Enhancing Vehicular Link Performance Using Directional Antennas at the Terminal

2019 IEEE Globecom Workshops (GC Wkshps) Pub Date : 2019-12-01 DOI:10.1109/GCWkshps45667.2019.9024558

Michel Massanet Ginard, T. Izydorczyk, P. Mogensen, Gilberto Berardinelli

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引用次数: 3

Abstract

Cellular networks will be one of the main pillars in the development of future vehicular communications. However, downlink (DL) and uplink (UL) channels must be improved to cope with the required reliability and high throughput of the coming vehicular use cases. Vehicle side solutions which benefit from the high antenna gains could improve the performance of the UL channel whose coverage is limited by UL transmit power. In this paper we experimentally evaluate the performance of a directional antennas switching system based on live Long Term Evolution (LTE) measurements. A total of more than 150 km have been driven comprising different radio propagation scenarios. The results show considerable improvements of Reference Signal Received Power (RSRP) and Reference Signal Received Quality (RSRQ), together with a reduction of handovers specially in scenarios with high Line-Of-Sight probability. Additionally, it has been found that the UL throughput does not improve with the increase of antenna gain probably due to the UL Power Control mechanism used in LTE.

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利用终端定向天线增强车载链路性能

蜂窝网络将成为未来车载通信发展的主要支柱之一。然而，下行链路(DL)和上行链路(UL)信道必须得到改进，以应对即将到来的车辆用例所要求的可靠性和高吞吐量。受益于高天线增益的车载侧解决方案可以改善受UL发射功率限制的UL信道的性能。在本文中，我们实验评估了基于实时长期演进(LTE)测量的定向天线切换系统的性能。总共行驶了150多公里，包括不同的无线电传播方案。结果表明，参考信号接收功率(RSRP)和参考信号接收质量(RSRQ)有了相当大的提高，特别是在视距概率高的情况下，切换次数减少了。此外，研究发现，UL吞吐量并没有随着天线增益的增加而提高，这可能是由于LTE中使用的UL功率控制机制。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2019 IEEE Globecom Workshops (GC Wkshps)

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