University of Oulu

K. Hiltunen and M. Matinmikko-Blue, "Interference Control Mechanism for 5G Indoor Micro Operators Utilizing Dynamic TDD," 2018 IEEE 29th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), Bologna, 2018, pp. 1-7. doi: 10.1109/PIMRC.2018.8580828

Interference control mechanism for 5G indoor micro operators utilizing dynamic TDD

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Author: Hiltunen, Kimmo1; Matinmikko-Blue, Marja1
Organizations: 1Centre for Wireless Communications, University of Oulu, Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.5 MB)
Persistent link:
Language: English
Published: Institute of Electrical and Electronics Engineers, 2018
Publish Date: 2019-02-01


Future 5G networks will increasingly target local small cell deployments complementing the coverage of the existing outdoor networks. To make the high-quality in-building deployments more cost-efficient, and to promote innovation and competition in the market, new local business and spectrum authorization models are needed. Recently proposed micro operator concept allows the establishment of building-specific 5G networks by different stakeholders through the availability of local spectrum micro licensing. However, in order to make the concept of local high-quality 5G networks feasible, impact of the inter-operator interference on the performance of the victim micro operator needs to be understood. This paper presents system simulation results demonstrating how the required minimum separation distance between two uncoordinated micro operators utilizing dynamic TDD in the 3.6 GHz band can be decreased by controlling the base station transmission power of the interfering network based on the measurements performed by the victim network. Without any interference control mechanism the required minimum separation distance can become as large as 400 meters, but with the proposed mechanism the required separation distance can be more than halved, or even made equal to zero. It is also shown that the interference threshold resulting in the smallest minimum separation distance is highly scenario-dependent: it will depend both on the network layout and load of both the victim and the interfering micro operator.

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Series: IEEE International Symposium on Personal, Indoor, and Mobile Radio Communications workshops
ISSN: 2166-9570
ISSN-E: 2166-9589
ISSN-L: 2166-9570
ISBN: 978-1-5386-6009-6
ISBN Print: 978-1-5386-6010-2
Pages: 1 - 7
DOI: 10.1109/PIMRC.2018.8580828
Host publication: 2018 IEEE 29th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)
Conference: IEEE Annual International Symposium on Personal, Indoor and Mobile Radio Communications
Type of Publication: A4 Article in conference proceedings
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This research in the “Micro-operator concept for boosting local service delivery in 5G (uO5G)” project has been financially supported by Business Finland and by Academy of Finland 6Genesis Flagship (grant 318927).
Academy of Finland Grant Number: 318927
Detailed Information: 318927 (Academy of Finland Funding decision)
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