Packet Loss Recovery Sequencing in 2D XOR FEC Receivers
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Solution Overview
Problem
The two-dimensional XOR-based FEC encoding method for video transmission requires heavy recovery processing, leading to increased system cost and time for recovering lost packets, which is inefficient.
Innovation Solution
A decoding device and method that determines a procedure for recovering missing packets based on the packet missing pattern, using a decoding determination unit to optimize the recovery process in the two-dimensional XOR-based FEC encoding method, allowing for maximum recovery performance with minimal processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two-dimensional XOR-based FEC encoding method is used for video transmission, then packet recovery capability is improved, but recovery processing time and system cost increase
Solution Approach 1:
The patent performs preliminary analysis of the packet missing pattern to determine the optimal recovery procedure before executing the actual recovery processing. The decoding determination unit pre-evaluates which packets are missing and formulates a recovery plan in advance, allowing the decoding unit to execute the predetermined procedure efficiently without trial-and-error processing during the actual recovery phase.
Solution Approach 2:
The patent segments the recovery processing into distinct phases: (1) packet missing pattern analysis, (2) recovery procedure determination, and (3) execution of recovery. This segmentation allows each phase to be optimized independently, with the determination phase focusing on pattern recognition and the execution phase focusing on efficient recovery operations based on the predetermined procedure.
2Reliability
If two-dimensional XOR-based FEC encoding method is used for video transmission, then packet recovery capability is improved, but system cost increases
Solution Approach 1:
The system performs self-diagnosis by automatically analyzing the packet missing pattern and determining the appropriate recovery procedure without external intervention. The decoding determination unit autonomously evaluates the missing packets and formulates a recovery strategy, eliminating the need for complex external control systems or manual configuration, thereby reducing overall system cost while maintaining high recovery capability.
Solution Approach 2:
The patent dynamically changes the recovery procedure parameters based on the observed packet missing pattern. Instead of using a fixed, overly complex recovery algorithm for all cases, the system adapts the recovery approach to match the specific pattern of missing packets, optimizing resource usage and reducing system complexity while maintaining effective recovery capability.
3Ease of operation
If conventional packet recovery processing is used, then implementation is simple, but recovery performance is insufficient
Solution Approach 1:
The patent maintains implementation simplicity by using basic XOR operations for actual packet recovery, while the enhanced recovery performance is achieved through preliminary analysis of the missing packet pattern. The decoding determination unit pre-processes the information about which packets are missing and determines the optimal recovery sequence, allowing simple decoding operations to achieve superior recovery performance compared to conventional methods that lack this preliminary analysis step.
Data Source
AI summary
A decoding device that includes a decoding determination unit to determine a procedure of recovering and decoding missing packets in consideration of a packet missing pattern in data including a set of media packets and redundant packets generated by a two-dimensional XOR-based FEC encoding method. Further, a decoding unit executes the recovery of the missing packets according to the procedure determined by the decoding determination unit.