| 摘要: |
| 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。 |
| 关键词: 异构网；载波选择 小区间干扰；小区选择 |
| DOI： |
|
| 基金项目:国家自然科学基金资助项目( 61102047)；教育部新世纪优
秀人才支持计划（NCET-08-0891）；陕西省自然科学基金资助项目（2011JQ8027）；陕西省
教育厅自然科学基金项目（11JK1021） |
|
| Interference coordination by component carrier selection for carrier aggregation system in heterogeneous networks |
| SUN Chang-yin,JIANG Jing,LU Guang-yue |
| () |
| Abstract: |
| The evolved next generation wireless system with frequency reuse one s
uffers from the performance loss due to the interference between Macro cell and
Pico cell in heterogeneous networks. This paper presents interference coordinati
on scheme by component carrier selection that dynamically selects the component
carrier coordinately among the cells in the carrier aggregation system. The sche
me reserves the proper portion of carriers during which the Macro nodes are part
ially deactivated allowing the users of Pico cell to be served with lower interf
erence. To further improve the cell-edge performance, new user cell association
by the harmonic mean rate metric 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. |
| Key words: heterogeneous network carrier aggregation inter-cell interference coordination user cell association |
