User Device Emergency Information Duplication Detection Control
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Solution Overview
Problem
In LTE or NR communication systems, the simultaneous delivery of traffic information to vehicles or pedestrians using cellular V2X is hindered by duplicated receiving processes in the Cell Broadcast Service when a user device moves between cells, as the frequency of delivering disaster and traffic information differs, potentially affecting the reception of traffic information due to duplication detection functions designed for disaster information.
Innovation Solution
The user device adjusts its control process for receiving emergency information by changing the duplication detection duration or function based on the message ID, application, position, or movement, allowing it to correctly receive different types of emergency information without being flagged as duplicated.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If duplication detection function is applied to emergency information reception, then disaster information reception reliability is improved, but traffic information reception is hindered due to frequency differences
Solution Approach 1:
The patent applies different duplication detection durations based on the type of emergency information. For disaster information, a longer duplication detection duration is used to ensure reliability, while for traffic information, a shorter duration is applied to maintain delivery efficiency. This local differentiation resolves the contradiction by tailoring the detection parameter to the specific information type rather than using a uniform approach.
Solution Approach 2:
The patent dynamically adjusts the duplication detection duration based on the received emergency information characteristics. The system can change the detection duration from a fixed value to a variable parameter that adapts to the information type, allowing optimized performance for both disaster and traffic information reception scenarios.
2Ease of operation
If uniform duplication detection duration is used for all emergency information, then implementation simplicity is maintained, but information reception accuracy deteriorates due to service frequency differences
Solution Approach 1:
The patent changes the duplication detection duration parameter based on the emergency information type. By modifying this key parameter dynamically, the system achieves more accurate information reception without significantly complicating the overall reception process, as the change is made at the parameter level rather than the fundamental process level.
Data Source
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AI summary
A disclosed user device includes a receiver configured to receive emergency information from a network; and a control unit configured to change a process of detecting whether first emergency information is duplicated with second emergency information upon receiving, by the receiver, the second emergency information after the first emergency information, based on the first emergency information.