本文選題：SDN + WLAN��； 參考：《電子科技大學(xué)》2017年碩士論文

【摘要】：移動(dòng)互聯(lián)網(wǎng)飛速發(fā)展,無(wú)線網(wǎng)絡(luò)已成為人們通信和日常信息獲取的主要方式。無(wú)線接入網(wǎng)絡(luò)不僅要提供網(wǎng)絡(luò)服務(wù),也需要滿足各種不同場(chǎng)景接入需求。無(wú)線網(wǎng)絡(luò)用戶數(shù)量的激增與各種網(wǎng)絡(luò)管理定義模塊的出現(xiàn)都預(yù)示著新一代無(wú)線網(wǎng)絡(luò)將走向更深程度的自定義。軟件定義網(wǎng)絡(luò)(SDN,Software Defined Network)的集中控制以及可編程特性都是應(yīng)現(xiàn)代網(wǎng)絡(luò)的需求而生。同樣,易于部署、靈活可控、便于管理成為新一代無(wú)線接入網(wǎng)絡(luò)架構(gòu)能否成功應(yīng)用的重要考量條件�；谶@些需求,首先,本文總結(jié)了目前SDN技術(shù)與WLAN結(jié)合的現(xiàn)狀,說(shuō)明SDN技術(shù)應(yīng)用在無(wú)線網(wǎng)絡(luò)中解決的問(wèn)題及已有解決方案的優(yōu)缺點(diǎn)。隨后,提出了基于SDN思想的Biacn接入控制架構(gòu)設(shè)計(jì)思路,通過(guò)在無(wú)線網(wǎng)絡(luò)不同位置部署控制器代理軟件與接入點(diǎn)代理軟件,實(shí)現(xiàn)對(duì)接入點(diǎn)和無(wú)線用戶的靈活配置管控。并且利用控制代理軟件提供的API可以完成無(wú)線網(wǎng)絡(luò)的靈活部署與深度自定義,實(shí)現(xiàn)不同接入需求。通過(guò)雙邊代理軟件的配合,可以根據(jù)需求更改配置粒度與接入控制條件,提高了無(wú)線網(wǎng)絡(luò)部署效率。文中詳細(xì)介紹了Biacn架構(gòu)各個(gè)模塊的功能與架構(gòu)通信協(xié)議ACAMP的設(shè)計(jì),闡述了Biacn接入控制架構(gòu)的創(chuàng)新點(diǎn)與優(yōu)勢(shì)。另外,本文給出了Biacn架構(gòu)實(shí)現(xiàn)的具體方法,詳細(xì)介紹了控制端代理軟件與接入點(diǎn)代理軟件的代碼設(shè)計(jì)細(xì)節(jié)和實(shí)現(xiàn)流程。并對(duì)架構(gòu)中實(shí)現(xiàn)的WLAN管控功能進(jìn)行一一測(cè)試,給出測(cè)試結(jié)果分析,說(shuō)明Biacn架構(gòu)中雙邊代理機(jī)制對(duì)整體無(wú)線網(wǎng)絡(luò)接入控制的影響。文章最后,基于Biacn提出了一種面向用戶的接入控制機(jī)制,利用架構(gòu)對(duì)WLAN的動(dòng)態(tài)監(jiān)控優(yōu)勢(shì),保障其中部分用戶得到的網(wǎng)絡(luò)服務(wù)質(zhì)量。Biacn架構(gòu)因其自身可擴(kuò)展、可編程等特性可以為無(wú)線網(wǎng)絡(luò)開(kāi)發(fā)管理者提供軟件層面的封裝調(diào)用,提高WLAN組網(wǎng)和管理的可控與靈活性,降低管理人員維護(hù)的難度與成本。Biacn架構(gòu)將原本只允許靜態(tài)配置的無(wú)線網(wǎng)絡(luò)轉(zhuǎn)化成可深度定義自由擴(kuò)展的軟件定義無(wú)線網(wǎng)絡(luò)(SDWN),實(shí)現(xiàn)網(wǎng)絡(luò)部署自動(dòng)化與用戶接入的自由控制。
[Abstract]:With the rapid development of mobile Internet, wireless network has become the main way for people to communicate and obtain daily information. Wireless access networks not only provide network services, but also meet the needs of different scenarios. The proliferation of wireless network users and the emergence of various network management definition modules indicate that a new generation of wireless networks will move towards a deeper level of customization. The centralized control and programmable features of SDNN software Defined network are designed to meet the needs of modern networks. Similarly, ease of deployment, flexibility and management are important considerations for successful application of the new generation wireless access network architecture. Based on these requirements, firstly, this paper summarizes the current situation of the combination of SDN technology and WLAN, and explains the problems solved by SDN technology in wireless network and the advantages and disadvantages of existing solutions. Then, the design idea of Biacn access control architecture based on SDN is put forward. Through deploying controller agent software and access point agent software in different locations of wireless network, the flexible configuration control of access point and wireless user is realized. And the API provided by the control agent software can accomplish the flexible deployment and depth customization of wireless network and realize different access requirements. Through the cooperation of bilateral agent software, the configuration granularity and access control conditions can be changed according to the demand, and the efficiency of wireless network deployment can be improved. In this paper, the function of each module of Biacn architecture and the design of ACAMP are introduced in detail, and the innovation points and advantages of Biacn access control architecture are expounded. In addition, this paper gives the implementation method of Biacn architecture, and introduces the code design details and implementation flow of the control side agent software and the access point agent software in detail. The WLAN control function implemented in the architecture is tested one by one, and the test results are analyzed to illustrate the influence of the bilateral agent mechanism in the Biacn architecture on the overall wireless network access control. Finally, this paper proposes a user-oriented access control mechanism based on Biacn, which can make use of the dynamic monitoring advantage of the architecture to ensure that some of the users get the network quality of service. Biacn architecture is extensible because of its own. Programmable features can provide software level encapsulation calls for wireless network development managers and improve the controllability and flexibility of WLAN networking and management. To reduce the difficulty and cost of management maintenance. Biacn architecture transforms the wireless network which was only allowed to be statically configured into a software-defined wireless network with deep definition and free extension to realize the automation of network deployment and the free control of user access.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TN925.93

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本文編號(hào)：1902932