Analysis of MPTCP Packet Scheduling, The Need of Data Hungry Applications

Multihomed devices are common in today’s environment but are underutilized. Uninterrupted application requirements have leap bounds in terms of throughput requirements. Multipath TCP (MPTCP) is a recent and successfully built standard at transport layer, to achieve the above requirement using multipathing. Long-lived flows carry heavy payload and short-lived flows look for quick response. Scheduling algorithm should consider these requirements and accordingly implement varying strategies to fulfill these needs. Long-lived flows need MPTCP, to get maximum throughput. Short-lived flows can perform with TCP or with slow subpath of MPTCP. To distinguish between short- and long-lived flows and distribute their traffic on appropriate subflow of MPTCP, an intelligent packet scheduling algorithm is required. Research is climbing toward building optimum scheduler for MPTCP. Many packet scheduling algorithms are investigated in this paper for proper path selection, increased throughput, energy efficiency, bandwidth aggregation and receiver buffer optimization, by which issues are listed for them to develop better strategy using newer and advanced algorithms.