eRedCap BWP Configuration for Sub-Band Full Duplex Availability
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently indicating the availability of sub-slots in a sub-band full duplex (SBFD) slot, which affects communication performance and resource utilization.
Innovation Solution
The implementation of an enhanced reduced capability (eRedCap) downlink and uplink bandwidth part (BWP) configuration that includes a bit indicating the availability of a sub-band in the SBFD slot, allowing user equipment (UE) and network nodes to perform communications based on this configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If sub-band full duplex (SBFD) slot is used for simultaneous downlink and uplink communications, then spectral efficiency and resource utilization are improved, but interference management and resource allocation complexity increase
Solution Approach 1:
The patent divides the frequency band into multiple sub-bands within the SBFD slot, allowing different sub-bands to be allocated for downlink and uplink communications independently. This segmentation enables fine-grained resource control, reducing interference between simultaneous transmissions while maintaining high spectral efficiency. The network can selectively activate sub-bands based on traffic demands and interference conditions.
Solution Approach 2:
The patent introduces dynamic sub-band availability indication through enhanced BWP configuration, allowing the network to flexibly adjust which sub-bands are available for downlink or uplink in each SBFD slot. This dynamic adaptation enables the system to optimize resource allocation in real-time based on channel conditions, traffic patterns, and interference levels, resolving the complexity issue while maintaining productivity.
2Measurement precision
If enhanced RedCap BWP configuration with sub-band availability bit is implemented, then resource allocation precision and communication efficiency are improved, but configuration overhead and processing requirements increase
Solution Approach 1:
The patent extracts the sub-band availability information as a separate bit field within the enhanced BWP configuration. This dedicated indication mechanism provides precise resource allocation control by explicitly specifying which sub-bands are available for downlink or uplink, while keeping the configuration structure modular and manageable. The extraction approach allows precise control without overwhelming the entire configuration framework.
Solution Approach 2:
The patent applies local quality enhancement by adding sub-band specific availability indicators only where needed in the BWP configuration, rather than uniformly increasing complexity across all configuration parameters. This targeted approach provides high precision resource allocation for critical sub-bands while maintaining simpler configurations for other parameters, balancing precision requirements with processing capabilities.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a network node, an enhanced reduced capability (eRedCap) downlink and uplink bandwidth part (BWP) configuration associated with a sub-band full duplex (SBFD) slot, wherein the eRedCap downlink and uplink BWP configuration includes a bit indicating an availability of a sub-band in the SBFD slot. The UE may perform, with the network node, a communication based at least in part on the eRedCap downlink and uplink BWP configuration. Numerous other aspects are described.