Dual Power Amplifier Intra-band Non-contiguous CA MPR Control
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Solution Overview
Problem
There is a lack of standardization for Power Class 2 UE supporting NR intra-band non-contiguous CA, particularly in terms of maximum output power reduction and emission requirements, which affects the efficient transmission of uplink signals.
Innovation Solution
A device configured with dual power amplifiers and intra-band non-contiguous CA, using a first and second component carrier, determines maximum transmission power based on Maximum Power Reduction (MPR) to transmit uplink signals effectively, adhering to specific emission requirements and spectral emission masks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If intra-band non-contiguous carrier aggregation is implemented, then system capacity and spectral efficiency are improved, but maximum output power reduction requirements increase
Solution Approach 1:
The patent divides the power amplification function into two separate power amplifiers, each handling a different component carrier. This segmentation allows independent optimization of power output for each carrier, enabling the system to achieve higher total capacity while managing power reduction requirements through dual-PA architecture with separate gain control for each carrier.
2Productivity
If dual power amplifier configuration is used, then uplink transmission efficiency is improved, but device complexity increases
Solution Approach 1:
The patent implements a unified power control mechanism that manages two power amplifiers through a single control interface. The processor applies maximum power reduction calculations to both PAs simultaneously, allowing the system to achieve multi-carrier transmission efficiency while maintaining relatively simple control architecture through universal power management.
3Object-affected harmful factors
If maximum power reduction is applied, then emission compliance is improved, but transmission power decreases
Solution Approach 1:
The patent dynamically adjusts the power reduction parameter (MPR) based on the specific intra-band non-contiguous carrier aggregation configuration. By calculating MPR according to the frequency separation and bandwidth of aggregated carriers, the system achieves emission compliance while minimizing power reduction, thereby maintaining higher transmission power compared to fixed MPR approaches.
Data Source
AI summary
A disclosure of this specification provides a device configured to operate in a wireless system and to support PC2 (Power Class 2), the device comprising: a transceiver configured with intra-band non-contiguous CA, wherein the transceiver is equipped with dual power amplifier, wherein the intra-band non-contiguous CA is configured to use a first CC(component carrier) and a second CC; and a processor operably connectable to the transceiver, wherein the processer is configured to: determine maximum transmission power, based on an MPR(Maximum Power Reduction), transmit uplink signal using the intra-band non-contiguous CA, based on maximum the transmission power.