RRC Parameter Configuration for PUSCH Repetition Transmission
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Solution Overview
Problem
Current radio communication systems for fifth-generation cellular networks face challenges in efficiently managing repetition transmission types and configuring radio resource control parameters for optimal communication in scenarios like eMBB, URLLC, and mMTC, which require high-speed, low-latency, and reliable data transmission.
Innovation Solution
A base station and terminal apparatus system that configures and applies radio resource control parameters to perform repetition transmission of transport blocks on the PUSCH, using specific DCI formats to schedule and manage communication, enabling efficient communication by adapting to different scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple repetition transmission types are configured with different RRC parameters, then communication reliability is improved for different service scenarios, but device complexity and parameter management complexity increase
Solution Approach 1:
The patent implements dynamic selection of repetition transmission types (Type A and Type B) based on service requirements. The system can flexibly switch between different RRC parameter configurations (firstRRC-Parameters and secondRRC-Parameters) depending on whether eMBB, URLLC, or mMTC services are being performed, allowing the communication system to adapt its behavior to match specific service needs without permanently maintaining complex configurations for all scenarios simultaneously.
Solution Approach 2:
The patent changes key transmission parameters based on service type. For eMBB services, it uses firstRRC-Parameters with first repetition transmission type; for URLLC services, it uses secondRRC-Parameters with second repetition transmission type. This parameter switching mechanism allows the system to optimize communication reliability for each service scenario while managing complexity through conditional parameter application rather than permanent multi-configuration maintenance.
2Reliability
If repetition transmission is performed with configured RRC parameters, then data transmission reliability is improved, but transmission time and latency increase
Solution Approach 1:
The patent dynamically selects between first repetition transmission type and second repetition transmission type based on service requirements. For time-sensitive URLLC services, the system can choose the second repetition transmission type with secondRRC-Parameters that optimize for lower latency. For less time-critical eMBB services, it uses the first repetition transmission type with firstRRC-Parameters that optimize for reliability. This dynamic selection resolves the contradiction by matching transmission characteristics to service priorities.
Solution Approach 2:
Different repetition transmission types are applied locally to specific service scenarios rather than uniformly to all transmissions. The first repetition transmission type with firstRRC-Parameters is applied locally to eMBB services where reliability is paramount, while the second repetition transmission type with secondRRC-Parameters is applied locally to URLLC services where low latency is critical. This localized application allows each service to receive optimized treatment for its specific requirements.
Data Source
AI summary
A terminal apparatus includes a receiver configured to receive a first radio resource control (RRC) parameter for configuring one of a first repetition transmission type and a second repetition transmission type, and a transmitter configured to transmit, on a PUSCH, a transport block scheduled by a DCI format. The transmitter performs, by applying the repetition transmission type configured for the first RRC parameter, a repetition transmission of the transport block.