Adaptive wireless-network testbed for cognitive radio technology
WiNTECH '06 Proceedings of the 1st international workshop on Wireless network testbeds, experimental evaluation & characterization
Adaptive channel and superframe allocation (ACSA) for 60 GHz wireless networks
Mathematical and Computer Modelling: An International Journal
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The paper describes the design and evaluation ofAd-Hoc extensions to the IEEE 802.15.3 Medium Access Control (MAC) layer for Wireless Personal Area Networks (WPANs). The proposed protocol allows communication between ad-hoc devices without the intervention of any central entity and, at the same time, ensures bounded delays for isochronous traffic. Ad-hoc communication is made possible without the hidden terminal problem. Features from both IEEE 802.15.3 and IEEE 802.11 standards are used - in particular the TDMA structure from 802.15.3 and RTSCTS based contention from 802.11. The protocol includes certain other ingredients like a decentralized synchronization procedure using randomized beaconing, periodically interspersed contention periods, bit maps to convey reservation information and a mechanism to estimate and react to channel errors. The MAC has been simulated in ns-2 and simulation results are reported.