Wireless Relay Group Handover via Device Characteristic Segmentation
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Solution Overview
Problem
In wireless telecommunications systems, particularly in scenarios involving mobile relay nodes, group handover processes often fail to distinguish between devices that should remain connected to a relay node and those that should transition to a new serving node, leading to network inefficiencies and connectivity issues, especially when a relay node moves out of range.
Innovation Solution
Implementing a method to determine predetermined characteristics of each device, such as distance, speed, direction, or detectable secondary signals, to selectively apply group handover commands, ensuring only relevant devices undergo handover with the relay node, while others transition to alternative network nodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If group handover commands are applied to all devices connected to a relay node, then the handover process is simplified and network overhead is reduced, but devices that should not handover with the relay node may experience connectivity issues or service disruptions
Solution Approach 1:
The patent segments the group handover process by introducing a determination step that divides devices into two categories: those that should handover with the relay node and those that should not. This segmentation allows the system to apply group handover commands selectively rather than uniformly to all devices, thereby maintaining connectivity reliability for devices that should remain connected while preserving handover efficiency for devices that should migrate.
Solution Approach 2:
The patent applies local quality by making the handover command application device-specific. Instead of applying a uniform handover policy to all devices, the system determines on a per-device basis whether the device should handover with the relay node, allowing different handover behaviors for different devices based on their specific characteristics and requirements.
2Device complexity
If all devices are forced to handover with the relay node when it moves out of range, then network management is simplified, but devices that remain within range of the original serving node experience unnecessary service disruptions
Solution Approach 1:
The patent segments the device population based on their handover requirements, identifying which devices should continue with the original serving node and which should transition to the new relay node. This segmentation enables differentiated network management that maintains service continuity for devices that don't require handover while still simplifying management for devices that do.
Solution Approach 2:
Instead of assuming all devices should handover with the relay node (conventional approach), the patent inverts the logic by determining which devices should NOT handover, allowing them to remain connected to the original serving node. This inversion prevents unnecessary service disruptions while maintaining simplified network management for the devices that do require handover.
3Reliability
If selective handover determination is implemented for each device, then connectivity reliability is improved, but the determination process and signaling overhead increase
Solution Approach 1:
The patent enables self-service by allowing the network system to automatically determine which devices should handover with the relay node based on pre-configured device characteristics or real-time conditions. This automated determination process reduces the need for complex manual configuration and minimizes signaling overhead while maintaining high connectivity reliability through accurate device-specific handover decisions.
Data Source
AI summary
A wireless telecommunications method comprising: determining if a terminal configured to communicate with a serving node via a relay has characteristics indicating the terminal should be handed over from a source serving node to a first target serving node if the relay is handed over from the source serving node to the first target serving node; if the terminal has the characteristics, controlling the terminal to be handed over from the source serving node to the first target serving node if the relay is handed over from the source serving node to the first target serving node; and if the terminal does not have the characteristics, controlling the terminal to be handed over from the source serving node to a second, different, target serving node if the relay is handed over from the source serving node to the first target serving node.