公开(公告)号：US11374683B1

公开(公告)日：2022-06-28

申请号：US16703352

申请日：2019-12-04

Applicant: Marvell International Ltd.

Inventor： B Hari Ram ,  Vijay Ahirwar ,  Sri Varsha Rottela ,  Hongyuan Zhang ,  Sudhir Srinivasa ,  Nilesh Khude

IPC: H04L1/00 ,  H04L5/00

Abstract: A communication device generates a legacy portion of a physical layer (PHY) preamble of a PHY data unit. The legacy portion includes a plurality of legacy training fields and a legacy signal field that indicates a duration of the PHY data unit. The communication device generates a non-legacy portion of the PHY preamble to include a multi-bit signal field header to indicate a packet type of the PHY data unit from among a plurality of packet types defined by a wireless communication protocol, the plurality of packet types corresponding to a plurality of non-legacy signal field formats. The communication device generates a non-legacy portion of the PHY preamble to also include a non-legacy signal field having a field format i) selected from the plurality of non-legacy signal field formats and ii) consistent with the packet type indicated by the multi-bit signal field header.