Synchronizing TCP with block acknowledgement over multi-hop wireless networks

Authors:
Changhee Joo;Saewoong Bahk;Hyogon Kim
Affiliations:
School of Electrical Engineering and INMC, Seoul National University, Seoul, Korea;School of Electrical Engineering and INMC, Seoul National University, Seoul, Korea;Department of Computer Science and Engineering, Korea University, Seoul, Korea
Venue:
ICOIN'06 Proceedings of the 2006 international conference on Information Networking: advances in Data Communications and Wireless Networks
Year:
2006

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Abstract

While TCP is highly successful in the wire-line Internet, its performance fast degrades as the number of hops increases in multihop wireless networks It is due to not only the half-duplex nature of the wireless medium, but also the two-way feature of TCP In order to improve TCP performance in multihop wireless networks, we pay attention to its cumulative ACK policy Systematically exploiting the redundant nature of the ACK policy, we replace some ACKs with data packets We call this scheme block acknowledgement In consequence, the throughput is significantly increased at the slight weakening of ACK reliability We evaluate the performance of TCP with and without the block acknowledgement through simulations and analysis.