Patent ID: 7596080
Filing Date: 2009-09-29
Classification: H04L

Abstract:
1. A method for distributing data on an OFDM time-frequency grid for data transmission from and to mobile terminals in a mobile network allowing for coordination of interferences between different cells of the mobile network and adaptive subcarrier frequency allocation to mobile terminals, comprising: gathering subcarrier frequencies of the OFDM time-frequency grid in frequency patterns; constructing the frequency patterns to accommodate the use of pilot subgrids; changing a set of frequency patterns in a pilot-compatible manner between frequency diverse and frequency selective frequency patterns; allocating the frequency patterns to mobile terminals for data transmission; wherein a number of cyclic shifts in each of a plurality of interleaving intervals is chosen so that a number of pilots within each of a plurality of frequency diverse frequency patterns is not larger than the smallest integer that is larger than or equal to the result of the division of a number of subcarrier frequencies contained in each of the frequency diverse frequency patterns by a number of steps that lie between two adjacent pilots in an OFDM time-frequency grid.