Supporting hybrid automatic retransmission request in...

Details Supporting hybrid automatic retransmission request in... Supporting hybrid automatic retransmission request in...

2009-09-24

2010-06-08

Edouard, Patrick N (Department: 2617)

Multiplex communications

Communication over free space

Combining or distributing information via frequency channels

C455S101000

Reexamination Certificate

active

07733840

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.

REFERENCES:
patent: 7304971 (2007-12-01), Balachandran et al.
patent: 7339949 (2008-03-01), Suzuki et al.
patent: 2004/0105386 (2004-06-01), Sipola
patent: 2005/0117508 (2005-06-01), Gaal
patent: 2007/0255993 (2007-11-01), Yap et al.
Haitao Zheng et al., “Multiple ARQ processes for MIMO systems”, Sep. 15-18, 2002, Personal, Indoor and Mobile Radio Communications, 2002. The 13th IEEE International Symposium, vol. 3 pp. 1023-1026.

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