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Handover Optimization Algorithm in LTE High-Speed Railway Environment

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Abstract

The traditional A3 event-based HO algorithms are mainly designed for the low speed (<30 m/s) networks. That aren’t suitable for the high-speed railway scenario which the link quality may deteriorate sharply and the wireless channel environment may become unstable with the increase of velocity. To overcome the disadvantages of the handover algorithms in LTE high-speed railway networks, we proposed a handover optimization algorithm based on statistics, where we not only consider reference signal received power and reference signal received quality at the same time but also the rate of cell resources change. The simulation results show that the proposed algorithm has higher handover success rate and lower handover numbers. Thus unnecessary handover is reduced by up to 47 % and the novel algorithm provides success rate of 0.5–13.9 % higher than the classical A3 algorithm under different conditions of velocity, and greatly improve handover performance.

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Acknowledgments

This work was supported by the Natural Science Foundation of Hunan project ring-resonator-spectroscopic-based detection mechanism and methods of gas pollution, Project No. 14JJ2013 and Natural Science Foundation of Xinjiang project Detection theory and methods of gas pollution, Project No. 2013211A035.

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Authors and Affiliations

  1. Changsha, Hunan, China

    Fang Yang, Honggui Deng, Fangqing Jiang & Xu Deng

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  1. Fang Yang
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  2. Honggui Deng
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  3. Fangqing Jiang
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  4. Xu Deng
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Correspondence to Honggui Deng.

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Yang, F., Deng, H., Jiang, F. et al. Handover Optimization Algorithm in LTE High-Speed Railway Environment. Wireless Pers Commun 84, 1577–1589 (2015). https://doi.org/10.1007/s11277-015-2704-8

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  • DOI: https://doi.org/10.1007/s11277-015-2704-8

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