Towards minimizing the within-packet redundancy in wireless network coding

Network coding, by right of the concise form and remarkable effect, has been applauded around the world since its emergence especially in the field of wireless communication. However, we find the superiority of network coding may be concealed by the over redundant information in coded packets under certain circumstances. That is, the back-and-forth coding at intermediate nodes makes the old information live forever in the network, occupying buffers and sophisticating decoding at receiving nodes. In this paper, we concentrate on the topic that has not aroused enough attention and introduce a simple method to trim the redundant information resort to Information-Centric Networking (ICN) with the invertibility of network coding before encoding again. After quantifying the calculation overhead of the method, we conduct experiments to validate the analysis in conjunction with the transmission efficiency. Simulation results demonstrate an approximate linear characteristic for the calculation overhead which we believe is affordable for hardware.