CRT: Crosslayered Routing Topology for Congestion Control in Mobile Ad Hoc Networks
V. V. Appaji · 2012
All nodes in a Mobile Ad hoc Network are having mobility and dynamically tied in a subjective approach. Due moving d irections caused by mobility, the frequent link failure happens, which consequences in packet losses. The protocol used in transmission handling in general fails to identify the root cause of the packet dropping hence assumes that these packet losses are due to congestion only. This wrong assumption need packet retransmissions till packet arrive successfully at the receiver. The protocols used in mobile ad-hoc networks are based on the layered architecture. The layered approach is extremely rigid and strict since each layer of the architecture is only concerned about the layers immediately above it or below it. Current wireless protocols rely on significant interactions between various layers of the network stack. In this context we propose a cross-layer routing topology in short CRT to improve the congestion detection and handling strategy. The CRT is Mac, application and physical layer centric in particular. The goal is to improve transmission performance by distinguishing between packet loss due to link failure and arbitrary loss of packets. Hence in our proposed cross layer routing topology the strength of the communication signal between hop level nodes is used to determine link failure. The objective of the CRT is to distinguish between packet loss due to link failure and arbitrary loss of packets and ensure QOS at the application layer. The experiment results emerged as an evidence for better resource utilization in congestion controlling by our proposed protocol.