中文摘要：

一个改进咪咪叫 muhiplicative 代表 weighting 算法， SLE 咪咪叫在异构的无线网络为垂直 handoff 决定被建议。它加噪音比率效果， LS 最少的平方和信息熵方法把 SINR 信号介绍给干扰进算法。一个属性矩阵在目标网络，要求的带宽，交通费用和参与存取网络的可得到的带宽在来源网络和相等的 SINR 就 SINR 而言被构造。serv- 冰要求的 Handoff 决定会议多属性 QoSquality 根据交通特征被做。决定元素的主观重量关系与 LS 方法被决定。信息熵方法被采用导出评估标准的客观重量，并且导致全面重量。最后，基于属性矩阵和重量向量用咪咪叫算法被作决定。四 3GPP 第三个产生合伙工程定义交通的班在表演评估被考虑。模拟结果证明了建议算法能提供适合到交通的特征的令人满意的性能。

英文摘要：

An improved MEW （ muhiplicative exponent weighting） algorithm, SLE-MEW is proposed for vertical handoff decision in heterogeneous wireless networks. It introduces the SINR（ signal to interference plus noise ratio） effects, LS （least square） and information entropy method into the algorithm. An attribute matrix is constructed considering the SINR in the source network and the equivalent SINR in the target network, the required bandwidth, the traffic cost and the available bandwidth of participating access networks. Handoff decision meeting multi-attribute QoS（quality of serv- ice） requirement is made according to the traffic features. The subjective weight relation of decision elements is determined with LS method. The information entropy method is employed to derive the objective weights of the evaluation criteria, and lead to the comprehensive weight. Finally decision is made using MEW algorithm based on the attribute matrix and weight vector. Four 3GPP（ the 3rd generation partnership project） defined traffic classes are considered in performance evaluation. The simulation results have shown that the proposed algorithm can provide satisfactory performance fitting to the characteristics of the traffic.