DocumentCode :
3279637
Title :
Multi-Carrier Burst Contention (MCBC): Scalable Medium Access Control for Wireless Networks
Author :
Roman, Bogdan ; Stajano, Frank ; Wassell, Ian ; Cottingham, David
Author_Institution :
Univ. of Cambridge, Cambridge
fYear :
2008
fDate :
March 31 2008-April 3 2008
Firstpage :
1667
Lastpage :
1672
Abstract :
With the rapid growth of WLAN capability for mobile devices such as laptops, handhelds, mobile phones and vehicles, we will witness WLANs with very large numbers of active nodes for which very efficient medium access control techniques will be needed to cope with high loads and mobility. We propose a high performance solution based on an innovative node elimination algorithm that uses short and unmodulated bursts of energy during contention - no data is exchanged. We also present a modified OFDM PHY layer, based on IEEE 802.11a, which allows sensing and bursting on individual subcarriers. We show that the protocol maintains a very low overhead and collision probability which lead to high and virtually constant network throughput at all analyzed network loads, even beyond 500 nodes. The protocol is validated by extensive simulation, comparing it against the IEEE 802.11a and SYN-MAC protocols.
Keywords :
OFDM modulation; access control; mobile computing; wireless LAN; IEEE 802.11a; OFDM; SYN-MAC protocols; WLAN; mobile devices; multicarrier burst contention; node elimination; scalable medium access control; Analytical models; Media Access Protocol; Network topology; Nominations and elections; OFDM; Peer to peer computing; Physical layer; Throughput; Time division multiple access; Wireless networks;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Wireless Communications and Networking Conference, 2008. WCNC 2008. IEEE
Conference_Location :
Las Vegas, NV
ISSN :
1525-3511
Print_ISBN :
978-1-4244-1997-5
Type :
conf
DOI :
10.1109/WCNC.2008.298
Filename :
4489329
Link To Document :
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