PUCCH Resource Block Offsets for Subband Full Duplex Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems, particularly in subband full duplex (SBFD) mode, there is a challenge in efficiently transmitting feedback on a physical uplink control channel (PUCCH) resource due to interference and resource allocation inefficiencies, leading to degraded communication quality and resource wastage.
Innovation Solution
The method involves obtaining subband physical resource block (PRB) offsets to transmit feedback in specific PRBs for frequency hops within an uplink subband, based on indicated or determined offsets, allowing for optimized PUCCH resource utilization and interference reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If feedback is transmitted in the uplink band of an SBFD symbol using conventional resource allocation, then the PUCCH resource can be easily identified, but interference occurs and resource allocation becomes inefficient
Solution Approach 1:
The patent applies local quality by configuring specific PRB offsets for PUCCH resources in the uplink band of SBFD symbols. Instead of using uniform resource allocation across all symbols, the network entity configures dedicated PRB offset values (e.g., offsetA and offsetB) that are specifically tailored for SBFD symbols, creating localized resource quality that avoids interference while ensuring reliable feedback transmission.
Solution Approach 2:
The patent changes the parameter of PRB offset configuration specifically for SBFD symbols. The network entity configures different PRB offset parameters (offsetA, offsetB) for PUCCH resources when the symbol type is identified as SBFD, thereby adapting the resource allocation parameters to the specific characteristics of SBFD symbols and eliminating interference issues.
2Device complexity
If conventional PUCCH resource allocation is used in SBFD mode, then resource configuration is simple, but resource wastage occurs and communication quality degrades
Solution Approach 1:
The patent implements dynamic resource allocation by making PUCCH resource configuration dependent on symbol type. The network entity identifies whether a symbol is an SBFD symbol and dynamically configures appropriate PRB offsets (offsetA, offsetB) based on this identification. This dynamic approach optimizes resource utilization for SBFD symbols while maintaining efficient communication, rather than using static conventional allocation.
Solution Approach 2:
The patent segments the PUCCH resource configuration into different types based on symbol characteristics. Separate PRB offset parameters (offsetA for first PUCCH resources, offsetB for second PUCCH resources) are configured specifically for SBFD symbols, creating segmented resource allocation that optimizes each segment's performance and avoids the inefficiencies of unified allocation.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive downlink control information (DCI) that schedules a downlink message for initial access communication and that indicates a common physical uplink control channel (PUCCH) resource for feedback for the downlink message. The UE may obtain one or more resource subband physical block (PRB) offsets for transmitting the feedback in an uplink subband of a subband full duplex symbol associated with the common PUCCH resource. The UE may transmit the feedback in a first PRB for a first frequency hop in the uplink subband and in a second PRB for a second frequency hop in the uplink subband, based at least in part on the one or more subband PRB offsets. Numerous other aspects are described.