Method for packet transmission with an ARQ protocol on transmission channels in a digital transmission system
US6571366B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2000 |
| Grant date | May 27, 2003 |
| Priority date | — |
| Expiry date | Feb 22, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/6381
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In a method for packet transmission using an ARQ protocol on transmission channels in a digital transmission system, for channel coding, turbo coding is carried out in a turbo coder at the transmitter end and turbo decoding is carried out in a turbo decoder at the receiver end using soft-decision output signals. A return channel is provided, which the receiver uses to request the information from faulty packets once again. An RCPTC is used as the turbo code. When the information in a faulty packet is retransmitted, at least a portion of the information suppressed by the puncturing of the RCPTC in the previous transmission is transmitted. This additional information is inserted into the already existing information at the receiver end, and this completed information is decoded once again. When the repeat transmission is made, the only bits which are transmitted are those which are additionally available at the next lower coding rate, since they are not punctured. The method is repeated, until the packet is decoded without any errors or all of the coded information in a packet is transmitted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.