Home Network Data Continuity via Wireless Node Buffering
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Solution Overview
Problem
In home networks, the lack of handover or roaming technology between wireless nodes causes disruptions in multimedia data transfer when a Mobile Station (MS) moves between coverage zones, resulting in disconnected services and the need for retransmissions.
Innovation Solution
A method is implemented in a home network system to ensure continuous data transfer by buffering data when a connection is cut off and establishing a new connection with a second wireless node, allowing seamless data transfer by searching for and retrieving buffered data from the previous node.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If handover or roaming technology is not supported between wireless nodes, then device complexity is reduced, but data transfer reliability deteriorates when MS moves between coverage zones
Solution Approach 1:
The system performs preliminary actions by buffering data at the first wireless node before the MS actually moves away. This proactive data storage ensures that when the MS reconnects to a second wireless node, the buffered data is already available for immediate transfer, eliminating the need for complex real-time handover protocols while maintaining data transfer continuity.
Solution Approach 2:
The patent introduces a server as an intermediary component that coordinates between the first and second wireless nodes. The server receives buffered data from the first node, manages the data transfer process, and delivers it to the MS through the second node. This intermediary approach simplifies the wireless nodes' functionality while ensuring reliable data transfer across coverage zone transitions.
2Reliability
If the MS establishes a new connection with the second wireless node after moving, then connection reliability is improved, but data transfer continuity deteriorates due to required retransmission requests
Solution Approach 1:
The first wireless node performs preliminary action by buffering the data that the MS was receiving before disconnection occurs. This advance preparation eliminates the need for the MS to request retransmission after reconnecting to the second wireless node, as the data is already available at the network side, thus reducing time loss while maintaining connection reliability.
3Reliability
If data is buffered at the first wireless node when connection is cut off, then data transfer continuity is improved, but device complexity increases due to buffering and node search mechanisms
Solution Approach 1:
The server acts as an intermediary that centralizes the buffering and coordination functions. Rather than requiring the first wireless node to maintain complex buffering and search mechanisms, the server handles data buffering and coordinates the transfer to the second wireless node. This distribution of complexity to a dedicated server simplifies the wireless nodes while maintaining seamless data transfer capability.
Data Source
AI summary
A home network system for supporting continuity of data transfer destined for an MS (Mobile Station) when the MS moves between wireless nodes, comprising a server for storing multimedia data and a network connecting the server to the MS via the wireless nodes. A first wireless node, while transferring predetermined data from the server to the MS, senses that a connection with the MS is cut off. The predetermined data to be transferred to the MS is then buffered in one or more of the wireless nodes at a time point of disconnection with the MS, and the first wireless node maintains a connection with the server. A second wireless node in the home network system establishes a connection with the MS and, in response a data transfer request from the MS, provides the buffered data to the MS.