Bandwidth efficient router design with introduction of buffering to reduce retransmission cost of corrupt data

Abstract

A new design of router is proposed in this research paper to reduce the excessive wastage of bandwidth due to retransmission of corrupt packets. A buffer is attached to each router. All the packets that pass through a router are saved in the buffer for a very small time. In case if a packet is found corrupt at any router, it can be requested from the previous router which has a correct copy of the packet in its buffer. In this way we save a lot of bandwidth as a retransmission from sender to receiver is not required. In case of any corrupt packet, the extra bandwidth required for retransmission is limited to a single hop only. The paper analyzes the new design with the help of computer simulation and general discussion. Behavior of extra buffer attached to each router is analyzed as well as the extra load in managing of buffer is discussed. The simulation results show that proposed system reduces a lot of retransmission cost and a clear increase in throughput of system is observed.