Wake on wireless: an event driven energy saving strategy for battery operated devices
Proceedings of the 8th annual international conference on Mobile computing and networking
Exploiting Radio Hierarchies for Power-Efficient Wireless Device Discovery and Connection Setup
VLSID '05 Proceedings of the 18th International Conference on VLSI Design held jointly with 4th International Conference on Embedded Systems Design
Siphon: overload traffic management using multi-radio virtual sinks in sensor networks
Proceedings of the 3rd international conference on Embedded networked sensor systems
Intel Mote 2: an advanced platform for demanding sensor network applications
Proceedings of the 3rd international conference on Embedded networked sensor systems
The low power energy aware processing (LEAP)embedded networked sensor system
Proceedings of the 5th international conference on Information processing in sensor networks
CoolSpots: reducing the power consumption of wireless mobile devices with multiple radio interfaces
Proceedings of the 4th international conference on Mobile systems, applications and services
Telos: enabling ultra-low power wireless research
IPSN '05 Proceedings of the 4th international symposium on Information processing in sensor networks
XYZ: a motion-enabled, power aware sensor node platform for distributed sensor network applications
IPSN '05 Proceedings of the 4th international symposium on Information processing in sensor networks
Datalink streaming in wireless sensor networks
Proceedings of the 4th international conference on Embedded networked sensor systems
X-MAC: a short preamble MAC protocol for duty-cycled wireless sensor networks
Proceedings of the 4th international conference on Embedded networked sensor systems
Proceedings of the 6th international conference on Information processing in sensor networks
Powerful Change Part 1: Batteries and Possible Alternatives for the Mobile Market
IEEE Pervasive Computing
Secure-TWS: Authenticating node to multi-user communication in shared sensor networks
IPSN '09 Proceedings of the 2009 International Conference on Information Processing in Sensor Networks
An adaptive link layer for heterogeneous multi-radio mobile sensor networks
IEEE Journal on Selected Areas in Communications - Special issue on simple wireless sensor networking solutions
Survey Paper: A survey on multi-channel communication in wireless sensor networks
Computer Networks: The International Journal of Computer and Telecommunications Networking
GPS-free directional localization via dual wireless radios
Computer Communications
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We study the problem of concurrently supporting multiple radios with different capabilities and interfaces on a single sensor node platform. Through a detailed experimental study on hardware multi-radio platforms, using the two representative radio technologies 802.15.4 and 802.11, we identify bottlenecks and design tradeoffs that are usually overlooked and that, as we show, have a significant impact on the sensor network's performance and energy efficiency. Our findings are threefold. We show that a proper pairing of processor and radio is crucial for taking the full advantage of the energy efficiency of higher bandwidth radios. The processor/radio pairing affects the energy balance of a sensor node, thus making the design of dynamic switching among multiple radios more challenging. Second, we demonstrate and quantify the impact of network traffic on energy consumption of a sensor node while varying network parameters, and illustrate the deficiency of existing energy-optimizing protocols. Our results indicate that by properly adjusting network parameters, such as packet size and transmission period, energy savings of upto 50\% can be achieved under heavy network traffic conditions when a CSMA-based MAC is used. Weconclude by presenting a set of guidelines for designing and implementing energy efficientmulti-radio platforms.