Antenna configuration comparison in challenging NLOS locations

Erkkila, Juha; Koskela, Marjut; Heikkilä, Joni; Kupiainen, Tuomo; Heikkilä, Matti; Kippola, Tero; Nykanen, Asko; Saukkonen, Risto

doi:10.1109/eucnc.2017.7980710

Cited by 3 publications

(8 citation statements)

References 2 publications

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“…During the four-month measurement period, only considerable changes in the measurement circumstances were that the environment foliage decreases in autumn, which caused a slight throughput increase in the measurements [2]. This effect is expected as many studies have reported the decrease of the attenuation of trees without foliage e.g.…”

Section: Measurement Periodmentioning

confidence: 92%

“…With all these adjustments, network throughput can be improved [1]. This study expands the previous work on AAS field trial [2].…”

mentioning

confidence: 84%

“…The vertical AAS was the most promising in these tests. When the beam is steered towards the user, the horizontal beam forming is the most useful [2].…”

Section: Measurement Environment and Setupmentioning

confidence: 99%

“…The eNBs are connected to Evolved Packet Core (EPC) and to Operation and Maintenance (O&M). In the measurement configuration, two AAS and one passive antenna in 2.1 GHz LTE band at 5 MHz LTE system bandwidth were operated from Puuhkala eNB [2].…”

Section: A Field Trial Environmentmentioning

confidence: 99%

“…In the analysis phase, it was discovered that the measurement software recorded some sample values before and after the data transfer, which were not part of the actual data transfer. These false values were filtered from the results in the analysis phase [2].…”

Section: Description Of Measurement Casementioning

confidence: 99%

See 4 more Smart Citations

Development of the measurement method for challenging NLOS conditions in mobile networks

Heikkilä

Erkkila

Koskela

et al. 2017

2017 IEEE International Workshop on Measurement and Networking (M&N)

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Abstract-The aim of this paper is to introduce the measurement method for challenging Non-Line of Sight (NLOS) conditions in mobile networks. The need to develop the measurement method appeared LTE (Long Term Evolution) uplink (UL) performance with different antenna technologies when receiving NLOS signal in field tests. Many challenges appeared during the study. This paper introduces the challenges and presents solution.

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Section: Measurement Periodmentioning

confidence: 92%

“…With all these adjustments, network throughput can be improved [1]. This study expands the previous work on AAS field trial [2].…”

mentioning

confidence: 84%

“…The vertical AAS was the most promising in these tests. When the beam is steered towards the user, the horizontal beam forming is the most useful [2].…”

Section: Measurement Environment and Setupmentioning

confidence: 99%

Section: A Field Trial Environmentmentioning

confidence: 99%

Section: Description Of Measurement Casementioning

confidence: 99%

See 3 more Smart Citations

Development of the measurement method for challenging NLOS conditions in mobile networks

Heikkilä

Erkkila

Koskela

et al. 2017

2017 IEEE International Workshop on Measurement and Networking (M&N)

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Performance Evaluation of a Live Multi-Site LTE Network

et al. 2018

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Field Measurement for Antenna Configuration Comparison in Challenging NLOS Locations

Heikkilä

Erkkila

Tervonen

et al. 2018

IEEE Trans. Instrum. Meas.

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This article has two main objectives. First, it describes the practical challenges of field trials and proposes a developed test method. Secondly, the test method is used to compare uplink performance with different antenna technologies when user equipment does not have a line of sight to the evolved Node B. Both passive and active antenna configurations were used in the performance evaluation. Modern cellular networks have high demands for capacity, reliability, and availability. The verification of a network's configuration and technological features is essential to guarantee network performance, and the performance of a network must be verified by laboratory testing or field trials; such trials produce experimental knowledge of technology features and configurations. Technological and environmental factors must also be considered before performing mobile network field-testing. Our work showed that moving user equipment produces more reliable and repeatable results than measurements with stationary user equipment. Our antenna configuration comparison study revealed that in the uplink direction, active antenna system beam control could significantly increase the uplink capacity in non-line-of-sight conditions. Index Terms-2-and 4-way RX diversity, AAS, field trial, horizontal beamforming, non-line-of-sight environment, MIMO, uplink capacity improvement, vertical beamforming.

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Antenna configuration comparison in challenging NLOS locations

Cited by 3 publications

References 2 publications

Development of the measurement method for challenging NLOS conditions in mobile networks

Development of the measurement method for challenging NLOS conditions in mobile networks

Performance Evaluation of a Live Multi-Site LTE Network

Field Measurement for Antenna Configuration Comparison in Challenging NLOS Locations

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