Patent ID: 11962342
Assignee: SEMTECH CORPORATION
Field: Telecommunications (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A radio transmitting device configured to transmit a spread-spectrum radio signal wherein a carrier frequency changes in a predetermined set of radio channels according to a hopping sequence, the spread-spectrum radio signal being organized in packets having each a header transmitted at a first channel in the hopping sequence comprising a detection sequence, and payload data encoding a message transmitted at following channels in the hopping sequence further configured to select a binary mask and generate the hopping sequence by generating a pseudorandom permutation of numbers, alter the pseudorandom permutation by bitwise exclusive-or operations with the binary mask, reduce a range of the altered permutation such that the range is contained in the predetermined set of radio channels, encoding the binary mask in the header to announce the hopping sequence.