Patent ID: 8223817

Claim:
A frequency hopping method adapted for use in single carrier variable bandwidth wireless communication systems, during communication between at least a first radio node and a second radio node, wherein a continuous part of the available frequency spectrum is assigned for the communication, said first radio node and second radio node establishing or maintaining a communication session, the method comprising: establishing a bandwidth tree by dividing the available bandwidth, associated with the available frequency spectrum in a leveled structure, wherein the available bandwidth at each new level, n, splits a bandwidth portion at the preceding level into a plurality of new pieces, whereby all possible combinations of bandwidth splitting forms a hierarchical tree-like structure, hereinafter referred to as the bandwidth tree, and a branch going to a certain level in the tree identifies a carrier frequency with a specific level dependent bandwidth, and mapping the bandwidth tree to physical carrier frequencies; assigning a bandwidth to the communication session by determining a position in a hopping sequences tree, said hopping sequence tree having the same tree structure as the bandwidth tree, and wherein each leaf represent a hopping sequence; and performing frequency hopping by determining a hopping sequences value, representing a position in the bandwidth tree, for each time instance based on the position in the hopping sequence tree, wherein the hopping sequence value at the level n, is dependent on the hopping sequence value associated to the same branch structure on the adjacent level closer to the root of the hopping sequence tree, n−1, and an input sequence associated with the level n.