Centralized Stack Node Wireless Handover
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current Bluetooth (BT)/Bluetooth Low Energy (BLE) handover procedures lack an efficient method to switch between access nodes without reestablishing connections, leading to suboptimal link quality and increased complexity, especially in vehicular access applications where continuous connectivity is crucial.
Innovation Solution
A centralized stack node implements a communication stack that determines link quality thresholds and initiates handovers to access nodes with better link quality, updating access node identifiers to maintain seamless communication without requiring inter-stack handovers, thus reducing complexity and improving link quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional BT/BLE handover procedures are used, then connection switching between access nodes is performed, but the handover process requires reestablishing connections which increases complexity and reduces communication reliability
Solution Approach 1:
The patent implements preliminary actions by pre-establishing connection parameters and maintaining connection context information at the stack node before handover is needed. The system prepares alternative access node information and keeps connection state data ready, allowing the remote device to switch access nodes without reestablishing the connection from scratch, thus reducing both complexity and improving reliability
2Reliability
If the remote device switches between access nodes frequently to maintain optimal link quality, then communication reliability improves, but the handover frequency increases bandwidth consumption and system overhead
Solution Approach 1:
The patent implements feedback mechanisms where the stack node continuously monitors link quality metrics and compares them against threshold values. The system provides feedback about connection status and link quality to both the remote device and access nodes, enabling intelligent handover decisions that maintain optimal connectivity while avoiding excessive handovers that would waste bandwidth. The feedback loop allows the system to adjust handover timing and select the most efficient access node based on real-time conditions
3Device complexity
If a centralized stack node manages all access nodes, then handover complexity is reduced and transparency is improved, but the control and coordination requirements increase system overhead
Solution Approach 1:
The patent merges the stack functionality into a centralized node that manages multiple access nodes. By combining the communication stack and access node management into a single centralized entity, the system simplifies the handover procedure from the remote device's perspective while the centralized stack node automatically handles the coordination and control plane communications with multiple access nodes, reducing perceived complexity while managing automation overhead centrally
Data Source
AI summary
A method includes communicating with a remote device using a first access node of an access network; determining, by a centralized stack node of the access network, that a quality of a first wireless communication link between the remote device and the first access node is below a threshold; identifying a second access node in the access network for which a quality of a second wireless communication link between the remote device and the second access node is above the threshold; responsive to identifying the second access node, updating, by a centralized controller of the stack node, an access node identifier associated with a connection with the remote device to be an identifier for the second access node; and communicating with the remote device using the second access node.