公开(公告)号：US20240023040A1

公开(公告)日：2024-01-18

申请号：US17813216

申请日：2022-07-18

Applicant: Cisco Technology, Inc.

Inventor： ARDALAN ALIZADEH ,  JOHN MATTHEW SWARTZ ,  SIVADEEP REDDY KALAVAKURU ,  MATTHEW AARON SILVERMAN

IPC: H04W56/00 ,  H04L5/00

CPC classification number: H04W56/0015 ,  H04L5/0035 ,  H04L5/0007 ,  H04W88/08

Abstract: Coordinated Orthogonal Frequency Division Multiple Access (C-OFDMA) in high density networks may be provided. A primary Access Point (AP) and a subordinate AP may be caused to use an omnidirectional antenna pattern during a synchronization period. Next, the primary AP and the subordinate AP may be caused to use an omnidirectional antenna pattern during a time in which the primary AP sends a subordinate Trigger Frame (TF) during a first C-OFDMA period. The primary AP and the subordinate AP may then be caused to use a directional antenna pattern during times in which the primary AP and the subordinate AP Uplink (UL) data during the first C-OFDMA period and Downlink (DL) data during the first C-OFDMA period.

公开(公告)号：US20220232551A1

公开(公告)日：2022-07-21

申请号：US17154131

申请日：2021-01-21

Applicant: Cisco Technology, Inc.

Inventor： MATTHEW AARON SILVERMAN ,  ARDALAN ALIZADEH ,  POOYA MONAJEMI ,  JEROME HENRY

IPC: H04W72/04

Abstract: In one embodiment, a method comprises first causing, by a controller device, wireless access points (APs) to allocate first non-interfering wireless channels for a prescribed reliable data service for wireless client devices in a WLAN; second causing the wireless APs to allocate a second shared channel having a bandwidth that is at least twice the corresponding bandwidth of any of the first non-interfering wireless channels; allocating for each wireless client device a corresponding location service interval on the second shared channel for transmission of at least a corresponding identifiable wireless data unit for locating the corresponding wireless client device between two or more of the wireless APs; and determining a location of at least one of the wireless client devices based on reception of at least the corresponding wireless data unit between the one wireless client device and the two or more wireless APs during the corresponding location service interval.