Abstract:

Spatial network, regarded as an extension of terrestrial network, is an important component of the integrated network. In the scenario that the spatial network is a mobile constellation, the traditional integrated network model takes the spatial network as an independent autonomous system, utilizing the border gateway protocol (BGP) to connect it with the terrestrial network and to maximize their compatibility between. However, the traditional integrated network model faces the problem of frequent session interruption and a large number of routing updates existing between border gateways. By re-examining the role of space network and border demarcation, we propose an integrated network oriented architecture，called space links for the integrated network (Slink). The core idea of the Slink is to utilize the spatial network to provide an interconnection channel for terrestrial networks and the routing updates between spatial networks and terrestrial networks are isolated by border gateways. Simulation results show that the Slink architecture can effectively reduce the need for storage space of the space routers and the bandwidth consumption between spatial networks and terrestrial networks.

Key words: integrated network, spatial network, hierarchy architecture, flow, routing table