Anypath routing is proposed to improve the performance

of wireless networks by exploiting the spatial diversity and

broadcast nature of the wireless medium. In this paper, we study

anypath routing in wireless networks with directional antennas,

and propose DART (Directional Anypath RouTing), a crosslayer

design of MAC and routing layers. For the routing layer,

we propose two shortest directional anypath routing algorithms

based on two antenna models. Our routing algorithms are

simple and fast, thus are suitable for implementation in practical

protocols. For the MAC layer, we present a directional anycast

MAC, which is an enhancement to the IEEE 802.11 MAC, making

DART suitable for integration into current systems. Simulation

results show that DART can significantly reduce the packet

transmission delay.