Decentralized access point selection architecture for wireless LANs /sub e/ployability and robustness
Decentralized access point selection architecture for wireless LANs /sub e/ployability and robustness
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DOI：
10.1109/vetecf.2004.1400192
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发表时间：
2004-09
期刊：
影响因子：
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通讯作者：
Y. Fukuda;Y. Oie
中科院分区：
文献类型：
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作者：
Y. Fukuda;Y. Oie
随着无线局域网的普及，站点（STA）将更有可能使用多个接入点（AP），站点可以通过某种规则从一个AP漫游到另一个AP。因此，在这些情况下可能会出现以下重大问题：如何在可用AP中选择合适的AP。在现有的架构中，通常根据接收信号的强度来选择AP。然而，这种AP选择策略导致STA集中于特定AP，STA无法有效利用无线局域网的资源。因此，我们提出了分散式 AP 选择策略，并表明所提出的策略可以实现无线接入资源的高效和公平共享。然后，我们从实践的角度检查去中心化架构的可部署性和稳健性。所提出的架构应该在不损害当前广泛部署的常见现有架构的性能的情况下进行部署。因此，我们的架构的可部署性是在这方面进行检验的。此外，除了静态特性之外，还研究了所提出的架构的动态行为，以检查其对由于 AP 故障和 STA 突发到达而导致的情况动态变化的鲁棒性。我们的仿真结果表明，所提出的架构在可部署性和鲁棒性方面都具有出色的特性。
According to the spread of wireless LAN, multiple access points (AP) will be much more likely to be available there for stations (STA), which can roam from one AP to another by some rule. Consequently, the following significant issue can arise in those cases: how to select an appropriate AP among available AP. In the existing architecture, the received signal strength is usually used to select an AP. However, such an AP selection strategy causes the concentration of STA to specific AP and STA cannot use the resources of wireless LAN effectively. Hence, we propose decentralized AP selection strategies, and show that the proposed strategies can achieve an efficient and fair share of wireless access resources. Then, we examine deployability and robustness of our decentralized architecture from a practical viewpoint. The proposed architecture should be deployed without hurting the performance of the common existing architecture currently widely deployed. Therefore, the deployability of our architecture is examined in this respect. Furthermore, in addition to static characteristics, the dynamic behavior of the proposed architecture is studied to examine its robustness against some dynamic changes of situation due to AP breakdown and bursty arrivals of STA. Our simulation results show that the proposed architecture has excellent features in terms of both of deployability and robustness.