MOBILE COMMUNICATION SYSTEM, CONTROL DEVICE, BASE STATION DEVICE, USER TERMINAL, SYSTEM CONTROL METHOD AND DEVICE CONTROL METHOD

摘要

PROBLEM TO BE SOLVED: To provide techniques for preventing a discrepancy in configuration between devices as to whether the data size for data communication in a mobile communication system is of fixed length or variable length.SOLUTION: A base station device receives a RADIO LINK ADDITION REQUEST message including RLC PDU size format information from a control device, and if the RADIO LINK ADDITION REQUEST message includes RLC PDU size format information indicating an RLC PDU size is of variable length and HS-DSCH MAC-d PDU size format information included in the RADIO LINK ADDITION REQUEST message indicates that a MAC-d PDU size is of fixed length, the base station device rejects a procedure of radio link addition using a RADIO LINK ADDITION FAILURE message.