Method and Apparatus for Uplink Timing Synchronization with Ranging Signal in Mobile Communication System

A method for a subscriber station of a mobile communication system to synchronize a base station and an uplink time, the method comprising:

• transmitting an initial ranging request signal for initial ranging to the base station;
• receiving initial ranging information including delay time information for delay transmission of uplink data from the base station;
• performing initial ranging by using transmission parameter values included in the initial ranging information;
• and
• transmitting uplink data by using a delay time established through the initial ranging.

A device for synchronizing a subscriber station and an uplink time by using a delay time in a base station of a mobile communication system, the device comprising:

• means for receiving an initial ranging request signal for initial ranging from the subscriber station;
• means for generating initial ranging information including delay time information established for delay transmission of uplink data in response to the initial ranging request signal;
• means for transmitting the generated initial ranging information to the subscriber station;
• and
• means for receiving the uplink data delayed and transmitted by using the delay time from the subscriber station.

A subscriber station for synchronizing a base station of a mobile communication system and an uplink time, the subscriber station comprising:

• means for transmitting an initial ranging request signal for initial ranging to the base station;
• means for receiving initial ranging information including delay time information established for delay transmission of uplink data from the base station;
• means for performing initial ranging by using a transmission parameter value included in the initial ranging information;
• and
• means for transmitting the uplink data by using a delay time established through the initial ranging.