Uplink Channel Repetition Configuration for Phase-Coherent TDD Slot Crossing
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Solution Overview
Problem
Existing wireless communication systems face challenges in maintaining phase coherence across slot boundaries for uplink channel repetitions in Time Domain Duplexing (TDD) patterns, leading to inefficiencies and potential losses in coding gain.
Innovation Solution
The method involves receiving configuration information for a TDD slot pattern and a phase coherence configuration from a network entity, and then transmitting uplink channel repetitions across slot boundaries while maintaining phase coherence, as indicated by the configuration information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If uplink channel repetitions are transmitted across slot boundaries in TDD patterns, then transmission efficiency and reliability are improved, but phase coherence is lost across slot boundaries
Solution Approach 1:
The network entity pre-configures the UE with TDD slot pattern information and phase coherence configuration before the uplink channel repetitions are transmitted. This preliminary configuration enables the UE to anticipate slot boundary crossings and maintain phase coherence proactively throughout the transmission sequence.
Solution Approach 2:
The system implements a feedback mechanism where the network entity receives the uplink channel repetitions from the UE and can provide subsequent configuration updates or acknowledgments. This feedback loop ensures phase coherence is maintained by allowing dynamic adjustments based on transmission outcomes.
2Stability of the object's composition
If phase coherence configuration is implemented for uplink channel repetitions, then phase coherence across slot boundaries is maintained, but system complexity increases
Solution Approach 1:
The phase coherence configuration is segmented into discrete components: TDD slot pattern identification, phase coherence configuration parameters, and transmission execution. This segmentation allows each component to be independently managed and processed, reducing overall system complexity while maintaining phase coherence.
Solution Approach 2:
The UE autonomously applies the received phase coherence configuration to its uplink channel repetitions transmission without requiring continuous network intervention. This self-service approach reduces signaling overhead and system complexity by enabling the UE to independently maintain phase coherence across slot boundaries.
Data Source
AI summary
Aspects of the present disclosure relate to wireless communications, and more particularly, to maintain phase coherence for repetitions of uplink channel transmissions across slot boundaries. One example method includes receiving, from a network entity, configuration information identifying a time domain duplexing (TDD) slot pattern and a phase coherence configuration to apply to repetitions of uplink channel transmissions that cross slot boundaries for consecutive uplink slots in the TDD slot pattern, receiving scheduling information scheduling a plurality of repetitions of an uplink channel transmission across one or more slot boundaries, and transmitting the plurality of repetitions of the uplink channel transmission based on the TDD slot pattern and phase coherence configuration identified in the configuration information.