On-demand access for next generation NASA missions

Author

Lin, Lin ; Hadjitheodosiou, Michael

Author_Institution

Center for Satellite & Hybrid Commun. Networks, Maryland Univ., College Park, MD, USA

Volume

5

fYear

2002

fDate

2002

Firstpage

2999

Abstract

We discuss medium access control (MAC) issues related to the migration to the next generation on-demand mode for communication support of NASA missions in near Earth orbits. For this scenario, to meet the objective of bandwidth-efficient support while guaranteeing specific QoS requirements, a detailed investigation of the suitability of the MAC schemes is performed. Performance measures of interest include end-to-end delay and successful throughput. A reservation-based demand time division multiple access (RD-TDMA) protocol is proposed and its performance is analyzed. Using simulation, we compare the system´s performance under this scheme with that obtained under a fixed-assignment scheme. Simulation results demonstrate that on-demand mode is a suitable strategy for future NASA space missions with an unpredictable traffic pattern, and can offer certain performance advantages.

Keywords

quality of service; satellite communication; telecommunication traffic; time division multiple access; MAC; QoS requirements; end-to-end delay; medium access control; near Earth orbits; next generation NASA missions; reservation-based demand TDMA protocol; reservation-based demand time division multiple access protocol; throughput; unpredictable traffic pattern; Access protocols; Delay; Earth; Extraterrestrial measurements; Media Access Protocol; NASA; Orbits; Performance analysis; Throughput; Time division multiple access;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2002. ICC 2002. IEEE International Conference on

Print_ISBN

0-7803-7400-2

Type

conf

DOI

10.1109/ICC.2002.997390

Filename

997390