CN112260793A - Power equipment based on OTN technology application - Google Patents
Power equipment based on OTN technology application Download PDFInfo
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- CN112260793A CN112260793A CN202011130747.0A CN202011130747A CN112260793A CN 112260793 A CN112260793 A CN 112260793A CN 202011130747 A CN202011130747 A CN 202011130747A CN 112260793 A CN112260793 A CN 112260793A
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- 230000003287 optical effect Effects 0.000 claims abstract description 45
- 238000012545 processing Methods 0.000 claims abstract description 26
- 230000006855 networking Effects 0.000 claims abstract description 25
- 230000005693 optoelectronics Effects 0.000 claims abstract description 13
- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 230000006978 adaptation Effects 0.000 claims abstract description 7
- 238000003032 molecular docking Methods 0.000 claims abstract description 7
- 238000011084 recovery Methods 0.000 claims abstract description 5
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
- H04J14/0254—Optical medium access
- H04J14/0267—Optical signaling or routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0005—Switch and router aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/0073—Provisions for forwarding or routing, e.g. lookup tables
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/009—Topology aspects
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Abstract
本发明公开了一种基于OTN技术应用电力设备，其特征在于，包括光电交叉设备，所述光电交叉设备包括光交叉设备模块、电交叉设备模块以及复用模块，其还包括有光传输段处理功能模块、光复用段处理功能模块、线路接口处理功能模块以及Och交叉功能模块和ODUk交叉功能模块，所述线路接口处理功能模块还连接有接口适配处理功能模块以及数据对接接口，用于在光层和电层进行交叉连接和业务分插复用，包括链形组网、环形组网和Mesh组网三种组网类型，其典型拓扑结构包括核心网、汇聚网、接入网三层构造，所述的核心网物理上采用Mesh组网结构构建，在网络恢复策略上采用基于ROADM的共享保护环方式，所述的汇聚网和接入网采用环形结构构建。
The invention discloses an application power equipment based on OTN technology, which is characterized in that it includes an optoelectronic crossover device, the optoelectronic crossover device includes an optical crossover device module, an electrical crossover device module and a multiplexing module, and further includes an optical transmission section processing A functional module, an optical multiplexing section processing functional module, a line interface processing functional module, an Och crossover functional module and an ODUk crossover functional module, the line interface processing functional module is further connected with an interface adaptation processing functional module and a data docking interface for use in The optical layer and the electrical layer perform cross-connection and service add-drop multiplexing, including three networking types: chain networking, ring networking, and mesh networking. The typical topology includes three layers of core network, aggregation network, and access network. Structure, the core network is physically constructed using a Mesh networking structure, the ROADM-based shared protection ring mode is used in the network recovery strategy, and the aggregation network and the access network are constructed using a ring structure.
Description
Technical Field
The invention relates to the technical field of network communication, in particular to an electric power device based on OTN technology application.
Background
Optical transport networks have been advancing toward high capacity, high speed, multi-service, and intelligence as a whole for the development of information communication networks and operators. For a long time, the basic forms of optical transmission networks are SDH and WDM, which are widely used, whereas SDH mainly implements networking and management of 2M/155M services, and WDM mainly implements point-to-point large-capacity transmission, which has disadvantages of low encapsulation efficiency and protection mode of large-granule packet services, weak service scheduling capability, and poor networking capability.
An Optical Transport Network (OTN) is a transport network based on wavelength division multiplexing technology and organized in an optical layer, and is a new generation of "digital transport system" and "optical transport system" specified by a series of ITU-T recommendations such as g.872, g.709, and g.798, and is a next generation backbone transport network.
Disclosure of Invention
In view of the above, the present invention provides an electric device based on OTN technology, which is compatible with the advantages of traditional SDH and WDM in terms of service capability, so that service construction based on OTN technology is more flexible.
The technical scheme adopted by the invention is as follows: an electric power equipment based on OTN technique application which characterized in that: the optical layer OTN topological structure comprises three types, namely chain networking, ring networking and Mesh networking, and a typical topological structure comprises three layers of structures, namely a core network, a convergence network and an access network, wherein the core network physically adopts a Mesh networking structure, a network recovery strategy adopts a ROADM-based shared protection ring mode, and the convergence network and the access network are constructed by adopting ring structures; the photoelectric cross device module comprises an optical transmission section processing function module, an optical multiplexing section processing function module connected with the optical transmission section processing function module, a line interface processing function module, an Och cross function module of an optical channel layer and an ODUk cross function module used for an optical channel data unit, wherein the line interface processing function module is further connected with an interface adaptation processing function module, and the interface adaptation processing function module is used for connecting a data docking interface.
As a further configuration of the above scheme, the data docking interface includes an ethernet interface, an STM-N interface, and an OTUK interface.
As a further configuration of the above scheme, the optoelectronic cross device satisfies 50ms of protection switching time, and the dual scheduling of wavelength and time slot thereof further realizes clear service arrangement.
As a further arrangement of the above scheme, the optical-electrical cross device provides multiple service interfaces by using a single fiber core through OTN dense wavelength division.
As a further configuration of the above scheme, the optical add/drop multiplexer further includes a terminal multiplexing module, which is used for performing OTN standardization on a wavelength division or reconfigurable optical add/drop multiplexer ROADM interface, and fusing the wavelength division device and the OTN interface.
As a further configuration of the above scheme, the optoelectronic cross device further includes an intelligent routing function module, which performs an intelligent routing strategy based on a DDELB algorithm, and reduces time delay and jitter by defining and controlling a service selection connection single-hop routing by service class classification.
The invention has the advantages that compared with the existing optical transport network, the OTN technology-based application power equipment meets the requirement of the communication network development in the current stage based on the OTN technology, the cross connection and service add-drop multiplexing functions of ODUk bit particles of an electrical layer are supported by the terminal multiplexing functions of the equipment in an electrical layer structure and an optical layer, the functions of a photovoltaic multiplexing section and an optical transmission section are realized, the network configuration and management hierarchy are simplified by adopting a three-layer networking structure in combination with the operation characteristics of the power communication network, an intelligent selection strategy is also carried out by a DDELB algorithm, and the use experience is improved by the service level hierarchical definition control.
Drawings
FIG. 1 is a functional architecture diagram of an optoelectronic cross-point device according to the present invention;
fig. 2 is a schematic diagram of a typical topology structure of the OTN technology of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflicting with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described and thus the scope of the present invention is not limited by the specific embodiments disclosed below.
An electric power device based on OTN technology application as shown in fig. 1-2 is characterized in that: the optical layer OTN topological structure comprises three types, namely chain networking, ring networking and Mesh networking, and a typical topological structure comprises three layers of structures, namely a core network, a convergence network and an access network, wherein the core network physically adopts a Mesh networking structure, a network recovery strategy adopts a ROADM-based shared protection ring mode, and the convergence network and the access network are constructed by adopting ring structures;
the photoelectric cross device module comprises an optical transmission section processing function module, an optical multiplexing section processing function module connected with the optical transmission section processing function module, a line interface processing function module, an Och cross function module of an optical channel layer and an ODUk cross function module used for an optical channel data unit, wherein the line interface processing function module is further connected with an interface adaptation processing function module, and the interface adaptation processing function module is used for connecting a data docking interface.
As a further configuration of the above scheme, the data docking interface includes an ethernet interface, an STM-N interface, and an OTUK interface.
As a further configuration of the above scheme, the optoelectronic cross device satisfies 50ms of protection switching time, and the dual scheduling of wavelength and time slot thereof further realizes clear service arrangement.
As a further arrangement of the above scheme, the optical-electrical cross device provides multiple service interfaces by using a single fiber core through OTN dense wavelength division.
As a further configuration of the above scheme, the optical add/drop multiplexer further includes a terminal multiplexing module, which is used for performing OTN standardization on a wavelength division or reconfigurable optical add/drop multiplexer ROADM interface, and fusing the wavelength division device and the OTN interface.
As a further configuration of the above scheme, the optoelectronic cross device further includes an intelligent routing function module, which performs an intelligent routing strategy based on a DDELB algorithm, and reduces time delay and jitter by defining and controlling a service selection connection single-hop routing by service class classification.
The OTN technology-based application power equipment meets the requirement of communication network development in the current stage based on the OTN technology, and realizes the functions of a photovoltaic multiplexing section and an optical transmission section by the terminal multiplexing function of the equipment at an electrical layer structure and an optical layer and supporting the cross connection and service add-drop multiplexing functions of ODUk bit particles of the electrical layer, and simplifies network configuration and management levels by adopting a three-layer networking structure in combination with the operation characteristics of a power communication network.
The optical terminal multiplexer OTM performs OTN standardization on a wave or a reconfigurable optical add-drop multiplexer ROADM interface, merges wavelength division equipment in the OTN interface, and a wavelength division system is based on the standardized OTN interface, and uses frame overhead to realize end-to-end line cooling and fault monitoring of a wavelength channel, and provides a standard inter-domain OTU interworking interface on a line side, and an optical layer and an electrical layer terminal OTN are accessed to the OTM equipment, and a basic network of an optical layer and an electrical layer is realized by combining an electrical cross over device OTH and an optical cross over device ROADM, so as to realize cross connection of ODUk cross particles and wavelength cross particles and an attendant add-drop multiplexing function, and realize functions of the OTH equipment and the ROADM equipment, and a schematic diagram of an equipment function model thereof is shown in fig.
The DDELB algorithm overcomes the defect that the network performance is reduced due to the fact that an existing OTN routing mechanism excessively depends on rate information between node pairs, meanwhile, the service quality requirements of different services are considered, ideas are provided for intellectualization of service routing in an electric power communication optical network, compared with the prior art, the routing mechanism of the scheme has more obvious advantages in the aspect of reducing the call loss rate of high service level connection requests, the service level classification definition is used for controlling the service to select and connect a single-hop route to reduce time delay and jitter of the single-hop route, the application of the OTN algorithm is superior, and the network can reasonably arrange more connection requests to operate on other single-hop routes.
Fig. 2 shows an architecture diagram of a typical topology networking of OTN devices, which comprehensively considers various factors such as the layer of a network to which the OTN devices are applied, service transmission requirements, and actual networking cost in the actual application of power communication network services, and is constructed in a three-layer networking structure manner, where a core network of the architecture diagram is mainly used to solve service particles of sub-wavelength ODUk units, and to solve the problem of small capacity of current electrical cross devices, data services of an access layer and a convergence layer are transmitted in the form of various standard interfaces, and user-by-user and service-by-service control management are performed, and finally, point-to-point control and transmission are performed in a data network, so as to achieve the purpose of simplifying management levels of network configuration, and OTN, as a brand-new optical transport network technology, inherits numerous advantages of a conventional network, namely, an optimal choice for upgrading and transforming a power communication network, and combines an intelligent routing algorithm to enable a bearer of a large granule I P service of, The scheduling and management capabilities are improved by using an OTN networking, the network level is simplified, the utilization rate of optical cable resources is improved, the OTN realizes the effects of rapid service recovery and convenient circuit scheduling, and meets the development requirements of power communication.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
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| CN202011130747.0A CN112260793A (en) | 2020-10-21 | 2020-10-21 | Power equipment based on OTN technology application |
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| CN210444274U (en) * | 2019-09-30 | 2020-05-01 | 国家电网有限公司 | Backbone transmission network system |
-
2020
- 2020-10-21 CN CN202011130747.0A patent/CN112260793A/en active Pending
Patent Citations (5)
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|---|---|---|---|---|
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| US20160080342A1 (en) * | 2014-09-15 | 2016-03-17 | Ciena Corporation | Secure access systems and methods to network elements operating in a network |
| US20170324504A1 (en) * | 2015-03-06 | 2017-11-09 | Tellabs Operations, Inc. | Method and Apparatus for Improving Connectivity Between Optical Devices Using Software Defined Networking |
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| Title |
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