Uplink Scheduling Frequency Range Configuration for UE Power Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in optimizing uplink transmission by accurately determining maximum power reduction (MPR) requirements and resource allocation due to signal distortion caused by power amplifier non-linearity, particularly in user equipment (UE), which is influenced by factors like waveform, modulation order, and power class.
Innovation Solution
A user equipment (UE) and base station system that configures and utilizes an uplink scheduling frequency range with a reference location, allowing for the determination of MPR and resource allocation based on this range, ensuring compliance with emission requirements and optimizing power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the UE transmits at maximum power to improve uplink coverage and signal strength, then transmission power is increased, but signal distortion increases due to power amplifier non-linearity
Solution Approach 1:
The patent changes the parameter of transmission power by introducing MPR (Maximum Power Reduction) values that allow the UE to transmit at reduced power levels when signal distortion would occur. The base station configures MPR parameters based on UE capabilities, power class, and transmission conditions, enabling dynamic adjustment of transmission power to avoid non-linear distortion while maintaining adequate coverage.
2Object-generated harmful factors
If the UE reduces transmission power to avoid signal distortion, then signal quality improves, but uplink coverage and transmission reliability deteriorate
Solution Approach 1:
The patent implements dynamic power adjustment through MPR configuration where the transmission power is not fixed but adapts to changing conditions. The base station can configure different MPR values based on current transmission requirements, UE capabilities, and channel conditions, allowing the system to optimize between avoiding distortion and maintaining reliability in real-time.
Solution Approach 2:
The system incorporates feedback mechanisms where the base station receives information about UE power class, capabilities, and transmission conditions, then configures appropriate MPR parameters. This closed-loop approach ensures that power reduction decisions are based on actual system state, maintaining reliability while avoiding distortion.
3Object-generated harmful factors
If the base station configures strict emission requirements to meet regulatory limits, then emission compliance is improved, but transmission power flexibility is reduced
Solution Approach 1:
The patent segments the power control mechanism into multiple components: UE power class definitions, MPR configuration parameters, emission requirements, and capability reporting. This segmentation allows each component to be optimized independently while working together as a cohesive system, providing both emission compliance and power flexibility.
Solution Approach 2:
The system dynamically adjusts power allocation based on configured MPR parameters and actual transmission conditions. The base station can modify MPR configurations to balance emission compliance with transmission requirements, allowing flexible adaptation to different scenarios while maintaining regulatory compliance.
4Measurement precision
If the UE reports detailed capability information to enable optimized power control, then power allocation accuracy is improved, but signaling overhead increases
Solution Approach 1:
The patent utilizes existing universal signaling mechanisms and capability reporting frameworks already present in the communication system. By leveraging these established multi-functional signaling paths, the system obtains detailed UE capability information for power control without requiring entirely new signaling protocols, thus minimizing additional overhead.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
Example embodiments relate to configuring an uplink scheduling frequency range (SFR) for a user equipment. The user equipment may comprise: means for receiving, from a base station, a configuration of an uplink SFR, wherein the uplink SFR is associated with a reference location or a reference range in frequency domain, and wherein the uplink SFR is confined within a channel bandwidth; means for determining at least one maximum power reduction requirement based on the configuration of the uplink SFR; means for transmitting, to the base station, an uplink signal within the uplink SFR in compliance with the at least one maximum power reduction requirement; and means for switching between transmission of the uplink signal within the uplink SFR and reception of a downlink signal within the channel bandwidth, wherein the switching comprises adaptation of at least one parameter of baseband processing of the uplink signal or downlink signal.