Congestion Control and Avoidance Using TCP-VEGAS in Adhoc Social Network

Ad-hoc Social Network (ASN) is a mix of social network and ad-hoc network. Today most of mobile phones are provided with Bluetooth, Wi-Fi, and Cellular radio and able to support ad-hoc communication mode. Communications between nodes in Ad-hoc Social Networks (ASNETs) based on the nodes' social features like social graph, human mobility pattern, similarity, centrality, community, and their strength. However, with increasing growth of social networks, reliable and congestion-free communication becomes difficult due to its complexity and dynamic nature of user movement. The existing system control overhead and provide reliable transmission for popular packets in ad-Hoc social networks. However, this solution is not suitable for ASNETs where the allocation of bandwidth is based on social popularity of nodes. In order to make efficient use of bandwidth, a newest version of TCP named TCP Vegas is used to estimate the available bandwidth using bandwidth estimation scheme. This scheme improves transmission reliability by assigning bandwidth to users based on their popularity levels.