Apparatus, method and computer program product providing hybrid ARQ feedback for HSDPA MIMO
US7864738B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 2, 2007 |
| Grant date | Jan 4, 2011 |
| Priority date | — |
| Expiry date | Jun 8, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2001/125
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method includes generating automatic repeat request feedback information at a first device in response to a downlink transmission from a second device; encoding the feedback information to comprise an indication of a number of streams received in the downlink transmission and transmitting encoded feedback information to the second device. Another method includes transmitting a multi-stream downlink transmission from a first device to a second device; receiving encoded hybrid automatic repeat request feedback information from the second device; decoding the received hybrid automatic repeat request feedback information at the first device; and determining from the encoding of the hybrid automatic repeat request feedback information at least a number of streams that were actually received by the device from the downlink transmission. A wireless link between the devices can be a 2×2 MIMO link. Also disclosed are memory mediums for storing program instructions to implement the methods, and apparatus including user equipment and base stations constructed to carry out the methods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.