Patent ID: 6570857
Filing Date: 2003-05-27
Classification: H04B,H04W,Y02D

Abstract:
A method of operating a system comprising a wireless master unit and one or more wireless slave units, wherein each of the one or more wireless slave units has a unique identifier, the method comprising the steps of:broadcasting a paging beacon packet to each of the one or more wireless slave units at fixed intervals during a master-to-slave time slot; receiving the paging beacon packet in each of the one or more wireless slave units; in each of the one or more wireless slave units, determining whether the received paging beacon packet includes the unique identifier belonging to the wireless slave unit; in each of the one or more wireless slave units, retrieving a temporary address from the paging beacon packet if the received beacon packet included the unique identifier belonging to the wireless slave unit; and in each of the one or more wireless slave units, transmitting 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.