TY  - JOUR
T1  - WTLS SecSplit-TCP Proxy Based Protocol for MANET
AU - Vijay, J. Frank AU - Kumar, P.S. Sujith 
JO  - Asian Journal of Information Technology
VL  - 16
IS  - 7
SP  - 588
EP  - 591
PY  - 2017
DA  - 2001/08/19
SN  - 1682-3915
DO  - ajit.2017.588.591
UR  - https://makhillpublications.co/view-article.php?doi=ajit.2017.588.591
KW  - Degradation
KW  -TCP
KW  -dropped packets
KW  -functionalities
KW  -MAC
KW  -India
AB  - The throughput of TCP suffer when it used in mobile ad hoc networks. This is a direct consequence
of TCP wrongly attributing packet losses due to link failures (a consequence of mobility) to congestion. While
this problem causes an overall degradation of throughput, it especially affects connections with a large number
of hops where link failures are more likely. Thus, short connections enjoy an unfair advantage over long
connections. Moreover, if the MAC protocol defined in the IEEE 802.11 standard is used, the problems make
worse due to the capture effect induced by this protocol, leading to a larger degree of unfairness and a further
degradation of throughput. In this study, we develop a scheme which we call SecSplit TCP. This scheme
separates the functionalities of TCP congestion control and reliable packet delivery. For any TCP connection,
certain nodes along the route take up the role of being proxies for that connection. The proxies buffer packets
upon receipt and administer rate control. The buffering enables dropped packets to be recovered from the most
recent proxy. Introducing proxies, we emulate shorter TCP connections and can thereby achieve as shown by
our simulations, the use of proxies decreases the problems described, i.e., it improves the total throughput by
as much as 30% in typical scenarios-grid view-(straight movement of nodes) it reduces unfairness significantly.
When comparing the performance of the two protocols, we infer that SecSplit-TCP outperforms Split-TCP by
50% in terms of delay, 4% in terms of delivery ratio, 60% in terms of drop and 48% in terms of throughput. We
conclude that incorporating TCP proxies is beneficial in terms of improving the security TCP performance in
mobile adhoc networks.
ER  -