OFDM无源光网络中多业务分层带宽分配算法

doi:10.11959/j.issn.1000-436x.2018159

通信学报 ›› 2018, Vol. 39 ›› Issue (9): 84-93.doi: 10.11959/j.issn.1000-436x.2018159

• 论文Ⅱ：光传输系统与光网络优化 • 上一篇下一篇

OFDM无源光网络中多业务分层带宽分配算法

刘业君,刘玉莹,汉鹏超,王继东,郭磊

东北大学计算机科学与工程学院智慧系统国际合作联合实验室，辽宁沈阳 110819

修回日期:2018-08-20 出版日期:2018-09-01 发布日期:2018-10-19
作者简介:刘业君（1986-），男，辽宁丹东人，博士，东北大学副教授，主要研究方向为下一代光接入网、无线光融合通信与网络。|刘玉莹（1993-），女，黑龙江哈尔滨人，东北大学硕士生，主要研究方向为 OFDM无源光网络。|汉鹏超（1992-），女，黑龙江齐齐哈尔人，东北大学博士生，主要研究方向为下一代光接入网、网络虚拟化等。|王继东（1992-），男，辽宁沈阳人，东北大学硕士生，主要研究方向为OFDM无源光网络。|郭磊（1980-），男，四川眉山人，博士，东北大学教授，主要研究方向为光通信与网络、无线通信等。
基金资助:
国家自然科学基金资助项目(61471109);国家自然科学基金资助项目(61501104)

Layered bandwidth allocation algorithm for multi-service in orthogonal frequency division multiplexing passive optical network

Yejun LIU,Yuying LIU,Pengchao HAN,Jidong WANG,Lei GUO

International Cooperation Laborary of Intelligent System School of Computer Science and Engineering,Northeastern University,Shenyang 110819,China

Revised:2018-08-20 Online:2018-09-01 Published:2018-10-19
Supported by:
The National Natural Science Foundation of China(61471109);The National Natural Science Foundation of China(61501104)

摘要/Abstract

摘要：

正交频分复用无源光网络(OFDM-PON，orthogonal frequency division multiplexing passive optical network)具有带宽容量大、资源分配灵活等优势，被公认为下一代光接入网的重要候选技术之一。目前，OFDM-PON 系统结构的相关研究层出不穷，然而这些研究大多专注于物理结构和信号传输技术，缺少与新型系统结构相适应的带宽分配算法。OFDM-PON 中带宽分配涉及时域、频域、比特等多维资源的联合优化，是保证多业务接入和服务质量的关键技术。针对 OFDM-PON 的增强型系统结构，提出多业务分层带宽分配算法，以实现增强型OFDM-PON系统带宽资源的高效利用。仿真结果表明，相比传统OFDM-PON系统中无分层带宽分配算法，增强型OFDM-PON的分层带宽分配算法在带宽资源利用率和数据分组时延等性能方面具有明显优势。

关键词: 正交频分复用无源光网络, 动态带宽分配, 分层带宽分配, 多业务传输

Abstract:

Due to the superiority in large bandwidth capacity and flexible resource allocation,orthogonal frequency division multiplexing passive optical network (OFDM-PON) has been recognized as one of the promising candidates for the next generation PON.There are many research works on the system architecture design of OFDM-PON.However,most of these works focused on the techniques of physical structure and signal transmission and less addressed the bandwidth allocation algorithms supporting the new types of system architecture.The bandwidth allocation in OFDM-PON,which is one of the key techniques to enable the access of multi-service,refers to the joint optimization of multi-dimensional resources in time domain,frequency domain and bits.A layered bandwidth allocation algorithm was proposed for multi-service in the enhanced system architecture of OFDM-PON,aiming at the efficient bandwidth resource utilization.Simulation results prove that the proposed bandwidth allocation algorithm outperforms the conventional algorithms without layered transmission significantly in terms of resource utilization and packet delay.

Key words: OFDM-PON, dynamic bandwidth allocation, layered bandwidth allocation, multi-service transmission

中图分类号:

TP302

刘业君,刘玉莹,汉鹏超,王继东,郭磊. OFDM无源光网络中多业务分层带宽分配算法[J]. 通信学报, 2018, 39(9): 84-93.

Yejun LIU,Yuying LIU,Pengchao HAN,Jidong WANG,Lei GUO. Layered bandwidth allocation algorithm for multi-service in orthogonal frequency division multiplexing passive optical network[J]. Journal on Communications, 2018, 39(9): 84-93.

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参考文献 12

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频谱效率/(bit·(s·Hz)^-1)	分层调制级数	信号扩展因子	节省光功率/dB	节省电功率/dB
0.5	2,4	2.2,-2.4	2.6	0.4
1.5	16,8,4	-1.8,1.4,5	1.5	3.5
2.5	64,64,16	-0.9,-0.7,5.3	0.75	3

参数	数值
保护间隔长度/μs	1
有效子载波数量	512
gate,report分组大小/byte	64
EF,AF,BE数据分组大小/byte	300,400,500

OFDM无源光网络中多业务分层带宽分配算法

Layered bandwidth allocation algorithm for multi-service in orthogonal frequency division multiplexing passive optical network

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