On improving SINR in LTE HetNets with D2D relays

Sathya, Vanlin; Ramamurthy, Arun; Kumar, Sanjeev; Tamma, Bheemarjuna Reddy

doi:10.1016/j.comcom.2015.12.004

Cited by 13 publications

(7 citation statements)

References 39 publications

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“…(a) Co-tier Interference: Due to reuse of one usage of spectrum, interference from the neighboring small cells is called co-tier interference [15,17,58]. For example, UE2 is getting served by the Femto BS (F2), but it is receiving interference from the neighboring Femto BSs (F1 & F3).…”

Section: Associated Challenges and Existing Solutions For Past And Pr...mentioning

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: Associated Challenges and Existing Solutions For Past And Pr...mentioning

confidence: 99%

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

Sathya¹

2021

Preprint

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“…Telecom industry and research community works on boosting the spectrum efficiency by deploying more small cells and D2D under a single Macro BS. To attain a good SINR authors in [1], [2] deployed small cells inside the buildings by considering Macro-Femto interference. Also, authors proposed an efficient placement and dynamic power control SON (Self organizing Network) algorithm which optimally plan the small cells deployment and dynamically adjusts the transmission power of small cell based on the occupancy of Macro users in the interference zone terrain.…”

Section: Related Workmentioning

confidence: 99%

Enhancing Spectral Utilization by Maximizing the Reuse in LTE Network

Kumar¹,

Sathya²,

Ramanath³

2019

Preprint

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Need for increased spectral efficiency is key to improve quality of experience for next generation wireless applications like online gaming, HD Video, etc.,. In our work, we consider a LTE Device-to-device (D2D) network where LTE UEs have primary access to the spectrum and D2D pairs have secondary access. To enhance spectral efficiency, BS can offload the traffic by activating multiple D2D pairs within the serving cell. This ensures that the same radio resource will be reused across the primary LTE UEs and different D2D pairs. In this context, we propose to enable more D2D secondary users in the serving cell, by utilizing neighboring BS spectrum to fairly coexist with neighboring LTE primary users. We model the system and show via extensive simulations, that the above configuration guarantees good throughput for the D2D pairs in the serving cell while ensuring that the primary LTE throughput demand is not compromised.

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“…Thus, we compare the obtained results with another approximation based on the hyperexponential distribution. In this case we use the truncated two phase hyperexponential distribution to approximate the interference from a single source (7). The total interference power is obtained by convolving the obtained approximate distribution four times.…”

Section: Uplink Scenariomentioning

confidence: 99%

“…The signal-to-interference ratio (SIR) is a universal metric specifying performance of wireless systems [7]. Once SIR is known one could describe the Shannon rate of the channel and spectral efficiency of the system.…”

Section: Introductionmentioning

confidence: 99%

SIR Analysis In Square-Shaped Indoor Premises

Samuylov¹,

Moltchanov²,

Gaidamaka³

et al. 2016

ECMS 2016 Proceedings Edited by Thorsten Claus, Frank Herrmann, Michael Manitz, Oliver Rose

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The increased wireless network densification has resulted in availability of wireless access points (AP) in almost each and every indoor location (room, office, etc.). To provide complete in-building coverage very often an AP is deployed per room. In this paper we analyze signal-to-interference (SIR) ratio for wireless systems operating in neighboring rooms separated by walls of different materials by explicitly taking into account the propagation and wall penetration losses. Both AP and direct device-to-device (D2D) configurations are addressed. Our numerical results indicate that the performance of such system is characterized by both the loss exponent describing the propagation environment of interest and wall materials. We provide the numerical results for typical wall widths/materials and analyze them in detail.

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On improving SINR in LTE HetNets with D2D relays

Cited by 13 publications

References 39 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

Enhancing Spectral Utilization by Maximizing the Reuse in LTE Network

SIR Analysis In Square-Shaped Indoor Premises

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