Typically, in low-power and lossy networks nodes communicate with servers over the Internet. Nodes collaborate wirelessly to relay their data to a gateway. A large-scale network can have multiple gateways. Selecting a proper gateway can have an immense impact on the network's performance. In this paper, we present joint routing and gateway selection protocols for low-power and lossy networks. To analyse the impact of per-packet and per-flow gateway selection protocols on a network's performance, we present two different protocols. Our protocols select the best gateway on per-packet and per-flow basis. Our protocols are based on a metric composed of the end-To-end available bandwidth and contention. Simulation and testbed results demonstrate that per-packet and per-flow gateway selection protocols perform similarly, and our protocols achieve up to 20% higher packet delivery ratio, 34% lower delay, and 40% lower retransmissions as compared to existing protocols.

Additional Metadata
Keywords Bandwidth and Contention-Aware Routing, IEEE 802.15.4, Low-Power and Lossy Networks (LLNs), Routing and Gateway Selection
Persistent URL dx.doi.org/10.1109/MoWNet.2017.8045945
Conference 2017 International Conference on Selected Topics in Mobile and Wireless Networking, MoWNeT 2017
Citation
Farooq, M.O. (Muhammad Omer), & Kunz, T. (2017). Bandwidth and contention-Aware routing and gateway selection for low-power and lossy networks. In 2017 International Conference on Selected Topics in Mobile and Wireless Networking, MoWNeT 2017. doi:10.1109/MoWNet.2017.8045945