On-Demand Activation for Generic SIM Cards
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Solution Overview
Problem
Mobile network operators incur significant costs due to inactive SIM card subscriptions, which are stored in large quantities at various point-of-sale locations, and managing multiple types of SIM cards increases these costs further, especially for prepaid services.
Innovation Solution
A method utilizing an On Demand Activation (ODA) application and database to activate SIM cards by updating them with necessary information when inserted into mobile equipment, connecting to the Home Location Register (HLR) and Authentication Center (AUC) to set up subscriptions, allowing for generic profile SIM cards with temporary data to support multiple subscriptions and reducing the need for multiple SIM card types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If SIM cards are pre-activated and stored in large quantities at point-of-sale locations, then customers can immediately use the cards after purchase, but the operator incurs significant costs for inactive subscriptions and resource consumption
Solution Approach 1:
The SIM cards are pre-configured with temporary subscription data and basic information during manufacturing, allowing them to be immediately recognized by the network. The actual full activation occurs later when the customer first uses the card, combining preliminary preparation with delayed full activation to reduce costs of inactive cards
Solution Approach 2:
The system automatically activates the SIM card when the customer inserts it into a mobile device and the device connects to the network. The ODA application detects the temporary IMSI, retrieves the permanent subscription data from the database, and completes the activation process automatically without requiring manual intervention from operators or customers
2Adaptability or versatility
If the operator maintains multiple types of SIM cards for different PLMNs and geographical areas, then customers can find applicable cards at any point of sale, but the cost and complexity of managing multiple SIM card types increases significantly
Solution Approach 1:
A single universal SIM card design is used for all PLMNs and geographical areas. The card contains a temporary IMSI that allows initial network access, and the ODA system dynamically assigns the appropriate permanent IMSI and subscription data based on the customer's location and the PLMN they connect to, eliminating the need for multiple pre-configured SIM card types
Solution Approach 2:
The SIM card's subscription parameters (IMSI, MSISDN, service profile) are not fixed during manufacturing but are dynamically changed and assigned after activation. The ODA system modifies the card's parameters based on real-time network conditions, customer location, and service requirements, allowing one card type to serve multiple purposes
Data Source
AI summary
The ODA database (4) contains SIM card (1) information related to the cards that shall be activated. When a SIM card (1) is inserted into a mobile equipment, such as a mobile telephone, and the mobile equipment is switched on, the ODA (2) is connected to the SIM card for updating the SIM card with a card definition file. The ODA (2) is arranged to be connected to a HLR/AUC (5) in order to transfer information stored on the updated SIM card, and the HLR/AUC is arranged to set up a subscription for the SIM card.