軟件定義時(shí)分波分復(fù)用無(wú)源光網(wǎng)絡(luò)中基于帶寬預(yù)測(cè)的資源分配策略

熊余; 楊婭婭; 張振振; 蔣婧

doi:10.11999/JEIT180837

軟件定義時(shí)分波分復(fù)用無(wú)源光網(wǎng)絡(luò)中基于帶寬預(yù)測(cè)的資源分配策略

doi: 10.11999/JEIT180837

熊余^{1, 2, 3, ,},
楊婭婭^{1, 2, 3},
張振振^{1, 2, 3},
蔣婧^{1, 2, 3, 4}

1.
重慶郵電大學(xué)通信與信息工程學(xué)院? ?重慶? ?400065
2.
重慶高校市級(jí)光通信與網(wǎng)絡(luò)重點(diǎn)實(shí)驗(yàn)室? ?重慶? ?400065
3.
泛在感知與互聯(lián)重慶市重點(diǎn)實(shí)驗(yàn)室? ?重慶? ?400065
4.
國(guó)網(wǎng)重慶市電力公司檢修分公司? ?重慶? ?400039

基金項(xiàng)目: 國(guó)家自然科學(xué)基金(61401052)，國(guó)家留學(xué)基金委(201608500030)，重慶市教委科學(xué)技術(shù)研究資助項(xiàng)目(KJ1400418, KJ1500445)，重慶郵電大學(xué)博士啟動(dòng)基金(A2015-09)

詳細(xì)信息

作者簡(jiǎn)介:
熊余：男，1982年生，研究員，博士，研究方向?yàn)閷拵ЬW(wǎng)絡(luò)的服務(wù)質(zhì)量控制、綠色節(jié)能技術(shù)及可靠性抗毀技術(shù)

楊婭婭：女，1994年生，碩士生，研究方向?yàn)榛跁r(shí)分波分復(fù)用的下一代無(wú)源網(wǎng)絡(luò)資源分配算法

張振振：男，1988年生，碩士生，研究方向?yàn)榛跁r(shí)分波分復(fù)用的下一代無(wú)源網(wǎng)絡(luò)資源分配策略

蔣婧：女，1988年生，碩士生，研究方向?yàn)榛跁r(shí)分波分復(fù)用的下一代無(wú)源網(wǎng)絡(luò)資源調(diào)度算法

通訊作者:
熊余　xiongyu@cqupt.edu.cn

中圖分類號(hào): TN929.1
計(jì)量
- 文章訪問(wèn)數(shù): 2023
- HTML全文瀏覽量: 791
- PDF下載量: 58
- 被引次數(shù): 0
出版歷程
- 收稿日期: 2018-08-27
- 修回日期: 2019-02-09
- 網(wǎng)絡(luò)出版日期: 2019-02-25
- 刊出日期: 2019-08-01

Resource Allocation Based on Bandwidth Prediction in Software-defined Time and Wavelength Division Multiplexed Passive Optical Network

Yu XIONG^{1, 2, 3
, ,},
Yaya YANG^{1, 2, 3},
Zhenzhen ZHANG^{1, 2, 3},
Jing JIANG^{1, 2, 3, 4}

1.
School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
2.
Key Laboratory of Optical Communication and Network in Chongqing, Chongqing 400065, China
3.
Key Laboratory of Ubiquitous Sensing and Networking in Chongqing, Chongqing 400065, China
4.
Maintenance Branch Company, State Grid Chongqing Electric Power Company, Chongqing 400039, China

Funds: The National Natural Science Foundation of China(61401052), The Project of the China Scholarship Council(201608500030), The Science and Technology Research Project of Chongqing Municipal Education Commission (KJ1400418, KJ1500445), The Doctoral Start-up Fund of Chongqing University of Posts and Telecommunications (A2015-09)

摘要

摘要: 針對(duì)時(shí)分波分復(fù)用無(wú)源光網(wǎng)絡(luò)(TWDM-PON)多個(gè)光線路終端(OLT)間資源缺乏協(xié)同集中調(diào)度問(wèn)題，該文提出一種帶有軟件定義的基于帶寬預(yù)測(cè)的資源分配策略(RABP)。在光線路終端間，設(shè)計(jì)粒子群優(yōu)化的BP神經(jīng)網(wǎng)絡(luò)模型預(yù)測(cè)各光線路終端所需帶寬，避免了控制器與光線路終端信息交互時(shí)延對(duì)資源分配實(shí)時(shí)性的影響；其次，在光線路終端內(nèi)，動(dòng)態(tài)設(shè)定滑動(dòng)周期并基于光網(wǎng)絡(luò)單元授權(quán)信息實(shí)時(shí)統(tǒng)計(jì)資源池共享帶寬，同時(shí)，設(shè)計(jì)負(fù)載均衡的波長(zhǎng)調(diào)度機(jī)制實(shí)現(xiàn)多波長(zhǎng)的高效利用。仿真結(jié)果表明，該策略提高了信道資源利用率，降低了平均包時(shí)延。
- 軟件定義網(wǎng)絡(luò) /
- 時(shí)分波分復(fù)用無(wú)源光網(wǎng)絡(luò) /
- 神經(jīng)網(wǎng)絡(luò) /
- 帶寬預(yù)測(cè) /
- 資源分配 /
- 滑動(dòng)周期
Abstract: Considering lacking of centralized and synergistic scheduling for time-slots and wavelength resources of the inter-TWDM-PONs, a novel Resource Allocation based on Bandwidth Prediction (RABP) strategy with software-defined centralized schedule is proposed. For intra-Optical Line Terminal (OLT), the BP neural network model based on Particle Swarm Optimization (PSO) algorithm is designed to predict the required bandwidth of each OLT in order to avoid the impact of delay between controller and OLT on real-time resource allocation. For inter-OLT, the slide cycle is dynamically set, and then the shared bandwidth of resource pool is counted in real-time according to the authorized information of optical network unit. In the process of wavelength scheduling, a wavelength scheduling mechanism with load balancing to achieve efficiently utilizing of wavelength resource is designed. The simulation results show that the proposed strategy not only effectively improves the utilization of channel resources, but also reducs the average packet delay.
- Software-Defined Network (SDN) /
- Time and Wavelength Division Multiplexed Passive Optical Network (TWDM-PON) /
- Neural network /
- Bandwidth prediction /
- Resource allocation /
- Slide cycle

HTML全文

圖 1 軟件定義光接入網(wǎng)架構(gòu)

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圖 2 BP神經(jīng)網(wǎng)絡(luò)模型

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圖 3 ONU的滑動(dòng)周期

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圖 4 基于資源池共享帶寬

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圖 5 基于ONU數(shù)據(jù)塊大小的波長(zhǎng)調(diào)度

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圖 6 網(wǎng)絡(luò)拓?fù)?/p>

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圖 7 不同策略下平均包時(shí)延

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圖 8 不同波長(zhǎng)數(shù)RABP的平均包時(shí)延

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圖 9 不同策略下上行信道資源利用率圖

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圖 10 不同波長(zhǎng)數(shù)下上行信道資源利用率

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表 1 公式符號(hào)含義

符號(hào)	含義
N	ONU的數(shù)目
M	波長(zhǎng)數(shù)
R	傳輸速率
${T_{\max}}$	最大輪詢周期
${T_{{\rm{sl}}}}$	滑動(dòng)周期
${t_g}$	ONU之間的保護(hù)時(shí)隙
${B_{\min}}$	最小保證帶寬
${t_i}$	ONU_i數(shù)據(jù)傳輸時(shí)間
$t_i^{s, K}$	在第K個(gè)周期${\rm{ON}}{{\rm{U}}_i}$傳輸數(shù)據(jù)的開(kāi)始時(shí)刻
${\lambda _j}$	第j條波長(zhǎng)
${t_c}$	GATE幀或REPORT幀的傳輸時(shí)間
${e_{ij}}$	波長(zhǎng)${\lambda _j}$與${\rm{ON}}{{\rm{U}}_i}$與之間的關(guān)系
${R_i}$	${\rm{ON}}{{\rm{U}}_i}$的請(qǐng)求帶寬
${G_i}$	${\rm{ON}}{{\rm{U}}_i}$的授權(quán)帶寬
${O_i}$	${\rm{ONU}}_i$的額外授權(quán)帶寬
$B_i^{\rm{po}}$	資源池共享帶寬

下載: 導(dǎo)出CSV

參考文獻(xiàn)(15)

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