Patent ID: 8149793
Filing Date: 2012-04-03
Classification: H04H,H04L,H04W

Abstract:
1. A method of operating a radio network, the method comprising: providing a primary station (PS) and a plurality of secondary stations (SS indicating, via a secondary station of the plurality of secondary stations, the estimated level of interest by transmitting a predetermined signal in a preselected one of the plurality of random access slots, the estimated level of interest based on at least a threshold value; wherein each access slot of the plurality of random access slots includes a combination of one time slot and one signature, and wherein the primary station maps each of the plurality of random access slots to a different service such that all the secondary stations interested in one service transmit using one of the plurality of random access slots, and in that each combination of one time slot and one signature is contained in not more than one of the plurality of random access slots.