TCP has been designed and tuned as a reliable transfer protocol for wired links. However, it incurs end-to-end performance degradation in wireless environments where packet loss is very high. TCP HACK (Header Checksum Option) is a novel mechanism proposed to improve original TCP in lossy links. It presents an extension to TCP that enables TCP to distinguish packet corruption from congestion in ...

---------------------------------------------------ABSTRACT-----------------------------------------------Reliable transport protocols such as TCP are tuned to perform well in traditional networks where packet losses occur mostly because of congestion. Many applications of wireless sensor networks are useful only when connected to an external network. Previous research on transport layer protoc...

Recently, new versions of the TCP protocols such as HSTCP (High Speed TCP) has proposed to adopt the rapid growth of the Internet. However, it is important to consider a deployment scenario to shift gradually from the current to the new versions of TCP. A fairness problem between the performance of both current and new versions of TCP will be arisen when they share the same bottleneck link, whi...

We propose a new transport protocol, TCP Boston, that turns ATM's 53-byte cell-oriented switching architecture into an advantage for TCP/IP. At the core of TCP Boston is the Adaptive Information Dispersal Algorithm (AIDA), an efficient encoding technique that allows for dynamic redundancy control. AIDA makes TCP/IP's performance less sensitive to cell losses, thus ensuring a graceful degradatio...

We present an implementation of a faulttolerant TCP (FT-TCP) that allows a faulty server to keep its TCP connections open until it either recovers or it is failed over to a backup. The failure and recovery of the server process are completely transparent to client processes connected with it via TCP. FT-TCP does not affect the software running on a client, does not require to change the server’...

In this report, we propose a new mechanism which detects tampered-TCP connections and keeps the fairness among TCP connections at edge routers. The proposed mechanism monitors TCP packets at an edge router and estimates the window size or throughput of each TCP connection. By using estimation results, the proposed mechanism judges whether each connection is tampered or not and drops packets int...

Traditional TCP traffic modeling has focused on “micro-scale” modeling of TCP, i.e., detailed modeling of a single TCP flow. While micro-scale models of TCP are suitable for understanding the precise behavior of individual flows, they are not well suited to the situation when a large number of TCP flows interact with each other as is the case in realistic networks. In this survey, we present se...

It is well documented that the eeective throughput of TCP can suuer on plain ATM networks. Several research eeorts have aimed at developing additions to ATM networks like Early Packet Discard that avoid TCP throughput degradation. This paper instead investigates improvements to TCP that allow it to perform well on ATM networks without switch-level enhancements, thus avoiding additional complexi...

Flexible Dual-TCP/UDP Streaming Protocol (FDSP) is a new method for streaming H.264-encoded High-definition (HD) video over wireless networks. FDSP streaming is done in sequential video segments or chunks called substreams. In FDSP, substream lengths are used to control the amount of Transmission Control Protocol (TCP) data that needs to be sent prior to the playback of that substream. To avoid...

Internet connectivity today is based mainly on TCP/IP protocol suite. Performance of the Internet transport protocols may significantly degrade when end to end connection includes wireless links where packets delays and losses are caused by mobility handoffs and transmission errors. In this paper we perform analysis of the achievable throughput for different TCP versions, such as TCP Tahoe, TCP...