MAC Delay Status Reporting With Dynamic Discard Timers

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Solution Overview

Problem

Existing wireless communication systems face challenges in efficiently managing delay status reporting (DSR) for logical channels, leading to potential delays and inefficient resource allocation due to suboptimal setting of discard timers, which can impact user experience and network performance.

Innovation Solution

Implementing AI-enabled DSR that allows wireless devices to determine and update discard timer thresholds using machine learning models, enabling dynamic adjustment based on quality of service requirements and buffer data characteristics, thereby improving timely data transmission and resource utilization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of time

If fixed discard timer values are used for delay status reporting, then device complexity is reduced and ease of operation is improved, but transmission delays increase and resource allocation efficiency deteriorates

Engineering Contradiction:
Improvetransmission delayVSAvoiddevice complexity
Core Design Contradiction:
Loss of timeVSDevice complexity

Solution Approach 1:

The patent implements dynamic discard timer adjustment by allowing wireless devices to select from multiple configured timer values based on current buffer data characteristics and QoS requirements. The MAC entity dynamically chooses appropriate timer values from a set of configured discard timer values, enabling the system to adapt to varying traffic conditions and reduce transmission delays without requiring complex centralized control.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent changes the parameter values of discard timers by configuring multiple possible values for different logical channel groups. The network can configure a set of discard timer values, and the wireless device selects appropriate values based on buffer data characteristics, thereby optimizing transmission timing without increasing overall system complexity.

Inventive Principle:
Principle #35Parameter changes

2Productivity

If dynamic discard timer adjustment is implemented, then resource allocation efficiency is improved and transmission timeliness is enhanced, but device complexity increases and configuration complexity increases

Engineering Contradiction:
Improveresource allocation efficiencyVSAvoiddevice complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent configures multiple discard timer values for different logical channel groups, allowing the system to select optimal timer values based on traffic characteristics. This parameter variation enables efficient resource allocation by matching timer settings to specific service requirements while maintaining manageable device complexity through standardized configuration procedures.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent applies different discard timer values to different logical channel groups based on their specific QoS requirements and data characteristics. Each LCG can have customized timer settings tailored to its traffic pattern, improving resource allocation efficiency for specific channels without requiring complete system redesign.

Inventive Principle:
Principle #3Local quality

3Reliability

If multiple discard timer values are configured for different logical channel groups, then transmission timeliness is improved and QoS requirements are better met, but configuration complexity increases and system complexity increases

Engineering Contradiction:
ImproveQoS requirement fulfillmentVSAvoidconfiguration complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent configures specific discard timer values for each logical channel group based on their individual QoS requirements. This localized configuration ensures that each channel receives appropriate timer settings tailored to its service needs, improving QoS fulfillment while keeping the overall configuration manageable through structured parameter organization.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent enables flexible parameter configuration by allowing multiple discard timer values to be assigned to different LCGs. The network can configure these parameters according to service requirements, and the wireless device selects appropriate values based on buffer data characteristics, thereby meeting diverse QoS requirements without excessive configuration complexity.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS20250386307A1Artificial intelligence-enabled medium access control delay status reporting
Publication Date: 2025.12.18 QUALCOMM INC
  • US20250386307A1 patent drawing
  • US20250386307A1 patent drawing
  • US20250386307A1 patent drawing

AI summary

Methods, systems, and devices for wireless communication are described. A wireless device may receive a configuration including a first set of one or more parameters associated with delay status reporting (DSR) for each of one or more logical channels (LCHs) of a group of LCHs associated with a medium access control (MAC) entity of the wireless device. At least one parameter of the first set of one or more parameters is associated with a plurality of values. The wireless device may select a value of the plurality of values for a timer associated with the DSR based at least in part on a second set of one or more parameters, and process one or more service data units (SDUs) for each of one or more LCHs of the group of LCHs according to the selected value for the timer associated with the DSR.