基于位置的天地一体化网络路由寻址机制研究

doi:10.11959/j.issn.1000-436x.2020135

Abstract

Abstract:

The ever-changing characteristics of the connection between the satellite network and the terrestrial network caused by the high-speed movement of the satellites have always been one of the most important problem that plagues the routing mechanism of the satellite network and integrated network.To address this problem,a location addressing based routing mechanism of integrated satellite and terrestrial network (LA-ISTN) was proposed.LA-ISTN exploited the user’s physical location in the user’s IP address to calculate the routing orientation.Based on the orientation,LA-ISTN could choose the best forward interface.Theoretical analysis and simulation experiments show that compared with snapshot protocol and OSPF routing protocol,LA-ISTN significantly reduces the route table storage overhead,with no routing updates cost caused by neighbor packet switching and communication.Inter-satellite route selection is not dependent on the prediction of link connection relations,with strong robustness,can always guarantee the network’s availability.

Key words: location, addressing mechanism, routing, integrated satellite and terrestrial network

CLC Number:

TP393.4

Hewu LI,Lixin LIU,Jun LIU,Qian WU. Location based routing addressing mechanism of integrated satellite and terrestrial network[J]. Journal on Communications, 2020, 41(8): 120-129.

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References 24

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参数	参数值
轨道数目/条	6
每个轨道面上卫星数目/颗	7、11、15、19、23
卫星节点总数/个	42、66、90、114、138
轨道高度/km	781
轨道倾角	86.4°

网络节点规模/个	路由更新次数/次	可用时长占比
82	430	9.97%
106	665	8.67%
130	884	7.50%
154	1 086	7.14%
178	1 293	6.53%

网络节点规模/个	RP-ISA/ms	IA-ISA/ms	最短路径/ms
82	42.484 5	42.484 5	42.484 5
106	39.960 4	39.960 4	39.960 4
130	40.537 3	31.837 8	31.837 8
154	41.720 4	34.137 1	34.137 1
178	42.567 8	35.474 0	35.474 0

Location based routing addressing mechanism of integrated satellite and terrestrial network

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