No abstract

This paper focuses on improving the reliability of packet transmission in wireless CCN. Various studies on wireless CCN have been conducted; however, only a small number have addressed such an issue of reliability. Due to the packet size limitation of the MAC layer, a segment from the upper layer needs be fragmented into smaller pieces. The problem is that a receiver cannot rebuild the segment even when only a single fragment is lost. Of course, the traditional CCN provides a solution with interest retransmission. However, this scheme causes a significant network overhead as it requires all the fragments, even the one(s) successfully transmitted, to be requested for retransmission. To solve this problem, we propose a novel scheme in which only missing fragments are requested. We compare the proposed scheme to the interest retransmission mechanism by means of implementation in order to analyze its effectiveness.