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Opportunistic Routing in Multi-Sink Mobile Ad Hoc Wireless Sensor ...

Opportunistic Routing in Multi-Sink Mobile Ad Hoc Wireless Sensor ...

Opportunistic Routing Spatial diversity (4) ● Nodes know their own and destination location ● MAC specifies forwarding region – optimal: lens of nodes closer to the destination ● Next hop is based on connectivity ikom - ComNets

Sensor nodes and multi-sinks are mobile, N sensor nodes > N sinks ikom - ComNets Simulation Model of ORMMA-WSN Multi-Sink scenario ● Limited communication range (no full connectivity inside a scenario) ● Sinks send higher power periodic beacons (covering larger area): – Neighbor Node (NN) list of nodes that appear in the comm. range – ACK list to data packets received during beacon interval ● Nodes forward beacons with normal TX power ● Data transmission only in the communication range ● Each sensor node obtains its mobility information: – Mobility Gradient (MG) is calculated from sink beacon RSSI – BNN and Best Sink ● Packets are relayed to the BNN according to the mobility information ● Each next hop node makes own decision about routing direction

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