Ad-hoc IP Closed User Group Network Discovery
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Solution Overview
Problem
Existing communication systems for closed user groups are limited by the need for users to be physically located or actively using their devices to exchange voice, data, and video information, and do not effectively maintain contact between group members who are not 'plugged in' or on the move.
Innovation Solution
An intelligent access device coupled between an IP backbone and communication devices forms and tracks closed user groups, constantly 'pinging' members to maintain their IP addresses, enabling continuous communication and discovery of both fixed and mobile users, with database management and security measures to ensure group connectivity and authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional communication systems are used for closed user groups, then users can exchange voice, data, and video information, but users must be physically located or actively using their devices to maintain contact
Solution Approach 1:
The system pre-establishes communication routes and maintains connection state information in advance. When a user joins a CUG, the system proactively sets up signaling paths and maintains their communication state even when they are not actively using their device, enabling reliable contact without requiring continuous user presence or manual reconnection.
2Reliability
If fixed location communication devices are used, then stable communication can be achieved, but mobility and geographical flexibility are limited
Solution Approach 1:
The communication system is designed to universally support multiple device types and usage scenarios within the same CUG framework. It handles both fixed-location devices and mobile devices through unified signaling mechanisms, allowing users to communicate reliably whether they are stationary or moving, thereby achieving both stability and geographical flexibility.
3Ease of operation
If continuous discovery and tracking of group members is implemented, then seamless communication is enabled, but system complexity and resource consumption increase
Solution Approach 1:
The system implements self-service discovery mechanisms where users automatically register their presence and communication capabilities with the network when joining a CUG. The signaling system autonomously tracks and updates user locations and device states without requiring complex manual discovery protocols, reducing system complexity while maintaining seamless communication.
Data Source
AI summary
An arrangement for providing, on an ad hoc basis, closed user group (CUG) among a collection of pre-defined IP network users. A set of intelligent access devices, dispersed through the IP network, constantly transmit a set of pings associated with the defined CUGs to discover those devices within its communication range. The discovered IP addresses for each device is thus constantly updated, allowing group members to remain in constant contact (emulating an “always on” connection). The users feel they are always connected with group members and thus have instant access to voice/data/video sessions—much like hot lines or “always on” connections.