VRB-to-PRB Interleaving Across Overlapping Full Duplex Subbands
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Solution Overview
Problem
Existing VRB-to-PRB mapping in full duplex networks can result in RBs being mapped into conflicting subbands, negatively impacting communication efficiency and spectrum utilization due to overlapping frequency allocations.
Innovation Solution
A configuration for VRB-to-PRB interleaving is introduced, which separates RBs based on available subbands and ensures they are not mapped into conflicting subbands, considering the overlap between downlink and uplink slots.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If VRB-to-PRB mapping is performed without considering subband overlap, then resource allocation is simplified, but communication efficiency deteriorates due to RBs being mapped into conflicting subbands
Solution Approach 1:
The patent segments the frequency spectrum into distinct subbands (downlink subbands and uplink subbands) and performs VRB-to-PRB mapping separately for each subband. This segmentation prevents RBs from being mapped into conflicting subbands, thereby improving communication efficiency while managing allocation complexity through structured division of the frequency domain.
Solution Approach 2:
The patent applies local quality by adapting the VRB-to-PRB mapping strategy to specific subband characteristics. Different mapping approaches are used depending on whether the RBs fall within downlink subbands, uplink subbands, or overlapping regions, ensuring optimal resource allocation for each local frequency region while avoiding conflicts.
2Quantity of substance
If VRB-to-PRB mapping is performed without subband consideration, then spectrum utilization is reduced, but mapping complexity is lower
Solution Approach 1:
The frequency spectrum is segmented into downlink subbands and uplink subbands, with separate VRB-to-PRB mapping performed for each segment. This segmentation maximizes spectrum utilization by ensuring that RBs are allocated within their designated subbands, preventing waste from conflicting allocations while organizing the mapping process into manageable segments.
Solution Approach 2:
The patent performs preliminary identification of subband boundaries and characteristics before executing the VRB-to-PRB mapping. By pre-determining which subbands are available for downlink and uplink transmissions, the system optimizes spectrum utilization in advance, allowing efficient resource allocation without excessive complexity during the actual mapping execution.
3Loss of time
If conventional VRB-to-PRB mapping is used, then latency is increased due to conflicts, but implementation is simpler
Solution Approach 1:
The patent segments the resource block mapping process according to subband boundaries, performing VRB-to-PRB mapping separately for downlink and uplink subbands. This segmentation eliminates conflicts that cause retransmissions and latency, while the modular segmented approach keeps implementation complexity manageable through structured processing.
Solution Approach 2:
The patent changes the mapping parameters dynamically based on subband type and slot configuration. By adapting the VRB-to-PRB mapping parameters to match the specific subband characteristics and full duplex slot format, the system reduces latency caused by conflicts while maintaining implementation feasibility through parameter-based control rather than complex structural changes.
Data Source
AI summary
Method and apparatus for slot type dependent VRB-to-PRB interleaving. The apparatus allocates a set of resources for communication with a UE, the set of resources comprising a plurality of RBs. The apparatus maps a first subset of the set of resources and a second subset of the set of resources within at least a first subband within a first bandwidth part (BWP), wherein the first subset and the second subset are interleaved within the first subband based at least on an overlap between the first BWP and at least the first subband. A first RB of the first BWP corresponds to a first RB of the first subset in response to the first BWP having a starting position within the first subband and having an ending position within a second subband, wherein the first subband and the second subband are different.