Method and apparatus in a reservation function associated with a base station serving a cell in a cellular network, for enabling access for privileged sessions in the cell. When detecting that resources being pre-reserved for privileged sessions, are used for establishing a connection for a privileged session for a wireless terminal, the reservation function pre-reserves new resources exclusively for privileged sessions to compensate for the resources occupied by the established privileged session connection in a dynamic manner. Thereby, an amount of resources sufficient for enabling at least one subsequent privileged session connection remains pre-reserved in the base station.