A Multicast Routing Method Applicable to Hierarchical Air Ad Hoc Networks

Abstract

The invention discloses a multicast routing method suitable for a hierarchical air ad hoc network, which solves the problem that the prior art cannot meet the service requirements of the hierarchical air ad hoc network. The specific implementation steps of the present invention are mainly as follows: 1. The self-organizing network in the air generates a multicast routing table; 2. The multicast source node of the backbone network sends a control packet, and the subnet node and the backbone network node receive and process the control packet; 3. The source node of the backbone network Send multicast data packets, backbone network nodes and subnet nodes receive and process multicast data packets. The multicast routing algorithm designed by the present invention is suitable for hierarchical self-organizing networks in the air, wherein the multicast routing maintenance process of the backbone network fully utilizes the link duration and the unicast routing of the backbone network, reducing overhead; the subnet multicast routing is established using The method of flooding and pruning effectively avoids the waste of resources.

Description

technical field [0001] The invention belongs to the technical field of communication, and further relates to a multicast routing method suitable for hierarchical air self-organizing networks in the technical field of network communication protocols. The invention can ensure reliable data transmission on the backbone network and fast and effective multicast data transmission in the subnet according to the layered characteristics of the self-organizing network in the air. Background technique [0002] AdHoc network is a new type of wireless self-organizing network, which is different from the commonly used cellular network and wireless local area network. It consists of a group of mobile nodes with wireless transceivers. Quickly set up a wireless network anywhere, so it has received more and more attention in recent years. Secondly, with the continuous growth of multicast service requirements, multicast routing technology is becoming more and more important in AdHoc networks....

AI Technical Summary

Problems solved by technology

The establishment of the backup route can change with the dynamic changes of the source tree, but it is always limited to the range of one hop around the source tree, which limits the range of nodes participating in the backup route and achieves the purpose of effectively controlling the processing overhead

The shortcomings of this method are: firstly, it does not take into account the hierarchical characteristics of the wireless self-organizing network in the air, and the backbone network and subnetwork have different business requirements; Routing and dynamically maintaining the source tree can lead to relatively high overhead

The disadvantage of this method is that the important factor of wireless link duration is not considered, so that frequent disconnection of the link due to the fast moving speed of the node will cause data loss

The disadvantage of this method is that it does not take into account the hierarchical characteristics of the wireless self-organizing network in the air, and the backbone network and the subnet have different business requirements.

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