Optimal energy allocation and admission control for communications satellites

Fu, A.; Modiano, Eytan; Tsitsiklis, John N.

doi:10.1109/tnet.2003.813041

Cited by 81 publications

(17 citation statements)

References 8 publications

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“…As seen in the discussion subsequent to the statement of Theorem 1, an optimal policy for this situation simply consists of picking the best time slots. The resulting consumption at time k is then given by (7).…”

Section: Discussionmentioning

confidence: 99%

Optimal energy allocation for delay-constrained data transmission over a time-varying channel

Modiano

Tsitsiklis

2003

IEEE INFOCOM 2003. Twenty-Second Annual Joint Conference of the IEEE Computer and Communications Societies (IEEE Cat. No.03CH37

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Abstract-We seek to maximize the data throughput of an energy and time constrained transmitter sending data over a fading channel. The transmitter has a fixed amount of energy and a limited amount of time to send data. Given that the channel fade state determines the throughput obtained per unit of energy expended, the goal is to obtain a policy for scheduling transmissions that maximizes the expected data throughput. We develop a dynamic programming formulation that leads to an optimal closed-form transmission schedule. We then extend our approach to the problem of minimizing the energy required to send a fixed amount of data over a fading channel given deadline constraints.

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Section: Discussionmentioning

confidence: 99%

Optimal energy allocation for delay-constrained data transmission over a time-varying channel

Modiano

Tsitsiklis

2003

IEEE INFOCOM 2003. Twenty-Second Annual Joint Conference of the IEEE Computer and Communications Societies (IEEE Cat. No.03CH37

Self Cite

118

101

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“…Applying these bounds and relationship to the execution of tasks with fixed versions, we find a fixed value X of SoC such that X ≤ X holds where X and X are SoC values at the beginning and end of a satellite's orbit period. 2 We prove that power sufficiency is guaranteed as long as there exists such a fixed value of SoC. Then, we calculate fixed points for different configurations of solar panels and battery cells, and choose the best configuration, thus addressing G1.…”

Section: Introductionmentioning

confidence: 94%

“…Due to their significant impact on human lives, business and scientific exploration, satellites have been widely studied, mainly focusing on their physical and communication aspects, respectively from the aerospace and networking communities [1][2][3]. Unlike other systems operating on the earth, all subsystems of a satellite should be accommodated within a limited budget of space and weight, resilient to severe radiation and a wide range of temperature, and ultra-reliable since it is impossible or very costly to replace (failed) physical parts after its launch.…”

Section: Introductionmentioning

confidence: 99%

Design and Management of Satellite Power Systems

Lee

Kim

Shin

2013

2013 IEEE 34th Real-Time Systems Symposium

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Abstract-Satellites are indispensable for broadcast, weather forecast, navigation, and many other applications, but their design entails a number of stringent requirements, such as limited space and weight, impossible/costly online repairs, severe radiation, and a wide range of temperature they have to withstand. These requirements can only be met by an effective, robust co-design of physical and computing (control) parts of each satellite, making them prototypical cyber-physical systems (CPSes). Of the various CPS issues related to satellites, this paper focuses on offline design and online management of satellite power systems. Specifically, we analyze and model unique characteristics of power supply and demand of a satellite, which are dictated by the periodicity of power generation from solar panels and the nonlinear behavior of rechargeable battery cells. Based on the understanding of these characteristics, we first propose how to find the best configuration (e.g., the number, the arrangement, and the type) of solar panels and battery cells at design time, such that all tasks can be executed without power shortage throughout the satellite's mission lifetime. Second, we propose how to manage power online so as to execute the highest QoS versions of tasks (thus yielding the most power-effective performance) without compromising the power-sufficiency guarantee under a given configuration. As a case study, we study cubic-shaped nanosatellites, which have been launched multiple times since 2004. We borrow their architecture, configuration and parameters, and demonstrate the effectiveness of our design and management of satellite power systems.

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“…Scheduling problems have been studied extensively for single or multiuser channels from the point of view of energy efficiency (see [3][4] [5] [6] [7]). Typically in these works, the problem is that of determining a schedule which minimizes the total energy consumed over the transmission while respecting the deadline constraints.…”

Section: Problem Statement and Related Workmentioning

confidence: 99%