Situation-Based Congestion Control Strategies for Wired and Wireless Networks

Performance of transport layer is measured mostly in terms of packet delivery ratio, transmission delay, and throughput. Congestion control (CC) strategies are responsible for transport layer performance. There are different congestion control algorithms are designed and developed by researchers to handle shared, highly distributed and heterogeneous environment. In this paper, we are analyzing most of the popular congestion control algorithms based on link state, type of traffic, mode of transmission and bandwidth delay product (BDP). In the proposed algorithmic solutions, networking researchers not only looking for congestion but also taking care of effective use of network resources in different types of environments such as wired, wireless, high-speed, long-delay, etc. To avoid severe congestion based on feedback mechanism few packets are dropped randomly by using active queue management (AQM) techniques. Using explicit congestion notification (ECN) mechanism unnecessary packet dropping is avoided. Data center network (DCN) uses a different approach to handle congestion.