Patent ID: 9559846
Date: 2017-01-31
CPC Classifications: H04B,H04J,H04L

Claim:
1. A method comprising: processing a data packet by a processing device of a transmitter node for transmission over a radio communications network as a succession of waveforms transmitted at positions defined by hopping codes, said positions being time positions or frequency positions, wherein processing comprises the following acts that are performed by the transmitter node for each bit of the data packet to be transmitted, referred to as the “current” bit: calculating a hopping code at least as a function of a value of the current bit and of an encryption key generated by a pseudo-random generator, the encryption key having size greater than the maximum size of a data packet transmitted over the channel; and transmitting a waveform from the transmitter node toward a destination node over a communications channel of the network by a radio transmitter of the transmitter node, the waveform being transmitted at the position defined by the calculated hopping code, the transmitted waveform being identical regardless of the value of the current bit.