Parallel Scrambler Diversity for Receiver Malfunction Prevention
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Solution Overview
Problem
Communications systems face errors in data transmission, leading to receiver malfunctions due to phenomena like transition-sparse data streams and malicious patterns, which can cause bit error rate issues and physical layer failures, necessitating improved data integrity measures.
Innovation Solution
Implementing multiple scramblers with different scrambling schemes at the transmitter and corresponding de-scramblers at the receiver, along with error correction codes, to reduce the likelihood of receiver malfunctions by transforming and encoding data to avoid harmful patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single scrambler is used at the transmitter, then the device complexity is low, but the reliability of data transmission deteriorates due to potential receiver malfunctions from harmful data patterns
Solution Approach 1:
The patent divides a single scrambler into multiple parallel scramblers (first scrambler, second scrambler, etc.), each processing the same input data independently. This segmentation allows the system to select among multiple scrambling outputs, reducing the probability that any single harmful data pattern will cause receiver malfunction, thereby improving reliability while maintaining manageable complexity through parallel architecture.
Solution Approach 2:
The patent changes the parameter of scrambling by using multiple scramblers with different scrambling polynomials or seed values. By varying the scrambling parameters across multiple instances, the system generates diverse scrambled outputs from the same input, making it highly unlikely that all outputs will contain harmful patterns simultaneously, thus improving transmission reliability.
2Reliability
If multiple scramblers are implemented in parallel, then the reliability of data transmission improves by reducing the probability of harmful data patterns, but the device complexity increases
Solution Approach 1:
The patent creates multiple copies of the scrambler functional block (first scrambler, second scrambler, third scrambler, etc.), where each copy processes the same input data independently. By selecting one output from multiple identical or similar scrambling structures, the system achieves diversity in scrambled outputs without requiring fundamentally different complex architectures, thus improving reliability while controlling complexity through replication.
Solution Approach 2:
The patent designs the multiple scramblers to be universal components that can handle various input data types and configurations. Each scrambler is designed with the same core functionality but different parameters (polynomials, seeds), allowing them to serve multiple purposes: independent scrambling, diversity generation, and fault tolerance, thereby managing complexity through standardized multi-functional design.
3Reliability
If error correction codes are added to the transmission system, then the reliability improves by detecting and correcting errors, but the productivity decreases due to additional processing overhead
Solution Approach 1:
The patent applies error correction coding in advance during the data preparation stage, before transmission occurs. By pre-processing the data with error correction codes and integrating this with the multiple scrambler output selection, the system prepares robust data packets that can withstand transmission errors, improving reliability while minimizing the need for retransmissions that would otherwise reduce productivity.
Data Source
AI summary
Examples described herein relate to a network interface device that includes first circuitry to perform a first scrambling operation on input data; second circuitry to perform a second scrambling operation on the input data; and third circuitry to select the second scrambled input data based on the first scrambled input data including a data sequence that is associated with receiver malfunction and the second scrambled input data including the data sequence that is associated with receiver malfunction.