LPWAN Authentication Engine for PCaaS Battery Conservation

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Solution Overview

Problem

Existing information handling systems face challenges in managing authentication and subscription for on-demand services while maintaining low power consumption, especially in mobile devices that need to remain always-connected via low power wide area networks (LPWAN), which complicates battery life and efficiency.

Innovation Solution

Implementing a low power communications engine that operates in an out-of-band environment, allowing for constant connectivity and subscription verification over LPWAN, even when the device is in a sleep state, using a remote management card or wireless interface adapter with embedded processors, enabling efficient battery management and seamless access to in-band applications.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the device maintains always-on connectivity via LPWAN radio system, then constant access to on-demand services is achieved, but battery consumption increases

Engineering Contradiction:
Improveconstant connectivityVSAvoidbattery consumption
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The system divides connectivity functions into two separate components: an always-on LPWAN radio for maintaining constant connection and authentication, and a separate high-power radio for data transfer. This segmentation allows the low-power radio to remain active continuously without significantly draining the battery, while the high-power radio is only activated when needed for actual data communication.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The LPWAN radio performs preliminary authentication and subscription verification before the device fully wakes up or activates higher-power communication modes. By handling authentication in advance through the low-power radio, the system avoids the need to fully activate the device's power-consuming components just to verify connectivity and service access rights.

Inventive Principle:
Principle #10Preliminary action

2Use of energy by moving object

If the device enters sleep state to conserve battery, then power consumption is reduced, but ability to verify subscription and maintain connectivity is compromised

Engineering Contradiction:
Improvebattery conservationVSAvoidsubscription verification capability
Core Design Contradiction:
Use of energy by moving objectVSReliability

Solution Approach 1:

The authentication and subscription verification functions are extracted from the main device processor and relocated to a separate always-on LPWAN radio module. This extraction allows the verification process to occur independently in the low-power domain without requiring the main device to wake from sleep state, thus preserving battery life while maintaining verification capability.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The LPWAN radio acts as an intermediary between the sleeping device and the service provider's authentication server. It handles all communication related to subscription verification and authentication, allowing the main device to remain in sleep state while the intermediary maintains the connection and performs verification on behalf of the device.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Loss of time

If full authentication process is performed when device wakes up, then service access is granted, but time and power are wasted due to delayed connectivity

Engineering Contradiction:
Improveauthentication delayVSAvoidpower waste
Core Design Contradiction:
Loss of timeVSUse of energy by moving object

Solution Approach 1:

The system performs authentication actions preliminarily by maintaining the LPWAN radio in an always-on state that continuously verifies subscription status and maintains authentication tokens. This preliminary authentication ensures that when the device needs to access services, the authentication is already complete or can be quickly resumed, eliminating delays and avoiding the waste of power from performing full authentication cycles upon each wake-up.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS11349823B2System and method for PC as a service authentication and subscription via low power wide area network communications
Publication Date: 2022.05.31 DELL PROD LP
  • US11349823B2 patent drawing
  • US11349823B2 patent drawing
  • US11349823B2 patent drawing

AI summary

A method of managing access to on-demand cloud services may comprise receiving at a PCaaS cloud management service information handling system log-in credentials from a remote information handling system via a low-power wide area network communication link, executing code instructions to determine if the log-in credentials are associated with an existing subscriber, if the log-in credentials are associated with an existing subscriber whose subscription is not expired, transmitting via the wireless adapter a verification of the log-in credentials to the remote information handling system, establishing via the wireless adapter a high-speed wireless communication link with the remote information handling system, and transmitting code instructions via the wireless adapter of one or more in-band applications associated with the existing subscriber via the high-speed wireless communication link.