毫米波独立网络中的协调初始接入
Coordinated Initial Access in Millimetre Wave Standalone Networks
摘要：
针对第五代移动通信网络（5G），提出了一种新的簇状毫米波小小区（mmSC）协作初始接入（IA）方案。该解决方案是一种用于超密集毫米波独立网络的高效和快速初始接入的方法，而不存在在较低频率上操作的重叠传统网络。与采用耗时的穷举搜索的当前全波束扫描方案相比，一个集群内的mmSC将基于经由回程链路彼此共享的功率延迟分布（PDP）测量报告以协调的方式执行IA过程，从而避免全波束扫描。该方案显著减少了初始接入时间，增强了接入鲁棒性，降低了移动终端的成本和复杂度。
英文摘要：
In this paper, a novel coordinated initial access (IA) scheme for clustered millimeter wave small cells (mmSCs) is proposed for the fifth generation mobile communication networks (5G). This solution is a method for efficient and fast initial access for ultra-dense millimeter wave standalone networks without presence of overlaid legacy networks operating on lower frequency. In contrast to the current full beam sweep scheme, where time consuming exhaustive searching is employed, the mmSCs within one cluster will perform the IA procedure in a coordinated manner based on the power delay profile (PDP) measurement reports shared with each other via the backhaul links and thereby avoiding the full beam sweep. The proposed scheme significantly reduces the initial access time, enhances the access robustness and reduces the cost and complexity of the mobile terminals.
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