📄 changes-1.1.3.html

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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head>  <title>TinyOS 1.1.3 Significant Changes</title></head><body bgcolor="#f8f8ff" link="#005bb7" vlink="#005bb7"><table border="0" hspace="4" cellspacing="2" width="100%" cellpadding="3">  <tbody>    <tr bgcolor="#e0e0ff">      <td width="100%"> <font face="tahoma,arial,helvetica"><b><big><big>Significant Changes in TinyOS between v1.1.1 and 1.1.3</big></big></b> </font>      <p> <font face="tahoma,arial,helvetica">Last updated 7 January2004 </font> </p>      </td>    </tr>  </tbody></table><p></p><i>Note: While minor releases deliver TinyOS additions andimprovements to the community more quickly, they do so with lesstesting. If your environment requires stability, consider using theprevious major release (TinyOS 1.1.0) or, at the very least, testing yourapplications carefully with the new release before migrating wholesaleto 1.1.3.</i></p><p> This document outlines the changes that have occured in TinyOSsince the last snapshot release (1.1.1) and the current minor release (1.1.3). The major changes in 1.1.3 include the new MAC layer, B-MAC, as well as various bug fixes.<p><table border="0" hspace="4" cellspacing="2" width="100%" cellpadding="3">  <tbody>    <tr bgcolor="#e0e0ff">      <td width="100%"><nobr><b><font face="arial,helvetica">TinyOS</font></b></nobr></td>    </tr>  </tbody></table></p><p>TinyOS 1.1.3 includes <b>B-MAC</b>, a new MAC layer w/ CSMA with collision avoidance, gain control, channel filtering for channel clear decisions; max bw from 42 pckts/sec to 53 pckts/sec, outperforms the 1.1 MAC layer by over 100% (in terms of packet throughput) while achieving 85% channel utilization.</p><table border="0" hspace="4" cellspacing="2" width="100%" cellpadding="3">  <tbody>    <tr bgcolor="#e0e0ff">      <td width="100%"><nobr><b><font face="arial,helvetica">Systems</font></b></nobr></td>    </tr>  </tbody></table><p>Released simultaneously with TinyDB 1.1.3 is the 1.1.3 minor release oftask-tinydb which includes numerous bug fixes and upgrades. For more information on TinyDB, please see documentation in the doc/ directory.</p><b><font size=4><a href="index.html">Index &gt;</a></font></b> </p></body></html>

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