REM-based handover algorithm for next-generation multi-tier cellular networks

Cristo Suarez-Rodriguez, B. A. Jayawickrama, Faouzi Bader, E. Dutkiewicz, Michael Heimlich

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

5 Citations (Scopus)

Abstract

The strongest-cell criterion has been extensively used for handover algorithms during the last cellular-network generations. When network topologies become multi-layered, it results in abrupt behaviors such as the ping-pong effect as a consequence of the power gap between tiers and their irregular deployment. This effect not only affects users' quality of experience but also introduces a significant network overhead. Therefore, we propose an original handover algorithm based on predicted incomplete channel states from a Radio Environment Map to reduce this effect. The proposed algorithm is user triggered, network assisted, and fully backward compatible with LTE-A. Moreover, we evaluate the performance of our proposed algorithm against LTE-A in a two-tier cellular network for different user speeds following the guidelines outlined by the 3GPP on diverse matters (channel, mobility, wrapping, etc.). When applying realistic timing, our results reveal a highly substantial improvement in the number of ping-pong handovers regardless of the handover policy adopted in comparison to LTE-A without sacrificing users' experience; for instance, we obtain at least an order of magnitude decrease in the ping-pong rate at the expense of losing less than 9 percent in spectral efficiency.

Original languageEnglish
Title of host publication2018 IEEE Wireless Communications and Networking Conference (WCNC)
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages6
ISBN (Electronic)9781538617342
ISBN (Print)9781538617359
DOIs
Publication statusPublished - 2018
Event2018 IEEE Wireless Communications and Networking Conference, WCNC 2018 - Barcelona, Spain
Duration: 15 Apr 201818 Apr 2018

Conference

Conference2018 IEEE Wireless Communications and Networking Conference, WCNC 2018
CountrySpain
CityBarcelona
Period15/04/1818/04/18

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  • Cite this

    Suarez-Rodriguez, C., Jayawickrama, B. A., Bader, F., Dutkiewicz, E., & Heimlich, M. (2018). REM-based handover algorithm for next-generation multi-tier cellular networks. In 2018 IEEE Wireless Communications and Networking Conference (WCNC) Piscataway, NJ: Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/WCNC.2018.8377242