Low-power modes for vulnerable road user equipment

Patent metadata

Field	Value
Publication number	US-12587965-B2
Application number	US-202318199036-A
Country	US
Kind code	B2
Filing date	May 18, 2023
Priority date	May 20, 2022
Publication date	Mar 24, 2026
Grant date	Mar 24, 2026

Abstract

The present disclosure provides technologies and techniques for power optimization of vulnerable road user (VRU) devices in Intelligent Transportation Systems (ITS)/Vehicle-to-Everything (V2X) systems/networks, Internet of Things (IoT) devices, and/or other small form-factor devices. The power optimizations involve disabling or placing the communications functionality of a device in a sleep or inactive mode in situations where such functionality is not needed. The power optimization techniques include medium access control (MAC) optimized discontinuous reception (DRX) configurations, location-based communication, wake-up signaling communication, contextual activation and parameterization of device communication, slot reservation communication. Additional aspects of devices and communication configurations and arrangements may be described.

First claim

The invention claimed is:

1 . A mobile station, comprising:
communication circuitry, wherein the communication circuitry is to:
receive a zone configuration, wherein the zone configuration includes a set of geographic areas at which the mobile station is to activate or deactivate the communication circuitry, wherein to activate the communication circuitry includes to enter an active state, and wherein to deactivate the communication circuitry includes to enter a sleep state; and
adjust a subset of DRX parameters of the set of DRX parameters based on the geographic areas included in the zone configuration; and
processor circuitry connected to the communication circuitry, wherein the processor circuitry is to:
cause the communication circuitry to enter the active state when a set of first conditions are met; and
cause the communication circuitry to enter the sleep state when a set of second conditions are met, wherein the set of first conditions are different than the set of second conditions.

2 . The mobile station of claim 1 , wherein the processor circuitry is to:
cause the communication circuitry to enter the active state by enabling or switching on the communication circuitry; and cause the communication circuitry to enter the sleep state by disabling or switching off the communication circuitry.

3 . The mobile station of claim 1 , wherein the communication circuitry is to:
receive a discontinuous reception (DRX) configuration, wherein the DRX configuration is based on one or more of a type of messages being communicated in a geographical area, a message traffic volume in the geographical area, channel conditions in the geographical area, signal strength measurements, or signal quality measurements.

4 . The mobile station of claim 3 , wherein the set of second conditions includes expiration of a DRX timer, and the processor circuitry is to:
start the DRX timer when no messages are obtained within a predefined or configured period of time; and cause the communication circuitry to enter the sleep state when the DRX timer expires.

5 . The mobile station of claim 3 , wherein the DRX configuration includes a set of DRX parameters, and the set of DRX parameters include one or more of:
a DRX-onDuration parameter, wherein the DRX-onDuration parameter includes one or more of a duration of a DRX cycle or a time interval during which periodic messages are scheduled or transmitted; a DRX-ShortCycle parameter, wherein the DRX-ShortCycle parameter includes a duration of a short DRX cycle or a time duration corresponding to a message periodicity; a DRX-ShortCycle Timer parameter, wherein the DRX-ShortCycle Timer parameter includes one or more of: a duration following the short DRX cycle, a number of short DRX cycles to follow after a start of an individual short DRX cycle, or a number of short DRX cycles after which a long DRX cycle is to be applied; and a DRX-LongCycle parameter, wherein the DRX-LongCycle parameter includes a duration of a long DRX cycle or a number of short DRX cycles making up the long DRX cycle.

6 . The mobile station of claim 5 , wherein the processor circuitry is to:
cause the communication circuitry to enter the long DRX cycle when there is no transmission or receipt of messages during a period defined by the DRX-ShortCycle or the DRX-ShortCycle Timer.

7 . The mobile station of claim 5 , wherein, to adjust the set of DRX parameters, the processor circuitry is to:
determine a current location of the mobile station based on map data provided by positioning circuitry or a navigation application; and adjust the set of DRX parameters based on the current location.

8 . The mobile station of claim 5 , wherein, to adjust the set of DRX parameters, the processor circuitry is to:
increase a value of the DRX-ShortCycle parameter or a value of the DRX-LongCycle parameter for zones that are not within a predefined distance of road infrastructure; and decrease the value of the DRX-ShortCycle parameter or the value of the DRX-LongCycle parameter for zones that are within the predefined distance of road infrastructure.

9 . The mobile station of claim 5 , wherein, to adjust the set of DRX parameters, the processor circuitry is to:
decrease a value of the DRX-ShortCycle Timer parameter for zones that are not within a predefined distance of road infrastructure; and increase the value of the DRX-ShortCycle Timer parameter for zones that are within a predefined distance of road infrastructure.

10 . The mobile station of claim 1 , wherein the processor circuitry is to:
receiving a wake-up signal (WUS) from a beacon device, wherein the WUS is transmitted prior to each scheduled transmission occasion; entering the active state in response to receipt of the WUS; receiving a Go-To-Sleep (GTS) signal from the beacon device when there are no messages to be transmitted in a configured transmission occasion; and entering the sleep state in response to receipt of the GTS signal.

11 . The mobile station of claim 1 , wherein the mobile station is a vulnerable road user (VRU) device, a smartphone, a tablet, a wearable device, an autonomous sensor, an Internet of Things (IOT) device, a single-board computer, a micro-mobility vehicle, a four-wheeled all-terrain vehicle, a Global Positioning System (GPS) module, a radiofrequency identifier (RFID) tag, a head-up display (HUD) device, or a small form factor computing device.

12 . A non-transitory computer readable media (NTCRM) comprising instructions for operating a mobile station, wherein execution of the instructions is to cause the mobile station to:
receive a zone configuration, wherein the zone configuration includes a set of geographic areas at which the mobile station is to activate or deactivate communication circuitry of the mobile station, wherein to activate the communication circuitry includes to enter an active state, and wherein to deactivate the communication circuitry includes to enter a sleep state; adjust a subset of DRX parameters of the set of DRX parameters based on the geographic areas included in the zone configuration; determine a current position of the mobile station; cause the communication circuitry of the mobile station to enter the active state when a set of first conditions are met; and cause the communication circuitry to enter the sleep state when a set of second conditions are met, wherein the set of first conditions and the set of second conditions are evaluated based on a comparison of the current position of the mobile station to the set of geographic areas at which the mobile station is to activate or deactivate the communication circuitry.

13 . The NTCRM of claim 12 , wherein the set of first conditions include the mobile station being within a predefined distance of one or more vehicles, roadway infrastructure, or a roadside unit (RSU), and execution of the instructions is to cause the mobile station to:
determine the current position of the mobile station with respect to one or more vehicles, roadway infrastructure, or an RSU; cause the communication circuitry to enter the active state when the current position of the mobile station indicates that the mobile station is within the predefined distance of the one or more vehicles, the roadway infrastructure, or the RSU; and cause the communication circuitry to enter the sleep state when the current position of the mobile station indicates that the mobile station is not within the predefined distance of the one or more vehicles, the roadway infrastructure, or the RSU.

14 . The NTCRM of claim 12 , wherein the set of first conditions include the mobil

Assignees

• Intel Corp

Inventors

• Mueck Markus Dominik
• Miao Honglei
• Faerber Michael

Classifications

• H04W72/0446

  Resources in time domain, e.g. slots or frames · CPC title

• H04W52/0238 Primary

  where the received signal is an unwanted signal, e.g. interference or idle signal · CPC title

• H04W76/28

  Discontinuous transmission [DTX]; Discontinuous reception [DRX] · CPC title

• H04L5/0073

  Allocation arrangements that take into account other cell interferences · CPC title

• H04L5/0005

  Time-frequency · CPC title