A Unified Routing Framework for Integrated Space/Air Information Networks
A Unified Routing Framework for Integrated Space/Air Information Networks
复制标题
综合空空信息网络的统一路由框架
DOI：
10.1109/access.2016.2618905
复制
发表时间：
2016-01-01
期刊：
影响因子：
3.9
通讯作者：
Jamalipour, Abbas
中科院分区：
文献类型：
--
作者：
Qi, Weijing;Hou, Weigang;Jamalipour, Abbas
通过卫星（天）网和无人机（空）网融合，构建空天一体化信息网络，实现空天通信的高效管理。这种集成网络最适合延迟和中断容忍网络的出现，其中数据传输可以在存储结转机制下容忍长时间的延迟和中断。然而，由于网络节点的高移动性和时变拓扑可能导致高误码率和长延迟，因此这种网络具有一些具有挑战性的研究需求。在本文中，我们为该集成网络提出了一个统一的路由框架，其中实现了支持分层路由（HGHR）算法的混合时空图。更具体地说，HGHR 在混合时空图上执行，包括两个子图：空间网络的确定性图和空中网络的半确定性图。后一个图基于离散时间同质半马尔可夫预测模型。然后将混合时空图转化为状态空间图，在此基础上采用存储-进位-转发机制下的消息转发规则。仿真结果表明，所提出的HGHR算法在消息传递率、端到端延迟和功耗方面具有良好的性能。
The aerospace-based communications can be managed more efficiently through the construction of an integrated space/air information network by the convergence of satellite (space) and unmanned aerial vehicle (air) networks. Such an integrated network would best fit the advent of delay- and disruption-tolerant networking, in which the data transmission can tolerate long delay and disruption under a store-carry-forward mechanism. Such a network, however, has some challenging research needs due to the network's high mobility of nodes and time-varying topology that may result in high error bit rate and long delay. In this paper, we propose a unified routing framework for this integrated network, where a Hybrid time-space Graph supporting Hierarchical Routing (HGHR) algorithm is achieved. More specifically, the HGHR performs on a hybrid time-space graph, including two subgraphs: a deterministic graph for the space network and a semi-deterministic one for the air network. This latter graph is based on a discrete time homogeneous semi-Markov prediction model. The hybrid time-space graph is then transformed into a state-space graph, based on which, a message forwarding rule under the store-carry-forward mechanism is adopted. Simulation results show that the proposed HGHR algorithm has good performance in terms of message delivery ratio, end-to-end delay, and power consumption.