Patent ID: 8165047

Claim:
A method for Forward link Outer Loop Rate Control (FOLRC) in a Base Station (BS), the method comprising: receiving information, which indicates success or failure in receiving a packet transmitted in a previous frame, from Mobile Stations (MSs); and decreasing an offset value for changing a Carrier to Interference and Noise Ratio (CINR) value in a link table of each MS when an Acknowledgement message (Ack) is received as the information indicating success or failure in receiving the packet, and increasing the offset value when a signal received as the information indicating success or failure in receiving the packet is a signal other than the Ack, wherein the link table includes CINR values with respect to all Modulation and Coding Scheme (MCS) levels, wherein the offset value is at least one of a global offset value for changing all CINR values assigned to the respective MCS levels in the link table and a local offset value for changing a CINR value assigned to an MCS level of a burst allocated to the previous frame in the link table, and wherein the global offset value, denoted by Offset Global, and the local offset value, denoted by Offset Local(MCS), are decreased by Offset_Global = min ⁡ ( Offset_Global - Δ good , n , Global , ⁢ P min , Global ) Offset_Local ⁢ ( MCS ) = min ⁡ ( Offset_Local ⁢ ( MCS ) - Δ good , n , Local , ⁢ P min , Local ) , where P min,Global denotes a minimum global denotes a minimum local offset value Δ good,n,Global is (1−α)·Δ good,n , Δ good,n,Local is a (α)·Δ good,n , Δ good,n denotes a decrement of the global offset value and the local offset value, and a denotes a weight of the local offset value.