Dynamic Redundancy Overhead for Network Coding

Solution Overview

Problem

Existing wireless communication systems face challenges in efficiently managing redundancy overhead for network coding, as a single redundancy overhead is applied to all users regardless of varying channel qualities, leading to excessive or insufficient redundancy.

Innovation Solution

Implementing a dynamic redundancy overhead system where base stations determine the redundancy overhead for each user based on the specific channel quality, adjusting it dynamically to optimize communication reliability and efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a single redundancy overhead is applied to all users, then device complexity is reduced and ease of operation is improved, but communication reliability deteriorates for users with varying channel qualities

Engineering Contradiction:

Improvecommunication reliabilityVSAvoidredundancy overhead management complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies different redundancy overhead values to different users based on their individual channel qualities. The base station determines a specific redundancy overhead for each user equipment (UE) according to that UE's channel conditions, rather than using a uniform redundancy overhead for all users. This local differentiation ensures that each user receives appropriate redundancy levels matched to their specific communication needs.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent implements dynamic adjustment of redundancy overhead based on real-time channel quality feedback. The base station monitors channel conditions and adjusts the redundancy overhead dynamically for each user, allowing the system to adapt to changing communication conditions. This dynamic approach enables the system to optimize reliability by increasing redundancy when channel quality deteriorates and reducing redundancy when conditions improve.

Inventive Principle:

Principle #15Dynamics

2Reliability

If high redundancy overhead is used for all users, then communication reliability is improved, but system productivity and resource efficiency deteriorate

Engineering Contradiction:

Improvecommunication reliabilityVSAvoidsystem efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent applies different redundancy overhead values to different users based on their individual channel qualities. The base station determines a specific redundancy overhead for each user equipment (UE) according to that UE's channel conditions, rather than using a uniform redundancy overhead for all users. This local differentiation ensures that each user receives appropriate redundancy levels matched to their specific communication needs.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent changes the redundancy overhead parameter dynamically based on channel quality measurements. By adjusting this key parameter according to actual communication conditions, the system optimizes the balance between reliability and efficiency. Users with good channel quality receive lower redundancy overhead, while users with poor channel quality receive higher redundancy overhead, thereby optimizing overall system performance.

Inventive Principle:

Principle #35Parameter changes

3Productivity

If low redundancy overhead is used for all users, then system productivity and resource efficiency are improved, but communication reliability deteriorates for users with poor channel quality

Engineering Contradiction:

Improvesystem efficiencyVSAvoidcommunication reliability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent applies different redundancy overhead values to different users based on their individual channel qualities. The base station determines a specific redundancy overhead for each user equipment (UE) according to that UE's channel conditions, rather than using a uniform redundancy overhead for all users. This local differentiation ensures that each user receives appropriate redundancy levels matched to their specific communication needs.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent implements a feedback mechanism where the base station monitors channel quality and adjusts redundancy overhead accordingly. By continuously monitoring communication conditions and adapting the redundancy level, the system ensures reliable communication for all users while maintaining overall system efficiency. The feedback loop enables the system to respond to changing conditions and maintain optimal performance.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS12294875B2Network coding with dynamic redundancy overhead

Publication Date: 2025.05.06 QUALCOMM INC

AI summary

Methods, systems, and devices for wireless communications are described. In some wireless communications systems, a base station may transmit sets of network coding encoded packets user equipments (UEs), and each set of network coding encoded packets may be associated with a redundancy overhead. The base station may dynamically identify the redundancy overhead for transmitting sets of network coding encoded packets to each UE based on a failure rate associated with a previous transmission of network coding encoded packets to that UE. For example, the base station may determine a failure rate associated with a transmission of a first set of network coding encoded packets and may identify a redundancy overhead associated with one or more second sets of network coding encoded packets based on the determined failure rate. In some cases, the base station may identify different redundancy overheads for transmissions of network coding encoded packets to different UEs.