PUCCH Power Control for eURLLC Reliability and Latency
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Solution Overview
Problem
Existing wireless communication systems face challenges in dynamically adjusting power control for physical uplink control channels (PUCCH) to meet the diverse and conflicting requirements of different services such as eMBB, mMTC, and URLLC, particularly in terms of reliability and latency, leading to inefficiencies in spectrum and energy usage.
Innovation Solution
Implementing enhanced power control techniques for PUCCH, including RRC and MAC CE configurations for dynamic adjustment of PUCCH resource indicators and power control values, allowing for beam-specific and flexible power settings to support eURLLC use cases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If dynamic power control adjustment for PUCCH is implemented to meet diverse service requirements, then system adaptability and reliability are improved, but device complexity and configuration overhead increase
Solution Approach 1:
The patent implements dynamic power control by changing power control parameters (p0-NR-PUCCH, delta-PUCCH-Offset) based on service type and beam conditions. Different parameter sets are configured for different services (eMBB, mMTC, URLLC) and adjusted dynamically through MAC CE commands, allowing the system to adapt power levels to meet diverse reliability and latency requirements without fundamental architectural changes
Solution Approach 2:
The patent introduces dynamic adjustment mechanisms where power control parameters can be modified in real-time through MAC CE commands based on current service requirements and channel conditions. The system transitions from static to dynamic power control, enabling adaptability to varying service demands (eMBB, mMTC, URLLC) and beam-specific conditions while maintaining manageable complexity through standardized procedures
2Reliability
If beam-specific power settings are implemented for eURLLC, then reliability and latency performance are improved, but energy consumption and processing overhead increase
Solution Approach 1:
The patent applies beam-specific power settings where different power control parameters are configured for different beams and spatial directions. This local quality approach ensures that each beam is optimized for its specific service requirements (e.g., higher power for URLLC beams requiring high reliability, lower power for eMBB beams), rather than applying uniform power settings across all beams, thus improving reliability where needed while conserving energy elsewhere
Solution Approach 2:
The patent segments the power control configuration by service type and beam, creating separate parameter sets for different services (eMBB, mMTC, URLLC) and different beams. This segmentation allows targeted power optimization for eURLLC beams without unnecessarily increasing power consumption for other beams and services, balancing reliability requirements with energy efficiency
Data Source
AI summary
Technology for a base station operable to encode a physical uplink control channel (PUCCH) resource indicator field length for transmission to a user equipment (UE) for enhanced Ultra Reliable Low Latency Communications (URLLC) (eURLLC) is disclosed. The gNB can determine the PUCCH resource indicator field length that indicates a length of a PUCCH resource indicator field, wherein the PUCCH resource indicator field length is related to transmission of a number of PUCCH symbols for eURLLC. The gNB can encode the PUCCH resource indicator field length for transmission in downlink control information (DCI) to the UE.