Abstract: A system comprises a wireless master unit and one or more wireless slave units, each having a unique identifier. When a wireless slave unit is active, it is addressed by one of a limited number of temporary addresses. A PARK mode enables a wireless slave unit to be in an idle state during which its temporary address is deallocated, enabling that address to be assigned to another wireless slave unit. To page a parked slave, a paging beacon packet is broadcast to, and received by, each of the wireless slave units at fixed intervals during a master-to-slave time slot. Each wireless slave unit determines whether the received paging beacon packet includes its unique identifier. If so, the wireless slave units retrieves a temporary address from the paging beacon packet. The wireless unit transmits a response to the wireless master unit during a subsequent slave-to-master time slot if the received paging beacon packet included the unique identifier belonging to the wireless slave unit.

Abstract: A method is provided for generating a domain name to uniquely identify a selected device in a class of devices when the selected device is connected to a fixed network such as the Internet, the selected device being disposed for intermittent connection to and disconnection from the fixed network. The method includes the step of embedding a permanent address into the selected device which uniquely distinguishes it from all other devices in the class. A domain name is generated from the permanent address, in textual form such as hexadecimal, which is adapted for use with a specified communication protocol such as HTTP. The domain name also includes a component identifying a second independent network to which the selected device and other devices in the class are configured.