Wireless Terminal Power-Save Optimization via Packet Arrival Feedback

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Solution Overview

Problem

In wireless networks, terminal devices operating in power-save mode lack visibility into packet arrival times at access nodes, making it difficult to determine optimal power-save parameters, which can lead to increased buffering delays and reduced efficiency.

Innovation Solution

A method is introduced where terminal devices request and receive packet arrival measurement reports from access nodes, allowing them to determine power-save parameters that align with packet arrival patterns, thereby reducing buffering delays and improving power management.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If terminal devices operate in power-save mode without packet arrival visibility, then power consumption is reduced, but buffering delays increase and efficiency decreases

Engineering Contradiction:

Improvepower consumptionVSAvoidbuffering delays

Core Design Contradiction:

Use of energy by moving objectVSLoss of time

Solution Approach 1:

The access node measures packet arrival times and sends measurement reports to the terminal device, providing feedback information about actual packet arrival patterns. This enables the terminal device to adjust its power-save parameters (such as wake-up intervals and sleep durations) based on real network traffic conditions, optimizing the balance between power consumption and buffering delays

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The terminal device uses the packet arrival measurement reports to proactively determine optimal power-save parameters before entering power-save mode. By calculating appropriate wake-up intervals and sleep durations in advance based on predicted packet arrival patterns, the device can minimize buffering delays while maximizing power savings

Inventive Principle:

Principle #10Preliminary action

2Device complexity

If terminal devices lack packet arrival information, then device complexity is reduced, but determination of optimal power-save parameters becomes difficult

Engineering Contradiction:

Improvedevice complexityVSAvoidpower-save parameter optimization

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The access node acts as an intermediary that performs the complex measurement and analysis functions. It measures packet arrival times, generates measurement reports, and provides this information to the terminal device. This allows the terminal device to optimize its power-save parameters without having to implement complex measurement and analysis capabilities itself

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS9531606B2Packet measurements and reporting in wireless network

Publication Date: 2016.12.27 NOKIA TECHNOLOGIES OY

AI summary

This document discloses methods, apparatuses, and computer programs for carrying out packet arrival measurements and reporting the measurement results. A first wireless apparatus transmits a packet arrival measurement request to a second wireless apparatus. The first wireless apparatus then receives a packet arrival measurement report from the second wireless apparatus, wherein the packet arrival measurement report comprises information on arrival of at least one data packet addressed to the first wireless apparatus at the second wireless apparatus.