RU2007108554A - Устройство беспроводной связи и способ беспроводной связи - Google Patents
Устройство беспроводной связи и способ беспроводной связи Download PDFInfo
- Publication number
- RU2007108554A RU2007108554A RU2007108554/09A RU2007108554A RU2007108554A RU 2007108554 A RU2007108554 A RU 2007108554A RU 2007108554/09 A RU2007108554/09 A RU 2007108554/09A RU 2007108554 A RU2007108554 A RU 2007108554A RU 2007108554 A RU2007108554 A RU 2007108554A
- Authority
- RU
- Russia
- Prior art keywords
- threshold value
- quality level
- subcarriers
- feedback period
- radio communication
- Prior art date
Links
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2626—Arrangements specific to the transmitter only
- H04L27/2646—Arrangements specific to the transmitter only using feedback from receiver for adjusting OFDM transmission parameters, e.g. transmission timing or guard interval length
-
- 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
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0026—Transmission of channel quality indication
-
- 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
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
-
- 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
- H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
- H04L5/0046—Determination of how many bits are transmitted on different sub-channels
-
- 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
- H04L5/0058—Allocation criteria
- H04L5/006—Quality of the received signal, e.g. BER, SNR, water filling
Claims (7)
1. Устройство радиосвязи, содержащее:
приемную секцию, которая принимает сигнал с множеством несущих, состоящий из множества поднесущих;
измерительную секцию, которая измеряет уровень качества для каждой поднесущей или каждого сегмента сигнала с множеством несущих;
секцию сравнения, которая сравнивает уровень качества или величину изменения уровня качества с пороговым значением; и
передающую секцию, которая, используя первый период обратной связи, передает информацию CSI или параметры модуляции некоторых поднесущих или некоторых сегментов, у которых уровень качества меньше порогового значения, или некоторых поднесущих или некоторых сегментов, у которых величина изменения превышает пороговое значение, и, используя второй период обратной связи, который больше первого периода обратной связи, передает информацию CSI или параметры модуляции всех поднесущих или всех сегментов.
2. Устройство радиосвязи по п.1, в котором передающая секция передает в качестве информации CSI результат сравнения из секции сравнения.
3. Устройство радиосвязи по п.1, дополнительно содержащее секцию установки, которая устанавливает пороговое значение, используя среднее значение или значение медианы уровней качества множества поднесущих.
4. Устройство радиосвязи по п.1, дополнительно содержащее секцию формирования, которая формирует первый кадр, состоящий из информации CSI или параметров модуляции поднесущей или сегмента, у которого уровень качества превышает пороговое значение, или поднесущей или сегмента, у которого величина изменения меньше порогового значения, и которая формирует второй кадр, состоящий из информации CSI или параметров модуляции поднесущей или сегмента, у которого уровень качества меньше пороговое значения, или поднесущей или сегмента, у которого величина изменения превышает пороговое значение, при этом передающая секция передает первый кадр, используя период обратной связи, являющийся целым кратным периоду обратной связи второго кадра.
5. Терминальное устройство радиосвязи, содержащее устройство радиосвязи по п.1.
6. Устройство базовой станции для радиосвязи, содержащее устройство радиосвязи по п.1.
7. Способ радиосвязи, содержащий:
шаг приема, состоящий в приеме сигнала с множеством несущих, состоящего из множества поднесущих;
шаг измерения, состоящий в измерении уровня качества по каждой поднесущей или каждому сегменту сигнала с множеством несущих;
шаг сравнения, состоящий в сравнении уровня качества или величины изменения уровня качества с пороговым значением; и
шаг передачи, состоящий в передаче информации CSI или параметров модуляции некоторых поднесущих или некоторых сегментов, у которых уровень качества меньше порогового значения, или некоторых поднесущих или некоторых сегментов, у которых величина изменения превышает пороговое значение, с использованием первого периода обратной связи, и передаче информации CSI или параметров модуляции всех поднесущих или всех сегментов с использованием второго периода обратной связи, который больше первого периода обратной связи.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-264606 | 2004-09-10 | ||
JP2004264606 | 2004-09-10 | ||
JP2005246088 | 2005-08-26 | ||
JP2005-246088 | 2005-08-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
RU2007108554A true RU2007108554A (ru) | 2008-09-20 |
Family
ID=36036485
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
RU2007108554/09A RU2007108554A (ru) | 2004-09-10 | 2005-09-09 | Устройство беспроводной связи и способ беспроводной связи |
Country Status (8)
Country | Link |
---|---|
US (1) | US20070298728A1 (ru) |
EP (1) | EP1786129A1 (ru) |
JP (1) | JPWO2006028204A1 (ru) |
KR (1) | KR20070067680A (ru) |
BR (1) | BRPI0515153A (ru) |
CA (1) | CA2579712A1 (ru) |
RU (1) | RU2007108554A (ru) |
WO (1) | WO2006028204A1 (ru) |
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-
2005
- 2005-09-09 EP EP05782327A patent/EP1786129A1/en not_active Withdrawn
- 2005-09-09 KR KR1020077004588A patent/KR20070067680A/ko not_active Application Discontinuation
- 2005-09-09 JP JP2006535838A patent/JPWO2006028204A1/ja not_active Withdrawn
- 2005-09-09 BR BRPI0515153-8A patent/BRPI0515153A/pt not_active IP Right Cessation
- 2005-09-09 RU RU2007108554/09A patent/RU2007108554A/ru not_active Application Discontinuation
- 2005-09-09 CA CA002579712A patent/CA2579712A1/en not_active Abandoned
- 2005-09-09 US US11/574,951 patent/US20070298728A1/en not_active Abandoned
- 2005-09-09 WO PCT/JP2005/016606 patent/WO2006028204A1/ja active Application Filing
Also Published As
Publication number | Publication date |
---|---|
KR20070067680A (ko) | 2007-06-28 |
BRPI0515153A (pt) | 2008-07-08 |
CA2579712A1 (en) | 2006-03-16 |
EP1786129A1 (en) | 2007-05-16 |
WO2006028204A1 (ja) | 2006-03-16 |
US20070298728A1 (en) | 2007-12-27 |
JPWO2006028204A1 (ja) | 2008-05-08 |
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