Cellular mobile telephone network and method of operating the same
AssigneeLucent Technologies Inc.
InventorsDavid Lahiri Bhatoolaul, Qiang Cao, Patrick Georges Venceslas Charriere, Seau Sian Lim
Life of this patent
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Abstract
A cellular mobile telephone network is disclosed in which a mobile station requests service in data modulated on a common random access channel (RACH) in a format associated with first a cell in which the mobile station is located. Base stations in cells neighbouring the first cell, are configured to demodulate the RACH message burst having the format associated with the first cell, and to pass the demodulated data to a radio network controller (RNC). This enables the average power required for a successful RACH transmission to be reduced.
Claims10
A cellular mobile telephone network, wherein a mobile station requests service in data modulated on a common random access channel (RACH) in a format associated with first a cell in which the mobile station is located, and wherein base stations in cells neighbouring the first cell, are configured to demodulate the RACH message burst having the format associated with the first cell, and to pass the demodulated data to a radio network controller (RNC);
- and wherein the RNC is operative to instruct a base station in the first cell to assign first hardware to search for RACH data having physical channel attributes belonging to mobile stations located in a handover region, and to assign second hardware to search for RACH data having the physical channel attributes belonging to mobile stations located in a non-handover region.
A method of operating a cellular mobile telephone network, comprising;
- sending a request for service from a mobile station by means of data modulated on a common random access channel (RACH) in a format associated with first a cell in which the mobile station is located, and at base stations in cells neighbouring the first cell, demodulating the RACH message burst having the format associated with the first cell, and passing the demodulated data to a radio network controller (RNC);
- and including instructing a base station in the first cell to assign first hardware to search for RACH data having physical channel attributes belonging to mobile stations located in a handover region, and to assign second hardware to search for RACH data having the physical channel attributes belonging to mobile stations located in a non-handover region.
Dependencies are inferred from the claim text.