Energy-Efficient Operation of a Mobile User in a Multi-tier Cellular Network

Galinina, Olga; Trushanin, Alexey; Shumilov, Vyacheslav; Maslennikov, Roman; Saffer, Zsolt; Andreev, Sergey; Koucheryavy, Yevgeni

doi:10.1007/978-3-642-39408-9_15

Cited by 7 publications

(5 citation statements)

References 6 publications

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“…We remind that a single LTE resource block of bandwidth is 180kHz, which is assumed to be reused across the neighbouring cells. To estimate the achievable data rate, we employ the modified Shannon's formula in the form

R = \frac{w}{\overset{b}{false}} \underset{2}{\log} ((), 1 + \frac{SIR}{\overset{a}{false}})

where w = 180 kHz is the channel bandwidth, while

\overset{a}{false} = 1.2456

and

\overset{b}{false} = 1.3463

are the fitting parameters of the modified Shannon's expression for 3GPP LTE systems borrowed from Galinina et al .…”

Section: Main Numerical Resultsmentioning

confidence: 99%

“…where w D 180 kHz is the channel bandwidth, while a D 1.2456 and b D 1.3463 are the fitting parameters of the modified Shannon's expression for 3GPP LTE systems borrowed from Galinina et al [51]. Given that our obtained SIR is a random variable, and in accordance with (15), we apply the following transformation utilising it to produce the mean and the standard deviation of the channel capacity estimate C…”

Section: Device-to-device Performance Analysismentioning

confidence: 99%

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Analytical performance estimation of network‐assisted D2D communications in urban scenarios with rectangular cells

Samuylov

Ometov

Begishev

et al. 2015

Trans. Emerging Tel. Tech.

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The aggressive spatial reuse of radio resources is considered today as one of the most promising avenues to achieve significant cellular capacity improvements in future fifth‐generation networks. Accordingly, device‐to‐device (D2D) communications are an emerging paradigm that promises to offer these much expected gains without the need for additional investments into the network infrastructure. However, before this attractive technology can be deployed ubiquitously, the research community has to fully understand the extent of its potential performance benefits across typical scenarios of interest. In this work, we consider one such use case of rectangular cells (common for offices, shopping malls, dormitories, etc.) and develop the corresponding analytical methodology for D2D performance evaluation. As our target metric, we employ the signal‐to‐interference (SIR) ratio experienced by a D2D user. To this end, we propose two relatively simple approximations for SIR distribution and hence capture the related parameters, including user throughput. Further, we carefully investigate the most interesting numerical results by making important conclusions on the envisioned operation of our chosen scenario. In particular, we demonstrate that under certain conditions, the SIR behaviour is insensitive to the dimensions of cells, while different propagation exponents ‘scale’ its density function thus allowing to simplify the characterisation of SIR in a wide range of input parameters. Copyright © 2015 John Wiley & Sons, Ltd.

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R = \frac{w}{\overset{b}{false}} \underset{2}{\log} ((), 1 + \frac{SIR}{\overset{a}{false}})

where w = 180 kHz is the channel bandwidth, while

\overset{a}{false} = 1.2456

and

\overset{b}{false} = 1.3463

are the fitting parameters of the modified Shannon's expression for 3GPP LTE systems borrowed from Galinina et al .…”

Section: Main Numerical Resultsmentioning

confidence: 99%

Section: Device-to-device Performance Analysismentioning

confidence: 99%

Analytical performance estimation of network‐assisted D2D communications in urban scenarios with rectangular cells

Samuylov

Ometov

Begishev

et al. 2015

Trans. Emerging Tel. Tech.

Self Cite

View full text Add to dashboard Cite

show abstract

“…where B is the available bandwidth, P rx is the received signal power, and I x is the interference term (not including the noise component). This formula, although widely-adopted in its current form, may be adjusted further with the linear multipliers and thus perfectly match the 3GPP calibration data (see e.g., [26] for details).…”

Section: ) Ul Capacitymentioning

confidence: 99%

Flexible Dual-Connectivity Spectrum Aggregation for Decoupled Uplink and Downlink Access in 5G Heterogeneous Systems

Lema

Pardo

Galinina

et al. 2016

IEEE J. Select. Areas Commun.

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Maintaining multiple wireless connections is a promising solution to boost capacity in fifth-generation (5G) networks, where user equipment is able to consume radio resources of several serving cells simultaneously and potentially aggregate bandwidth across all of them. The emerging dual connectivity paradigm can be regarded as an attractive access mechanism in dense heterogeneous 5G networks, where bandwidth sharing and cooperative techniques are evolving to meet the increased capacity requirements. Dual connectivity in the uplink remained highly controversial, since the user device has a limited power budget to share between two different access points, especially when located close to the cell edge. On the other hand, in an attempt to enhance the uplink communications performance, the concept of uplink and downlink decoupling has recently been introduced. Leveraging these latest developments, our work significantly advances prior art by proposing and investigating the concept of flexible cell association in dual connectivity scenarios, where users are able to aggregate resources from more than one serving cell. In this setup, the preferred association policies for the uplink may differ from those for the downlink, thereby allowing for a truly decoupled access. With the use of stochastic geometry, the dual connectivity association regions for decoupled access are derived and the resultant performance is evaluated in terms of capacity gains over the conventional downlink received power access policies.

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“…Galinina et al (2013) proposed a power control scheme that maximizes the energy efficiency of a mobile device transmitting on several communication channels while ensuring the required minimum quality of service. They obtain the optimal transmit power from the solution of an optimization problem that is based on Shannon's capacity formula.…”

Section: Network Latency and Limited Bandwidth In The Mobile Networkmentioning

confidence: 99%

Energy efficient offloading for competing users on a shared communication channel

Meskar

Todd

Zhao

et al. 2015

2015 IEEE International Conference on Communications (ICC)

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In this thesis we consider a set of mobile users that employ cloud-based computation offloading. In computation offloading, user energy consumption can be decreased by uploading and executing jobs on a remote server, rather than processing the jobs locally. In order to execute jobs in the cloud however, the user uploads must occur over a base station channel which is shared by all of the uploading users. Since the job completion times are subject to hard deadline constraints, this restricts the feasible set of jobs that can be remotely processed, and may constrain the users ability to reduce energy usage. The system is modelled as a competitive game in which each user is interested in minimizing its own energy consumption. The game is subject to the real-time constraints imposed by the job execution deadlines, user specific channel bit rates, and the competition over the shared communication channel. The thesis shows that for a variety of parameters, a game where each user independently sets its offloading decisions always has a pure Nash equilibrium, and a Gauss-Seidel method for determining this equilibrium is introduced. Results are presented which illustrate that the system always converges to a Nash equilibrium using the GaussSeidel method. Data is also presented which show the number of Nash equilibria that are found, the number of iterations required, and the quality of the solutions.We find that the solutions perform well compared to a lower bound on total energy

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Energy-Efficient Operation of a Mobile User in a Multi-tier Cellular Network

Cited by 7 publications

References 6 publications

Analytical performance estimation of network‐assisted D2D communications in urban scenarios with rectangular cells

Analytical performance estimation of network‐assisted D2D communications in urban scenarios with rectangular cells

Flexible Dual-Connectivity Spectrum Aggregation for Decoupled Uplink and Downlink Access in 5G Heterogeneous Systems

Energy efficient offloading for competing users on a shared communication channel

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