Signaling Path Segmentation for Heterogeneous Network Coordination
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Solution Overview
Problem
Non-telephony Internet-based communication systems lack unified control, coordination, and signaling mechanisms, leading to complexities in session management across heterogeneous networks due to issues like Network Address Translation (NAT) traversal and firewall restrictions, which hinder reliable communication across multiple network boundaries.
Innovation Solution
A method that establishes a communication pathway over a digital telephone network for signaling, allowing for the separation of control signaling and media information, using existing telephony protocols to overcome NAT and firewall limitations, and enabling flexible session management across multiple network paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If control signaling and media information are transmitted over the same Internet pathway, then session coordination is simplified, but firewall restrictions block control signaling traffic and increase latency
Solution Approach 1:
The patent segments the communication pathway into two separate channels: a first communication pathway for control signaling and a second communication pathway for media information. This segmentation allows control signaling to traverse the telephony network while media information traverses the data network, overcoming firewall restrictions that block control signaling on Internet pathways.
Solution Approach 2:
The patent introduces a telephony network as an intermediary between the data network and the endpoints. The telephony network carries control signaling messages that coordinate the communication session, while the data network carries media information. This intermediary resolves the conflict between firewall security and control signaling delivery.
2Adaptability or versatility
If all communication pathways traverse heterogeneous networks and secure boundaries, then network flexibility is improved, but NAT traversal and firewall restrictions complicate session management
Solution Approach 1:
The patent makes the telephony network universal by using it to carry both control signaling and media information for different communication methods. The same telephony pathway can support various communication protocols (VoIP, video conferencing, instant messaging) without requiring separate dedicated pathways for each type of traffic.
Solution Approach 2:
The patent adds a dimensional separation between control signaling and media information transport. Instead of treating all traffic as a single dimension over the Internet, it creates two distinct dimensions: one for control (via telephony) and one for media (via data network), making session management more manageable across heterogeneous networks.
3Object-affected harmful factors
If firewalls inspect and clear each packet, then security is improved, but packet latency increases and real time sessions are disrupted
Solution Approach 1:
The patent extracts control signaling traffic from the data network pathway and places it on a separate telephony network pathway. This extraction removes the control signaling packets from the firewall inspection queue, allowing real-time coordination without the latency imposed by packet-by-packet firewall analysis.
Data Source
AI summary
The present invention, in one embodiment, is directed to the use of a communication pathway traversing a digital telephone network to handle a portion of the signaling traffic associated with a communication method performed over the Internet.