Radio Base Station Emergency Broadcast Failure Detection
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Solution Overview
Problem
In mobile communication systems, radio base stations cannot effectively report unsuccessful transmissions of emergency information to switching centers, leading to undetected failures in designated cells.
Innovation Solution
The radio base station transmits a response message to the switching center, setting the number of successfully transmitted cells to '0' when emergency information is not sent to any cells, allowing the switching center to detect transmission failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the radio base station transmits emergency information to multiple cells, then the coverage of emergency information is improved, but the ability to report transmission failures to the switching center deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where the radio base station sends transmission status information back to the switching center. When emergency information transmission to cells fails, the base station generates failure status information containing cell identification and transmits it to the switching center, enabling the center to detect and respond to transmission failures.
Solution Approach 2:
The patent introduces failure status information as an intermediary carrier to convey transmission failure details from the radio base station to the switching center. This intermediary structure allows the switching center to indirectly obtain failure information through the base station's reporting mechanism.
2Reliability
If the radio base station reports transmission status to the switching center, then the reliability of failure detection is improved, but the complexity of the communication protocol increases
Solution Approach 1:
The patent extracts only the essential failure information (cell identification and failure status) from the complete transmission status and reports it to the switching center. This selective reporting approach maintains high failure detection reliability while minimizing protocol complexity by transmitting only necessary data.
Solution Approach 2:
The patent changes the parameter representation by using compact cell identification values and binary failure status indicators instead of detailed transmission logs. This parameter optimization reduces message size and processing complexity while maintaining the ability to accurately detect and report failures.
Data Source
AI summary
A mobile communication method according to the present invention includes the steps of: (A) transmitting, from a radio base station (eNB) to a plurality of cells designated by a transmission request received from a switching center (MME), broadcast information; and (B) transmitting, from the radio base station (eNB) to the switching center (MME), a transmission response which includes an information element to which the number of cells and identification information of the cells are set, in accordance with the transmission request; wherein, in the step (B), when the broadcast information was not successfully transmitted to all the plurality of cells, the radio base station sets “0” to the number of cells in the information element.