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- W2061587368 abstract "Vertical handoff provides continuous and seamless transfer between various wireless mobile networks, which have different data transmission techniques and standards. In contrast to the horizontal handoff, the vertical handoff should consider not only the strength of signal power but also QoS classes, network bandwidth and service types, etc. Most of the previous works proposed the Received Signal Strength (RSS) based methods to set thresholds for making the decision and yielded serious ping-pong effect when the mobile node moves around the overlay area of two heterogeneous wireless networks. The ping-pong effect causes unnecessary handoff and brings several drawbacks, including low network throughput, long handoff delay, and high dropping probability. Therefore, in this paper, we propose an efficient cost-based vertical handoff algorithm to reduce unnecessary handoffs while increasing network throughput, decreasing handoff delay, and avoiding connection dropping. Two primary motivations of this paper include the prediction of node mobility from RSS and the adaptive cost-based competitive on-line (COL) method to determine the optimal network to handoff to from all available candidates. Furthermore, message flows of vertical handoffs between 3G/UMTS and WLAN as well as horizontal handoff between WLANs with MIPv6 are expressed in detail. Finally, the handoff delays are analyzed for the proposed MIPv6 handoff. Numerical results demonstrate that the proposed cost-based approach outperforms other approaches in the number of vertical handoffs and connection dropping while yielding competitive throughput." @default.
- W2061587368 created "2016-06-24" @default.
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- W2061587368 date "2006-07-03" @default.
- W2061587368 modified "2023-09-24" @default.
- W2061587368 title "Minimizing roaming overheads for vertical handoff in heterogeneous wireless mobile networks" @default.
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- W2061587368 doi "https://doi.org/10.1145/1143549.1143740" @default.
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