A method and apparatus for transferring information over a communications link
includes transmitting information at a first power level, monitoring for correct
reception of the transmitted information and transmitting further information at
a second-, greater power level than that used for the original transmission if
correct reception did not occur. The further information allows the content of
the originally transmitted information to be established and in one embodiment
constitutes a retransmission of the originally transmitted information. By retransmitting
at a greater power level the probability of correct reception is enhanced, especially
when the communications link is wireless. A transmitter employing the present invention
may offer reduced power consumption since the transmission power level used for
the original transmission may be lower than that used by a transmitter not benefiting
from the present invention.
