Duplicated Control Message Mapping Across Carriers for URLLC
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Solution Overview
Problem
Existing mobile communication systems, particularly 5G, lack a method for duplicately transmitting and processing control messages through carrier aggregation to ensure high reliability and low latency, which is essential for services like URLLC.
Innovation Solution
A method and apparatus for user equipment and base stations to duplicately transmit and receive control messages using carrier aggregation by mapping identical control messages to different logical channels through duplication-identifying information or entities, enabling accurate identification and processing of duplicated messages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If control messages are transmitted through a single carrier, then the system complexity is low, but the reliability and latency requirements for URLLC services cannot be satisfied
Solution Approach 1:
The patent segments the control message transmission by dividing it across multiple carriers (component carriers). The control message is transmitted through multiple carriers simultaneously, allowing the system to achieve higher reliability through diversity while managing complexity through structured segmentation of the transmission path.
Solution Approach 2:
The patent changes the transmission parameters by configuring multiple carriers with different characteristics (frequency, bandwidth, timing). By adjusting carrier aggregation parameters and configuring multiple transmission paths with varying parameters, the system optimizes reliability for URLLC services while controlling overall system complexity.
2Reliability
If control messages are duplicated across multiple carriers, then reliability improves, but the complexity of identifying and processing duplicated messages increases
Solution Approach 1:
The patent implements copying of control messages across multiple carriers to achieve redundancy and reliability. The same control message is transmitted through multiple carriers, and the receiving device is configured to identify and process these copied messages through standardized procedures, reducing the complexity burden despite the duplication.
Solution Approach 2:
The patent incorporates feedback mechanisms where the receiving device acknowledges receipt of control messages transmitted through multiple carriers. This feedback system helps manage the processing of duplicated messages by providing confirmation and enabling the transmitting device to determine when all redundant transmissions have been successfully received.
3Loss of time
If carrier aggregation is configured for duplicate transmission, then latency is reduced through parallel processing, but the difficulty of detecting and managing multiple carriers increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring carrier aggregation parameters, resource allocations, and transmission timing before actual control message transmission. The base station and user equipment establish the multi-carrier framework in advance, enabling parallel processing and reduced latency while simplifying real-time detection and management during actual operation.
Data Source
AI summary
Provided is a method for a user equipment to duplicately receive an identical control messages. The method includes duplicately receiving identical control messages from a base station and processing the duplicately received identical control messages by mapping same to mutually different logical channels, by using identification information or an identification entity for identifying and processing the duplicately received identical control message.