Patent ID: 7729349
Filing Date: 2010-06-01
Classification: H04W

Abstract:
1. A method of transmitting data from a sender to a number of recipients in a system with a multi-layer protocol architecture, the method comprising the steps of: organizing the data into divided data packets comprising header data and payload data; adding multicast group control data to the data packets in a control layer of the sender's multi-layer protocol architecture, wherein the control data identifies a multicast group within the recipients to which the data will be sent; transmitting the data to a mobile radio system using point-to-multipoint transmission over a general channel in a mobile radio system; processing the data in a Medium Access Control (MAC) layer of a receiving mobile radio station by comparing the added multicast group control data with a multicast group number of the receiving mobile radio station; if the added multicast group control data corresponds to the multicast group number of the receiving mobile radio station, removing the multicast group control data from a corresponding data packet and passing the corresponding data packet to a higher protocol layer in the multi-layer protocol architecture; and if the added multicast group control data does not correspond to the multicast group number of the receiving mobile radio station, erasing the data packet without passing the data packet to the next protocol layer.