gNodeB Operation With Overlapping BWPs Under User Equipment Limits
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face limitations in bandwidth allocation, uplink and downlink restrictions, and CSI-RS provision, particularly in 5G networks, which affect the efficient utilization of radio resources and user equipment performance.
Innovation Solution
Implementing flexible BWP configurations with overlapping and non-overlapping bandwidth parts, coupled with link adaptation and power control, and optimizing CSI-RS management to enhance system capacity and user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single bandwidth is allocated to a UE, then the configuration is simple, but the radio resource utilization is not optimal
Solution Approach 1:
The total bandwidth is segmented into multiple Bandwidth Parts (BWPs), each with different parameters optimized for specific service requirements. This allows the system to allocate appropriate bandwidth segments to different UEs or different services, improving radio resource utilization while maintaining manageable configuration complexity through structured segmentation.
Solution Approach 2:
The system dynamically adapts bandwidth allocation by configuring multiple BWPs with different parameters and switching between them based on service requirements. This dynamic adaptation enables optimal radio resource utilization for varying traffic conditions while keeping the base configuration systematic and manageable.
2Adaptability or versatility
If multiple BWPs are configured for different service requirements, then the system can meet diverse service needs, but the device complexity increases
Solution Approach 1:
Different BWPs are configured with locally optimized parameters tailored to specific service requirements (e.g., eMBB, uRLLC). Each BWP has customized parameters such as bandwidth, numerology, and MIMO configuration appropriate for its intended service, achieving high adaptability while maintaining clear structural organization that manages complexity.
Solution Approach 2:
The BWP framework provides a universal mechanism that can serve multiple service types (eMBB, uRLLC, etc.) through a common configuration structure. This multi-functional approach allows the system to handle diverse service requirements using a unified methodology, improving versatility without proportionally increasing complexity.
3Reliability
If the uplink bandwidth is restricted to 40 MHz due to transmit restrictions, then the device can operate within hardware limits, but the system capacity is reduced
Solution Approach 1:
The system compensates for uplink bandwidth restrictions by utilizing the frequency dimension more effectively through carrier aggregation and by optimizing the frequency domain structure of BWPs. This dimensional approach allows the system to maintain hardware reliability while improving overall system capacity through sophisticated frequency resource management.
Data Source
AI summary
A first referred to as Approach A has three 40 MHz BWPs. The first BWP of the BWP configuration 2, approach A referred to as “BWP #1” resides in the top of the 100 MHz bandwidth. A second approach referred to as “BWP #2” resides in the middle portion of the 100 MHz band. A third approach referred to as “BWP #3” resides in the bottom portion of the 100 MHz band. BWP configuration 2, approach A allows overlaps between the BWP #1 and BWP #2 and also between BWP #2 and BWP #3. These overlaps can be leveraged to allow a diversity of users to be scheduled across BWPs #1 and #2 and between BWPs #2 and #3. In some embodiments, BWP #2 aligns with BWP Configuration 1 users.