scholarly journals A Fast Self-Planning Approach for Fractional Uplink Power Control Parameters in LTE Networks

2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
J. A. Fernández-Segovia ◽  
S. Luna-Ramírez ◽  
M. Toril ◽  
C. Úbeda
Keyword(s):  
Power Control ◽  
Mobile Networks ◽  
Network Performance ◽  
Fractional Power ◽  
Path Loss ◽  
Planning Problem ◽  
Regression Equations ◽  
Lte Networks ◽  
Uplink Power Control ◽  
Control Configuration

Uplink Power Control (ULPC) is a key feature of mobile networks. Particularly, in LTE, Physical Uplink Shared Channel (PUSCH) performance strongly depends on Uplink Power Control configuration. In this work, a methodology for the self-planning of uplink Fractional Power Control (FPC) settings is presented. Values for nominal power and channel path-loss compensation factor are proposed. The method is designed for the planning and operational (replanning) stages. A very fast solution for FPC setting can be achieved by the combination of several simple solutions obtained by assuming some simplifications. First, the FPC planning problem is formulated analytically on a cell basis through the combination of multiple regular scenarios built on a per-adjacency basis from a live scenario. Secondly, detailed inspection of the FPC parameter values aims to identify the most important variables in the scenario impacting optimal FPC settings. Finally, regression equations can be built based on those key variables for a simple FPC parameter calculation, so computational costs are extremely reduced. Results show that network performance with the proposed FPC parameter settings is good when compared with typical FPC configurations from operators.

scholarly journals Maximum Transmit Power for UE in an LTE Small Cell Uplink

Electronics ◽  
2019 ◽  
Vol 8 (7) ◽  
pp. 796 ◽  
Author(s):  
Amir Haider ◽  
Seung-Hoon Hwang
Keyword(s):  
Power Control ◽  
Network Performance ◽  
Fractional Power ◽  
Small Cell ◽  
Control Mode ◽  
Small Cells ◽  
Transmit Power ◽  
Lte Networks ◽  
Maximum Transmit Power ◽  
The Impact

To furnish the network with small cells, it is vital to consider parameters like cell size, interference in the network, and deployment strategies to maximize the network’s performance gains expected from small cells. With a small cell network, it is critical to analyze the impact of the uplink power control parameters on the network’s performance. In particular, the maximum transmit power (Pmax) for user equipment (UE) needs to be revisited for small cells, since it is a major contributor towards interference. In this work, the network performance was evaluated for different Pmax values for the small cell uplink. Various deployment scenarios for furnishing the existing macro layer in LTE networks with small cells were considered. The Pmax limit for a small cell uplink was evaluated for both homogenous small cell and heterogeneous networks (HetNet). The numerical results showed that it would be appropriate to adopt Pmax = 18 dBm in uniformly distributed small cells rather than Pmax = 23 dBm, as in macro environments. The choice of Pmax = 18 dBm was further validated for three HetNet deployment scenarios. A decrease of 0.52 dBm and an increase of 0.03 dBm and 3.29 dBm in the proposed Pmax = 18 dBm were observed for the three HetNet deployments, respectively. Furthermore, we propose that the fractional power control mode can be employed instead of the full compensation mode in small cell uplinks.

scholarly journals Heterogeneous networks: Fair power allocation in LTE-A uplink scenarios

PLoS ONE ◽  
2021 ◽  
Vol 16 (6) ◽  
pp. e0252421
Author(s):  
Reben Kurda
Keyword(s):  
Power Control ◽  
Heterogeneous Networks ◽  
Spectral Efficiency ◽  
Network Performance ◽  
Fractional Power ◽  
Base Station ◽  
Small Cells ◽  
Lte Networks ◽  
Control Approach ◽  
The Impact

Effective management of radio resources and service quality assurance are two of the essential aspects to furnish high-quality service in Long Term Evolution (LTE) networks. Despite the base station involving several ingenious scheduling schemes for resource allocation, the intended outcome might be influenced by the interference, especially in heterogeneous scenarios, where many kinds of small cells can be deployed under the coverage of macrocell area. To develop the network of small cells, it is essential to take into account such boundaries, in particular, mobility, interference and resources scheduling a strategy which assist getting a higher spectral efficiency in anticipate small cells. Another challenge with small cellular network deployment is further analyzing the impact of power control techniques in the uplink direction for the network performance. With that being said, this article investigates the problem of interference in LTE-advanced heterogeneous networks. The proposed scheme allows mitigation inter-cell interference through fractional self-powered control performed at each femtocell user. This study analyzes a scheme with optimum power value that provides a compromise between the served uplink signal within unwanted interference plus noise ratio to enhance spectral efficiency in terms of throughput. In particular, the maximum transmit power for user equipment in uplink direction should be reviewed for small cells as a major contributor to the interference. The simulation results showed that the proposed fractional power control approach can outperform the traditional power control employed as a full compensation mode in small cell uplinks.

scholarly journals The Effect of Overlapping Area on Ping-Pong Handover in LTE Networks

2015 ◽  
Vol 1 (4) ◽  
pp. 433
Author(s):  
Kinan Ghanem ◽  
Haysam Al-Radwan ◽  
Ahmad Ahmad
Keyword(s):  
Mobile Networks ◽  
Network Performance ◽  
Lte Networks ◽  
Network Load ◽  
Novel Approach ◽  
Ping Pong

Handover (HO) technique in LTE networks suffers from Ping-pong movement. Ping-pong HO can reduce the quality of the mobile user’s connection and increases the numbers of handovers which in turn raises the network load and generally degrades the network performance.   The work aims to present a novel approach to reduce the undesirable effects of ping-pong HO in LTE Mobile Networks using timer. The study focused on the ping-ping phenomenon taking into account maintained the dropped calls rates at lowest levels. The optimal timer values are determined based on the width of overlapping area, user velocity and type of eNodeB.  Analyzed results showed that the changes of overlapping area directly affect the timer values of the proposed algorithm. Optimal timer value should be selected precisely according to the width of the overlapping area, user velocity and timer value in order to reduce the ping-pong HO.

Uplink Power Control Performance in UTRAN LTE Networks

2009 ◽  
pp. 175-184 ◽  
Author(s):  
Robert Müllner ◽  
Carsten F. Ball ◽  
Kolio Ivanov ◽  
Johann Lienhart ◽  
Peter Hric
Keyword(s):  
Power Control ◽  
Control Performance ◽  
Lte Networks ◽  
Uplink Power Control

scholarly journals Data-Driven Construction of User Utility Functions from Radio Connection Traces in LTE

Electronics ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 829
Author(s):  
Antonio J. García ◽  
Carolina Gijón ◽  
Matías Toril ◽  
Salvador Luna-Ramírez
Keyword(s):  
User Experience ◽  
Mobile Networks ◽  
Network Performance ◽  
Packet Delay ◽  
Lte Networks ◽  
Management Processes ◽  
Adequate Quality ◽  
Qoe Model ◽  
The Impact

In recent years, the number of services in mobile networks has increased exponentially. This increase has forced operators to change their network management processes to ensure an adequate Quality of Experience (QoE). A key component in QoE management is the availability of a precise QoE model for every service that reflects the impact of network performance variations on the end-user experience. In this work, an automatic method is presented for deriving Quality-of-Service (QoS) thresholds in analytical QoE models of several services from radio connection traces collected in an Long Term Evolution (LTE) network. Such QoS thresholds reflect the minimum connection performance below which a user gives up its connection. The proposed method relies on the fact that user experience influences the traffic volume requested by users. Method assessment is performed with real connection traces taken from live LTE networks. Results confirm that packet delay or user throughput are critical factors for user experience in the analyzed services.

scholarly journals Exploring a New Adaptive Routing Based on the Dijkstra Algorithm in Optical Networks-on-Chip

Micromachines ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 54
Author(s):  
Yan-Li Zheng ◽  
Ting-Ting Song ◽  
Jun-Xiong Chai ◽  
Xiao-Ping Yang ◽  
Meng-Meng Yu ◽  
...  
Keyword(s):  
Power Consumption ◽  
Power Control ◽  
Optical Networks ◽  
Output Power ◽  
Network Performance ◽  
Transmission Loss ◽  
Adaptive Routing ◽  
Dijkstra Algorithm ◽  
Networks On Chip ◽  
On Chip

The photoelectric hybrid network has been proposed to achieve the ultrahigh bandwidth, lower delay, and less power consumption for chip multiprocessor (CMP) systems. However, a large number of optical elements used in optical networks-on-chip (ONoCs) generate high transmission loss which will influence network performance severely and increase power consumption. In this paper, the Dijkstra algorithm is adopted to realize adaptive routing with minimum transmission loss of link and reduce the output power of the link transmitter in mesh-based ONoCs. The numerical simulation results demonstrate that the transmission loss of a link in optimized power control based on the Dijkstra algorithm could be maximally reduced compared with traditional power control based on the dimensional routing algorithm. Additionally, it has a greater advantage in saving the average output power of optical transmitter compared to the adaptive power control in previous studies, while the network size expands. With the aid of simulation software OPNET, the network performance simulations in an optimized network revealed that the end-to-end (ETE) latency and throughput are not vastly reduced in regard to a traditional network. Hence, the optimized power control proposed in this paper can greatly reduce the power consumption of s network without having a big impact on network performance.

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