PUCCH Power Control for Multiple TRPs Using Segmented Parameter Sets
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face challenges in effectively managing PUCCH power control when transmitting to multiple TRPs, particularly in FR1, where PUCCH spatial relations are not configured, leading to inefficiencies in power control parameter management.
Innovation Solution
The system configures multiple power control parameter sets for each PUCCH resource or group, allowing for separate power control adjustments based on dedicated sets of parameters, including pathloss reference signals and closed-loop indices, to optimize PUCCH transmission power towards multiple TRPs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple power control parameter sets are configured for PUCCH resources, then PUCCH power control precision towards multiple TRPs is improved, but system complexity increases
Solution Approach 1:
The patent segments the power control parameters into multiple independent sets, where each set is specifically configured for a particular TRP. This allows the system to manage power control on a per-TRP basis, improving precision without requiring a complete redesign of the power control mechanism. Each parameter set includes TRP-specific pathloss reference signals and closed-loop indices, enabling granular control.
Solution Approach 2:
The patent introduces a new dimension to power control by adding TRP-specific parameter sets alongside the existing spatial relation concepts. This multi-dimensional approach allows the system to differentiate between spatial relations and power control parameters, enabling independent optimization of each aspect for multiple TRPs.
2Reliability
If per-TRP power control is implemented, then transmission reliability is improved, but configuration overhead increases
Solution Approach 1:
The patent creates a universal power control parameter set structure that can be applied to any TRP. The same parameter set template (including pathloss reference signal, P0-PUCCH, and closed-loop index) serves multiple TRPs, reducing the need for entirely separate configurations for each TRP and thereby reducing overall configuration overhead.
Solution Approach 2:
The patent uses a copying mechanism where a standardized power control parameter set structure is replicated for each TRP. Instead of creating entirely new parameter structures, the system copies the essential elements (pathloss reference signal ID, P0-PUCCH value, closed-loop index) and associates them with specific TRPs, reducing configuration complexity while maintaining per-TRP control capability.
Data Source
AI summary
A method, system and apparatus are disclosed for physical uplink control channel (PUCCH) power control towards multiple transmission and reception points (TRPs). According to one aspect, a method in a network node includes configuring a wireless device (WD) with a list of at least two power control parameter sets for power control of a PUCCH applicable to at least one of at least one PUCCH resource and at least one group of PUCCH resources. The method also includes transmitting a medium access control (MAC) control element (CE) to the WD to activate at least one power control parameter set from the list of power control parameter sets applicable to at least one of (1) one PUCCH resource, (2) each one of multiple PUCCH resources, and (3) multiple groups of PUCCH resources.