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| Environmental Cognition Based Wireless Mesh Network Cross-layer Routing Protocol |
| Huaiyu Wen, Guangchun Luo |
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Abstract This paper takes Optimized Link State Routing as prototype to design
a cross-layer based proactive routing protocol CM-OLSR (Cross-layer
Metric based Optimized Link State Routing). This protocol uses a
brand-new routing metric CLM (Cross-layer Metric), introduces the
idea of environmental cognition in Cognitive Wireless Network and
senses link quality impact factors of node available bandwidth, node
load, link delivery rate and link interference trough cross-layer
operation mechanism. The metric is taken as a basis of route
calculation and selection to optimize the route selection. This
paper also proposes a routing damping mechanism which effectively
avoids the route flapping problem easily induced by load-sensitive
routing metric while fully using the network resources. The
simulation results show that CM-OLSR can improve the network
throughput, reduce the end-to-end delay and achieve load balancing
routing results.
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