Poll Message Triggering Passive UE Network Registration

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing wireless communication systems face challenges in efficiently managing and controlling passive User Equipment (UEs) that operate under extreme energy and power constraints, particularly in scenarios where these devices can only transmit in response to received radio-frequency energy, leading to inadequate network registration and management.

Innovation Solution

A method is introduced where a wireless network transmits a poll message to trigger UE registration, determining a valid network subscription, and assigning a temporary ID, allowing for improved network control and registration of UEs that predominantly or only transmit in the uplink based on downlink reception, utilizing energy harvesting for communication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If passive UEs transmit only in response to DL reception, then energy consumption is reduced, but network control and registration management become inadequate

Engineering Contradiction:

Improveenergy consumptionVSAvoidnetwork control

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The network performs preliminary actions by transmitting poll messages and determining subscriptions before the UE needs to communicate. This allows the network to pre-establish control and registration information, ensuring reliability is maintained even though the UE transmits minimally to conserve energy.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system implements feedback mechanisms where the network sends poll messages and receives responses from UEs. This feedback loop enables the network to maintain control over passive UEs by periodically checking their status and updating registration information without requiring continuous UE transmission.

Inventive Principle:

Principle #23Feedback

2Use of energy by moving object

If passive UEs operate without battery, then energy constraints are minimized, but device complexity for energy harvesting increases

Engineering Contradiction:

Improveenergy constraintsVSAvoiddevice complexity

Core Design Contradiction:

Use of energy by moving objectVSDevice complexity

Solution Approach 1:

Passive UEs utilize self-service by harvesting energy from the environment (RF energy harvesting) rather than requiring external battery replacement. The devices automatically capture and convert ambient radio-frequency energy into usable power, eliminating the need for batteries while maintaining operational capability.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The passive UE design incorporates multi-functionality by combining energy harvesting, backscatter communication, and sensing capabilities in a single device. This universal approach allows the same hardware to perform multiple functions, reducing overall device complexity despite the addition of energy harvesting components.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Reliability

If network polls UEs for registration, then network control is improved, but system overhead increases

Engineering Contradiction:

Improvenetwork controlVSAvoidsystem overhead

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The network employs periodic polling rather than continuous communication with passive UEs. Poll messages are transmitted at predetermined intervals to maintain registration and control, reducing system overhead while ensuring the network remains aware of UE status and location.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The system uses partial action by transmitting only essential poll messages for registration purposes rather than full communication sequences. This minimizes the amount of data transmitted while still achieving the necessary network control and UE identification.

Inventive Principle:

Principle #16Partial or excessive action

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This solution enhances network control over UEs with severe energy constraints, enabling efficient registration and management, reducing system overhead, and optimizing energy usage by leveraging energy harvesting for communication.

Implementation Method 1

configured to transmit responsive to receiving radio-frequency energy

Methodology Applied

Scientific EffectEnergy harvesting: Electromagnetic Induction

Data Source

PatentUS20250016714A1Methods and devices for triggering network registration of user equipment

Publication Date: 2025.01.09 SONY GROUP CORP

AI summary

A method carried out in a wireless network (100) for registering a User Equipment (10), UE, to the wireless network, the method comprising: transmitting (415) a poll message (41) configured to trigger the UE to register, said poll message comprising an ID of the wireless network; determining (445), responsive to receiving (435) a registration request message from the UE in response to the poll message, a network subscription based on a subscription ID obtained in the response message; transmitting (455), responsive to the determining identifying a valid network subscription, a registration accept message (43) and a temporary ID assigned to the UE.