Supporting hybrid automatic retransmission request in orthogonal frequency division multiplexing access radio access system
US7693125B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2005 |
| Grant date | Apr 6, 2010 |
| Priority date | — |
| Expiry date | May 20, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/023
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of supporting a hybrid automatic retransmission request (HARQ) in an orthogonal frequency division multiplexing access (OFDMA) radio access system is disclosed. Preferably, the method comprises receiving a downlink data frame comprising a data map information element and a data burst comprising a plurality of layers, wherein each layer is encoded with a corresponding channel encoder, and wherein the data map information element is configured to support multiple antennas to achieve space time transmit diversity by providing control information associated with each one of the plurality of layers, wherein the control information comprises allocation of acknowledgement status channels corresponding to the plurality of layers, and transmitting in an uplink data frame a plurality of acknowledgement status, each acknowledgement status being associated with whether a corresponding layer of the plurality of layers is properly decoded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.