Relay Node Indication for Mobile Handover Optimization
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing and differentiating between fixed and mobile relay nodes, particularly in high-speed environments like high-speed trains, where frequent UE attach procedures disrupt services due to frequent handovers and lack of pre-configured DeNB cell lists.
Innovation Solution
A method and apparatus for a relay node to transmit an indication of being either a fixed or mobile relay node, allowing for the reception of initial parameters, which includes a list of donor eNodeB cells along a trajectory for mobile relay nodes, thereby reducing the need for frequent UE attach procedures and enhancing handover efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mobile relay nodes perform frequent UE attach procedures during handovers, then service continuity is maintained, but service interruptions increase and handover efficiency decreases
Solution Approach 1:
The patent applies preliminary action by pre-configuring mobile relay nodes with a list of donor eNodeB cells along their trajectory before handover occurs. This allows the mobile relay node to proactively establish connections with future donor cells without waiting for conventional handover triggers, thereby reducing service interruptions and maintaining continuity during high-speed movement.
2Device complexity
If mobile relay nodes use conventional UE attach procedures, then network management is simplified, but handover efficiency decreases and service interruptions increase
Solution Approach 1:
The patent applies segmentation by differentiating between fixed and mobile relay nodes, creating specialized handover mechanisms for mobile nodes. Mobile relay nodes receive segmented, pre-configured lists of donor cells specific to their trajectory, allowing them to bypass conventional attach procedures and perform faster, more efficient handovers tailored to their high-speed movement characteristics.
3Device complexity
If fixed relay nodes use the same configuration as mobile relay nodes, then configuration simplicity is maintained, but resource allocation efficiency decreases
Solution Approach 1:
The patent applies local quality by providing different configuration approaches for different relay node types. Fixed relay nodes receive standard network-managed configurations, while mobile relay nodes receive specialized pre-configured donor cell lists along their trajectories. This localized differentiation optimizes resource allocation for each node type's specific operational characteristics without unnecessarily complicating the overall system.
Data Source
AI summary
A method and apparatus for transmitting an indication in a wireless communication system is provided. A relay node (RN) transmits an indication which indicates that the RN is either a fixed relay node or a mobile relay node, and receives initial parameters from an operation, administration, and maintenance (OAM) according on the indication. If the RN is the mobile relay node, the initial parameters includes a list of donor eNodeB (DeNB) cells at a trajectory of the RN.