基于非合作博弈的异构融合网络非单调性选择策略研究

Non-cooperative game for non-monotone network access selection in heterogeneous integrated networks

异构网络融合是下一代网络发展的必然趋势,网络技术接入形式的多样化使得含有多网络接入端口的用户终端可以自主地选择最合适的接入网络获取服务。给出了一种异构网络中的接入网络选择的策略,首先说明了用户对服务质量需求的非单调性,同时根据博弈论的方法建立用户和网络之间的非合作博弈模型,通过模型求解,确定了均衡网络和用户双方利益的优化策略。该接入网络选择策略可以帮助用户选择最合适的接入网络,为异构网络融合系统的QoS标准制定提供依据。仿真结果表明,该选择策略可以满足不同场景下用户不同等级的服务需求,并且可以均衡用户和网络双方的利益,最终达到共赢的目的。

The integration of different heterogeneous access network was one of the remarkable characteristics of the next generation network,in which users with multi-network interface terminals could independently select access network to obtain the most desired service. This paper proposed a kind of unified quantification model of non-monotone quality of service（ QoS） and a model of non-cooperative game between users and networks for heterogeneous network access selection. An optimal network pricing mechanism could be formulated by using a novel strategy which was used in this non-cooperative game model to balance the interests of both the users and the networks. On the one hand,the access network selection strategy could help users select the most suitable access networks,and provide valuable basis for formulating QoS standards of heterogeneous network convergence system. The simulation results show that the network selection decision-making algorithm can meet the users＇ demand for different levels service in different scenes and it also can balance the interests of both the user and the network.