TWI334739B - Closed loop transmit diversity of point to multipoint physical channels - Google Patents

Closed loop transmit diversity of point to multipoint physical channels Download PDF

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Publication number
TWI334739B
TWI334739B TW095128939A TW95128939A TWI334739B TW I334739 B TWI334739 B TW I334739B TW 095128939 A TW095128939 A TW 095128939A TW 95128939 A TW95128939 A TW 95128939A TW I334739 B TWI334739 B TW I334739B
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Taiwan
Prior art keywords
transmission
antenna element
point
channel
antenna
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TW095128939A
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English (en)
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TW200723905A (en
Inventor
E Terry Stephen
Zeira Ariela
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Interdigital Tech Corp
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Publication of TWI334739B publication Critical patent/TWI334739B/zh

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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
    • 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
    • H04B7/0634—Antenna weights or vector/matrix coefficients
    • 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
    • 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
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0689—Hybrid systems, i.e. switching and simultaneous transmission using different transmission schemes, at least one of them being a diversity transmission scheme

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Description

1334739 九、發明說明： 【發明所屬之技術領域】 本發明基本上係關於一無線通信系統，特別是，本發明係關 於使用傳輸多樣化以在如此之系統中支持點對多點頻道。 【先前技術】 於無線通信系統中，對於使用點對多點服務之需求不斷的增 加’而在點對多點服務中，一個傳輸點係同時傳送資料至多個接 收點。點對多點服務之例子是多媒體廣播（multimediabroadcast) 及多重傳送服務（multicast service )。 無線通信系統中一般使用之概念是傳輸多樣化。在傳輸多樣 化中，多個天線元件係被用以傳輸相同的服務信號，而藉由每一 個天線，所傳輸之信號之相位及振幅皆會加以調整，因此，整體 的傳輸係會被強迫朝向一所需之接收器，而在系統中之其他接收 器則自該服務傳輸中接收較少量或是沒有接收到任何傳輸能量。 對點對點服務而言，傳輸多樣化可被用以隔離使用者，並且據此 而增加整體之無線資源效能（radi〇 resource efflcienCy )。 雖然傳輸多樣化可被用來讓無線資源之使用更為有效，但在 點對多點通信中應用傳輸多樣化是有問題的。接收點對多點通信 之使用者在地理上付出如此之多，以致於傳輸多樣化可能會降低 一些使用者所接收之信號的品質，另外，來自多個使用者之相位 及振幅資訊需要加以處理，並且來自多個使用者的資訊可能會相 5

Claims (1)

  1. Γ-------------------------〜 . 1'. 十、申請專利範圍： L—— L 一種在無線通訊中肋由一傳輸點傳輸資料的方法，該方法包 含： 於該傳輸點提供具有複數個天線元件的一傳輪天線陣列； 藉由該傳輸點使用一專用物理頻道而從多個接收點中的每一 接收點接收每一天線元件的測量頻道資訊； 將該測量頻㈣訊互棚聯，以蚊每—天線元件的加 權係數； 在藉由每-天線元件發射之前對—點對以傳輸制該 係數。 2. 根據申請專利範圍第丨項所述之方法，更包含： 基於-預練準來歧是魏制該加祕數於該每一天線 元件。 3. 根據申請專利範圍第1項所述之方法，更包含： 將該互相Μ難頻道資訊與-門檻細比較以決定傳輸多 樣化是否應該被關閉、是否應該對每一天線元件施用新的加權 值，或是是否應該在每-天線元件场持先前頻道加權值。 4. 根據申請專利範圍第3項所述之方法，其中在該互相關聯測量 頻道貧訊高於該門概圍的條件下，施用錢加雜，而在該互 相關聯測量資贿於該範圍_餅下，轉該先前頻 道加權值，以及在該互相關聯測量頻道資訊低於該門檻範圍的條 件下，關閉傳輸多樣化。 1334739 情？刀穴力H::' 5.根據申睛專利範圍第1項所述之方法，其為設置以於無線通信 中使用的一通信站所應用。 6·根據申凊專利範圍第1項所述之方法，其為設置以於無線通信 中使用的一基地台所應用。 7. —種設置以在無線通訊中傳輸資料到多重接收點的傳輸點，該 傳輸點包含： 一傳輸天線陣列，其具有複數個天線元件； 用以藉由該傳輸點使用一專用物理頻道而從每一接收點接收 每一天線元件的測量頻道資訴之裝置； 用以互相關聯該測量測量頻道資訊以決定每一天線元件的加 權係數之裝置； 用以在藉由每一天線元件發射之前對一點對多點傳輸施用該 加權係數之裝置。 8. 根據申請專利範圍第7項所述之傳輸點，更包含： 用以基於一預定標準來決定是否應施用該加權係數於該每一 天線元件之裝置。 9. 根據申請專利範圍第7或:8項所述之傳輸點，更包含： 用以將該互相關聯測量頻道資訊與一門檻範圍比較之裝置， 其決定傳輸多樣化是否應該被關閉、是否應該對每一天線元件施 用新的加權值，或是是否應該在每一天線元件上維持先前頻道加 權值。 12 '1334739 10.根據申請專利範圍第9項所述之傳輸點，其中用以比較之裝置 係設置，使得在該互相關聯測量頻道資訊高於該門檻範圍的條件 下，施用該新加權值，而在該互__量頻道#訊落於該門根 範圍内的條件下，維持該先前頻道 「點’係設置如同於無線通 信中使用的一基地台 量頻道資職卿職_^觀，卩細酬聯測 11.根據申請專利範圍第7項所延之傳:閉傳輸多樣化。 1334739
    2/3
    第2圖 1334739 /3 3/ Mco«
TW095128939A 2002-08-07 2003-08-05 Closed loop transmit diversity of point to multipoint physical channels TWI334739B (en)

Applications Claiming Priority (1)

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US40219902P 2002-08-07 2002-08-07

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TW200723905A TW200723905A (en) 2007-06-16
TWI334739B true TWI334739B (en) 2010-12-11

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Application Number Title Priority Date Filing Date
TW095128939A TWI334739B (en) 2002-08-07 2003-08-05 Closed loop transmit diversity of point to multipoint physical channels
TW092214220U TWM240732U (en) 2002-08-07 2003-08-05 Base station using closed loop transmit diversity of point to multipoint physical channels
TW093110031A TWI339034B (en) 2002-08-07 2003-08-05 Closed loop transmit diversity of point to multipoint physical channels
TW092121434A TWI252644B (en) 2002-08-07 2003-08-05 Closed loop transmit diversity of point to multipoint physical channels

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TW092214220U TWM240732U (en) 2002-08-07 2003-08-05 Base station using closed loop transmit diversity of point to multipoint physical channels
TW093110031A TWI339034B (en) 2002-08-07 2003-08-05 Closed loop transmit diversity of point to multipoint physical channels
TW092121434A TWI252644B (en) 2002-08-07 2003-08-05 Closed loop transmit diversity of point to multipoint physical channels

Country Status (10)

Country Link
US (1) US7181176B2 (zh)
EP (1) EP1527634A4 (zh)
KR (3) KR20040014326A (zh)
CN (1) CN2686249Y (zh)
AR (1) AR040815A1 (zh)
AU (1) AU2003261376A1 (zh)
DE (1) DE20312161U1 (zh)
HK (1) HK1057970A2 (zh)
TW (4) TWI334739B (zh)
WO (1) WO2004016006A1 (zh)

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WO2010095824A2 (ko) * 2009-02-20 2010-08-26 (주)엘지전자 조정 다지점 송신을 통한 데이터 통신 방법 및 장치
US11569886B2 (en) * 2019-04-01 2023-01-31 Qualcomm Incorporated Network-sensitive transmit diversity scheme

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Publication number Publication date
KR200331916Y1 (ko) 2003-10-30
KR20040014326A (ko) 2004-02-14
TW200723905A (en) 2007-06-16
TW200412743A (en) 2004-07-16
US7181176B2 (en) 2007-02-20
DE20312161U1 (de) 2003-12-11
KR20040014373A (ko) 2004-02-14
EP1527634A1 (en) 2005-05-04
HK1057970A2 (en) 2004-04-08
TWI252644B (en) 2006-04-01
AU2003261376A1 (en) 2004-02-25
EP1527634A4 (en) 2010-08-25
TWM240732U (en) 2004-08-11
CN2686249Y (zh) 2005-03-16
AR040815A1 (es) 2005-04-20
TW200509707A (en) 2005-03-01
US20040097200A1 (en) 2004-05-20
WO2004016006A1 (en) 2004-02-19
TWI339034B (en) 2011-03-11

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