Link Capacity Division in P2P File Sharing System

Abstract

Optimal capacity partitioning in peer-to-peer (p2p) file sharing system has been a topic of discussion in recent years by many research scholars. In Various network like Wi-Fi, WLAN, LTE, and WiMAX, the access link capacity division between uplink and downlink can be modified by the peers. Each peer is allocated a link capacity by the network which can be used for uplink and downlink. This available link capacity can be judiciously divided between uplink and downlink in such a way that peers requirement is fulfilled while keeping the uplink minimum. The sum of uplink and download capacity is constant for fixed unit of time. So uplink and downlink capacity of each peer has been represented in terms of a variable. This paper aims to minimize the value of the variable such that uplink is minimum as well as requirement of each peer is fulfilled. In P2P file sharing system, the download requirements of the terminals have been described by a constant constraint system with addition-min relation inequalities. A linear programming approach is developed to find the minimum value of variable which makes the uplink minimum with satisfying the peers' requirement.