Systems and methods for disseminating messages among a fabric network

• US 10,292,102 B2
• Filed: 08/07/2017
• Issued: 05/14/2019
• Est. Priority Date: 09/05/2014
• Status: Active Grant

• Current Assignee: Google LLC (Alphabet Inc.)
• Original Assignee: Google LLC (Alphabet Inc.)
• Inventors: Szewczyk, Robert, Krishnamurthy, Vaas, Quattlebaum, Robert, Lee, Jeffery Theodore
• Primary Examiner(s): Mered, Habte
• Application Number:
  US15/670,790
• Publication Number:
  US 20170339638A1
• Time in Patent Office: 645 Days
• CPC Class Codes: H04L 12/1863 comprising mechanisms for improved reliability, e.g. status reports arrangements for detecting or preventing errors by carrying supervisory signal the return channel H04L1/16
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Systems and methods for waking a fabric network of devices and communicating messages among the devices are described herein. An electronic device can communicate with other electronic devices of a fabric network broadcasting a wake message to the fabric network in response to an awakening event. The wake message can include a reason for triggering a wakeup of each device in the fabric network and a wake time signaling period. After the wake time signaling period lapses, a fabric message can be broadcasted to the fabric network, and the fabric message can be selectively rebroadcasted.

Claims

1. A method for communicating messages among devices of a fabric network, the method implemented in a first device of the fabric network, the method comprising:

receiving a wake packet via wireless communications circuitry from a second device of the fabric network, the wake packet comprising a plurality of fields, wherein a first field includes a wake reason, wherein the wake packet causes the first device to transition to a wake state, and operating in the wake state comprises;

extracting the wake reason from the wake packet;

evaluating the extracted wake reason;

executing an action based on the evaluation that enables the first device to replicate an operational state of the second device, wherein the operational state is defined in the wake reason;

operating the first device according to the operational state; and

selectively rebroadcasting the received wake packet via the first wireless communications circuitry during one of a plurality of rebroadcast time periods, wherein the wake packet is associated with a wake time signaling period, and wherein the received wake packet is selectively rebroadcasted in any one or more of the plurality of rebroadcast time periods until the wake time signaling period lapses, and wherein the first device commences operation according to the operational state prior to an end of the wake time signaling period.

2. The method of claim 1, wherein the wake reason comprises an alarm, and wherein the operational state comprises sounding a buzzer.

3. The method of claim 1, wherein the wake reason comprises a pre-alarm, and wherein the operational state comprises playing back a spoken message through a speaker.

4. The method of claim 1, wherein rebroadcasting the received wake packet comprises:

initially broadcasting the wake packet in a non-clear channel assessment (NCCA) mode for a NCAA time period; and

subsequent to the NCAA time period, broadcasting the received wake packet in a clear channel assessment (CCA) mode until the wake time siunaling period lapses.

5. The method of claim 1, further comprising authenticating the received wake packet.

6. The method of claim 1, wherein the plurality of fields further comprise:

a sequence number field that defines a sequence number of the received wake packet; and

an authentication field that defines authentication data.

7. A first device that forms part of a fabric network comprising:

wireless communications circuitry operative to transmit and receive wireless signals; and

a processor coupled to the communications circuitry and operative to;

receive a wake packet via the wireless communications circuitry from a second device of the fabric network, the wake packet comprising a plurality of fields, wherein a first field includes a wake reason, wherein the wake packet causes the first device to transition to a wake state, and operating in the wake state, the processor is operative to;

extract the wake reason from the wake packet;

evaluate the extracted wake reason;

execute an action based on the evaluation that enables the first device to replicate an operational state of the second device, wherein the operational state is defined in the wake reason;

operate the first device according to the operational state; and

selectively rebroadcast the received wake packet via the first wireless communications circuitry during one of a plurality of rebroadcast time periods, wherein the wake packet is associated with a wake time signaling period, and wherein the received wake packet is selectively rebroadcasted in any one or more of the plurality of rebroadcast time periods until the wake time signaling period lapses, and wherein the first device commences operation according to the operational state prior to an end of the wake time signaling period.

8. The first device of claim 7, wherein the wake reason comprises an alarm, and wherein the operational state comprises sounding a buzzer.

9. The first device of claim 7, wherein the wake reason comprises a pre-alarm, and wherein the operational state comprises playing back a spoken message through a speaker.

10. The first device of claim 7, wherein the processor is operative to:

initially broadcast the wake packet in a non-clear channel assessment (NCCA) mode for a NCAA time period; and

subsequent to the NCAA time period, broadcast the received wake packet in a clear channel assessment (CCA) mode until the wake time signaling period lapses.

11. The first device of claim 7, wherein the processor is operative to authenticate the received wake packet.

12. The first device of claim 7, wherein the plurality of fields further comprise:

a sequence number field that defines a sequence number of the received wake packet; and

an authentication field that defines authentication data.

13. A method for communicating messages among devices of a fabric network, the method implemented in a first device of the fabric network, the method comprising:

receiving a wake packet via wireless communications circuitry from a second device of the fabric network, the wake packet comprising a plurality of fields, wherein a first field includes a wake reason, wherein the wake packet causes the first device to transition to a wake state, and operating in the wake state comprises;

executing an action based on the wake reason, wherein the action enables the first device to replicate an operational state of the second device, wherein the operational state is defined in the wake reason; and

selectively rebroadcasting the received wake packet via the first wireless communications circuitry during one of a plurality of rebroadcast time periods, wherein the wake packet is associated with a wake time signaling period, and wherein the received wake packet is selectively rebroadcasted in any one or more of the plurality of rebroadcast time periods until the wake time signaling period lapses, and wherein the first device commences operation according to the operational state prior to an end of the wake time signaling period.

14. The method of claim 13, wherein the wake reason comprises an alarm, and wherein the operational state comprises sounding a buzzer.

15. The method of claim 13, wherein the wake reason comprises a pre-alarm, and wherein the operational state comprises playing back a spoken message through a speaker.