Network Gateway Correspondence Table for Remote Control
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Solution Overview
Problem
Current communication systems across networks cannot enable active remote control of devices in private networks from public networks due to limitations in IP address translation methods, where devices in the public network cannot initiate remote control actions on devices in the private network without a prior connection request.
Innovation Solution
A communication system and method that include a client end, a mobile end, a network service end, and a server end, where the server end maintains a correspondence table for socket ports and network ID codes, allowing for the establishment of connections and transmission of controlling messages between devices across public and private networks, enabling remote control functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If IP address translation is used to solve insufficient IP addresses, then public IP addresses can be reused across private networks, but devices in the public network cannot actively perform remote controls on devices in the private network
Solution Approach 1:
The patent introduces a gateway device as an intermediary between the public network and private network. The gateway maintains a correspondence table that maps private device identifiers to their actual IP addresses and port numbers. When a remote control request arrives from the public network, the gateway uses this correspondence table to forward the request to the correct private network device, enabling active remote control while maintaining IP address translation benefits
Solution Approach 2:
The patent implements preliminary action by pre-establishing correspondence relationships between private network devices and their external access points. The gateway device maintains a correspondence table that is populated in advance with device identifiers, IP addresses, and port numbers. This pre-established mapping enables the gateway to immediately forward incoming remote control requests without requiring real-time connection establishment, thus enabling active remote control capability
2Reliability
If a connection request must be sent from private network to public network for address translation, then IP address correspondence can be established, but the public network device cannot initiate remote control without prior connection
Solution Approach 1:
The gateway device acts as an intermediary that maintains a correspondence table mapping private device identifiers to their IP addresses and port numbers. This table is populated in advance, allowing the gateway to translate and forward incoming requests from the public network to the correct private network devices without requiring prior connection initiation from the private network side
Solution Approach 2:
The correspondence table is pre-populated with device identification information, IP addresses, and port numbers before any remote control operations. This preliminary establishment of mapping relationships enables the system to accept and route incoming requests from the public network to the appropriate private network devices, providing initiation flexibility while maintaining reliable address translation
Data Source
AI summary
This specification discloses a communication system across networks and the method thereof for processing remote controls of devices in a private network from a public network. By providing a server end that contains correspondence relations between client ends and mobile ends in a public network, packets in the public network are automatically transmitted to devices in a private network according to the correspondence table in the server end for remote controls. The invention increases the convenience in managing devices in a private network.