An Improved Wireless Broadcasting Retransmission Approach Based on Network Coding

Based on the retransmission approach in wireless broadcasting based on network coding (NCWBR), which would decline the performance of the network and increase the retransmission numbers if the same node has more than two losing packets, we present an improved version of NCWBR, which can utilize multiple coded packets to decode data packets (Improved NCWBR). Theoretical analysis reveals that this way can ensure the solvability in the received nodes, and have the lower retransmission numbers. Simulation results indicate that compared with NCWBR approach, the approach presented in this paper can effectively reduce the retransmission numbers and improve the efficiency of transmission.