Broadcast Radio Access Network (BRAN) is a project launched in 1997 by the European Telecommunications Standards Institute(ETSI) for a broadband wireless accessarea. The aim of the project is to develop new standards for broadband wireless access areas operating at transmission rates of 25 Mbit\/s and higher in the microwave range between 3 GHz and 60 GHz. The BRAN concept relies on license-required and license-free frequency ranges. \nThe "ETSI Project BRAN" is the successor of the Sub-Technical Committee RES10, which developed the specifications for Hiperlan. The ETSI BRAN specifications refer to the physical layer and the link layer to ensure interworking of the broadband radio-based system with existing wireline systems based on ATM or TCP\/IP protocols. Objectives of the BRAN projectInorder to ensure the widest possible coherence with existing or new technologies, ETSI BRAN has been working with a wide range of standardization bodies, including ATM, IEEE 802.11, IETF, ITU-R.