RF-Lightwave Handover Using Simultaneous Access Point Links
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Solution Overview
Problem
Existing RF/lightwave communication systems experience long disconnection times due to the need for reconnection when switching between RF and lightwave access points, especially when a mobile terminal moves out of one coverage and into another, as they rely on throughput thresholds and prediction methods that introduce delays in determining the need for path switching.
Innovation Solution
The system maintains connections with both RF and lightwave access points, allowing for seamless switching by transmitting broadcasts in the lightwave region and receiving response packets, enabling immediate path switching without reconnection when conditions allow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the system uses throughput threshold observation to determine disconnection, then communication stability is improved, but disconnection time becomes long due to averaging processing requirements
Solution Approach 1:
The system performs preliminary actions by maintaining standby connections and pre-evaluating alternative access points before disconnection is actually needed. The mobile terminal device keeps potential handover targets ready and pre-assesses their availability, so when disconnection becomes necessary, the switch can occur immediately without waiting for throughput observations to complete.
Solution Approach 2:
The system dynamically adjusts the disconnection determination criteria based on movement detection. When the mobile terminal device detects user movement, it switches from requiring averaged throughput observations to using immediate throughput threshold comparisons, allowing faster disconnection decisions during mobility events while maintaining stability during stationary periods.
2Adaptability or versatility
If the system requires reconnection when switching access points, then communication path switching is achieved, but total switching time increases
Solution Approach 1:
The mobile terminal device establishes and maintains standby connections to potential handover target access points before actual handover occurs. These preliminary connections include pre-synchronized timing information and pre-established communication channels, enabling immediate activation without reconnection delays when handover becomes necessary.
Solution Approach 2:
The system maintains continuous communication channels by keeping standby connections active throughout the access point switching process. Instead of breaking the communication flow and reestablishing it, the system continuously maintains multiple potential paths and seamlessly transitions between them, ensuring uninterrupted data flow during handover.
3Speed
If the system maintains connections with both RF and lightwave access points, then switching speed is improved, but device complexity increases
Solution Approach 1:
The system segments connection management into distinct functional modules: an RF communication module for radio frequency connections, a lightwave communication module for optical connections, and a unified connection management module that coordinates between them. Each module handles its specific protocol and connection details independently, reducing overall complexity while enabling simultaneous maintenance of multiple connection types.
Data Source
AI summary
The present disclosure provides an RF/lightwave communication system C in which a mobile terminal device M transmits a broadcast in a lightwave region and a layer 2 in a case of performing communication with an RF access point R, a lightwave access point L1 or L2 that receives the broadcast in the lightwave region and the layer 2 returns a response packet in the lightwave region and the layer 2 to the mobile terminal device M, and the mobile terminal device M performs switching of a communication path from the RF access point R to the lightwave access point L1 or L2 that is allowed to return the response packet in the lightwave region and the layer 2 in a case where the mobile terminal device M is allowed to receive the response packet in the lightwave region and the layer 2.