A Unified Routing Framework for Integrated Space/Air Information Networks

作者：Qi, Weijing; Hou, Weigang; Guo, Lei^*; Song, Qingyang; Jamalipour, Abbas

来源：IEEE Access, 2016, 4: 7084-7103.

DOI：10.1109/ACCESS.2016.2618905

• Routing
• integrated space/air information network
• hybrid time-space graph
• semi-Markov prediction model

The aerospace-based communications can be managed more efffciently 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.

• 出版日期2016
• 单位东北大学