PUCCH UCI Bit Segmentation for Adaptive Sequence Transmission
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently transmitting uplink control information (UCI) due to varying channel conditions, which can lead to suboptimal modulation sequences and reduced reliability.
Innovation Solution
The system separates UCI bits into different subsets and applies distinct modulation sequences to each subset based on configuration information, allowing for flexible and adaptive transmission strategies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single modulation sequence is used for all UCI bits, then the transmission process is simple, but the reliability is reduced due to varying channel conditions
Solution Approach 1:
The encoded UCI bits are segmented into multiple subsets, with each subset assigned to a different modulation sequence. This segmentation allows the system to apply diverse modulation strategies to different portions of the data, improving reliability under varying channel conditions while maintaining manageable complexity through structured division of the transmission task.
Solution Approach 2:
Different modulation sequences are applied to different subsets of UCI bits based on local channel conditions. Each subset can be optimized for its specific transmission requirements, allowing the system to adapt to varying channel qualities across different time or frequency resources without requiring complete reprocessing of all data.
2Reliability
If multiple modulation sequences are applied to different UCI bit subsets, then the transmission reliability is improved, but the device complexity increases
Solution Approach 1:
The encoded UCI bits are segmented into multiple subsets, with each subset assigned to a different modulation sequence. This segmentation allows the system to apply diverse modulation strategies to different portions of the data, improving reliability under varying channel conditions while maintaining manageable complexity through structured division of the transmission task.
Solution Approach 2:
Different modulation sequences are applied to different subsets of UCI bits based on local channel conditions. Each subset can be optimized for its specific transmission requirements, allowing the system to adapt to varying channel qualities across different time or frequency resources without requiring complete reprocessing of all data.
3Productivity
If modulation sequences are optimized for varying channel conditions, then the transmission efficiency is improved, but the processing complexity increases
Solution Approach 1:
Multiple modulation sequences are determined in advance based on configuration information before actual transmission. This preliminary preparation allows the system to have optimized sequences ready for different channel conditions, improving transmission efficiency when conditions vary without requiring complex real-time processing during actual data transmission.
Solution Approach 2:
The system changes modulation parameters (sequences) based on channel conditions and configuration information. By pre-determining multiple sequences with different characteristics, the system can efficiently adapt to varying channel conditions through parameter selection rather than complex real-time optimization, improving productivity while controlling processing complexity.
Data Source
AI summary
Systems, methods, and instrumentalities are described herein for physical uplink control channel (PUCCH) transmissions. A WTRU may transmit uplink control information (UCI), for example, by encoding the UCI, distributing the coded bits to at least one symbol set, and transmitting at least one sequence over resources of at least one symbol set. A sequence for a (e.g., each) symbol set may be selected from a set of candidate sequences. The number of symbol sets and/or candidate sequences may depend on the number of coded bits assigned to the symbol set. A WTRU may determine a parameter of a transmission (e.g., a number of symbol sets), for example, based on an estimation of Doppler. Transmission may be performed in multiple resource blocks (RBs). Hopping of base sequence and/or cyclic shift may be used, for example, for interference randomization. Unequal error protection may be used for different types of UCI.