Load balancing multipath routing protocol for mass remote sensing data downlink in LEO satellite network |
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| Authors: | Pei-long LIU Hong-yu CHEN Song-jie WEI Hao CHENG Shuai LI Jun-yong WANG |
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| Affiliation: | 1. Shanghai Institute of Microsystem and Information Technology,Chinese Academy of Sciences,Shanghai 200050,China;2. Shanghai Engineering Center for Microsatellites,Shanghai 201203,China;3. University of Chinese Academy of Sciences,Beijing 101407,China;4. School of Computer Science and Engineering,Nanjing University of Science and Technology,Nanjing 210094,China |
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| Abstract: | LEO satellite networks can provide seamless real-time data communication for all kinds of users,which developed rapidly in recent years.At the mean time,the massive payload data down-link system of space data sources,such as remote sensing satellites,still make use of traditional storage and forward mode.The real-time performance of space mission data will be improved effectively,if such satellites are connected to LEO satellite networks equipped with inter satellite links.However,it is necessary to design a specialized satellite network load balancing routing algorithm.Satellite parallel edge-disjoint multipath routing protocol (SPEMR) was designed for remote sensing satellite real-time down-link applications.OPNET simulation results indicate that the performance degradation index(DI) of the multipath scheme implemented by SPEMR is 0.32,which is only 32% of the TLR and 21% of the traditional DSP scheme.It is demonstrated that SPEMR has the better capability of transmitting massive data in real time. |
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| Keywords: | LEO satellite network multipath remote sensing routing |
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