Subband Full-Duplex Resource Block Sets with Local Guard Bands
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face inefficiencies in signaling resource block set configurations and guard band configurations, particularly in subband full duplex operations, which can lead to interference between uplink and downlink resource block sets.
Innovation Solution
A base station configures and communicates resource block sets with specific communication directions and availability indications to user equipment (UE) using downlink control information messages, incorporating bitmaps to manage guard bands and resource block set availability, enabling efficient subband full duplex operations in licensed and unlicensed frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If resource block sets are allocated for subband full duplex operation, then communication efficiency is improved, but interference between uplink and downlink resource block sets increases
Solution Approach 1:
The bandwidth is divided into multiple resource block sets, with each resource block set independently configured for specific communication directions (uplink or downlink). This segmentation allows precise control over where guard bands are placed, isolating uplink and downlink transmissions to prevent interference while maintaining high communication efficiency across the divided resource blocks.
2Object-generated harmful factors
If guard bands are used to reduce interference between uplink and downlink resource block sets, then interference is reduced, but resource utilization efficiency deteriorates
Solution Approach 1:
Guard bands are applied locally only at the boundaries between resource block sets with different communication directions (uplink-downlink interfaces), rather than uniformly across all resource blocks. This localized application minimizes the total guard band overhead while effectively preventing interference only where direction changes occur, thereby optimizing resource utilization.
3Manufacturing precision
If detailed configurations of resource block sets and guard bands are signaled, then resource allocation precision is improved, but signaling overhead increases
Solution Approach 1:
The configuration of resource block sets and their communication directions is made dynamic through downlink control information (DCI) messages that can be updated in real-time. This allows the network to precisely allocate resources and adjust guard band positions as needed while using compact DCI signaling formats to minimize overhead compared to static, pre-configured approaches.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. The method may include identifying, for the UE, a configuration of a set of resource block sets of a radio frequency spectrum band, receiving, from a base station, a downlink control information message indicating, for each resource block set of the set of resource block sets, a communication direction for the resource block set, and communicating with the base station using one or more resource block sets of the set of resource block sets according to one or more communication directions indicated by the received downlink control information message, the one or more communication directions corresponding to respective ones of the one or more resource block sets.