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公开(公告)号：US20190132155A1
公开(公告)日：2019-05-02
申请号：US16234217
申请日：2018-12-27
申请人： FENG JIANG , ROBERT STACEY , JONATHAN SEGEV , QINGHUA LI , XIAOGANG CHEN
发明人： FENG JIANG , ROBERT STACEY , JONATHAN SEGEV , QINGHUA LI , XIAOGANG CHEN
摘要： This disclosure describes systems, methods, and devices related to a trigger-based null data packet (NDP) for channel sounding system. A device may send a trigger frame to a group of station devices, the group of station devices including a first station device, the trigger frame indicating a high efficiency (HE) long training field (HE-LTF) mode and a guard interval duration. The device may identify a HE trigger-based (TB) null data packet (NDP) received from the first station device, the HE TB NDP including a first packet extension field, wherein the HE TB NDP is associated with the HE-LTF mode and the guard interval duration indicated in the trigger frame. The device may send a downlink NDP including a second packet extension field, a second HE-LTF mode, and a second guard interval duration. The device may determine channel state information based on HE TB NDP received from the first station device.
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公开(公告)号：US20150382341A1
公开(公告)日：2015-12-31
申请号：US14498360
申请日：2014-09-26
申请人： QINGHUA LI , PO-KAI HUANG , RONGZHEN YANG , ROBERT STACEY , HUANING NIU , HUJIN YIN
发明人： QINGHUA LI , PO-KAI HUANG , RONGZHEN YANG , ROBERT STACEY , HUANING NIU , HUJIN YIN
IPC分类号： H04W72/04
CPC分类号： H04W74/06 , H04B7/0452 , H04W74/0816
摘要： Methods, apparatus, and systems for fast channel reservation in a Wi-Fi environment are discussed. More specifically, a communication station arranged for Clear Channel Assessment (CCA) channel status reporting, an access point, and communication methodologies therebetween are disclosed. Methods, apparatus, and systems described herein can be applied to 802.11ax downlink MU-MIMO as well as uplink MU-MIMO, either separately or simultaneously.
摘要翻译： 讨论了Wi-Fi环境中用于快速通道预留的方法，装置和系统。 更具体地，公开了布置用于清除信道评估（CCA）信道状态报告，接入点和它们之间的通信方法的通信站。 本文描述的方法，设备和系统可以单独地或同时地应用于802.11ax下行链路MU-MIMO以及上行链路MU-MIMO。
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