Optimization of Coverage in 5G Self-Organizing Small Cell Networks

Chen, Yu; Zhi, Guo; Yang, Xiuqing; Hu, Yi; Zhu, Qinghua

doi:10.1007/s11036-017-0983-x

Cited by 8 publications

(13 citation statements)

References 25 publications

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“…Although Algorithm 1 is quite efficient for solving problems of type (33), we also can formulate another optimization problem equivalent to problem (33) but that allows the search for its optimal solution following another strategy. For this, we present the feasibility problem in (38), where it is an ILP problem for a specific value of ∈ R. Then, introducing the variable , (33) can be equivalently reformulated as…”

Section: R(y)mentioning

confidence: 99%

“…We can demonstrate that, through (38), it is possible to find the highest value of searching it in a given interval following a process based on the bisection method (BIM). This result is presented in Proposition 3.…”

Section: R(y)mentioning

confidence: 99%

“…Proposition 3. Let ⋆ be the highest value such that problem (38) is feasible. Assuming that ⋆ ∈ [a (0) , b (0) ], then it is possible to find ⋆ through a sequence of feasibility tests on the constraints in problem (38) by changing according to the bisection method.…”

Section: R(y)mentioning

confidence: 99%

See 2 more Smart Citations

Energy‐efficient radio resource allocation for dual‐hop relay‐assisted orthogonal frequency division multiple access systems with quality of service provisioning

Saraiva

Lima

Pessoa

et al. 2021

Trans Emerging Tel Tech

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Besides the conventional spectral efficiency metric, energy efficiency (EE) has been adopted as one of the new mandatory performance metrics for green future mobile networks. In this sense, in this article we study energy-efficient radio resource allocation for dual-hop orthogonal frequency division multiple access relay networks considering multiple relays and users. Resource allocation in our scenario is comprised of relay selection, subcarrier pairing, subcarrier assignment, and transmit power allocation. Particularly, in the context of EE with quality of service constraints, three different problems, namely, power consumption minimization, global EE maximization, and minimum individual EE maximization are addressed. For tackling them, first, we demonstrate a property that exploits the use of the decode and forward protocol employed in the relays and we show how it can be applied to simplify the investigated problems. Although some of these problems are nonconvex due to the fractional objective functions and integer optimization domain, optimal solutions are provided using generalized fractional programming theory to transform the fractional objective functions to the subtractive forms. Then, by employing Dinkelbach or bisection methods, we propose iterative algorithms where a parametric problem is solved in each iteration until reaching convergence. By introducing a penalty function to handle integer variables and applying majorization-minimization approach, we make the parametric problem convex and we propose suboptimal iterative solutions with reduced computational cost. Regarding obtained simulation results, we discuss the performance of the involved solutions in terms of global EE and fairness with respect to different parameters of the system.

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Section: R(y)mentioning

confidence: 99%

Section: R(y)mentioning

confidence: 99%

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Energy‐efficient radio resource allocation for dual‐hop relay‐assisted orthogonal frequency division multiple access systems with quality of service provisioning

Saraiva

Lima

Pessoa

et al. 2021

Trans Emerging Tel Tech

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show abstract

“…Also in telecommunications and mobile networks, cyber-attacks can directly inject false data in the network, spread malware, send spam, or collect information for illegal purposes [169]. Self-organised networks [170,171] and virtual network functions [172,173] aid to get an early detection and better mitigation of cyber-attacks in mobile networks [174,175].…”

Section: Agent-based Complex Networkmentioning

confidence: 99%

Multi-Agent Systems and Complex Networks: Review and Applications in Systems Engineering

et al. 2020

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Systems engineering is an ubiquitous discipline of Engineering overlapping industrial, chemical, mechanical, manufacturing, control, software, electrical, and civil engineering. It provides tools for dealing with the complexity and dynamics related to the optimisation of physical, natural, and virtual systems management. This paper presents a review of how multi-agent systems and complex networks theory are brought together to address systems engineering and management problems. The review also encompasses current and future research directions both for theoretical fundamentals and applications in the industry. This is made by considering trends such as mesoscale, multiscale, and multilayer networks along with the state-of-art analysis on network dynamics and intelligent networks. Critical and smart infrastructure, manufacturing processes, and supply chain networks are instances of research topics for which this literature review is highly relevant.Processes 2020, 8, 312 2 of 29 in a telecommunication system network, nodes (e.g., routers and switches) may suffer over time a degradation in their properties that may lead them to diminish their performance. However, just the daily variation on traffic demand also has an impact on such nodes performance. Unexpected, external intervention such as cyber-attacks or extreme weather conditions may affect the properties, even the topology of a telecommunication system.Intelligent distributed systems are capable of modelling how different parts of the network might work individually and collectively [10]. Ultimately, this is used as support for any decision-making system aiming to achieve better overall system functioning and its consequent performance. Intelligent distributed systems encompass autonomous learning units that can be associated with the nodes of a complex network. These intelligent network nodes are able to act independently and also interact with other nodes to pursue both individual (local) and general system-level targets. The necessary communication between individuals can be represented by links of the complex network connecting their nodes. It is natural to understand such nodes as intelligent agents within a MAS framework. Each agent separately obeying simple rules but working together with other agents makes it possible to approach complex engineering challenges. Intelligent distributed systems have been proposed in a broad range of engineered complex systems [11,12]. Precisely, the review proposed herein focuses only on engineered systems and manufacturing processes, given the wide spectrum of the approached topic. Out of this review fall, then, topics related to social systems analysis such as migration models [13,14] or online social media [15,16]. Similarly, natural systems are out of this review scope. This is the case of computational chemistry [17,18], biology [19,20], and metabolic networks [21,22].Automatic optimisation and control in an engineering system is associated with a near real-time data acquisition and an optimal decision-making. Th...

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“…Peer-reviewed version available at Processes 2020, 8, 312; doi:10.3390/pr8030312 [160]. Self-organised networks [161,162] and virtual network functions [163,164] aid to get an early detection and better mitigation of cyber-attacks in mobile networks [165,166].…”

Section: Agent-based Complex Networkmentioning

confidence: 99%

A Review on Control and Optimisation of Multi-Agent Systems and Complex Networks for Systems Engineering

Herrera¹,

Hernández²,

Parlikad³

et al. 2020

Preprint

View full text Add to dashboard Cite

Systems Engineering is an ubiquitous discipline of Engineering overlapping industrial, chemical, mechanical, manufacturing, control, software, electrical, and civil engineering. It provides tools for dealing with the complexity and dynamics related to the optimisation of physical, natural, and virtual systems management. This paper presents a review of how multi-agent systems and complex networks theory are brought together to address Systems Engineering and management problems. The review also encompasses current and future research directions both for theoretical fundamentals and applications in Industry. This is made by considering trends such as mesoscale, multiscale, and multilayer networks; along with the state-of-art analysis on network dynamics and intelligent networks. Critical and smart infrastructure, manufacturing processes, and supply chain networks are instances of research topics for which this literature review is highly relevant.

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Optimization of Coverage in 5G Self-Organizing Small Cell Networks

Cited by 8 publications

References 25 publications

Energy‐efficient radio resource allocation for dual‐hop relay‐assisted orthogonal frequency division multiple access systems with quality of service provisioning

Energy‐efficient radio resource allocation for dual‐hop relay‐assisted orthogonal frequency division multiple access systems with quality of service provisioning

Multi-Agent Systems and Complex Networks: Review and Applications in Systems Engineering

A Review on Control and Optimisation of Multi-Agent Systems and Complex Networks for Systems Engineering

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