Patent ID: 8325697
Filing Date: 2012-12-04
Classification: H04L

Abstract:
1. A method of operating a communications device to communicate information, the method comprising: monitoring a plurality of different sets of communications resources; determining the amount of energy received on at least a first portion of said different sets of communications resources; based on the determined amount of energy, selecting a set of communications resources from said plurality of different sets of communications resources to use for communication; making a pseudo random selection of one of a plurality of different pilot sequences to use for said communication, said selecting one of a plurality of different pilot sequences being for a first time period; transmitting pilot signals using the selected one of the plurality of different pilot sequences and at least a second portion of the selected set of communications resources; and changing to a different one of the plurality of different pilot sequences and using the different one of the plurality of pilot sequences during a second time period which is subsequent to said first time period according to a predetermined function.