Performance Improvement Using Link Management in Wired and Wireless Networks

Abstract: Knowledge of bottleneck capacity of an Internet path is critical for efficient network design, management, and usage. With emerging high speed Internet links, most traditional estimation techniques used for link capacity estimation are limited in providing fast and accurate capacity estimations. In general for effective and efficient means of communication between the nodes, the packet that has been sent from source node has to reach the destination without any loss. If the packet inflow of the node is greater than the link capacity of the node then the packets are to be queued in the buffer. It leads to the overflow of buffer. The packets that are dropped by the overflow of the buffer will then be stored in the new buffer. The new buffer will then be managed and allows the transfer of those packets to the destination. By using the link estimation technique named PbProbe, the forward link capacity and the backward link capacity of the path is estimated. Based on these estimations the delay sum and dispersion of the packets is calculated. The packets that are dropped because of the overflow of buffer will then be managed in the new buffer by an active queue management technique named CoDel. This CoDel absorbs all the dropped packets and managed in the new buffer that adapts to changing link capacities and forwards those packets to other end point