Long PUCCH Design for 5G NR Uplink Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face limitations in communication flexibility and efficiency, particularly in the design of the physical uplink control channel (PUCCH) for 5G new radio (NR), which affects the ability to efficiently transmit uplink control information across multiple slots and frequency bands.
Innovation Solution
The implementation of a long PUCCH design that spans multiple slots, with configurations including different waveforms, resource block allocations, and frequency hopping, allowing for flexible selection based on payload size and channel conditions, supports both CP-OFDM and DFT-S-OFDM waveforms, and employs various reference symbol patterns and orthogonal sequences for multiplexing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a long PUCCH design spanning multiple slots is implemented, then communication efficiency and flexibility for transmitting control information is improved, but device complexity and configuration requirements increase
Solution Approach 1:
The PUCCH is divided into multiple slots with each slot containing a specific number of symbols (first number of symbols in first slot, second number of symbols in second slot, etc.). This segmentation allows the control information to be transmitted across multiple time units while maintaining manageable structure and configuration at each segment level.
Solution Approach 2:
The patent implements dynamic configuration where the number of symbols per slot and the total number of slots can be adjusted based on the size of control information and channel conditions. The first and second numbers of symbols per slot can be different, allowing adaptive allocation of resources to optimize communication efficiency while managing complexity through flexibility rather than fixed rigid structures.
2Adaptability or versatility
If multiple waveform types (CP-OFDM and DFT-S-OFDM) are supported, then adaptability to different channel conditions is improved, but device complexity increases
Solution Approach 1:
The patent designs a unified PUCCH structure that can accommodate multiple waveform types (CP-OFDM and DFT-S-OFDM) within the same multi-slot framework. This universal design allows the system to support different waveform configurations without requiring separate dedicated structures, thereby achieving multi-functionality and reducing overall system complexity compared to having entirely separate systems for different waveforms.
Solution Approach 2:
The patent allows changing waveform parameters such as the number of symbols per slot and resource block allocations to adapt between CP-OFDM and DFT-S-OFDM modes. By adjusting these parameters within the existing multi-slot framework rather than redesigning the fundamental structure, the system achieves waveform flexibility while controlling processing complexity through parameter variation rather than structural redesign.
3Reliability
If frequency hopping is implemented across multiple slots, then communication reliability is improved, but device complexity and overhead increase
Solution Approach 1:
Frequency hopping is implemented at the slot level where each slot can be assigned to different frequency resources. The multi-slot structure allows the frequency hopping pattern to be segmented across multiple time units, with each slot transitioning to a different frequency block. This segmentation provides frequency diversity for improved reliability while keeping the hopping configuration manageable through structured time-frequency allocation rather than complex continuous hopping patterns.
Data Source
AI summary
A user equipment (UE) is described. The UE includes a processor and memory in electronic communication with the processor. Instructions stored in the memory are executable to acquire a first higher layer configuration indicating at least a long uplink control channel (PUCCH) resource configuration. The instructions are also executable to acquire a second higher layer configuration indicating multiple sets of PUCCH resource configurations. One set of PUCCH resource configurations within the multiple sets of PUCCH resource configurations include the long PUCCH resource configuration. The instructions are further executable to select a set of PUCCH resource configurations from the sets of PUCCH resource configurations based on a payload size of uplink control information (UCI). The instructions are additionally executable to transmit the UCI on a PUCCH resource, the PUCCH resource corresponding to a PUCCH resource configuration within the selected set of PUCCH resource configurations.