Uplink Power Control for LTE femtocell based on Overload Indicator

Yuliana, Hajiar; Kurniawan, Adit

doi:10.1109/isesd.2016.7886694

Cited by 3 publications

(2 citation statements)

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“…This kind of deployment yields new and more complex interference problems in both downlinks and uplinks [2]. To solve these problems, power control [16]- [19] and new scheduling algorithms [20], [21] have been the main solutions proposed to mitigate the underlying interference problems while improving the operation of HeNBs. Due to the uncoordinated deployment nature of HeNBs, algorithms for interferencepositioning are being developed as proposed by the authors of [22].…”

Section: Introductionmentioning

confidence: 99%

An Extensive Study on the Performance Evaluation and Scheduling of HeNBs

Paulo

Velez

2021

IEEE Access

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Since the dawn of mobile communication systems, reducing the cell size has been one option to increase the signal-to-interference-plus-noise ratio (SINR) in both links. The impact of this reduction can be perfectly understood by considering Shannon's law. This work studies in detail the performance of Home eNBs (HeNBs), nodes with a smaller coverage area. After a detailed theoretical study of the SINR, a simulation approach is used to extract performance results in small cell indoor scenarios. Results corresponding to the goodput, delay and packet loss ratio are analyzed. Based on an improved version of LTE-Sim, the proportional fair, frame level scheduler (FLS) and exponential rule are tested in an indoor environment. With the saturation conditions taken into consideration, the FLS performs better than the other schedulers. This work shows that with the considered applications, it is possible to achieve a reduction in the transmitter power of HeNBs without compromising the small cell network performance.

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Section: Introductionmentioning

confidence: 99%

An Extensive Study on the Performance Evaluation and Scheduling of HeNBs

Paulo

Velez

2021

IEEE Access

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“…To solve this problem, power control [3], [4], [5] and new scheduling algorithms [6], [7] have been the main approach to This work was supported by National Funding from the FCT -Fundação para a Ciência e a Tecnologia, through the UID/EEA/50008/2013, COST CA 15104 IRACON, ORCIP and CONQUEST (CMU/ECE/0030/2017). mitigate the underlying interference problems while improving the functioning of HeNBs.…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation and Packet Scheduling in HeNB Deployments

Paulo

Velez

Piro

2018

2018 IEEE 88th Vehicular Technology Conference (VTC-Fall)

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The unsupervised and chaotic deployment of Home eNBs (HeNBs) is leading to high levels of interference. To understand the behaviour of the interference of these uncoordinated deployments is vital to reach significant capacity improvement and also to explore opportunities to save energy. This paper considers high and middle interference level scenarios, with a maximum of four users per cell. HeNBs indoor deployed is considered within building. We theoretically analyse the traffic performance of this scenario through the study of the Signalto-Interference-plus-Noise-Ratio (SINR). Through the use of the LTE-Sim simulator one obtains the quality indicators for two flows that are being utilised by the users. Video and best effort are studied, while varying the transmitter power and the areas of the apartments. The achieved SINR is higher (around 10 dBm) when the area of the cells is smaller. The variation of the transmitter power of the HeNBs does not present any significant impact. Noticeable throughout the simulations is observed that is possible to operate the system without setting the transmitter power of HeNBs to the maximum value at both interference levels. Simulation results also show that with the considered flows is possible to serve the maximum number of four users per HeNB with high quality. This statement is confirmed by the maximum achieved Packet Loss Ratio for video with a value of value of 1.6 %, which is lower than the maximum of 2 % indicated by the 3GPP. Taking into account the obtained results it is possible to promote a reduction in energy consumption of the HeNBs without penalizing the service quality.

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