CAJ | 학술논문

针对异构蜂窝系统的接纳控制问题，设计了一种动态联合呼叫接纳控制算法。该算法采取TOPSIS法选择最优接入网，根据系统负载分布情况动态调整网络资费，对用户的接入选择决策施加影响，以均衡网络间负载；针对不同的呼叫优先级，采取多级接入阈值及动态带宽分配策略，在接入控制环节进一步改善系统性能及用户体验。仿真结果表明，该算法在重视用户偏好的同时实现了负载均衡，降低了呼叫阻塞率和掉线率。
침대이구봉와계통적접납공제문제，설계료일충동태연합호규접납공제산법。해산법채취TOPSIS법선택최우접입망，근거계통부재분포정황동태조정망락자비，대용호적접입선택결책시가영향，이균형망락간부재；침대불동적호규우선급，채취다급접입역치급동태대관분배책략，재접입공제배절진일보개선계통성능급용호체험。방진결과표명，해산법재중시용호편호적동시실현료부재균형，강저료호규조새솔화도선솔。
A dynamic joint call admission control algorithm is designed aiming at the admission control problem in heterogeneous cellular systems. This algorithm adopts TOPSIS method to select the optimal access network and adjusts network cost dynamically according to the system’s load distribution, thus balances the load between networks by influencing the user’s access selection decision-making. Also, a multi-level access threshold and dynamic bandwidth allocation strategy is adopted for different call pri-orities to further improve system performance and user experience in the stage of access control. Simulation results show that the algorithm pays attention to the user preferences while achieving load balancing, reducing the call blocking probability and dropping rate.