IP Multicast Communication Sessions 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 for devices within a local area network.

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

VSEngineering Contradiction Analysis

1Reliability

If SIP protocol handshaking is used to establish communication sessions, then communication reliability is improved, but device complexity and computational overhead increase

Engineering Contradiction:
Improvecommunication reliabilityVSAvoidprotocol complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent extracts the complex SIP handshaking protocol from the communication establishment process and replaces it with a simplified session initiation message. This removes the disturbing complexity while preserving the essential function of session establishment, directly resolving the contradiction between reliability and device complexity.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

Instead of using complex handshaking to establish sessions and then managing them with additional protocols, the patent inverts the approach by using simple broadcast messages at the network layer to initiate and terminate sessions. This reverses the traditional top-down protocol architecture and eliminates the need for complex application-layer handshaking.

Inventive Principle:
Principle #13The other way round (Inversion)

2Reliability

If SIP protocol handshaking is used to establish communication sessions, then communication reliability is improved, but energy consumption increases

Engineering Contradiction:
Improvecommunication reliabilityVSAvoiddevice energy consumption
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent extracts the energy-intensive SIP handshaking process from the communication system and replaces it with lightweight network layer messages. This removal eliminates the harmful energy consumption while maintaining the essential session management function.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent uses simple, disposable session initiation and termination messages instead of complex, long-lived protocol handshakes. These lightweight messages consume minimal energy and are discarded after use, directly reducing the energy cost of communication session management.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

3Reliability

If complex handshaking protocols are used, then session management reliability is improved, but ease of operation deteriorates

Engineering Contradiction:
Improvesession management reliabilityVSAvoidcommunication simplicity
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent extracts the complex handshaking and troubleshooting requirements from the communication process and replaces them with simple broadcast messages. This removal directly improves ease of operation while maintaining session management reliability through the structured message format.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent enables devices to autonomously establish and terminate communication sessions using simple broadcast messages without requiring complex handshaking or external troubleshooting. Each device independently manages its sessions, improving ease of operation while maintaining reliability through the self-service mechanism.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS12395370B2Methods and systems for communication
Publication Date: 2025.08.19 COMCAST CABLE COMM LLC
  • US12395370B2 patent drawing
  • US12395370B2 patent drawing
  • US12395370B2 patent drawing

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.