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Time-Adaptive Vertical Handoff Triggering Methods for Heterogeneous Systems

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Advanced Parallel Processing Technologies (APPT 2009)

Part of the book series: Lecture Notes in Computer Science ((LNTCS,volume 5737))

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Abstract

Vertical handoff decision is an important process in heterogeneous systems. In order to find an appropriate time to trigger a handoff, deciding a stability period before performing the handoff has been studied formerly. In this paper, we introduce the definition of the residence time of a handoff zone (HZ) into the stability period decision method. Then two algorithms, Stability Period Decision Scheme with HZ Residence Time (SPDRT) and Stability Period Decision Scheme Based on Fuzzy Logic (SPDFL), are proposed to adjust the stability period dynamically. Moreover, we apply the two schemes to solve the handoff call queuing problem. Simulation results show that the proposed methods can decrease handoff call dropping rate effectively and adjust the stability period intelligently and sensibly.

This work is supported by the National Natural Science Foundation of China under Grant No. 60673159, No. 70671020 and No. 60802023; the Key Project of Chinese Ministry of Education under Grant No. 108040; the National High-Tech Research and Development Plan of China under Grant No. 2007AA041201; Specialized Research Fund for the Doctoral Program of Higher Education under Grant No. 20060145012, No. 20070145017 and No. 20070145096.

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© 2009 Springer-Verlag Berlin Heidelberg

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Song, Q., Wen, Z., Wang, X., Guo, L., Yu, R. (2009). Time-Adaptive Vertical Handoff Triggering Methods for Heterogeneous Systems. In: Dou, Y., Gruber, R., Joller, J.M. (eds) Advanced Parallel Processing Technologies. APPT 2009. Lecture Notes in Computer Science, vol 5737. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-03644-6_23

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  • DOI: https://doi.org/10.1007/978-3-642-03644-6_23

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-03643-9

  • Online ISBN: 978-3-642-03644-6

  • eBook Packages: Computer ScienceComputer Science (R0)

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