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<h2>TCP/IP and throughput optimisation for EGPRS</h2>

<p>The Internet Engineering Task Force (IETF) has studied
the basic <a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id06079#id06079" onclick="openSmallPopup(event,'NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id06079#id06079');return false" shape="rect" target="_blank">TCP</a> throughput constraints and introduced
several TCP performance optimisation algorithms. The studies show that TCP
optimisation for different path characteristics and both short HTTP and bulk <a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id09855#id09855" onclick="openSmallPopup(event,'NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id09855#id09855');return false" shape="rect" target="_blank">FTP</a> transfer can be less than straightforward.</p>


<p>Different TCP enhancement features can be combined in several
different ways, thus affecting the performance tweaking. The problem is that
TCP enhancements that perform well in fixed networks may cause performance
loss in case of mobile networks like EGPRS.</p>


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