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1. 发明申请

US20160212738A1 Positioning of Wireless Devices 有权
标题翻译：无线设备定位
公开(公告)号：US20160212738A1
公开(公告)日：2016-07-21
申请号：US14913544
申请日：2013-08-27
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
发明人： Magnus THURFJELL , Kjell LARSSON , Peter ÖKVIST
IPC分类号： H04W72/04 , H04L5/00 , H04B7/04
CPC分类号： H04W72/048 , G01S1/44 , G01S3/38 , G01S5/12 , H04B7/0408 , H04B7/0456 , H04B7/046 , H04B7/0617 , H04B7/0639 , H04L5/0051 , H04L25/03 , H04L25/03949 , H04W64/00
摘要： A method performed by a network node (10) for finding a direction to a wireless device (20) in a wireless communication network is provided. The method comprises the step (S1) of the network node transmitting reference signal pairs on at least one pair of correlated antennas. Each reference signal pair has a unique phase difference between the signals in the signal pair, and the unique phase differences of the reference signal pairs are distributed over a given angular interval. The method further comprises the step (S2) of the network node receiving from the wireless device, in response to each pair of reference signals, a respective indication of a preferred pre-coding matrix, and the step (S3) of the network node determining a direction to the wireless device based on the received indications, information representative of the phase differences of the reference signal pairs, and phase information related to the indicated preferred pre-coding matrices.
摘要翻译：提供了一种由网络节点（10）执行的用于在无线通信网络中找到无线设备（20）的方向的方法。该方法包括网络节点在至少一对相关天线上发送参考信号对的步骤（S1）。每个参考信号对在信号对中的信号之间具有唯一的相位差，并且参考信号对的唯一相位差在给定的角度间隔上分布。该方法还包括网络节点从无线设备接收的响应于每对参考信号的优选预编码矩阵的相应指示的步骤（S2），以及网络节点确定的步骤（S3）基于接收到的指示到无线设备的方向，表示参考信号对的相位差的信息以及与所指示的优选预编码矩阵相关的相位信息。

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