  This paper introduces an efficient reactive routing protocol considering the
mobility and the reliability of a node in Cognitive Radio Sensor Networks
(CRSNs). The proposed protocol accommodates the dynamic behavior of the
spectrum availability and selects a stable transmission path from a source node
to the destination. Outlined as a weighted graph problem, the proposed protocol
measures the weight for an edge the measuring the mobility patterns of the
nodes and channel availability. Furthermore, the mobility pattern of a node is
defined in the proposed routing protocol from the viewpoint of distance, speed,
direction, and node's reliability. Besides, the spectrum awareness in the
proposed protocol is measured over the number of shared common channels and the
channel quality. It is anticipated that the proposed protocol shows efficient
routing performance by selecting stable and secured paths from source to
destination. Simulation is carried out to assess the performance of the
protocol where it is witnessed that the proposed routing protocol outperforms
existing ones.
