Patent ID: 6195327
Filing Date: 2001-02-27
Classification: H04W

Abstract:
An interference controller 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, 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, the interference controller comprising:a channel controller arranged to allocate a number of said plurality of code division multiplexed channels as a channel pool of code division multiplexed channels available for the establishment of said wireless links;an analyzer for receiving parameters pertaining to a wireless link within the cell indicative of whether that wireless link is subject to interference from signals generated by said other cells, the analyzer being arranged to compare those parameters with predetermined criteria and to generate an output signal dependent on the comparison;a channel controller being responsive to the output signal from the analyser, to selectively reduce the number of code division multiplexed channels in the channel pool in order to reduce the effect of the interference from said other cells.