摘要： 移动终端的多样性和无线通信网络带宽不足、性能不稳定的特性，会造成移动终端无法快速和正确地访问互联网图像信息。针对此问题该文开展了WAP图像自适应传递技术的研究。该技术根据图像质量、移动终端和网络性能，构造图像自适应传递的最优目标函数，用改进的遗传算法求解出图像的调整参数，在保证信息服务质量的前提下，实现对互联网图像的快速和正确访问。试验结果证明了该方案的可行性。

关键词: WAP网关, 遗传算法, 图像自适应传递, 信息服务质量

Abstract: The diversity of mobile devices with limited display capability, storage, processing ability and the changing bandwidth of the wireless network are main obstacles for mobile devices to access the images in Internet with WAP technology. This paper proposes a new method to design a WAP gateway, which can modify the images in Internet adaptively according to QoS estimation system. Image quality, mobile device capability and network bandwidth are used to establish an optimal target function. An improved genetic algorithm(GA) with a new coding scheme and developed new crossover operator and mutation operator is adopted to solve the optimal image modifying parameters. The simulation results show that the proposed method can quickly access the Internet images with the QoS.

Key words: WAP gateway, Genetic algorithm, Adaptive image delivery, Quality of service (QoS)

中图分类号: 

• TP393