	US 12,323,918 B2
	Method for transmitting wake-up packet in communications system, and device
Meilu Lin, Shenzhen (CN); Ming Gan, Shenzhen (CN); Yuchen Guo, Shenzhen (CN); Xun Yang, Shenzhen (CN); Yun Liu, Shenzhen (CN); and Jian Yu, Shenzhen (CN)
Assigned to Huawei Technologies Co., Ltd, Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Aug. 26, 2022, as Appl. No. 17/896,976.
Application 17/896,976 is a continuation of application No. 16/475,628, granted, now 11,452,042, previously published as PCT/CN2017/089953, filed on Jun. 26, 2017.
Claims priority of application No. 201610674267.8 (CN), filed on Aug. 15, 2016.
Prior Publication US 2023/0067562 A1, Mar. 2, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 52/02 (2009.01); H04B 7/06 (2006.01); H04L 27/26 (2006.01)

CPC H04W 52/0235 (2013.01) [H04B 7/0617 (2013.01); H04L 27/2627 (2013.01); H04W 52/0248 (2013.01)]

20 Claims

1. A wake-up packet transmission method, wherein the method comprises:

generating, by a transmit end device, a wake-up packet (WUP), wherein the WUP is used to wake up a main transceiver of a receive end device and the WUP comprises a wake-up preamble field and a data field, and the wake-up preamble field of the WUP is transmitted before the data field of the WUP, and the wake-up preamble field is used to indicate a transmission rate of the data field, and wherein the wake-up preamble field is used by the receive end device to perform time synchronization; and

sending, by the transmit end device, the WUP, wherein the data field of the WUP is sent using the transmission rate indicated by the preamble field,

wherein in response to a sequence included in the wake-up preamble field, the receive end device performs time synchronization based on the sequence and determines the transmission rate of the data field of the WUP based on the sequence, and wherein the transmission rate is indicated by the wake-up preamble field based on a correspondence between the sequence and the transmission rate.