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Wireless protocols A MAC protocol for a wireless LAN provides two types of data-transfer Service Access Points (SAP): network and native. The network SAP offers an access to a legacy network protocol (., IP). The native SAP provides an extended service interface that may be used by custom network protocols or user applications capable of fully exploiting the protocol specific Quality of Service (QoS) parameters within the cell service area. Broadband Radio Access Integrated Network (BRAIN) is used for millimeter wave band multimedia communications | Mobile Telecommunications Protocols For Data Networks. Anna Hac Copyright 2003 John Wiley Sons Ltd. ISBN 0-470-85056-6 4 Wireless protocols A MAC protocol for a wireless LAN provides two types of data-transfer Service Access Points SAP network and native. The network SAP offers an access to a legacy network protocol . IP . The native SAP provides an extended service interface that may be used by custom network protocols or user applications capable of fully exploiting the protocol specific Quality of Service QoS parameters within the cell service area. Broadband Radio Access Integrated Network BRAIN is used for millimeter wave band multimedia communications. In BRAIN all Access Points APs need to have only an optical electrical OE converter because BRAIN incorporates radio on fiber technologies which allow for transmitting radio signals through optical fiber cables. The Hybrid and Adaptive MAC HAMAC protocol integrates fixed assignment Time Division Multiple Access TDMA protocols reservation-based protocols and contentionbased protocols into a wireless network simultaneously and efficiently supporting various classes of traffic such as Constant Bit Rate CBR Variable Bit Rate VBR and Available Bit Rate ABR traffic. The HAMAC protocol uses a preservation slot technique to minimize the packet contention overhead in Packet Reservation Multiple Access PRMA protocols while retaining most isochronous service features of TDMA protocols to serve voice and CBR traffic streams. Adaptive Request Channel Multiple Access ARCMA is a Demand Assignment Multiple Access DAMA protocol with dynamic bandwidth allocation. This scheme is designed to function in a cell-based wireless network with many Mobile Stations MSs communicating with the Base Station BS of their particular cell. Transmissions are done on a slot-by-slot basis without any frames. Each slot is divided into a Transmission Access TA slot and a Request Access RA minislot. The RA channel in ARCMA is capable of carrying .