Adaptive Discontinuous Reception via Extended Paging Indicator

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional discontinuous reception methods in wideband code division multiple access systems do not efficiently adapt to varying traffic characteristics and terminal power states, leading to suboptimal power saving performance.

Innovation Solution

An extended paging indicator-based adaptive discontinuous reception method that dynamically adjusts the terminal's paging indicator reception period within the discontinuous reception cycle by using additional bit Run types ('01' and '10') to increase or decrease the reception period, allowing for more efficient power management without transitioning to a power active mode.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If conventional fixed discontinuous reception cycle is used, then terminal power consumption is reduced, but transmission time delay and failure probability increase

Engineering Contradiction:

Improveterminal power consumptionVSAvoidtransmission failure possibility

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The patent applies dynamics by making the discontinuous reception cycle adaptive rather than fixed. The base station dynamically adjusts the DRX cycle length based on terminal power state and traffic characteristics, allowing the system to switch between longer cycles (for power saving) and shorter cycles (for reliability) as conditions change. This is implemented through the network controlling the terminal's DRX parameters via RRC signaling.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the parameter of discontinuous reception cycle length adaptively. By modifying the DRX cycle parameter based on terminal power state (power save mode vs. active mode) and traffic conditions, the system optimizes both power consumption and transmission reliability. The base station sends RRC connection reconfiguration messages to adjust these parameters in real-time.

Inventive Principle:

Principle #35Parameter changes

2Use of energy by moving object

If discontinuous reception cycle is extended for power saving, then terminal power consumption decreases, but transmission time delay increases

Engineering Contradiction:

Improveterminal power consumptionVSAvoidtransmission time delay

Core Design Contradiction:

Use of energy by moving objectVSLoss of time

Solution Approach 1:

The system dynamically adjusts the DRX cycle length based on current conditions. When power saving is prioritized, longer cycles are used; when low latency is needed, shorter cycles are applied. This dynamic adaptation allows the system to balance power consumption and transmission delay according to real-time requirements.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the DRX cycle parameter adaptively to balance power saving and latency. By adjusting this key parameter based on terminal power state and traffic characteristics, the system can extend the cycle for power saving when appropriate, and shorten it when low latency is required, thus managing the trade-off between these two parameters.

Inventive Principle:

Principle #35Parameter changes

3Device complexity

If fixed discontinuous reception cycle is applied to all terminals, then base station load is reduced, but power saving performance is suboptimal

Engineering Contradiction:

Improvebase station loadVSAvoidpower saving performance

Core Design Contradiction:

Device complexityVSUse of energy by moving object

Solution Approach 1:

The patent applies local quality by customizing the discontinuous reception cycle for each terminal based on its specific power state and traffic characteristics rather than using a uniform cycle for all terminals. This allows each terminal to have optimized power saving performance tailored to its local conditions, while the base station manages these individual configurations through RRC signaling.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS8050208B2Method for adaptive discontinuous reception based on extented paging indicator for improvement of power effective performance at mobile terminal on WCDMA

Publication Date: 2011.11.01 ELECTRONICS & TELECOMM RES INST

AI summary

An extended paging indicator-based adaptive discontinuous reception method is proposed so as to improve a power saving performance of a terminal in an asynchronous wideband code division multiple access schemes. To this end, a plurality of terminals for performing power saving receive an extended paging indicator for a discontinuous reception cycle, conform a type of a bit Run for configuring the extended paging indicator, and change the discontinuous reception period. In addition, the terminals set the discontinuous reception period update factor value to be varied according to the extended paging indicator as an initial value so as to determine a next paging occasion block, change the discontinuous reception period update factor value according to the paging indicator of the bit Run received from base station, and change the discontinuous reception period according to the variance of the discontinuous reception period update factor value. The extended paging indicator-based adaptive discontinuous reception method may improve transmission time delay and transmission failure probability performances for packet reception as well as a power saving performance in comparison with a conventional fixed discontinuous reception method.