SRNS Relocation via Source Node B+ Autonomous Decision
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Solution Overview
Problem
Current SRNS relocation procedures in wireless communication systems are inefficient in handling inter-Node B+ mobility, leading to high handover delay and increased processing load at the Core Network, and require excessive signaling messages.
Innovation Solution
An enhanced SRNS relocation method where a Source Node B+ sends a relocation request to a Target Node B+ based on user equipment measurements, performs physical channel reconfiguration, forwards packet data units, and establishes radio link synchronization, reducing reliance on Core Network signaling and minimizing packet loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If current SRNS relocation procedures are used, then mobility between Node B+ is supported, but handover delay increases and processing load at Core Network increases
Solution Approach 1:
The patent extracts the relocation decision-making function from the Core Network and relocates it to the Source Node B+. The Source Node B+ autonomously decides when relocation is needed based on UE measurement reports, eliminating the need for Core Network involvement in the decision process and reducing signaling overhead to the core network.
Solution Approach 2:
The relocation procedure is segmented into distinct phases: measurement collection by UE, autonomous decision by Source Node B+, target cell preparation, and execution. This segmentation allows parallel processing of measurement collection and relocation decision-making, reducing overall handover delay while distributing processing load appropriately.
2Adaptability or versatility
If current SRNS relocation procedures are used, then mobility between Node B+ is supported, but signaling messages increase
Solution Approach 1:
The patent removes Core Network signaling from the relocation procedure by enabling autonomous decision-making at the Source Node B+. This extraction eliminates multiple signaling rounds between Node B+ and Core Network, reducing total signaling message count while preserving mobility support through direct Node B+ to Target Node B+ communication.
3Productivity
If current SRNS relocation procedures are used, then relocation is performed, but processing load at Core Network increases
Solution Approach 1:
The patent extracts the processing load of relocation decision-making from the Core Network and transfers it to the Source Node B+. The Core Network retains only essential functions like authentication and billing, while the Source Node B+ handles measurement evaluation, relocation timing decisions, and coordination with Target Node B+, significantly reducing core network processing load.
Solution Approach 2:
The Source Node B+ serves itself by autonomously making relocation decisions based on UE measurements without requiring Core Network intervention. This self-service capability allows the node to handle relocation operations independently, reducing the processing burden on the Core Network while maintaining relocation functionality.
Data Source
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AI summary
A method for SRNS relocation comprises sending a relocation request from a Source Node B+ to a Target Node B+ based on measurements received from a User Equipment; sending a Physical Channel reconfiguration message from the Source Node B+ to the UE; forwarding packet Data Units (PDU) from the source Node B+ to the Target Node B+; and performing physical layer synchronization and radio link establishment with a target cell of the Target Node B+.