Abstract: A network device that controls the communication of data frames between stations includes an address table that has a number of entries including address information and data forwarding information. The network device also includes a timer that defines an aging cycle associated with the address table. When the timer times out, the timer sends a signal to an aging device that initiates an aging process on the address table. The timer also transmits a time-out signal to interrupt logic on the network device. The interrupt logic receives the time-out signal and transmits an interrupt signal to an external device. The external device may then perform an aging process on an address table stored in its memory.

Abstract: The present invention provides an interference controller and method for limiting in one cell the effect of interference generated by other cells of a wireless telecommunications system, each cell of the wireless telecommunications system having a central terminal and a plurality of subscriber terminals, communication between a central terminal and a subscriber terminal being arranged to occur over a wireless link, and a plurality of code division multiplexed channels being provided within a single frequency channel to enable data items pertaining to a plurality of wireless links to be transmitted simultaneously within different code division multiplexed channels of said single frequency channel.

Abstract: A method of operation of a network (10) of radio stations (e.g. 11, 12 and 13) in which each radio station communicates with at least two other radio stations. A message (32) is sent and a corresponding reply (35) is received between first and second stations (11 and 12). Similar messages are sent between second and third stations (12 and 14) and the first and third stations (11 and 14). A time delay is measured between sending of each message and receiving the corresponding reply. Distances are calculated between each station and each other station and, from the distances, locations for the second and third stations relative to the first station are calculated.