PUCCH Format 3 Channel Coding for Carrier Aggregation Payloads
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In a carrier aggregation environment, existing methods are inefficient for coding and transmitting uplink control information, particularly channel quality control information, over the physical uplink control channel (PUCCH), especially when dealing with larger payload sizes and multiple component carriers.
Innovation Solution
The method involves using PUCCH format 3 to efficiently transmit uplink control information and channel quality control information, employing channel coding schemes such as Reed Muller codes and Tail-Biting Convolutional Codes, and dynamically selecting the channel coding scheme based on the CQI payload size to optimize transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing PUCCH formats are used for transmitting CQI in carrier aggregation environment, then backward compatibility is maintained, but transmission efficiency and capacity for larger payloads deteriorate
Solution Approach 1:
The patent segments the CQI payload into two parts: first 11 bits transmitted using conventional PUCCH format, and remaining bits transmitted using PUCCH format 3 with dual RM(32,O) encoding. This segmentation allows the system to maintain backward compatibility while extending payload capability.
Solution Approach 2:
The patent merges two different transmission methods: conventional PUCCH format for the first 11 bits and PUCCH format 3 with dual RM(32,O) encoding for the remaining bits. This combining approach enables efficient transmission of larger payloads while maintaining compatibility with existing systems.
2Quantity of substance
If dual RM(32,O) encoding is used for PUCCH format 3, then payload capacity for larger CQI is improved, but coding complexity increases
Solution Approach 1:
The patent dynamically selects the encoding method based on payload size: for payloads up to 11 bits, conventional encoding is used; for larger payloads, dual RM(32,O) encoding is applied. This dynamic adaptation optimizes the balance between payload capacity and coding complexity.
Solution Approach 2:
The patent changes the coding parameters based on payload size requirements. When payload exceeds 11 bits, the system transitions from single RM(32,O) to dual RM(32,O) encoding, adjusting the coding parameters to match the increased data quantity while managing complexity.
3Loss of information
If CQI payload size is increased for multiple component carriers, then information completeness is improved, but transmission reliability deteriorates
Solution Approach 1:
The patent segments the CQI transmission into two parts: first 11 bits transmitted with conventional formatting for reliability, and remaining bits transmitted using PUCCH format 3 with dual RM(32,O) encoding. This segmentation allows transmission of complete CQI information for multiple component carriers while maintaining reliability through appropriate coding for each segment.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A method of coding and transmitting channel quality control information through a physical uplink control channel (PUCCH) is disclosed. The method of transmitting channel state control information (CQI and/or PMI) in a wireless access system includes performing channel coding with respect to the channel state control information according to a payload size of the channel state control information, performing rate matching with respect to the channel state control information coded through channel coding according to physical uplink control channel (PUCCH) format 3, and transmitting the channel state control information using the PUCCH format 3.