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- W2322739910 abstract "There is considerable interest in developing small satellites for quick-turnaround missions to investigate near-earth phenomena from space. In this paper we investigate medium access control (MAC) issues related to the migration from the current pre-planned Mult iple Access operation mode to the next generation on-demand mode focusing on NASA missions in near earth orbits. For this new scenario, in order to meet the objective of bandwidth -efficient communications support while guaranteeing specific QoS requirements, a detailed investigation of the suitability of MAC schemes is performed. Performance measures of interest include end-to-end delay and successful throughput. A reservation-based Demand TDMA protocol is proposed for this dynamic scenario. Using simulation, we compare the system’s performance under a reservation-based demand-assigned multiple-access channel allocation scheme with that obtained under a static fixed-assigned scheme. Simulation results demonstrate that on-demand mode would be a suitable strategy for next -generation NASA space mission and can offer more efficient performance in a situation where spacecraft have unpredictable bursty traffic transmission patterns." @default.
- W2322739910 created "2016-06-24" @default.
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- W2322739910 date "2002-05-12" @default.
- W2322739910 modified "2023-09-25" @default.
- W2322739910 title "Dynamic Channel Access for the Next Generation NASA Mission Network" @default.
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- W2322739910 doi "https://doi.org/10.2514/6.2002-1963" @default.
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