CAJ | 학술논문

提出了一种利用最优化理论的移动鲁棒性优化（MRO ）与移动负载均衡（MLB ）间冲突避免策略。该策略考虑用户在时间 T内接收信号强度的变化量，对不同用户动态调整切换范围，并对MLB问题进行数学建模，利用最优化理论设计目标优化函数，将切换参数O的取值范围作为约束条件，求得切换参数的最优值。仿真结果表明，该方法不仅能避免MRO与MLB间冲突的发生，而且能更有效地均衡小区负载，降低重载小区用户接入阻塞率、无线链路失败率，提高网络平均吞吐量。
제출료일충이용최우화이론적이동로봉성우화（MRO ）여이동부재균형（MLB ）간충돌피면책략。해책략고필용호재시간 T내접수신호강도적변화량，대불동용호동태조정절환범위，병대MLB문제진행수학건모，이용최우화이론설계목표우화함수，장절환삼수O적취치범위작위약속조건，구득절환삼수적최우치。방진결과표명，해방법불부능피면MRO여MLB간충돌적발생，이차능경유효지균형소구부재，강저중재소구용호접입조새솔、무선련로실패솔，제고망락평균탄토량。
Proposed in this paper is an optimization theory-based strategy of avoiding the conflict between MRO (Mobility Robustness Optimization)and MLB (Mobility Load Balancing).This strategy takes into consideration the variation of users'received signal reference power in the period of T,so that the handover range for different users can be dynamically adjusted.Moreover,based on the optimization theory,optimization objectives are designed for the modeled MLB problem,and the allowed range of handover parameter O is set as the constraint to obtain the optimal value of the handover parameter.Simulation results indicate that the proposed strategy not only avoids the conflict between MRO and MLB but also balances the cell load effectively,and that it helps to decrease the call blocking ratio and radio link failure as well as increase the network throughput.