Enhanced distributed resource allocation and interference management in LTE femtocell networks

Sathya, Vanlin; Gudivada, Harsha Vardhan; Narayanam, Hemanth; Krishna, Bala Murali; Tamma, Bheemarjuna Reddy

doi:10.1109/wimob.2013.6673412

Cited by 11 publications

(7 citation statements)

References 7 publications

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“…A heterogeneous network (HetNet) consists of a Macro cell augmented with various types of small cells to address the challenge of enhancing system capacity and coverage. Examples of small cells are micro cell, pico cell, relay, Remote Radio Head (RRH), Femto, Licensed Assisted Access (LAA), New Radio in Unlicensed (NR-U), and Femto cell [3,4] as shown in Fig. 1.…”

Section: Gmentioning

confidence: 99%

Evolution of Small Cell from 4G to 6G: Past, Present, and Future

Sathya¹

2021

Preprint

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To boost the cellular system's capacity, the operator's have started to reuse the same licensed spectrum by deploying 4G LTE small cells (i.e., Femto Cells) in the past. But in time, these small cell licensed spectrum is not sufficient to satisfy future applications like augmented reality (AR) and virtual reality (VR). Hence, cellular operators look for alternate unlicensed spectrum in Wi-Fi 5 GHz band, later 3GPP named as LTE Licensed Assisted Access (LAA). The recent and current roll-out of LAA deployments (in developed nations like the US) provides an opportunity to understand coexistence's profound ground truth. This paper discusses a high-level overview of my past, present, and future research works in the direction of small cell benefits. In the future, we shift the focus onto the latest unlicensed band: 6 GHz, where the latest Wi-Fi version, 802.11ax, will coexist with the latest cellular technology, 5G New Radio (NR) in unlicensed.

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Section: Gmentioning

confidence: 99%

Evolution of Small Cell from 4G to 6G: Past, Present, and Future

Sathya¹

2021

Preprint

Self Cite

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“…where , , and ∆f are the Femto-cell transmission power, transmitter gain, and the frequency shift, respectively. Aside from that, [16] proposed to divide the Femto-cell coverage area into two regions namely inner and outer, whereby initially the outer region width equals to zero until the Channel Quality Identifier (CQI) level degrades below the CQIT hreshold. Users send frequent CQI readings to the FBS, the FBS later assigns higher modulation scheme to users bearing CQI levels.…”

Section: A Power Management Schemesmentioning

confidence: 99%

Review on Femto-cell Networks Interference Management Techniques

Mohamed¹,

Alias²,

Roslee³

2018

IJET

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Future cellular communication will relentlessly and incessantly hinge upon heterogeneous network due to its' capabilities in maintaining lofty capacity figures. It also strengthens the voice quality, accelerate data transmission, and optimize the users' battery consumption. However, its performance is often debatable due to the interference that may accompany its service. This paper focuses on studying the interference that affixes Femto-cells as an entity of heterogeneous networks due to its appealing functionalities and performance qualities. Moreover, the paper categorizes the types of interference based on the network platform and its source, discusses different contributions related to the topic based on schemes' efficiencies and complexity levels, and presents the most decent and stable scheme from the authors' prospective of view.

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“…When an FUE detects interference [10], it broadcasts an alarm which is received by FBSs within range. Thus, each FBS obtains information about which and how many FUEs are affected by it at any time [11] [12]. Interfering FBSs are identified as FBS-EI sources if the number of alarms received reaches the threshold.…”

Section: System Modelmentioning

confidence: 99%

“…In this study, FBSs are assumed to provide resources over a shared spectrum and operate in an open subscriber group (OSG) mode [5]. Randomly deployed and turned on and off by users, FBSs are characterized by a high level of randomness.…”

Section: Introductionmentioning

confidence: 99%

Improving LTE Femtocell Base Station Network Performance by Distributed Power Control

Wang¹,

Kuo²,

Tseng³

et al. 2016

ujeee

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LTE femtocell base stations (FBSs) have expanded the coverage of wireless communication systems. The growing use of FBSs has brought a serious issue of inter-FBS interference (also referred to as co-tier interference) due to their easy and convenient installation. This study proposes a systematic approach to reduce FBS co-tier downlink interference. In this study, FBSs are densely deployed in an environment and femtocell user equipment (FUEs) detect interference from FBSs and send an alarm signal to each FBS which interferes with it. To minimize the negative effects of interference, power levels are reduced for FBSs identified as excessive interference sources, which are defined as FBSs that have received a number of alarm signals over a given threshold. The method proposed in this study has been validated through simulation and is found to effectively reduce co-tier downlink interference in shared-spectrum femtocell environments, thereby improving system performance.

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Enhanced distributed resource allocation and interference management in LTE femtocell networks

Cited by 11 publications

References 7 publications

Evolution of Small Cell from 4G to 6G: Past, Present, and Future

Evolution of Small Cell from 4G to 6G: Past, Present, and Future

Review on Femto-cell Networks Interference Management Techniques

Improving LTE Femtocell Base Station Network Performance by Distributed Power Control

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