Patent ID: 6580926
Filing Date: 2003-06-17
Classification: H01Q,H04B,H04W

Abstract:
Communication method between a base station comprising a network of N distinct antennae, N being a whole number greater than 1, and at least one mobile telephone, comprising the steps of:(a) estimating at the base station, the directions of arrival and the power values of radio-electrical path at the base station; (b) determining for this mobile telephone, a principal direction of arrival of said radio-electrical paths at the base station, by choosing a barycentre r of the directions of arrival of the different radio-electrical paths as being the principal direction of arrival, define as follows: r=&Sum;i=1J&it;â€ƒ&it;pi*ai/&Sum;i=1J&it;â€ƒ&it;piâ€ƒwhere i is a whole number, where J is the number of radio-electrical paths identified, where ai is the angle formed by the ith radio-electrical path in relation to the direction of the path which has the greatest radio-electrical power value, and where pi is the radio-electrical power value of the ith path; (c) selecting M antennae, M being a whole number strictly greater than 1 and less than N, of which the individual reception lobes have directions which are contained within an angular sector centered on the principal direction of arrival; (d) processing only the signals received by the selected M antennae from the mobile telephone.