Invention Grant
- Patent Title: Channel state information for multiple access points
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Application No.: US17012796Application Date: 2020-09-04
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Publication No.: US11764845B2Publication Date: 2023-09-19
- Inventor: Qinghua Li , Feng Jiang , Xiaogang Chen , Po-Kai Huang , Jonathan Segev , Dibakar Das
- Applicant: Intel Corporation
- Applicant Address: US CA Santa Clara
- Assignee: Intel Corporation
- Current Assignee: Intel Corporation
- Current Assignee Address: US CA Santa Clara
- Agency: Schwegman Lundberg & Woessner, P.A.
- Main IPC: H04B7/06
- IPC: H04B7/06 ; H04B7/024 ; H04B7/0452 ; H04W84/12

Abstract:
Methods, apparatuses, and computer readable media for channel state information for multiple access points are disclosed. Channel station information (CSI) may be coordinated for multiple access points (APs) where one AP may act as a master AP with other AP acting as slave APs. The channel station information may be based on information from null data packets received by stations from multiple-APs, which may enable a multi-AP coordinated beamforming (CBF) to be determined based on the received first CSI reports. New frame formats are disclosed that include fields for including APs. Overlapping basic service set (OBSS) stations may respond to APs that are not within their BSS. Some embodiments relate to passive range finding in a multi-AP sounding where location configuration information (LCI) changes for one of the APs.
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