PNM Controller SIP Request Redirection for Access Control

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Solution Overview

Problem

Current personal network management systems lack efficient mechanisms for managing multiple devices and controlling access within personal networks, particularly in scenarios where users have multiple devices with varying capabilities and service support, leading to challenges in secure connection management and access control.

Innovation Solution

A system and method that utilize a Personal Network Management (PNM) Controller to redirect Session Initiation Protocol (SIP) requests, incorporating specific identifiers and headers to differentiate PNM access control requests, allowing for secure and controlled communication between devices within a personal network, enabling features like call forwarding and access list management.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If users employ multiple devices for personal network communication, then service versatility and user convenience are improved, but access control complexity and security management difficulty increase

Engineering Contradiction:

Improveservice versatilityVSAvoidaccess control complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent introduces a Personal Network Management (PNM) system as an intermediary that centralizes access control functionality. The PNM controller receives SIP requests, checks access control lists, and manages device authorization centrally, relieving individual devices from complex access control logic while enabling versatile multi-device communication

Inventive Principle:

Principle #24Intermediary (Mediator)

2Productivity

If devices within personal network are allowed to communicate freely, then communication efficiency and user convenience are improved, but network security and privacy protection deteriorate

Engineering Contradiction:

Improvecommunication efficiencyVSAvoidnetwork security

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent implements preliminary access control by maintaining and checking access control lists before allowing communication. The PNM controller pre-establishes which devices are authorized to communicate with each other, and performs access checks before routing SIP requests, ensuring security is built into the communication flow rather than added as a post-processing constraint

Inventive Principle:

Principle #10Preliminary action

3Device complexity

If traditional SIP request handling is used without PNM identifiers, then system simplicity is maintained, but PNM access control functionality cannot be implemented

Engineering Contradiction:

Improvesystem simplicityVSAvoidPNM access control functionality

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The patent embeds PNM control functionality within the existing SIP protocol framework by adding identifiers and headers to SIP requests. The PNM controller is nested within the broader network infrastructure, and access control logic is nested within the SIP request handling flow, allowing new functionality to be integrated without replacing the entire system architecture

Inventive Principle:

Principle #7Nested doll (Nesting)

Data Source

PatentUS10033771B2Personal network access control system and method

Publication Date: 2018.07.24 MALIKIE INNOVATIONS LTD

AI summary

A server is provided that includes a processor such that for a Session Initiation Protocol (SIP) request containing a Uniform Resource Identifier (URI) identifying the first device, the processor is programmed to promote adding a URI and redirecting the SIP request to a second device. The added URI used by the second device to invoke a Personal Network Management (PNM) Controller function.