关键词: 网络选择, 带宽分配, 异构接入网络, 动态规划, 多链路

Abstract: Aiming at solving the problem of selecting appropriate network for mobile users in wireless heterogeneous access network, an optimal model of network selection was proposed based on each access network's available bandwidth and delay parameter. Network selection was formulated as dynamic programming problem in multi-homing environment, and an algorithm of selecting access network based on dynamic programming was presented. Simulation results show that the proposed algorithm provides optimal utilization of network resource and meets users' requirements.

Key words: network selection, bandwidth allocation, heterogeneous access network, dynamic programming, multi-homing