Personal Network Gateway Switching Without Service Suspension
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Solution Overview
Problem
Existing methods for switching personal network gateways in converged networks often result in unnecessary service suspension, which is undesirable for users, as it disrupts the seamless operation of connected devices.
Innovation Solution
A method for switching personal network gateways (PN GWs) that involves direct communication between devices operating as PN GWs and PNEs, using device operation mode information to efficiently manage PN GW changes, thereby minimizing service disruptions and ensuring stable information transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the PN GW switching is initiated by the PWGW according to existing methods, then the gateway switching can be performed, but service suspension occurs which disrupts seamless operation
Solution Approach 1:
The patent applies preliminary action by having the PNE transmit a PN GW change request message to the candidate PN GW before the actual gateway switching occurs. This allows the candidate gateway to be prepared in advance, and the switching to happen seamlessly without service suspension, as the new gateway is already ready to take over immediately.
2Productivity
If direct communication between devices is used for PN GW switching, then service suspension is minimized, but communication complexity increases
Solution Approach 1:
The patent segments the gateway switching process into distinct message exchange stages: the PNE sends a change request to the candidate PN GW, the candidate gateway responds with acceptance or rejection, and only then does the actual switching occur. This segmentation of the communication process simplifies the overall complexity by breaking down the complex switching operation into manageable, sequential steps with clear definitions for each message type and state transition.
Data Source
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AI summary
Abstract: The present invention relates to a converged personal network service (CPNS). More particularly, the present invention relates to a method for switching a personal network (PN) gateway in a PN from a first device to a second device, including the steps of: the first device transmitting, to the second device, a first message requesting PN gateway switching; the first device receiving a second message from the second device in response to the first message; and the first device authenticating the PN gateway when the second message includes a value indicating success, as well as to an apparatus therefor.