Patent ID: 7068702
Filing Date: 2006-06-27
Classification: H04B

Abstract:
1. A method for determining a hopping sequence for selecting a channel from M channels divided into Np partitions to reduce probability of data collision in a frequency hopping spread spectrum (FHSS) communication system having a host apparatus, the host apparatus storing Q partition sequences and receiving a first sequence of M channels, M, Np and Q being positive integers, comprising the steps of: (a) measuring Np data collision ratios respectively corresponding to Np partitions, responsive to a RF signal, said Np data collision ratios having value of R(i), i being from 1 through Np and denoting an ith partition; (b) selecting a partition sequence from Q partition sequences, said partition sequence having a smallest value of a selection function H(p), wherein the selection function is a linear combination of the data collision ratio R(i), p being from 1 through Q and denoting a pth partition sequence; (c) mapping the first sequence of M channels to the selected partition sequence to produce a second sequence of M channels; and (d) responsive to a control signal, selecting one of the first sequence and the second sequence as the hopping sequence.