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We present the design and implementation of Scepter, a system with explicit infrastructure support to reduce energy consumption and improve battery life of mobile devices. Scepter focuses on effective techniques that can reduce the total number of bits transmitted to communicate the same information from a mobile device to a base station. Scepter combines multiple techniques into a single unified...
In this paper we investigate the DHT performance for Peer-to-peer SIP. We analyze performance from the mobile phone perspective. This angle brings battery consumption and efficient use of the limited resources of the mobile devices to the focus. We develop an analytical model of Kademlia DHT performance and use it to analyze a number of different strategies to use peer-to-peer SIP with mobile devices...
Forward error corrections have taken much attention lately due the invention of the patented LT- and Raptor-codes. With these new class of forward error corrections, it is possible to encode and decode data in linear running time. Reed-Solomon however is relatively slow to calculate both on the encoding and decoding side. But Reed-Solomon has it's own benefits: it's free of patents, several implementations...
This paper presents a novel mechanism that enables mobile devices to efficiently participate in Distributed Hash Tables (DHTs). By selectively dropping messages, we can significantly reduce traffic and thus the energy consumption of mobile nodes with only minor performance degradation. The protocol extension preserves compatibility with existing widely used DHT systems. We evaluate the solution by...
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