Highly-resilient, energy-efficient multipath routing in wireless sensor networks
ACM SIGMOBILE Mobile Computing and Communications Review
Worldsens: development and prototyping tools for application specific wireless sensors networks
Proceedings of the 6th international conference on Information processing in sensor networks
Topology Formation in IEEE 802.15.4: Cluster-Tree Characterization
PERCOM '08 Proceedings of the 2008 Sixth Annual IEEE International Conference on Pervasive Computing and Communications
Multiconstrained QoS multipath routing in wireless sensor networks
Wireless Networks
SENSORCOMM '10 Proceedings of the 2010 Fourth International Conference on Sensor Technologies and Applications
Opportunistic routing for wireless ad hoc and sensor networks: Present and future directions
IEEE Communications Magazine
Low power, low delay: opportunistic routing meets duty cycling
Proceedings of the 11th international conference on Information Processing in Sensor Networks
Adaptive neighbor discovery for mobile and low power wireless sensor networks
Proceedings of the 15th ACM international conference on Modeling, analysis and simulation of wireless and mobile systems
Let the tree Bloom: scalable opportunistic routing with ORPL
Proceedings of the 11th ACM Conference on Embedded Networked Sensor Systems
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We consider the problem of running RPL on top of the IEEE 802.15.4 MAC layer-the two layers operate over two different structures, a directed acyclic graph in the case of RPL and a cluster-tree for IEEE 802.15.4. We propose to adapt the cluster-tree of IEEE 802.15.4 so that it can efficiently work coupled with RPL. Nodes in our modified cluster-tree can associate with several parent nodes by taking advantage of an adequate organization of superframes at the MAC layer. Building on this modified MAC layer, we define an opportunistic forwarding scheme that extends RPL with the possibility of forwarding packets over multiple paths. Instead of always using a preferred parent, a node opportunistically forwards packets through other parents as long as their routes towards the sink are better. We take advantage of the opportunistic forwarding to support higher-priority delay-sensitive alarms that need to arrive in sink before a given deadline along with low-intensity monitoring data considered as best-effort. We compare our opportunistic version of RPL to its basic version through detailed simulations in terms of packet delivery ratio, incurred delay, and overhead.