IP Library › Granted Patent US 11,653,302
Granted Patent B2
US 11,653,302 · App. 16/923,842 · Granted May 16, 2023

Method and apparatus for low power channel access

Inventors: Kaiying Lv (Guangdong, CN); Nan Li (Guangdong, CN); Bo Sun (Guangdong, CN)
Assignee: ZTE CORPORATION
H04W52/0229H04J3/0673H04J3/0682H04W52/0206H04W52/0216H04W84/18H04W88/06
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 11,653,302
App. No.
16/923,842
Granted
May 16, 2023
Kind
B2
Abstract

Systems, methods and devices for low power channel access using a wake up radio are disclosed herein. In accordance with one exemplary embodiment, a method performed by a communication device includes: receiving a wake up signal at a wake up radio from a communication node at a receipt time, wherein the wake up signal indicates a node active time for a main radio to begin communicating with the communication node; determining a transition time between an initiation time for the main radio and a device active time, wherein the device active time is during the node active time; determining a delay time from the receipt time to the initiation time; initiating the main radio at the initiation time; and communicating with the communication node using the main radio during the device active time.

Claims (39)

1. A method comprising:

receiving a wake up signal at a wake up radio from a communication node at a receipt time, wherein the wake up signal indicates a node active time for a plurality of main radios of a plurality of communication devices to begin communicating with the communication node,

wherein each of the plurality of communication devices is configured to:

determine a respective one of each of a plurality of transition times between a respective one of each of a plurality of initiation times and a respective one of each of a plurality of device active times for a respective one of each of the plurality of main radios, wherein the plurality of device active times are during the node active time and at least two transition times of the plurality of transition times are different, wherein the wake up signal comprises an overall delay time from the receipt time to the node active time, wherein the overall delay time is the same for each of the plurality of main radios and indicates a time when each of the plurality of main radios is ready to send uplink data to the communication node, and the overall delay time is greater than or equal to a maximum transition time of the plurality of transition times; and

determine a respective one of each of a plurality of device delay times between the receipt time and each of the plurality of initiation times, such that a sum of the respective one of each of the plurality of device delay times and the respective one of each of the plurality of transition times is equal to the overall delay time, wherein each of the plurality of communication devices is configured to:

initiate the respective one of each of the plurality of main radios at the respective one of each of the plurality of initiation times, respectively, and

communicate with the communication node using the respective one of each of the plurality of main radios during the respective one of each of the plurality of device active times.

2. The method of claim 1 , wherein the node active time is a window of time.

3. The method of claim 1 , wherein the node active time is a point in time.

4. The method of claim 1 , comprising:

extracting an indicator from the wake up signal; and

retrieving the node active time from a data store based on the indicator.

5. The method of claim 1 , wherein the wake up signal comprises the node active time.

6. The method of claim 1 , wherein the first main radio is asleep at the receipt time.

7. The method of claim 1 , wherein the wake up signal comprises the overall delay time.

8. The method of claim 1 , wherein the node active time is a period of time after the receipt time.

9. The method of claim 1 , wherein the receipt time is at an end of the wake up signal.

10. A method comprising:

sending a wake up signal to a wake up radio of a communication device for receipt at a receipt time, wherein the wake up signal indicates a node active time for a plurality of main radios of a plurality of communication devices to begin communicating with the communication node, wherein each of the plurality of communication devices is configured to:

determine a respective one of each of a plurality of transition times between a respective one of each of a plurality of initiation times and a respective one of each of a plurality of device active times for a respective one of each of the plurality of main radios, wherein the plurality of device active times are during the node active time and at least two transition times of the plurality of transition times are different, wherein the wake up signal comprises an overall delay time from the receipt time to the node active time, wherein the overall delay time is the same for each of the plurality of main radios and indicates a time when each of the plurality of main radios is ready to send uplink data to the communication node, and the overall delay time is greater than or equal to a maximum transition time of the plurality of transition times, and

determine a respective one of each of a plurality of device delay times between the receipt time and each of the plurality of initiation times, such that a sum of the respective one of each of the plurality of device delay times and the respective one of each of the plurality of transition times is equal to the overall delay time, wherein each of the plurality of communication devices is configured to:

initiate the respective one of each of the plurality of main radios at the respective one of each of the plurality of initiation times, respectively; and

communicating with each of the plurality of main radios during the node active time.

11. The method of claim 10 , wherein the node active time is a window of time.

12. The method of claim 10 , wherein the node active time is a point in time.

13. The method of claim 10 , wherein the wake up signal configures the communication device to:

extract an indicator from the wake up signal; and

retrieve the node active time from a data store based on the indicator.

14. The method of claim 10 , wherein the wake up signal comprises the node active time.

15. The method of claim 10 , wherein the first main radio is asleep at the receipt time.

16. The method of claim 10 , wherein the wake up signal comprises the overall delay time.

17. A system, comprising:

a plurality of communication devices, wherein the plurality of communication devices comprises a first communication device, wherein the first communication device comprises:

a receiver configured to receive a wake up signal at a wake up radio from a communication node at a receipt time, wherein the wake up signal indicates a node active time for a plurality of main radios of the plurality of communication devices to begin communicating with the communication node, wherein each of the plurality of communication devices comprises at least one processor coupled to a respective one of each of a plurality of receivers, wherein the at least one processor in each of the plurality of communication devices is configured to:

determine a respective one of each of a plurality of transition times between a respective one of each of a plurality of initiation times and a respective one of each of a plurality of device active times for a respective one of each of the plurality of main radios, wherein the plurality of device active times are during the node active time and at least two transition times of the plurality of transition times are different, wherein the wake up signal comprises an overall delay time from the receipt time to the node active time, wherein the overall delay time is the same for each of the plurality of main radios and indicates a time when each of the plurality of main radios is ready to send uplink data to the communication node, and the overall delay time is greater than or equal to a maximum transition time of the plurality of transition times; and

determine a respective one of each of a plurality of device delay times between the receipt time and each of the plurality of initiation times, such that a sum of the respective one of each of the plurality of device delay times and the respective one of each of the plurality of transition times is equal to the overall delay time, wherein each of the plurality of communication devices is configured to:

initiate the respective one of each of the plurality of main radios at the respective one of each of the plurality of initiation times, and

communicate with the communication node using the respective one of each of the plurality of main radios during the respective one of each of the plurality of device active times.

18. The system of claim 17 , wherein the node active time is a window of time.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 26, 2021
From: LV, KAIYING; LI, NAN; SUN, BO
To: ZTE CORPORATION
Reel/Frame 057920/0660 →
Continuity (2)
Continuation PCTCN2018072578 · Jan 15, 2018
Related Publication 20200344688A1 · Oct 29, 2020