首页> 外国专利> FEMTOCELL CHANNEL ASSIGNMENT AND POWER CONTROL FOR IMPROVED FEMTOCELL COVERAGE AND EFFICIENT CELL SEARCH

FEMTOCELL CHANNEL ASSIGNMENT AND POWER CONTROL FOR IMPROVED FEMTOCELL COVERAGE AND EFFICIENT CELL SEARCH

机译:FEMTOCELL信道分配和功率控制,以改善FEMTOCELL的覆盖范围和有效的小区搜索

摘要

A method and a communication system including femtocells within a macrocell efficiently manage interference between the different femtocells, and between each femtocell and a macrocell. An efficient frequency assignment scheme for the femtocells minimizes interference between a femtocell and a macrocell and among different femtocells using a spectrum-sensing technique carried out by the femtocells. The frequency assignment scheme selects a suitable channel from a set of candidate channels and ensures that the femtocell has an acceptable coverage area even when it is close to the macrocell base station (BS). The frequency assignment scheme favors a co-channel implementation to take advantage of the hand-off and cell search characteristics of the co-channel implementation. In one embodiment, a joint power control and frequency band assignment technique is used, which partitions the coverage area of the macrocell into an inner region, a power control region, and an outer region.
机译:在宏小区内包括毫微微小区的方法和通信系统有效地管理不同的毫微微小区之间以及每个毫微微小区与宏小区之间的干扰。使用毫微微小区执行的频谱感测技术,用于毫微微小区的有效频率分配方案使毫微微小区与宏小区之间以及不同毫微微小区之间的干扰最小化。频率分配方案从一组候选信道中选择一个合适的信道,并确保毫微微小区即使在靠近宏小区基站(BS)时也具有可接受的覆盖区域。频率分配方案有利于同信道实现,以利用同信道实现的越区切换和小区搜索特性。在一个实施例中,使用联合功率控制和频带分配技术,该技术将宏小区的覆盖区域划分为内部区域,功率控制区域和外部区域。

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