Sidelink Resource Configuration for Power Saving

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Solution Overview

Problem

Existing wireless communication systems face challenges in efficiently managing power consumption for sidelink communication resources and control resources, particularly in scenarios like vehicular networks where communication requirements are stringent and unpredictable.

Innovation Solution

The proposed solution involves methods and systems for configuring and provisioning wireless communication resources to enable power-saving in sidelink communication. This includes determining wireless resource configurations for sidelink control information transmission and reception, and using sidelink wakeup control resources to indicate when UEs should monitor specific wireless resources, thereby reducing unnecessary power consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If user equipments continuously monitor all wireless resources for sidelink communication, then communication reliability is improved, but power consumption increases

Engineering Contradiction:

Improvecommunication reliabilityVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The wireless resources are segmented into different types: first wireless resources for transmitting sidelink control information and second wireless resources for transmitting sidelink data. The monitoring mechanism is further segmented by introducing designated resource periods where UEs only need to monitor for wake-up signals rather than continuously monitoring all resources. This segmentation allows UEs to maintain communication reliability by receiving control information while reducing power consumption by monitoring only specific resource periods.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Sidelink control information is transmitted in advance on first wireless resources before the actual data transmission on second wireless resources. This preliminary action includes wake-up signals that prepare the receiving UE ahead of time, allowing it to wake up only when needed and monitor only the designated resource periods, thus reducing power consumption while maintaining reliability.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If user equipments monitor all wireless resources continuously, then data transmission reliability is improved, but battery life decreases

Engineering Contradiction:

Improvedata transmission reliabilityVSAvoidbattery life

Core Design Contradiction:

ReliabilityVSDuration of action of stationary object

Solution Approach 1:

The monitoring mechanism operates periodically rather than continuously. UEs are configured with designated resource periods within the sidelink resource period when they need to monitor for wake-up signals. Between these periods, UEs can enter low-power sleep mode. This periodic monitoring ensures data transmission reliability by maintaining awareness of upcoming transmissions while extending battery life by keeping the UE in low-power state during non-monitoring periods.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The continuous monitoring function is extracted and replaced with selective monitoring. Instead of monitoring all wireless resources continuously, UEs only monitor designated resource periods for wake-up signals. The control information about which periods require monitoring is extracted and transmitted separately on first wireless resources, allowing the receiving UE to intelligently select when to wake up and monitor, thus extending battery life while maintaining data transmission reliability.

Inventive Principle:

Principle #2Taking out (Extraction)

3Productivity

If wireless resources are allocated without power-saving configuration, then communication efficiency is improved, but power consumption increases

Engineering Contradiction:

Improvecommunication efficiencyVSAvoidpower consumption

Core Design Contradiction:

ProductivityVSLoss of energy

Solution Approach 1:

The resource allocation system introduces dynamic power-saving configuration where the receiving UE can be configured with different monitoring behaviors based on the transmission schedule. The system dynamically adjusts which resource periods the receiving UE needs to monitor by transmitting wake-up signals on first wireless resources. This dynamic approach maintains communication efficiency by ensuring the receiving UE is awake and ready when data needs to be transmitted while reducing power consumption by keeping it in sleep mode during non-critical periods.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS12289684B2Method and device for power-saving in wireless sidelink communication

Publication Date: 2025.04.29 ZTE CORP

AI summary

This disclosure relates to methods and devices for wireless communication resource configuration. Various schemes of configuration of sidelink control resources and/or sidelink data communication resources enable reduction of time duration that a user equipment is required to monitor sidelink communication resources for sidelink data, thereby providing power saving in sidelink communication.