Network-Triggered Terminal Discovery for Lower Energy Consumption

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Solution Overview

Problem

Current discovery processes between devices with a subscription binding relationship are blind and inefficient, leading to increased energy consumption as devices continuously broadcast discovery messages.

Innovation Solution

A trigger discovery method where a first terminal sends a wake-up discovery request to a network device, which then sends a discovery start command to a second terminal with a subscription binding relationship, allowing the second terminal to start the discovery process only when triggered.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If devices continuously broadcast discovery messages to initiate discovery process, then discovery reliability is improved, but energy consumption increases

Engineering Contradiction:

Improvediscovery reliabilityVSAvoidenergy consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The network device performs preliminary actions by maintaining subscription binding relationships and readiness to send discovery start commands, allowing terminals to initiate discovery without continuous broadcasting while ensuring reliable discovery initiation when needed

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The network device acts as an intermediary that receives wake-up discovery requests from terminals and sends discovery start commands to target terminals, eliminating the need for continuous discovery message broadcasting while ensuring reliable discovery initiation

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If devices perform blind discovery processes, then discovery completeness is improved, but time consumption increases

Engineering Contradiction:

Improvediscovery completenessVSAvoidtime consumption

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The network device pre-establishes subscription binding relationships between terminals, enabling targeted discovery initiation without blind broadcasting. This ensures discovery completeness by maintaining knowledge of all potential discovery targets while eliminating time-wasting blind transmission attempts

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

Instead of terminals continuously broadcasting discovery messages to find each other, the system inverts the approach by having the network device send targeted discovery start commands to specific terminals based on wake-up requests, ensuring complete and efficient discovery

Inventive Principle:

Principle #13The other way round (Inversion)

3Speed

If terminals continuously monitor for discovery messages, then discovery responsiveness is improved, but energy consumption increases

Engineering Contradiction:

Improvediscovery responsivenessVSAvoidenergy consumption

Core Design Contradiction:

SpeedVSUse of energy by moving object

Solution Approach 1:

The system uses periodic wake-up discovery requests sent by terminals to the network device, which then triggers periodic discovery start commands to target terminals. This replaces continuous monitoring with periodic, event-driven discovery initiation, maintaining responsiveness while reducing energy consumption

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The network device serves as an intermediary that receives wake-up requests and triggers discovery processes, allowing terminals to enter low-power states without monitoring continuously while maintaining fast discovery responsiveness through the network-mediated trigger mechanism

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS12349072B2Method for triggering terminal to start discovery process via network device, terminal device, and network device

Publication Date: 2025.07.01 VIVO MOBILE COMM CO LTD

AI summary

A trigger discovery method includes: sending a wake-up discovery request to a network device, where the wake-up discovery request is used for requesting the network device to trigger a second terminal to start a discovery process, and there is a subscription binding relationship between the second terminal and the first terminal; and starting the discovery process in a case that a response message sent by the network device is received, where the response message is used for indicating that the second terminal has started the discovery process.