Inter-group routing method for distributed satellite network

A satellite network, distributed technology, applied in the field of constellation network, can solve problems such as distributed constellation routing, achieve the effect of improving routing efficiency and avoiding the increase of waiting time delay

Active Publication Date: 2014-03-12
DALIAN UNIV
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Problems solved by technology

[0003] In view of the above problems, the present invention proposes a routing method between ...

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  • Inter-group routing method for distributed satellite network
  • Inter-group routing method for distributed satellite network
  • Inter-group routing method for distributed satellite network

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Embodiment Construction

[0028] The specific embodiments of the present invention will be described in detail below in conjunction with the technical solutions and accompanying drawings.

[0029] Aiming at the fact that the existing satellite network routing algorithm uses the path length as the routing evaluation standard, which leads to the fact that the nearest path is not necessarily the optimal path, a fast and efficient routing selection algorithm is proposed. This method considers the state of the link, such as available bandwidth, transmission delay and bit error rate, etc., and applies the source-driven routing protocol (Ad hoc on-demand distance vector routing, AODV) to ensure that the path is reduced under the optimal path. The delay of satellite network communication is used to achieve the optimal purpose of communication.

[0030] Such as figure 1 As shown, a distributed satellite network constellation routing method according to an embodiment of the present invention includes:

[0031]...

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Abstract

The invention provides an inter-group routing method for a distributed satellite network. The inter-group routing method comprises the following steps: in the case that data in source satellite groups within the distributed satellite network needs to be sent, sending a routing request to main satellites of the respective satellite groups within the distributed satellite network; collecting the information of the satellite and pheromone values in an AODV (Ad Hoc on-demand distance vector) routing protocol once the routing request arrives at the main satellite of each satellite group; calculating the probability of sending the routing request to each satellite according to a next-hop selection algorithm, and selecting the next-hop satellite for sending the routing request from each satellite according to the calculated probability of each satellite; updating partial pheromones according to the time delay and available bandwidth of a link once a satellite is passed, and selecting the next-hop satellite for sending the routing request according to the partial pheromones; and generating a routing reply after the target satellite receives the routing request, thus establishing reverse routing between the source satellite and the target satellite. According to the inter-group routing method provided by the invention, a communication time delay is shortened, the available bandwidth of the link is increased, and the communication quality of the link is improved.

Description

technical field [0001] The invention belongs to the technical field of constellation networks, and relates to a routing method among distributed satellite network groups. Background technique [0002] At present, the existing satellite routing algorithms are divided into two categories: virtual topology routing algorithms and virtual node routing algorithms according to the topology of the network. Most of these satellite routing algorithms are designed for low-orbit satellites, the constellation topology changes quickly, and the state of the link is not considered. The topology of distributed constellations is relatively stable, so traditional routing protocols cannot be directly applied to distributed constellation networks. Contents of the invention [0003] Aiming at the above problems, the present invention proposes a routing method between distributed satellite network groups, which solves the problem of distributed satellite group routing. [0004] On the one hand...

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Application Information

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IPC IPC(8): H04W28/02H04W40/02H04L12/721H04L12/801
Inventor 刘治国张自敬
Owner DALIAN UNIV
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