MSD Value Application for EN-DC Dual Connectivity Sensitivity
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Solution Overview
Problem
The challenge is to ensure that mobile devices configured for dual connectivity in wireless systems can maintain the reference sensitivity power level for downlink signals, despite potential interference from harmonics and intermodulation distortion components caused by uplink signals.
Innovation Solution
A device is configured with Evolved Universal Terrestrial Radio Access (E-UTRA)-New Radio (NR) Dual Connectivity (EN-DC), using three bands, and a processor controls the transceiver to apply a Maximum Sensitivity Degradation (MSD) value to maintain reference sensitivity for downlink signals in various band combinations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If dual connectivity is configured to use multiple bands for enhanced communication capability, then system capacity and service quality are improved, but harmonics and intermodulation distortion occur that degrade downlink signal reception sensitivity
Solution Approach 1:
The patent applies parameter changes by introducing a Maximum Sensitivity Degradation (MSD) value that is specifically configured for different band combinations. The processor adjusts the reference sensitivity power level based on the detected band combination, allowing the system to compensate for expected interference levels in multi-band operation. This enables dual connectivity to achieve enhanced system capacity while managing the harmful effects of harmonics and intermodulation distortion through calibrated sensitivity adjustments.
2Reliability
If uplink signal transmission is performed to maintain communication functionality, then service availability is improved, but reference sensitivity power level for downlink signal reception is degraded
Solution Approach 1:
The patent implements preliminary action by pre-configuring Maximum Sensitivity Degradation (MSD) values for various band combinations before actual communication occurs. When the processor detects a specific band combination, it applies the pre-determined MSD value to adjust the reference sensitivity power level in advance, preventing interference from uplink transmissions from degrading downlink reception below the compensated threshold. This maintains service availability while preserving acceptable downlink sensitivity.
Solution Approach 2:
The patent employs feedback mechanisms where the processor detects the actual band combination being used and dynamically adjusts the reference sensitivity power level accordingly. This feedback loop ensures that the system continuously adapts to the operational context, maintaining optimal sensitivity settings despite the presence of uplink transmissions that could cause harmonics and intermodulation distortion.
3Adaptability or versatility
If multiple band combinations are supported for flexible frequency usage, then adaptability is improved, but device complexity increases due to multiple MSD configurations
Solution Approach 1:
The patent applies universality by implementing a single processor-based system that handles multiple band combinations through a unified approach. Rather than requiring separate complex circuits for each band configuration, the processor detects the active band combination and applies the appropriate pre-configured MSD value, allowing one processing unit to manage diverse frequency scenarios efficiently. This maintains adaptability across multiple band combinations while minimizing the actual device complexity.
Data Source
AI summary
A disclosure of this specification provides a device configured to operate in a wireless system, the device comprising: a transceiver configured with an Evolved Universal Terrestrial Radio Access (E-UTRA)—New Radio (NR) Dual Connectivity (EN-DC), wherein the EN-DC is configured to use three bands, a processor operably connectable to the transceiver, wherein the processer is configured to: control the transceiver to receive a downlink signal, control the transceiver to transmit an uplink signal via at least two bands among the three bands, wherein a value of Maximum Sensitivity Degradation (MSD) is applied to a reference sensitivity for receiving the downlink signal.