Active interest management for improving flow completion time in named-data networking

Abstract

Interest aggregation is the primary feature of named-data networking (NDN). The interest aggregation reduces duplicated transmissions for multiple requests on the same data, but can delay loss recovery when data packets are lost. Since retransmitted interest packets for loss recovery cannot be distinguished from regular interest packets, the lost data packets can be recovered after the timeout of the interest aggregation. The delayed loss recovery can largely increase flow completion time, particularly on small content downloads. In this paper, we propose an active interest management (AIM) scheme based on random early NACK to avoid the delayed loss recovery as well as keeping the benefit of interest aggregation. Using NS-3, we show that our scheme significantly reduced flow completion time of both small and large content.