Half-Duplex UE Search Space Collision Handling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems lack effective collision handling rules for half-duplex user equipment (UE) when there is a collision condition between physical downlink control channel (PDCCH) monitoring in a search space (SS) set and uplink transmissions.
Innovation Solution
The implementation of collision handling rules by half-duplex network entities to manage actions during collision conditions, based on the type of SS set and the communication type of the uplink transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If half-duplex UE performs both PDCCH monitoring and uplink transmission in the same time slot, then communication functionality is enhanced, but collision between downlink reception and uplink transmission occurs
Solution Approach 1:
The patent segments the search space set into different types (type 0, 0A, 1, 2, 2A CSS sets) and applies different collision handling rules to each type. This segmentation allows the system to prioritize critical control channels (like paging early indicator in type 2A) over less critical ones, resolving the contradiction by enabling versatile communication while maintaining reliability through differentiated handling of collision scenarios based on SS set type classification
2Reliability
If collision handling rules are established for different SS set types, then collision resolution reliability is improved, but system complexity increases
Solution Approach 1:
The patent applies local quality by assigning different collision handling rules to different local regions (SS set types) within the search space. Each SS set type has specific collision handling characteristics - for example, type 2A CSS sets may prioritize PDCCH monitoring for paging early indicator while other types may prioritize uplink transmission. This localized differentiation improves collision resolution reliability without requiring complete system-wide complexity, as each local region handles collisions according to its specific requirements
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A network entity (e.g., a user equipment) may receive information that configures physical downlink control channel (PDCCH) monitoring in a search space set. The network entity may receive control information that indicates an uplink transmission, wherein a collision condition exists between the PDCCH monitoring in the search space set and the uplink transmission. The network entity may perform, during operation in a half-duplex mode, an action in accordance with a collision handling rule, wherein the collision handling rule is based on the collision condition and the search space set.