Patent ID: 7061890
Filing Date: 2006-06-13
Classification: H04W

Abstract:
1. A method for selecting a random access channel (RACH) scrambling code from a plurality of scrambling codes by a (user equipment) UE in a CDMA (Code Division Multiple Access) mobile communication system including a UTRAN (UMTS (Universal Mobile Telecommunication System) Terrestrial Radio Access Network), comprising the steps of: transmitting information for a plurality of scrambling codes having serial numbers associated with random access channels(RACHs) from the UTRAN to the UEs; and selecting a scrambling code from a plurality of scrambling codes by a UE (User Equipment), wherein each UE selects the scrambling code from the plurality of scrambling codes using a unique identifier specified by each of the plurality of UEs, wherein the scrambling code selected by the UE has a serial number defined as a remainder obtained by dividing the specified unique identifier by a quotient obtained by dividing a total number of the plurality of scrambling codes by a persistence level transmitted from the UTRAN.