Discontinuous Reception On-Duration Switching

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Solution Overview

Problem

Current discontinuous reception (DRX) techniques in mobile communication systems require re-configuration of DRX parameters through complex RRC signaling, leading to increased signaling overhead and system complexity when changing on-duration time lengths.

Innovation Solution

Configuring multiple on-duration time lengths for terminals, allowing them to switch between these lengths based on predefined conditions without relying on RRC signaling re-configuration, thereby reducing system complexity and power consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the base station sends RRC signaling to re-configure DRX parameters during DRX procedure, then the DRX parameters can be changed, but additional RRC signaling overhead increases and system complexity increases

Engineering Contradiction:

ImproveDRX parameter changeabilityVSAvoidsystem complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The base station pre-configures multiple on-duration time lengths for the terminal before DRX operation begins. These multiple time length options are prepared in advance, allowing the terminal to switch between them during DRX procedure without requiring additional RRC re-configuration signaling, thus reducing system complexity while maintaining adaptability

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The terminal dynamically switches between multiple pre-configured on-duration time lengths based on actual DRX operation needs. This dynamic switching capability allows the system to adapt DRX parameters during operation without complex re-configuration procedures, resolving the contradiction between adaptability and system complexity

Inventive Principle:

Principle #15Dynamics

2Reliability

If the terminal monitors PDCCH channel all the time to determine base station resource allocation, then resource allocation can be detected, but power consumption of the terminal increases seriously

Engineering Contradiction:

Improveresource allocation detectionVSAvoidterminal power consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The terminal adopts discontinuous reception by monitoring PDCCH channel periodically according to DRX cycles with configured on-duration time lengths, rather than monitoring continuously. This periodic monitoring ensures resource allocation is detected during active periods while allowing the terminal to sleep during inactive periods, significantly reducing power consumption while maintaining reliable detection

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The terminal changes its monitoring behavior parameter from continuous monitoring to periodic monitoring based on DRX configuration. By adjusting the monitoring pattern parameter (from always-on to periodic with specific on-duration lengths), the system achieves both reliable resource allocation detection and reduced power consumption

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS9516590B2Method, device and system for discontinuous reception

Publication Date: 2016.12.06 HUAWEI TECH CO LTD

AI summary

A method and a device for discontinuous reception is disclosed. The method includes: configuring at least two on-duration time lengths of a discontinuous reception; performing the discontinuous reception according to a first on-duration time length in the at least two on-duration time lengths; switching the first on-duration time length of the discontinuous reception to a second on-duration time length according to the configured at least two on-duration time lengths when a set condition is satisfied; and performing the discontinuous reception according to the second on-duration time length.