Network-Coded Status Reporting for Lower Feedback and Delay

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Solution Overview

Problem

Existing communication systems face challenges in reducing feedback overhead, retransmission overhead, and overall transmission delay when network coding is used, which can degrade cell capacity.

Innovation Solution

Implementing innovative network coding techniques, including adaptive network coding and feedback-based schemes, to optimize transmission and reduce feedback overhead, retransmission overhead, and improve cell capacity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If network coding is used to reduce feedback overhead, then feedback overhead is reduced, but retransmission overhead and transmission delay increase

Engineering Contradiction:

Improvefeedback overheadVSAvoidtransmission delay

Core Design Contradiction:

Loss of informationVSLoss of time

Solution Approach 1:

The status report is segmented into two parts: a first status report sent immediately after receiving a first threshold number of PDUs, and a second status report sent after receiving a second threshold number of PDUs. This segmentation allows the system to provide feedback at multiple stages, reducing overall transmission delay while managing feedback overhead efficiently through selective reporting.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system implements periodic status reporting by sending the first status report after receiving a first threshold number of PDUs and the second status report after receiving a second threshold number of PDUs. This periodic feedback mechanism ensures timely retransmission requests without generating excessive feedback traffic, balancing feedback overhead reduction with transmission delay minimization.

Inventive Principle:

Principle #19Periodic action

2Loss of information

If network coding is used to reduce feedback overhead, then feedback overhead is reduced, but retransmission overhead increases

Engineering Contradiction:

Improvefeedback overheadVSAvoidretransmission overhead

Core Design Contradiction:

Loss of informationVSQuantity of substance

Solution Approach 1:

The status reporting is divided into multiple segments (first and second status reports) with different triggering conditions. This allows the system to request retransmission of specific PDU ranges efficiently, reducing retransmission overhead by avoiding unnecessary retransmissions of already received PDUs while keeping feedback overhead manageable through selective reporting.

Inventive Principle:

Principle #1Segmentation

3Productivity

If network coding is used to improve cell capacity, then cell capacity is improved, but feedback overhead and retransmission overhead increase

Engineering Contradiction:

Improvecell capacityVSAvoidfeedback overhead

Core Design Contradiction:

ProductivityVSLoss of information

Solution Approach 1:

The system employs periodic status reporting with configurable thresholds to balance cell capacity improvement with feedback overhead control. By sending status reports only when specific thresholds are reached, the system maintains efficient cell utilization without generating excessive feedback traffic that would reduce overall network capacity.

Inventive Principle:

Principle #19Periodic action

Data Source

PatentUS20260081713A1Methods, architectures, apparatuses and systems for status reporting when network coding is used

Publication Date: 2026.03.19 INTERDIGITAL PATENT HOLDINGS INC

AI summary

Procedures, methods, architectures, apparatuses, systems, devices, and computer program products using wireless transmit/receive unit (WTRU) configured for receiving configuration information indicating a minimum number of network coded packet required to recover a network coding generation; receiving a network coded packet, wherein the network coded packet comprises information indicating a network coding generation; determining that a trigger condition is met based on the configuration information; and sending a status report, based on the trigger condition being met, wherein the status report comprises information indicating a number of network coded packets received.