Arrangemang med ett antal första och andra enheter som kommunicerar med varandra via trådlösa förbindelser

摘要

The arrangement has a number of units that can communicate with each other via a wireless connection system for transmission of messages which comprise control information (commands) and/or data. The units have access to an actual transmission medium in sequential time intervals. The arrangement comprises a network area in which the units exercise their communication in a network. First units are adapted to establish or be included in two or more geographically separated local networks. An Independent claim is included for a method of connecting units to a network system.