【摘要】：光無(wú)線融合網(wǎng)絡(luò)中光域和無(wú)線域存在速率不匹配以及業(yè)務(wù)分類(lèi)不同的問(wèn)題。為提高融合網(wǎng)絡(luò)的QoS及充分利用網(wǎng)絡(luò)資源,該文提出一種基于令牌桶算法的流量整形策略。根據(jù)EPON與WiMAX業(yè)務(wù)的QoS映射以及調(diào)度策略,以業(yè)務(wù)在整個(gè)網(wǎng)絡(luò)中的相對(duì)優(yōu)先級(jí)來(lái)決定令牌桶參數(shù)的選擇,并結(jié)合更符合實(shí)際的自相似網(wǎng)絡(luò)流量推導(dǎo)出最佳令牌桶參數(shù)計(jì)算公式,并在此基礎(chǔ)上,提出基于優(yōu)先級(jí)的共享緩存策略,進(jìn)而,得到通過(guò)QoS指標(biāo)的變化而自適應(yīng)動(dòng)態(tài)調(diào)整的流量整形策略。仿真結(jié)果表明,所提流量整形策略能夠有效降低網(wǎng)絡(luò)設(shè)備壓力,同時(shí)提高整個(gè)融合網(wǎng)絡(luò)的QoS。
[Abstract]:In optical and wireless fusion networks, there are problems of rate mismatch and different service classification between optical domain and wireless domain. In order to improve the QoS of converged network and make full use of network resources, this paper proposes a traffic shaping strategy based on token bucket algorithm. According to the QoS mapping and scheduling strategy of EPON and WiMAX services, the choice of token bucket parameters is determined by the relative priority of service in the whole network, and the calculation formula of optimal token bucket parameters is derived based on more practical self-similar network traffic. On this basis, the shared cache strategy based on priority is proposed, and then the traffic shaping strategy which adaptively adjusts dynamically through the change of QoS index is obtained. The simulation results show that the proposed traffic shaping strategy can effectively reduce the pressure of network equipment and improve the QoS. of the whole converged network.
【作者單位】： 重慶郵電大學(xué)通信與信息工程學(xué)院;重慶高校市級(jí)光通信與網(wǎng)絡(luò)重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家自然科學(xué)基金(61371097,61401052,61271261) 重慶市教委科學(xué)技術(shù)研究項(xiàng)目(KJ1400418) 重慶市青年科技人才培養(yǎng)計(jì)劃(CSTC2014KJRC-QNRC40001) 重慶市高等學(xué)校青年骨干教師資助計(jì)劃(渝教人[2014]47號(hào)) 重慶高校創(chuàng)新團(tuán)隊(duì)建設(shè)計(jì)劃(CXTDX201601020)~~
【分類(lèi)號(hào)】：TN915.6

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