Network power optimization via white lists

• US 9,913,214 B2
• Filed: 09/23/2015
• Issued: 03/06/2018
• Est. Priority Date: 06/04/2013
• Status: Active Grant

• Current Assignee: Texas Instruments, Inc.
• Original Assignee: Texas Instruments, Inc.
• Inventors: Xhafa, Ariton E., Lu, Xiaolin, Zhou, Jianwei
• Primary Examiner(s): MEW, KEVIN D
• Application Number:
  US14/862,787
• Publication Number:
  US 20160014690A1
• Time in Patent Office: 895 Days
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 67/12 specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
• CPC Class Codes: H04W 52/02 Power saving arrangements in wired systems H04L12/12; signaling of mobile application services, e.g. low battery notifications H04W4/20
• CPC Class Codes: H04W 52/0219 where the power saving management affects multiple terminals
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

The white list generator identifies wireless sensor nodes that communicate via a wireless sensor network, to identifies time slots assigned for with each of the identified wireless sensor nodes, and to create and maintain a list of the identified wireless sensor nodes and corresponding time slots. The white list generator provides power control information to power a transceiver for reception of transmissions from each identified wireless sensor node based on the identified time slots corresponding to the identified wireless sensor node provided in the list.

Claims

1. A white list generator, comprising:

a processor that optimizes power consumption by performing the functions of;

node identification to identify wireless sensor nodes that communicate via a wireless sensor network;

slot/frame identification to identify time slots assigned for communication with each of the identified wireless sensor nodes; and

white list function to create a list of the identified wireless sensor nodes and corresponding time slots during a network initialization interval and maintain the list of the identified wireless sensor nodes and corresponding time slots.

2. The white list generator of claim 1, wherein the processor is configured to identify the wireless sensor nodes over a predetermined time interval.

3. The white list generator of claim 1, wherein the processor is configured to:

receive identification of additional wireless sensor nodes that indirectly communicate through an intermediate wireless sensor node; and

add to the list the additional wireless sensor nodes and time slots assigned for communication between the intermediate wireless sensor node and the additional wireless sensor nodes.

4. The white list generator of claim 3, wherein the identification of additional wireless sensor nodes comprises identification of the additional wireless sensor nodes that communicate with the wireless sensor nodes through a plurality of successive intermediate wireless sensor nodes.

5. The white list generator of claim 1, wherein the processor is further configured to:

identify frames containing the time slots assigned for communication with each of the identified wireless sensor nodes;

include identification of the frames in the list.

6. The white list generator of claim 5, wherein the processor provides power control information to power the transceiver for reception of transmissions from each identified wireless sensor node based on the identified frames corresponding to the identified wireless sensor node provided in the list.

7. A method performed by white list generator, comprising:

identifying wireless sensor nodes which communicate via a wireless sensor network;

identifying time slots assigned for communication with each of the identified wireless sensor nodes;

creating a list of the identified wireless sensor nodes and corresponding time slots during a network initialization interval and maintaining the list of the identified wireless sensor nodes and corresponding time slots; and

providing power control information to optimize power consumption.

8. The method of claim 7, wherein the identifying of wireless sensor nodes is performed over a predetermined interval at initialization of the wireless sensor network.

9. The method of claim 7, further comprising:

receiving from a transceiver identification of additional wireless sensor nodes which indirectly communicates through an intermediate wireless sensor node; and

adding to the list the additional wireless sensor nodes and time slots assigned for communication between the intermediate wireless sensor node and the additional wireless sensor nodes.

10. The method of claim 9, wherein the identification of additional wireless sensor nodes comprises identification of wireless sensor nodes that communicate through a plurality of successive intermediate wireless sensor nodes.

11. The method of claim 9, further comprising:

identifying frames containing the time slots assigned for communication with each of the identified wireless sensor nodes;

including identification of the frames in the list; and

powering, via power control information, the transceiver for reception of transmissions from each identified wireless sensor node based on the identified frames corresponding to the identified wireless sensor node provided in the list.

12. The method of claim 9, further comprising powering, via power control information, the transceiver for reception of transmissions during all time slots prior to identification of a wireless sensor node in direct communication with the transceiver.