Patent ID: 6044086
Filing Date: 2000-03-28
Classification: H04J,H04W

Abstract:
A method of transmission of system broadcast control signals in time slots within fixed length time frames, comprising:coding said system broadcast control signals into data units, said system broadcast control signals representative of at least one of:a paging message addressed to a specific subscriber unit,a message allocating traffic channels in response to a request from a subscriber unit to set-up a call,a message addressed and sent to a specific subscriber unit despite no traffic channel being allocated,a list of channels available to subscriber units, anda list of time slots available for call set-up requests,fragmenting each data unit into fragmentssending each fragment in a different time slot of one of the fixed length time frames,transmitting the fragmented system broadcast control signal from a base station to at least one subscriber unit, wherein the data units are transmitted on all of the plurality of radio frequency carrier signals transmitted from the base station and the transmission of frames on all the radio frequency carriers are synchronized so as to enable the at least one subscriber unit to correctly receive system control signalling from any of radio frequency carriers received.