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US 2022/0045725 A1Published application
Null Data Packet Sounding for Preamble Puncture Techniques
AssigneeMediaTek Singapore Pte. Ltd.
InventorsYongho Seok, Jianhan Liu, Chao-Chun Wang, James Chih-Shi YEE
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Abstract
Null Data Packet Sounding for preamble punctured Physical Layer Convergence Procedure Protocol Data Unit (PPDU) for efficient use of a wireless channel bandwidth where a primary service co-exists.
Claims20
A wireless communication method comprising:
- encoding a preamble punctured Null Data Packet Announcement (NDPA) for a new connection at a first station;
- encoding a preamble punctured Null Data Packet (NDP) for the new connection at the first station;
- wherein the preamble punctured NDPA includes a preamble puncture mode indicator;
- transmitting by the first station the preamble punctured Procedure Protocol Data Unit (PPDU) including the preamble punctured NDPA and the preamble punctured NDP on a primary channel and a secondary channel for the new connection to a second station, wherein the secondary channel for the new connection overlaps with a secondary channel of an existing connection;
- and
- receiving at the first station a PPDU from the second station carrying a compressed beamforming feedback frame, wherein the compressed beamforming feedback frame contains a plurality of beamforming feedbacks of which each is obtained from a contiguous Resource Unit (RUs).
3 more elements
A wireless communication method comprising:
- receiving at a second station a preamble punctured Procedure Protocol Data Unit (PPDU) on a primary channel and one or more secondary channels for a new connection, wherein at least one secondary channel of the new BSS overlaps with a secondary channel of an existing connection;
- decoding at the second station a preamble punctured Null Data Packet Announcement (NDPA) in the preamble punctured PPDU;
- decoding at the second station a preamble punctured Null Data Packet (NDP) in the preamble punctured PPDU;
- decoding at the second station a preamble puncture mode indicator in a signal field of the preamble punctured PPDU;
- encoding at the second station a compressed beamforming feedback in a preamble punctured Multi-User Multi-Input Multi-Output (MU-MIMO) PPDU in response to the preamble punctured NDPA and preamble punctured NDP;
- and
- transmitting by the second station the preamble punctured MU-MIMO PPDU on the primary channel and the one or more secondary channels to a first station.
4 more elements
Dependencies are inferred from the claim text.