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Optical network self-adapting route system for low/middle orbit double-layer satellite and calculating method of agent route

An orbital satellite, low-orbit technology, applied in the field of satellite networks, can solve problems such as the inability to meet the needs of multi-wavelength satellite optical networks

Inactive Publication Date: 2009-10-07
AIR FORCE UNIV PLA
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  • Application Information

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Problems solved by technology

Therefore, no matter it is asynchronous transfer mode virtual routing, finite state machine link distribution routing protocol, data packet self-addressing routing algorithm, hierarchical satellite routing protocol, satellite packet routing protocol and multi-layer satellite network routing protocol, they cannot meet the needs of multi-wavelength satellite optical networks. network requirements

Method used

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  • Optical network self-adapting route system for low/middle orbit double-layer satellite and calculating method of agent route
  • Optical network self-adapting route system for low/middle orbit double-layer satellite and calculating method of agent route
  • Optical network self-adapting route system for low/middle orbit double-layer satellite and calculating method of agent route

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Experimental program
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Embodiment 1

[0128] In order to verify the routing algorithm, a two-layer satellite optical network process model, node model and network model are used to simulate the performance of the algorithm using Opnet network performance simulation software. The algorithm simulation results are as follows:

[0129] ①. After the initial warm-up state of the network, the received data reaches a steady state, and the average rate of the single-layer network is 102Mbps, such as image 3 As shown by the dotted line; the throughput of the double-layer network is 102.5Mbps, such as image 3 shown by the solid line. In the double-layer satellite network, due to the relay of the medium-orbit satellite, when the utilization rate of the inter-satellite laser link of the low-orbit satellite is very high, the data packet is forwarded through the medium-orbit satellite relay, so the packet loss rate is greatly reduced. If the network service source is on the order of several Gbps, the throughput advantage of t...

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Abstract

The invention discloses an optical network self-adapting route system for a low / middle orbit double-layer satellite. The system is connected with a satellite-ground access segment by a space segment route, a middle orbit satellite managing layer consists of at least four manager satellites and a manager satellite, the manager satellites and the manager satellite manage a low orbit satellite route layer directly, and the low orbit satellite route layer consists of one main proxy satellite, four secondary proxy satellites and at least 8 ordinary satellites which are connected. The calculating method comprises topological parameters; determination of the life span report of the access to the middle orbit satellite by the low orbit satellite; main proxy node and link; link time delay among satellites; time delay report of the low orbit satellite; time delay report of the middle orbit satellite; wavelength usage rate business load; and the calculation of route cost function. The optical network of the double-layer satellite is divided into an access network with highly dynamic change and a space segment core network of periodic change, the access network takes charge of network convergence between the space segment and the ground network, and the space segment uses a laser link among satellites to relay until reaching a service target satellite.

Description

technical field [0001] The invention relates to satellite network technology, in particular to a low / medium orbit double-layer satellite optical network self-adaptive routing system and proxy routing calculation method. Background technique [0002] The rapid rise of broadband services has prompted the development of satellite communications from bent-pipe to network-based. In broadband satellite communications, when the inter-satellite link exceeds 10Gbps, the laser inter-satellite link terminal is much superior to the corresponding microwave link terminal in terms of power consumption, volume and weight. With the realization of several Gbps high-speed optical cross-links, building a non-stationary orbit multi-layer satellite network based on laser links and integrating ground optical fiber networks to form an air-space-ground integrated network has become the best choice for global broadband access. . [0003] The existing satellite network finite state machine algorithm...

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Application Information

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IPC IPC(8): H04Q11/00H04B7/185H04B10/105H04J14/02H04W84/06H04B10/118
CPCH04B7/18521H04B7/1856
Inventor 赵尚弘李勇军吴继礼马丽华楚兴春李晓亮侯睿蒋晓阳
Owner AIR FORCE UNIV PLA
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