本文選題：軟件定義網(wǎng)絡(luò) + 移動(dòng)切換��； 參考：《應(yīng)用科學(xué)學(xué)報(bào)》2017年01期

【摘要】：為提高無線切換時(shí)的網(wǎng)絡(luò)性能,采用軟件定義網(wǎng)絡(luò)架構(gòu)并提出基于多路徑傳輸控制協(xié)議的移動(dòng)切換管理方法.根據(jù)所提出的基于模糊邏輯的多屬性切換算法進(jìn)行切換判決,綜合采用當(dāng)前信號(hào)強(qiáng)度(received signal strength,RSS),預(yù)測(cè)RSS值以及可用帶寬作為網(wǎng)絡(luò)參數(shù)來設(shè)計(jì)模糊邏輯控制器.然后計(jì)算各參數(shù)的隸屬度值,通過計(jì)算綜合性能評(píng)估值進(jìn)行切換判決.在切換管理的實(shí)現(xiàn)過程中,傳輸層采用多路徑傳輸控制協(xié)議,允許建立多條傳輸路徑傳輸數(shù)據(jù).設(shè)備可利用該協(xié)議同時(shí)連接多個(gè)接入點(diǎn),一條鏈路發(fā)生切換時(shí)其余鏈路繼續(xù)保持通信.最后搭建了一個(gè)Open Flow試驗(yàn)床來驗(yàn)證該切換管理方法,結(jié)果表明該方法可實(shí)現(xiàn)設(shè)備的無縫切換,保證用戶服務(wù)質(zhì)量.
[Abstract]:In order to improve the network performance of wireless handoff, the network architecture is defined by software and a mobile handoff management method based on multipath transmission control protocol is proposed. According to the proposed multi-attribute handoff algorithm based on fuzzy logic, the fuzzy logic controller is designed by synthetically using the current signal intensity received signal strength signal, predicting the value of signal and the available bandwidth as network parameters. Then, the membership value of each parameter is calculated, and the switching decision is made by calculating the comprehensive performance evaluation value. In the implementation of handoff management, multipath transmission control protocol is adopted in the transport layer, which allows the establishment of multiple transmission paths to transmit data. The device can use the protocol to connect multiple access points simultaneously, and the remaining links continue to communicate when one link is switched. Finally, an Open flow test bed is built to verify the proposed handover management method. The results show that the proposed method can achieve seamless switching of devices and ensure the quality of service of users.
【作者單位】： 南京航空航天大學(xué)計(jì)算機(jī)科學(xué)與技術(shù)學(xué)院;
【基金】：江蘇省科技項(xiàng)目基金(No.BY2013095-2-10) 澳門特別行政區(qū)科學(xué)技術(shù)發(fā)展基金(No.063/2010/A)資助
【分類號(hào)】：TN915.04

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