利用基于sdn的分配系统增强企业无线局域网BSS的快速转换

2017 13th International Conference on Network and Service Management (CNSM) Pub Date : 2017-11-01 DOI:10.23919/CNSM.2017.8256028

Hyundong Hwang, Young-Tak Kim

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引用次数: 3

摘要

通过无线局域网提供qos感知的实时移动多媒体业务面临的挑战之一是qos感知的快速BSS(基本服务集)转换。由于大多数WiFi接入点(AP)不提供快速BSS转换(FT)，因此将当前连接的AP切换到另一个AP需要几秒钟，在此期间移动服务会中断。在本文中，我们提出了一种增强的快速BSS转换方案，用于移动宽带多媒体业务的无缝提供和负载均衡。该方案基于基于sdn的分发系统的WLAN ESS认知管理，允许在选择候选目标AP之前检查资源可用性;基于分配系统(DS)的资源请求的qos感知漫游/切换;以及基于sdn的分发系统的主动转发表更新。该方案已在真实的IEEE 802.11n测试平台环境中进行了实施和评估，性能测量结果表明，与现有方法相比，该方案在最大限度地减少业务中断时间和丢包的情况下提高了服务质量

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Enhanced fast BSS transition on enterprise WLAN with SDN-based distribution system

One of the challenges in QoS-aware realtime mobile multimedia service provisioning through WLANs is QoS-aware fast BSS (Basic Service Set) transition. Since most WiFi access points (APs) do not provide fast BSS transition (FT), changing currently connected AP to another takes several seconds during which mobile services are disrupted. In this paper, we propose an enhanced fast BSS transition scheme for seamless mobile broadband multimedia service provisioning and load balancing. The proposed scheme is based on i) cognitive management of WLAN ESS with SDN-based distribution system that allows checking for resource availability before selecting a candidate target AP, ii) QoS-aware roaming/handover with resource request over distribution system(DS), and iii) proactive forwarding table updates of SDN-based distribution system. The proposed scheme had been implemented and evaluated in a real IEEE 802.11n testbed environment, and the performance measurements showed enhanced QoS provisioning with minimized service disruption time and packet loss compared with existing approaches.1

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2017 13th International Conference on Network and Service Management (CNSM)

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