Patent ID: 7194006
Filing Date: 2007-03-20
Classification: H04B,H04W

Abstract:
1. A method of transmitting data from a plurality of mobile stations to a base station, the method comprising: dividing the mobile stations into a first and a second data rate group; selecting a first mobile station for transmission, the first mobile station being the first one in a data queue and in the first data rate group; calculating first cross correlations between array response vectors of the first mobile station and the rest of the mobile stations in the first data rate group; comparing the first cross correlations to a predetermined threshold; selecting a second mobile station unless all the first cross correlations are greater than or equal to the predetermined threshold and all second cross correlations between array response vectors of the first mobile station and mobile stations in the second data rate group are greater than or equal to the predetermined threshold; and transmitting data from said selected mobile stations simultaneously.