5G Control Message Duplication via Logical Channel Mapping
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Solution Overview
Problem
Current 5G mobile communication systems face challenges in reliably transmitting and receiving control messages through carrier aggregation, particularly for ultra-reliable and low-latency communications (URLLC), as there is no established method for identifying and processing duplicated control messages across multiple cells.
Innovation Solution
A method and apparatus for user equipment (UE) and base stations to configure carrier aggregation, allowing for duplicate transmission and reception of control messages by mapping them to different logical channels using duplication-identifying information or entities, enabling identification and processing of duplicated messages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If control messages are transmitted through multiple carriers using carrier aggregation, then reliability is improved, but device complexity increases due to the need to identify and process duplicated control messages
Solution Approach 1:
The patent applies copying by transmitting identical control messages through multiple carriers simultaneously. The base station creates duplicate copies of the same control message and sends them via different carriers, allowing the user equipment to receive the message through any one of the multiple paths, thereby improving reliability without requiring complex identification mechanisms
Solution Approach 2:
The patent implements universality by using a unified control message format that can be transmitted across multiple carriers. The same control message structure and processing logic are applied universally to all carriers, simplifying the device complexity while maintaining the ability to transmit through multiple paths for enhanced reliability
2Reliability
If control messages are transmitted through multiple carriers, then service reliability for URLLC is improved, but processing time increases due to the need to handle duplicated messages
Solution Approach 1:
The patent applies preliminary action by pre-configuring the user equipment with information about multiple carriers that can carry control messages. The UE is prepared in advance to monitor and process control messages on multiple carriers simultaneously, eliminating the need for sequential processing and reducing overall processing time while maintaining high reliability
Solution Approach 2:
The patent implements partial action by allowing the user equipment to process only the first received control message from among multiple duplicates. Once a control message is successfully received and processed on any carrier, the UE can disregard duplicate messages on other carriers, thereby reducing processing time while still achieving the reliability benefits of multi-carrier transmission
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.