 100及MS 110二者係如 所示具有相同數量之天線，實際上不是必要，及可以根據 -9- 本紙張尺度適用中國國家標準(CNS) A4規格(210X 297公A) 578395 五 A7 B7 空間及容量限制來最佳化天線之數量。 在一 BS 1 00之最簡單實施中’映像各資料次位元流到一 分離天線10 8。此一實施方式係適用於空間非交互作用無 線電頻道。在普通情形中，在圖2中說明一適用於那個情 形之BS 100，在施加一複合加權202 (每一天線1〇8具有一 用於各資料次位元流之加權數值）之後，應該傳送各資料 次位元流到各天線108。本方法可以使用於映像各資料次 位元流到一不同天線波束。可以瞄準天線波束於預先決定 之方向中，或可以動態決定方向，來取得改變無線電頻道 狀態之優點。在吾人共同申請且未公告之英國專利申請案 01023 16.7 (申請人參考編號PHGB 010012)中揭示一具有 動態改變波束方向之ΜΙΜΟ系統之一實例。一重要之特定 狀態係映像各資料次位元流於一次組之天線（即，一歧加 權係零）。 為r簡化，下面實施例使用在資料次位元流及天線ι〇8 之間之一對一映像之最簡單情形，但是將瞭解本發明係不 限於此一狀態。 在一封包資料傳送系統中，ARQ可以使用於修正任何錯 誤封包。在圖3中說明一依據習知方法操作之arq配置實 例。依據在從一 BS 100到一 MS 110之一向下鏈接（dl)頻道 上之排序，傳送識別如Pn之資料封包3〇2，其中n係一排序 5虎碼。在5尤明之狀態中’糟由MS 110止接收第一資料封 包P!，MS 1 10在一向上鏈接頻道（UL)上傳送一確認（a,) 304。藉由BS 100反應於Αι之接收，選擇等待傳送之後續 -10- 本紙張尺度適用中國國家標準(CNS) A4規格(210 X 297公釐) 578395 A7 B7
以從具有不同品質需求之不同資料源取得用於個別次位元 流之資料。如在吾人共同申請且未公告之國際專利申請= PCT/EP 01/13690 (申請人參考編號pHGB 〇〇〇168)中揭示 ，可以根據無線電鏈接之品質，選擇改變施加於各資料 位元流之FEC之位準。進一步，可以產生用於不同資料二 位元流之調變及編碼配置（Mcs)之不同選擇，及可利用反 應於不同頻道狀態之不同功率位準傳送次位元流。
裝 在關於上面實施例之進一步變化型式中，分離封閉迴路 功率控制可以施加於來自各天線1〇8 (即使用獨立頻道）之 傳送。如在吾人共同申請且未公告之國際專利申請案 PCT/IB 01/025 55 (申請人參考編號pHGB 〇1〇〇22)中揭示， 可以利用一最佳天線1〇8之選擇，如同一適用“。之選擇 幫助此一配置。 訂
在本發明之另一實施例中，如圖6所示，可以路由不同 次位元流於不同終端11〇a、u〇b。在說明之實例中，一Μ 100包含二資料源102 (]01及〇2),準備各資料源用於一不 同MS 110。藉由一串列對並列轉換器1〇4 (S1)分割準備用 於一第一MS 110a，來自資料源〇1之資料成為二次位元流 及k仏於發射器（TX) 106。通過標示1及2之天線1〇8 傳送這些一 > 料次位元流。同樣，藉由一串列對並列轉換 器104 (S2)分割準備用於一第二MS n〇b，來自資料源D2 之f料成為二次位元流，及提供於發射器（τχ) 1〇6。通過 標不3及4之天線108傳送這些二資料次值元流。應該注意 本配置不需要直接前向個別MSs丨1〇a、〖1〇b之天線波束，
578395 A7 ___ B7 ___ 五、發明説明（13 ) 知道利用不同擴展碼，或在時脈中之相同擴展碼補償傳送 多數資料位元流之可能性。可以結合本發明使用這些技術 ’其中多於一資料位元流具有相同擴展碼。 在上面說明中，‘基地台，或‘初級台’一詞關於實際上可 以配置於固定基礎建設之種種部分之間之一整體d在一 UMTS系統中，例如在一‘節點B，中實施一 BS 100之功能， 其係固定基礎建設直接與一 MS 110界面之部分，及位於在 無線電網路控制器（RNC)中之一較高位準。如同它們在資 料封包從一 BS 100到一 MS 110之傳送中之使用，說明之技 術也可以使用於依據相反方向之封包傳送。在本情形中， BS 100及MS 110之作用將相反於上面之說明，具有BS 1〇〇 適用一次級台之作用，及MS 110適用一初級台之作用。 從審讀本揭露内容，習於此技者將瞭解其它修改型式， 這些修改可以關於在設計、製造及無線霓通信系統及其中 元件部-分之使用中其它已知特性，及可以替代使用或附加 到文内已說明之特性。 在本說明書及申請專利範圍中，在一元件前面之前置詞 ‘a’或‘an’並不排除複數諸元件之存在。此外，‘包含，一字 並不排除列表之外之元件或步驟之存在。 ___ -16- 本紙張尺度適用中國®家標準(CNS) A4規格(21GX297公货)

Claims (1)

  1. 第091108131號專利申請案 中文申請專利範圍替換本(92年 申請專利範圍 1 · 一種無線電通信系統，其中 具有複數天線之一初級台及 之間之複數路徑，其中該初 送複數封包到該次級台之裝 組之該複數路徑傳送，及該 收該複數資料封包，用於決 及用於傳送用於該複數封包 具有一無線電頻道，包含在 具有至少一天線之一次級台 台 級台具有用於實質上同時傳 置，各封包係通過一不同次 次級台具有裝置，以用於接 定是否係正確接收各封包， 之各封包之本決定到該初級 2. 一種初級台’其具有複數天線以用於-具有-通信頻道 之=電通信系統中，通信頻道包含在該初級台及具有 徂田^線 < 人級台之間之複數路徑，其中裝置係提 ,、於貫質上同時傳送複數資料封包到該次級台各封 包係通過—不同：欠組之該複數路㈣送，及詩從該次 級台接收是否正確接收各封包之一決定。 利範圍第2項之初級台，其特徵在提供用於映 像各資料封包到該複數天線之裝置。 =申請專利範圍第2項之初級台，其特徵在提供加權裝 用於映像各資料封包到一別天線波束。 如申吻專利範圍第2至4項任-項之初級台，其特徵在 供裝置用於根據在其上傳送該封包之該次組之路徑，改 變關於一資料封包之傳送參數。 範圍第5項之初級台，其特徵在改變之傳送 ，、選自調變配置、編碼配置及傳送功率位準。 7·如申印專利範圍第6項之初級台，其特徵在提供裝置用 10X297公釐） 本紙張尺度適财S ®家科(CNS) A4%— 圍範利專 請中 ABC D 2 12. 92. 年 Λ 正充修補 ;獨立調整各次組之路徑之傳送功率之封閉迴路功率控 制。 如申明專利範圍第2、3或4項之初級台，其特徵在提供 裝，用於重新傳送一錯誤接收之資料封包，該封包以次 級口藉由複數途徑之一不同次組用於該資料封包之初始 傳送。 9·:種次級台，其具有至少一天線，用於一具有一通信頻 道之無線電通信系統中，通信頻道包含在具有複數天線 之一初級台及該次級台之間之複數路徑，其中提供裝置 以用於接收藉由該初級台實質上同時傳送之複數資料封 包，各封包係通過一不同次組之該複數路徑傳送，及用 於決定疋否正確接收各封包，及用於傳送用於複數資料 封包之各封包之決定到該初級台。 10·如7請專利範圍第9項之次級台，其特徵在該初級台及 該次級台之間之一通信頻道，包含複數路徑，及其中用 於傳送正確接收之該決定到該初級台之裝置，包含用於 實質上同時傳送相應於各該同時傳送之資料封包確認之 裝置’各確§忍係通過一不同次組之該複數路徑傳送。 U·如申請專利範圍第9或10項之次級台，其特徵在提供裝 置以用於傳送頻道品質回授資訊到該初級台，該資訊關 於各使用於傳送資料封包之該次組之路徑。 12·如申請專利範圍第9或1〇項之次級台，其特徵在提供裝 置，用於傳送同步資料位元流之該數量到該初級台，使 用該相同空中界面資源通過該複數路徑之次組傳送，該 本紙張尺度適财國S家料(CNS) A4規格； X 297公釐） 578395
    13. 如申請專利範圍第12項之次級台，其特徵在該系統根據 一編碼多向近接通信協定操作，及其中該空中界面資源 包含頻道化及擴展碼。 " 14. 一種操作一具有—通信頻道之無線電通信系統的方法， 次級台可以同時接收或處理。 通仏頻道包含在具有複數天線之一初級台及具有至少一 天線之一次級台之間之複數路徑，其中該初級台實質』 同時傳送複數資料封包到該次級台，各封包係通過 同次組之該複數路徑傳送，及該次級台接收該複數資 封包’判定是否正確接收各封包，及傳送用於該複數: 包之各資料封包之本決定到該初級台。
    裴 # _____ -3- 巧張尺度適財H _a家標準(CNS) A4規格(21〇 X 297公釐）
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US9178577B2 (en) 2015-11-03
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ATE410836T1 (de) 2008-10-15
DE60229230D1 (de) 2008-11-20
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US20020159431A1 (en) 2002-10-31
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MXPA02012784A (es) 2003-05-15
KR20030014730A (ko) 2003-02-19

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