Transceiver Roaming with Identity Preservation in Hybrid Networks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication networks face challenges in seamless roaming between transceivers, leading to data loss and requiring modifications in hardware or software, especially in Wireless Local Area Networks (WLANs).
Innovation Solution
A method and system that allow wireless communication terminals to roam between transceivers by evaluating roaming conditions, such as link quality and traffic needs, and switching channels while maintaining the same transceiver identity, enabling seamless transitions without data loss and transparency to the terminal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If device roaming between transceivers is implemented in conventional WLANs, then network flexibility and coverage are improved, but data loss occurs during transition and hardware/software modifications are required
Solution Approach 1:
The source transceiver performs preliminary actions by evaluating roaming conditions, selecting a target transceiver, and preparing the transition before the actual channel switch occurs. This includes notifying the terminal of the upcoming switch and coordinating with the target transceiver to minimize data loss.
Solution Approach 2:
The patent introduces an intermediary coordination mechanism where the source transceiver acts as a mediator to manage the roaming transition. It coordinates the channel switch timing, transfers necessary information to the target transceiver, and ensures seamless handover to prevent data loss.
2Adaptability or versatility
If device roaming between transceivers is implemented, then network coverage and flexibility are improved, but hardware or software modifications are required
Solution Approach 1:
The patent makes the transceivers universal by enabling them to operate on multiple channels and assume different roles (source or target) during roaming. This multi-functionality allows conventional WLAN hardware to support roaming without specialized modifications, as any transceiver can serve as either source or target based on roaming needs.
Solution Approach 2:
The roaming mechanism is designed to be self-service, where transceivers autonomously evaluate roaming conditions, select appropriate targets, and execute transitions using existing WLAN protocols. This eliminates the need for external control systems or complex hardware modifications, as the system manages its own roaming operations.
3Speed
If fast roaming is implemented by switching channels, then transition speed is improved, but transparency to terminal and seamless experience are compromised
Solution Approach 1:
The source transceiver acts as an intermediary that shields the terminal from the complexity of the roaming process. It manages the channel switch timing and coordinates with the target transceiver to present a seamless experience, while the terminal simply follows basic reassociation procedures without needing to understand the underlying roaming mechanics.
Data Source
AI summary
A method for communication includes communicating between a first transceiver and a wireless communication terminal on a first channel, while identifying the first transceiver to the terminal with a transceiver identity. A roaming condition, which determines whether the terminal is to roam to a second transceiver operating on a second channel, is evaluated. Upon meeting the roaming condition, the terminal is instructed to switch to the second channel, and the terminal is subsequently communicated with using the second transceiver on the second channel while identifying the second transceiver to the terminal with the same transceiver identity as the first transceiver.