Retransmission method for HARQ in MIMO systems
US8320486B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 28, 2007 |
| Grant date | Nov 27, 2012 |
| Priority date | — |
| Expiry date | Jul 26, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/0413
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a closed-loop wireless communication system (200), a codeword retransmission scheme is provided which allows retransmission of a single codeword using a higher order transmission rank, which may or may not be the same as the higher order transmission rank used to originally transmit the codeword. When one of a plurality of codewords (CW1, CW2) being transmitted over two codeword pipes to a receiver (201.i) fails the transmission, codeword retransmission is enabled by duplicating the failed codeword at the base station (210) and then retransmitting the duplicated codewords over both codeword pipes using the same transmission layers or “rank” as the original transmission.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.