Three-Band EN-DC Uplink MSD for Downlink Sensitivity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The harmonics and intermodulation distortion components generated by uplink signals in mobile devices can cause a failure to meet the reference sensitivity power level for downlink signals in 3GPP LTE and NR systems, leading to unsatisfactory communication performance.
Innovation Solution
A wireless device configured with Evolved Universal Terrestrial Radio Access (E-UTRA) - New Radio (NR) Dual Connectivity (EN-DC) that uses three bands, with pre-configured Maximum Sensitivity Degradation (MSD) values for specific band combinations to manage uplink and downlink signals effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If dual uplink transmission is performed in EN-DC with three bands, then communication capacity and service quality are improved, but harmonics and intermodulation distortion components are generated that degrade downlink signal sensitivity
Solution Approach 1:
The patent applies parameter changes by introducing MSD (Maximum Sensitivity Degradation) values that quantify the sensitivity degradation for each specific band combination. These parameters allow the system to adjust and manage the trade-off between dual uplink transmission benefits and sensitivity degradation, enabling optimized configuration for different band scenarios (e.g., n28-n77-n78, n3-n77-n78 combinations) while maintaining communication performance within acceptable limits.
2Reliability
If MSD values are pre-configured for multiple band combinations, then reference sensitivity is maintained through dual uplink transmission, but device complexity increases
Solution Approach 1:
The patent implements preliminary action by pre-configuring MSD values for all anticipated band combinations before actual operation. This allows the device to have ready-made sensitivity degradation parameters for various scenarios (n28-n77-n78, n3-n77-n78, etc.), eliminating the need for complex real-time calculations and enabling faster, more reliable sensitivity management when dual uplink transmission is activated.
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