无线链路带宽的快速波动推动了无线 /移动网络中对适应的多媒体服务的研究 以无线网络系统的利润最大化为目标 ,研究适应的多媒体应用的带宽适应方案 达到利润最大化的最优带宽适应算法是一个NP hard问题 提出一个基于遗传算法的带宽适应方案 ,在算法复杂度大大低于最优算法的同时 ,获得的利润值近似最优 性能分析和实验结果证明了这一结论 The rapid fluctuation of wireless link bandwidth promotes the research of adaptive multimedia services in wireless / mobile networks. With the goal of maximizing the profit of wireless network system, the bandwidth adaptation scheme of adaptive multimedia applications is studied to achieve the optimal profit maximized bandwidth adaptation The algorithm is a NP hard problem proposed a bandwidth adaptive scheme based on genetic algorithm, the algorithm complexity is much lower than the optimal algorithm at the same time, the approximate optimal profit obtained by the performance analysis and experimental results to prove this conclusion