KR100754058B1 - 선택적인 채널 전송을 사용하는 다중-채널 통신시스템에서 전송을 위한 데이터를 처리하기 위한 방법 및장치 - Google Patents
선택적인 채널 전송을 사용하는 다중-채널 통신시스템에서 전송을 위한 데이터를 처리하기 위한 방법 및장치 Download PDFInfo
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Abstract
Description
발명은 일반적으로 데이터 통신에 관한 것으로서, 더 구체적으로는, 선택적인 채널 전송 및 한정된(예를 들면, 균일한) 전송 전력 할당을 사용하는 무선 통신 시스템에서 전송을 위한 데이터를 처리하기 위한 기술에 관한 것이다.
수신 SNR 범위 | 정보 비트/심벌의 # | 변조 심벌 | 코딩된 비트/심벌의 # | 코딩율 |
1.5-4.4 | 1 | QPSK | 2 | 1/2 |
4.4-6.4 | 1.5 | QPSK | 2 | 3/4 |
6.4-8.35 | 2 | 16-QAM | 4 | 1/2 |
8.35-10.4 | 2.5 | 16-QAM | 4 | 5/8 |
10.4-12.3 | 3 | 16-QAM | 4 | 3/4 |
12.3-14.15 | 3.5 | 64-QAM | 6 | 7/12 |
14.15-15.55 | 4 | 64-QAM | 6 | 2/3 |
15.55-17.35 | 4.5 | 64-QAM | 6 | 3/4 |
>17.35 | 5 | 64-QAM | 6 | 5/6 |
Claims (40)
- 다중-채널 통신 시스템에서 다수의 전송 채널을 통한 전송을 위해 데이터를 처리하는 방법으로서,데이터 전송에 이용 가능한 다수의 전송 채널의 특성을 추정하는 단계;상기 다수의 전송 채널을 하나 이상의 전송 채널 그룹으로 분류하는 단계 - 상기 각각의 전송 채널 그룹은 특정 코딩 및 변조 방식과, 상기 하나 이상의 전송 채널 그룹에 대하여 데이터 전송에 사용하기 위한 전송 채널들을 선택하는데 사용되는 특정 임계값에 관련됨 -; 및상기 각각의 전송 채널 그룹에 대해,상기 추정된 채널 특성 및 상기 각각의 전송 채널 그룹에 관련된 특정 임계값에 기초하여 데이터 전송에 사용할 하나 이상의 전송 채널을 선택하는 단계;정의된 할당 방식에 따라 상기 전송 채널 그룹에 이용 가능한 모든 전송 전력을 상기 선택된 하나 이상의 전송 채널 사이에 할당하는 단계;상기 각각의 전송 채널 그룹과 관련된 특정 코딩 및 변조 방식에 따라 상기 선택된 하나 이상의 전송 채널에 대한 데이터를 코딩 및 변조하는 단계; 및상기 할당된 전송 전력에 기초하여 상기 선택된 각각의 전송 채널에 대해 상기 코딩 및 변조된 데이터를 전송하는 단계를 포함하는, 데이터 처리 방법.
- 제1항에 있어서, 상기 각각의 전송 채널 그룹에 이용 가능한 모든 전송 전력은 상기 전송 채널 그룹 내 선택된 하나 이상의 전송 채널 사이에 동일하게 할당되는 데이터 처리 방법.
- 제1항에 있어서, 상기 각각의 전송 채널 그룹에 이용 가능한 모든 전송 전력은 상기 전송 채널 그룹 내 선택된 하나 이상의 전송 채널 사이에 불균일하게 할당되는 데이터 처리 방법.
- 제3항에 있어서, 상기 전송 채널 그룹의 선택된 전송 채널들에 대한 전송 전력은 상기 전송 채널 그룹의 상기 선택된 전송 채널들 각각의 바람직한 성능을 기초로 할당되는 데이터 처리 방법.
- 제1항에 있어서, 상기 각각의 전송 채널 그룹 내 하나 이상의 전송 채널은 상기 정의된 할당 방식에 따라 할당된 모든 전송 전력으로 달성될 수 있는 성능에 부분적으로 기초하여 선택되는 데이터 처리 방법.
- 제1항에 있어서, 상기 각각의 전송 채널 그룹에 대한 데이터를 코딩한 후 인터리빙 방식에 따라 상기 각각의 전송 채널 그룹에 대한 데이터를 인터리빙하는 단계를 더 포함하는 데이터 처리 방법.
- 제6항에 있어서, 상기 각각의 전송 채널 그룹에 대한 데이터는 상기 전송 채널 그룹 내의 선택된 모든 전송 채널에 대해 인터리빙되는 데이터 처리 방법.
- 삭제
- 삭제
- 제1항에 있어서, 상기 각각의 전송 채널 그룹에 대한 특정 임계값은 특정한 목표 수신 신호-대-잡음과 간섭 합의 비(SNR)인 데이터 처리 방법.
- 제1항에 있어서, 상기 각각의 전송 채널 그룹에 대한 특정 코딩 및 변조 방식은 다수의 가능한 코딩 및 변조 방식 중에서 선택되는 데이터 처리 방법.
- 제1항에 있어서, 상기 다중-채널 통신 시스템은 직교 주파수 분할 변조(OFDM) 시스템이며, 상기 다수의 전송 채널은 다수의 주파수 서브채널에 대응하는 데이터 처리 방법.
- 제1항에 있어서, 상기 다중-채널 통신 시스템은 다중-입력 다중-출력(MIMO) 통신 시스템이며, 상기 다수의 전송 채널은 MIMO 채널의 다수의 공간 서브채널에 대응하는 데이터 처리 방법.
- 제13항에 있어서, 상기 MIMO 통신 시스템은 OFDM을 사용하며, 상기 다수의 전송 채널은 다수의 주파수 서브채널의 다수의 공간 서브채널에 대응하는 데이터 처리 방법.
- 제14항에 있어서, 상기 각각의 전송 채널 그룹은 각각의 전송 안테나에 대응하며, 다수의 주파수 서브채널에 대응하는 다수의 전송 채널을 포함하는 데이터 처리 방법.
- 제1항에 있어서, 상기 추정된 채널 특성은 채널 이득인 데이터 처리 방법.
- 제16항에 있어서, 상기 특정 임계값은 특정 전력 이득 임계값을 포함하며, 상기 전력 이득은 상기 채널 이득으로부터 유도되는 데이터 처리 방법.
- 제1항에 있어서, 상기 추정된 채널 특성은 수신 신호-대-잡음과 간섭 합의 비(SNR)인 데이터 처리 방법.
- 제18항에 있어서, 상기 특정 임계값은 특정 SNR 임계값을 포함하며, 상기 각각의 전송 채널 그룹에 대해, 상기 특정 SNR 임계값과 같거나 큰 SNR을 가진 전송 채널이 선택되는 데이터 처리 방법.
- 다중-채널 통신 시스템에서 데이터 전송을 제어하는 방법으로서,다수의 전송 채널을 통해 송신기로부터의 다수의 전송을 수신하는 단계;상기 수신된 전송에 기초하여 상기 다수의 전송 채널의 특성을 추정하는 단계;상기 추정된 채널 특성에 기초하여 데이터 전송에 사용될 하나 이상의 전송 채널 및 대응하는 코딩 및 변조 방식을 선택하는 단계; 및상기 선택된 하나 이상의 전송 채널 및 대응하는 코딩 및 변조 방식을 지시하는 채널 상태 정보(CSI)를 상기 송신기로 송신하는 단계를 포함하며, 상기 다수의 전송 채널에 이용 가능한 모든 전송 전력이 정의된 할당 방식에 따라 상기 선택된 하나 이상의 전송 채널 사이에 할당되며, 상기 할당된 전송 전력에 기초하여 각각의 선택된 전송 채널을 통해 데이터가 전송되는, 데이터 전송 제어 방법.
- 제20항에 있어서, 상기 정의된 할당 방식은 상기 선택된 하나 이상의 전송 채널 사이에 상기 모든 전송 전력을 균일하게 분배하는 데이터 전송 제어 방법.
- 제20항에 있어서, 상기 CSI는 상기 선택된 하나 이상의 전송 채널을 식별하기 위한 채널 마스크를 포함하는 데이터 전송 제어 방법.
- 제20항에 있어서, 상기 CSI는 상기 선택된 하나 이상의 전송 채널에 사용될 특정 데이터율을 식별하는 데이터 전송 제어 방법.
- 제20항에 있어서, 상기 CSI는 이전에 송신된 CSI 이후의 변화를 식별하는 차동 지시자를 포함하는 데이터 전송 제어 방법.
- 다중-채널 통신 시스템에서, 데이터 전송에 사용하기 위한 전송 채널을 선택하는 방법으로서,코드율 세트 - 상기 각각의 코드율은 전송 전에 데이터를 코딩하기 위해 선택됨 - 를 정의하는 단계;세트포인트 세트 - 상기 각각의 세트포인트는 각각의 코드율에 대응하며, 해당 코드율로 특정 레벨의 성능에 요구되는 목표 신호-대-잡음과 간섭 합의 비(SNR)를 지시함 - 를 정의하는 단계;각각의 코드율에 대해,데이터 전송에 사용할 수 있는 하나 이상의 전송 채널을 식별하는 단계 - 상기 식별된 하나 이상의 전송 채널은 정의된 할당 방식에 따라 상기 식별된 하나 이상의 전송 채널에 모든 이용 가능한 전송 전력이 분배될 때 상기 코드율에 대응하는 세트포인트를 획득함 - ; 및데이터 전송에 사용할 하나 이상의 성능 기준에 따라 최고 성능을 가진 코드율과 관련된 상기 식별된 전송 채널들을 선택하는 단계를 포함하는, 전송 채널 선택 방법.
- 제25항에 있어서, 상기 정의된 할당 방식은 상기 식별된 전송 채널들 사이에 상기 모든 이용 가능한 전송 전력을 균일하게 분배하는 전송 채널 선택 방법.
- 제25항에 있어서, 상기 각각의 코드율에 대한 성능 메트릭이 상기 식별된 전송 채널들에 의해 획득될 수 있는 전체 처리량인 전송 채널 선택 방법.
- 다중-채널 통신 시스템의 송신기 유닛으로서,데이터 전송을 위한 사용에 이용 가능한 다수의 전송 채널에 대한 채널 상태 정보(CSI)를 수신하며, 상기 이용 가능한 전송 채널들을 하나 이상의 그룹으로 분류하며 - 상기 각각의 그룹은 데이터 전송에 사용하기 위해 상기 각각의 그룹에서 전송 채널들을 선택하는데 사용되는 특정 임계값과 특정 코딩 및 변조 방식에 관련됨 -, 상기 수신된 CSI에 기초하여 각각의 그룹에서 데이터 전송에 사용할 하나 이상의 이용 가능한 전송 채널을 선택하도록 동작하는 제어기; 및상기 제어기에 결합되며, 변조 심벌을 제공하기 위해 특정 코딩 및 변조 방식에 기초하여 각각의 그룹에 대한 데이터를 수신, 코딩 및 변조하며, 정의된 할당 방식에 따라 상기 그룹 내에서 선택된 하나 이상의 전송 채널 사이에 각각의 그룹에 이용 가능한 모든 전송 전력을 분배하며, 상기 할당된 전송 전력에 기초하여 각각의 선택된 전송 채널에 대한 변조 심벌을 전송하는 송신 데이터 처리기를 포함하는, 송신기 유닛.
- 제28항에 있어서, 상기 정의된 할당 방식은 상기 그룹 내의 선택된 하나 이상의 전송 채널 사이에 각각의 그룹에 대한 모든 이용 가능한 전송 전력을 균일하게 분배하는 송신기 유닛.
- 제28항에 있어서,상기 송신 데이터 프로세서에 결합되며, 상기 변조 심벌을 수신하여, 상기 변조 심벌을 송신하는데 사용되는 각각의 안테나마다 하나씩, 하나 이상의 심벌 스트림으로 디멀티플렉싱하도록 동작하는 송신 채널 프로세서를 더 포함하는 송신기 유닛.
- 제30항에 있어서, 상기 송신 채널 프로세서는 상기 수신된 CSI에 기초하여 상기 변조 심벌을 사전 조절하도록 동작하는 송신기 유닛.
- 다중-채널 통신 시스템의 수신기 유닛으로서,다수의 전송 채널을 통해 수신된 다수의 전송을 처리하고, 상기 처리된 전송에 기초하여 상기 다수의 전송 채널의 특성을 추정하도록 동작하는 수신 데이터 프로세서;상기 수신 데이터 프로세서에 결합되며, 상기 추정된 채널 특성에 기초하여 데이터 전송에 사용하기 위한 하나 이상의 전송 채널을 선택하도록 동작하는 제어기; 및상기 제어기에 결합되며, 상기 선택된 하나 이상의 전송 채널을 지시하는 상기 다수의 전송 채널에 대한 채널 상태 정보(CSI)를 송신하도록 동작하는 송신 데이터 프로세서를 포함하며,상기 다수의 전송 채널에 이용 가능한 모든 전송 전력은 정의된 할당 방식에 따라 상기 선택된 하나 이상의 전송 채널 사이에 할당되며, 상기 할당된 전송 전력에 기초하여 각각의 선택된 전송 채널을 통해 상기 수신기 유닛에 데이터가 전송되는, 수신기 유닛.
- 제32항에 있어서, 상기 정의된 할당 방식은 상기 선택된 하나 이상의 선택된 전송 채널 사이에 상기 이용 가능한 모든 전송 전력을 균일하게 분배하는 수신기 유닛.
- 제28항에 있어서, 상기 정의된 할당 방식은 상기 그룹 내의 선택된 하나 이상의 전송 채널 사이에 각각의 그룹에 대한 이용 가능한 모든 전송 전력을 불균일하게 분배하는 송신기 유닛.
- 제28항에 있어서, 상기 정의된 할당 방식은 상기 그룹 내의 선택된 하나 이상의 전송 채널에 대한 바람직한 성능을 기초로 상기 이용 가능한 모든 전력을 분배하는 송신기 유닛.
- 제28항에 있어서, 상기 전송 채널들의 각각의 그룹 내 하나 이상의 전송 채널은 상기 정의된 할당 방식에 따라 할당된 모든 전송 전력으로 달성될 수 있는 성능에 부분적으로 기초하여 선택되는 송신기 유닛.
- 제28항에 있어서, 상기 각각의 그룹에 대한 특정 임계값은 특정한 목표 수신 신호-대-잡음과 간섭 합의 비(SNR)인 송신기 유닛.
- 제28항에 있어서, 상기 특정 임계값은 특정 전력 이득 임계값인 송신기 유닛.
- 제28항에 있어서, 상기 추정된 채널 특성은 수신 신호-대-잡음과 간섭 합의 비(SNR)인 송신기 유닛.
- 삭제
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DE60211705T2 (de) | 2007-01-11 |
JP5490405B2 (ja) | 2014-05-14 |
JP2011182417A (ja) | 2011-09-15 |
US6751187B2 (en) | 2004-06-15 |
EP1410526A1 (en) | 2004-04-21 |
JP5579647B2 (ja) | 2014-08-27 |
JP2004531980A (ja) | 2004-10-14 |
BRPI0210656B1 (pt) | 2016-12-20 |
ATE327599T1 (de) | 2006-06-15 |
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