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Method, system, base station and user equipment for determining delay value of cyclic delay diversity

机译：确定循环时延分集时延值的方法，系统，基站和用户设备

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摘要

Methods, systems, BS and UE for determining Cyclic Delay Diversity delay value are disclosed. One method includes Step A1, obtaining an optimal CDD delay value in the precoding codebook for obtaining the best channel quality on each sub-band respectively based on a result of channel estimation and feeding back to the BS by the UE; Step A2, selecting an overall CDD delay value in the precoding codebook based on the local optimal CDD delay values received from each UE by the BS; Step A3, updating the CDD delay values in the precoding codebook based on the overall CDD delay value in the precoding codebook by the BS. The invention provides provide a method for determining the CDD delay value (group) in precoding system with CDD, and a relating system, a base station, and a user equipment, to realize adaptive update of the CDD delay value (group), thereby ensuring the system performance to the most extent.

机译：公开了用于确定循环延迟分集延迟值的方法，系统，BS和UE。一种方法包括：步骤A1，根据信道估计的结果，在预编码码本中获得最优的CDD延迟值，以分别获得每个子带的最佳信道质量，并由UE反馈给BS;步骤A2，根据基站从每个UE接收的本地最优CDD延迟值，选择预编码码本中的总CDD延迟值;步骤A3，基站根据预编码码本中的总CDD延迟值，更新预编码码本中的CDD延迟值。本发明提供了一种在带有CDD的预编码系统中确定CDD延迟值（组）的方法，以及相关系统，基站和用户设备，以实现CDD延迟值（组）的自适应更新，从而确保最大限度地提高系统性能。

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公开/公告号EP1919115A3

专利类型
公开/公告日2014-01-29

原文格式PDF
申请/专利权人 NTT DOCOMO INC.;
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申请/专利号EP20070021295
发明设计人 SHE XIAOMING;CHEN LAN;LIU JINGXIU;
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申请日2007-10-31
分类号H04L1/00;H04L1/06;H04B7/04;H04B7/06;H04L5/00;H04L25/03;H04L27/26;
国家 EP
入库时间 2022-08-21 15:51:32

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