Hop Reservation Multiple Access (HRMA) for Ad-Hoc Networks

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Hop Reservation Multiple Access (HRMA) for Ad-Hoc Networks
A new multichannel MAC protocol called Hop-Reservation Multiple Access (HRMA) for wireless ad-hoc networks (multi-hop packet radio networks) is introduced, specified and analyzed. HRMA is based on simple half-duplex, very-slow frequency-hopping spread spectrum (FHSS) radios and takes advantage of the time synchronization necessary for frequency hopping. HRMA allows a pair of communicating nodes to reserve a frequency hop using a reservation and handshake mechanism that guarantee collision-free data transmission in the presence of hidden terminals. We analyze the throughput achieved in HRMA for the case of a hypercube network topology assuming variable-length packets, and compare it against the multichannel slotted ALOHA protocol, which represents the current practice of MAC protocols in commercial ad-hoc networks based on spread spectrum radios, such as Metricom's Ricochet system. The numerical results show that HRMA can achieve much higher throughput than multichannel slotted ALO...
Zhenyu Tang, J. J. Garcia-Luna-Aceves
Added 03 Aug 2010
Updated 03 Aug 2010
Type Conference
Year 1999
Authors Zhenyu Tang, J. J. Garcia-Luna-Aceves
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