异构无线网络多网资源优化管理研究

针对异构无线网络多网协同的特点,从分析多个无线网络共存的资源管理优化体制构建思想出发,建立了新的异构无线网络资源统一管理优化模型,实现了协同信息的控制和管理,同时保证了异构数据呼叫业务的服务质量,解决了多网间资源管理优化问题。首先,该模型在对呼叫服务请求做优化决策时,不仅考虑了本网络服务域的可用资源、服务请求的速率以及本系统的长期收益,同时也考虑了其他网络服务域的整体长期收益；其次,通过对所提出的基于异构无线网络多网资源优化管理模型的性能进行理论分析,得到其重要服务质量参数——新呼叫阻塞率；最后,通过仿真比较可以看出,通过该模型获得的优化决策策略能充分利用异构无线网络中各个网络域的资源,不仅提高了资源的利用率,而且在提高网络整体长期收益的同时,也保证了移动服务的服务质量。与资源完全共享算法相比,本方法降低了新呼叫阻塞率。理论分析和实验证明了异构无线网络资源域间资源优化管理方法的有效性、适应性。

Multi-domain Optimal Resource Management in Heterogeneous Wireless Networks

Based on the characteristic of multiple network cooperation,we studied multi-domain optimal resource ma-nagement in heteroge-neous wireless networks.We analyzed the situation of optimal resource management in heterogeneous wireless networks and proposed an optimal model to allocate the whole network resource.The model can improve both the entire rewards of the system and the quality of service (QoS) by allocating the heterogeneous wireless network resources between network domains.We proposed a new Semi-Markov Decision Process (SMDP) based model for the optimal management of resource to achieve the optimal decision-making strategies between multiple network domains in heterogeneous wireless network.Theoretical analysis and experiment results indicate that the optimal strategies can not only increase the overall long-term rewards of the system,but also reduce the call blocking probability of service in order to increase the quality of service (QoS) of heterogeneous wireless networks,compared with the complete sharing algorithm,our method can reduce the new call blocking probabilities.