The present invention relates to methods and arrangements for facilitating the allocation of radio resources in a communication network, comprising a communication network node communicating with a user equipment by means of data stream transmissions over a radio interface on radio channels. What power allocation said communication network node will use for next to said user equipment incoming data transmission is predicted. Based on the power allocation prediction information on if a single data stream transmission or if a multi data stream transmission is selected for said communication is transmitted from the user equipment to the communication network node in a channel quality message. Whereby said communication network node is arranged to allocate available radio resources based on said channel quality message.