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A Design Method of Spatial Information Network Routing Strategy under SDN Architecture

A space information network, SDN architecture technology, applied in the design field of space information network routing strategy, can solve the problems of increasing satellite memory occupation and operating burden, different business utilization, etc., achieve good application prospects, reduce self-load, reduce satellite burden effect

Active Publication Date: 2021-06-01
DALIAN UNIV
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Problems solved by technology

However, this method requires the satellite to calculate the service weight to judge the service link when the service utilization rate is different, which increases the memory usage and operation burden of the satellite.

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  • A Design Method of Spatial Information Network Routing Strategy under SDN Architecture
  • A Design Method of Spatial Information Network Routing Strategy under SDN Architecture
  • A Design Method of Spatial Information Network Routing Strategy under SDN Architecture

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Embodiment Construction

[0080] The present invention will be further described below in conjunction with the accompanying drawings.

[0081] Such as figure 1 As shown, the SDN-based spatial information network routing strategy is to calculate the optimal route for each type of business through the coordinated scheduling of the entire network. The routing policy steps of the present invention's design are as follows:

[0082] Step1: The satellite exploration module of the GEO controller periodically sends LLDP data packets through the Packet_out message;

[0083] Step2: The satellite on the forwarding plane receives the data packet, and judges whether its receiving port is a controller port. If so, forward the data packet, otherwise, send the perception data packet to the controller through the Packet_in message;

[0084] Step3: The GEO controller receives the Packet_in message, obtains the topology status between the two satellite nodes, analyzes the link status information such as link bandwidth,...

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Abstract

The invention discloses a method for designing a routing strategy of a spatial information network under an SDN framework, comprising the following steps: establishing a spatial information network architecture based on a software-defined network (SDN); establishing a routing model of a spatial information network based on an SDN; establishing an improved genetic algorithm to solve the problem routing model. The invention utilizes the idea of ​​SDN numerical control separation, highly centralized logic on the control plane, can obtain the global network status in real time, and calculate the routing strategy. LEO and MEO do not need to calculate the routing by themselves, which reduces the load of the satellite itself and reduces power consumption. Aiming at the characteristics of the space information network, such as complex communication environment, strong node dynamics, limited on-board processing capability, and various business types, the present invention formulates an optimal space information network routing scheme under the SDN framework, and reduces the number of business types in the space information network. Transmission delay of data forwarding and reduction of packet loss rate.

Description

technical field [0001] The invention relates to a spatial information network routing strategy, in particular to a design method of a spatial information network routing strategy under a software-defined network (Software Defined Network, SDN) framework. Background technique [0002] The spatial information network transmits a wide variety of services, and the topological structure changes rapidly, resulting in frequent link switching or interruption, making it impossible to have a stable end-to-end link. In addition, the size and weight of satellites limit their on-board processing capabilities and cause inconvenience when calculating routes on their own, which brings great difficulties to the communication of spatial information networks. Therefore, it is of great significance to establish an effective routing strategy for the efficient operation of the spatial information network. [0003] The existing spatial information network routing is divided into single-layer rout...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/721H04L12/24
CPCH04L41/145H04L45/14Y02D30/50
Inventor 杨力潘成胜蔡睿妍孔志翔滕奇秀
Owner DALIAN UNIV
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