LTE端到端通信质量的性能评估

L. Zhang, T. Okamawari, T. Fujii
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引用次数: 17

摘要

LTE(长期演进)在3GPP(第三代合作伙伴计划)中标准化,为各种基于IP的服务提供更高的数据吞吐量和更低的延迟,包括网页浏览、VoIP (IP语音)、视频流等。在本文中,我们通过室内和室外实验对LTE进行了性能评估。我们评估了TCP吞吐量和UDP传输延迟。对于TCP吞吐量评估,我们观察了TCP上行链路限制问题,其中上行链路在低信噪比区域的性能下降会影响下行链路的TCP吞吐量。我们还分析了UDP数据包的传输延迟。延迟分布受流量模式(即数据包大小和包间间隙)的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Performance Evaluation of End-to-End Communication Quality of LTE
LTE (Long Term Evolution) is standardized in 3GPP (3rd Generation Partnership Project) to provide higher data throughput as well as lower latency for various IP based services including web browsing, VoIP (Voice over IP), video streaming and so on. In this paper, we conduct the performance evaluation of LTE by indoor and outdoor experiments. We evaluated both TCP throughput and UDP transmission delay. For the TCP throughput evaluation, we observed the TCP- uplink-limit problem in which the uplink performance degradation in low SNR (Signal to Noise Ratio) region affects on the downlink TCP throughput. We also analyzed the transmission delay of UDP packets. The delay distribution is affected by the traffic pattern, i.e. packet size and inter packet gap.
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