Sub-band Full-Duplex Resource Allocation for Interference Reduction
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing sub-band full-duplex operations for user equipment (UE), where UEs may be unsure whether to use uplink or downlink resources based on network entity configurations, leading to potential interference and inefficient resource allocation.
Innovation Solution
The implementation of techniques that allow UEs to interpret configuration information for sub-band full-duplex symbols or slots, enabling them to select both uplink and downlink resources based on their capabilities and the network entity's support for full-duplex or half-duplex modes, thereby optimizing resource utilization and reducing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the network entity configures both uplink and downlink resources for SBFD symbols or slots, then resource utilization efficiency is improved, but interference between uplink and downlink communications increases
Solution Approach 1:
The patent divides the frequency spectrum into multiple sub-bands and allocates different sub-bands for uplink and downlink transmissions within the same time slot. This segmentation of frequency resources allows simultaneous uplink and downlink communications while reducing interference between the two directions by spatially separating them in the frequency domain.
Solution Approach 2:
The patent applies different quality characteristics to different sub-bands by configuring specific sub-bands for uplink or downlink based on local interference conditions, channel quality, and traffic requirements. This allows the system to optimize resource allocation locally in each sub-band while maintaining overall system performance.
2Adaptability or versatility
If the UE operates in SBFD mode with both uplink and downlink resources, then communication flexibility is improved, but device complexity increases
Solution Approach 1:
The patent enables the UE to dynamically switch between different operation modes (SBFD mode with both uplink and downlink, or half-duplex mode with either uplink or downlink) based on received configuration information from the network entity. This dynamic adaptability allows the UE to flexibly adjust its operation to match network requirements while managing complexity through standardized mode switching mechanisms.
Solution Approach 2:
The patent designs the UE to support multiple communication modes (SBFD and half-duplex) within a single device framework. The UE can universally handle both uplink and downlink resources simultaneously when configured in SBFD mode, or operate in traditional half-duplex mode, providing multi-functionality without requiring separate dedicated hardware for each mode.
3Quantity of substance
If the network entity supports SBFD mode with multiple UEs, then system capacity is improved, but resource allocation complexity increases
Solution Approach 1:
The patent segments frequency resources into multiple sub-bands and can allocate different sub-bands to different UEs within the same time slot. This allows the network entity to support multiple UEs in SBFD mode simultaneously by providing each UE with dedicated frequency sub-bands for uplink and downlink, thereby increasing system capacity while managing allocation complexity through frequency division.
Solution Approach 2:
The patent introduces frequency sub-band allocation as an additional dimension for resource management beyond traditional time-division and user-division multiplexing. By allocating resources across frequency, time, and user dimensions, the system can support multiple UEs in SBFD mode with improved capacity while the network entity manages complexity through multi-dimensional resource orchestration.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a control message indicating configuration information associated with one or more sub-band full-duplex (SBFD) symbols or slots, wherein the configuration information indicates both uplink resources and downlink resources within at least one SBFD symbol or slot of the one or more SBFD symbols or slots. In some cases, the UE may select both the uplink resources and the downlink resources for the at least one SBFD symbol slot of the one or more SBFD symbols or slots based on a capability of the UE. Additionally, the UE may communicate via both the uplink resources and the downlink resources during the at least one SBFD symbol or slot of the one or more SBFD symbols or slots based on the selection.