Earticle

Transmission Control Protocol (TCP) is widely used for the transport layer protocol in most Internet and Intranet applications. The link characteristics of a specific link environment such as satellite has been limited and degraded by its link characteristics. To address such limitations Performance Enhancing Proxies (PEPs) have been designed and introduced to improve the operation of internet and intranet protocols in certain environments where a link or subnet suffers performance degradation with high error rates and with low bandwidths. This paper discuss the overview of PEPs together with the problems and drawbacks of such technologies to improve the degraded performance of TCPs. Based on the identified limitations of the currently developed and designed PEPs, we have integrated some mechanism for the improvement of the handover latency, thus enhancing its performance. Some steps with the handover procedure have been modified applying the benefits splitting and spoofing techniques resulting with a better performance and shorter handover latency. An enhanced packet buffering transmission module was introduced to boost the packet transmission performance in terms of efficiency.

In the network environment of the Internet and Intranet, Transmission Control Protocol (TCP) is Representative application of transport layer protocols. TCP based network specific environment and other upper-layer protocol performance should be limited according to link feature. To solve these problems for typical techniques is Enhanced-TCP based which use PEP. PEPs is placed between the degraded network segment complementary problems, and efficiently manage developed for efficient network environment. Because of these characteristics, PEPs in the satellite communications environment good solution has been Level rised. PEPs system is typical for a satellite-based network. However, because of the feature satellite network, has the disadvantage of high packet loss ratio and Long Return Trip Time (RTT). In addition, many problems remain, and various solutions are discussed. in this paper to solve these problems, an 'Advanced-PEP Architecture' based methodology of the new technique is proposed.