Bidirectional radio frequency communication method for system e.g. alarm system, involves authorizing transmission of gateway towards peripheral modules during one time window, where another window is dynamically managed by gateway

摘要

The method involves authorizing transmission of peripheral modules (3) towards a gateway (2) during two time windows. An existence of a possible spontaneous transmission of the modules is verified at a level of the gateway during a third time window. A fourth time window is dynamically managed by the gateway. Transmission of the gateway towards one or all modules is authorized during a fifth time window. An independent claim is also included for an alarm system comprising a central module forming gateway.