A fully distributed algorithm for pilot power control in LTE femtocell networks

“…20) and, consequently, more traffic is offloaded from the MBS (just when it is the most necessary). Applying (10) to the whole observation period, we have quantified the total amount of energy consumed by entire femtocell network during a working day: E FN;Static ¼ 2240:00 Wh and E FN;OurApproach ¼ 1871:84 Wh. It can be estimated that implementation of our algorithm in this case study results in an overall energy saving gain of 16.44%.…”

Section: Evaluation Of Energy Efficiencymentioning

confidence: 99%

“…It aims at addressing both energy consumption reduction and femto-femto interference issues without requiring a leader or a central control unit, neither information exchange between the base stations of the network. In the proposed algorithm (an improved version of the one presented in [9,10]) we make use of radio measurements integrating in each FBS automatic and autonomous procedures of configuration and optimization of coverage according to the detected on-site user activity. The adaptive nature of the coverage algorithm allows to increase the capacity and the Energy Efficiency (EE) of the overall network.…”

Section: Introduction and Related Workmentioning

confidence: 99%

Measurement-based coverage function for green femtocell networks

2015

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a b s t r a c tIn this paper, we propose a self-optimized coverage function for LTE femtocells embedded in a macrocell area. Each Femto Base Station (FBS) adapts its pilot power, and thus the coverage, to the on-site traffic demand. Under low traffic conditions the FBSs, whose presence is not essential for the proper operation of the network, reside in a low power Listen Mode. In this way a relevant energy saving on entire femtocell network can be achieved. In a high-load scenario, FBSs dynamically create high capacity zones under interference constraints. This permits to improve system capacity and offload more traffic from the nearby macrocell and, in the same time, to minimize co-channel interference in the femtocell tier.

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Distributed heuristic adaptive power control algorithms in femto cellular networks for improved performance

Kundu¹,

Majumder²,

Misra

et al. 2018

Trans Emerging Tel Tech

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Adaptiveness of femto base station's (FBS's) transmission power (TP) is crucial in determining Quality of Service and ecofriendliness of a network. Joint power optimization and admission control problems have been reformulated to identify the TP of v already deployed FBSs, and the problem is shown to be computationally hard. Accordingly, an adaptive distributed heuristic called power search algorithm (PSA) is proposed. A learning algorithm analytically identifies the received signal strength‐based coverage of each FBS in all directions during planning. A 3‐dimensional reference matrix, ie, REF, for each FBS, is thereby formulated and stored in the corresponding FBSs. Power search algorithm handles call admission/termination at run time. For call admission, PSA identifies the serving FBS and the required minimum TP. A suitable data structure is also maintained by PSA for efficient call handling. A new call is dropped if its admission degrades the Quality of Service of existing end‐users. For call termination, change in TP is triggered if the highest power level of the FBS was being exercised to serve this particular user. The worst‐case run‐time complexity of PSA turns out to be O(log2N), where N is the number of TP levels of a particular FBS. Comparing with existing heuristics, improved performance of PSA includes highest throughput and signal‐to‐interference‐plus‐noise ratio while minimizing starvation and cumulative TP with lower complexity even for high end‐user density. Exhaustive simulation reveals that the probability of an end‐user having signal‐to‐interference‐plus‐noise ratio above 0 dB is 0.83 even in the worst case scenario. Accordingly, the proposed PSA is claimed to be superior.

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A fully distributed algorithm for pilot power control in LTE femtocell networks

Cited by 4 publications

References 5 publications

Improved Interference-Free Channel Allocation in Coordinated Multiuser Multiantenna Open-Access Small Cells

Improved Interference-Free Channel Allocation in Coordinated Multiuser Multiantenna Open-Access Small Cells

Measurement-based coverage function for green femtocell networks

Distributed heuristic adaptive power control algorithms in femto cellular networks for improved performance

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