Huawei Technologies Co., Limited

Nortel Networks Corporation

Osama Aboul-magd

Wen Tong

Peiying Zhu

Hang Zhang

Yan Xin

Michael Peter Montemurro

Ming Gan

Yunbo Li

Jian Yu

Jian Ding

Jung Hoon Suh

Kwok Shum Au

George Calcev

Sheng Sun

Bin Chen

Alex Stephenne

Meilu Lin

Sameh Rabie

Ngoc-Dung Dao

Phillip Barber

Yapeng Wu

Junghoon Suh

Ho-Ting Cheng

Stephen McCann

Kwokshum Au

A method includes sending, by an access point (AP) to one or more stations (STAs), a request for channel state information (CSI). The request includes a null data packet announcement (NDPA) frame including a common information field. The common information field including an indicator of whether trigger based (TB) sounding or non-trigger based (non-TB) is being used. Then, the method includes receiving, by the AP from the one or more STAs, a CSI feedback response based on the request. The common information field may be a null data packet announcement (NDPA) variant field in an alternative name and the indicator may utilize 1 bit.

Null data packet announcement (NDPA) frame indication

The present disclosure provides methods and apparatus related to NDPA frame indication. An aspect of the disclosure provides a method. The method includes sending, to one or more stations (STAs), a request for channel state information (CSI). The request includes a null data packet announcement (NDPA) frame including a first field and a second field. The first field indicates presence of the second field, and the second field indicates a variant of the NDPA frame. The method further includes receiving, from the one or more STAs, a CSI feedback response based on the request. In some embodiments, the first field is one of a sounding dialog token field and indicates the presence of the second field via at least two bits. In some embodiments, the first field is a frame control field and indicates the second field via a 4-bit subtype subfield.

A procedure and frame structure for Wi-Fi sensing is described. An aspect of the disclosure provides a method of sensing. Such a method includes sending, by an initiating station (STA) to one or more responder STAs, a sensing request comprising a sensing announcement frame (SAF) indicating sensing set-up information including frame structure information. The SAF includes at least one field indicating the frame structure information including one or more of: a sensing set-up identifier (ID), an SAF version ID, a sensing session ID, a measurement set-up ID, and a measurement instance ID. The method further includes receiving, by the initiating STA from the one or more responder STAs, one or more responses based on the sensing request.

Methods and systems for Wi-Fi sensing announcement

The present disclosure provides methods and apparatus for coordinated beamforming. An aspect of the disclosure provides a method. The method includes sending, by a first access point (AP) of a plurality of collaborating APs, to one or more stations (STAs) associated with the plurality of collaborating APs, a request for channel state information (CSI) associated with the one or more STAs and the first AP. The method further includes receiving a response including the CSI associated with the one or more STAs and the first AP. The method further includes sending, to a second AP of the plurality of collaborating APs, a sounding request indicating the second AP to request, from the one or more STAs, CSI associated with the one or more STAs and the second AP. The method further includes sharing CSI information between the first and the second AP.

Protocol and frame format for coordinated beamforming

A method of communication includes duplication of a first field of a first content channel into a third field in a third content channel and applying a modulation and coding scheme (MCS) to only one of the first field and the third field. The first content channel is a first portion of a frame and the third content channel is a third portion of the frame. Duplication of a second field of a second content channel into a fourth field in a fourth content channel and applying a modulation and coding scheme (MCS) to only one of the second field and the fourth field. The second content channel is a second portion of a frame and the fourth content channel is a fourth portion of the frame. The first content channel and the second content channel form a first group of content channels and the third content channel and the fourth content channel form a second group of content channels. The method then transmits the frame.

EHT-SIG detection with various diversity schemes

A method for an access point to schedule obtaining frames from stations connected thereto is provided. Real-time applications provide frames and frame due dates to the stations. The frames and their due dates are stored in respective buffers of the stations. Each station identifies the earliest due date of all its buffered frames and provides the earliest due date to the access point. The access point orders the due dates and schedules the stations according to the order of the due dates. The access point then communicates with the stations according to the schedule and obtains the frames. A WLAN system implementing the method is also provided.

Systems and methods for providing a low delay service in a wireless local area network (WLAN)

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Kanata, Canada

Osama Aboul-magd