Uplink Random Access Repetition for Low-Latency 5G Coverage

The patent implements dynamic selection of repetitive transmission types (first type or second type) and dynamic determination of the number of repetitive transmissions based on random access related parameters. This allows the system to adapt transmission characteristics to specific service requirements, achieving high reliability for low-latency services while maintaining flexibility to use simpler methods when appropriate.

The patent changes key transmission parameters including the type of repetitive transmission (first type with different timing relationships versus second type with repeated slots), the number of repetitive transmissions, and the association between uplink messages and downlink messages. These parameter variations enable the system to meet diverse coverage and reliability requirements without requiring fundamentally different system architectures.

The system dynamically determines the number of repetitive transmissions based on random access related parameters, allowing optimization of the balance between reliability and latency. For services requiring low latency, the system can select fewer repetitions with optimized timing, while for services requiring high reliability, more repetitions are allocated. This dynamic adaptation prevents fixed repetitive transmission schemes from causing unnecessary latency delays.

The patent segments the uplink transmission into different types of repetitive transmissions (first type and second type) with distinct characteristics. The first type allows flexible timing relationships between messages, while the second type uses repeated slots. This segmentation enables selective application of different repetition strategies for different parts of the transmission process, optimizing the reliability-latency tradeoff for each segment based on service requirements.