A Novel Scheme for Dynamic Triggering Of Packet Dispersion

Abstract

Packet burst losses are proven to be detrimental to multimedia applications. Most of the burst losses in the Internet are the result of tail drop discipline, which drops packets when queues in routers are filled to their maximum capacity. A potential way of addressing the burst losses is to use packet dispersion over multiple and disjoint paths to destination. However, packet dispersion requires packet reordering and addressing the problems concerning packet latency and jitter. We are proposing a model that dynamically triggers packet dispersion depending on the high priority queue occupancy containing high priority traffic, whereas the need for packet dispersion and the number of dispersion paths is inferred from traffic load in other queues. Proposed mechanism reduces tail drops in queues containing high priority traffic by performing packet shifting to high priority queues that belong to other output interfaces designated for packet dispersion. It delivers significant benefits regarding packet loss and packet loss distance, which are considered imperative parameters for describing the quality of multimedia and real-time traffic