Mobility-aware drop precedence scheme in DiffServ-enabled mobile network systems

Authors:
Bongkyo Moon
Affiliations:
Dongguk Univ-Seoul, Dept. of Computer Science and Engineering, Seoul, South Korea
Venue:
EUNICE'10 Proceedings of the 16th EUNICE/IFIP WG 6.6 conference on Networked services and applications: engineering, control and management
Year:
2010

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Abstract

In DiffServ-enabled mobile network systems, TCP sender may time out if packet loss occurs at handover event. Thus, TCP window size may be reduced temporarily due to packet loss. Under overloaded traffic situation in local IP-managed network, furthermore, the sending rate of TCP packets that a mobile host generates right after handover may not be enough to keep its contract service rate on SLA (service level agreement). Therefore, giving temporal priority to the packets in a handover flow can compensate for the reduction of packet sending rate after handover. In this paper, we propose a mobility-aware drop precedence scheme in order to alleviate the performance loss from temporal disconnection or the reduction of sending rate.