基于AHP方法的视频多播无线传输模型与机制研究

探索基于AHP方法的无线网络可扩展视频多播传输模型及方法，对由此引出的科学问题及关键技术开展深入系统的研究。首先突破现有机制建立的数学模型，根据递阶层次结构理论，建立基于AHP的多目标决策模型，对递阶层次结构定量描述，通过多层次排序理论优化目标，决策感知可利用的频谱资源，实现频谱资源共享。然后在此基础上，有效突破启发式算法在算法效率上的制约，以期研究一种新型的、近似程度可控且具有复杂度门限的低复杂度近似算法，并在混合资源分配的前提下研究基于动态规划且具有伪多项式时间复杂度的最优解，以快速最优的可扩展视频流传输，实现应用场景模型中最优视频服务质量。

The topic focuses on the research of video multicast transmission model and method of wireless network based on AHP,and carries out a thorough and systematic study on the scientific issues and the key technology of video multicast. First, according to hierarchical theory a multi-objective decision-making model based on Analytic Hierarchy Process(AHP) is estabilished to give hierarchical structure, and progress optimization based on multilevel selection theory to perceive and share the avaiable spectrum resource. Then on the basis, a new and low-complexity approximation algorithm which has the controllable approximation degree and complexity threshold is explored by breaking through the efficiency constraints of heuristic algorithms.Finally,under the premise of the hybrid resource allocation the optimal solution with pseudo-polynomial time complexity is studied based on dynamic programming to achieve the fast and effective scalable video stream transmission for the optimal quality of service of video multicast.