Network interrupts

James Brown, Joe Finney, Christos Efstratiou, Ben Green, Nigel Davies, Mark Lowton, Gerd Kortuem
2007 Proceedings of the second workshop on Challenged networks CHANTS - CHANTS '07  
The importance in maintaining energy efficient communications in low power networks such as sensor and actuator networks is well understood. However, in recent years, a growing number of delay sensitive and interactive applications have been discovered for such networks, that are no longer purely limited to the data gathering model of sensor networks. Providing support application requiring low latency interaction in such environments without negatively affecting energy efficiency remains a
more » ... lenging problem. This paper outlines the importance of this emerging class of application, discusses problems involved in supporting them in energy challenged environments, proposes a combined hardware and software mechanism based on heterogeneous wireless networking which works toward solving this problem, and goes on to evaluate this mechanism through experimental analysis. The paper concludes with a discussion of the applicability of the mechanism to typical application scenarios. Keywords low power networking, heterogeneous devices, interactive applications, delay sensitive applications Summarizing these findings, the key communication requirements for these systems are: R1. Embedded nodes should maintain a long battery life (>1 year). R2. Nodes should be able to operate without any supporting communication infrastructure. R3. User-driven communication should maintain short delay responses (<1 sec). R4. Emergency communication should be performed with minimal delay (<100ms). R5. System should be optimized for the high variation of communication frequency: long periods of inactivity and short, unpredictable periods of low latency interaction.
doi:10.1145/1287791.1287802 dblp:conf/mobicom/BrownFEGDLK07 fatcat:uga3kub52bcfvmokzxa45bsrii