Base Station Handover Data Duplication Prevention
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Solution Overview
Problem
During handover in mobile communication networks, data sequence changes and incomplete data transmission lead to inefficiencies, such as duplication and delay, as the target base station may receive data out of order or not at all, causing network consumption and waste.
Innovation Solution
A base station method that includes transmitting data with sequence numbers and confirmation information to the target base station during handover, ensuring only confirmed data is sent and preventing duplication by indicating the order and confirmation status of data packets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the target base station receives all data from the source base station during handover, then data completeness is improved, but network consumption increases due to transmitting already received data
Solution Approach 1:
The source base station performs preliminary actions by identifying and marking data that has already been successfully received by the mobile terminal before handover occurs. This preliminary identification of redundant data allows the target base station to avoid transmitting unnecessary packets, reducing network consumption while maintaining data completeness.
Solution Approach 2:
The system implements feedback mechanisms where the source base station receives acknowledgments from the mobile terminal about which data packets have been successfully received. This feedback information is then used to determine which data should not be forwarded to the target base station, optimizing the data transfer process during handover.
2Speed
If the target base station receives data from the source base station out of sequence, then data transmission speed is improved, but data sequence accuracy deteriorates
Solution Approach 1:
The data transmission process is segmented into two independent streams: data packets with their original sequence numbers for reassembly in order, and acknowledgment packets confirming successful reception. This segmentation allows parallel transmission of multiple packets while maintaining the ability to reconstruct the original sequence at the destination.
Solution Approach 2:
The system changes the parameter of data packet identification by attaching sequence numbers to each packet. This parameter change enables the target base station and mobile terminal to reorder packets that arrive out of sequence, ensuring data sequence accuracy is maintained even when transmission speed is optimized through parallel processing.
3Reliability
If the target base station transmits data received from the source base station to the mobile terminal, then data completeness is improved, but duplicate transmission occurs consuming additional network resources
Solution Approach 1:
The source base station performs preliminary identification of data that has already been successfully received by the mobile terminal before handover. By marking these packets as redundant in advance, the system prevents the target base station from transmitting duplicate data, reducing overall transmission volume while ensuring all necessary data is delivered.
Solution Approach 2:
The system extracts and removes redundant data packets from the transmission stream. By identifying packets that have already been acknowledged as received by the mobile terminal, the source base station excludes these packets from being forwarded to the target base station, eliminating duplicate transmissions and conserving network resources.
Data Source
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AI summary
Provided is a handover originating base station which transmits data to a handover destination base station, for performing mobile communication terminal handover in a mobile communication system. The handover originating base station is provided with a means for transmitting data whose transmission is not confirmed by a communication terminal, with information which indicates data transmitted just before.