基于拓扑和位置感知的卫星导航增强信息播发网络构建研究(英文)

• 作 者: 赵军
• 机 构: Department of Computer Science and Technology,Tsinghua University,
• 出 处: 中国通信
• 发表日期: 2011年03期
• 关键词: broadcast navigation augmentation multicast overlay 拓扑和 topology 卫星导航 utilize aw

It is an effective method to broadcast the augmentation information of satellite navigation system using GEO technology.However,it becomes difficult to receive GEO signal in some special situation,for example in cities or canyons,in which the signal will be sheltered by big buildings or mountains.In order to solve this problem,an Internet-based broadcast network has been proposed to utilize the infrastructure of the Internet to broadcast the augmentation information of satellite navigation system,which is based on application-layer multicast protocols.In this paper,a topology and position aware overlay network construction protocol is proposed to build the network for augmentation information of satellite navigation system.Simulation results show that the new algorithm is able to achieve better performance in terms of delay,depth and degree utilization.

It is an effective method to broadcast the augmentation information of satellite navigation system using GEO technology.However, it becomes difficult to receive GEO signal in some special situation, for example in cities or canyons, in which the signal will be sheltered by big buildings or mountains.In order to solve this problem, an Internet-based broadcast network has been proposed to utilize the infrastructure of the Internet to broadcast the augmentation information of satellite navigation system, which is based on application-layer multicast protocols.In this paper, a topology and position aware overlay network construction protocol is proposed to build the network for augmentation information of satellite navigation system. Simulation results show that the new algorithm is able to achieve better performance in terms of delay, depth and degree utilization.