Traffic Modeling for NASA's Space Communications and Navigation (SCaN) Network

IP-based communications technologies are being implemented for space applications, including NASA's constellation program and its efforts toward returning humans to the Moon. In order to be able to accurately estimate performance, models have been developed that characterize the types of offered traffic that will occur. Voice and real-time motion imagery (video) models have been specifically developed due to their importance, in addition to general models for telemetry and command data flow. Synthesized traffic may be generated from these models and aggregated to build representative loads on the communications transport resources for performance characterization.

[1]  Athina Markopoulou,et al.  Assessment of VoIP quality over Internet backbones , 2002, Proceedings.Twenty-First Annual Joint Conference of the IEEE Computer and Communications Societies.

[2]  Oliver Rose,et al.  Statistical properties of MPEG video traffic and their impact on traffic modeling in ATM systems , 1995, Proceedings of 20th Conference on Local Computer Networks.

[3]  G. E. Bryan Not all programmers are created equal , 1994, Proceedings of 1994 IEEE Aerospace Applications Conference Proceedings.

[4]  Constantine Kotropoulos,et al.  Voice Activity Detection Using Generalized Gamma Distribution , 2006, SETN.

[5]  Esther Jennings,et al.  Architecture modeling and performance characterization of Space Communications and Navigation (SCaN) network using MACHETE , 2008 .

[6]  Joseph D. Langford,et al.  Models for analysis of packet voice communications systems , 1986, IEEE J. Sel. Areas Commun..

[7]  Samy A. Mahmoud,et al.  Modeling the on-off patterns in conversational speech, including short silence gaps and the effects of interaction between speaking parties , 1994, Proceedings of IEEE Vehicular Technology Conference (VTC).