摘要
无线自组织网络因其十分便捷的建立方式和多样灵活的网络架构,被广泛应用于应急通信、远距离指控等场景。与传统的无线网络相比,无线自组织网络具有快速部署、无需固定基站等特点。在网络的初始化过程中,采用定向天线技术不但能够扩大波束搜索范围,还能在一定程度上确保信息传输的安全性。立足于定向无线自组织网络的初始化过程,对天线对准、邻居发现、资源分配、时间同步和媒体访问控制层技术的研究现状进行了归纳总结。其中,天线对准作为邻居发现要解决的首要难题,是支撑定向无线自组织网络组网程序的物理前提,邻居发现和资源分配是接入层协议的重要内容,二者对于时隙、频率等通信资源的占用比例决定着无线自组织网络的初始化效率,时间同步对于时分多址接入、拓扑建立、路由更新等的性能有着重要影响。通过对这些技术的梳理和讨论向读者具体地展示了各分支技术在提升网络初始化效率中的重要作用,希望能够对后续定向无线自组织网络的深入研究有所启发。
Wireless Ad Hoc network is widely used in scenarios such as emergency communication and long-distance command due to its very convenient establishment property,and diverse and flexible network architecture.Different from traditional wireless networks,wireless Ad Hoc network has the property of being fast to deploy and requiring no fixed base stations.In the process of network initialization,the use of directional antennas can not only expand the beam search range,but also ensure the security of information transmission.Based on the initialization process of directional wireless Ad Hoc network,this study summarizes the research status of antenna alignment,neighbor discovery,resource allocation,time synchronization,Medium Access Control layer protocol.Antenna alignment,as the primary problem to be solved in neighbor discovery,is the cornerstone of the entire directional wireless Ad Hoc network,the neighbor discovery problem and resource allocation problem are the key objects to be solved by the access layer protocol,the proportion of time slot and frequency resources occupied by the two determines the self-organizing efficiency of wireless Ad Hoc network,and time synchronization is important for time division multiple access,topology establishment and routing update.Through the discussion of the coordination mechanism of these technologies,readers can understand the importance of each branch technology to improve the efficiency of network initialization.The study is hoped to inspire the in-depth research on the subsequent directional wireless Ad Hoc network.
作者
王镜普
宗康
张周
WANG Jingpu;ZONG Kang;ZHANG Zhou(National Innovation Institute of Defense Technology,Academy of Military Sciences,Beijing 100071,China)
出处
《智能安全》
2024年第4期104-112,共9页
Artificial Intelligence Security
关键词
无线自组织网络
邻居发现
天线对准
资源分配
同步
wireless Ad Hoc network
neighbor discovery
antenna alignment
resource allocation
synchronous
作者简介
第一作者:王镜普(1990-),男,辽宁沈阳人,博士,助理研究员,E-mail:gfmtjl@126.com。
