FEC Frame Segmentation for Low-Throughput Network Decoding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Low Throughput Networks (LTNs) for IoT applications face challenges in constructing efficient transmission streams that improve decoding efficiency and reduce error rates, particularly in environments with limited power consumption and long-range data transmission.
Innovation Solution
A transmission apparatus and method that utilize an FEC encoder to encode payload data into FEC code words, with a frame forming section creating frames comprising multiple repetitions of FEC code words and selected bits, optimizing frame structure for improved decoding and error correction in LTNs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If FEC code words are repeated multiple times in frames, then decoding efficiency and error correction capability are improved, but frame length and transmission time increase
Solution Approach 1:
The frame is segmented into two distinct portions: a first frame portion containing integer multiples of FEC code words (including repetitions) and a second frame portion containing remaining bits. This segmentation allows the system to optimize error correction in the first portion while minimizing unnecessary transmission time in the second portion, resolving the contradiction between reliability and transmission time.
Solution Approach 2:
The patent dynamically adjusts the number of FEC code word repetitions and the distribution of bits between the first and second frame portions based on channel conditions and data requirements. By changing these parameters adaptively, the system achieves optimal error correction capability while minimizing transmission time, thus resolving the technical contradiction.
2Productivity
If frames are constructed with integer multiples of FEC code word length, then decoding efficiency is improved, but frame flexibility and adaptability decrease
Solution Approach 1:
The frame structure is divided into a first frame portion (with integer multiples of FEC code word length for efficient decoding) and a second frame portion (containing remaining bits). This segmentation allows the system to maintain decoding efficiency in the first portion while accommodating variable data lengths in the second portion, thus resolving the contradiction between decoding efficiency and frame flexibility.
Solution Approach 2:
The patent uses partial repetitions of FEC code words in the first frame portion (rather than complete code words only) to achieve the necessary error correction capability while minimizing the frame length. This partial action approach maintains decoding efficiency while adapting to different data requirements, resolving the contradiction between productivity and adaptability.
Data Source
AI summary
A transmission apparatus, in particular for use in a Low Throughput Network, comprises an FEC encoder configured to encode payload data into FEC code words each having a predetermined code word length, and a frame forming section configured to form a frame having a predetermined frame length. A frame comprises a first frame portion having a first predetermined length of an integer multiple of the predetermined code word length and a second frame portion having a second predetermined length shorter than the predetermined code word length. The frame forming section is configured to include an FEC code word and a predetermined number of repetitions of said FEC code word into the first frame portion of a frame and to include a selected number of bits of said FEC code word into the second frame portion of said frame.