In-band Control Information Coding for Wireless Reliability
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Solution Overview
Problem
In wireless communication systems, existing technologies face challenges in efficiently transmitting and decoding in-band control information, which is critical for maintaining low Block Error Rate (BLER) and ensuring reliable communication, especially in scenarios where control information is transmitted together with data using the same channel.
Innovation Solution
The method involves separately encoding control information and data information, generating coded control-data information, and transmitting it over a wireless communication channel, allowing for the generation of log-likelihood ratios (LLRs) to decode both control and data information effectively, thereby reducing the BLER.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If control information and data information are transmitted together using the same channel (in-band control information), then spectral efficiency is improved, but the reliability of control information transmission deteriorates due to increased Block Error Rate
Solution Approach 1:
The patent segments the transmitted signal into multiple layers: a first layer containing coded control information with higher reliability, and a second layer containing coded data information. This segmentation allows the control information to be protected with more robust coding and transmission resources, thereby improving its reliability while still transmitting both types of information through the same channel for spectral efficiency.
2Reliability
If control information is encoded with higher reliability than data information, then the Block Error Rate of control information is reduced, but the complexity of the encoding and decoding process increases
Solution Approach 1:
The patent applies different quality levels of coding and transmission resources to different parts of the transmitted information. Specifically, control information is allocated to the first layer with higher coding redundancy and more robust modulation, while data information in the second layer uses less redundant coding. This local differentiation of quality allows the system to achieve high control information reliability without uniformly increasing the complexity of the entire transmission system.
Data Source
AI summary
Various aspects of the present disclosure provide for methods, apparatus, and computer software for transmitting in-band control information in a wireless communication channel. A control and data information coding scheme is utilized to reduce the block error rate (BLER) of in-band control information in various scenarios. A subframe carries coded control information, coded data information, and coded control-data information for reducing the BLER of the in-band control information. The coded control information and coded data information are mix-coded to generate coded control-data information.