BR0000988A - Médoto para operar um sistema sem fio de acesso múltiplo de espectro disperso baseado em multiplexagem de divisão de frequência ortogonal - Google Patents
Médoto para operar um sistema sem fio de acesso múltiplo de espectro disperso baseado em multiplexagem de divisão de frequência ortogonalInfo
- Publication number
- BR0000988A BR0000988A BR0000988-1A BR0000988A BR0000988A BR 0000988 A BR0000988 A BR 0000988A BR 0000988 A BR0000988 A BR 0000988A BR 0000988 A BR0000988 A BR 0000988A
- Authority
- BR
- Brazil
- Prior art keywords
- delta
- adjacent
- base station
- cell
- offset
- Prior art date
Links
Classifications
-
- 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
- H04L5/02—Channels characterised by the type of signal
- H04L5/023—Multiplexing of multicarrier modulation signals
- H04L5/026—Multiplexing of multicarrier modulation signals using code division
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2628—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA]
- H04B7/2634—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA] for channel frequency control
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mobile Radio Communication Systems (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Spectrometry And Color Measurement (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Feedback Control In General (AREA)
Abstract
<B>MéTODO PARA OPERAR UM SISTEMA SEM FIO DE ACESSO MúLTIPLO DE ESPECTRO DISPERSO BASEADO EM MULTIPLEXAGEM DE DIVISãO DE FREQuêNCIA ORTOGONAL<D> é revelado um sistema sem fio de acesso múltiplo de espectro disperso baseado em multiplexagem de divisão de freq³ência ortogonal (OFDM) usando deslocamento entre células e, em particular, o uso de deslocamento de tom e deslocamento de tempo. Mais especificamente, as freq³ências que definem o conjunto de tons de uma célula são deslocadas das freq³ências que definem o conjunto de tons de, pelo menos, uma célula adjacente. Em outras palavras, se uma primeira estação-base estiver usando tons F~ 1~, F~ 2~, ..., F~ N~ dentro de uma faixa de freq³ência, então, uma segunda estação-base adjacente à primeira estação-base usará tons F~ 1~+<30>f,F~ 2~+<30>f..., F~ N~+<30>f dentro da mesma faixa de freq³ência. Além disso, o sincronismo de símbolo da estação-base de uma célula pode ser deslocado do sincronismo de símbolo da estação-base da célula adjacente. Assim, se uma primeira estação-base iniciar símbolos sucessivos nos tempos T1, T2 e T3, então, uma segunda estação-base adjacente à primeira estação-base iniciará seus respectivos símbolos sucessivos correspondentes nos tempos T1+<30>t, T2+<30>t e T3+<30>t. Por exemplo, em um sistema celular com células em forma hexagonal, os conjuntos de tons de duas células adjacentes são deslocados em 1/3 do espaçamento entre os tons adjacentes e os sincronismos de símbolos de duas células adjacentes são deslocados em 1/3 de um período de símbolo. De modo vantajoso, a interferência intercelular é mais uniformemente distribuída dentre usuários em uma célula.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/266,370 US6711120B1 (en) | 1999-03-11 | 1999-03-11 | Orthogonal frequency division multiplexing based spread spectrum multiple access |
Publications (1)
Publication Number | Publication Date |
---|---|
BR0000988A true BR0000988A (pt) | 2000-10-17 |
Family
ID=23014287
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR0000988-1A BR0000988A (pt) | 1999-03-11 | 2000-03-01 | Médoto para operar um sistema sem fio de acesso múltiplo de espectro disperso baseado em multiplexagem de divisão de frequência ortogonal |
Country Status (12)
Country | Link |
---|---|
US (1) | US6711120B1 (pt) |
EP (1) | EP1039684B1 (pt) |
JP (1) | JP3703003B2 (pt) |
KR (1) | KR100804854B1 (pt) |
CN (1) | CN1235358C (pt) |
AT (1) | ATE230533T1 (pt) |
AU (1) | AU770983B2 (pt) |
BR (1) | BR0000988A (pt) |
CA (1) | CA2298361C (pt) |
DE (1) | DE60001081T2 (pt) |
ES (1) | ES2189725T3 (pt) |
ID (1) | ID26302A (pt) |
Families Citing this family (45)
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US6396817B2 (en) * | 1998-08-31 | 2002-05-28 | Qualcomm Incorporated | Signal splitting method for limiting peak power in a CDMA system |
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US7548875B2 (en) | 2001-06-27 | 2009-06-16 | John Mikkelsen | Media delivery platform |
EP3567922A1 (en) | 2001-08-14 | 2019-11-13 | QUALCOMM Incorporated | Method and apparatus for wireless network connectivity |
US7248559B2 (en) | 2001-10-17 | 2007-07-24 | Nortel Networks Limited | Scattered pilot pattern and channel estimation method for MIMO-OFDM systems |
EP1335518B1 (en) * | 2002-01-31 | 2005-11-09 | Motorola, Inc. | Reception of multicarrier spread-spectrum signals |
US7366223B1 (en) * | 2002-06-06 | 2008-04-29 | Arraycomm, Llc | Modifying hopping sequences in wireless networks |
US6993333B2 (en) * | 2003-10-16 | 2006-01-31 | Flarion Technologies, Inc. | Methods and apparatus of improving inter-sector and/or inter-cell handoffs in a multi-carrier wireless communications system |
US6985498B2 (en) * | 2002-08-26 | 2006-01-10 | Flarion Technologies, Inc. | Beacon signaling in a wireless system |
US7388845B2 (en) * | 2002-08-26 | 2008-06-17 | Qualcomm Incorporated | Multiple access wireless communications system using a multisector configuration |
US7366200B2 (en) * | 2002-08-26 | 2008-04-29 | Qualcomm Incorporated | Beacon signaling in a wireless system |
US7133354B2 (en) * | 2002-08-26 | 2006-11-07 | Qualcomm Incorporated | Synchronization techniques for a wireless system |
US7068703B2 (en) * | 2003-02-18 | 2006-06-27 | Qualcomm, Incorporated | Frequency hop sequences for multi-band communication systems |
US6999467B2 (en) * | 2003-07-28 | 2006-02-14 | Motorola, Inc. | Method and apparatus for transmission and reception within an OFDM communication system |
CN100586213C (zh) * | 2003-12-19 | 2010-01-27 | 艾利森电话股份有限公司 | 用于最小化数据传输***中的小区内干扰的方法 |
US7395495B2 (en) * | 2004-01-12 | 2008-07-01 | Intel Corporation | Method and apparatus for decoding forward error correction codes |
CN102064848B (zh) | 2004-01-29 | 2012-07-25 | 桥扬科技有限公司 | 用于多小区宽带无线***中的移动站和基站的方法和装置 |
KR100713528B1 (ko) * | 2004-03-12 | 2007-05-02 | 삼성전자주식회사 | 직교 주파수 분할 다중 접속 방식을 사용하는 통신시스템에서 서브 채널 신호 송신 장치 및 방법 |
KR100739511B1 (ko) * | 2004-06-25 | 2007-07-13 | 삼성전자주식회사 | 직교 주파수 분할 다중 방식을 사용하는 통신 시스템에서파일럿 신호 송수신 장치 및 방법 |
KR100640581B1 (ko) * | 2004-07-02 | 2006-10-31 | 삼성전자주식회사 | 상향 링크 통신시 엑세스 사용자의 주파수 옵셋을제어하는 직교 주파수 분할 다중 접속 시스템 및 주파수옵셋 제어 방법 |
US7263335B2 (en) * | 2004-07-19 | 2007-08-28 | Purewave Networks, Inc. | Multi-connection, non-simultaneous frequency diversity in radio communication systems |
US7379446B2 (en) * | 2004-10-14 | 2008-05-27 | Qualcomm Incorporated | Enhanced beacon signaling method and apparatus |
US7715845B2 (en) | 2004-10-14 | 2010-05-11 | Qualcomm Incorporated | Tone hopping methods and apparatus |
US7489983B2 (en) * | 2004-11-03 | 2009-02-10 | Emhart Glass S.A. | Control for an I.S. machine |
KR100635013B1 (ko) * | 2004-12-03 | 2006-10-16 | 한국전자통신연구원 | 다중 셀 환경에서의 동기식 ofdm 수신 장치 및 그방법 |
EP1820314A4 (en) * | 2004-12-08 | 2013-01-09 | Korea Electronics Telecomm | TRANSMITTER AND ASSOCIATED FREQUENCY HOPPING METHOD |
KR100612045B1 (ko) * | 2004-12-08 | 2006-08-14 | 한국전자통신연구원 | 인접 셀 간의 간섭을 억제하기 위한 기지국 제어 방법 |
KR100709691B1 (ko) * | 2004-12-08 | 2007-04-19 | 한국전자통신연구원 | 송신기 및 송신기의 주파수 도약 방법 |
US8537760B2 (en) * | 2004-12-17 | 2013-09-17 | Samsung Electronics Co., Ltd | Method and system for dynamic hybrid multiple access in an OFDM-based wireless network |
US8351405B2 (en) * | 2006-07-14 | 2013-01-08 | Qualcomm Incorporated | Method and apparatus for signaling beacons in a communication system |
CN101047683B (zh) * | 2006-05-16 | 2011-06-15 | 华为技术有限公司 | 一种无线信号发射/接收方法及发射/接收装置 |
AU2006352573B2 (en) * | 2006-12-28 | 2011-02-10 | Fujitsu Limited | Transmitting device and receiving device in cellular system |
RU2446586C2 (ru) * | 2006-12-28 | 2012-03-27 | Фудзицу Лимитед | Передающее устройство и приемное устройство в системе сотовой связи |
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CN101932140A (zh) * | 2009-06-22 | 2010-12-29 | 华为技术有限公司 | 一种调整无线帧发送时间的方法及基站 |
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US8582527B2 (en) | 2011-07-01 | 2013-11-12 | Ofinno Technologies, Llc | Hybrid automatic repeat request in multicarrier systems |
WO2013006379A1 (en) | 2011-07-01 | 2013-01-10 | Dinan Esmael Hejazi | Synchronization signal and control messages in multicarrier ofdm |
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US9497756B2 (en) | 2012-03-25 | 2016-11-15 | Comcast Cable Communications, Llc | Base station radio resource management |
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JP7351787B2 (ja) | 2020-04-01 | 2023-09-27 | 株式会社スマート・ソリューション・テクノロジー | 通信装置、通信方法及びプログラム |
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US5410538A (en) | 1993-11-09 | 1995-04-25 | At&T Corp. | Method and apparatus for transmitting signals in a multi-tone code division multiple access communication system |
US6185246B1 (en) * | 1994-09-21 | 2001-02-06 | Qualcomm Incorporated | System and method for orthogonal spread spectrum sequence generation in variable data rate systems |
US5623487A (en) * | 1995-05-19 | 1997-04-22 | Stanford Telecommunications, Inc. | Doubly orthogonal code and frequency division multiple access communication system |
US6067292A (en) * | 1996-08-20 | 2000-05-23 | Lucent Technologies Inc | Pilot interference cancellation for a coherent wireless code division multiple access receiver |
JP3282518B2 (ja) | 1996-09-25 | 2002-05-13 | ケイディーディーアイ株式会社 | スペクトラム拡散通信方式 |
US6222828B1 (en) * | 1996-10-30 | 2001-04-24 | Trw, Inc. | Orthogonal code division multiple access waveform format for use in satellite based cellular telecommunications |
US6320917B1 (en) * | 1997-05-02 | 2001-11-20 | Lsi Logic Corporation | Demodulating digital video broadcast signals |
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US6317412B1 (en) * | 1997-12-12 | 2001-11-13 | Stanford Telecommunications, Inc. | Increased capacity in an OCDMA system for frequency isolation |
US6088416A (en) * | 1998-04-21 | 2000-07-11 | Trw Inc. | Method for reducing interference and increasing spectral efficiency |
-
1999
- 1999-03-11 US US09/266,370 patent/US6711120B1/en not_active Expired - Lifetime
-
2000
- 2000-02-11 CA CA002298361A patent/CA2298361C/en not_active Expired - Fee Related
- 2000-02-28 EP EP00301560A patent/EP1039684B1/en not_active Expired - Lifetime
- 2000-02-28 ES ES00301560T patent/ES2189725T3/es not_active Expired - Lifetime
- 2000-02-28 DE DE60001081T patent/DE60001081T2/de not_active Expired - Lifetime
- 2000-02-28 AT AT00301560T patent/ATE230533T1/de not_active IP Right Cessation
- 2000-03-01 AU AU19566/00A patent/AU770983B2/en not_active Ceased
- 2000-03-01 BR BR0000988-1A patent/BR0000988A/pt not_active IP Right Cessation
- 2000-03-06 ID IDP20000169D patent/ID26302A/id unknown
- 2000-03-10 KR KR1020000012069A patent/KR100804854B1/ko not_active IP Right Cessation
- 2000-03-10 JP JP2000067096A patent/JP3703003B2/ja not_active Expired - Fee Related
- 2000-03-10 CN CNB001038680A patent/CN1235358C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
KR20000062825A (ko) | 2000-10-25 |
CA2298361A1 (en) | 2000-09-11 |
JP3703003B2 (ja) | 2005-10-05 |
DE60001081T2 (de) | 2003-10-09 |
DE60001081D1 (de) | 2003-02-06 |
ES2189725T3 (es) | 2003-07-16 |
AU1956600A (en) | 2000-09-14 |
EP1039684A1 (en) | 2000-09-27 |
CN1267151A (zh) | 2000-09-20 |
EP1039684B1 (en) | 2003-01-02 |
US6711120B1 (en) | 2004-03-23 |
CN1235358C (zh) | 2006-01-04 |
AU770983B2 (en) | 2004-03-11 |
ATE230533T1 (de) | 2003-01-15 |
ID26302A (id) | 2000-12-14 |
KR100804854B1 (ko) | 2008-02-20 |
JP2000299681A (ja) | 2000-10-24 |
CA2298361C (en) | 2005-06-07 |
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B25A | Requested transfer of rights approved |
Owner name: QUALCOMM INCORPORATED (US) Free format text: TRANSFERIDO DE: FLARION TECHNOLOGIES, INC. |
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B08F | Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette] |
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B08K | Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette] |
Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2138 DE 27/12/2011. |
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B15K | Others concerning applications: alteration of classification |
Ipc: H04L 5/02 (2006.01) |