A method of communicating using proximity services (ProSe) is disclosed. A base station receives at least one aggregate maximum bit rate (AMBR) parameter from a network entity. The at least one AMBR parameter comprises a maximum bit rate that a first wireless transmit/receive unit (WTRU) can use for data sent on one or more ProSe bearers. The base station receives a request from the first WTRU to establish the one or more ProSe bearers with a second WTRU. The request comprises priority information of the one or more ProSe bearers determined by the first WTRU. The base station sends an indication to the first WTRU to establish a ProSe communication over the one or more ProSe bearers based on at least the AMBR parameter and the priority information of the one or more ProSe bearers.