227 / 2016-01-19 13:20:15

DSTP-End to End Based approach to Optimize Data Transmission for Satellite Communications

9181,5498,8773,9161

—Since several years, satellite communications
are playing a remarkable role in telecommunications
infrastructures, thus the increasing interest in transporting
internet traffic over satellite links. Many technologies such as
the deployment of multicast and real-time audio/video
streaming application are likely to increase the percentage in
the context of TCP traffic in internet. The Transport Control
Protocol assures the internet transport protocol that supports
many common applications including e-mail service, ftp, http
or telnet. It also provides the reliable delivery of the data from
sending to receiving devices. In the transmission/reception
process, most of the critical problems are the Long Delay, and
the High bit error rate (BER). B.E.R (Bit Error Rate , refers
to a value ) relative to the error rate measured at the receipt
of a transmittal digital, relating to the level of mitigation and
/or disruption of a signal transmitted and Latency is a
minimum transmission delay in computer communications .
It means the time required for a packet of data from the
source to the destination through a network because To any
package transmitted by network corresponds to a value of
latency. In this observation, the implementation of congestion
control mechanism should be realized by taking account the
need to provide a better solution to prevent senders from
flooding the network with data to the point that intermediate
routers have no buffers left and have to discard data, which
TCP will then have to retransmit. In this paper we analyze an
optimized Vegas TCP Congestion Control Algorithm for
satellite communication system. Our main contribution here
consists to ameliorate the flow control mechanism by
modifying the algorithm we implement the protocol DSTP to
provide a special rate based scheme. By increasing windows
size, we develop the TCP protocol for high speed wide area
network .