scholarly journals Efficient Load Balancing Algorithm in Long Term Evolution (LTE) Heterogeneous Network Based on Dynamic Cell Range Expansion Bias

2021 ◽  
Vol 47 (3) ◽  
pp. 943-952
Author(s):  
Emmanuel Bakuza ◽  
Hashimu U. Iddi ◽  
Abdi T. Abdalla
Keyword(s):  
Load Balancing ◽  
Range Expansion ◽  
Heterogeneous Network ◽  
Cell Range Expansion ◽  
Fairness Index ◽  
Term Evolution ◽  
Cell Range ◽  
Dynamic Cell ◽  
Load Balancing Algorithm

The traditional scheme for load balancing in a homogeneous Long Term Evolution (LTE) Network where User Equipment (UEs) associate to a node with the strongest received signal strength is not practical for LTE Heterogeneous Network (LTE HetNet) due to power disparity between the nodes. Therefore, dynamic Cell Range Expansion (CRE) based load-balancing schemes were employed by several scholars to address the challenges in the LTE HetNet. However, the fairness index in achieving the desired average user throughput and UE offloading effect is relatively low. In this work, an efficient load-balancing algorithm for LTE HetNet based on dynamic Cell Range Expansion (CRE) was developed to improve the fairness of the network for the desired throughput and UE offloading effect. The simulation results achieve a throughput gain improvement of up to 11%, while the fairness index improves by 6% compared to the existing algorithm. Further, the UEs offloading effect shows a significant improvement of 3% relative to the existing algorithm. Keywords: Fairness Index; Cell Range Expansion; Load Balancing; LTE Heterogeneous Network; Throughput

A Dynamic Cell Range Expansion for LTE-Advanced Heterogeneous Networks

2013 ◽  
Vol 397-400 ◽  
pp. 1954-1957
Author(s):  
Meng Fan Dai ◽  
Qing Yang Song ◽  
Zhao Long Ning
Keyword(s):  
Range Expansion ◽  
Network Performance ◽  
Base Station ◽  
System Capacity ◽  
Cell Range Expansion ◽  
Cell Edge ◽  
Macro Cell ◽  
Cell Range ◽  
Dynamic Cell ◽  
Cell Base

Deploying Pico cell Base Station (PBS) throughout a Macro cell layout is a promising solution to enhance system capacity and users throughput. However, the strong received power from Macro cell Base Station (MBS) makes the Pico cell areas narrow and limits cell splitting gain. Range Expansion (RE) is desirable to balance the network load between MBS and PBS by expanding the coverage, which subsequently increases cell splitting gains. However, more interference may be introduced if the bias value of RE is not set properly. In this paper, we propose a Dynamic Cell Range Expansion (DCRE) strategy that the bias value of RE is set dynamically according to the change of network environment. The proposed scheme aims to fulfill the resources utilization by RE scheme, and meanwhile improve the users performance of cell edge through cell load balancing method. Simulation results show that DCRE scheme can improve the network performance of cell edge, and increase the cell capacity and users throughput compared with the existing methods.

On a Way to the Self-Optimizing LTE Networks

2014 ◽  
Vol 618 ◽  
pp. 538-542
Author(s):  
Albert Asmaryan ◽  
Irina Borovik
Keyword(s):  
Load Balancing ◽  
Mobile Communication ◽  
Bit Error Rate ◽  
Figure Of Merit ◽  
Signal To Noise Ratio ◽  
Ratio Distribution ◽  
Lte Networks ◽  
Term Evolution ◽  
Load Balancing Algorithm

Main achievements in load balancing algorithm in a long-term-evolution (LTE) mobile communication system are presented. As result a self-optimizing system, that could be implement in the real networks. Basic target functions, such as the signal-to-noise ratio distribution, bit error rate, energy efficiency are derived as a figure of merit. The framework is exemplified by basic investigations on load balancing technology.

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