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Next week's talk is on 26th October in our new reguar venue of
GS/102 (fewer stairs for you to climb up). The time is 16:00 as
usual. The speaker is Lorenzo Saino.<br>
<br>
<b>Title:</b> <br>
CCTCP: A Scalable Receiver-driven Congestion Control Protocol for
Content Centric Networking<br>
<br>
<br>
<b>Abstract:</b><b><br>
</b>Content Centric Networking (CCN) is a recently proposed
information-centric Internet architecture in which the main network
abstraction is represented by location-agnostic content identifiers
instead of node identifiers. In CCN each content object is divided
into packet-size chunks. When a content object is transferred,
routers on the path can cache single chunks which they can use to
serve subsequent requests from other users. <br>
<br>
Since content chunks in CCN may be retrieved from a number of
different nodes/caches, implicit-feedback transport protocols will
not be able to work efficiently, because it is not possible to set
an appropriate timeout value based on RTT estimations given that the
data source may change frequently during a flow.<br>
<br>
In order to address this problem, we propose in this paper a
scalable, implicit-feedback congestion control protocol, capable of
coping with RTT unpredictability using a novel anticipated interest
mechanism to predict the location of chunks before they are actually
served. Our evaluation shows that our protocol outperforms similar
receiver-driven protocols, in particular when content chunks are
scattered across network paths due to reduced cache sizes, long-tail
content popularity distribution or the adoption of specific caching
policies.<br>
<br>
<pre class="moz-signature" cols="72">--
Richard G. Clegg,
Dept of Elec. Eng.,
University College London
<a class="moz-txt-link-freetext" href="http://www.richardclegg.org/">http://www.richardclegg.org/</a></pre>
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