Dynamic TDD Configuration for 5G Wireless Signal Repetition
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Solution Overview
Problem
The challenge in 5G wireless communication systems is to design a repetition scheme that effectively handles flexible symbols and dynamic UL/DL configurations, particularly to support Ultra Reliable and Low Latency Communication (URLLC) traffic requirements for higher reliability and lower latency.
Innovation Solution
The proposed solution involves a method where a first node receives signaling indicating a symbol set and operates a radio signal within a specific symbol group of that set. This method dynamically determines the symbol group based on a target TDD configuration implicitly indicated by the signaling, allowing for flexible TDD configurations to meet different traffic type requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed TDD configuration is used for repetition transmission, then the system complexity is reduced, but the adaptability to different traffic types (eMBB vs. URLLC) deteriorates
Solution Approach 1:
The patent applies dynamics by making the TDD configuration selectable between at least two different configurations based on traffic type. The method dynamically chooses the first TDD configuration for eMBB traffic and the second TDD configuration for URLLC traffic, allowing the system to adapt its structure to different operational requirements rather than using a fixed configuration.
Solution Approach 2:
The patent changes the TDD configuration parameter according to traffic type. By switching between different TDD configurations (first configuration for eMBB, second configuration for URLLC), the system modifies its operational parameters to optimize performance for different traffic requirements while managing complexity through structured selection rules.
2Adaptability or versatility
If different TDD configurations are used for different traffic types, then the adaptability to traffic requirements is improved, but the device complexity increases
Solution Approach 1:
The system dynamically selects appropriate TDD configurations based on traffic type identification. The method incorporates dynamic decision logic that chooses between pre-defined TDD configurations, enabling adaptability to different traffic requirements (eMBB vs. URLLC) while managing complexity through structured selection rather than arbitrary complexity.
3Productivity
If the repetition crosses a boundary of a slot or DL/UL switching point, then the resource utilization is improved, but the transmission reliability deteriorates due to division into two actual repetitions
Solution Approach 1:
The patent applies local quality by differentiating handling of repetitions based on their position relative to slot boundaries and DL/UL switching points. The method identifies whether a repetition crosses such boundaries and applies different processing rules - allowing resource-efficient crossing when appropriate while maintaining reliability through proper segmentation and reassembly mechanisms for critical transmissions.
Data Source
AI summary
The present disclosure provides a method and device in nodes used for wireless communication. A first node receives a first signaling, the first signaling is used to indicate a first symbol set; and then operates a first radio signal in only a first symbol group in the first symbol set. The first signaling is used to indicate scheduling information of the first radio signal; any multicarrier symbol in the first symbol group belongs to the first symbol set, and a number of multicarrier symbol(s) comprised in the first symbol group is not greater than a number of multicarrier symbol(s) comprised in the first symbol set; a target TDD configuration is used to determine a type of each multicarrier symbol in the first symbol set, the target TDD configuration is used to determine the first symbol group out of the first symbol set.