Duplication Transmission for 5G URLLC Reliability
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Solution Overview
Problem
Current wireless communication systems lack effective solutions for supporting ultra-reliable and low latency communications (URLLC) services, particularly in the 5G network, where data transmission reliability and latency requirements are stringent, especially in scenarios like unmanned driving and telemedicine.
Innovation Solution
The implementation of a duplication transmission method across multiple links between terminal devices and base stations, utilizing dual-connection/multi-connection technology, carrier aggregation, multi-numerology, and multiple-input multiple-output (MIMO) scenarios to enhance data transmission robustness and reliability, ensuring low latency by transmitting the same data on different links.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data is transmitted on a single link, then device complexity is reduced, but transmission reliability deteriorates
Solution Approach 1:
The patent segments the transmission path into multiple independent links (first link and second link) between the terminal device and the network device. By dividing the single transmission path into multiple segments, the system achieves both improved reliability through diversity and manageable complexity through modular link structures.
Solution Approach 2:
The patent implements data duplication by copying the same data packet and transmitting it through multiple different links. This copying approach ensures that if one link fails, the duplicate copy on another link can be received, thereby improving reliability without requiring complex error correction mechanisms.
2Reliability
If multiple links are used for data transmission, then transmission reliability is improved, but latency increases
Solution Approach 1:
The patent establishes multiple transmission links in advance before data transmission begins. The terminal device and network device pre-configure both the first and second links, so when data needs to be transmitted, it can immediately use the pre-established paths without additional setup delay, thus reducing latency while maintaining reliability.
Solution Approach 2:
The patent implements dynamic link selection where the terminal device can adaptively choose which link (first or second) to use for transmission based on real-time channel conditions. This dynamic approach allows the system to switch to the best available link quickly, minimizing latency while ensuring reliable transmission through the availability of multiple paths.
Data Source
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AI summary
This patent application provides a duplication transmission method and apparatus. The method includes: receiving, by a terminal device, duplication transmission configuration information sent by a radio access network RAN device, where the duplication transmission configuration information includes configurations of at least one of a duplication transmission mode and duplication transmission content of the terminal device; and performing, by the terminal device, duplication transmission based on the duplication transmission configuration information. According to the duplication transmission method in this application, robustness of data transmission of the terminal device is improved.