Abstract
Massive Multiple Input Multiple Output (MIMO) is an essential component for future wireless cellular networks. One of its biggest advantages is to use the 5G spectrum more intelligently by extending both coverage (via high gain adaptive beamforming) and capacity (via high order spatial multiplexing). In this paper, we evaluate the performance of Time-division duplex (TDD)-based massive MIMO deployment scenario in one of the commercial sites in Turkey. Our experimental results reveal three major contributions: (i) TDD-based massive MIMO in 10 Mhz reveals up to 212% and 50% higher cell throughput compared to Frequency-division duplex (FDD)-based MIMO deployments with 10 Mhz and 20 Mhz respectively. The Downlink (DL) throughput is also observed to be better in mid/far points. (ii) Together with the usage of TDD-based massive MIMO inside the same commercial site, median values of total cell traffic, Uplink (UL) Spectral Efficiency (SE) and DL schedule Transmission Time Interval (TTI) duty cycle have improved 38%, 9% and 14.5% compared to FDD-based MIMO scenario respectively. (iii) Finally, we address some of the challenges of the massive MIMO deployments and the possible trade-offs that can be observed in terms of Radio Resource Control (RRC)-connected User Equipments (UEs), cell throughput, available Sounding Reference Signal (SRS) resources and pairing opportunities provided by massive MIMO.
Highlights
The race to 5G deployments is heating up and brand new 5G technologies are beginning to become reality on top of Mobile Network Operators (MNOs)’ infrastructures [1]
This paper has presented a real-world deployment analysis of massive Multiple Input Multiple Output (MIMO) in a commercial network environment based in Turkey
The experiments results revealed that Time-division duplex (TDD)-based massive MIMO in 10 Mhz bandwidth reveals up to 212% and 50% higher cell throughput than Frequency-division duplex (FDD)-based MIMO in 10 and 20 Mhz bandwidth respectively
Summary
The race to 5G deployments is heating up and brand new 5G technologies are beginning to become reality on top of Mobile Network Operators (MNOs)’ infrastructures [1]. Massive MIMO on the other hand, utilizes coordinated antenna elements to serve multiple users simultaneously via relatively simple scheduling and receiver algorithms that will allow multiple signal beams to be directed towards users This enhances coverage while providing better indoor penetration. Massive MIMO can bring huge benefits to MNOs on IMT-2020 defined use cases such as Enhanced Mobile Broadband (eMBB) in terms of providing more bandwidth and Machine-Type of Communications (MTC) and Ultra-Reliable Low-Latency Communication (URLLC) in terms of letting more user connectivity in a reliable manner. These can increase user experience and encourage users to consume more data.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
