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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- 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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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
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Abstract
The invention discloses an electric power device for application based on OTN technology, which is characterized by comprising an optical-electrical cross device, wherein the optical-electrical cross device comprises an optical cross device module, an electrical cross device module and a multiplexing module, and further comprises an optical transmission section processing function module, an optical multiplexing section processing function module, a line interface processing function module, an Och cross function module and an ODUk cross function module, wherein the line interface processing function module is also connected with an interface adaptation processing function module and a data docking interface, is used for performing cross connection and service add-drop multiplexing on an optical layer and an electrical layer, and comprises three networking types of chain networking, ring networking and Mesh networking, a typical topological structure of the electric power device comprises a core network, a convergence network and an access network, the core network is physically constructed by adopting a Mesh networking structure, and a network recovery strategy is constructed by adopting a ROADM-based shared protection ring mode, the convergence network and the access network are constructed by adopting an annular 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.
Claims (6)
1. An electric power equipment based on OTN technique application which characterized in that: the photoelectric cross device comprises a photoelectric cross device module, an electric cross device module and a multiplexing module, wherein the photoelectric cross device is used for performing cross connection and service add-drop multiplexing on an optical layer and an electric layer and comprises three types of chain networking, ring networking and Mesh networking, a typical topological structure of the photoelectric cross device comprises a three-layer structure of a core network, a convergence network and an access network, the core network is constructed by adopting a Mesh networking structure from a physical structure, a ROADM-based shared protection ring mode is adopted on a network recovery strategy, and the convergence network and the access network are constructed by adopting a ring structure; the optical multiplexing device 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 path data unit, wherein the line interface processing function module is also connected with an interface adaptation processing function module, and the interface adaptation processing function module is used for connecting a data docking interface.
2. An electric power equipment based on OTN technology application according to claim 1 characterized in that: the data docking interface comprises an Ethernet interface, an STM-N interface and an OTUK interface.
3. An electric power equipment based on OTN technology application according to claim 1 characterized in that: the photoelectric cross device meets the protection switching time of 50ms, and the dual scheduling of the wavelength and the time slot further realizes the clear service arrangement.
4. An electric power equipment based on OTN technology application according to claim 1 characterized in that: the photoelectric cross device provides various service interfaces by adopting a single fiber core through OTN dense wavelength division.
5. An electric power equipment based on OTN technology application according to claim 1 characterized in that: the optical add-drop multiplexer (ROADM) interface is used for OTN standardization, and wavelength division equipment and the OTN interface are fused.
6. An electric power equipment based on OTN technology application according to claim 1 characterized in that: the photoelectric crossing equipment also comprises an intelligent routing function module which carries out an intelligent routing strategy based on a DDELB algorithm and reduces time delay and jitter of the photoelectric crossing equipment by controlling service selection connection single-hop routing through service grade classification definition.
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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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| CN202011130747.0A CN112260793A (en) | 2020-10-21 | 2020-10-21 | Power equipment based on OTN technology application |
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2020
- 2020-10-21 CN CN202011130747.0A patent/CN112260793A/en active Pending
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| CN101145857A (en) * | 2007-09-14 | 2008-03-19 | 中兴通讯股份有限公司 | A service convergence system for saving core router port |
| 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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Application publication date: 20210122 |