Improving TCP performance over wireless networks at the link layer
Mobile Networks and Applications
ACM Transactions on Computer Systems (TOCS)
A rate-adaptive MAC protocol for multi-Hop wireless networks
Proceedings of the 7th annual international conference on Mobile computing and networking
Opportunistic media access for multirate ad hoc networks
Proceedings of the 8th annual international conference on Mobile computing and networking
Ad-hoc On-Demand Distance Vector Routing
WMCSA '99 Proceedings of the Second IEEE Workshop on Mobile Computer Systems and Applications
IEEE 802.11n: enhancements for higher throughput in wireless LANs
IEEE Wireless Communications
MCCA: A high-throughput MAC strategy for next-generation WLANs
IEEE Wireless Communications
IEEE 802.11n MAC frame aggregation mechanisms for next-generation high-throughput WLANs
IEEE Wireless Communications
Block-switched networks: a new paradigm for wireless transport
NSDI'09 Proceedings of the 6th USENIX symposium on Networked systems design and implementation
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As data rates supported by the physical layer increase, PHY and especially MAC overheads increasingly dominate the throughput achievable by wireless networks. A promising approach for reducing these overheads is to aggregate a number of frames together into a single transmission. The 802.11n standard uses such an approach for unicast frames. We present the design of a system that can aggregate both unicast and broadcast frames. Further, the system can classify TCP ACK segments so that they can be aggregated with TCP data flowing in the opposite direction. A novel aspect of our work is that we implement and validate our design not through simulation, but rather using our wireless node prototype, Hydra, which supports a high performance PHY based on 802.11n. Our validation shows significant improvements in throughput for each kind of aggregation we support.