Quantifying Landed Unit Cost Penalties in Global Cellular Deployments
Landed cost penalties in cellular deployments compound through regional certification surcharges, carrier profile fees, tariff codes and roaming airtime multipliers.
Firmware over the Air Payload Cost
Meaning
Data overhead represents the financial and temporal resources consumed when transmitting software updates to a remote device via a cellular network. The firmware over the air payload cost is calculated based on the size of the update file and the data rate charged by the service provider. Larger files take longer to download and require more energy, which can be a burden for battery-operated devices.
Transmission Volume
Minimizing the size of the update is the primary method for reducing the associated expenses. The firmware over the air payload cost is often mitigated by using delta updates, which only send the binary differences between the old and new versions. This approach can reduce the payload size by over ninety percent compared to a full image flash.
Energy Impact
Downloading a large file requires the radio to remain in a high-power state for an extended period. This increased firmware over the air payload cost is not just monetary but also involves a depletion of the energy stored in the device. For a device in a remote location, a single large update could reduce the total service life by several months.
Network Economics
Service providers often have different pricing tiers for different types of data traffic. Managing the firmware over the air payload cost involves scheduling updates during off-peak hours or using specific low-cost data plans designed for machine-to-machine communication. A successful deployment strategy balances the need for security patches with the budget allocated for data usage.
This planning ensures that the fleet remains secure and functional without exceeding the financial projections of the project.