Shared-PSSN FEC Binding for Source and Repair PDU Sets
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing digital video transmission technologies face challenges in efficiently delivering extended reality (XR) media data due to inefficiencies in error correction mechanisms, particularly in marking and binding source and repair packets, which hinders optimal network delivery and compatibility.
Innovation Solution
The implementation of application-layer forward error correction (FEC) techniques that bind source and repair packets using shared PDU set sequence numbers (PSSN) and enhanced RTP header extensions to facilitate efficient error correction and network optimization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If application-layer FEC techniques are implemented with shared PSSN for source and repair PDUs, then error correction reliability is improved, but device complexity increases
Solution Approach 1:
The patent segments the PDU transmission by dividing data into source PDUs and repair PDUs within PDU sets, each identifiable by shared PSSN. This segmentation allows receivers to efficiently separate and process error correction information without increasing overall system complexity, as each segment is independently manageable.
Solution Approach 2:
The patent applies preliminary action by pre-establishing the binding relationship between source and repair PDUs through shared PSSN before transmission. This preliminary identification mechanism allows receivers to immediately recognize and associate repair PDUs with their corresponding source PDUs, improving error correction reliability without requiring complex real-time analysis.
2Productivity
If PDU sets with shared PSSN are used for source and repair PDUs, then network identification efficiency is improved, but information overhead increases
Solution Approach 1:
The shared PSSN serves multiple functions simultaneously: it identifies the PDU set, binds source and repair PDUs together, and provides sequence numbering. This multi-functionality improves network identification efficiency without proportionally increasing information overhead, as the same identifier performs multiple tasks.
Solution Approach 2:
The patent merges the identification functions for source PDUs and repair PDUs by using a shared PSSN. Instead of requiring separate identification mechanisms, the same PDU set sequence number identifies both types of PDUs, reducing overall information overhead while maintaining identification efficiency.
3Speed
If binding source and repair PDUs with shared PSSN is implemented, then error correction speed is improved, but processing complexity increases
Solution Approach 1:
The binding relationship between source and repair PDUs is established in advance through shared PSSN assignment. This preliminary binding allows receivers to immediately process error correction without complex matching algorithms, as the association is pre-defined by the shared sequence number.
Solution Approach 2:
The shared PSSN acts as an intermediary that simplifies the binding process. Instead of requiring direct complex matching between source and repair PDUs, the shared PSSN serves as a simple mediator that automatically associates the two, improving processing speed while keeping implementation complexity manageable.
Data Source
AI summary
A device configured to transmit data may generate one or more source protocol data units (PDUs) in a PDU set, and generate one or more corresponding repair PDUs in the PDU set, wherein the source PDUs and the repair PDUs share the same PDU set sequence number (PSSN), and wherein the corresponding repair PDUs are used for forward error correction (FEC), and transmit the PDU set. A real-time transport protocol header extension (HE) may include information that indicates whether a PDU in the PDU set is a source PDU or a repair PDU.