Abstract

The intrinsic problem of hidden/exposed terminals in inter-vehicular networks may bring about communication conflicts and decrease network throughput. In this paper, we take the unidirectional feature of road into consideration, and design a single-channel transmission scheme for decreasing communication conflicts with nodes' position information and directional antennas. The scheme includes the identification and notification of relative positions among adjacent nodes, the identification of nodes' transmission state, and the scheduling of directional transmissions. By simulation experiments in NS-2, we verify that this scheme can discern hidden/exposed terminal nodes, decrease communication conflicts, and improve network performance.

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