Dynamic Wake Up Signaling Parameter Adjustment for Carrier Aggregation

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Solution Overview

Problem

In carrier aggregation scenarios, existing technologies lack a reasonable solution for optimizing the monitoring intensity of the Physical Downlink Control Channel (PDCCH) using wake up signaling, leading to inefficient power usage due to opportunistic scheduling and unnecessary detection during most activation periods.

Innovation Solution

A method and apparatus for dynamically changing the pattern parameter of wake up signaling based on the state of the carrier, allowing the user equipment (UE) to adjust its monitoring intensity by determining the number of DRX cycles mapped to a wake up signaling, thereby optimizing PDCCH monitoring.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the terminal monitors PDCCH during every activation period to ensure data scheduling is detected, then the reliability of data reception is improved, but the power consumption increases due to unnecessary detections during most activation periods

Engineering Contradiction:

Improvedata scheduling detection reliabilityVSAvoidterminal power consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The base station sends wake-up signaling before the activation period to preliminarily indicate whether data scheduling will occur. The terminal uses this advance information to decide whether to activate PDCCH monitoring, avoiding unnecessary power consumption while ensuring data is not missed.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

Wake-up signaling acts as an intermediary between the base station and terminal. It carries scheduling indication information that mediates the terminal's decision on whether to perform PDCCH monitoring, resolving the conflict between reliable detection and power saving.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Use of energy by moving object

If the terminal skips PDCCH monitoring to save power, then the power consumption is reduced, but the data scheduling detection reliability deteriorates

Engineering Contradiction:

Improveterminal power consumptionVSAvoiddata scheduling detection reliability

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The base station performs preliminary action by sending wake-up signaling in advance to indicate data scheduling status. This allows the terminal to confidently skip monitoring when no data is scheduled without risking missed detections.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The wake-up signaling provides feedback from the base station to the terminal about upcoming data scheduling. This feedback mechanism enables the terminal to make informed decisions about PDCCH monitoring, maintaining reliability while saving power.

Inventive Principle:

Principle #23Feedback

3Productivity

If the wake-up signaling is sent frequently to improve scheduling response, then the data transmission efficiency is improved, but the base station power consumption and signaling overhead increase

Engineering Contradiction:

Improvedata transmission efficiencyVSAvoidbase station energy consumption

Core Design Contradiction:

ProductivityVSLoss of energy

Solution Approach 1:

Instead of continuous or frequent wake-up signaling, the system uses periodic signaling aligned with DRX cycles. Wake-up signals are sent only when needed at specific intervals, improving data transmission efficiency while minimizing base station energy consumption and signaling overhead.

Inventive Principle:

Principle #19Periodic action

4Productivity

If the terminal monitors multiple carriers simultaneously in carrier aggregation, then the data transmission capacity is improved, but the power consumption increases due to increased monitoring intensity

Engineering Contradiction:

Improvedata transmission capacityVSAvoidterminal power consumption

Core Design Contradiction:

ProductivityVSUse of energy by moving object

Solution Approach 1:

The terminal segments its monitoring behavior by carrier, using wake-up signaling to indicate which specific carriers require PDCCH monitoring. Instead of monitoring all carriers simultaneously, the terminal focuses only on carriers with scheduled data, maintaining high data transmission capacity while reducing power consumption.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different monitoring intensities are applied to different carriers based on local needs. The wake-up signaling provides carrier-specific scheduling information, allowing the terminal to apply high monitoring intensity only to carriers that actually have data scheduled, rather than uniformly monitoring all carriers.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS12127124B2Method for dynamically changing parameter of wake up signaling, terminal, and medium

Publication Date: 2024.10.22 BEIJING XIAOMI MOBILE SOFTWARE CO LTD

AI summary

A method for dynamically changing a parameter of a power saving signal is provided. The method is applied to a user equipment in a carrier aggregation and includes: determining a state of a carrier; and changing a pattern parameter of a wake up signaling according to the state of the carrier.