To Buffer or to Switch: Design of Multichannel MAC for OSA Ad Hoc Networks

We present an analytical framework to assess the effectiveness of different combinations of medium access control (MAC) protocols for multichannel opportunistic spectrum access (OSA) ad hoc networks. As a performance metric we focus on average link layer throughput, and investigate dedicated control...

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Bibliographic Details
Published in2010 IEEE Symposium on New Frontiers in Dynamic Spectrum (DySPAN) pp. 1 - 10
Main Authors Jihoon Park, Pawelczak, Przemyslaw, Cabric, Danijela
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.04.2010
Subjects
Access protocols
Ad hoc networks
Communication switching
Communications Society
Delay
Design engineering
Media Access Protocol
Performance analysis
Switches
Throughput
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Summary:We present an analytical framework to assess the effectiveness of different combinations of medium access control (MAC) protocols for multichannel opportunistic spectrum access (OSA) ad hoc networks. As a performance metric we focus on average link layer throughput, and investigate dedicated control channel (DCC) and hopping control channel (HCC) MAC protocol abstractions. For DCC and HCC protocol classes we analyze two distinct strategies of managing active secondary user (SU) connection on the event of primary user (PU) arrival: to buffer the connection until PU leaves, or to switch the existing SU connection to a vacant channel. We come to an interesting conclusion: while, intuitively, OSA MAC protocols that support both SU connection buffering and SU connection switching should obtain the highest throughput, due to the channel switching overhead SU connection buffering alone performs better than the rest of the protocol combinations considered.
ISBN:9781424451890
1424451892
DOI:10.1109/DYSPAN.2010.5457877