2.1 Literature Survey on Different Research Papers
The aspect of engineering research is dynamic in nature. This is because different people do work in some areas to some extent and give room for other people to do further work. A lot of researches and work has been carried out by several scholars in Evaluation of TCP Using Congestion Control for Host to Host. The challenges the scholars found in Evaluation of TCP Using Congestion Control for Host to Host using different algorithms and techniques is prescribed below:
2.1.1. Literature on Host to HHCC-TCP
Different control of congestion approaches has been studied in this thesis of so as to keep the mainly unusual system-to-system plan of the TCP. This approached result focuses on some of the problems, to start by means of the essential difficulty of reducing the occurrence of congestion collapse, as well as consist of the difficulties of efficiently using the present network resources in several kinds of surroundings.
The first approach in this study, Tahoe, establishes the essential technique of regularly inquiring network resources and depending on the network boundary has been achieved that packet loss to be detected.
However, this method resolves the congestion setback; it generates a huge compact of inefficiency use of the network.
It has been proposed to employ further methods to generate control of congestion aggressive simply network is to be measured conservative and jamming-free through a congestion status.
The mechanism of congestion control that has been use in this paper is divided into four. Most data applications are made on top of TCP because TCP offers end-to-end reliability via retransmissions IP packets which were lost. TCP is firstly intended for wired networks in which the packet losses are because of network congestion and thus the window size of TCP is adjusted ahead of detection of packet losses. There are few number different varieties of congestion control algorithms, which are employed in several TCP versions.
The ordinary TCP assumes that 99% of the losses in packets in the network are caused by congestion and the remaining is caused by damage (Ghassan A. Abed, Mahamod Ismail and Kasmiran Jumari, 2012).
The TCP congestion control technique that has used in this paper is four algorithms. This paper presented a comprehensive review of more than thirty back-to-back TCP congestion control methods in both wireless and wired networks. Based on these classifications, we can conclude that a plethora of TCP congestion control technique uses the SCP with loss based scheme. In the future work, the joint technique of prediction, compression, and network coding will be studied (Lee Chin Kho, Xavier Défago, Azman Osman Lim and Yasuo Tan, 2013).
2.2 Research Gap
Based on the survey of different literatures in the table above I deduce that the research gap is Qos. The Qos parameters that are mostly affected are: Packet loss, queueing delay and congestion collapse.
S/N AUTHOR TECHNIQUE MAJOR FINDINGS FUTURE SCOPE
1. A. Afanasyev, N. Tilley, P. Reiher, and L. Kleinrock Tahoe, Reno, NewReno, SACK, DSACK
DUAL, Vegas, Veno Resolves the congestion setback; it generates a massive compact of inefficiency use across the network. Propose to employ further methods to create congestion control aggressive simply network is to be measured jamming-free and traditional through a congestion condition.
2. Ghassan A. Abed, Mahamod Ismail and Kasmiran Jumari Congestion avoidance, slow start, , fast retransmit and fast-recovery The ordinary TCP assumes that 99% of the losses in packets in the network are caused by congestion and the remaining is caused by damage The enhancement of TCP congestion control is basically needed to cover up the new requirements over latest applications.
3. K.UshaRani, M.Prudhvi Teja, K.Mounika and J.M.K.Naidu Algorithms; Slow Start, Congestion Avoidance, and Fast Retransmit, in addition to the modified Fast Recovery algorithm. It improves the performance of the TCP newReno. The future work to improve the mechanism that proposed against the performance.
4. Lee Chin Kho, Xavier Défago, Azman Osman Lim and Yasuo Tan Slow start, congestion avoidance, fast retransmit, and fast recovery The compression ratio depends on the types of data, if the packet data consist of high redundancy the compression ratio increase
In the future work, the joint technique of prediction, compression, and network coding will be studied
5. Kazumine OGURA, Zhou SU, and Jiro KATTO TCP-Libra, TCP-Reno The packet loss process and present a new congestion control algorithm which improves RTT-fairness as well as loss-fairness
Must investigate the differences between simulation and implementation
6. Md. Humayun Kabir and Md. Anindya Tahsin Prodhan NewReno, Westwood and KReno The record keeping of previous RTT values and decisions based on those records can be incorporated in the congestion control algorithm
to improve TCP’s performance in mixed networks Incorporate the change pattern of RTT in congestion control can be done in future work
In this report presents reviews of different approaches to control the congestion for TCP that don’t depend on every variety of precise signaling across the network. This review emphasized the verity which the study spotlight has changed with the expansion across the Internet, from the essential setback of removing the congestion collapse occurrence to setback of by means of presented network resources successfully in unusual kinds of surroundings.
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