CAJ | 학술논문

为了解决下一代演进移动通信系统在异构网场景由于低功率基站在高功率基站覆盖区域的随意分布而导致的小区间干扰问题及容量速率限制,提出了一种载波聚合系统的成员载波选择和干扰协同方法.该方法基于修正的载波公平比例准则,动态地在小区间协同选择成员载波.为了进一步提高低功率节点的系统容量,设计了新的基于调和平均数的用户小区选择准则及算法.仿真结果表明,与频率复用因子为1的系统相比,设计的方法由于静默了部分高功率节点用户成员载波,从而使低功率节点用户获得更多的选择机会,可提高低功率节点小区的容量.
위료해결하일대연진이동통신계통재이구망장경유우저공솔기참재고공솔기참복개구역적수의분포이도치적소구간간우문제급용량속솔한제,제출료일충재파취합계통적성원재파선택화간우협동방법.해방법기우수정적재파공평비례준칙,동태지재소구간협동선택성원재파.위료진일보제고저공솔절점적계통용량,설계료신적기우조화평균수적용호소구선택준칙급산법.방진결과표명,여빈솔복용인자위1적계통상비,설계적방법유우정묵료부분고공솔절점용호성원재파,종이사저공솔절점용호획득경다적선택궤회,가제고저공솔절점소구적용량.
The evolved next generation wireless system with frequency reuse one suffers from the performance loss due to the interference between Macro cell and Pico cell in heterogeneous networks. This paper presents interfer-ence coordination scheme by component carrier selection that dynamically selects the component carrier coordi-nately among the cells in the carrier aggregation system. The scheme reserves the proper portion of carriers dur-ing which the Macro nodes are partially deactivated allowing the users of Pico cell to be served with lower inter-ference. To further improve the cell-edge performance,new user cell association by the harmonic mean rate met-ric is also proposed. Simulation results show that the proposed scheme can achieve high cell-average and cell-edge throughput for the Pico cell in the heterogeneous networks.