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Physical constraint and load aware seamless handover for IPTV in wireless LANs

机译：无线局域网中IPTV的物理约束和负载感知无缝切换

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In wireless LANs (WLANs), handover is usually performed based on either signal power or congestion level. However, considering only the congestion level could be insufficient for handover since it may cause traffic loss. Therefore, besides the load of access points (APs), it is necessary to consider the physical conditions of different WLANs for performing a seamless handover. This article introduces a novel scheme for seamless handover of IPTV streams in WLAN carrying IPTV traffic, called Physical Constraint and Load Aware (PCLA) handover. The PCLA can compute the load of APs for congestion detection purposes. In PCLA, a mobile node chooses the best network considering signal strength, bit error rate in the relevant environment, and the congestion of APs for making a seamless handover. The simulation results show the appropriateness of PCLA in improving handover performance. (C) 2016 Elsevier Ltd. All rights reserved.
机译：在无线局域网（WLAN）中，通常根据信号功率或拥塞程度执行切换。但是，仅考虑拥塞级别可能不足以进行切换，因为这可能会导致流量丢失。因此，除了接入点（AP）的负载外，还需要考虑不同WLAN的物理条件以执行无缝切换。本文介绍了一种用于在承载IPTV流量的WLAN中对IPTV流进行无缝切换的新方案，称为物理约束和负载感知（PCLA）切换。 PCLA可以出于拥塞检测目的而计算AP的负载。在PCLA中，移动节点会根据信号强度，相关环境中的误码率以及AP的拥塞来选择最佳网络，以进行无缝切换。仿真结果表明了PCLA在改善切换性能方面的适当性。 （C）2016 Elsevier Ltd.保留所有权利。

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