With the advent of faster 4G mobile broadband networks and the proliferation of a rich ecosystem of smartphone applications in the commercial domain, expectations and demand for much more sophisticated and high-bandwidth applications are also on the rise within professional users sectors such as public safety, utilities, transportation, etc. In this context, this paper analyzes the extension of the LTE /LTE-A business case to the professional mobile radio users. To that end, an overview of the technical features that are expected to turn the LTE standard into a mission-critical capable technology is first addressed. Afterwards, a number of potential service delivery models for private mobile broadband communications are identified, discussing the pros and cons of each value proposition ; Peer Reviewed ; Postprint (published version)