Methods to index the preambles in the bandwidth request channel
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United States of America Patent
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Jun 19, 2012
Grant Date -
Jan 20, 2011
app pub date -
May 19, 2010
filing date -
Jul 14, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
For use in a wireless communication network, a mobile station configured to determine a preamble sequence from a set of indexed preamble sequences by generating an index of the preamble sequence from a B-bit message is provided. The mobile station is configured to group the B bits of the message into n groups, each group having a substantially equal number of bits. The mobile station is also configured to generate a parity bit from each of the n groups. The mobile station is further configured to determine the index of the preamble sequence based on the n parity bits. The mobile station is still further configured to transmit the preamble sequence corresponding to the index of the preamble sequence. A base station configured to recover the B-bit message using the received signal from the mobile station is also provided.
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