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NC centralized control method in software-defined FiWi network

A software-defined, network technology, applied in electrical components, optical fiber transmission, digital transmission systems, etc., can solve problems such as information redundancy business localization

Inactive Publication Date: 2017-01-04
河北云萃网络科技有限公司
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing research on implementing network coding in software-defined networks can improve the performance of network throughput and delay, but none of them is oriented towards software-defined FiWi network architecture to realize centralized control of network coding in FiWi networks and solve information redundancy. and business localization trends

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  • NC centralized control method in software-defined FiWi network
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Embodiment Construction

[0017] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0018] 1. Software-defined FiWi network architecture design

[0019] The software-defined FiWi network architecture is divided into three layers, such as figure 1 As shown, from bottom to top are the infrastructure layer, control layer and application layer. The infrastructure layer includes OLT, Optical Network Unit-Mesh Portal Point (ONU-MPP) and wireless access point (Mesh Access Point, MAP) in the FiWi network. The forwarding control logic is decoupled and forms an independent control layer. This infrastructure layer acts as the forwarding plane in the original switching / routing device. Each infrastructure node is equivalent to an openflow switch, which is connected to the controller at the control layer through the openflo...

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Abstract

The present invention discloses a network code (NC) centralized control method in a software-defined FiWi network. On the basis of providing a novel software-defined FiWi network architecture having the network coding function, the network coding function of a flow table is expanded, and the coding of the network is centralized in a controller. Therefore, the controller is capable of controlling the screening of source code packets and the queue length of an encoding pack. Based on the openflow protocol, the deployment of a network encoding strategy is realized. In this way, the number of control messages in the network is reduced and data packets can be quickly coded, decoded and forwarded. Therefore, the utilization rate of network bandwidth is improved and the network coding efficiency is increased. The network transmission delay is lowered.

Description

technical field [0001] The invention relates to a network coding (Network Coding, NC) centralized control method in a software-defined fiber wireless (Fiber Wireless, FiWi) hybrid access network, and belongs to the technical field of fiber wireless hybrid access networks. Background technique [0002] The FiWi network combines the characteristics of large capacity and low power consumption of optical fiber access with the mobility and flexibility of wireless access. As a solution for the "last mile" of broadband access, it is considered to be one of the most promising access methods. First, it plays an important role in the communication network. With the increasing number of FiWi network nodes and the rapid development of peer-to-peer (Peer-to-peer, P2P) network file sharing, video-on-demand, video conferencing and other services, network services are increasingly localized, and the bandwidth requirements of access networks become an urgent problem to be solved. Network c...

Claims

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Application Information

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IPC IPC(8): H04B10/25H04B10/2575H04L1/00
Inventor 刘心刘杰李文竹
Owner 河北云萃网络科技有限公司
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