Method and apparatus for communication using a shared uplink wireless communication channel

A method of transmitting data by a user equipment using a shared uplink wireless communication channel is described. The method includes receiving a power grant corresponding to the allowed transmission power on the shared uplink wireless communication channel. Also, the user equipment receives a scheduling grant corresponding to whether transmission is allowed on the shared uplink wireless communication channel. The user equipment transmits data on the shared uplink wireless communication channel according to the power grant and the scheduling grant, wherein the power grant is received separately from the scheduling grant. A corresponding method of controlling transmission, apparatus and computer program product is also described.