Wireless ad hoc network is a wireless communication network without the need of preset infrastructure.It consists of a group of mobile terminals equipped with wireless transceiver devices,forming a decentralized,multi-hop,and self-organizing net-work.The neighbor discovery issue in the Medium Access Control(MAC)protocol of ad hoc networks is crucial to network perform-ance.To meet the needs of narrow-beam and high-dynamic scenarios in airborne wireless ad hoc networks,a directional neighbor dis-covery algorithm based on wide-narrow beamforming transformation(FDBC-ND)is proposed.This algorithm ensures the alignment speed of antennas and the synchronization accuracy of time based on the characteristics of narrow-beam and high-dynamic millimeter-wave communication while satisfying the communication requirements of airborne networking.The neighbor discovery algorithm is verified through simulation experiments.Simulation results show that when the beam width of the antenna is 12° and the number of network nodes is 20,the average neighbor discovery time of the FDBC-ND algorithm is approximately 11.85 s.It can be effectively applied in airborne directional narrow-beam and high dynamic scenarios.
关键词
无线自组网/窄波束/网络同步/毫米波/邻居发现
Key words
wireless ad hoc network/narrow-beam/network synchronization/millimeter-wave/neighbor discovery
维普
万方数据