SIM Eligibility Checks for 5G OTA Firmware Updates

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

In modern telecommunication systems, devices transitioning to 5G capabilities face issues where firmware updates are pushed before SIM profiles are updated, leading to device malfunction, and switching to new carriers with unsupported SIM profiles can cause crashes, highlighting the need for ensuring SIM eligibility before updating firmware.

Innovation Solution

A system where a device server connects with a carrier server to perform SIM profile checks before transmitting firmware updates, using FOTA and SIM eligibility components to verify eligibility through batch polling, instance polling, or SIM card changes, ensuring infrastructure support for 5G features is in place.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If firmware updates are pushed before SIM profile updates, then device functionality is improved, but device reliability deteriorates due to potential malfunctions

Engineering Contradiction:

Improvefirmware update speedVSAvoiddevice reliability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The system performs SIM profile eligibility checks before pushing firmware updates. The device server queries the carrier server to verify SIM profile compatibility with the upcoming firmware version, ensuring that SIM profiles are updated or validated beforehand. This preliminary verification prevents device malfunctions by ensuring compatibility before the firmware update is applied.

Inventive Principle:

Principle #10Preliminary action

2Loss of time

If firmware updates are pushed without SIM eligibility verification, then update deployment is accelerated, but device stability deteriorates due to crashes

Engineering Contradiction:

Improveupdate deployment timeVSAvoiddevice stability

Core Design Contradiction:

Loss of timeVSReliability

Solution Approach 1:

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The carrier server acts as an intermediary between the device server and the SIM profile validation process. The device server sends SIM identifiers to the carrier server, which verifies whether the SIM profiles support the features enabled by the firmware update. This intermediary verification mechanism ensures device stability without significantly delaying the update deployment process.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If SIM eligibility checks are performed for all devices, then update compatibility is improved, but network bandwidth usage increases

Engineering Contradiction:

Improveupdate compatibilityVSAvoidnetwork bandwidth usage

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The system performs SIM eligibility checks selectively rather than universally. The device server determines whether a SIM eligibility check is necessary based on device characteristics, firmware update type, and carrier configuration. Only devices that require verification undergo the SIM check process, reducing unnecessary network traffic while maintaining compatibility for devices that need it.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The system performs SIM eligibility checks partially rather than completely for all devices. By implementing conditional checking based on device profiles and update requirements, the system achieves sufficient compatibility verification without the excessive network bandwidth consumption that would result from checking every device regardless of need.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS11490245B2Controlling software over-the-air (OTA) updates based on SIM eligibility

Publication Date: 2022.11.01 T MOBILE US INC

AI summary

Techniques for controlling software over-the-air (OTA) updates based on SIM eligibility for a device are discussed herein. The device may include a 5G SA capable device with 5G features that may not be enabled yet. To enable support for a new 5G feature, the system may update the SIM profile on the SIM card to indicate infrastructure support and the firmware to enable function calls for the new 5G feature. However, the SIM profile has to include infrastructure support before enabling function calls for the new 5G feature; otherwise, an incorrect firmware update may cause the device to cease functioning. The present system may include OTA components on a device server to connect with a network API on the carrier server and perform SIM profile checks before transmitting firmware updates to an OTA agent on the device.