An Active Power Control Technique for Downlink Interference Management in a Two-Tier Macro–Femto Network

Hassan, Tehseen Ul; Gao, Fei

doi:10.3390/s19092015

Cited by 15 publications

(6 citation statements)

References 33 publications

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“…Macro-cell UE messages reporting interference can also be used by the femtocell to adapt the transmitted power based on that information [34], [202]. The latter solution is proposed in more recent studies of interference management in a two-tiers HetNets [203], where it is termed as Active Power Control. Basically, the femtocell adapts its transmitted power depending on macro-cell users feedback, through interference messages.…”

Section: B Impact Of Inter-cell Interference Coordination On Coveragementioning

confidence: 99%

A Survey on Coverage Enhancement in Cellular Networks: Challenges and Solutions for Future Deployments

Borralho

Mohamed

Quddus

et al. 2021

IEEE Commun. Surv. Tutorials

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Seamless and ubiquitous coverage are key factors for future cellular networks. Despite capacity and data rates being the main topics under discussion when envisioning the Fifth Generation (5G) and beyond of mobile communications, network coverage remains one of the major issues since coverage quality highly impacts the system performance and end-user experience. The increasing number of base stations and user terminals is anticipated to negatively impact the network coverage due to increasing interference. Furthermore, the "ubiquitous coverage" use cases, including rural and isolated areas, present a significant challenge for mobile communication technologies. This survey presents an overview of the concept of coverage, highlighting the ways it is studied, measured, and how it impacts the network performance. Additionally, an overlook of the most important key performance indicators influenced by coverage, which may affect the envisioned use cases with respect to throughput, latency, and massive connectivity, are discussed. Moreover, the main existing developments and deployments which are expected to augment the network coverage, in order to meet the requirements of the emerging systems, are presented as well as implementation challenges.

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Section: B Impact Of Inter-cell Interference Coordination On Coveragementioning

confidence: 99%

A Survey on Coverage Enhancement in Cellular Networks: Challenges and Solutions for Future Deployments

Borralho

Mohamed

Quddus

et al. 2021

IEEE Commun. Surv. Tutorials

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show abstract

“…Due to the concurrent operation of numerous small cells of and within these cells, multiple machine types or small gadgets or smartphones communicate with each other in a macro BS in the HetNet environment causes co-tier, crosstier interferences (as shown in Fig. 8) [88]. These interferences are mostly observed in a large gathering where many users require higher throughput, such as heavy data applications, internet surfing, downloading and uploading photos, videos, and so on.…”

Section: ) Interferences In Hetnetmentioning

confidence: 99%

Interference Management in 5G and Beyond Network: Requirements, Challenges and Future Directions

et al. 2021

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In the modern technological world, wireless communication has taken a massive leap from the conventional communication system to a new radio communication network. The novel concept of Fifth Generation (5G) cellular networks brings a combination of a diversified set of devices and machines with great improvement in a unique way compared to previous technologies. To broaden the user's experience, 5G technology provides the opportunity to meet the people's potential necessities for efficient communication. Specifically, researchers have designed a network of small cells with unfamiliar technologies that have never been introduced before. The new network design is an amalgamation of various schemes such as Heterogeneous Network (HetNet), Device-to-Device (D2D) communication, Internet of Things (IoT), Relay Node (RN), Beamforming, Massive Multiple Input Multiple Output (M-MIMO), millimeter-wave (mm-wave), and so on. Also, enhancement in predecessor's techniques is required so that new radio is compatible with a traditional network. However, the disparate technological models' design and concurrent practice have created an unacceptable intervention in each other's signals. These vulnerable interferences have significantly degraded the overall network performance. This review article scrutinizes the issues of interferences observed and studied in different structures and techniques of the 5G and beyond network. The study focuses on the various interference effect in HetNet, RN, D2D, and IoT. Furthermore, as an in-depth literature review, we discuss various types of interferences related to each method by studying the state-of-the-art relevant research in the literature. To provide new insight into interference issue management for the next-generation network, we address and explore various relevant topics in each section that help make the system more robust. Overall, this review article's goal is to guide all the stakeholders, including students, operators, engineers, and researchers, aiming to explore this promising research theme, comprehend interferences and their types, and related techniques to mitigate them. We also state methodologies proposed by the 3 rd Generation Partnership Project (3GPP) and present the promising and feasible research directions toward this challenging topic for the realization of 5G and beyond network.

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“…Previous authors have considered the problem of interference in femtocell networks. A lot of these papers used the power control method to mitigate interference (Hassan, & Gao, 2019). Some also considered the use of channel assignment schemes to mitigate interference within the network (Rahman, Alam, & Chowdhury, 2015), (Ahmed et al, 2014), (Chowdhury et al, 2012).…”

Section: *Corresponding Authormentioning

confidence: 99%

Minimizing Interference in Ultra-Dense Femtocell Networks Using Graph-Based Frequency Reuse Technique

Adekunle¹,

Gbenga-Ilori

2020

FUOYEJET

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This paper investigates the performance of graph colouring schemes for frequency assignment in Long-Term Evolution (LTE) networks with ultra-dense femtocells. The aim of the study is to minimize interference in such networks while ensuring efficient spectrum use for these femtocells. The three schemes investigated are the conventional greedy graph colouring algorithm, the saturation degree algorithm and our proposed graph-based theory (GBT) algorithm. The process of frequency assignment is similar in the last two except that the proposed GBT partitions the femtocells into independent sets for an efficient frequency re-use. The performance of these three schemes was analyzed through extensive simulations to determine the SINR and network capacity that can be obtained with the deployment of these schemes using the ITU-R P1238-7 path loss model. The outcome of this study showed that with the absence of a dynamic frequency assignment scheme, interference level is increased as the number of femtocell users within a particular coverage is increased, leading to a reduction in the capacity of such networks. Simulation results showed that all three algorithms considered have the ability to allocate frequencies to femtocells and minimize interference in a densely deployed environment, thereby increasing network capacity. The proposed GBT assigned the least sub-band thereby ensuring spectral efficiency while minimizing harmful interference. Results show that the greedy algorithm has a disadvantage of inefficiently assigning sub-bands randomly, while the saturation degree assigns more sub-bands when compared with the GBT scheme.Keywords — Femtocell, graph colouring, frequency assignment, LTE.

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An Active Power Control Technique for Downlink Interference Management in a Two-Tier Macro–Femto Network

Cited by 15 publications

References 33 publications

A Survey on Coverage Enhancement in Cellular Networks: Challenges and Solutions for Future Deployments

A Survey on Coverage Enhancement in Cellular Networks: Challenges and Solutions for Future Deployments

Interference Management in 5G and Beyond Network: Requirements, Challenges and Future Directions

Minimizing Interference in Ultra-Dense Femtocell Networks Using Graph-Based Frequency Reuse Technique

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