A method of inter-satellite routing in low-orbit satellite communication network
A technology for communication networks and low-orbit satellites, applied in electrical components, radio transmission systems, transmission systems, etc., can solve problems such as errors and performance impacts, and achieve the effect of high storage requirements, considerable application prospects, and difficult real-time calculation.
Active Publication Date: 2022-06-17
SOUTHEAST UNIV +1
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However, there is an error between the position of the virtual satellite node and the position of the actual satellite node, which will have a certain impact on performance
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[0030] The technical solutions of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0031] The embodiment of the present invention provides an inter-satellite routing method in a low-orbit satellite communication network, which is a routing method based on inter-satellite link state information. Each satellite node sends a hello packet to the neighbor node, and records the link status information locally through the data of the hello packet. The link status information includes the transmission delay of the corresponding inter-satellite link and the logical address of the corresponding satellite node in the network. And node failure and congestion information in the network. The node will select an appropriate routing path according to the locally stored link state information. as attached figure 1 As shown, the method includes the following processes:
[0032] (1) Logical address establishment stag...
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The invention proposes an inter-satellite routing method in a low-orbit satellite communication network, which is a dynamic inter-satellite network routing method based on heartbeat packet technology. First of all, each satellite node in the network uses the heartbeat packet mechanism to maintain information such as dynamic links with neighbor nodes and node logical addresses, and then maintains a satellite communication network topology composed of logical addresses. According to the relative position of the source node and the destination node, first determine the number of intra-track hops and inter-track hops, then determine the vertical transmission direction and horizontal transmission direction of the data packet, and finally, determine the priority of vertical transmission and horizontal transmission. In addition, when there is a link fault or congestion, the information of the faulty link is flooded in the network, and the avoidance algorithm is used to avoid the faulty link and select an appropriate route. The above method can dynamically perform satellite node routing in the event of node failure in the low-orbit satellite communication network, and has a small routing overhead and average end-to-end delay.
Description
technical field [0001] The invention relates to the field of routing in a low-orbit satellite communication network, in particular to an inter-satellite routing method in a low-orbit satellite communication network. Background technique [0002] Low Earth Orbit Satellite Communication Network (Low Earth Orbit Satellite Communication Network) has received more and more research attention because of its broad application prospects. These applications are generally based on satellite communication with large-scale coverage, long-distance transmission, and flexible access. and other advantages, such as mobile communication, navigation and positioning, military applications, etc. Low Earth Orbit (LEO) satellites have many advantages such as low transmission loss, communication test sites, and low power consumption. However, in order to achieve seamless global coverage, multiple satellites are required to form a low-orbit satellite constellation to provide global broadband mobile....
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IPC IPC(8): H04B7/185H04L45/28H04L45/00H04L45/74
CPCH04B7/18513H04B7/18519H04L45/28H04L45/32H04L45/74
Inventor 燕锋张路章跃跃夏玮玮沈连丰胡静宋铁成
Owner SOUTHEAST UNIV