Adaptive Receive Diversity Thresholds for Downlink Power Control

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Wireless communication devices face increased power consumption due to prolonged operation in ARD standby mode without receiving downlink scheduling, despite maintaining the same throughput, caused by static threshold-based transitions between ARD modes.

Innovation Solution

Adaptive adjustment of downlink burst thresholds based on downlink scheduling rates and patterns, allowing dynamic transitions between ARD disallowed and standby modes to reduce power consumption while maintaining throughput.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the UE transitions to ARD standby mode based on a static downlink burst threshold, then the UE can handle high downlink scheduling rates, but the UE experiences increased power consumption during periodic bursts without intermediate transmissions

Engineering Contradiction:

Improvedownlink scheduling rate handlingVSAvoidpower consumption

Core Design Contradiction:

ProductivityVSUse of energy by moving object

Solution Approach 1:

The patent applies dynamics by transitioning from a static downlink burst threshold to a dynamic threshold that adapts based on monitored downlink scheduling rates. The threshold is adjusted incrementally when scheduling rates fall below a threshold during ARD standby mode, allowing the system to respond to changing traffic patterns and avoid unnecessary antenna activation, thereby reducing power consumption while maintaining productivity.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the parameter of the downlink burst threshold from a fixed value to a variable that changes based on monitored scheduling rates. When the scheduling rate remains below a threshold during ARD standby mode, the burst threshold is incremented, making it harder to trigger ARD standby mode again. This parameter adaptation directly addresses the power consumption issue by preventing prolonged unnecessary antenna operation.

Inventive Principle:

Principle #35Parameter changes

2Device complexity

If the UE uses a static downlink burst threshold for ARD mode transitions, then the transition criteria are simple to implement, but the UE cannot adapt to varying downlink scheduling patterns

Engineering Contradiction:

Improvetransition criteria complexityVSAvoidadaptation to scheduling patterns

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The system introduces dynamic adaptation by continuously monitoring downlink scheduling rates and adjusting the burst threshold accordingly. This allows the UE to adapt to varying scheduling patterns while maintaining relatively simple transition criteria based on comparing the current burst count against the dynamically adjusted threshold.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent implements feedback by monitoring the downlink scheduling rate during ARD standby mode and using this information to adjust the burst threshold. When scheduling rates are consistently low, the threshold is incremented, creating a feedback loop that adapts the system behavior to actual traffic patterns, thereby improving adaptability without significantly increasing complexity.

Inventive Principle:

Principle #23Feedback

3Reliability

If the UE remains in ARD standby mode for extended periods, then the UE maintains readiness for high throughput, but the UE increases power consumption without receiving downlink scheduling

Engineering Contradiction:

Improvedownlink throughput consistencyVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent applies dynamics by making the ARD standby mode duration adaptive rather than fixed. The system monitors scheduling rates during standby mode and dynamically adjusts the burst threshold, which effectively controls how long the UE remains in standby mode. This prevents extended periods of unnecessary antenna activation while maintaining throughput consistency when actual scheduling occurs.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system uses self-service by having the UE autonomously monitor its own downlink scheduling rate and automatically adjust its ARD mode transitions based on this self-measured information. This self-regulation allows the UE to optimize its own power consumption while maintaining reliable throughput performance without external intervention.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS12363708B2Adaptive advanced receivers based on downlink grant pattern detection

Publication Date: 2025.07.15 QUALCOMM INC

AI summary

Methods, systems, and devices for wireless communications are described. Generally, the described techniques provide for a user equipment (UE) to adaptively transition between modes of an adaptive receive diversity (ARD) antenna management configuration. In some cases, the UE may determine to transition from an ARD disallowed mode to an ARD standby mode in response to receiving a burst of downlink grants. The UE may dynamically update one or more criterion for transitioning between the ARD disallowed mode and the ARD standby mode according to a pattern of received downlink grants. For example, the UE may adjust a threshold quantity of downlink grants which constitutes a burst based on a downlink scheduling rate (DSR) of one or more prior ARD standby durations. In some cases, the UE may identify a fallback condition to transition from the ARD standby mode to the ARD disallowed mode.