Method for selecting RACH in a CDMA mobile communication system

Details Method for selecting RACH in a CDMA mobile communication system Method for selecting RACH in a CDMA mobile communication system

2006-06-13

2006-06-13

Ngo, Ricky Q. (Department: 2663)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C375S140000

Reexamination Certificate

active

07061890

ABSTRACT:
A method selecting a RACH comprises determining an access service class (ASC) associated with a unique access class of a user equipment (UE) by analyzing a radio resource control (RRC) message received from a UTRAN (UMTS (Universal Mobile Telecommunication System) Terrestrial Radio Access Network); receiving mapping information from the UTRAN; analyzing ASCs and scrambling codes to be used for available RACHs associated with each of the ASCs based on the received mapping information; mapping the analyzed scrambling codes to scrambling code groups associated with the ASCs; selecting a scrambling code group associated with the determined ASC; and selecting one of the scrambling codes using a total number of the scrambling codes mapped to the selected scrambling code group and a unique identifier of the UE.

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Supplementary European Search Report dated Oct. 30, 2002 issued in a couperpart application, namely, EP Appln. No. 01937007.

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