University of Oulu

O. Semiari, W. Saad, M. Bennis and B. Maham, "Mobility Management for Heterogeneous Networks: Leveraging Millimeter Wave for Seamless Handover," GLOBECOM 2017 - 2017 IEEE Global Communications Conference, Singapore, 2017, pp. 1-6. doi: 10.1109/GLOCOM.2017.8254681

Mobility management for heterogeneous networks : leveraging millimeter wave for seamless handover

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Author: Semiari, Omid1; Saad, Walid2; Bennis, Mehdi3;
Organizations: 1Department of Electrical Engineering, Georgia Southern University, Statesboro, GA, USA
2Wireless@VT, Bradley Department of Electrical and Computer Engineering, Virginia Tech, Blacksburg, VA, USA
3Centre for Wireless Communications, University of Oulu, Finland
4Department of Electrical and Electronic Engineering, Nazarbayev University, Astana, Kazakhstan
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.4 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2017
Publish Date: 2018-08-06


One of the most promising approaches to overcome the uncertainty and dynamic channel variations of millimeter wave (mmW) communications is to deploy dual-mode base stations that integrate both mmW and microwave (μW) frequencies. In particular, if properly designed, such dual-mode base stations can enhance mobility and handover in highly mobile wireless environments. In this paper, a novel approach for analyzing and managing mobility in joint μW-mmW networks is proposed. The proposed approach leverages device-level caching along with the capabilities of dual-mode base stations to minimize handover failures and provide seamless mobility. First, fundamental results on the caching capabilities, including caching probability and cache duration, are derived for the proposed dual-mode network scenario. Second, the average achievable rate of caching is derived for mobile users. Then, the impact of caching on the number of handovers (HOs) and the average handover failure (HOF) is analyzed. The derived analytical results suggest that content caching will reduce the HOF and enhance the mobility management in heterogeneous wireless networks with mmW capabilities. Numerical results corroborate the analytical derivations and show that the proposed solution provides significant reductions in the average HOF, reaching up to 45%, for mobile users moving with relatively high speeds.

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Series: IEEE Global Communications Conference
ISSN: 2334-0983
ISSN-L: 2334-0983
ISBN: 978-1-5090-5019-2
ISBN Print: 978-1-5090-5020-8
Article number: 8254681
DOI: 10.1109/GLOCOM.2017.8254681
Host publication: 2017 IEEE Global Communications Conference (GLOBECOM) Proceedings Singapore 4 – 8 December 2017
Conference: IEEE Global Communications Conference
Type of Publication: A4 Article in conference proceedings
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This research was supported by the U.S. National Science Foundation under Grants CNS-1460316, CNS-1513697, IIS-1633363, and the Academy of Finland CARMA project.
Academy of Finland Grant Number: 289611
Detailed Information: 289611 (Academy of Finland Funding decision)
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