摘要
各种异构接入网络的无缝融合是下一代网络的显著特征之一,不同网络技术接入形式的多样化使得多网络接口的用户终端可自主选择对用户最为有利的接入网络(或SP,Service Provider)获得互联网服务.文中给出一种面向用户可视化可操作的异种网络接入选择实现机制,该机制采用一种量化接入系统服务质量的统一评价模型及基于最优用户性价比的网络选择决策方法,同时依据不同接入网络之间的合作与非合作关系以及SP与用户之间的竞争关系,引入博弈论方法建立网络价格策略的两种博弈模型,通过求解模型的纳什均衡价格及共谋价格,确定网络优化定价机制.仿真结果比较了异构网络融合环境下的各接入网络在非合作和合作博弈模式中的优化定价机制及获得的收益特性,并比较了不同博弈场景下用户选择接入网络的性价比.
The integration of different heterogeneous access network is one ot the remarkable characteristics of the next generation network, in which users with multi-network interface terminals can independently select access network （SP, Service Providers） to obtain the most desired Internet service. In this paper, a user-oriented visualized operational scheme at user terminal is proposed for heterogeneous network access selection. In the novel scheme, a unified quantification model for evaluating access service of heterogeneous systems and a network selection decision-making algorithm for maximizing user performance-cost-ratio are both applied and the optimal network pricing mechanism based on different game models among access networks is described for practical application scenarios. The profit characteristics of access networks for both noncooperative and cooperative game frameworks are compared and the user performance-cost-ratios in different game scenarios are evaluated via extensive numerical simulations.
出处
《计算机学报》
EI
CSCD
北大核心
2010年第9期1643-1652,共10页
Chinese Journal of Computers
基金
国际科技合作计划项目基金(2008DFA12110)
国家重大科技专项基金(2008ZX03003-005)
重庆市自然科学基金(CSTC2009BB2083)资助~~
关键词
异构网络接入选择
非合作博弈
合作博弈
纳什均衡
性价比
Keywords heterogeneous network access selection~ noncooperative game~ cooperative game^Nash equilibrium~ performance-cost-ratio
