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A Handover Optimization Algorithm for LTE-R System Handover Parameter Prediction and Dynamic Adjustment

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Communications, Signal Processing, and Systems (CSPS 2018)

Part of the book series: Lecture Notes in Electrical Engineering ((LNEE,volume 515))

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Abstract

Handover is one of the key technologies to guarantee the quality of high-speed rail wireless communication. The existing LTE-R handover algorithm has the following deficiencies: 1. The same channel model is adopted for different speed trains; 2. the fixed trigger time (TTT) and hysteresis are used. Thresholds, or segmented adjustments to only the hysteresis thresholds, cannot meet the changing high-speed rail speed requirements for handover performance. In this paper, the following improvements are provided: 1. Different channel models are used for different train speeds in the handover process to more accurately reflect the status of wireless channels at the time of handover. 2. Inverse function is used to establish the speed and trigger time based on the least squares method. The optimal handover parameter configuration at different speeds can be predicted by establishing a functional relationship between (TTT) and the hysteresis threshold. The proposed optimization algorithm based on dynamic handover parameters provides an important reference for the setting of handover parameters for high speed railways at different speeds. The simulation results show that in the LTE-R system, the proposed algorithm can better predict the handover parameter configuration at different speeds, and the handover success rate and the wireless link failure rate index are improved.

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Acknowledgments

This work described in this paper was supported by the National Science and Technology Major Project of the Ministry of Science and Technology of China (Grant No. 2016ZX03001009-003).

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Authors and Affiliations

  1. Ministry of Education, Key Laboratory of Universal Wireless Communications, Beijing University of Posts and Telecommunications, Beijing, 100876, China

    Shuai Zhang, Gang Chuai & Weidong Gao

Authors
  1. Shuai Zhang
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  2. Gang Chuai
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  3. Weidong Gao
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Corresponding author

Correspondence to Shuai Zhang .

Editor information

Editors and Affiliations

  1. Department of Electrical Engineering, University of Texas at Arlington, Arlington, TX, USA

    Qilian Liang

  2. School of Information and Communication Engineering, Dalian University of Technology, Dalian, Liaoning, China

    Xin Liu

  3. School of Information Science and Technology, Dalian Maritime University, Dalian, China

    Zhenyu Na

  4. College of Electronic and Communication Engineering, Tianjin Normal University, Tianjin, China

    Wei Wang

  5. College of Electronic and Communication Engineering, Tianjin Normal University, Tianjin, China

    Jiasong Mu

  6. College of Physical and Electronic Information, Tianjin Normal University, Tianjin, China

    Baoju Zhang

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Zhang, S., Chuai, G., Gao, W. (2019). A Handover Optimization Algorithm for LTE-R System Handover Parameter Prediction and Dynamic Adjustment. In: Liang, Q., Liu, X., Na, Z., Wang, W., Mu, J., Zhang, B. (eds) Communications, Signal Processing, and Systems. CSPS 2018. Lecture Notes in Electrical Engineering, vol 515. Springer, Singapore. https://doi.org/10.1007/978-981-13-6264-4_78

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  • DOI: https://doi.org/10.1007/978-981-13-6264-4_78

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-13-6263-7

  • Online ISBN: 978-981-13-6264-4

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