Multi-Band BWP Configuration for Virtual Cell Spectrum Fragmentation
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Solution Overview
Problem
Existing wireless communications systems face challenges in improving signal transmission and reception in complex and dynamic environments, including signal attenuation, inefficient use of frequency resources, and limited device connectivity, necessitating improved techniques for configuring bandwidth parts (BWPs) to enhance performance and coverage.
Innovation Solution
The implementation of virtual cells with multiple non-contiguous frequency bands and defined parameters, such as frequency range, gap, and numerology, to configure uplink and downlink BWPs, allowing for improved frequency resource utilization and flexible BWP associations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional single-frequency-band cells are used, then device connectivity is simplified, but frequency resource utilization is inefficient and coverage is limited
Solution Approach 1:
The patent segments the frequency spectrum into multiple non-contiguous frequency bands, each configured as a separate BWP. This allows the system to utilize scattered frequency resources efficiently by assigning different BWPs to different UEs based on channel conditions and service requirements, thereby improving frequency resource utilization without requiring a single continuous wideband allocation
Solution Approach 2:
The patent implements dynamic BWP configuration where BWPs can be activated, deactivated, and switched based on real-time network conditions, UE capabilities, and service requirements. This dynamic management allows flexible adaptation to changing environments while maintaining efficient resource utilization across multiple frequency bands
2Reliability
If multiple non-contiguous frequency bands are configured for virtual cells, then coverage and signal transmission are improved, but configuration and processing complexity increases
Solution Approach 1:
The patent divides the virtual cell into multiple BWPs corresponding to different frequency bands, allowing independent configuration and management of each band. This segmentation enables the system to exploit frequency diversity by selecting appropriate BWPs based on channel conditions, thereby improving signal transmission reliability while keeping individual BWP configurations manageable
Solution Approach 2:
The patent introduces a BWP configuration mechanism that acts as an intermediary layer between the physical frequency resources and the logical cell structure. This intermediary enables flexible mapping of multiple non-contiguous frequency bands to a unified virtual cell concept, simplifying the overall configuration by providing a standardized interface for managing complex multi-band resources
3Productivity
If contiguous frequency resources are allocated, then processing is simplified, but frequency resource utilization efficiency decreases in fragmented spectrum
Solution Approach 1:
The patent segments frequency resources into discrete BWP units that can be independently allocated and configured. Each BWP represents a contiguous subset of frequency resources within a specific band, maintaining processing simplicity at the BWP level while enabling efficient utilization of fragmented spectrum through selective combination of multiple BWPs across different bands
Solution Approach 2:
The patent extends the traditional one-dimensional contiguous frequency allocation by introducing a multi-dimensional structure where BWPs from different frequency bands can be aggregated. This allows the system to achieve efficient resource utilization by operating across multiple frequency dimensions while maintaining contiguous resource allocation within each BWP for simplified processing
Data Source
AI summary
Certain aspects of the present disclosure provide a method for wireless communications at a user equipment (UE). The UE may receive one or more configurations of one or more bandwidth parts (BWPs) of a virtual cell. The virtual cell may be configured with a plurality of frequency bands and each BWP may indicate contiguous frequency resources in the plurality of frequency bands. The UE may process one or more downlink and uplink transmissions, in accordance with the received configurations.