有向Ad hoc网络中一种基于DNAV包调度的多址接入协议*

移动Ad Hoc网络中应用方向性天线，在增加网络吞吐量的同时会产生队列头阻塞问题（Head of Line Blocking，HOL）问题。文章提出一种基于有向网络分配矢量包调度的多址接入协议（Directional Network Allocation Vector-based Packets Scheduling for MAC Protocol,DAPS），使用有向网络分配矢量（Directional Network Allocation Vector ,DNAV）作为包调度的策略，将节点周边区域进行划分，在可用区域内选择理想目的数据包进行发送。利用OPNET仿真软件对其进行了网络仿真，并在结果分析中验证了DAPS协议更适合网络拓扑结构的变化，且有效地解决了HOL问题和进一步提高了网络吞吐量。

Novel directional-NAV-based packets scheduling for MAC protocol in directional antenna of Ad hoc networks

For directional antennas application in Mobile Ad Hoc Networks, a novel Directional Network Allocation Vector-based Packets Scheduling (DAPS) algorithm is proposed. The algorithm divides the surrounding region of the node using the DNAV parameters, and eliminates the region that is not available, lastly chooses the ideal destination node to send the packet. Simulations results on OPNET environment explicitly show the DAPS scheme can enable higher throughput while effectively solving the HOL blocking problem.