An AODV Routing Method for Distributed Satellite Networks

A satellite network and distributed technology, applied in the field of satellite network communication, can solve problems such as waste of bandwidth resources, achieve full utilization and reduce impact

CN108366017BInactive Publication Date: 2020-06-23BEIJING JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2020-06-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an AODV routing method for a distributed satellite network. The method adds bandwidth parameters to the RREQ and RREP messages and routing tables in the routing process of the AODV routing protocol, and modifies the RREQ and RREP messages and routing of nodes in the routing process. The processing flow of the table to find an optimal path. The present invention can not only ensure the bandwidth of the transmitted data in the distributed satellite network, reduce the influence of the bandwidth on the transmitted data, but also ensure that the bandwidth resources of the distributed satellite network can be fully utilized.
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Description

technical field

[0001] The invention relates to the field of satellite network communication. More specifically, it relates to an AODV routing method for distributed satellite networks. Background technique

[0002] With the development of world globalization, the ground communication network can no longer meet the communication needs, and satellite communication technology has emerged as the times require. Since the 1990s, satellite communication technology has developed rapidly, and the scale of satellite networks has gradually expanded. It is used in various communication fields, including long-distance telephone, television broadcasting, emergency services, traffic information, military reconnaissance, space defense and other civil and military applications. field. However, due to factors such as the complexity of satellite network technology and the shortage of space resources, the development of space satellite networks is far behind that of ground mobile networks. ...

Examples

example 1

[0047] set as Figure 5 The minimum available bandwidth of the path T1-CA1-CR1 in the shown satellite network topology is 2.2Mb / s and the minimum available bandwidth of the path T1-CA2-CR1 is 2.4Mb / s;

[0048] The source node broadcasts the RREQ message to the two paths. During the transfer process, the RREQ obtains the minimum available bandwidth of 2.2Mb / s and 2.4Mb / s respectively. When it reaches the destination node, an RREP message is generated and the minimum available bandwidth parameter is passed to RREP information;

[0049] The destination node returns the RREP message according to the reverse route formed. The source node first receives the minimum available bandwidth in the RREP message returned by the path T1-CA1-CR1 is greater than the minimum bandwidth required for sending, directly generates an effective routing table, and sends data.

example 2

[0051] set as Figure 5 The minimum available bandwidth of the path T1-CA1-CR1 in the shown satellite network topology is 1.8Mb / s and the minimum available bandwidth of the path T1-CA2-CR1 is 2.4Mb / s;

[0052] The source node broadcasts the RREQ message to the two paths. During the transfer process, the RREQ obtains the minimum available bandwidth of 1.8Mb / s and 2.4Mb / s respectively. When it reaches the destination node, an RREP message is generated and the minimum available bandwidth parameter is passed to RREP information;

[0053] The destination node returns the RREP message to the source node according to the reverse path of the RREP message generated by them. The source node first receives the RREP message returned by the path T1-CA1-CR1, and the minimum available bandwidth is 1.8Mb / s, which is less than The bandwidth required for the minimum transmission, generating an invalid routing table;

[0054] Within the time threshold, the source node receives the RREP message...

example 3

[0056] set as Figure 5 The minimum available bandwidth for the path T1-CA1-CR1 in the satellite network topology shown is 1.6Mb / s and the minimum available bandwidth for the path T1-CA2-CR1 is 1.8Mb / s;

[0057] The source node broadcasts the RREQ message to the two paths. During the transfer process, the RREQ obtains the minimum available bandwidth of 1.6Mb / s and 1.8Mb / s respectively. When it reaches the destination node, an RREP message is generated and the minimum available bandwidth parameter is passed to RREP information;

[0058] The destination node returns the RREP message to the source node according to the reverse path of the RREP message generated by them. The source node first receives the RREP message returned by the path T1-CA1-CR1, and the minimum available bandwidth is 1.6Mb / s, which is less than The bandwidth required for the minimum transmission, generating an invalid routing table;

[0059] Within the time threshold, the source node receives the RREP messa...