Wireless access controller deployment method based on SDN (Software Defined Network)

A wireless access and controller technology, applied in wireless communication, network planning, data exchange through path configuration, etc., can solve the problem that the controller does not have a global view, reduce the advantages of SDN, etc., and achieve good scalability and robustness , to overcome the delay problem, the effect of high reliability

Inactive Publication Date: 2016-08-31
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

This controller deployment method avoids the problems of scalability and processing delay to a certain extent, but the ...

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  • Wireless access controller deployment method based on SDN (Software Defined Network)
  • Wireless access controller deployment method based on SDN (Software Defined Network)

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Embodiment Construction

[0028] The present invention provides an SDN-based wireless access controller deployment method. The deployment method is based on the basic idea of ​​SDN, and by separating the control and data forwarding functions in the wireless access network, the wireless access controller includes a global controller and multiple access network domain controllers. The global controller runs on the cloud platform and is responsible for setting up an event-based publishing and subscribing system. The access network domain controller updates the system status of the controlled area through the publishing and subscribing system; The controller acquires network load information and traffic information, builds a network view of the entire network, and sends it to the access domain controller periodically.

[0029] The present invention avoids the limitation of using a single access network controller to control the network, and provides local services for each user flow through each access net...

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Abstract

The invention discloses a wireless access controller deployment method based on an SDN (Software Defined Network), and belongs to the technical field of wireless communication networks. The deployment method comprises the following steps that: a plurality of access network domain controllers process flow table establishment or update requests of base stations or access points which are directly connected with the plurality of access network domain controllers; a global controller runs on a cloud platform to construct an event-based publishing and subscribing system, and is connected with the access network domain controllers to construct physically-distributed and logically-centralized wireless access controller deployment architecture; and the access network domain controllers communicate with management applications running on the access network domain controllers through a northbound protocol, and communicate with an underlying data surface through a southbound protocol. Through adoption of the wireless access controller deployment method, the problem of delay in concurrent request processing in centralized control of a conventional single controller is solved; the advantage of a centralized control thought of the SDN is kept; and global optimal scheduling can be performed. The deployment method has very high extensibility and robustness.

Description

technical field [0001] The invention belongs to the technical field of wireless communication networks, and relates to a novel heterogeneous wireless network based on SDN, mobility management, network architecture, etc., and specifically relates to a deployment method of a wireless access controller based on a software-defined network (SDN), which is applied to in a heterogeneous wireless access network. Background technique [0002] With the continuous improvement of terminal hardware computing capabilities and the gradual opening of terminal capabilities, various terminal applications have shown explosive growth, and network traffic has also shown exponential growth. However, the wireless access network is still in a very closed state, and the control logic and data forwarding are tightly coupled in the network equipment. The management and upgrade of the network requires complex configuration and operation of the network equipment and protocols. A huge contradiction aris...

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Application Information

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IPC IPC(8): H04L12/28H04W16/18
CPCH04L12/2858H04W16/18
Inventor 马璐路兆铭温向明王鲁晗刘唯毓管婉青
Owner BEIJING UNIV OF POSTS & TELECOMM
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