Masanori Sekido

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— Smart antennas are expected to enhance scalability in ad hoc networks. This paper at first evaluates three directional MAC protocols, DMAC, MMAC and SWAMP as well as the omni-directional protocol IEEE 802.11 DCF in multi-hop transmission environment. The evaluations address the problem that the performance strongly depends on the topology of routes(More)
Smart antennas are expected to enhance scalability in ad hoc networks. This paper at first evaluates three directional MAC protocols, DMAC, MMAC and SWAMP as well as the omni-directional protocol IEEE 802.11 DCF in multi-hop transmission environment. The evaluations address the problem that the performance strongly depends on the topology of routes between(More)
In this paper, we perform a comparative evaluation of characteristics multi-hop transmission of typical omni-directional MAC protocol IEEE 802.11 DCF and three directional MAC protocols. We consider the validity of the directional MAC protocols and problems. Additionally, we describe the suitable environment when a directional MAC protocol is used.(More)
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