Buffer-aided and weight-based non-orthogonal network coding for wireless broadcasting

Hash searching and network coding based constant retransmission for wireless multicast

“…Subsequently, a probabilistic NC retransmission mechanism was proposed by Li et al [6] in an MSMR scenario. In [7], the buffer-aided NC with ARQ was proposed as an effective method to improve retransmission efficiency, where the correctly received un-decodable NC combined retransmission packets were waited in the buffer rather than deleting them. In the cooperative networks, NC can be performed at the relays as well.…”

“…To support HSNCR, a hash searching lost packet selection approach is designed. The contribution of this paper is summarised as follows: (i) We propose a constant NC-ARQ retransmission scheme, which provides more possibilities of NC to improve retransmission efficiency as compared with the existing INC-ARQ retransmission schemes [1][2][3][4][5][6][7]. Since this new scheme would not retransmit a lost packet until an optimum combination is found or a maximum combination is selected, it maximises the efficiency of every retransmission packet.…”