Improved Congestion Control Mechanism Using Modified Hybrid-TCP in Mobile Ad-Hoc Neworks

Mobile Ad hoc networks (MANETs) is wholly a wireless community with a dynamic nature of position and network topology, which may change instantaneously with respect to time and application demand. Mobility factor of mobile nodes not only open gates for various applications but give big reason of packet loss. Transport Layer protocols like Transmission Control Protocol (TCP) have been designed for reliable communication. This paper addresses hybrid approach to overcome congestion situation and avoid packet loss in wireless networks. Proposed Modified Hybrid approach is the variant of Hybrid-TCP (H-TCP) and TCP Reno. Proposed Modified Hybrid - TCP variant consider the rate of increment parameter based on signal strength and noise factor to estimate a accurate retransmission time. Proposed Modified Hybrid-TCP is simulated using NS2 simulator and evaluated according to size of congestion window, packet delivery ratio, throughput with respect to mobility factor (speed of node). Performance observation concludes that proposed Modified Hybrid-TCP variant raises significant performance improvement during transmission over traditional TCP variants.

[1]  Vasilis Friderikos,et al.  Cross-Layer Design to Improve Wireless TCP Performance with Link-Layer Adaptation , 2007, 2007 IEEE 66th Vehicular Technology Conference.

[2]  Malika Bourenane,et al.  New adaptation method of TCP for mobile ad hoc networks , 2014, 2014 World Congress on Computer Applications and Information Systems (WCCAIS).

[3]  Meena Rao,et al.  Quality of service enhancement in MANETs with an efficient routing algorithm , 2014, 2014 IEEE International Advance Computing Conference (IACC).

[4]  Gulbir Singh,et al.  A Comparison of TCP Performance over Routing Protocols for Mobile Ad Hoc Networks , 2014 .

[5]  Hao Jiang,et al.  Passive estimation of TCP round-trip times , 2002, CCRV.

[6]  In-Sung Han,et al.  QoS routing mechanism using mobility prediction of node in ad-hoc network , 2008, MobiWac '08.

[7]  G. Adesola Aderounmu,et al.  End-to-End Performance Evaluation of Selected TCP Variants across a Hybrid Wireless Network , 2006 .

[8]  Ju-wook Jang,et al.  Adaptive End-To-End Loss Differentiation Scheme for TCP Over Wired/Wireless Networks , 2018, WINSYS.

[9]  Hari Balakrishnan,et al.  An end-to-end approach to host mobility , 2000, MobiCom '00.

[10]  Giovanni Pau,et al.  TCP Libra : Exploring RTT-Fairness for TCP , 2007, Networking.

[11]  Christian Grimm,et al.  Empirical Analysis of TCP Variants and Their Impact on GridFTP Port Requirements , 2007, International Conference on Networking and Services (ICNS '07).

[12]  Sidi-Mohammed Senouci,et al.  Effect of Ad Hoc Routing Protocols on TCP Performance within MANETs , 2006, 2006 3rd Annual IEEE Communications Society on Sensor and Ad Hoc Communications and Networks.