H - Electricity – 04 – L
Patent
H - Electricity
04
L
325/15, 325/36
H04L 1/00 (2006.01) H04L 1/08 (2006.01) H04L 1/16 (2006.01) H04L 1/18 (2006.01) H04Q 7/28 (2006.01) H04L 1/12 (2006.01) H04Q 7/22 (2006.01)
Patent
CA 1283455
APPARATUS AND METHOD FOR TRANSMITTING DIGITAL DATA OVER A RADIO COMMUNICATIONS CHANNEL ABSTRACT OF THE DISCLOSURE a digital radio RF signalling protocol communicates either digitized voice or digital data signals and indicates the type of information being communicated to the receiver. Multiple repeats of control signals are provided for fade protection and to ensure correct receipt even under adverse communications channel conditions. When the destination transceiver received a transmitted digital data burst from the transmitter, the destination transceiver transmits a responsive acknowledge message and may specify in the acknowledge message which portions of the received message were received incorrectly and should be retransmitted by the originating transceiver. The originating transceiver determines the contents of subsequently-transmitted data bursts based upon the information it receives from the destination transceiver by way of the acknowledge message. As deleterious phenomena (e.g., noise and/or fading) degrade communications channel quality, the acknowledge message handshaking causes the originating transceiver to repeat incorrectly received data packets until the destination transceiver finally receives those data packets correctly.
566662
Childress Jeffrey Scott
Hall Nancy Limpinsel
Hughes Houston Howard III
Company General Electric
Craig Wilson And Company
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