Patent ID: 8009551
Filing Date: 2011-08-30
Classification: H04L

Abstract:
1. A method for facilitating wireless data communication using OFDM over at least two networks, comprising: receiving an initial pilot group staggering sequence including two or more interlaces beginning with an initial starting interlace number, wherein the initial pilot group staggering sequence staggers as a function of time; determining a first interlace starting position for a first network, the first interlace starting position indicating a first interlace position in the initial pilot sequence; determining a first starting interlace number for the first network based on the initial pilot group staggering sequence and the first interlace starting position, wherein the first starting interlace number is the respective interlace in the initial pilot group staggering sequence located in the first interlace position indicated by the first interlace starting position; re-ordering the initial pilot group staggering sequence a first time to generate a first pilot staggering sequence to apply to the first network, the first pilot staggering sequence beginning with the first starting interlace number; determining a second interlace starting position for a second network, the second interlace starting position indicating a second interlace position in the initial pilot sequence; determining a second starting interlace number for the second network based on the initial pilot group staggering sequence and the second interlace starting position, wherein the second starting interlace number is the respective interlace in the initial pilot group staggering sequence located in the second interlace position indicated by the second interlace starting position; and re-ordering the initial pilot group staggering sequence a second time to generate a second pilot staggering sequence to apply to the second network to mitigate collisions of a first pilot signal applied in the first network and a second pilot signal in the second network, the second pilot staggering sequence beginning with the second starting interlace number.