IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0261985
(2008-10-30)
|
등록번호 |
US-7787561
(2010-09-20)
|
우선권정보 |
EP-01127244(2001-11-16) |
발명자
/ 주소 |
- Golitschek Edler Von Elbwart, Alexander
- Seidel, Eiko
- Wengerter, Christian
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
4 인용 특허 :
44 |
초록
▼
A hybrid ARQ retransmission method in a communication system, wherein data packets consisting of symbols encoded with a forward error correction (FEC) technique prior to transmission are retransmitted based on an automatic repeat request and subsequently combined with previously received data packet
A hybrid ARQ retransmission method in a communication system, wherein data packets consisting of symbols encoded with a forward error correction (FEC) technique prior to transmission are retransmitted based on an automatic repeat request and subsequently combined with previously received data packets the symbols of said data packets being modulated by a mapping unit employing a predetermined signal constellation. The retransmitted data packets being retransmitted in form of a selected one of a plurality of different redundancy versions. According to the invention the transmitted bits of the modulated symbols are reordered over the retransmissions in accordance with the selected redundancy version.
대표청구항
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The invention claimed is: 1. A transmission apparatus for transmitting data using a HARQ process comprising a transmission section that transmits data using one combination of a plurality of combinations, each of the combinations comprising one redundancy version of a plurality of redundancy versio
The invention claimed is: 1. A transmission apparatus for transmitting data using a HARQ process comprising a transmission section that transmits data using one combination of a plurality of combinations, each of the combinations comprising one redundancy version of a plurality of redundancy versions and one constellation version of a plurality of constellation versions, at least one redundancy version of the plurality of redundancy versions being assigned to more than one of the constellation versions. 2. The transmission apparatus according to claim 1, wherein each of the constellation versions defines at least one of (i) bit positions in a bit sequence comprising a plurality of bits and (ii) logical values of the bits. 3. The transmission apparatus according to claim 1, wherein one of the constellation versions is produced by at least one of (i) exchanging a bit with another in a bit sequence comprising a plurality of bits and (ii) inverting a logical value of a bit in the bit sequence. 4. The transmission apparatus according to claim 1, further comprising: a rearranging section that rearranges a bit sequence comprising a plurality of bits according to a constellation version of the one of the combinations, to produce a rearranged bit sequence. 5. The transmission apparatus according to claim 1, further comprising: a rearranging section that operates to at least one of (i) exchange a bit with another in a bit sequence comprising a plurality of bits and (i) invert a logical value of a bit in the bit sequence. 6. The transmission apparatus according to claim 1, wherein said transmitting section (i) transmits first data using one of the combinations and (ii) transmits second data using another of the combinations. 7. The transmission apparatus according to claim 1, wherein said transmission section (i) transmits data using first combination of the combinations and (ii) retransmits data using second combination of the combinations. 8. A transmission method for transmitting data using a HARQ process comprising a step of: transmitting, with a transmitter of a communication apparatus, data using one combination of a plurality of combinations, each of the combinations comprising one redundancy version of a plurality of redundancy versions and one constellation version of a plurality of constellation versions, at least one redundancy version of the plurality of redundancy versions being assigned to more than one of the constellation versions. 9. The transmission method according to claim 8, wherein each of the constellation versions defines at least one of (i) bit positions in a bit sequence comprising a plurality of bits and (ii) logical values of the bits. 10. The transmission method according to claim 8, wherein one of the constellation versions is produced by at least one of (i) exchanging a bit with another in a bit sequence comprising a plurality of bits and (ii) exchanging a logical value of a bit in the bit sequence. 11. The transmission method according to claim 8, further comprising: operating to at least one of (i) exchange a bit with another in a bit sequence comprising a plurality of bits and (ii) invert a logical value of a bit in the bit sequence. 12. The transmission method according to claim 8, wherein the transmitting step transmits data using first combination of the combinations, further comprising a step of: retransmitting data using second combination of the combination. 13. A reception apparatus for receiving data transmitted using a HARQ process comprising: a receiving section that receives data transmitted using one combination of a plurality of combinations, each of the combinations comprising one redundancy version of a plurality of redundancy versions and one constellation version of a plurality of constellation versions, at least one redundancy version of the redundancy versions being assigned to more than one of the constellation versions. 14. The reception apparatus according to claim 13, further comprising: a demodulating section that demodulates the received data. 15. The reception apparatus according to claim 13, wherein each of the constellation versions defines at least one of (i) bit positions in a bit sequence comprising a plurality of bits and (ii) logical values of the bits. 16. The reception apparatus according to claim 13, wherein one of the constellation versions is produced by at least one of (i) exchanging a bit with another in a bit sequence comprising a plurality of bits and (ii) inverting a logical value of a bit in the bit sequence. 17. The reception apparatus according to claim 13, further comprising: a rearranging section that operates to at least one of (i) exchange a bit with another in a bit sequence comprising a plurality of bits of the received data and (ii) invert a logical value of a bit in the bit sequence. 18. The reception apparatus according to claim 13, wherein said receiving section (i) receives data transmitted using first combination of the combinations and (ii) receives data retransmitted using second combination of the combinations. 19. A reception method for receiving data transmitted using a HARQ process comprising a step of: receiving, with a receiver of a communication apparatus, data transmitted using one combination of a plurality of combinations, each of the combinations comprising one redundancy version of a plurality of redundancy versions and one constellation version of a plurality of constellation versions, at least one redundancy version of the redundancy versions being assigned to more than one of the constellation versions. 20. The reception method according to claim 19, further comprising: demodulating the received data. 21. The reception method according to claim 19, further comprising: operating to at least one of (i) exchange a bit with another in a bit sequence comprising a plurality of bits of the received data and (ii) invert a logical value of a bit in the bit sequence. 22. The reception method according to claim 19, wherein receiving step receives data transmitted using first combination of the combinations, further comprising a step of: receiving data retransmitted using second combination of the combinations. 23. A transmission system comprising: a transmission apparatus comprising a transmission section that transmits data using one combination of a plurality of combinations, each of the combinations comprising one redundancy version of a plurality of redundancy versions and one constellation version of a plurality of constellation versions, at least one redundancy version of the plurality of redundancy versions being assigned to more than one of the constellation versions, and a reception apparatus comprising a reception section that receives data transmitted by the transmission apparatus.
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