公开(公告)号：US20140154992A1

公开(公告)日：2014-06-05

申请号：US13691912

申请日：2012-12-03

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Matthew A. Silverman ,  Jeffrey R. Adams ,  David Kloper ,  Yanxin Na ,  Narayan Vishwanathan ,  Daniel Wee

IPC: H04W16/28

CPC classification number: H04W16/28 ,  H04B7/0626 ,  H04B7/0634

Abstract: A channel sounding scheme is presented herein that relies on a combination of a first channel sounding procedure and a second channel sounding procedure. The first channel sounding technique is one that involves an exchange of dedicated channel sounding related signals to determine channel conditions between the first wireless communication device and the particular second wireless communication device. The second channel sounding technique is one in which channel conditions are implicitly discovered from any signals transmitted by the particular second wireless communication device to the first wireless communication device. A first wireless communication device computes updates to steering matrix information used for beamforming one or more signal streams to a particular second wireless communication device based on a combination of the first channel sounding technique and the second channel sounding technique.

Abstract translation: 此处呈现依赖于第一声道探测程序和第二声道探测程序的组合的声道探测方案。 第一通道探测技术是涉及专用信道探测相关信号的交换以确定第一无线通信设备和特定第二无线通信设备之间的信道状况的技术。 第二信道探测技术是从特定的第二无线通信设备向第一无线通信设备发送的任何信号隐含地发现信道条件的方法。 第一无线通信设备基于第一信道探测技术和第二信道探测技术的组合，计算用于将一个或多个信号流波束成形到特定第二无线通信设备的导引矩阵信息的更新。

公开(公告)号：US09055449B2

公开(公告)日：2015-06-09

申请号：US13691912

申请日：2012-12-03

Applicant: Cisco Technology, Inc.

Inventor： Matthew A. Silverman ,  Jeffrey R. Adams ,  David Kloper ,  Yanxin Na ,  Narayan Vishwanathan ,  Daniel Wee

IPC: H04B1/00 ,  H04B15/00 ,  H04W16/28

CPC classification number: H04W16/28 ,  H04B7/0626 ,  H04B7/0634

Abstract: A channel sounding scheme is presented herein that relies on a combination of a first channel sounding procedure and a second channel sounding procedure. The first channel sounding technique is one that involves an exchange of dedicated channel sounding related signals to determine channel conditions between the first wireless communication device and the particular second wireless communication device. The second channel sounding technique is one in which channel conditions are implicitly discovered from any signals transmitted by the particular second wireless communication device to the first wireless communication device. A first wireless communication device computes updates to steering matrix information used for beamforming one or more signal streams to a particular second wireless communication device based on a combination of the first channel sounding technique and the second channel sounding technique.

Abstract translation: 此处呈现依赖于第一声道探测程序和第二声道探测程序的组合的声道探测方案。 第一通道探测技术是涉及专用信道探测相关信号的交换以确定第一无线通信设备和特定第二无线通信设备之间的信道状况的技术。 第二信道探测技术是从特定的第二无线通信设备向第一无线通信设备发送的任何信号隐含地发现信道条件的方法。 第一无线通信设备基于第一信道探测技术和第二信道探测技术的组合，计算用于将一个或多个信号流波束成形到特定第二无线通信设备的导引矩阵信息的更新。