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Feedback-based traffic splitting for wireless terminals with multi-radio devices

机译：具有多无线电设备的无线终端的基于反馈的流量拆分

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摘要

It is expected that a number of heterogeneous radio access technologies will be available simultaneously at a single wireless terminal in next generation wireless networks. This paper addresses the challenge of link aggregation in a wireless terminal with multi-radio devices. A major issue in multi-path transmission is how to reduce the additional reordering delay at the receiver, which is mainly caused by the difference between link delays. This is particularly critical in wireless environments due to dynamics in link quality. Motivated by this observation, we propose a feedback-based technique to determine split ratios adaptively, based on measurements at the receiver. The link-level packet delay is measured on a periodic basis. The measurement is conveyed to the sender, and is used for split ratio calculation. The proposed technique has been implemented into an actual test-bed network which includes WiMAX and WiFi systems, and its potential usefulness is extensively evaluated. It was experimentally verified that for given radio link conditions, the traffic split ratio between WiMAX and WiFi links is optimally converged
机译：期望在下一代无线网络中的单个无线终端上同时可以使用多种异构无线电接入技术。本文解决了具有多无线电设备的无线终端中链路聚合的挑战。多径传输中的主要问题是如何减少接收机处的额外重排序延迟，这主要是由链路延迟之间的差异引起的。由于链路质量的动态变化，这在无线环境中尤其重要。基于这种观察，我们提出了一种基于反馈的技术，可以基于接收器的测量值来自适应地确定分流比。链路级数据包延迟是定期测量的。测量结果将传送到发送方，并用于分流比计算。所提出的技术已被实施到包括WiMAX和WiFi系统的实际测试平台网络中，并且对其潜在的实用性进行了广泛的评估。经过实验验证，对于给定的无线电链路条件，WiMAX和WiFi链路之间的流量分配比可以最佳收敛

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