摘要
提出了一种在WLAN/LTE异构网络环境下接入网络选择的优化方案。方案不仅考虑了移动节点中的可用参数和它当前所关联的网络及备选网络,还对异构网络的整体性能进行了优化。介绍了一种基于著名的装箱问题近似解的优化模型和分布式处理信号的方案。最后用模拟器对方案进行了验证,结果表明,相比只根据本地可用信息来进行切换,上述解决方案对网络的性能有明显改善。
In this article, a new access network selection procedure is proposed and evaluated in such a combined WLAN/LTE environment. The pro- posed solution takes not only parameters available in the mobile node and its current and candidate access networks into account, but also performs an op- timization on the heterogeneous wireless network level as well. An optimization model based on an approximate solution to the well-known bin packing problem is presented. Also, there is a signaling scheme for distribution handling presented. Results from simulations performed in modeler show improve- ments compared to basing handover decisions on locally available information only.
出处
《电视技术》
北大核心
2013年第3期102-105,共4页
Video Engineering
基金
新一代宽带无线移动通信网国家科技重大专项(2010ZX03001-001-02)
