A method in a radio base station comprising an interference suppression, IS, receiver for scheduling an uplink radio resource to a first user equipment in a wireless communication system which employs Code Division Multiple Access, CDMA, the method comprising: - measuring an IS gain for each user equipment in a set of user equipments currently transmitting in uplink to the radio base station, wherein measuring the IS gain for the set of user equipments comprises measuring an air interface load as seen after IS processing and an air interface load before IS processing, said air interface load is measured as Signal to Interference and Noise ratio, SINR, and transforming said SINR after IS processing and said SINR before IS processing to load factors, and determining a load factor difference between the air interface load before and after IS processing, and wherein said load factor difference is determined according to: - Δ L IS = L(t) - L IS ( t) where - L t = ∑ i = 1 I SIN R i t γ i t G RxLoss W i + 1 − α SIN R i t γ i t - L IS t = ∑ i = 1 I SIN R i IS t γ i t G RxLoss W i + 1 − α SIN R i IS t γ i t, wherein G is the diversity gain, RxLoss is missed receiver energy, α is a self-interference factor, W i is the spreading factor, γ i (t) is the effective power offset, I is the number of UE, and - determining a user constellation pertaining to information regarding the set of user equipments currently transmitting in uplink to the radio base station and the respective bitrates of said set of user equipments, - updating a table of IS gains with the measured IS gain, expressed as the determined load factor difference in the load factor domain, corresponding to the determined user constellation, - predicting a load based on said updated table, and - scheduling the uplink radio resource to the first user equipment at least partly based on said predicted load. - measuring an IS gain for each user equipment in a set of user equipments currently transmitting in uplink to the radio base station, wherein measuring the IS gain for the set of user equipments comprises measuring an air interface load as seen after IS processing and an air interface load before IS processing, said air interface load is measured as Signal to Interference and Noise ratio, SINR, and transforming said SINR after IS processing and said SINR before IS processing to load factors, and determining a load factor difference between the air interface load before and after IS processing, and wherein said load factor difference is determined according to: - Δ L IS = L(t) - L IS ( t) where - L t = ∑ i = 1 I SIN R i t γ i t G RxLoss W i + 1 − α SIN R i t γ i t - L IS t = ∑ i = 1 I SIN R i IS t γ i t G RxLoss W i + 1 − α SIN R i IS t γ i t, wherein G is the diversity gain, RxLoss is missed receiver energy, α is a self-interference factor, W i is the spreading factor, γ i (t) is the effective power offset, I is the number of UE, and - determining a user constellation pertaining to information regarding the set of user equipments currently transmitting in uplink to the radio base station and the respective bitrates of said set of user equipments, - Δ L IS = L(t) - L IS ( t) where - L t = ∑ i = 1 I SIN R i t γ i t G RxLoss W i + 1 − α SIN R i t γ i t - L IS t = ∑ i = 1 I SIN R i IS t γ i t G RxLoss W i + 1 − α SIN R i IS t γ i t, wherein G is the diversity gain, RxLoss is missed receiver energy, α is a self-interference factor, W i is the spreading factor, γ i (t) is the effective power offset, I is the number of UE, and - determining a user constellation pertaining to information regarding the set of user equipments currently transmitting in uplink to the radio base station and the respective bitrates of said set of user equipments, - updating a table of IS gains with the measured IS gain, expressed as the determined load factor difference in the load factor domain, corresponding to the determined user constellation, - predicting a load based on said updated table, and - scheduling the uplink radio resource to the first user equipment at least partly based on said predicted load.