Multiple Active Bandwidth Parts Operation in Mobile Communications
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Solution Overview
Problem
Current wireless communication networks face challenges in supporting multiple active bandwidth parts (BWPs) due to increased implementation complexity and hardware costs, which affect power efficiency and spectrum management, particularly in New Radio (NR) systems requiring high reliability and low latency for URLLC services.
Innovation Solution
The proposed solution involves configuring user equipment (UE) to support multiple active BWPs by receiving restrictions, activating them on the same carrier, and performing transmissions or receptions on activated BWPs, with options for restricted numbers, carriers, numerologies, and timing constraints to optimize power efficiency and reduce implementation complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple active BWPs are supported to improve spectrum management and carrier aggregation operation, then spectrum efficiency is improved, but UE implementation complexity and hardware cost increase
Solution Approach 1:
The patent segments the BWP configuration by introducing the concept of first and second BWPs with different numerologies. The first BWP uses a first numerology optimized for certain services while the second BWP uses a second numerology optimized for other services. This segmentation allows the UE to handle different service requirements separately, reducing the complexity of managing multiple active BWPs with completely different parameters.
Solution Approach 2:
The patent implements dynamic BWP switching between the first and second BWPs based on service requirements. The UE can dynamically activate either the first BWP or the second BWP depending on the current service needs, rather than maintaining both simultaneously. This dynamic approach reduces hardware complexity while maintaining spectrum efficiency.
2Adaptability or versatility
If multiple active BWPs are supported to achieve multiple numerology support for service-specific optimization, then service optimization is improved, but processing power requirements increase
Solution Approach 1:
The patent divides the numerology support into distinct segments by configuring separate first and second BWPs with different numerologies. Each BWP is optimized for specific service types (e.g., URLLC vs. eMBB), allowing the UE to process different numerologies in separate, dedicated contexts rather than managing all numerologies within a single complex processing framework.
Solution Approach 2:
Instead of requiring the UE to fully support multiple numerologies simultaneously with complete processing capabilities, the patent enables partial support by allowing the UE to activate only the necessary BWP for current service needs. This partial action approach reduces processing power requirements while maintaining the capability to support multiple numerologies when needed.
3Productivity
If multiple active BWPs are supported to improve frequency-domain resource assignment, then spectrum management is improved, but UE power consumption increases
Solution Approach 1:
The patent implements dynamic switching between the first and second BWPs based on current service requirements. The UE can dynamically activate only the necessary BWP for ongoing communications, allowing the RF transceiver to operate at optimized power levels for each numerology rather than maintaining higher power consumption to support multiple simultaneous BWPs.
Solution Approach 2:
The patent changes the operating parameters by configuring different numerologies for different BWPs, which allows the UE to optimize its power consumption for each specific service type. By adjusting the numerology parameters (subcarrier spacing, symbol length) according to service needs, the system achieves efficient frequency-domain resource assignment while minimizing unnecessary power consumption.
Data Source
AI summary
Various solutions for multiple active bandwidth parts (BWPs) operation with respect to user equipment and network apparatus in mobile communications are described. An apparatus may receive a configuration of a plurality of BWPs. The apparatus may determine whether a restriction is configured. The apparatus may activate the plurality of BWPs on a same carrier according to the restriction. The apparatus may perform a transmission or reception on at least one of a plurality of activated BWPs.