UPLINK SCRAMBLING DURING RANDOM ACCESS Russian patent published in 2013 - IPC H04W74/08 

FIELD: radio engineering, communication.

SUBSTANCE: technology described in this case facilitates random access by a user terminal to a radio base station. A user terminal determines one of a first type of uplink scrambling sequences and generates a random access message using the determined one of the first type of uplink scrambling sequences. The random access message is transmitted to the base station. The user terminal receives from the base station a second, different type of uplink scrambling sequence and uses it for subsequent communication with the radio base station. For example, the first uplink scrambling sequences may be associated with a specific area of the radio base station's cell or a specific random access radio channel associated with the radio base station, but they are not specifically assigned to any user terminal, and the second uplink scrambling sequence may be selected from a second set of uplink scrambling sequences assigned to specific individual user terminals.

EFFECT: reduced noise.

16 cl, 10 dwg