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中文摘要：
求解两个或多个限制参数的QoS多播路由问题，已被证明为NP—complete问题，而随着Ad hoc网络中多媒体和实时应用需求的不断提升，有效的QoS多播路由算法成为重要研究内容．针对Adhoc网络的动态性和QoS参数的多样性，给出一种解决该问题的捕食逃逸PSO方法，算法通过对MAODV路由发现过程发现的QoS有效路径进行编码和寻优处理，借助于捕食逃选行为使算法能够以较大概率获取全局最优QoS多播路由．在NS2平台上的仿真结果表明了捕食逃逸PSO解决Ad hoc网络QoS多播路由问题的可胜任性．
英文摘要：
To solve QoS-based Multicast routing problem with multiple contraints has been proved as NP complete problem. With the increasing of multimedia and real-time applications＇ requirement in Ad hoc networks, effective QoS-based Multicast routing algoritms become important research issues. Because of Ad hoe networks＇s dynamics and QoS parameters＇s diversity, this paper proposes a QoS multicast routing algorithm based on predatory escaping PSO, which encodes the effective QoS multicast paths found out by MAODV＇s routes-finding procedure and then optimizes QoS multicast tree. Experimental results on NS2 show that the proposed algorithm is competitive on QoS-based Multicast routing problem in Ad hoc networks.
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