A new TCP reordering mechanism for downward vertical handover

Authors:
HoJin Kim;SuKyoung Lee
Affiliations:
Dept. of Computer Science, Yonsei University, Seoul, Korea;Dept. of Computer Science, Yonsei University, Seoul, Korea
Venue:
IPOM'07 Proceedings of the 7th IEEE international conference on IP operations and management
Year:
2007

Citing 2
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Abstract

In integrated WLAN and cellular networks, a downward vertical handover (DVHO) causes an abrupt change so that packets which are transmitted through both networks can be out of ordered. Reordering problem triggers unnecessary fast retransmission causing throughput degradation. Thus, we propose a TCP reordering mechanism for DVHO, that suppresses unnecessary retransmissions due to the duplicate acknowledgements (dupacks). The simulation shows that the proposed TCP achieves better performance compared with nodupack with SACK.