Removable pSIM Accessory With Shared Wireless Charging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
There is a need for a removable accessory that allows the use of physical subscriber identity module (pSIM) cards with wireless devices that do not have a slot or tray for pSIMs, particularly for devices with embedded UICCs (eUICCs), as some regions and users still rely on pSIMs and logistical distribution of eSIM-only devices can be limited.
Innovation Solution
A removable pSIM card accessory, such as a case or wallet, is designed to include a pSIM slot or tray and can be coupled to an eUICC-equipped wireless device via wireless or wired connections, using power circuitry to support pSIM functionality and wireless charging, enabling communication with cellular networks through protocols like NFC, UWB, or Bluetooth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If pSIM card accessories are added to eUICC devices, then pSIM compatibility is improved, but device complexity increases
Solution Approach 1:
The pSIM card functionality is extracted into a separate removable accessory rather than being integrated into the main device. This extraction keeps the core wireless device simple while allowing optional pSIM capability through the accessory, reducing the complexity burden on the primary device design
Solution Approach 2:
The pSIM card accessory is designed to be universally compatible with multiple wireless devices through standard wireless communication protocols. It can serve multiple functions including cellular network access, identity authentication, and potential additional services, justifying the added complexity through multi-functional capability
2Reliability
If continuous power is supplied to pSIM cards in removable accessories, then network connectivity reliability is improved, but energy consumption increases
Solution Approach 1:
The system maintains continuous power supply to the pSIM card accessory when connected to the wireless device, ensuring uninterrupted network connectivity. The power is transferred continuously through the wireless power transfer system, keeping the pSIM card and accessory circuitry powered without interruption, which is essential for maintaining reliable cellular connection
Solution Approach 2:
The wireless power transfer operates in periodic cycles, transferring power in intervals rather than truly continuous flow. This periodic power transfer reduces overall energy consumption compared to constant power supply, while still maintaining sufficient power levels for the pSIM card to remain operational and connected to the network
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables pSIM card usage with eUICC devices, ensuring continuous power supply and seamless network access, addressing the limitations of eUICC-only devices in regions requiring pSIMs and enhancing device flexibility.
Implementation Method 1
The removable accessory can include wireless charging circuitry to allow for wireless power transfer to the removable accessory
Data Source
AI summary
The embodiments described herein regard removable accessories for a wireless device. A removable accessory for a wireless device can include hardware and a power charging capability to allow the wireless device to use functions of the removable accessory and to wirelessly charge the removable accessory. The removable accessory can be charged wirelessly directly from the wireless device or from an external wireless charging pad. The removable accessory can be configured to coordinate shared wireless charging from an external wireless charging pad to allow charging for both the wireless device and the removable accessory.