Method and apparatus for minimizing total transmission energy in a communication system employing retransmission of frame received in error
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United States of America Patent
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Aug 3, 2004
Grant Date -
N/A
app pub date -
Oct 22, 1999
filing date -
Oct 9, 1999
priority date (Note) -
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Abstract
Method and apparatus for transmitting a signal at a predetermined level of reliability using retransmission of erroneously transmitted frames so as to minimize total transmission energy. The transmitting station evaluates the frame error rate (FER) as a function of energy. Next, the transmitting station determines a combination of initial transmission energies and retransmission energies that will provide the target level of reliability while minimizing the total transmission energy employed in the initial transmission and the retransmissions. The transmitting station transmits a frame with an initial transmission energy. Employing conventional feedback methods the transmitting station is alerted to the occurrence of frame errors at the receiving station. The transmitting station upon notification of a frame error retransmits the frame with an energy determined to minimize the total energy required to transmit the frame with a predetermined level of reliability.
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