| 摘要 |
In the concealment process executed between a mobile unit and a wireless control apparatus in a mobile communication system, the mobile unit and wireless control apparatus store the same fixed data beforehand. A transmitting end conceals and transmits the fixed data before transmitting user data. A receiving end receives and decodes the concealed fixed data and then compares it with the fixed data stored beforehand in the receiving end, thereby determining whether the result of the decoding of the concealed fixed data is normal. If the concealed fixed data as received and decoded before the reception of the user data does not meet the fixed data stored beforehand, then the receiving end determines that the decoding of the concealed fixed data has been failed, and then brakes its connection to the transmitting end. |
