P2P Proxy Switching for Mobile Peer Mobility
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Solution Overview
Problem
In Peer-to-Peer (P2P) networks, service disruptions occur frequently when a peer moves, leading to increased service disruption times and network instability.
Innovation Solution
A P2P-based network apparatus that includes a movement sensing unit, a candidate proxy selection unit, a data packet forwarding unit, and an information control unit to detect movement, select and switch to a candidate proxy, and manage data packet forwarding, thereby minimizing service disruptions during peer movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a peer moves in a P2P-based network, then the peer can access new network areas, but service disruption occurs and network stability deteriorates
Solution Approach 1:
The patent introduces a proxy server as an intermediary between mobile peers and the P2P network. When a peer moves, the proxy server maintains the connection by forwarding data packets, acting as a mediator that absorbs the mobility impact. The proxy server receives data from correspondent peers and forwards it to the mobile peer, ensuring service continuity during movement.
Solution Approach 2:
The system performs preliminary actions by pre-selecting candidate proxies and establishing backup communication paths before actual movement occurs. The movement sensing unit detects movement trends in advance, and the candidate proxy selection unit prepares alternative proxies ahead of time, enabling seamless transition without service disruption.
2Loss of time
If frequent proxy switching is performed to handle peer movement, then service disruption time is reduced, but network complexity and overhead increase
Solution Approach 1:
The patent applies local quality by making proxy switching decisions based on local movement detection at each peer and proxy. Instead of centralized control, each node independently senses movement locally and makes switching decisions based on local candidate proxy evaluation, reducing overall network overhead while maintaining rapid response.
Solution Approach 2:
The system implements self-service through automatic movement sensing and autonomous proxy selection. The movement sensing unit automatically detects peer movement, and the candidate proxy selection unit autonomously selects appropriate proxies without manual intervention or complex centralized coordination, simplifying network management overhead.
3Loss of information
If data packets are buffered during proxy switching, then packet loss is reduced, but transmission delay increases
Solution Approach 1:
The patent applies partial action by buffering only the necessary minimum number of data packets during proxy switching, rather than buffering all packets or using extensive buffering strategies. This selective buffering approach reduces transmission delay while still preventing packet loss during the critical switching transition period.
Solution Approach 2:
The system maintains continuity of useful action by establishing overlapping communication paths before and during proxy switching. Data packets continue to flow through the network with minimal interruption, as the proxy server maintains forwarding capability during the transition, reducing both packet loss and delay.
Data Source
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AI summary
A Peer-to-Peer (P2P)-based network apparatus and system is provided. The P2P-based network apparatus may sense the movement of a mobile station (MS), select a candidate proxy, and change a proxy of the MS to the candidate proxy.