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Power efficient wireless connectivity

專利號
US10080193B1
公開日期
2018-09-18
申請人
Amazon Technologies, Inc.(US WA Seattle)
發(fā)明人
Gilles-Arnaud Bleu-Laine; Eduardo Bezerra Valentin; Aditya Yashwant Bhave; James David Meyers; Hanxiao Fu
IPC分類
H04L29/08; H04W52/02
技術(shù)領(lǐng)域
keepalive,wakeup,power,mode,server,may,circuitry,low,device,messages
地域: WA WA Seattle

摘要

Described herein are systems and methods for maintaining a wireless connection to a remote server while a device is in a low power mode. As a result of maintaining the connection, the device can receive messages triggering a wakeup event and placing the device in a normal power mode, enabling the device to be controlled remotely. To maintain the connection, the device transitions from sending encrypted network messages to a server from a first interval while in the normal power mode to a second interval while in the low power mode. In addition, the device sends unencrypted network messages to the server at the first interval using low power circuitry. The low power circuitry receives messages from the server and may trigger the device to enter the normal power mode and/or a connection maintenance mode.

說明書

In some examples, the device 102 may configure the low power circuitry 106 to trigger multiple wakeup events using multiple wakeup signatures 900. For example, a first wakeup signature 900a may include a first source port 904a and a second wakeup signature 900b may include a second source port 904b. Thus, the low power circuitry 106 may trigger a first wakeup event using the first wakeup signature 900a and may trigger a second wakeup event using the second wakeup signature 900b. Additionally or alternatively, multiple wakeup signatures 900 may include different source addresses 902 and/or destination ports 908 to trigger individual wakeup events without departing from the disclosure.

FIG. 10 is a communication diagram illustrating a communication event according to embodiments of the present disclosure. As illustrated in FIG. 10, the CPU 104 may determine (810) to enter a low power mode, may send (812) a low power mode notification to the server(s) 112, and may send (814) configuration information to the low power circuitry 106, including an instruction to trigger a normal wakeup event when an incoming message matches a wakeup signature. The low power circuitry 106 may configure (816) the low power circuitry 106 and the CPU 104 may enter (818) the low power mode.

權(quán)利要求

1
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