UE Transmit Power Adjustment for Overlapping Carrier Numerologies
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Solution Overview
Problem
In 5G NR wireless communications, when multiple carriers configured for a UE support different numerologies, existing power adjustment methods fail to ensure sufficient transmit power for all carriers due to differences in scheduling times and symbol lengths, leading to poor transmission reliability for high-priority services.
Innovation Solution
A service transmission method where the UE adjusts transmit power on one carrier using a configured power and reduces power on another carrier to ensure sufficient power for high-priority services, with power adjustment locations overlapping in time resources, allowing flexible configuration based on service requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE assigns guaranteed power to each carrier and reduces power on low-priority carriers, then high-priority services can maintain sufficient transmit power, but suddenly scheduled high-priority services on carriers with different numerologies cannot obtain enough power when time resources overlap
Solution Approach 1:
The patent implements dynamic power adjustment by introducing a power adjustment location mechanism that can be flexibly configured based on service requirements. When a suddenly scheduled high-priority service is detected, the system dynamically adjusts the power allocation at specific adjustment locations on previously scheduled carriers, allowing the suddenly scheduled carrier to obtain sufficient power while maintaining adaptability to different numerologies and scheduling scenarios
Solution Approach 2:
The patent changes the power parameter dynamically by introducing power adjustment locations where the transmit power can be modified. The base station configures multiple power adjustment locations with different adjustment values, allowing the UE to adjust power at specific time-frequency resources based on service priority and numerology differences, thereby resolving the contradiction between reliability and adaptability
2Ease of manufacture
If the UE reduces transmit power on an entire slot of a carrier to ensure power for early-transmitted services, then power allocation is simplified, but this causes excessive power reduction when services are scheduled at different times
Solution Approach 1:
The patent segments the time-frequency resource into multiple power adjustment locations instead of treating the entire slot as a single adjustment unit. Each power adjustment location can be independently configured with specific adjustment values, allowing fine-grained power control that reduces power only where necessary rather than reducing power across the entire slot, thereby minimizing energy loss while maintaining implementation simplicity
Solution Approach 2:
The patent applies local quality by allowing different power adjustment values at different power adjustment locations. Instead of uniform power reduction across the entire slot, the system applies targeted power adjustments only at specific locations where services are actually transmitted, ensuring power is reduced locally where needed while preserving power in other regions, thus reducing overall power loss
Data Source
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AI summary
Embodiments of this application provide a service transmission method, a device, and a system, and relate to the communications field. In a scenario in which a plurality of carriers configured for same UE support different numerologies, a power on a carrier is adjusted, to ensure that a high-priority carrier has an enough transmit power. The method specifically includes: sending, by UE, a first signal on a first symbol set on a first carrier by using a first transmit power; and sending, by the UE, a second signal on a second symbol set on a second carrier by using a second transmit power. A time resource on the first symbol set overlaps with a time resource on the second symbol set. The first transmit power is a transmit power configured or indicated by a first base station. The second transmit power is less than or equal to a transmit power configured or indicated by a second base station. This application is used for power control during service transmission.