Uplink Resource Reporting for MPE-Limited 5G Power Control
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Solution Overview
Problem
5G NR systems operating at high frequencies face challenges in complying with maximum permissible exposure (MPE) regulations, leading to unnecessary uplink transmission power reductions that can cause radio link failures and reduce throughput.
Innovation Solution
A mechanism for user equipment (UE) to identify and communicate specific uplink resources impacted or not impacted by MPE events to the network using identifiers like SSB and CSI-RS, with reactive and proactive reporting, allowing the network to adjust scheduling and avoid unnecessary power reductions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If uplink power is reduced for PUCCH to save interference, then interference to other channels is reduced, but PUCCH transmission reliability deteriorates
Solution Approach 1:
The patent changes the power parameter by applying different power reduction values (first power reduction value for PUCCH, second power reduction value for PUSCH) based on channel priority and interference conditions. This allows selective power adjustment that reduces overall interference while maintaining PUCCH transmission reliability through differential power control.
Solution Approach 2:
The patent applies different power reduction strategies to different channels (PUCCH vs PUSCH) based on their local requirements. PUCCH receives preferential power allocation when needed, while PUSCH can be reduced more aggressively, creating localized quality adjustments that resolve the contradiction between overall interference reduction and specific channel reliability.
2Object-generated harmful factors
If uplink power is reduced overall to manage interference, then network interference is controlled, but uplink transmission performance deteriorates
Solution Approach 1:
The patent dynamically adjusts power parameters based on channel priority, signal quality metrics, and interference conditions. By changing power allocation parameters selectively rather than uniformly, the system controls network interference while preserving essential uplink transmission performance for high-priority channels.
Solution Approach 2:
The patent implements dynamic power control where power reduction values are adjusted in real-time based on current channel conditions, signal quality, and interference levels. This dynamic approach allows the system to adapt power allocation to maintain transmission performance when needed while controlling interference when conditions permit.
Data Source
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AI summary
There is provided an apparatus for a terminal, apparatus for a terminal, the apparatus being caused to determine that at least one uplink resource is associated with a reduced uplink transmission power; and transmit an identification of the at least one uplink resource to a network apparatus.