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Wireless ad hoc network multi-controller communication method

A wireless self-organizing and self-organizing network technology, applied in wireless communication, network topology, sustainable communication technology, etc., to achieve clear functions, efficient view synchronization, and clear overall structure

Active Publication Date: 2022-05-31
10TH RES INST OF CETC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, existing SDN east-west solutions have many shortcomings in software-defined wireless network scenarios

Method used

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  • Wireless ad hoc network multi-controller communication method
  • Wireless ad hoc network multi-controller communication method
  • Wireless ad hoc network multi-controller communication method

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Experimental program
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Embodiment Construction

[0020] refer to figure 1 . According to the present invention, adopt following steps:

[0021] Step 1, based on the server / client architecture, in the software-defined wireless ad-hoc network, the software-defined wireless ad-hoc network system is oriented to the software-defined wireless ad-hoc network, building an east-west channel for heterogeneous multi-controller cooperative communication, and all SDN control As a client, the server actively establishes a connection with the server;

[0022] Step 2, according to the network view abstraction mechanism, based on the quality information of the wireless link between each SDN controller and the server, the view synchronization mode is divided into a coarse-grained mode and a fine-grained mode, and each SDN controller is based on the perceived wireless channel chain Compare the link quality with the set threshold. If the link quality is greater than the threshold, select the fine-grained mode, and the SDN controller will rep...

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Abstract

According to the wireless ad hoc network multi-controller communication method disclosed by the invention, the overall network architecture is clear, the control node function is definite, the channel bandwidth overhead is controllable, and the wireless channel utilization rate can be effectively improved. The method is realized through the following technical steps: step 1, on the basis of a server / client architecture, establishing east-west channels of controllers, and establishing TCP connection between the controllers; 2, determining a network view synchronization mode according to the connection, and determining a view synchronization mode by each controller based on the quality of a wireless link connected with the server; step 3, asynchronously reporting sub-domain view information to a server by each controller according to the network view synchronization mode; step 4, according to the reported sub-domain view information, the server integrates and stores global view information, when there is a cross-domain communication demand, the server issues the global information to a controller to which a source node belongs by adopting a warm backup mode, and the controller completes cross-domain path calculation; and the network robustness is improved.

Description

technical field [0001] The invention belongs to the technical field of software-defined wireless ad hoc networks, and in particular relates to an east-west communication method between multiple controllers of a software-defined wireless ad hoc network. Background technique [0002] At present, software-defined network has become a hot research field in computer network. The software-defined network architecture concentrates the control functions in the network into the controller by abstracting the control functions of the network devices, and the network devices become simple data packet forwarding devices, thus realizing the separation of the data plane and the control plane in the network. The initial software-defined network (Software Defined Network, SDN) proposed a very simple architecture, the purpose is only to allow researchers to quickly conduct SDN experiments, the entire network consists of a single controller and several switching devices. All switching devices...

Claims

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Application Information

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IPC IPC(8): H04W24/02H04W24/04H04W84/18
CPCH04W24/02H04W24/04H04W84/18Y02D30/70
Inventor 肖磊杨佩彤杜俊逸伍元胜倪大冬
Owner 10TH RES INST OF CETC
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