A CROSS LAYER FRAMEWORK FOR CONGESTION CONTROL USING RECEIVER SIDE FEEDBACK SCHEMES OVER MANETS

CSE

Wireless Ad hoc networks are short-lived wireless networks because they are composed to fulfil a certain goal and refrain to exist after fulfilling this goal. Wireless Mobile stations might promptly join or leave the Ad hoc network at any instance, thus Ad hoc networks have a dynamic framework. In most Wireless networking applications, the protocols are categories into distinct modules to compose a protocol stack. Each layer accomplishes benefit of the services bring by the layer directly below it, and also grant service to the layer exactly above it. The source destination transmission is restraint between neighbouring layers with a least possible set of primitives. The layering mechanism facilitates the construction and deployment and contributes the possibility of alternative layer implementations. The characteristics of wireless Ad hoc networks contradict from infrastructure based networks in many ways. Wireless networks have minimum medium scope and maximum bit error rates. Because of the forthright coupling among the physical layer and the upper layers, the conventional protocol stack is not satisfactory for infra-structureless networks. Cross-layer scheme is an effective research pace to enhance infra-structureless or wireless network performance, where information is transferred automatically between different protocol layers. in this paper, the effect of Robust Random Early Detection (RRED) active queue management technique with different TCP variant - TCP-LP, TCP-Cubic, TCP-Westwood and TCP-Compound under varying congested network density is examined on to check the improvement and performance of DSDV under the FTP traffic. The effect of network size on the TCP variants with and without RRED was studied. Experimental studies show that TCP LP and TCP Westwood along with RRED technique perform much better than the others.

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