异构无线网络多链路接入动态资源分配算法

发布时间：2018-09-01 08:10

【摘要】：异构无线网络(Heterogeneous Wireless Networks,HWNs)环境下现有接入控制算法的主要问题是通过单一的传输链路建立移动用户和无线网络之间的连接,并且接入过程中的资源分配没有对全网的传输性能进行优化。为了解决上述问题,该文分析了HWNs中的资源分配模型和链路接入速率模型,提出一种支持多链路接入的动态资源分配算法MLA-DRA。算法以最大化系统传输速率为目标,将用户接入过程转化为前后相互联系的多阶段决策过程,利用前一阶段用户的资源分配状态计算下一阶段用户的最优解,从而推导出系统传输速率的最优值。在仿真平台上对MLA-DRA算法进行了性能分析,并且和其它算法进行了性能比较,实验结果表明,MLA-DRA算法能有效利用系统资源以及提高系统传输速率。
[Abstract]:The main problem of the existing access control algorithms in heterogeneous wireless network (Heterogeneous Wireless Networks,HWNs) environment is to establish the connection between the mobile user and the wireless network through a single transmission link. And the resource allocation in the access process does not optimize the transmission performance of the whole network. In order to solve the above problems, this paper analyzes the resource allocation model and link access rate model in HWNs, and proposes a dynamic resource allocation algorithm, MLA-DRA., which supports multi-link access. In order to maximize the transmission rate of the system, the algorithm transforms the user access process into a multi-stage decision process that is related to each other before and after, and calculates the optimal solution of the user in the next stage by using the resource allocation state of the user in the previous stage. Thus the optimal transmission rate of the system is derived. The performance of the MLA-DRA algorithm is analyzed on the simulation platform, and compared with other algorithms. The experimental results show that the MLA-DRA algorithm can effectively utilize the system resources and improve the transmission rate of the system.
【作者单位】：华南理工大学计算机科学与工程学院;广东石油化工学院理学院;东莞理工学院计算机学院;
【基金】：国家自然科学基金(61070179,61003066) 广东省自然科学基金(10151601501000015)~~
【分类号】：TN92

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