Evaluation and comparison of capacities and costs of Multihop Cellular Networks

Imran, Ali; Tafazolli, Rahim

doi:10.1109/ictel.2009.5158637

Cited by 9 publications

(10 citation statements)

References 6 publications

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“…The related works have considered an additional parameter to account for the cost of the relay insection into cellular systems. Relay station (RS) was introduced into cellular system at a low cost, due to its simple structure [3]. While the subject to the throughput performance is improved by the introduction of RS, the cost of implementation is density of BSs.…”

Section: Introductionmentioning

confidence: 99%

Performance evaluation model with cost of relay for multi-cell cooperative multi-hop cellular system

Naoki

Fujii

2012

2012 IEEE 23rd International Symposium on Personal, Indoor and Mobile Radio Communications - (PIMRC)

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This paper proposes a new evaluation model considering cost based on a cost parameter to evaluate the performance of cellular system. One of the issues of the next generation cellular systems is the improvement of cell-edge throughput performance. In order to improve the cell-edge throughput performance and to extend the coverage area, relay transmission is becoming a promising technique. The cell-edge throughput performance degrades because the signal from the base station (BS) becomes weak due to the large propagation loss and large inter-cell interference. By using relay transmission, cell-edge throughput performance improves because it can reduce the propagation loss. However, the larger number of relay station (RS) increasing the total cost. The cost of each RS is relatively low compared to the cost of the BS because of its simple structure. Thus, the performance evaluation considering RS cost is important in terms of whether to introduce RSs in cellular systems or not. In this paper, we propose a simple evaluation model considering cost to assess the total performance of multi-cell cooperative multi-hop cellular systems.

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Section: Introductionmentioning

confidence: 99%

Performance evaluation model with cost of relay for multi-cell cooperative multi-hop cellular system

Naoki

Fujii

2012

2012 IEEE 23rd International Symposium on Personal, Indoor and Mobile Radio Communications - (PIMRC)

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“…Cloud-based Radio Access Networks (C-RANs) are expected to facilitate the densification of cellular networks through the deployment of distributed Remote Radio Heads (RRHs) [3], [4]. The main characteristic of C-RAN architecture is that the base-band processing unit (BBU) is separate from the distributed RRHs.…”

Section: Introductionmentioning

confidence: 99%

A Game Theoretic Approach for Optimizing Density of Remote Radio Heads in User Centric Cloud-Based Radio Access Network

Romanous¹,

Bitar²,

Zaidi³

et al. 2014

2015 IEEE Global Communications Conference (GLOBECOM)

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A game theoretic approach for optimizing density of remote radio heads in user centric cloud-based radio access network. In: 2015 IEEE Global Communications Conference (GLOBECOM 2015 ReuseUnless indicated otherwise, fulltext items are protected by copyright with all rights reserved. The copyright exception in section 29 of the Copyright, Designs and Patents Act 1988 allows the making of a single copy solely for the purpose of non-commercial research or private study within the limits of fair dealing. The publisher or other rights-holder may allow further reproduction and re-use of this version -refer to the White Rose Research Online record for this item. Where records identify the publisher as the copyright holder, users can verify any specific terms of use on the publisher's website. TakedownIf you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing eprints@whiterose.ac.uk including the URL of the record and the reason for the withdrawal request. Abstract-In this paper, we develop a game theoretic formulation for empowering cloud enabled HetNets with adaptive Self Organizing Network (SON) capabilities. SON capabilities for intelligent and efficient radio resource management is a fundamental design pillar for the emerging 5G cellular networks. The C-RAN system model investigated in this paper consists of ultra-dense remote radio heads (RRH) overlaid by central baseband units that can be collocated with much less densely deployed overlaying macro base stations (BS). It has been recently demonstrated that under a user centric scheduling mechanism, C-RAN inherently manifests the trade-off between Energy Efficiency (EE) and Spectral Efficiency (SE) in terms of RRH density. The key objective of the game theoretic framework developed in this paper is to dynamically optimize the trade-off between the EE and the SE of the C-RAN. More specifically, for an ultra-dense C-RAN based HetNet, the density of active RRHs should be carefully dimensioned to maximize the SE. However, the density of RRHs which maximizes the SE may not necessarily be optimal in terms of the EE. In order to strike a balance between these two performance determinants, we develop a game theoretic formulation by employing a Nash bargaining framework. The two metrics of interest, SE and EE, are modeled as virtual players in a bargaining problem and the Nash bargaining solution for RRH density is determined. In the light of the optimization outcome we evaluate corresponding key performance indicators through numerical results. These results offer insights for a C-RAN designer on how to optimally design a SON mechanism to achieve a desired trade-off level between the SE and the EE in a dynamic fashion.

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“…i.e. , with due to reasons explained in [10]. It is important to note that, variable power consumption does not increase with number of sectors.…”

Section: Power Consumptionmentioning

confidence: 99%

A novel Self Organizing framework for adaptive Frequency Reuse and Deployment in future cellular networks

Imran

Tafazolli

2010

21st Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications

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Recent research on Frequency Reuse (FR) schemes for OFDM/OFDMA based cellular networks (OCN) suggest that a single fixed FR cannot be optimal to cope with spatiotemporal dynamics of traffic and cellular environments in a spectral and energy efficient way. To address this issue this paper introduces a novel Self Organizing framework for adaptive Frequency Reuse and Deployment (SO-FRD) for future OCN including both cellular (e.g. LTE) and relay enhanced cellular networks (e.g. LTE Advance). In this paper, an optimization problem is first formulated to find optimal frequency reuse factor, no of sectors per site and number of relays per site. The objective is designed as an adaptive utility function which incorporates three major system objectives 1) spectral efficiency 2) fairness, and 3) energy efficiency. An appropriate metric for each of the three constituent objectives of utility function is then derived. Solution is provided by evaluating these metrics through a combination of analysis and extensive system level simulations for all feasible FRD's. Proposed SO-FRD framework uses this flexible utility function to switch to particular FRD strategy, which is suitable for system's currant state according to predefined or self learned performance criterion. The proposed metrics capture the effect of all major optimization parameters like frequency reuse factor, number of sectors and relay per site, and adaptive coding and modulation. Based on the results obtained, interesting insights into the tradeoff among these factors is also provided.

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Evaluation and comparison of capacities and costs of Multihop Cellular Networks

Cited by 9 publications

References 6 publications

Performance evaluation model with cost of relay for multi-cell cooperative multi-hop cellular system

Performance evaluation model with cost of relay for multi-cell cooperative multi-hop cellular system

A Game Theoretic Approach for Optimizing Density of Remote Radio Heads in User Centric Cloud-Based Radio Access Network

A novel Self Organizing framework for adaptive Frequency Reuse and Deployment in future cellular networks

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