Patent ID: 8675616
Filing Date: 2014-03-18
Classification: H04L,H04W

Abstract:
1. Method of performing a point-to-multipoint data transmission from a transmitting station to a plurality of first receiving stations, the method comprising the steps of: transmitting data from the transmitting station to the plurality of first receiving stations; receiving a confirmation message with respect to the data from at least one second receiving station of the plurality of first receiving stations at the transmitting station, the at least one second receiving station being a subset of the plurality of first receiving stations, wherein the confirmation message relates to one of a successful and unsuccessful decoding of the data after initiation of decoding of the data by the at least one second receiving station of the plurality of first receiving stations; transmitting the confirmation message from the transmitting station to at least one third receiving station of the plurality of first receiving stations; and receiving the confirmation message from the at least one third receiving station by the transmitting station, the at least one third receiving station being a subset of the plurality of first receiving stations; wherein each subset of the plurality of first receiving stations includes a predefined feedback phase that enables each subset to determine when to transmit the confirmation message to the other subsets; wherein the confirmation message is transmitted to the transmitting station from at least one additional receiving station of the plurality of first receiving stations with a first transmission power; wherein, when a number of receiving stations transmits the confirmation message in accordance with a feedback scheme, resulting in a superposition of confirmation messages and therefore in an increase of power received at the transmitting station, the received power at the transmitting station is sufficient for decoding the superposition of confirmation messages; and wherein, when less than the number of receiving stations transmits the confirmation message in accordance with the feedback scheme, the received power at the transmitting station is not sufficient for decoding the superposition of confirmation messages.