Affordable Access

Lost Retransmission Detection for TCP Part 2: TCP Using SACK Option

IFIP Lecture Notes in Computer Science (LNCS)
Publication Date
  • Mathematics


The performance of transmission control protocol (TCP) is largely dependent upon its loss recovery. Therefore, whether packet losses may be recovered without a retransmission timeout (RTO) or not is a very important issue. Although TCP using selective acknowledgement (SACK) option can recover multiple packet losses in a window, it cannot avoid RTO if a retransmitted packet is lost again. In order to cope with this problem, we propose a simple change to TCP SACK, which is called TCP SACK+ in simple. We use a stochastic model to evaluate the performance of TCP SACK+, and analyze its performance comparatively in terms of loss recovery probability. Numerical results evaluated by simulations show that TCP SACK+ can improve the loss recovery performance of TCP SACK significantly in presence of random losses.Full Text at Springer, may require registration or fee

There are no comments yet on this publication. Be the first to share your thoughts.


Seen <100 times