LTE-EMU: A High Fidelity LTE Cellar Network Testbed for Mobile Video Streaming

LTE-EMU: A High Fidelity LTE Cellar Network Testbed for Mobile Video Streaming
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LTE-EMU:用于移动视频流的高保真 LTE 蜂窝网络测试台

DOI:
10.1007/s11036-017-0868-z
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发表时间:
2017-05
影响因子:
3.8
通讯作者:
Zhang WZ
Zhang WZ
中科院分区:
计算机科学4区
文献类型:
--
作者:
Du Haipeng;Zheng Qinghua;Zhang Weizhan;Huang Yunhui;Zhang WZ

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随着商用LTE网络业务的不断增多,LTE协议本身也进入了成熟阶段。LTE网络中移动的视频流业务的评估和优化已经成为满足用户对服务质量要求的热点问题。不幸的是,据我们所知,目前没有可信的LTE蜂窝网络测试平台,其可以再现在真实的LTE网络上观察到的实际端到端传输特性。这种情况对不同研究小组声称的优化结果的有效性的证明和比较造成了限制。为了弥补这一差距,本文首先设计并实现了一个用于LTE蜂窝网络的端到端网络测试床LTE-EMU。该试验台是一个混合的解决方案,通过结合模拟和仿真的方法。然后,我们证明了LTE-EMU的保真度是显着高于LTE仿真环境,通过本文提出的保真度模型。通过现场测试的方法,在真实的LTE网络上采集实际的端到端传输特性,作为评价保真度的基础。最后,通过一个案例研究,我们展示了LTE-EMU在移动的视频流服务评估中的实用性。该测试平台也可用于其他无线协议和应用程序优化。
With the increasing number of commercially launched LTE network service, LTE protocol itself has entered a mature stage. Evaluations and optimizations of mobile video streaming services over LTE network have been a hot issue to meet the advancing customers’ requirements for quality of service. Unfortunately, to the best of our knowledge, no convinced testbed for LTE cellar network, which can reproduce the actual end-to-end transmission characteristics observed on real LTE network, is currently available. This situation poses limitations on the demonstration and comparison of the effectiveness of the optimization results claimed by different research groups. To bridge this gap, herein, we first design and implement an end-to-end network testbed for LTE cellar network called LTE-EMU. The testbed is a hybrid solution by combining methods of simulation and emulation. Then, we prove that the fidelity of LTE-EMU is significantly higher than an LTE simulation environment through the fidelity model presented in the paper. The bases of evaluating the fidelity are the actual end-to-end transmission characteristics collected on real LTE network through field test approach. Finally, using a case study, we show the usefulness of LTE-EMU in mobile video streaming service evaluation. The testbed is also publicly accessible for other wireless protocol and application optimization.
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