Routing Different Traffic in Deep Space Networks

The unique characteristics of deep space networks lead to different research approaches from those in terrestrial networks. In this paper, two different routing mechanisms are proposed to addresses the delivery of remote control messages and scientific data in deep space networks. The location-predicted directional broadcast (LPDB) is proposed for the fast delivery of remote control messages and automatic data delivery. For controlled data delivery, the receiver-initiated on-demand routing (RIOR) is proposed. In RIOR, the route discovery is initiated on-demand by the receiver, and routing tables are maintained in soft state at intermediate nodes. The simulation results show that LPDB and RIOR address the service requirements of different types of traffic, and are efficient in both message delivery and power consumption.