EH-Aware SIB Scheduling for Low-Power System Information Acquisition

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Solution Overview

Problem

Existing wireless communication systems do not effectively support energy harvesting (EH) capabilities in user equipment (UE) and network nodes, leading to inefficiencies in energy management and system information acquisition.

Innovation Solution

Implementing a method for UE and network nodes to exchange System Information Blocks (SIBs) that indicate and adapt to EH capability classes, enabling tailored SIB characteristics based on energy harvesting capabilities.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If system information is transmitted using traditional methods without considering EH capabilities, then all UEs can acquire system information, but energy harvesting UEs consume excessive power and acquisition efficiency is low

Engineering Contradiction:

Improvesystem information acquisition efficiencyVSAvoidpower consumption of EH UE

Core Design Contradiction:

ProductivityVSUse of energy by moving object

Solution Approach 1:

The patent applies local quality by transmitting different system information blocks (SIBs) with different characteristics to different EH capability classes. Network nodes identify UE EH capabilities and send tailored SIBs - for example, UEs in EH capability class 1 receive SIBs with longer periodicity and fewer repetitions, while UEs in class 2 receive SIBs with shorter periodicity and more repetitions, optimizing energy consumption for each group

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent changes key parameters of system information transmission including periodicity, number of repetitions, and time-frequency resource allocation based on EH capability classes. By adjusting these parameters dynamically according to UE energy harvesting capabilities, the system optimizes both acquisition efficiency and power consumption

Inventive Principle:

Principle #35Parameter changes

2Reliability

If system information is transmitted with high periodicity and many repetitions to ensure reliable reception, then EH UEs can acquire information, but network energy consumption and resource usage increase

Engineering Contradiction:

Improvesystem information acquisition reliabilityVSAvoidnetwork energy consumption

Core Design Contradiction:

ReliabilityVSUse of energy by stationary object

Solution Approach 1:

The patent implements local quality by applying different transmission reliability measures to different EH capability classes. Network nodes send SIBs with higher periodicity and more repetitions specifically to UEs with poorer EH capabilities (class 2), while UEs with better EH capabilities (class 1) receive SIBs with lower periodicity and fewer repetitions, thus achieving reliable acquisition only where needed

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent applies partial action by providing enhanced transmission resources (higher periodicity, more repetitions) only partially - specifically to EH UEs that require them based on their capability class, rather than applying excessive transmission resources to all UEs unconditionally

Inventive Principle:

Principle #16Partial or excessive action

3Device complexity

If uniform system information transmission is used for all UEs, then implementation is simple, but it does not optimize for energy harvesting capabilities

Engineering Contradiction:

Improvesystem implementation complexityVSAvoidenergy efficiency

Core Design Contradiction:

Device complexityVSProductivity

Solution Approach 1:

The patent segments UEs into different EH capability classes (e.g., class 1 and class 2) based on their energy harvesting characteristics. This segmentation enables the network to apply different SIB transmission strategies to different groups, optimizing energy efficiency without requiring complex individualized treatment for each UE

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent creates a universal framework for EH-aware system information transmission that can be applied across all EH UEs through capability classification. The same set of EH capability classes and corresponding SIB transmission rules applies universally to all UEs in each class, providing energy efficiency optimization through a standardized multi-functional approach

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20260032425A1System information acquisition by energy harvesting devices

Publication Date: 2026.01.29 QUALCOMM INC

AI summary

Various aspects of the present disclosure generally relate to wireless communication. In some aspects. a user equipment (UE) may receive. from a network node. a first system information block (SIB) that indicates an energy harvesting capability class supported by the network node. The UE may receive. from the network node and based at least in part on receiving the first SIB and the UE being associated with the energy harvesting capability class. a second SIB having one or more SIB characteristics that are based at least in part on the energy harvesting capability class. Numerous other aspects are described.