Wireless Message Decoding With Conditional LDPC Bypass
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently decoding data without requiring extensive channel decoding, especially under favorable communication channel conditions, leading to increased power consumption and resource utilization.
Innovation Solution
Implementing a method where receivers identify whether systematic channel encoding, such as LDPC codes, was applied to the data block, allowing for the extraction of information bits without decoding when error checks pass, and only decoding when errors are detected, thereby reducing unnecessary computations and resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If channel decoding is always performed to ensure reliable data reception, then communication reliability is improved, but power consumption and computational load increase
Solution Approach 1:
The patent applies dynamics by making the decoding operation conditional rather than static. The receiver dynamically adjusts whether to perform channel decoding based on real-time channel condition assessment. When channel conditions are favorable (high signal quality), the receiver skips decoding and directly extracts information bits from systematically encoded data. When channel conditions are poor, full decoding is performed to ensure reliability. This dynamic adaptation resolves the contradiction by making power consumption variable based on actual communication needs.
Solution Approach 2:
The patent changes the operational parameter of decoding execution from a fixed state to a variable state based on channel quality metrics. By monitoring channel conditions and adjusting the decoding operation accordingly, the system optimizes the balance between reliability and power consumption. The parameter change involves switching between two operational modes: full decoding mode for poor channels and direct extraction mode for good channels.
2Reliability
If channel decoding is always performed to correct transmission errors, then error correction capability is improved, but computational load and processing time increase
Solution Approach 1:
The system dynamically adjusts processing intensity based on channel conditions. Instead of always performing computationally intensive channel decoding, the receiver assesses channel quality and selectively applies decoding only when necessary. This dynamic approach maintains error correction capability when needed while maximizing processing efficiency during favorable transmission conditions, directly resolving the contradiction between reliability and productivity.
Solution Approach 2:
The patent applies partial action by performing only the necessary portion of the decoding process. When channel conditions are good, partial action means skipping the decoding step entirely and directly extracting information bits from the systematically encoded data structure. When conditions are poor, full action (complete decoding) is performed. This principle optimizes processing efficiency while maintaining sufficient error correction capability.
3Use of energy by moving object
If systematic channel encoding is used to allow direct information bit extraction, then power consumption is reduced, but the ability to correct errors in poor channel conditions deteriorates
Solution Approach 1:
The patent resolves this contradiction through dynamic operation mode selection. The receiver continuously monitors channel conditions and switches between two modes: In direct extraction mode (for good channels), power consumption is minimized by skipping decoding and directly reading information bits from the systematic code structure. In decoding mode (for poor channels), full error correction capability is restored by performing channel decoding. This dynamic switching ensures that power savings are achieved when possible while maintaining error correction capability when needed.
Data Source
AI summary
Aspects of the subject disclosure may include, for example, obtaining a received channel-encoded data block having information bits, a transmitted error-check value, and redundant code bits. The redundant code bits correspond to a channel code applied to the received channel-encoded data block prior to transmission via a communication channel. A channel code type is identified and responsive to it being systematic, the information bits and the transmitted error-check value are obtained without decoding according to the channel code. The received channel-encoded data block is checked according to the transmitted error-check value to obtain a result. Responsive to the result not indicating an error, extracting the information bits without decoding the received channel-encoded data block according to the channel code. Responsive to the result indicating an error, decoding the received channel-encoded data block according to the channel code to obtain decoded information bits. Other embodiments are disclosed.