TCP improvement in multi-radio multi-channel multi-hop networks

Authors:
Xiaofei Wang;Taekyoung Kwon;Yanghee Choi
Affiliations:
Seoul National University, Seoul, Republic of Korea;Seoul National University, Seoul, Republic of Korea;Seoul National University, Seoul, Republic of Korea
Venue:
CoNEXT '08 Proceedings of the 2008 ACM CoNEXT Conference
Year:
2008

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Abstract

In this paper, we seek to enhance the poor performance of original TCP in wireless multi-hop environments due to the intra-flow contention between TCP-DATA and TCP-ACK packets. Assuming multi-radio multi-channel networks, where each station is equipped with multiple radios and the same number of orthogonal channels, we propose to use virtually different paths with different channel assignments for TCP-DATA and TCP-ACK transmissions. Simulations show that TCP performance can be improved significantly since TCP-DATA and TCP-ACK paths hardly interfere with each other.