(Simplify Set-Top-Box Software Updates
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Rapid innovation in set-top-box software is enabling compelling new services for consumers. To deliver those services, however, service providers must ensure that all subscriber set-top boxes (STBs) are updated with the correct software. This article examines the challenges of updating STB software and looks at some potential solutions.
STB Update Challenges
Each part of a video delivery system has its operational issues, but managing the set-top boxes (STBs) at subscriber premises is one of the most challenging. There are five major hurdles to overcome:
Scalability--STBs can number in the hundreds of thousands, and the update system must be able to serve them all in a timely manner without overloading the distribution network.
Variety--Within a single network, there are often different makes and versions of STBs scattered among the user base, and the update system must be able to track STB status and ensure that each STB is updated properly with the appropriate software.
Multi-part software infrastructure--Each STB has multiple types of software that require updates, including the operating system (firmware), middleware (user interface, and applications), and content security and digital rights management (DRM) software.
Multiple update systems--Each vendor of STB software components may have its own update system. For example, middleware and encryption providers may offer their own systems for updating only their products, while STB vendors offer separate systems for operating system updates. This fragmentation also leads to multiple STB databases, so it may be difficult to do overall reports on all STB assets in a network.
Lack of integration--The multiple update products for STBs are not integrated with the overall network management system. Providers must learn and use several different products, and it is difficult and time-consuming to track which STBs have which versions of which software at any given time.
Solution Requirements
Ideally, there should be one system that manages all STB updates of any kind.
In this volume of Best of BYTE, we explore the emergence of some heuristic algorithms. Although we have only scratched the surface of this intriguing subject, we hope we've suggested the potential of the synthesis of heuristics and algorithms.
