Partial PRG Precoding for Subband Full Duplex Edge Reliability
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in handling partial precoding resource block groups (PRGs) at subband edges and non-contiguous PRBs across subbands in subband full duplex (SBFD) configurations, leading to missed or inefficient communications due to lack of rules for precoding in these scenarios.
Innovation Solution
Implementing partial PRG rules and precoding rules for UE and network nodes to handle communications in partial PRGs and non-contiguous PRBs, allowing efficient communication by dropping or refraining from communications that do not meet certain conditions, such as minimum PRB thresholds or wideband configurations, and applying consistent precoding across subsets of PRBs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If subband full duplex configurations are implemented to improve spectral efficiency, then communication capacity increases, but handling partial PRGs at subband edges becomes complex and unreliable
Solution Approach 1:
The patent segments the frequency spectrum into subbands with designated downlink and uplink portions, allowing independent handling of each subband. This segmentation enables the system to manage partial PRGs at subband edges by treating them as distinct entities with specific precoding rules, rather than attempting to handle them uniformly across the entire bandwidth, thereby improving reliability while maintaining overall communication capacity.
Solution Approach 2:
The patent applies different precoding rules to different regions of the frequency spectrum. Specifically, it implements localized precoding for partial PRGs at subband edges versus standard precoding for complete PRGs in the middle of subbands. This local quality approach ensures that edge cases receive specialized handling, improving communication reliability in these problematic regions without sacrificing the productivity gains from SBFD configurations.
2Productivity
If non-contiguous PRBs are allocated across subbands to improve resource utilization, then spectral efficiency increases, but precoding consistency becomes difficult to maintain
Solution Approach 1:
The patent establishes precoding rules in advance for different PRG scenarios before actual data transmission occurs. By pre-defining how to handle contiguous and non-contiguous PRBs across subband boundaries, the system eliminates the need for complex real-time precoding decisions, thereby maintaining precoding consistency even when allocating non-contiguous PRBs for improved spectral efficiency.
Solution Approach 2:
The patent creates a universal precoding framework that handles both contiguous and non-contiguous PRB allocations through a unified set of rules. This multi-functional approach allows the same precoding mechanism to serve multiple purposes: maintaining consistency for contiguous allocations while also managing the complexity of non-contiguous allocations across subband edges, thus supporting flexible resource utilization without proportionally increasing device complexity.
3Reliability
If partial PRG rules are implemented to handle edge cases, then communication reliability improves, but system complexity increases due to additional rule sets
Solution Approach 1:
The patent applies partial PRG rules selectively only to the specific case of partial PRGs at subband edges, rather than creating comprehensive rule sets for all possible scenarios. This partial action approach focuses complexity only where needed (at subband edges) while leaving the majority of PRG handling to standard rules, thereby improving reliability for edge cases without proportionally increasing overall system complexity.
Solution Approach 2:
Instead of creating complex exception handling rules for partial PRGs, the patent inverts the approach by establishing default precoding behavior and then defining minimal, specific adjustments needed at subband edges. This inversion reduces complexity by treating edge cases as modifications to the standard rule rather than requiring entirely separate rule sets, thereby maintaining improved reliability with reduced system complexity.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a resource allocation that includes a set of physical resource blocks (PRBs) for a communication to be communicated in at least one precoding resource block group (PRG), the at least one PRG comprising a partial PRG associated with an edge of a subband of a subband full duplex (SBFD) configuration, wherein the communication includes a demodulation reference signal (DMRS) and a physical downlink data channel signal or a physical uplink data channel signal. The UE may communicate the communication based on a partial PRG rule associated with the partial PRG. Numerous other aspects are described.