Experimental Evaluation of Dynamic Licensed Shared Access Operation in Live 3GPP LTE System

Mašek, Pavel; Mokrov, Evgeny; Pyattaev, Alexander; Zeman, Krystof; Ponomarenko-Timofeev, Aleksei; Samuylov, Andrey; Sopin, Eduard; Hošek, Jiří; Gudkova, Irina А.; Andreev, Sergey; Novotný, Vít; Koucheryavy, Yevgeni; Samouylov, Konstantin

doi:10.1109/glocom.2016.7841826

Cited by 8 publications

(10 citation statements)

References 10 publications

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“…However, many of these past activities considered near-static LSA operation with longer-term allocations since they primarily addressed the technical feasibility of LSA implementation [15]. Continuing our initial work in [16] and more recent technology groundwork in [17], we here complement these earlier initiatives with a new perspective on highly dynamic spectrum management within the LSA framework. In this paper, we specifically emphasize the QoS aspects and the corresponding service reliability performance as our work unveils the practical limits of dynamic LSA operation based on a real-world trial in a live LTE system.…”

Section: Introductionmentioning

confidence: 94%

“…Aiming to lay the groundwork for this, we first identify the main functions and interfaces necessary for implementing dynamic LSA mechanisms (see Figure 2). Given that we have recently outlined the core principles behind the dynamic LSA framework as a proof-of-concept study in [17], we build the present system architecture proposal on our rich hands-on experience acquired then. To this end, we rely on a full-fledged cellular system deployment at Brno University of Technology (BUT), Czech Republic, which offers an excellent example of a contemporary 3GPP LTE target system.…”

Section: Proposed Components and Functionalitymentioning

confidence: 99%

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A Practical Perspective on 5G‐Ready Highly Dynamic Spectrum Management with LSA

Mašek

Mokrov

Zeman

et al. 2018

Wireless Communications and Mobile Computing

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A diversity of wireless technologies will collaborate to support the fifth-generation (5G) communication networks with their demanding applications and services. Despite decisive progress in many enabling solutions, next-generation cellular deployments may still suffer from a glaring lack of bandwidth due to inefficient utilization of radio spectrum, which calls for immediate action. To this end, several capable frameworks have recently emerged to all help the mobile network operators (MNOs) leverage the abundant frequency bands that are utilized lightly by other incumbents. Along these lines, the recent Licensed Shared Access (LSA) regulatory framework allows for controlled sharing of spectrum between an incumbent and a licensee, such as the MNO, which coexist geographically. This powerful concept has been subject to several early technology demonstrations that confirm its implementation feasibility. However, the full potential of LSA-based spectrum management can only become available if it is empowered to operate dynamically and at high space-time-frequency granularity. Complementing the prior efforts, we in this work outline the functionality that is required by the LSA system to achieve the much needed flexible operation as well as report on the results of our respective live trial that employs a full-fledged commercial-grade cellular network deployment. Our practical results become instrumental to facilitate more dynamic bandwidth sharing and thus promise to advance on the degrees of spectrum utilization in future 5G systems without compromising the service quality of their users.

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Section: Introductionmentioning

confidence: 94%

Section: Proposed Components and Functionalitymentioning

confidence: 99%

A Practical Perspective on 5G‐Ready Highly Dynamic Spectrum Management with LSA

Mašek

Mokrov

Zeman

et al. 2018

Wireless Communications and Mobile Computing

Self Cite

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“…Queueing theory is also used in [8] to model the LSA operation. The authors of [9] presented experimental evaluations of dynamic LSA operation in an LTE testbed. Furthermore, the impact of dynamic nature of the incumbent (airport) telemetry traffic together with the primary cellular network traffic is modelled in [10] using nonhomogeneous queues.…”

Section: Introductionmentioning

confidence: 99%

Maximum Achievable Sum Rate in Highly Dynamic Licensed Shared Access

Onidare

Navaie

2019

2019 IEEE 89th Vehicular Technology Conference (VTC2019-Spring)

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In this paper, we consider a power allocation scheme that maximizes the sum spectral efficiency of the licensee in a dynamic Licensed Shared Access (LSA) system. In particular, our focus is on the time intervals in which the incumbent system is active in the spectrum. We derive an expression for the interference distribution of the licensee, e.g., a mobile network operator, utilizing a spectrum belonging to an airport incumbent under the LSA spectrum sharing. Formulating an optimization problem to maximize the sum spectrum efficiency subject to the interference threshold constraint at the licensee, we then show its convexity, and obtain its optimal solutions. We further investigate the impact of sum rate maximization on the fairness of network resource allocations. Simulation results show a significant gain in the achievable spectrum efficiency, especially during the intervals in which the incumbent system is active in the LSA band. This paper provides quantitative insights on the maximum achievable sum rate in an LSA system in which both the licensee and the incumbent systems are active at the same time.

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“…It can also involve dissimilar coordination techniques. Actively considered by telecom operators, dynamic spectrum sharing can enable intertechnology coexistence in licensed bands [12][13][14]. Currently, the efficiency of spectrum sharing mechanisms remains limited by preset priority constraints of the primary license holder.…”

Section: Background On Spectrum Scarcity and Sharingmentioning

confidence: 99%

“…where is the price paid by the RSUs and CC stands for the compensation cost in (12). For the investigated pricing function, there are two important cases:…”

Section: Utilizedmentioning

confidence: 99%

Dynamic Resource Sharing in 5G with LSA: Criteria‐Based Management Framework

Sadreddini

Mašek

Çavdar

et al. 2018

Wireless Communications and Mobile Computing

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Owing to a steadily increasing demand for efficient spectrum utilization as part of the fifth-generation (5G) cellular concept, it becomes crucial to revise the existing radio spectrum management techniques and provide more flexible solutions for the corresponding challenges. A new wave of spectrum policy reforms can thus be envisaged by producing a paradigm shift from static to dynamic orchestration of shared resources. The emerging Licensed Shared Access (LSA) regulatory framework enables flexible spectrum sharing between a limited number of users that access the same frequency bands, while guaranteeing better interference mitigation. In this work, an advanced user satisfaction-aware spectrum management strategy for dynamic LSA management in 5G networks is proposed to balance both the connected user satisfaction and the Mobile Network Operator (MNO) resource utilization. The approach is based on the MNO decision policy that combines both pricing and rejection rules in the implemented processes. Our study offers a classification built over several types of users, different corresponding attributes, and a number of MNO's decision scenarios. Our investigations are built on Criteria-Based Resource Management (CBRM) framework, which has been specifically designed to facilitate dynamic LSA management in 5G mobile networks. To verify the proposed model, the results (spectrum utilization, estimated Secondary User price for the future connection, and user selection methodology in case of user rejection process) are validated numerically as we yield important conclusions on the applicability of our approach, which may offer valuable guidelines for efficient radio spectrum management in highly dynamic and heterogeneous 5G environments.

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Experimental Evaluation of Dynamic Licensed Shared Access Operation in Live 3GPP LTE System

Cited by 8 publications

References 10 publications

A Practical Perspective on 5G‐Ready Highly Dynamic Spectrum Management with LSA

A Practical Perspective on 5G‐Ready Highly Dynamic Spectrum Management with LSA

Maximum Achievable Sum Rate in Highly Dynamic Licensed Shared Access

Dynamic Resource Sharing in 5G with LSA: Criteria‐Based Management Framework

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