Telematics Unit Network Subscription Swap
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Solution Overview
Problem
Existing telematics systems face challenges in seamlessly updating wireless network communication parameters when a subscription with one mobile wireless network service provider is swapped for another, disrupting connectivity and service provision.
Innovation Solution
A method and system for updating data structures in vehicular telematics units to reflect changes in wireless network service providers, involving the reception of a new HPLMN identifier, identification of matching APN data structures, and activation of the new APN data structure, along with an over-the-air subscription swap facilitated by a service provider server to ensure continuous connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a subscription swap between mobile wireless network service providers is performed, then the telematics unit can utilize a different network service provider, but connectivity is disrupted and service provision is interrupted during the transition
Solution Approach 1:
The system performs preliminary actions by obtaining the target HPLMN identifier before the subscription swap is completed, and prepares the APN data structure in advance. This allows the telematics unit to quickly switch to the new network parameters without interruption, as the new configuration is ready to be activated immediately when the swap completes.
Solution Approach 2:
The system implements feedback by monitoring the subscription swap status and using the provided HPLMN identifier to verify and update the correct APN data structure. The telematics unit receives confirmation of the swap completion and actively updates its network parameters based on this feedback, ensuring seamless transition without connectivity loss.
2Measurement precision
If the telematics unit waits for subscription swap completion before updating network parameters, then accuracy is maintained, but service provision is delayed
Solution Approach 1:
The telematics unit performs preliminary actions by obtaining and validating the target HPLMN identifier before the subscription swap completes. The APN data structure is prepared in advance with the correct parameters, so that when the swap completes, the update can be activated immediately without delay, maintaining both accuracy and timeliness.
Solution Approach 2:
The system uses the HPLMN identifier as an intermediary key to match and select the correct APN data structure. This intermediary allows the system to prepare the correct network parameters in advance and quickly activate them upon swap completion, eliminating waiting time while ensuring accurate parameter updates.
3Reliability
If the telematics unit proactively updates network parameters before subscription swap completion, then service continuity is maintained, but parameter accuracy may be compromised
Solution Approach 1:
The system uses feedback by receiving the target HPLMN identifier from the network and verifying it against the stored APN data structures. This feedback mechanism ensures that the telematics unit updates to the correct network parameters with high accuracy, while maintaining service continuity through the seamless transition enabled by the pre-prepared APN data.
Solution Approach 2:
The HPLMN identifier serves as an intermediary that bridges the subscription swap process and the APN parameter update. By using this intermediary, the system can proactively prepare the correct parameters with accurate matching, ensuring both service continuity and parameter accuracy during the transition.
4Measurement precision
If manual configuration of network parameters is performed, then precision is high, but ease of operation deteriorates
Solution Approach 1:
The system implements self-service by automatically obtaining the target HPLMN identifier from the network, matching it with the correct APN data structure, and activating the appropriate parameters without user intervention. This automated process maintains high precision in parameter configuration while dramatically improving ease of operation for subscription swaps.
Solution Approach 2:
The HPLMN identifier acts as an intermediary that enables automated, precise matching between the subscription swap event and the correct APN configuration. This intermediary allows the system to perform accurate parameter updates automatically, eliminating manual configuration requirements while maintaining high precision.
Data Source
AI summary
A method for implementation at a processor of a vehicular telematics unit is described. The method allows data structures formatted to store one or more wireless network communication parameters to be updated in response to a swap of a subscription with one network service provider for a subscription with a different network service provider. The method includes receiving, from a network access device of the vehicular telematics unit, a home public land mobile network (HPLMN) identifier corresponding to a wireless network service provider corresponding to an active subscription. The method also includes identifying, in a set of one or more access point name (APN) data structures each having a public land mobile network (PLMN) identifier field, a matching APN data structure having the HPLMN identifier stored at its PLMN element and designating the matching APN data structure as active.