Sub-Band Full Duplex Resource Configuration for Interference Control
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently utilizing sub-band full duplex (SBFD) resource configurations, particularly in managing uplink and downlink transmissions to optimize spectral efficiency and reduce interference.
Innovation Solution
Implementing a method and apparatus for configuring wireless communication resources using a time division duplexing pattern and transitioning to a sub-band full duplex (SBFD) format based on resource conditions, allowing flexible formats for improved resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If time division duplexing pattern is used for resource configuration, then interference between uplink and downlink is reduced, but spectral efficiency is limited due to sequential transmission
Solution Approach 1:
The patent divides the frequency band into multiple sub-bands and allows different duplexing modes in different sub-bands. Specifically, some sub-bands can operate in full duplex mode while others maintain time division duplexing, enabling simultaneous uplink and downlink transmissions in different frequency segments and improving overall spectral efficiency while controlling interference.
Solution Approach 2:
The patent applies different quality characteristics to different parts of the frequency spectrum by configuring specific sub-bands with SBFD format. This allows selective optimization where sub-bands with favorable channel conditions can use full duplex for higher efficiency, while other sub-bands maintain TDD for interference control, creating locally optimized resource allocation.
2Productivity
If sub-band full duplex format is implemented, then spectral efficiency is improved through simultaneous uplink and downlink, but interference management complexity increases
Solution Approach 1:
The patent introduces dynamic resource configuration where the network can adaptively switch between TDD and SBFD formats based on traffic conditions, channel quality, and interference levels. This dynamic adaptation allows the system to optimize spectral efficiency when conditions permit full duplex while falling back to simpler TDD configurations when interference management becomes problematic.
Solution Approach 2:
The patent changes the operational parameters of resource blocks by introducing a format indicator that specifies whether each resource block should use TDD or SBFD format. This parameter change enables flexible control over duplexing mode without requiring fundamental system architecture changes, simplifying the management of interference while maintaining spectral efficiency gains.
3Productivity
If flexible resource formats are used, then resource utilization is optimized, but configuration complexity increases
Solution Approach 1:
The patent creates a universal resource configuration framework that can handle multiple duplexing modes (TDD, full duplex, and SBFD) through a unified configuration mechanism. The same resource block structure and signaling procedures are used regardless of the duplexing mode, allowing the system to optimize resource utilization across different scenarios without requiring separate configuration systems for each mode.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a network node may output a first configuration for a set of resources, the first configuration being associated with a time division duplexing pattern, and the first configuration configuring the set of resources to one of an uplink format, a downlink format, or a flexible format. The network node may output a second configuration configuring one or more resources, of the set of resources, to a sub-band full duplex (SBFD) format based at least in part on the one or more resources satisfying a condition. Numerous other aspects are described.