A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : Proactive Channel Handoff in wireless cognitive networks
Author(s) : L. Ou, S. Wujian
Filename : draft-liou-sunwujian-manet-proactive-handoff-00.txt
Pages : 10
Date : 2010-12-10
Driven by government policy and advanced radio technologies
, opportunistic spectrum usage plays an
ever-increasing role in
the next generation communication system. Due to the random
characteristics of primary users, it is impossible to fully describe
the activity feature in terms of time and space, rendering
opportunity usage unsafe. In order to minimize interference to
primary users, a history knowledge based algorithm is proposed in
this work, which compound historical statistics with current
information. Random early detection (RED) algorithm, which proves to
be efficient in active queue management (AQM) for switching fabrics,
is introduced to help select the desirable channel. In order to
further suppress the collision probability, all the channels are
sorted according to availability. Simulation results show that,
compared with completely random spectrum selection method, the
proposed RED-based channel access method gives better
performance in terms of channel selection delay.
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