C. Michael Olsen

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The wireless medium is a scarce shared resource in mobile computing. Consequently, the media access control (MAC) layer in-uences the fairness and robustness of the wireless network. According to the current MAC protocols, stations are not able to gain access equally to the shared wireless medium. This problem is commonlyknown as the fairness problem. The(More)
We recently demonstrated a high function wrist watch computer prototype that runs the Linux operating system and also X11 graphics libraries. In this paper we describe the unique energy related challenges and tradeoffs we encountered while building this watch. We show that the usage duty factor for the device heavily dictates which of the powers, active(More)
The relative power consumed in the WLAN interface of a mobile device is rising due to significant improvements in the energy efficiency of the other device components. The unpredictability of the incoming WLAN traffic limits the effectiveness of existing power saving techniques. This paper introduces a Power Aware Web Proxy (PAWP) architecture designed to(More)
LIMITED DISTRIBUTION NOTICE: This report has been submitted for publication outside of IBM and will probably be copyrighted if accepted for publication. It has been issued as a Research Report for early dissemination of its contents. In view of the transfer of copyright to the outside publisher, its distribution outside of IBM prior to publication should be(More)
We propose to improve battery life in pervasive devices by using multiple processors that trade off computing capacity for improved energy-per-cycle (EPC) efficiency. A separate scheduler circuit intercepts interrupts and schedules execution to minimize overall energy consumption. To facilitate this operation, software tasks are compiled and profiled for(More)
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