Supporting hybrid automatic retransmission request in orthogonal frequency division multiplexing access radio access system
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United States of America Patent
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Apr 6, 2010
Grant Date -
Aug 31, 2006
app pub date -
Dec 27, 2005
filing date -
Dec 27, 2004
priority date (Note) -
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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.
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