Base Station Firmware Caching for Wireless Network Load Reduction
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Solution Overview
Problem
In wireless communication environments, some user equipment may miss critical firmware updates due to being switched off or in emergency mode, and device management servers face network overload when providing Firmware Over-The-Air (FOTA) services to a large number of devices, leading to inefficiencies in firmware upgrades.
Innovation Solution
A method and apparatus where a base station receives notifications from a device management server about new firmware versions, fetches and caches updates from a FOTA server, and then sends paging messages to user equipment, allowing for efficient firmware updates even when devices are idle, thereby reducing network load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the device management server provides FOTA service to all user equipments directly, then firmware updates can be delivered to devices, but the core network becomes overloaded with signaling and data transfers
Solution Approach 1:
The patent segments the FOTA service delivery process by introducing base stations as intermediate nodes. Instead of direct server-to-device communication, the system divides the network into server-level (update management) and base station-level (update caching and delivery) functions, distributing the network load across multiple base stations rather than concentrating it at the core server
Solution Approach 2:
The patent implements preliminary action by having base stations proactively fetch and cache firmware updates from the FOTA server before users request them. Base stations pre-download updates, store them locally in cache memory, and prepare them for distribution, thereby reducing real-time network traffic when multiple devices simultaneously request updates
2Reliability
If user equipment checks for firmware updates frequently, then devices can receive updates promptly, but network signaling load increases
Solution Approach 1:
The patent implements self-service by enabling base stations to autonomously monitor and detect which user equipments need firmware updates. Instead of devices continuously polling the server, the base station independently identifies devices requiring updates, checks local cache for available updates, and initiates delivery without extensive signaling between devices and the core server
Solution Approach 2:
The base station acts as an intermediary between the FOTA server and user equipments. It receives update information from the server, caches it locally, and then communicates with devices only when necessary, reducing the signaling frequency and load on the core network while maintaining timely update delivery
3Ease of operation
If firmware updates are delivered on-demand from the FOTA server, then devices receive updates when needed, but devices switched off or in emergency mode miss critical updates
Solution Approach 1:
The patent applies preliminary action by having base stations proactively push firmware update notifications to user equipments instead of waiting for devices to request updates. Base stations actively page devices and initiate update transfers, ensuring that even devices that were switched off or in emergency mode can receive critical updates as soon as they reconnect to the network
Solution Approach 2:
The patent ensures continuity of useful action by implementing persistent update delivery mechanisms at the base station level. The base station continuously attempts to deliver cached firmware updates to target devices through paging and retransmission, maintaining the update delivery process uninterrupted despite device power states or network conditions, thereby ensuring reliable update coverage
Data Source
AI summary
A method and an apparatus for providing a firmware over the air service to user equipments in a wireless network environment are provided. In one embodiment, a device management server sends a notification to a base station indicating availability of a new firmware version for associated user equipments. The base station obtains a firmware update resource identifier from the device management server upon receiving the notification. Further, the base station fetches a firmware update associated with the new firmware version from a Firmware Over-The-Air (FOTA) server and caches the firmware update in a cache memory. Thereafter, the base station sends a paging message indicating availability of the cached firmware update to the user equipments currently attached to the base station. Upon receiving a paging response from the respective user equipments, the base station transmits the cached firmware update to the respective user equipments over a wireless air interface.