Pei-long LIU, Hong-yu CHEN, Song-jie WEI, et al. Load balancing multipath routing protocol for mass remote sensing data downlink in LEO satellite network[J]. Journal on Communications, 2017, 38(Z1): 135-142.
DOI:
Pei-long LIU, Hong-yu CHEN, Song-jie WEI, et al. Load balancing multipath routing protocol for mass remote sensing data downlink in LEO satellite network[J]. Journal on Communications, 2017, 38(Z1): 135-142. DOI: 10.11959/j.issn.1000-436x.2017246.
Load balancing multipath routing protocol for mass remote sensing data downlink in LEO satellite network
LEO 卫星网络能够为各类用户提供全球无缝实时数据通信,近年来得到了快速发展。与此同时,空间数据源如遥感卫星的海量载荷数据下行体制依旧采用传统的存储转发方式,如果将此类卫星接入配有星间链路的LEO 卫星网络,可以有效提高空间任务数据的实时性。但是需要为这种应用需求设计专门的卫星网络负载均衡路由算法。针对视频卫星实时直播的应用场景,设计了一套并行链路不相交多径路由算法SPEMR。OPNET仿真结果表明SPEMR实现的多径方案的性能劣化指数为0.32,仅为TLR路由协议的32%,传统DSP方案的21%,具有相对更强的实时传输海量数据的能力。
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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