Uplink Control Channel TBCC Encoding for Wireless Systems
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently transmitting uplink control information, particularly in handling small-sized data through a large container format, which affects system complexity and the satisfaction of encoder constraints.
Innovation Solution
The method involves using tail biting convolution coding (TBCC) with a pre-configured threshold value, where uplink control information is encoded by repeating bits corresponding to the control information an odd number of times, ensuring the bit number meets or exceeds the TBCC threshold, and configuring the uplink control channel based on a short transmission time interval.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If uplink control information of small size is transmitted through a large container format, then transmission robustness is improved, but system complexity increases
Solution Approach 1:
The patent changes the parameter of container size to match the information size dynamically. Instead of always using a large container format, the system selects container sizes that match the actual information being transmitted, thereby maintaining transmission robustness while reducing unnecessary system complexity.
Solution Approach 2:
The patent introduces dynamic adaptation where the container format is selected based on the size of the uplink control information. This dynamic approach allows the system to optimize between robustness and complexity by matching container capacity to actual needs rather than using a fixed large format for all cases.
2Productivity
If different formats are used for different sizes of information, then transmission efficiency is improved, but device complexity increases
Solution Approach 1:
The patent creates a universal container structure that can accommodate different sizes of uplink control information through a single standardized format. This multi-functional container design eliminates the need for multiple specialized formats, thereby maintaining transmission efficiency while reducing format management complexity.
Solution Approach 2:
The patent segments the container into flexible fields that can be dynamically sized or padded based on the information being transmitted. This segmentation allows a single universal format to handle variable information sizes efficiently without requiring multiple distinct format definitions.
3Reliability
If encoder constraints are strictly satisfied, then coding reliability is improved, but adaptability decreases
Solution Approach 1:
The patent applies preliminary padding or repetition to the uplink control information before encoding, ensuring that the input to the encoder always meets the minimum size constraints. This preliminary action allows the use of standardized encoders with fixed constraints while maintaining flexibility in handling various information sizes through pre-processing.
Solution Approach 2:
The patent introduces an intermediary processing stage between information generation and encoding that adjusts the information to meet encoder constraints. This intermediary layer (through padding, repetition, or segmentation) acts as a mediator that preserves both coding reliability and adaptability by translating variable inputs into standardized encoder-compatible formats.
Data Source
AI summary
Disclosed are a method for uplink transmission in a wireless communication system, and an apparatus therefor. Specifically, a method by which a terminal performs an uplink transmission using tail biting convolution coding (TBCC) in a wireless communication system comprises the steps of: encoding a coded bit using a plurality of bits; and transmitting the coded bit, which has been encoded, to a base station using an uplink control channel, wherein the plurality of bits are generated by repeating odd number of times at least one bit corresponding to uplink control information, and the number of the plurality of bits may be set to be equal to or larger than a predetermined threshold for the TBCC.