Early Termination of Downlink Channel Repetition in 5G NR
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Solution Overview
Problem
Current wireless communication technologies, such as LTE and NR, face inefficiencies in resource utilization and coverage enhancement due to fixed repetition transmission schemes, which can lead to wasted resources and difficulties in applying transmit beam diversity, especially in 5G/NR networks.
Innovation Solution
Implementing a method where user equipment selectively provides acknowledgments after a reduced number of repetitions, allowing early termination of transmissions and identifying multiple transmit beams for improved spatial diversity, thereby optimizing resource utilization and coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fixed repetition transmission schemes are used to ensure reliable delivery, then transmission reliability is improved, but resource utilization deteriorates due to wasted repetitions when decoding succeeds early
Solution Approach 1:
The patent implements dynamic early termination of repetition transmissions by allowing the receiving device to send an early termination indication when successful decoding occurs before all scheduled repetitions are transmitted. This transforms the fixed repetition scheme into a dynamic one that adapts to actual channel conditions and decoding performance, stopping transmissions early when successful to conserve resources while maintaining reliability when needed.
2Reliability
If multiple transmit beams are used to improve spatial diversity, then coverage is improved, but device complexity increases due to beam identification and management
Solution Approach 1:
The patent segments the beam management process by separating beam transmission from beam identification. Multiple transmit beams are transmitted through different physical channels (downlink shared channel, downlink control channel, uplink control channel), and the receiving device identifies which beam was successfully decoded. This segmentation allows spatial diversity to be achieved while simplifying the management complexity by providing clear identification mechanisms for each beam type.
Data Source
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AI summary
Certain aspects of the present disclosure generally relate to wireless communication. More particularly, certain aspects of the present disclosure relate to early termination of a downlink channel repetition transmission, early termination of an uplink channel repetition, and/or determination of a plurality of beams for a repetition transmission. Numerous other aspects are provided.