Network Control of UE Sensitivity Degradation via Dynamic Power Adjustment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Carrier aggregation and dual connectivity in wireless communication face challenges with self-interference issues, particularly in band combinations where the industry-accepted maximum sensitivity degradation (MSD) values are too large, leading to inefficient use of network resources and reduced user experience due to sensitivity limitations.
Innovation Solution
The network dynamically adjusts the maximum output power of user equipment (UE) based on measured reception quality, optimizing the parameter P_α to manage self-interference and maintain receiver sensitivity above predefined thresholds, thereby enabling efficient carrier aggregation and dual connectivity configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the maximum output power of UE is increased to improve data rate and network capacity, then the self-interference increases causing sensitivity degradation
Solution Approach 1:
The patent implements dynamic adjustment of the maximum output power parameter P_α based on real-time reception quality measurements. The network monitors reception quality at the UE and dynamically configures P_α values, allowing the system to adapt between higher power (for data rate) and lower power (to reduce self-interference) based on current channel conditions and UE capability
Solution Approach 2:
The patent changes the parameter P_α (maximum output power) from a static configuration to a dynamically adjustable parameter. By modifying this key parameter based on reception quality feedback, the system optimizes the trade-off between data rate (requiring high power) and sensitivity degradation (worsened by high power self-interference)
2Object-affected harmful factors
If the maximum output power is reduced to decrease self-interference, then the reception quality deteriorates
Solution Approach 1:
The patent establishes a feedback loop where the network monitors reception quality at the UE and uses this information to adjust the maximum output power parameter P_α. This closed-loop control ensures that power reduction to decrease self-interference does not push reception quality below acceptable thresholds
Solution Approach 2:
The system dynamically adjusts P_α based on real-time reception quality measurements rather than using a fixed power level. This allows the system to maintain the lowest possible power that still achieves acceptable reception quality, minimizing self-interference while preserving reliability
3Productivity
If carrier aggregation and dual connectivity are configured to increase network capacity, then sensitivity limitations are encountered due to self-interference
Solution Approach 1:
The patent performs preliminary determination of the maximum output power parameter P_α before configuring carrier aggregation or dual connectivity. By pre-calculating the appropriate P_α value based on band combination self-interference characteristics, the system ensures that sensitivity requirements are met before enabling capacity-enhancing features
Solution Approach 2:
The patent modifies the P_α parameter to account for self-interference in carrier aggregation and dual connectivity scenarios. By adjusting this parameter based on band combination characteristics and UE reception capability, the system enables higher network capacity configurations while maintaining sensitivity above required thresholds
Data Source
AI summary
A method includes, in response to determining that a terminal connected to a network is configured to transmit using a first value of an uplink power being equal to a first value of the maximum power, the first value of the maximum power for the terminal being configured by the network, monitoring whether a reception quality of the terminal is greater than a predefined threshold, calculating a second value of the maximum power by adding a predefined increment to the first value of the maximum power in response to the reception quality of the terminal being greater than the predefined threshold, and configuring the terminal with the second value of the maximum power in response to the reception quality of the terminal being greater than the predefined threshold.