Carrier Aggregation Sensitivity Management via MSD Parameters
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Solution Overview
Problem
Current 5G mobile communication systems face challenges in achieving high reliability and low latency, particularly in scenarios requiring ultra-reliable and low-latency communications (URLLC), due to limitations in carrier aggregation configurations and self-interference issues affecting reference sensitivity in multi-band operations.
Innovation Solution
A device and method for wireless communication systems that utilize carrier aggregation across multiple E-UTRA operating bands, specifically configuring transceivers to transmit uplink signals and receive downlink signals across multiple bands, including bands 2, 13, 48, and 66, while applying pre-configured Maximum Sensitivity Degradation (MSD) values to manage intermodulation distortion and maintain reference sensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If carrier aggregation is configured across multiple E-UTRA operating bands (including bands 2, 13, 48, and 66) to enhance communication capacity and spectral efficiency, then productivity and adaptability are improved, but self-interference increases and reference sensitivity degrades
Solution Approach 1:
The patent applies parameter changes by introducing Maximum Sensitivity Degradation (MSD) values as correction parameters. These MSD values are specific to each downlink operating band and are used to adjust the reference sensitivity level. By changing the sensitivity parameter dynamically based on the operating band configuration, the system accommodates self-interference effects while maintaining high carrier aggregation capacity across multiple bands including 2, 13, 48, and 66.
2Productivity
If multiple uplink and downlink bands are aggregated to improve spectral efficiency, then productivity increases, but reference sensitivity for signal reception degrades due to intermodulation distortion
Solution Approach 1:
The patent modifies the reference sensitivity parameter by applying band-specific Maximum Sensitivity Degradation (MSD) values. This parameter adjustment compensates for intermodulation distortion effects that occur when multiple uplink and downlink bands are aggregated. The MSD values are determined based on the specific downlink operating band configuration, allowing the system to maintain accurate signal reception sensitivity while achieving high spectral efficiency through multi-band carrier aggregation.
3Productivity
If carrier aggregation is implemented to achieve high data rates, then productivity improves, but reliability decreases due to increased self-interference in multi-band operations
Solution Approach 1:
The patent enhances communication reliability in multi-band carrier aggregation by introducing Maximum Sensitivity Degradation (MSD) correction parameters. These parameters adjust the reference sensitivity level specifically for each downlink operating band, compensating for self-interference effects that would otherwise degrade signal quality. This allows the system to maintain high data rates through carrier aggregation across bands 2, 13, 48, and 66 while ensuring reliable signal reception even in the presence of intermodulation distortion.
Data Source
AI summary
One general aspect of the present disclosure includes a device configured to operate in a wireless system. The device including: a transceiver configured with a plurality of E-UTRA operating bands; and a processor operably connectable to the transceiver. The processer may be configured to: control the transceiver to transmit an uplink signal via at least two bands among the plurality of E-UTRA operating bands; and control the transceiver to receive a downlink signal via three bands among the plurality of E-UTRA operating bands, wherein pre-configured MSD value is applied to a reference sensitivity for receiving the downlink signal based on the E-UTRA operating band 2.