FIELD: radio engineering, communication.
SUBSTANCE: mobile terminal receives broadcast system information directly indicating the first access request preambles for the first contention based channel and indirectly indicating the second access request preambles for the second contention based channel based on the directly indicated first access request preambles. The mobile terminal further derives the second access request preambles from the first access request preambles. Additionally, the mobile terminal requests access using the second access request preambles or the first access request preambles to access the wireless communication system.
EFFECT: high transmission channel capacity.
21 cl, 6 dwg, 19 tbl
