Transmission of ACK/NACK bits and their embedding in the CQI reference signal
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United States of America Patent
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Apr 3, 2012
Grant Date -
Feb 12, 2009
app pub date -
Jul 31, 2008
filing date -
Aug 7, 2007
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Abstract
A transmission of information within a wireless cellular network may include a first and second type of information. A subframe is produced that includes a plurality of symbols, wherein at least one symbol is designated as a data symbol and at least one symbol is designated as a reference signal symbol that contains a pre-defined reference signal. The first type of information is embedded in the data symbols. If the second type of data is expected, then the second type of information is embedded in at least one reference symbol by quadrature amplitude modulating the pre-defined reference signal. The subframe is then transmitted from one node in the network to a second node. In some embodiments, if it is determined that the second node is not expecting the second type of information, then a discontinuous transmission (DTX) response is embedded in the reference symbol instead of the second type of information.
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