无线移动互联网：原理、技术与应用崔勇CH3AdHoc_1课件教学.pptVIP

The detail information of “hidden terminal” is in CH2. * Multiple Access with Collision Avoidance * Floor Acquisition Multiple Access Protocols The picture is FAMA-NCS * Busy Tone Multiple Access Protocols * Dual Busy Tone Multiple Access Protocol The picture is the example of D * Receiver-Initiated Busy Tone Multiple Access Protocol * Distributed packet reservation multiple access protocol packet reservation multiple access (PRMA) * * 26 * 25 * 25 Collision avoidance time allocation protocol * Hop reservation multiple access protocol * Soft reservation multiple access with priority assignment The picture is the frame of SPMA/PA * Five-Phase Reservation Protocol Soft reservation multiple access with priority assignment The picture is the frame of FPRP * MACA with Piggy-Backed Reservation The picture is the process of MACA/PR. * Real-Time Medium Access Control Protocol * * * MAC protocols that use directional antennas have several advantages: Reduce signal interference Increase in the system throughput Improved channel reuse MAC protocol using directional antennas Make use of an RTS/CTS exchange mechanism Use directional antennas for transmitting and receiving data packets Example Directional Busy Tone-based MAC Protocol (DBTMA) It uses directional antennas for transmitting the RTS, CTS, data frames, and the busy tones. MAC Protocols that use directional Antennas CSCUI Yong * CSCUI Yong * Outline Introduction Medium Access Control (MAC) Protocols Contention-based protocols Contention-based Protocols with Reservation Mechanisms Contention-based protocols with Scheduling Mechanisms MAC Protocols that use directional Antennas Other protocols Summary of MAC Protocols Other MAC Protocols Power Control MAC Protocol (PCM) Allows nodes to vary their transmission power levels on a per-packet basis Receiver-based Auto-rate Protocol (RBAR) Use a rate adaptation approach Interleaved Carrier-Sense Multiple Access Protocol (ICSMA) The availabl