KR20010102505A - 고성능 코딩을 가능케 하는 멀티플렉서된 cdma채널들에서의 순방향 에러 정정 - Google Patents
고성능 코딩을 가능케 하는 멀티플렉서된 cdma채널들에서의 순방향 에러 정정 Download PDFInfo
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- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
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- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
- H04L1/1816—Hybrid protocols; Hybrid automatic repeat request [HARQ] with retransmission of the same, encoded, message
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- H—ELECTRICITY
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- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
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- H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
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- H—ELECTRICITY
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- H04L1/00—Arrangements for detecting or preventing errors in the information received
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- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
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- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1809—Selective-repeat protocols
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
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- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
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Abstract
Description
Claims (12)
- 송신기 및 수신기 사이에서 하나 또는 그 이상의 통신 채널을 통해 데이타를 통신하는 방법으로서, 상기 데이타는 프레임 형태로 제공되고, 상기 방법은송신기에서(a) 최적 세그먼트 사이즈에 따라 상기 프레임을 세그먼트들로 분할하는 단계;(b) 다중 세그먼트들을 세그먼트 블록으로 결합하는 단계;(c) 순방향 에러 정정 블록을 형성하기 위해 상기 세그먼트 블록에 순방향 에러 정정 인코딩 처리를 적용하는 단계; 및(d) 통신 채널을 통해 상기 순방향 에러 정정 블록을 전송하는 단계를 포함하며,수신기에서(e) 수신 블록을 형성하기 위해 상기 순방향 에러 정정 블록에 순방향 에러 정정 디코딩을 적용하는 단계;(f) 상기 수신 블록을 세그먼트들로 분할하는 단계;(g) 어떤 세그먼트들이 에러 상태로 수신되었는지를 결정하는 단계; 및(h) 에러 상태로 수신된 세그먼트만의 재전송을 요청하는 단계를 포함하는 데이타 통신 방법.
- 제1항에 있어서,송신기에서(i) 수신기에서 에러 상태로 수신된 세그먼트들을 식별하기 위해 검사합(checksum)을 상기 세그먼트들에 삽입하는 단계를 추가로 포함하는 데이타 통신 방법.
- 제1항에 있어서,상기 단계(b)는 송신기에서(j) 프레임 내의 세그먼트의 위치를 식별하기 위해 위치 번호를 상기 세그먼트들에 삽입하는 단계를 추가로 포함하는 데이타 통신 방법.
- 제1항에 있어서,상기 단계(d)는 다중 개별 통신 채널들 상에서 상기 순방향 에러 정정 블록을 전송하는 것을 추가로 포함하는 데이타 통신 방법.
- 제1항에 있어서,수신기에서(k) 에러 상태로 수신된 세그먼트들의 수를 결정하는 단계; 및(l) 채널 상에서 통신이 시도된 상기 에러 상태 수신 세그먼트들의 수에 따라 상기 통신 채널에 가장 적합한 세그먼트의 사이즈를 결정하는 단계를 포함하는데이타 통신 방법.
- 제5항에 있어서,상기 단계들 (k) 및 (l)은 추가로 각 채널에서 에러율을 결정하는 단계 및 각 채널 개별적으로 최적 세그먼트들의 수를 결정하는 단계를 포함하는 데이타 통신 방법.
- 제5항에 있어서,상기 단계(k)는 송신기에서 만들어진 선택적 거절 명령들의 수를 카운트함으로써 수신기에서 에러 상태로 수신된 세그먼트들의 수를 결정하는 데이타 통신 방법.
- 제1항에 있어서,상기 단계(k)는 정확하게 수신된 세그먼트들의 수에 대한 에러 상태로 수신된 세그먼트들의 수의 비율에 따라 최적 프레임들의 수를 결정하는 데이타 통신 방법.
- 제1항에 있어서,상기 단계(k)는 다음 공식;X=-H +으로부터 프레임의 조정된 데이타 바이트들의 수를 결정하는 단계를 추가로 포함하며, 여기서 XCURRENT는 프레임의 현재 데이타 바이트의 수이고, HCURRENT는 바이트들의 현재 프레임 오버헤드이고, H는 바이트들의 프레임에 대한 새로운 오버헤드이며, R은 정확하게 수신된 세그먼트에 대한 에러 상태로 수신된 세그먼트들의 비율인 데이타 통신 방법.
- 디지탈 신호들의 무선 통신을 제공하는 방법으로서, 상기 디지탈 신호들은 복수의 무선 가입자 유닛 및 기지국 사이에서 통신되고, 상기 디지탈 신호들은 적어도 하나의 무선 주파수 채널을 사용하여 코드 분할 다중 접속(CDMA) 변조된 무선 신호를 통해 통신되며, 상기 디지탈 신호들은 주어진 공칭 데이타율을 가지고 있으며, 상기 방법은(a) 각 CDMA 무선 채널 내에 복수의 서브 채널을 제공하는 단계로서, 각 서브 채널의 데이타율은 상기 디지탈 신호들의 공칭 데이타율 보다 작은 단계;(b) 가입자 유닛과 연결된 단말 장치 및 기지국과 연결된 다른 단말 장치 사이에 네트워크 계층 세션을 설정하는 단계;(c) 네트워크 계층 세션동안, 필요에 따라 주어진 세션기간동안 변화하는 할당된 서브 채널의 수로 이용 가능한 서브 채널들의 수를 할당하는 단계;(d) 최적 세그먼트 사이즈에 따라 네트워크 계층 프레임을 세그먼트들로 분할하는 단계;(e) 다중 세그먼트들을 세그먼트 블록으로 결합하는 단계;(f) 순방향 에러 정정 블록을 형성하기 위해 순방향 에러 정정 인코딩 처리를 상기 세그먼트 블록에 적용하는 단계;(g) 수신기에서, 상기 순방향 에러 정정 블록을 디코딩하고, 다시 세그먼트들로 분할하는 단계; 및(h) 에러 상태로 수신된 세그먼트만의 재전송을 요청하는 단계를 포함하는 방법.
- 제10항에 있어서(i) 서브 채널들 상에서의 통신이 시도된 에러 상태 수신 세그먼트들의 결정된 수에 따라 상기 서브 채널에 대한 최적 세그먼트 사이즈를 결정하는 단계를 추가로 포함하는 방법.
- 제10항에 있어서,상기 단계(i)는 채널의 프레임 사이즈를 다이나믹하게 조절하는 단계를 추가로 포함하여 프레임 오버헤드 및 재전송을 포함하는 정보를 전달하기 위해 실제로 사용된 비트들의 수에 대한 실제 전송 데이타의 비율에 따라 전체 시스템의 효과적인 처리량을 최적화하는 방법.
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US09/263,358 US7593380B1 (en) | 1999-03-05 | 1999-03-05 | Variable rate forward error correction for enabling high performance communication |
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KR100884943B1 (ko) * | 2007-03-19 | 2009-02-23 | 삼성전자주식회사 | 데이터 전송 방법 및 데이터 전송 시스템 |
KR100926669B1 (ko) * | 2009-04-01 | 2009-11-17 | 인하대학교 산학협력단 | 소거 회복 코드를 이용한 데이터 전송 시스템 |
WO2013109113A1 (ko) * | 2012-01-20 | 2013-07-25 | 삼성전자 주식회사 | 스트리밍 서비스를 제공하는 방법 및 장치 |
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US7593380B1 (en) * | 1999-03-05 | 2009-09-22 | Ipr Licensing, Inc. | Variable rate forward error correction for enabling high performance communication |
US6973140B2 (en) | 1999-03-05 | 2005-12-06 | Ipr Licensing, Inc. | Maximizing data rate by adjusting codes and code rates in CDMA system |
US6614776B1 (en) | 1999-04-28 | 2003-09-02 | Tantivy Communications, Inc. | Forward error correction scheme for high rate data exchange in a wireless system |
US7933249B2 (en) * | 2000-02-08 | 2011-04-26 | Ipr Licensing, Inc. | Grade of service and fairness policy for bandwidth reservation system |
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