CAJ | 학술논문

在未来的异构无线网络环境中，为满足数据业务的需求，移动用户总希望能够接入最适合的网络。针对将实际测量的指标值归一化后作为决策值中存在的问题，提出了将效用理论应用到多指标算法中，设计了指标在不同业务、终端状态、用户类型下的效用函数，并用指标效用替代归一化测量值作为决策值计算备选网络的总效用，最后根据总效用值的比较来选择最优网络。仿真表明，此算法能够更好地反映用户的需求，帮助用户选择适合的网络。
재미래적이구무선망락배경중，위만족수거업무적수구，이동용호총희망능구접입최괄합적망락。침대장실제측량적지표치귀일화후작위결책치중존재적문제，제출료장효용이론응용도다지표산법중，설계료지표재불동업무、종단상태、용호류형하적효용함수，병용지표효용체대귀일화측량치작위결책치계산비선망락적총효용，최후근거총효용치적비교래선택최우망락。방진표명，차산법능구경호지반영용호적수구，방조용호선택괄합적망락。
In future heterogeneous wireless network environment,mobile users always want to be able to access the most appropriate network to satisfy the demand of data service.To work out the problem that exists when normalized index value serves as decision value, the utility theory is applied to multi?attribute algorithm,and the utility function of index under different services,terminal states and user types is given,and the normalized index value is replaced by utility value to calculate total utility of alternative network, finally the optimal network is selected by the comparison of total utility value. Simulation shows that this algorithm can better reflect the needs of users,and help choose network suitable for the user.