TY - GEN
T1 - Fair randomized antenna allocation in asynchronous MIMO multi-hop networks
AU - Khattab, Ahmed
AU - Sabharwal, Ashutosh
AU - Knightly, Edward W.
PY - 2008
Y1 - 2008
N2 - Previous work has shown that CSMA-based protocols such as the IEEE 802.11 can yield flow starvation in multi-hop wireless networks. While prior protocol designs alleviated such starvation by utilizing MIMO, they require global synchronization to temporally align transmissions and require per-packet distribution of the complete channel state information. In this paper, we experimentally show that MIMO networks based on pre-802.11n medium access, the state-of-the-art for asynchronous MIMO CSMA, worsen starvation as compared to SISO networks. Consequently, we design an asynchronous MIMO MAC protocol that counters starvation. We show that randomized and non-greedy antenna allocation coupled with local residual capacity estimation results in previously-starving nodes capturing a fair share of system resources while simultaneously exploiting throughput gains available to multi-antenna systems.
AB - Previous work has shown that CSMA-based protocols such as the IEEE 802.11 can yield flow starvation in multi-hop wireless networks. While prior protocol designs alleviated such starvation by utilizing MIMO, they require global synchronization to temporally align transmissions and require per-packet distribution of the complete channel state information. In this paper, we experimentally show that MIMO networks based on pre-802.11n medium access, the state-of-the-art for asynchronous MIMO CSMA, worsen starvation as compared to SISO networks. Consequently, we design an asynchronous MIMO MAC protocol that counters starvation. We show that randomized and non-greedy antenna allocation coupled with local residual capacity estimation results in previously-starving nodes capturing a fair share of system resources while simultaneously exploiting throughput gains available to multi-antenna systems.
UR - http://www.scopus.com/inward/record.url?scp=57849114401&partnerID=8YFLogxK
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U2 - 10.1109/ICCCN.2008.ECP.39
DO - 10.1109/ICCCN.2008.ECP.39
M3 - Conference contribution
AN - SCOPUS:57849114401
SN - 9781424423903
T3 - Proceedings - International Conference on Computer Communications and Networks, ICCCN
SP - 111
EP - 118
BT - 2008 Proceedings of 17th International Conference on Computer Communications and Networks, ICCCN 2008
T2 - 17th International Conference on Computer Communications and Networks, ICCCN 2008
Y2 - 3 August 2008 through 7 August 2008
ER -