CAJ | 학술논문

在毫微微网络与传统蜂窝网络两层网络中，由于毫微微基站可以为附近的宏基站用户提供服务，且宏基站将一部分频谱分配给毫微微基站，毫微微基站与宏基站之间存在层间干扰，这限制了网络的性能。针对这一问题，研究了可提高网络性能的频谱复用算法。算法基于斯坦科尔伯格主从博弈理论，将宏基站建模为主博弈者，将毫微微基站建模为从博弈者；然后分别将宏基站与毫微微基站的利用率作为平均吞吐量与失真率函数，阐述了主从博弈者之间的交互无须任何代价；最后得出了对宏基站与毫微微基站都最优的频谱复用机制。仿真结果表明所提复用算法可有效提高网络的利用率。
재호미미망락여전통봉와망락량층망락중，유우호미미기참가이위부근적굉기참용호제공복무，차굉기참장일부분빈보분배급호미미기참，호미미기참여굉기참지간존재층간간우，저한제료망락적성능。침대저일문제，연구료가제고망락성능적빈보복용산법。산법기우사탄과이백격주종박혁이론，장굉기참건모위주박혁자，장호미미기참건모위종박혁자；연후분별장굉기참여호미미기참적이용솔작위평균탄토량여실진솔함수，천술료주종박혁자지간적교호무수임하대개；최후득출료대굉기참여호미미기참도최우적빈보복용궤제。방진결과표명소제복용산법가유효제고망락적이용솔。
In the two-tier networks consisting of femto-cell networks and conventional cellular networks,due to the fact that femto-cell base stations can provide services to nearby macro-cell users,and that macro base stations release a fractional spec-trum to the femto-cell base station,there exists cross-tier interference between femto-cell base stations and macro stations, which limits the network performance.For this problem,this paper studied the spectral reuse algorithm that can improve the network performance.Firstly,based on the Stackelberg leader-follower game theory,the algorithm modeled the macro base station as the leader,and modeled the femto-cell station as the follower.Secondly,it used the utilities of macro base stations and femto-cll stations as the average throughput and the distortion-rate function respectively,to state that the interaction be-tween the leader and the follower needs no price in the proposed strategy.Finally,it proposed the optimal strategies of spectral reuse for both macro base stations and femto-cell base stations.Simulation results show that the proposed algorithm can effec-tively improve the network utilities.