Patent ID: 7133689

Claim:
In a wireless communication system, a method of controlling transmission power to adjust the step size of a target signal-to-interference ratio (SIR) to compensate for channel conditions affected by block error rate (BLER), the method comprising: in a settling state, initializing a plurality of parameters including (i) an inner loop settling time, (ii) a steady state step size, (iii) a transient state step size and (iv) a transmission timing interval (TTI) count; in the settling state, incrementing the TTI count until the product of the TTI count and the length of TTI is greater than the inner loop settling time; in a transient state, adjusting the target SIR based on the occurrence of a cycle redundancy check (CRC) and at least one step size parameter; and in a steady state, adjusting the target SIR based on a CRC and at least one step size parameter.