A Novel PCI Optimization Method in LTE System Based on Intelligent Genetic Algorithm

Shen, Ao; Guo, Bao; Gao, Yan; Xie, Tao; Hu, Xiaochun; Zhang, Yang; Shen, Jinhu; Fang, Yuan; Wang, Guozhi; Liu, Yi

doi:10.1007/978-981-10-7521-6_42

Cited by 4 publications

(2 citation statements)

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“…The Long Term Evolution (LTE) system's PCI mod3 interference will cause deterioration of radio access, handover, and service quality, significantly reducing user feelings [7]. We propose a new framework that uses the advanced intelligent genetic algorithm to minimize PCI mod3 interference based on Driving test, handover, and Measurement Report data tools.…”

Section: Methodsmentioning

confidence: 99%

The Optimization of PCI Interference in the 4G LTE Network in Padang

Chandra

Zurnawita

Yusnita

et al. 2021

JOIV : Int. J. Inform. Visualization

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With the growth of the customers and the expansion of the 4G LTE network in the area of Padang City, a PCI (Physical cell identity) modulo interference spot has been detected. PCI modulo interference occurs when an area is covered by two or more cells, which have a strong signal, and these cells have the same PCI modulo value. Based on the measurement results by the driving test method, the network conditions were not optimal because the SINR percentage (Signal to Interference Noise Ratio) in the good category was still low, at 9.47%, and the download throughput in the good category was 18.94%. This indicated that the interference in the area was quite high. Thus, it was necessary to do optimization action. The optimization action was taken by rotating the PCI on the site by considering the modulo value of each site so that the PCI with the same modulo did not merely lead to one location. Besides, action was taken to change the azimuth direction of cells that were too dominant. Based on the optimization process that has been carried out and the driving test activities that have been carried out again, the performance in the existing conditions has increased. The SINR percentage in the good category increased by 10%, so it became 19.47%, and the download throughput in the good category increased by 44.74% and became 63.68%.

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Section: Methodsmentioning

confidence: 99%

The Optimization of PCI Interference in the 4G LTE Network in Padang

Chandra

Zurnawita

Yusnita

et al. 2021

JOIV : Int. J. Inform. Visualization

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“…A centralized automatic PCI configuration scheme for femtocell networks to avoid the PCI conflict and confusion [9]. Moreover, the researchers purposed an intelligent genetic algorithm in [10] to reduce the PCI mod three interference. Moreover, in order to optimize the PCI reuse distance and decrease the collision, confusion and multiplexing interference of Self Organizing Network (SON), researchers in [11] presented a combined MST-Graph coloring algorithm.…”

Section: Introductionmentioning

confidence: 99%

PCI Planning Based on Local Search in LTE Network

Gui¹,

Gao²,

Jiang³

2019

dtcse

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The evolution of communication networks has made network system increasingly enormous and complex in recent years. Inter-cell interference (ICI) in the denser network will degrade the throughput and affect the Signal-to-Interference-plus-Noise Ratio in the Long Term Evolution (LTE) network. Assigning the Physical Cell ID (PCI) to cells in a proper way is effective to reduce ICI in the downlink network. In this work, the aim is to consider PCI collision, confusion and Reference Signal Collision (CRS) between neighbor cells comprehensively. For the purpose, a local search algorithm is proposed and its time complexity is O(Km 3 n 3 ) in the worst case. Compared with the random plan, numerical results of simulation experiment demonstrate the effectiveness and advantage of local search.

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