Achieving High-Performance Cellular Data Services with Multi-Network Access
Achieving High-Performance Cellular Data Services with Multi-Network Access
复制标题
通过多网络接入实现高性能蜂窝数据服务
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
D. Raychaudhuri
中科院分区：
文献类型：
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作者：
P. Karimi;I. Seskar;D. Raychaudhuri
本文介绍了移动数据服务的设计和评估，该服务利用多个蜂窝网络上的并行多路径传输来实现显着的性能提升。多网络接入的动机是多无线电移动设备正在迅速成为现实，使最终用户可以通过网络多样性提高服务速度和可用性。与之前提出的应用或传输层技术相比，我们提出了一种用于多宿主（NAMH）蜂窝接入的新型网络辅助架构。在所提出的系统中，诸如路由器和基站之类的网络元件提供必要的多归属功能，包括分叉路由器的识别以及与蜂窝基站上当前可实现的比特率相对应的数据流的动态分割。使用 ns3 仿真和跟踪驱动仿真，对 LTE 基站的多网络服务进行了详细评估。结果表明，并行使用两个 LTE 网络以约 1.9 倍的比特率进行多网络接入可获得显着收益。与著名的 MPTCP 方法进行比较，显示在跟踪驱动的双网络场景中，NAMH 的增益约为 40%。
This paper presents the design and evaluation of a mobile data service which exploits parallel multi-path transmission over multiple cellular networks to achieve significant performance gains. Multi-network access is motivated by the fact that multi-radio mobile devices are fast becoming a reality, making it possible for end-users to increase their service speed and availability via network diversity. In contrast to previously proposed techniques at the application or transport layers, we propose a novel network assisted architecture for multi-homed (NAMH) cellular access. In the proposed system, network elements such as routers and base stations provide the necessary multihoming functionality including identification of a bifurcation router and dynamic splitting of the data stream corresponding to currently achievable bit-rates on the cellular base stations. A detailed evaluation is provided for the multi-network service with LTE base stations, using both ns3 simulation and trace-driven emulations. The results show that significant gains are achieved with multi-network access with bit-rates of ~1.9x using two LTE networks in parallel. Comparison with the well-known MPTCP method is given, showing gains of about 40% with NAMH for the trace-driven two-network scenario.