Routing In Cellular Sensornets With Uniquely Identified Destination Nodes

Sensornet nodes observe physical phenomena, yielding data labelled with their geographic position. Geographic context can be exploited in packet routing to minimise energy consumption, provided that the application does not need to route packets to uniquely identified nodes. The latter may be necessary for a minority of packets concerning system management and sensor tasking. We present a hybrid approach to packet routing for cellular sensornets. A geography-aware mechanism routes packets between cells, which is sufficient for the majority of packets. For the minority of packets which must be delivered to uniquely identified nodes, a geography-ignorant mechanism handles the final stages of packet delivery within the cell containing the destination node.