Open Loop Power Control parameter settings impact on LTE HetNet uplink performance

Safjan, Krystian; Strzyż, Stanisław; Pedersen, Klaus I.; Steiner, Jens; Rosa, Claudio

doi:10.1109/iccw.2013.6649407

Cited by 16 publications

(9 citation statements)

References 9 publications

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“…They conclude that the closed-loop scheme outperforms open-loop based techniques, and that the transmission power obtained when using this latter approach was in fact not always appropriate. However, in most cases the focus is put on open-loop techniques [8], and there exist some works that aim at finding an optimal configuration of the corresponding parameters [9], [10], [11].…”

Section: Related Workmentioning

confidence: 99%

Uplink power control modeling for dense OFDMA-based heterogeneous networks

Díez

Agüero

2019

2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)

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In this paper we propose a novel model for the uplink in heterogeneous cellular networks. Opposed to previous works, we accurately account for the mutual interference caused by other users' connections, and we pose an optimization problem that can be straightforwardly solved to establish the minimum required transmission power that satisfies the minimum Signal-to-Interferenceplus-Noise Ratio (SINR) constraint. We assess the validity of the proposed approach by comparing the observed results with those obtained with a traditional closed-loop power control scheme. The main benefit of our solution is that it does not require any iteration to find the transmission power, while legacy approaches usually need a number of steps before finding it. Finally, we study the behavior of the uplink for different access selection strategies, and we compare the SINR and transmission power of open-loop and closed-loop power control solutions.

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Section: Related Workmentioning

confidence: 99%

Uplink power control modeling for dense OFDMA-based heterogeneous networks

Díez

Agüero

2019

2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)

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“…This means that a macro = 1 results in high interference, and a lower a macro value may be preferable. Using (16), the received SIR in the HetNet is presented in Fig. 12 when a macro = 0.8 and P o-macro = -100 dBm.…”

Section: Hetnet (Small Cell/macrocell) Scenariomentioning

confidence: 99%

“…For HetNet deployment, a UE‐specific TPC algorithm was proposed in , where the interference was computed by the ratio of the UE‐specific average interference to the average eNodeB interference. In , the impact of the OL/TPC parameters on the performance of LTE UL in a HetNet environment including the cell range extension for a picocell was analyzed. A brute‐force search was applied to determine the optimum PC parameters without investigating their tendency in both homogeneous and HetNet environments.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Open-Loop Transmit Power Control Parameters for Homogeneous and Heterogeneous Small-Cell Uplinks

Haider¹,

Sinha²,

Hwang³

2018

ETRI Journal

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In Long Term Evolution (LTE) cellular networks, the transmit power control (TPC) mechanism consists of two parts: the open loop (OL) and closed loop. Most cellular networks consider OL/TPC because of its simple implementation and low operation cost. The analysis of OL/TPC parameters is essential for efficient resource management from the cellular operator's viewpoint. In this work, the impact of the OL/TPC parameters is investigated for homogeneous small cells and heterogeneous small-cell/macrocell network environments. A mathematical model is derived to compute the transmit power at the user equipment, the received power at the eNodeB, the interference in the network, and the received signal-to-interference ratio. Using the analytical platform, the effects of the OL/TPC parameters on the system performance in LTE networks are investigated. Numerical results show that, in order to achieve the best performance, it is appropriate to choose a small = 1 and P o-small = -100 dBm in a homogenous small-cell network. Further, the selections of a small = 1 and P o-small = -100 dBm in the small cells and a macro = 0.8 and P o-macro = -100 dBm in the macrocells seem to be suitable for heterogeneous network deployment.

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“…In [9], a decentralized strategy for an FAP to self-regulate its transmission power level and usage of radio resources depending on its distance from the closest macrocell BS is devised. While in [10] and [11], the open loop power control optimization and the impact of open loop power control parameter settings for LTE uplink are analyzed in a co-channel HetNet scenario with macrocell and picocells presented. Moreover, there are works based on power control and game theory for interference management in HetNets, especially for two-tier femtocell networks, such as: [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Multi-leader multi-follower game based power control for downlink heterogeneous networks

Han

Yang

Chen

et al. 2014

Proceedings of the 33rd Chinese Control Conference

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Heterogeneous networks (HetNets) are expected to be an integral component of expansion of 3G and emerging 4G network deployments. However, in order to achieve the quality-of-service (QoS) requirements of all the users, interference mitigation techniques need to be developed to manage the radio resources of macrocells and small cells. In this paper, we focus on the optimal power allocation for downlink HetNets. Specifically, we take into account the different deployment targets and service requirements of macrocell base stations (BSs) and small cells (corresponding to picocells and femtocells), and classify them into two categories according to their deployers, namely, operator deployed BSs (OBSs) and customer deployed BSs (CBSs). Then, the framework of Stackelberg game with multiple leaders and multiple followers is adopted to investigate the downlink power allocation problem. To obtain the Stackelberg equilibrium (SE) distributively, we develop the power updating rules for both OBSs and CBSs. Moreover, the implementations of the proposed game are discussed. At last, numerical results show the convergence of the proposed game and the uniqueness of the SE.

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Open Loop Power Control parameter settings impact on LTE HetNet uplink performance

Cited by 16 publications

References 9 publications

Uplink power control modeling for dense OFDMA-based heterogeneous networks

Uplink power control modeling for dense OFDMA-based heterogeneous networks

Investigation of Open-Loop Transmit Power Control Parameters for Homogeneous and Heterogeneous Small-Cell Uplinks

Multi-leader multi-follower game based power control for downlink heterogeneous networks

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