公开(公告)号：US20160380729A1

公开(公告)日：2016-12-29

申请号：US15261513

申请日：2016-09-09

Applicant: Broadcom Corporation

Inventor： Ron Porat ,  Sriram Venkateswaran

IPC: H04L5/00 ,  H04B7/06 ,  H04W72/04

CPC classification number: H04L5/001 ,  H04B7/0408 ,  H04B7/0452 ,  H04B7/0617 ,  H04B7/0636 ,  H04L5/0007 ,  H04L5/0041 ,  H04L5/0048 ,  H04L12/2854 ,  H04L12/4604 ,  H04L27/261 ,  H04W72/0453

Abstract: A wireless communication device (alternatively, device, WDEV, etc.) includes at least one processing circuitry configured to support communications with other WDEV(s) and to generate and process signals for such communications. In some examples, the device includes a communication interface and a processing circuitry, among other possible circuitries, components, elements, etc. to support communications with other WDEV(s) and to generate and process signals for such communications. The WDEV receives a null data packet (NDP) announcement frame that specifies a sub-carrier (SC) or tone grouping factor, a communication channel bandwidth, and other WDEV(s) to respond with beamforming feedback. The WDEV process the NDP announcement frame to determine it is to respond, and if so, then receives a NDP sounding frame that includes long training fields (LTFs) and pilots at predetermined locations and generates beamforming feedback of communication channel estimates at SCs as determined based on a sub-carrier roster look up table (LUT).

Abstract translation: 无线通信设备（备选地，设备，WDEV等）包括至少一个处理电路，其被配置为支持与其他WDEV的通信，并且生成和处理用于这种通信的信号。 在一些示例中，该设备包括通信接口和处理电路以及其他可能的电路，组件，元件等，以支持与其他WDEV的通信，并且生成和处理用于这种通信的信号。 WDEV接收指定子载波（SC）或音调分组因子，通信信道带宽和其他WDEV以响应波束成形反馈的空数据分组（NDP）通知帧。 WDEV处理NDP通知帧以确定其是否响应，并且如果是，则在预定位置处接收包括长训练场（LTF）和导频的NDP探测帧，并且基于所确定的在SC上生成通信信道估计的波束成形反馈 在子载波上查找表（LUT）。

公开(公告)号：US09923680B2

公开(公告)日：2018-03-20

申请号：US15261513

申请日：2016-09-09

Applicant: Broadcom Corporation

Inventor： Ron Porat ,  Sriram Venkateswaran

IPC: H04L5/00 ,  H04W72/04 ,  H04B7/06 ,  H04B7/0408 ,  H04B7/0452 ,  H04L12/28 ,  H04L12/46 ,  H04L27/26

CPC classification number: H04L5/001 ,  H04B7/0408 ,  H04B7/0452 ,  H04B7/0617 ,  H04B7/0636 ,  H04L5/0007 ,  H04L5/0041 ,  H04L5/0048 ,  H04L12/2854 ,  H04L12/4604 ,  H04L27/261 ,  H04W72/0453

Abstract: A wireless communication device (alternatively, device, WDEV, etc.) includes at least one processing circuitry configured to support communications with other WDEV(s) and to generate and process signals for such communications. In some examples, the device includes a communication interface and a processing circuitry, among other possible circuitries, components, elements, etc. to support communications with other WDEV(s) and to generate and process signals for such communications. The WDEV receives a null data packet (NDP) announcement frame that specifies a sub-carrier (SC) or tone grouping factor, a communication channel bandwidth, and other WDEV(s) to respond with beamforming feedback. The WDEV process the NDP announcement frame to determine it is to respond, and if so, then receives a NDP sounding frame that includes long training fields (LTFs) and pilots at predetermined locations and generates beamforming feedback of communication channel estimates at SCs as determined based on a sub-carrier roster look up table (LUT).