LTE Broadcast Segment Change Notification Mechanism
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Solution Overview
Problem
In conventional LTE mobile communication systems, radio base stations changing the subframes and size of broadcast information segments during repeated transmission can lead to incomplete reception by mobile stations, causing them to miss essential segments.
Innovation Solution
A broadcast information transmission method where the radio base station sends a change notification to mobile stations when altering segment sizes or subframes, allowing stations to re-receive missed segments by retransmitting all affected segments upon notification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the radio base station changes subframes and segment sizes during repeated transmission of broadcast information, then transmission flexibility and adaptability are improved, but mobile stations cannot reliably receive complete segments leading to information loss
Solution Approach 1:
The patent applies preliminary action by transmitting a change notification indicator before actually changing the segment configuration. This allows mobile stations to be alerted in advance that a change is coming, so they can prepare to receive updated segmentation information and ensure complete reception of all segments with the new configuration, preventing information loss while maintaining transmission flexibility
2Reliability
If the radio base station repeatedly transmits multiple segments to ensure complete reception, then reliability of information delivery is improved, but time required for mobile stations to acquire broadcast information increases
Solution Approach 1:
The patent implements feedback by having mobile stations monitor for change notification indicators and adjust their reception behavior accordingly. When a change notification is detected, mobile stations know to expect updated segment configurations and can efficiently retrieve all necessary segments with the new configuration, reducing the time needed to acquire complete broadcast information while maintaining reliable delivery
3Loss of information
If the radio base station transmits all segments again upon any change, then completeness of broadcast information is ensured, but transmission efficiency and power consumption worsen
Solution Approach 1:
The patent extracts and transmits only the essential change notification indicator separately from the actual broadcast information segments. This allows mobile stations to efficiently identify what has changed and retrieve only the necessary updated segments rather than requiring retransmission of all segments, thereby ensuring information completeness while reducing transmission power consumption and improving efficiency
Data Source
AI summary
A radio base station (eNB) transmits a change notification to the plurality of mobile stations (UE), when repeatedly transmitting the plurality of segments, and when having changed a content of the broadcast information formed of the plurality of segments, size of each of the plurality of segments or subframes in which the plurality of segments are to be transmitted, the change notification indicating the change. The mobile station (UE) receives all the plurality of segments again, when having failed to receive only some of the plurality of segments, and when having received the change notification.