IP Multicast Session Setup Without SIP Handshaking
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Solution Overview
Problem
Existing Internet Protocol-based communication systems, such as VOIP, require computationally complex handshaking and troubleshooting due to protocols like SIP, making them resource-intensive and costly to manage, especially for local area network communications between IP-enabled devices.
Innovation Solution
Implementing IP multicast communication sessions with defined start and end times at the network layer, using a single message to initiate and terminate sessions, reducing the need for complex handshaking and computational overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If SIP protocol is used for VOIP communication, then communication sessions can be established between devices, but computational complexity and management overhead increase significantly
Solution Approach 1:
The patent extracts the session management functionality from the application layer SIP protocol and moves it to the network layer through IP multicast group management. By using IP multicast addresses to represent communication sessions and leveraging existing IP multicast infrastructure, the complex SIP handshaking is replaced with simpler network layer mechanisms, reducing device complexity while maintaining session establishment capability
Solution Approach 2:
The patent introduces IP multicast group membership as an intermediary mechanism between devices. Instead of devices directly performing complex SIP handshaking, they use IP multicast group joining and leaving as a mediator to establish and terminate sessions. This intermediary simplifies the interaction model while ensuring reliable session management through the network layer
2Adaptability or versatility
If SIP protocol is used for VOIP communication, then calling features are enabled, but resource consumption and management costs increase
Solution Approach 1:
The patent extracts the resource-intensive session management logic from application layer protocols and relocates it to the network layer through IP multicast mechanisms. By using pre-configured IP multicast groups and leveraging network layer routing tables, the system maintains calling features while eliminating redundant computational overhead at device level, thus reducing energy consumption
Solution Approach 2:
The patent enables devices to automatically manage their session state through IP multicast group membership without requiring complex application layer handshaking. Devices self-manage session establishment by joining multicast groups and self-terminate sessions by leaving groups, eliminating the need for continuous SIP signaling and reducing computational resource consumption while preserving calling functionality
3Reliability
If complex handshaking protocols are used, then communication sessions can be properly established and terminated, but processing time and session setup delay increase
Solution Approach 1:
The patent segments the session management process into network layer operations (IP multicast group joining/leaving) and application layer content exchange. By separating session establishment from content communication, the system achieves rapid session setup through simple network layer operations while maintaining reliable session termination through IP multicast group management, significantly reducing session setup time compared to traditional SIP handshaking
Data Source
AI summary
Communication techniques (e.g., IP-based communications, multicast communications, unicast communications, wireless communications, etc.) are described. Devices may establish discrete communication sessions, with defined start and end times determined at the network layer of an Open Systems Interconnection (OSI) model, to exchange content.