r3 - 01 Apr 2008 - 02:36:14 - Main.kyuhkimYou are here: TWiki >  Main Web > RtclProjects > SMART

Autonomous Wireless Systems Using Mobile Robots

Project Description

Mobile wireless end-systems often experience intermittent loss of connections and/or varying network performance due to their location-dependent data and error rates. These problems can be solved by positioning mobile devices/nodes at the best signal reception locations or areas. Starting from this simple observation, we explore how to exploit such spatially-diverse link-quality by enabling mobile devices to autonomously position themselves to improve their network performance. We first identify research challenges/issues in designing such autonomous mobile wireless end-systems. Then, as a basic building block, we propose a Spatial Measurement and Autonomous Relocation Technique (SMART) that enables end-systems to effectively exploit the spatial diversity in wireless links. Finally, we implement and evaluate a SMART prototype with commodity robots and IEEE 802.11-based wireless cards to demonstrate its feasibility and utility.

Performance Evaluation

We have evaluated our measurement techniques and navigation schemes with a system prototype. The below is one snapshot of spatial measurements of our lab. Also, you can watch our short video clips. More results and a full draft are available upon request.

  • Spatial measurement at t = 30 sec

      smart-nav0.gif

  • Spatial measurement at t = 90 sec

      smart-nav.gif

People

Faculty

Student

Collaborator

Publications

  • Submitted for publication, 2008

Acknowledgement

  • This project is a collaborative effort between RTCL and NEC Labs America. Some of results reported in this website are based on the progress that Kyu-Han Kim has made as a summer Intern at NEC Labs Amercia during 2007 Summer.

-- Main.kyuhkim - 23 Oct 2007

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I Attachment Action Size Date Who Comment
movmp4 roverap-kim1.mp4 manage 4647.4 K 04 Nov 2007 - 20:57 Main.kyuhkim  
movmp4 roverap-kim2.mp4 manage 4918.4 K 04 Nov 2007 - 20:58 Main.kyuhkim  
gifgif smart-nav.gif manage 1815.4 K 04 Nov 2007 - 20:40 Main.kyuhkim Spatial Measurement at T1
gifgif smart-nav0.gif manage 1815.4 K 04 Nov 2007 - 20:40 Main.kyuhkim Spatial Measurement at T0
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