Load balancing for cellular/WLAN integrated networks
Load balancing for cellular/WLAN integrated networks
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DOI：
10.1109/mnet.2007.314535
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发表时间：
2007
期刊：
影响因子：
9.3
通讯作者：
Wei Song;W. Zhuang;Y. Cheng
中科院分区：
文献类型：
--
作者：
Wei Song;W. Zhuang;Y. Cheng
异构第三代蜂窝网络与无线局域网的互通是实现蜂窝网络与无线局域网优势互补的第四代无线网络演进的一种有效途径。面向4G的蜂窝/WLAN融合网络的资源管理是一个值得深入研究的重要课题。在这篇文章中，我们提出了一个松散耦合的蜂窝/WLAN集成网络中的资源管理的政策框架，负载平衡策略的目的是有效地利用池的网络资源。在负载均衡策略中采用两阶段控制策略，在接纳阶段使用呼叫分配提供统计服务质量保证，在业务服务阶段使用动态垂直切换来最小化性能变化。数值结果表明，所提出的负载平衡解决方案实现了显着的性能改善，比其他两个参考方案
The interworking between heterogeneous third-generation cellular networks and wireless local area networks is one promising evolution approach to fourth-generation wireless networks, which can exploit the complementary advantages of the cellular network and WLANs. Resource management for the 4G-oriented cellular/WLAN integrated network is an important open issue that deserves more research efforts. In this article we present a policy framework for resource management in a loosely coupled cellular/WLAN integrated network, where load balancing policies are designed to efficiently utilize the pooled resources of the network. A two-phase control strategy is adopted in the load balancing policies, in which call assignment is used to provide a statistical quality of service guarantee during the admission phase, and dynamic vertical handoff during the traffic service phase is used to minimize the performance variations. Numerical results are presented to demonstrate that the proposed load balancing solution achieves significant performance improvement over two other reference schemes