DMRS Bundling Time-Domain Window Control for PUCCH Power Consistency
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Solution Overview
Problem
5G NR networks face challenges in maintaining power consistency and phase continuity across PUCCH transmissions due to events like changes in power control parameters, leading to coverage loss and reduced quality of service.
Innovation Solution
A user equipment (UE) in a 5G NR network determines nominal and actual time-domain windows for DMRS bundling, adjusting the start of the actual TDW in response to events that disrupt power consistency and phase continuity, ensuring these conditions are maintained across PUCCH transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If PUCCH transmissions are repeated across multiple slots to enhance coverage, then coverage is improved, but power consistency and phase continuity cannot be maintained across transmissions
Solution Approach 1:
The patent segments the continuous PUCCH repetition transmissions into discrete time-domain windows (TDWs) with defined boundaries. Each TDW is identified by a start symbol and end symbol, creating segmented transmission intervals where power consistency and phase continuity can be individually managed and maintained within each window, while allowing controlled transitions between windows.
Solution Approach 2:
The patent applies preliminary action by determining and configuring the time-domain window parameters (start symbol, end symbol) in advance before the actual PUCCH repetitions occur. The TDW configuration is prepared and established beforehand, allowing the system to pre-establish the boundaries and characteristics of each transmission window to ensure power consistency and phase continuity are maintained from the outset of each window.
2Adaptability or versatility
If different power control parameters are used for PUCCH repetitions, then adaptability is improved, but power consistency across transmissions is disrupted
Solution Approach 1:
The patent applies local quality by allowing different power control parameters to be applied within different time-domain windows rather than requiring uniform parameters across all repetitions. Each TDW can have its own power control characteristics, enabling local adaptation to changing channel conditions while maintaining power consistency within each local window boundary.
Solution Approach 2:
The patent introduces dynamics by making the time-domain window configuration adjustable and adaptable. The TDW parameters (start symbol, end symbol, duration) can be dynamically configured based on channel conditions, traffic requirements, and power control needs, allowing the system to adapt to varying conditions while maintaining power consistency within each dynamically defined window.
Data Source
AI summary
A user equipment (UE) may determine one or more nominal time-domain windows (TDWs) for demodulation reference signals (DMRS) bundling for physical uplink control channel (PUCCH) transmissions of a PUCCH repetition. A start of a new actual TDW for the DMRS bunding is determined in response to an event which causes power consistency and phase continuity not to be maintained across the PUCCH transmissions of the PUCCH repetition. The UE may maintain power consistency and phase continuity within the new actual TDW across two PUCCH transmissions of the PUCCH repetition. The event may comprise a use of different power control parameters for the two of the PUCCH transmissions of the PUCCH repetition within one of the nominal TDWs.