Coupled BWP Switching for 5G NR Subband Full-Duplex
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Solution Overview
Problem
Existing wireless communication systems, particularly 5G NR, face challenges in optimizing bandwidth part (BWP) operations for improved efficiency and flexibility in subband full-duplex (SBFD) resource utilization.
Innovation Solution
The implementation of an apparatus and method that allows switching between non-subband full-duplex (non-SBFD) and SBFD resources by transitioning from a first BWP pair to a second BWP pair, where the second BWP pair occupies a greater channel bandwidth and includes a decoupled uplink and downlink BWP, enhancing communication efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the system uses traditional non-SBFD BWP pairs for communication, then the device complexity is lower and operation is simpler, but the bandwidth utilization and communication efficiency are limited
Solution Approach 1:
The patent implements dynamic BWP switching mechanisms that allow the system to transition between non-SBFD and SBFD BWP pairs based on communication conditions. The apparatus dynamically selects and switches between different BWP configurations to optimize performance while managing complexity through adaptive control rather than static complex structures.
Solution Approach 2:
The system changes key parameters including bandwidth occupation (greater portion for SBFD), BWP pairing structure (decoupled uplink/downlink for SBFD), and operational mode (switching between non-SBFD and SBFD). These parameter changes enable improved communication efficiency while the switching mechanism manages the complexity burden.
2Quantity of substance
If the system switches to SBFD resources with larger BWP pairs, then the bandwidth utilization improves, but the difficulty of detecting and measuring resources increases
Solution Approach 1:
The patent segments the large SBFD bandwidth into structured BWP pairs with defined configurations. By dividing the total bandwidth into manageable BWP units with specific parameters (frequency locations, bandwidth sizes, uplink/downlink assignments), the system makes resource detection and measurement tractable despite the overall large bandwidth utilization.
Solution Approach 2:
The BWP pair structure serves multiple functions simultaneously: it defines bandwidth allocation, specifies uplink/downlink division, enables SBFD operation, and provides a standardized unit for resource detection. This multi-functionality reduces the overall complexity of detecting and measuring resources in the expanded bandwidth.
3Adaptability or versatility
If the system implements decoupled uplink and downlink BWP in SBFD mode, then the adaptability and resource flexibility improve, but the device complexity increases
Solution Approach 1:
The patent segments the uplink and downlink resources into separate, independently configurable BWP components within the SBFD pair. This segmentation allows flexible assignment of different bandwidths, frequency locations, and configurations to uplink and downlink independently, achieving high adaptability while keeping each segment manageable in complexity.
Solution Approach 2:
The system dynamically configures and switches between different decoupled BWP pair configurations based on communication needs. The adaptability is achieved through dynamic reconfiguration capabilities rather than static complex structures, allowing the system to optimize resource flexibility while managing configuration complexity through controlled adaptability.
Data Source
AI summary
Aspects of the disclosure are directed to method and techniques for wireless communications between wireless nodes via subband full-duplex (SBFD) resources and non-SBFD resources. In some examples, the wireless nodes may communicate using coupled bandwidth parts (BWPs) of varying bandwidth to accommodate downlink and uplink communications during SBFD resources.