To improve energy efficiency, major components of mobile devices implement two operational modes: active and sleep mode. When devices are idle, their components are in sleep mode and power consumption can drop by an order of magnitude or more. When devices are in use, their components sleep for many short time intervals. To conserve energy, components have to transition less frequently between modes, and sleep for longer intervals.
Our approach to reduce energy consumption uses HTTP proxies to shape incoming WLAN traffic. Our proxies use techniques specific to the HTTP payload to compensate for any negative impact that shaping may have. This paper describes the architecture of a Power-Aware Streaming Proxy (PASP), built on the Power-Aware x-Proxy (PAxP) framework. PASP uses RTSP/RTP semantics to effectively schedule media streams across the WLAN. We compare PASP with PAWP, which is a PAxP extension for web traffic, and identify problem areas
By: Marcel C. Rosu; C. Michael Olsen; Lu Luo; Chandrasekhar Narayanaswami
Published in: RC23350 in 2004
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