There is provided a method and apparatus for allocating transmission resources in a wireless network in which some of the terminals communicate with the base station by exchanging communication frames that are compatible with a first communication protocol while other terminals receive communications from the base station that are compatible with a second communication protocol by using non-standardized communication frames or communication frames that are compatible with another standardized protocol. The base station transmits a plurality of frames, some of which are compatible with the first communication protocol while others—with the second communication protocol. The terminals that are operative to receive frames of the second communication protocol are capable of decoding frames that are compatible with both communication protocols, whereas terminals that are operative to receive frames of the first communication protocol are capable of decoding only standardized communication frames of the first communication protocol.