*2.9.10. RGR - Resilient geographic routing*

Resilient Geographic Routing (RGR) protocol [73] is also a trust-based routing protocol that relies on a modified routing operation in GPSR. The basic idea in RGR is to assign an initial trust value for each node. Then, this value is incremented or decremented depending on the forwarding activity of the monitored node using a step function. The source node selects probabilistically a subset among its neighbors to forward its packet. This subset is selected from the node's forwarding set that exhibits trust values greater than a threshold.
