Abstract
An important property of high altitude platform station (HAPS) Universal Mobile Telecommunications Systems (UMTS) is that unlike terrestrial tower based systems, interference is dependent on the antenna characteristics of HAPS rather than the terrain features (i.e., shadowing) in the service area. In this paper, we exploit this unique HAPS property to propose simple and effective adaptive softer handover schemes for HAPS UMTS. Simulation results obtained show that our proposed handover schemes provide improved system performance as compared to the existing conventional non-adaptive softer handover scheme proposed for terrestrial UMTS.
The original version of this chapter was revised: The copyright line was incorrect. This has been corrected. The Erratum to this chapter is available at DOI: 10.1007/978-0-387-35618-1_37
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ITU, “Revised technical and operational parameters for typical IMT-2000 terrestrial systems using high altitude platform stations and CDMA radio transmission technologies,” ITU Document 8-1/307-E, March 1999.
Y.C. Foo, W.L. Lim, R. Tafazolli and L. Barclay, “Other-cell interference and reverse link capacity of High Altitude Platform Station (HAPS) CDMA system,” Electron. Len., vol. 36, pp. 1881 - 1882, Oct. 2000.
W.L. Lim, Y.C. Foo, R. Tafazolli and B.G. Evans, “Softer handover performance of high altitude platform station W-CDMA system” in Proc. of WPMC’01, Aalborg, Denmark, pp. 99 —104, Sep. 2001.
Y.C. Foo, W.L. Lim and R. Tafazolli, “Centralized downlink call admission control for high altitude platform station UMTS with onboard power resource sharing,” accepted for IEEE VTC Fall 2002, Vancouver, Canada, Sep. 2002.
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© 2003 IFIP International Federation for Information Processing
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Lim, W.L., Foo, Y.C., Tafazolli, R. (2003). Softer Handover Schemes for High Altitude Platform Station (HAPS) UMTS. In: Omidyar, C.G. (eds) Mobile and Wireless Communications. IFIP — The International Federation for Information Processing, vol 106. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-35618-1_15
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DOI: https://doi.org/10.1007/978-0-387-35618-1_15
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4757-1033-5
Online ISBN: 978-0-387-35618-1
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