@conference {
	title = {Alternative Network Architectures for Supporting Communications From the International Space Station},
	author = {Nguyen, Alex T., Hadjitheodosiou, Michael., Baras, John S.},
	year = {2002},
	month = {05/2002},
	abstract = {In order to support the communications needs of the International Space Station (ISS), alternative communications architectures to provide broadband support need to be considered. We address three communications options and evaluate an architecture for the direct to ground option, which could serve as an intermediary solution to satisfy near term communications needs of commercial experiments and payloads on the ISS and overcome certain limitations of the current ISS communications infrastructure. We focus on a particular user{\textquoteright}s requirements, and examine the system{\textquoteright}s communications links, and coverage availability. These parameters, along with high-level cost estimates, are compared to using commercial relay satellites, and an enhanced TDRSS. The direct to ground option is viable for store-and-forward applications and cost comparable to commercial constellations, but TDRSS is the choice for realtime or continuous data applications.},
	address = {Quebec, Canada},
	booktitle = {20th AIAA International Communication Satellite systems Conference and Exhibit},
	pages = {pp. 1-10},
	organization = {Montreal}
}
@techreport {
	title = {A direct-to-ground architecture for supporting Commercial Communications from the International Space Station},
	author = {Nguyen, Alex T., Zhou, Xiangrong., Hadjitheodosiou, Michael.},
	year = {2002},
	month = {01/2002},
	abstract = {We outline the first steps of an effort to start defining a communications architecture for supporting broadband data communications from the International Space Station. We address three communications options and focus on a direct-to-ground architecture, which could serve as an intermediary solution to satisfy near-term communications needs of commercial experiments and payloads on the ISS and overcome certain limitations of the current ISS communications infrastructure. A high-level analysis of the architecture for the direct to ground option is performed, focusing on a particular user{\textquoteright}s requirements, communications links, and coverage availability. We also discuss system, mobility support and protocol issues that need to be addressed for this solution to be a feasible alternative.},
	address = {New York, NY}
}
@conference {
	title = {A direct-to-ground architecture for supporting commercial communications from the International Space Station},
	author = {Nguyen, Alex T., Zhou, Xiangrong., Hadjitheodosiou, Michael., Baras, John S.},
	year = {2002},
	month = {04/2002},
	abstract = {We outline the first steps of an effort to start defining a communications architecture for supporting broadband data communications from the International Space Station. We focus on a direct-to-ground architecture, which could serve as an intermediate solution to satisfy the near term communications needs of commercial experiments and payloads on the ISS and overcome certain limitations of the current ISS communications infrastructure. We address three communications options and evaluate an architecture for the direct-to-ground option, focusing on a particular user{\textquoteright}s requirements, communications links, and coverage availability. We also discuss system, mobility support and protocol issues that need to be addressed for this solution to be a feasible alternative.},
	address = {New York, NY},
	booktitle = {IEEE International Conference on Communications},
	pages = {pp. 2989-2993}
}
