TY - JOUR
T1 - Robust cross-layer design of wireless-profiled TCP mobile receiver for vertical handover
AU - Rutagemwa, Humphrey
AU - Pack, Sangheon
AU - Shen, Xuemin
AU - Mark, Jon W.
N1 - Funding Information:
Manuscript received December 18, 2006; revised February 11, 2007. This work was supported by the Natural Sciences and Engineering Research Council (NSERC) of Canada under Strategic Grant 257682. The review of this paper was coordinated by Dr. P. Lin.
PY - 2007/11
Y1 - 2007/11
N2 - In this paper, we consider downward and upward vertical handovers in integrated wireless LAN and cellular networks and address wireless-profiled Transmission Control Protocol premature timeouts due to step increase of round-trip time (RTT) and false fast retransmit due to packet reordering. Specifically, we develop a mobile-receiver centric loosely coupled cross-layer design, which is easy to implement and deploy, backward compatible with the Wireless Application Protocol version 2 architecture, and robust in the absence of perfect cross-layer information. We propose two proactive schemes, called RTT Inflation and RTT Equalization. The RTT Inflation scheme suppresses premature timeouts by carefully inflating retransmission timeout time, and the RTT Equalization scheme prevents false fast retransmit by equalizing the round-trip delay experienced by all packets. We conduct extensive simulations to evaluate the performance in downward and upward vertical handovers. It is demonstrated that the proposed schemes significantly improve the performance in a wide range of network conditions.
AB - In this paper, we consider downward and upward vertical handovers in integrated wireless LAN and cellular networks and address wireless-profiled Transmission Control Protocol premature timeouts due to step increase of round-trip time (RTT) and false fast retransmit due to packet reordering. Specifically, we develop a mobile-receiver centric loosely coupled cross-layer design, which is easy to implement and deploy, backward compatible with the Wireless Application Protocol version 2 architecture, and robust in the absence of perfect cross-layer information. We propose two proactive schemes, called RTT Inflation and RTT Equalization. The RTT Inflation scheme suppresses premature timeouts by carefully inflating retransmission timeout time, and the RTT Equalization scheme prevents false fast retransmit by equalizing the round-trip delay experienced by all packets. We conduct extensive simulations to evaluate the performance in downward and upward vertical handovers. It is demonstrated that the proposed schemes significantly improve the performance in a wide range of network conditions.
KW - Cross layer design
KW - Integrated wireless networks
KW - Mobile communication
KW - Transmission protocols
KW - Vertical handover
KW - Wireless sensor networks
KW - Wireless-profiled Transmission Control Protocol (WP-TCP)
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U2 - 10.1109/TVT.2007.901066
DO - 10.1109/TVT.2007.901066
M3 - Article
AN - SCOPUS:36749027628
VL - 56
SP - 3899
EP - 3911
JO - IEEE Transactions on Vehicular Technology
JF - IEEE Transactions on Vehicular Technology
SN - 0018-9545
IS - 6 II
ER -