Duplex Mode Transition Coordination for Wireless Devices
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Solution Overview
Problem
Wireless communication systems face challenges in seamlessly transitioning between half-duplex and full-duplex modes within a single communication slot, leading to potential loss of phase continuity and increased signaling overhead due to symbol puncturing during mode transitions.
Innovation Solution
The implementation of a transition configuration that includes DMRS placement information, enhanced feedback mechanisms, and assistance information to coordinate the transition from half-duplex to full-duplex operations, ensuring accurate channel estimation and minimizing symbol puncturing by scheduling DMRS placement to avoid overlap with transition symbols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If symbol puncturing is used during mode transitions, then device complexity is reduced, but phase continuity is lost and signaling overhead increases
Solution Approach 1:
The patent applies preliminary action by scheduling DMRS placements in advance to avoid overlap with transition symbols. The base station determines a transition configuration that identifies symbols affected by the transition and proactively places DMRS in non-overlapping symbols before the transition occurs, preventing phase continuity loss rather than correcting it afterward
Solution Approach 2:
The patent implements feedback mechanisms where the base station receives feedback from the UE about successful or unsuccessful reception during transition periods. This feedback loop allows the system to adapt DMRS placement and transition scheduling to maintain phase continuity while managing device complexity
2Measurement precision
If DMRS placement is scheduled to avoid overlap with transition symbols, then channel estimation accuracy is improved, but signaling overhead increases
Solution Approach 1:
The patent applies dynamics by making DMRS placement flexible and adaptive rather than fixed. The base station dynamically determines DMRS positions based on the identified transition symbols and receives feedback about reception success, allowing the system to optimize channel estimation accuracy while adapting signaling overhead to actual conditions
Solution Approach 2:
The patent changes parameters by adjusting DMRS placement positions and transition scheduling based on identified overlap conditions. The base station modifies the timing and positioning parameters of DMRS to avoid transition symbols, and adjusts transition configurations based on feedback, optimizing both accuracy and overhead
3Stability of the object's composition
If transition configuration coordination is implemented, then phase continuity is maintained, but device complexity increases
Solution Approach 1:
The patent applies universality by designing a transition configuration mechanism that handles multiple functions: identifying affected symbols, scheduling DMRS placement, coordinating between base station and UE, and maintaining phase continuity. This multi-functional approach consolidates complexity into a unified framework rather than separate mechanisms for each function
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A first wireless device such as a user equipment (UE) may determine to transition from a first duplexing mode to a second duplexing mode, where a first communication associated with the first duplexing mode at least partially overlaps in time with a second communication associated with the second duplexing mode. Based on the overlap, the UE may identify transition information for coordinating the transition between the first duplexing mode and the second duplexing mode. Using the transition information, the UE may transition from the first duplexing mode to the second duplexing mode, and may communicate with a second wireless device, such as a base station, using the second duplexing mode.