Early Acknowledgement for Wireless Data Delivery

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Solution Overview

Problem

In wireless communication networks, IoT devices face energy inefficiencies due to repeated transmissions and delays in acknowledging data delivery, leading to increased energy consumption and potential data transfer failures.

Innovation Solution

Implementing an early acknowledgement message system where a network node takes over data delivery and retransmission responsibilities, allowing wireless devices to enter energy-saving modes and reducing continuous channel monitoring.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the wireless device continuously monitors the radio channel for acknowledgement messages, then data delivery reliability is improved, but energy consumption increases

Engineering Contradiction:

Improvedata delivery reliabilityVSAvoidenergy consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The network node sends an early acknowledgement message before the wireless device would normally expect confirmation, allowing the device to stop monitoring the channel earlier and enter energy-saving mode while still ensuring reliable data delivery

Inventive Principle:

Principle #10Preliminary action

2Reliability

If repeated transmissions are used to increase probability of successful data transfer, then data delivery reliability is improved, but energy consumption increases

Engineering Contradiction:

Improvedata transfer success probabilityVSAvoidenergy consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The network node acts as an intermediary that takes over the retransmission responsibility from the wireless device, allowing the device to enter energy-saving mode while the network node handles data retransmission if needed

Inventive Principle:

Principle #24Intermediary (Mediator)

3Use of energy by moving object

If the wireless device enters energy-saving mode to reduce energy consumption, then energy efficiency is improved, but data delivery reliability may deteriorate

Engineering Contradiction:

Improveenergy efficiencyVSAvoiddata delivery reliability

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The network node provides early acknowledgement before the device enters energy-saving mode, and maintains data buffering and retransmission capability throughout the device's sleep period, ensuring reliable delivery without requiring continuous device monitoring

Inventive Principle:

Principle #10Preliminary action

4Reliability

If continuous channel monitoring is performed to detect acknowledgement messages, then data delivery reliability is improved, but device complexity increases

Engineering Contradiction:

Improveacknowledgement detection reliabilityVSAvoidmonitoring mechanism complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The early acknowledgement message is sent in advance, allowing the device to stop monitoring earlier and simplify its monitoring mechanism while still ensuring reliable acknowledgement detection

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS20250024373A1Early acknowledgement for data transmitted from wireless device

Publication Date: 2025.01.16 TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

AI summary

A node of a wireless communication network receives a transmission of data from a wireless device. Further, the node sends an early acknowledgement message to the wireless device. The early acknowledgement message indicates that the node will handle delivery of the data to a destination device on behalf of the wireless device.