VAR综合多业务光传输交换系统的设计
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摘要
为了实现大规模高质量监控,顺应视频监控数字化、网络化、业务多样化、功能集成化和结构模块化等多方面的趋势,由杭州中威电子技术有限公司提出了“VAR综合多业务光传输交换网络平台系统”,该系统的一项关键技术是实时数据的高质量任意交换。而本论文正是以该系统平台为背景,负责交换子系统的研究设计。论文研究了当前高速交换系统的各项关键技术,结合该系统背景要求设计了交换子板的实现方案。
本文主要工作:
1)、分析了全局共享存储器交换结构以及并行交换系统的优缺点,结合两者的优点本文设计了一种面对四个输出端口的局部共享存储器交换结构,降低了调度的复杂性,又能利用并行结构高速率的特点。
2)、研究了单个局部共享存储器内部存储器结构设计及存储空间的分配技术,结合VAR数据包特点以及硬件的资源结构特点,本文采用了低位交叉存取技术设计出能工作于流水线方式的高速存储结构。
3)、输出调度算法中包括端口的选择和内部优先级的选择,本设计中采用了普通循环调度算法加上带有权重的调度算法来实现输出调度,在保证实时数据的服务质量同时,又不失公平性。
4)、完成了交换板卡的硬件原理设计,设计了交换子系统的功能结构框图,并以一个子存储模块为例,描述了数据以及信令信号的流程,分别给出了该流程中所涉及的各个功能模块的主要VHDL实现代码功能仿真。
For the purpose of realizing large-scale and high quality monitoring, conforming to the monitoring system trend of digitization, service diversification, function integration, and modularization, OB telecom Ltd. put forward a new system which named "VAR multi-services optical transmission and switching integrated network", one of the key technology is high quality switching for real time data. Based on the VAR platform, the author studied various key technologies of current high speed switch system, and realized the design method.
The main works of this paper:
Firstly, characteristic of overall share memory structure and the parallel structure are studied, a new method of partly share memory structure which partake four output ports is carried out. This method have reduced the complexity of system and speeded up the process.
Secondly, structure design and space assignment technologies of memory are studied in one sub-part share memory, and then based on the characteristics of VAR data frame and the hardware resource structure, lower interleaved technology is adopted in the high speed memory design, which can work in production line way.
Thirdly, Output Queuing scheduler algorithm includes the output port selection and priority selection. Ordinary Round Robin and Weighted Round Robin algorithm are put forward to guarantee the service quality of real time data and the equality at the same time.
Finally, hardware scheme and function block diagram design of the switching card are realized. During the description of signal flow, VHDL realization and simulations of every related function module are provided.
本文主要工作:
1)、分析了全局共享存储器交换结构以及并行交换系统的优缺点,结合两者的优点本文设计了一种面对四个输出端口的局部共享存储器交换结构,降低了调度的复杂性,又能利用并行结构高速率的特点。
2)、研究了单个局部共享存储器内部存储器结构设计及存储空间的分配技术,结合VAR数据包特点以及硬件的资源结构特点,本文采用了低位交叉存取技术设计出能工作于流水线方式的高速存储结构。
3)、输出调度算法中包括端口的选择和内部优先级的选择,本设计中采用了普通循环调度算法加上带有权重的调度算法来实现输出调度,在保证实时数据的服务质量同时,又不失公平性。
4)、完成了交换板卡的硬件原理设计,设计了交换子系统的功能结构框图,并以一个子存储模块为例,描述了数据以及信令信号的流程,分别给出了该流程中所涉及的各个功能模块的主要VHDL实现代码功能仿真。
For the purpose of realizing large-scale and high quality monitoring, conforming to the monitoring system trend of digitization, service diversification, function integration, and modularization, OB telecom Ltd. put forward a new system which named "VAR multi-services optical transmission and switching integrated network", one of the key technology is high quality switching for real time data. Based on the VAR platform, the author studied various key technologies of current high speed switch system, and realized the design method.
The main works of this paper:
Firstly, characteristic of overall share memory structure and the parallel structure are studied, a new method of partly share memory structure which partake four output ports is carried out. This method have reduced the complexity of system and speeded up the process.
Secondly, structure design and space assignment technologies of memory are studied in one sub-part share memory, and then based on the characteristics of VAR data frame and the hardware resource structure, lower interleaved technology is adopted in the high speed memory design, which can work in production line way.
Thirdly, Output Queuing scheduler algorithm includes the output port selection and priority selection. Ordinary Round Robin and Weighted Round Robin algorithm are put forward to guarantee the service quality of real time data and the equality at the same time.
Finally, hardware scheme and function block diagram design of the switching card are realized. During the description of signal flow, VHDL realization and simulations of every related function module are provided.
引文
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[9]S.T.Chuang.Matching output queuing with a combined input output queued switch[A].IEEE J.Select.Areas Common.[C].1999.1030-1039
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[12]LiS.Y.Theory of periodic contention and its application to packet switching[A].Proc.Of INFOCOM[C].1988.320-325
[13]T.E.Anderson,S.Owicki.High speed switch scheduling for local area networks [A].ACM trans.Computer Systems[C].1993.319-352
[14]陈金山.ATM交换结构[J].解放军理工大学学报,2000,1(1):25-27.
[15]刘尉悦.高性能交换技术的研究[A].中国科学技术大学博士学位论文[C].2001年.29-32
[16]胡明昌.史岗.高性能分组交换机内部体系结构综述[J].计算机工程与应用,2003,14:86-89.
[17]JonathanS.Turner.Multi-rate Clos Networks[A],IEEE Communications Magazine[C].October 2003.38-45
[18]A.Singhaletal.,Gigaplane(TM).A High Performance Bus for Large SMPS[A].Proc.of Hot Interconnects[C].96.Stanford.CA
铩颷19]R.O.LaMaire,D.N.Serpanos.Two-dimensional round-robin schedulers for packetQuery =
CADORecordset Error
Code = 80040e31
Code meaning = IDispatch error #3121
Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
switches with multiple input queues[A].IEEE/ACM Transactions onQuery =
CADORecordset Error
Code = 80040e31
Code meaning = IDispatch error #3121
Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
Networking[C].Oct.1994.5(2).471-482Query =
CADORecordset Error
Code = 80040e31
Code meaning = IDispatch error #3121
Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
[20]C.Lund,S.Phillips,N.Reingold.Fair prioritized scheduling in an input-bufferedQuery =
CADORecordset Error
Code = 80040e31
Code meaning = IDispatch error #3121
Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
switch[A].Proceedings of the IFIP-IEEE Conf.on BroadbandQuery =
CADORecordset Error
Code = 80040e31
Code meaning = IDispatch error #3121
Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
Communications'96[C].Montreal,Apr.1996.358-369Query =
CADORecordset Error
Code = 80040e31
Code meaning = IDispatch error #3121
Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
[21]J.Hui,E.Arthurs.A broadband packet switch for integrated transport[A]IEEEQuery =
CADORecordset Error
Code = 80040e31
Code meaning = IDispatch error #3121
Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
J.Selected Areas Communications[C].Oct.1987.1264-1273Query =
CADORecordset Error
Code = 80040e31
Code meaning = IDispatch error #3121
Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
[22]M.Ali,H.Nguyen.A neural network implementation of an input access scheme inQuery =
CADORecordset Error
Code = 80040e31
Code meaning = IDispatch error #3121
Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
a high-speed packet switch[A].Proc.of GLOBECOM[C].1989.1192-1196Query =
CADORecordset Error
Code = 80040e31
Code meaning = IDispatch error #3121
Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
[23]Cyriel Minkenberg,Ton Engbersen.A Combined Input and Output QueuedQuery =
CADORecordset Error
Code = 80040e31
Code meaning = IDispatch error #3121
Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
Packet Switched System Based on PRIZMA Switch-on-a-Chip Technology[A].Query =
CADORecordset Error
Code = 80040e31
Code meaning = IDispatch error #3121
Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
IEEE Communications Magazine[C].December2000Query =
CADORecordset Error
Code = 80040e31
Code meaning = IDispatch error #3121
Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
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Code = 80040e31
Code meaning = IDispatch error #3121
Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
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CADORecordset Error
Code = 80040e31
Code meaning = IDispatch error #3121
Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
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CADORecordset Error
Code = 80040e31
Code meaning = IDispatch error #3121
Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
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Code = 80040e31
Code meaning = IDispatch error #3121
Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
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CADORecordset Error
Code = 80040e31
Code meaning = IDispatch error #3121
Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
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Code = 80040e31
Code meaning = IDispatch error #3121
Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
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CADORecordset Error
Code = 80040e31
Code meaning = IDispatch error #3121
Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
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CADORecordset Error
Code = 80040e31
Code meaning = IDispatch error #3121
Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
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CADORecordset Error
Code = 80040e31
Code meaning = IDispatch error #3121
Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
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Code = 80040e31
Code meaning = IDispatch error #3121
Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
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Code = 80040e31
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Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
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Code = 80040e31
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Source = Microsoft OLE DB Provider for SQL Server
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Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
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Code = 80040e31
Code meaning = IDispatch error #3121
Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
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Code meaning = IDispatch error #3121
Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
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Code = 80040e31
Code meaning = IDispatch error #3121
Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
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Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
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Code = 80040e31
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Source = Microsoft OLE DB Provider for SQL Server
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Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
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Code = 80040e31
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Source = Microsoft OLE DB Provider for SQL Server
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Source = Microsoft OLE DB Provider for SQL Server
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Code = 80040e31
Code meaning = IDispatch error #3121
Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
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Code = 80040e31
Code meaning = IDispatch error #3121
Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
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CADORecordset Error
Code = 80040e31
Code meaning = IDispatch error #3121
Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
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Code = 80040e31
Code meaning = IDispatch error #3121
Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
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CADORecordset Error
Code = 80040e31
Code meaning = IDispatch error #3121
Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
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Code = 80040e31
Code meaning = IDispatch error #3121
Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
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Code = 80040e31
Code meaning = IDispatch error #3121
Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
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CADORecordset Error
Code = 80040e31
Code meaning = IDispatch error #3121
Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
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CADORecordset Error
Code = 80040e31
Code meaning = IDispatch error #3121
Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
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Code = 80040e31
Code meaning = IDispatch error #3121
Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
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Code = 80040e31
Code meaning = IDispatch error #3121
Source = Microsoft OLE DB Provider for SQL Server
Description = 超时已过期
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