Patent ID: 9198078
Filing Date: 2015-11-24
Classification: H04L,H04W

Abstract:
1. A method of managing signaling overhead in a wireless multicast system, comprising: receiving at least one retransmission request from each of a plurality of wireless devices, wherein the plurality of wireless devices is receiving a multicast broadcast from an access node; determining a number of retransmission requests received from each of the plurality of wireless devices; selecting from among the plurality of wireless devices a first group of wireless devices, the first group comprising a second group of wireless devices and a third group of wireless device, wherein the number of retransmission requests of each of the wireless devices of the second group are within a first range, and the number of retransmission requests of each of the wireless devices of the third group are within a second range which is less than the first range; determining a delay time for each wireless device in the first group based on the respective number of retransmission requests from each wireless device, wherein the delay time increases as the number of retransmission requests decreases; starting a timer at one or more wireless devices of the first group using the delay time determined for each respective one or more wireless devices when it is determined that a data packet is not received at the one or more wireless devices; and receiving another retransmission request from a wireless device comprising a shortest delay time of the one or more wireless devices when the shortest delay time expires.