Terminal Device Power Saving Signal Pattern Switching

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Solution Overview

Problem

Power saving signal patterns in NB-IoT and eMTC systems increase scheduling time delay, failing to meet requirements for certain services that demand low latency.

Innovation Solution

Implementing a method where an access network device sends a trigger condition to a terminal device to switch between power saving and non-power-saving monitoring modes based on service requirements, allowing the terminal to select appropriate monitoring modes to balance power consumption and latency needs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If power saving signal pattern is used, then power consumption is reduced, but scheduling time delay increases

Engineering Contradiction:

Improvepower consumptionVSAvoidscheduling time delay

Core Design Contradiction:

Use of energy by moving objectVSLoss of time

Solution Approach 1:

The patent implements dynamic switching between power saving monitoring mode and normal monitoring mode based on trigger conditions. The terminal device adjusts its PDCCH monitoring behavior dynamically - using power saving signal pattern when conditions allow, and switching to normal monitoring when low latency is required, thus resolving the contradiction between power consumption and scheduling delay

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the monitoring parameter (PDCCH monitoring frequency and timing) based on different operational states. When trigger conditions are met, the terminal switches from normal PDCCH monitoring to power saving signal pattern monitoring, effectively changing the monitoring parameters to balance power consumption and latency requirements

Inventive Principle:

Principle #35Parameter changes

2Use of energy by moving object

If power saving signal pattern is used, then power consumption is reduced, but service responsiveness deteriorates

Engineering Contradiction:

Improvepower consumptionVSAvoidservice responsiveness

Core Design Contradiction:

Use of energy by moving objectVSProductivity

Solution Approach 1:

The patent employs feedback mechanisms where the network device sends trigger conditions to the terminal device based on service requirements and channel conditions. The terminal device continuously monitors these trigger conditions and adjusts its monitoring mode accordingly, ensuring that service responsiveness is maintained when needed while power consumption is reduced when possible

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system dynamically adapts the monitoring strategy based on real-time conditions. The terminal device transitions between power saving mode and normal monitoring mode based on trigger conditions related to service requirements, ensuring that service responsiveness is maintained when low latency services are active while reducing power consumption during normal operations

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS20240357502A1Methods and apparatuses for using power-saving signal pattern, device and system

Publication Date: 2024.10.24 BEIJING XIAOMI MOBILE SOFTWARE CO LTD

AI summary

A method for using a power saving signal pattern includes. a terminal device obtaining a trigger condition. The trigger condition includes a condition to stop using a power saving signal pattern. The terminal device determines whether the trigger condition is satisfied. The terminal device stops using the power saving signal pattern in response to the trigger condition is satisfied.