Open-Loop Power Control for Mixed DCI Format Ambiguity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face ambiguity in determining open-loop power control parameters for mixed downlink control information formats, particularly when different DCI formats have varying configurations of SRI fields, leading to unclear power level indications for UEs handling mixed traffic types like eMBB and URLLC.
Innovation Solution
The proposed solution involves resolving ambiguity by configuring UEs to use a preconfigured rule, such as the lowest-indexed open loop power level, or ensuring DCI formats without SRI fields use specific power parameter sets, thereby clarifying power control for UEs with mixed traffic types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple DCI formats with different SRI field configurations are used to support mixed traffic types, then the system can handle both eMBB and URLLC traffic, but ambiguity arises in determining open-loop power control parameters
Solution Approach 1:
The patent introduces a preconfigured rule as an intermediary mechanism to resolve the ambiguity between different DCI formats. When a UE receives a DCI with an SRI field indicating multiple open-loop power levels, the preconfigured rule (such as selecting the lowest-indexed power level) acts as a mediator to determine the correct power level, eliminating the information loss and ambiguity without requiring additional signaling.
2Reliability
If DCI formats without SRI fields use specific power parameter sets, then power control is clarified for URLLC traffic, but device complexity increases due to multiple configuration requirements
Solution Approach 1:
The patent applies preliminary action by configuring UEs with preconfigured rules and power parameter sets before actual communication occurs. The base station configures the UE with multiple open-loop power levels and associated power parameter sets in advance, so that when a DCI is received without an SRI field, the UE can immediately apply the preconfigured rule (e.g., selecting the lowest-indexed power level) without needing complex real-time decision-making, thus reducing operational complexity while maintaining reliability.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Various aspects of the present disclosure generally relate to wireless communication. Some techniques and apparatuses described herein provide resolution of ambiguity with regard to determination of an open loop power control value (e.g., a P0 value) for a user equipment that is configured with at least two downlink control information formats, of which one is configured with a sounding reference signal resource indicator (SRI) field and another is not configured with an SRI field. Numerous other aspects are provided.