Patent ID: 8625437
Filing Date: 2014-01-07
Classification: H04W

Abstract:
1. A professional radiocommunication network infrastructure operating in packet mode, said infrastructure comprising: a site controller with a specified geographic area comprising at least one base station capable of ensuring radio transmission and reception with at least one user terminal found in at least one cell attached to said base station; centralized management means comprising: at least one centralized application configured to communicate with a first application in said terminal; centralized supervision means configured to detect if said infrastructure is in a nominal or isolated operating state; and centralized means for associating with a centralized packet network to establish access between said at least one centralized application and said first application during operation of said infrastructure detected according to a nominal state; said site controller comprising: at least one local communication application configured to communicate with a second application in said user terminal; local supervision means configured to detect if said infrastructure is in a nominal or isolated operating state; user terminal authentication and control means configured to authenticate the user terminals belonging to said professional network; a distribution gateway configured to ensure radio reception and transmission with said at least one base station; and local means for attachment to a local packet network to establish access between said local communication application and said second application during operation of said infrastructure detected according to an isolated state, wherein when said infrastructure is found in a nominal operating state, the following is allocated to each user terminal situated in the specified geographic area and attached to said site controller: a centralized access channel connecting said distribution gateway to said centralized application via first attachment means, said user terminal being able to be attached to said first attachment means via said distribution gateway by means of a centralized data channel that is dynamically allocated to it, said centralized data channel passing through said centralized access channel; a local access channel connecting said distribution gateway to said local communication application via second attachment means, said user terminal being able to be attached to said second attachment means via said distribution gateway by means of a local data channel that is dynamically allocated to it, said local data channel passing through said local access channel; and when said infrastructure is in an isolated operating state in the course of which access to said centralized management means is interrupted, only said local access channel is allocated to each user terminal situated in the specified geographic area and attached to said site controller, said user terminal being able to be attached to said second attachment means via said distribution gateway by means of said local data channel that is dynamically allocated to it and passing through said local access channel.