Patent ID: 9014192
Filing Date: 2015-04-21
Classification: H04L

Abstract:
1. A method of performing duplicate detection for a hybrid automatic repeat request (HARQ) transmission, comprising: decoding a current subpacket received on an ARQ channel from a transmitter to obtain a decoded packet or an erased packet for the ARQ channel; if the decoded packet is obtained for the ARQ channel, determining whether the decoded packet is a duplicate packet based on a match of an identifier of the current subpacket received from the transmitter and a receiver unexpected next identifier generated by a receiver in response to a last subpacket received from the transmitter for a prior decoded packet obtained for the ARQ channel and previously acknowledged; and if the current subpacket is erased, incrementing the receiver unexpected next identifier if the receiver unexpected next identifier is a non-valid value, and forgoing incrementing when the non-valid value is the maximum number of subpackets for each packet.