US Patent 8259636 Method for communicating

The present invention relates to a method for communicating data in a telecommunication network comprising at least one primary station, and a plurality of secondary stations, comprising at a secondary station the step of transmitting a feedback signal to the primary station on a random access channel, wherein the feedback signal being of—a dedicated type related to at least one point to point link between the considered secondary station and the primary station, or—a common type related to multicast links, wherein, depending on the transmission, the second part being related to a first type of multicast link or to a second type of multicast link.