Energy Efficiency and Power Control

Zheng, Jun; Jamalipour, Abbas

doi:10.1002/9780470443521.ch10

Cited by 4 publications

(2 citation statements)

References 31 publications

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“…Let the hop routing denote the proportion of the number of all end-to-end routing hops in current static network routing to the one in initial state, and let hop flow denotes the proportion of the number of all routing hops with flow passed by to the one in initial state. To keep the satellite network's latency performance in system level, we confine hop flow should be smaller than η [1,2].…”

Section: Problem Formulationmentioning

confidence: 99%

“…There are some researches focusing on the satellite energy-saving problems [7] [8], however, most of them aim at the energy and resource allocation of the single satellite, not the whole satellite network or satellite constellation. Compared to the durative solar-coverage of geostationary orbit (GEO) satellite, the low earth orbit (LEO) satellite would move into the shadow behind earth almost in every orbit cycle, and then only the battery can be available, which is the same condition as the wireless sensor networks [2]. For the satellite moving problem, we use the classic snapshot routing algorithm [9] to keep the network topology changing stably.…”

Section: Introductionmentioning

confidence: 99%

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Improving Availability through Energy-Saving Optimization in LEO Satellite Networks

Tang

Zhang

et al. 2014

Information and Communication Technology

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Part 2: The 2014 Asian Conference on Availability, Reliability and Security, AsiaARES 2014International audienceRecently, satellite networks are widely used for communication in areas lack of network infrastructures, and will act as the backbones in the next generation internet. Therefore, the availability of satellite networks is very important. In space, the energy is always limited for satellites, and highly efficient energy utilization would certainly improve the availability of satellite systems. In this paper, we consider the energy-saving optimization for the LEO satellite network instead of a single satellite. We modify and extend the multicommodity flow model [3] to switch off satellite nodes and links as much as possible in LEO satellite networks. Taking advantage of the multi-coverage scheme and traffic distribution patents in satellite networks, we improve the heuristic algorithms in [3] to turn off the unnecessary satellites, up-down links and inter-satellite links respectively up to 59 %, 61 % and 72 % under the constraints of link utilization and routing hops increase ratio, and the total energy saving ratio can be up to 65 %. Finally, the availability of LEO satellite networks has been deeply developed

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Section: Problem Formulationmentioning

confidence: 99%