JP2018022963A - Communication device, design method, and communication program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide means for making the most use of components in an enclosure of a device as components of another device.SOLUTION: A communication device includes: components included in a device for communicating information with the outside of the device; and paths provided inside the device and enabling interaction of information with the outside of the device as an independent device or components inside the communication device from the outside of the device for the components or from the components for the outside of the device.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a communication device, a design method, and a communication program.

As a communication system including a communication device, for example, there is a PON (Passive Optical Network) system. The PON system includes an ONU (Optical Network Unit) installed in a customer's premises and the like, and an OLT (Optical Line Terminal: optical subscriber line terminal device) that is a communication device installed in a building. ) And an optical fiber network that connects the two (see Non-Patent Document 1).
In a communication device, a function having low dependency on at least one of the device conformance standard, generation, method, system, device type, and manufacturing vendor is made into a component, and an application programming interface (API: Application Programming Interface) of the function is entered. By clarifying at least a part of the output interface (IF: Interface) and improving versatility, portability, and expandability, between devices with different standards, generations, systems, systems, device types, and manufacturing vendors Can be easily shared and unique functions can be added (see Non-Patent Document 2).

ITU-T Recommendation G.989.1 40-Gigabit-capable passive optical networks (NG-PON2), 2013 “FASA”, [online], NTT, [searched July 28, 2016], Internet <http://www.ansl.ntt.co.jp/j/FASA/index.html>

  When converting functions into parts, the parts are not necessarily located in the same casing, but may be distributed in a plurality of casings. On the contrary, the parts in the casing may be used as parts constituting other devices. However, there is a problem in that a component in a casing of a certain device cannot be used as a component of another device.

  In view of the above circumstances, an object of the present invention is to provide a technique capable of providing means for utilizing a component in a casing of a certain device as a component of another device.

  One embodiment of the present invention includes a component that constitutes a device and transmits / receives information to / from the outside of the device, and a device that is provided inside the device and that is independent of the component from the outside of the device or from the component to the outside of the device. And a path that enables information to be exchanged with the outside of the apparatus as a component inside the apparatus.

  One aspect of the present invention is the above-described communication device, which transmits information on a component that transmits and receives the information from outside the device or to the outside of the device, or information on other components from or outside the device. The proxy part which interrupts | blocks is further provided.

  One aspect of the present invention is the above-described communication device, which is unique outside the device such as an identifier or a path or a combination thereof that can specify a component that exchanges information with the outside of the device or outside the device, or within a network including the device. The provision part which provides the identification information of is further provided.

  One aspect of the present invention is the above-described communication device, which is identification information unique to the outside of the device such as an identifier, a path, or a combination thereof that can identify a component that exchanges information with the outside of the device or within a network including the device And a conversion unit for converting the identification information of the component so as to be unique identification information outside the apparatus or in the network including the apparatus.

  One aspect of the present invention is a method for designing a communication device having a componentized function. The communication device includes a component that configures the device and exchanges information with the outside of the device, and is provided inside the device. Or a path that allows information to be exchanged with the outside of the device as an independent device from the component to the outside of the device, or as a component inside the device itself.

  One embodiment of the present invention is a program for causing a computer to function as each functional unit included in the communication device according to the present invention.

  According to the present invention, it is possible to provide means for utilizing a component in a casing of a certain device as a component of another device.

It is a basic lineblock diagram of a communication apparatus. It is a figure which shows the example of a communication apparatus. It is a figure which shows the 1st example of the architecture of a communication apparatus. It is a figure which shows the 2nd example of the architecture of a communication apparatus. It is a figure which shows the 3rd example of the architecture of a communication apparatus. It is a figure which shows the 4th example of the architecture of a communication apparatus. It is a figure which shows another example of an architecture. 3 is a diagram illustrating an example of a configuration of a communication device and an external server 16. FIG. It is a figure which shows the structure of OLT. It is a figure which shows the flow of the signal / information between the function parts in a communication apparatus. It is a figure which shows the example of a function structure which the PON main signal processing function part 300 has. It is a figure which shows the example of a function structure which the PON access control function part 320 has. It is a figure which shows the example of a function structure which L2 main signal processing function part 340 has. It is a figure which shows the 1st example of a function structure which the maintenance operation function part 330 has. It is a figure which shows the 2nd example of a structure of the function which the maintenance operation function part 330 has. It is a figure which shows the 3rd example of a function structure which the maintenance operation function part 330 has. It is a figure which shows the example of a function structure which the PON multicast function part 350 has. It is a figure which shows the example of a function structure which the power saving control function part 360 has. It is a figure which shows the example of a function structure which the frequency and time synchronous function part 370 has. It is a figure which shows the example of a function structure which the protection function part 380 has.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
(Embodiment 1)
The communication device is a device that executes communication with another communication device by a signal such as an optical signal passing through a communication network such as an optical fiber network such as PON. The communication device is, for example, an OLT. The communication device may be, for example, an OSU (Optical Subscriber Unit). The communication device may be, for example, a combination of an OLT that includes or does not include a switch unit (SW) that switches an optical signal and another switch unit (SW). The communication device may be a combination of OLT and ONU, for example. The communication device may include a plurality of devices.

  The exchange between the components is via middleware described later, but a communication apparatus's own transfer path and means may be used, and OPENFLOW, NETCONF / YANG, SNMP (Simple Network Management Protocol), etc. are standardized. Other means may be used. Moreover, any of routes such as internal wiring, backboard, OAM unit, main signal line, dedicated wiring, operation system, controller or control panel (Cont panel) may be used. When the exchange is directly terminated and input, it may be encapsulated in an OAM unit or a main signal. The exchange may be terminated at any point and input via a route such as an internal wiring, backboard, OAM unit, main signal line, dedicated wiring, operation system, controller, or control panel. When using an OAM part or a main signal line, it is desirable to encapsulate the OAM part or main signal line. When the main signal line is passed, it is desirable to distribute it by the OSU or the switch part at another location.

  Next, as an example, the operation and the like are illustrated on the premise of the PON-OLT conforming to the ITU-T recommendation, such as a TWDM (Time and Wavelength Division Multiplex) -PON system. Here, although TWDM-PON is used, the PON may be a PON other than the TWDM-PON compliant with the ITU-T recommendation. For example, the PON may be a PON conforming to an IEEE standard such as GE (Gigabit Ethernet (registered trademark))-PON, 10GE-PON, or the like. A TC (Transmission Convergence) layer and a PMD (Physical Medium Dependent) layer are the same if they are read as corresponding layers in the standard.

  The communication apparatus includes hardware or software, or a combination of them or a componentized function. For example, an application (for example, a FASA application) that is a software component realized by using a generalized input / output interface (for example, a FASA application API) that has different functions or the like for each service or communication carrier, and a general purpose for the application It is composed of basic components (for example, FASA infrastructure) of an access network device that provides functions that do not need to be changed according to services and requests, for example, because the standardized I / O interface is provided. May be. This will be specifically described below.

(Means 1-1, external connection)
As shown in FIG. 1, the communication device receives information about the component as an independent device or a component within the device itself from the outside of the device with respect to the component constituting the device or from the component constituting the device to the outside of the device ( Control information, performance information, alarm information, main signal, etc.) are provided.
Here, as an independent device or a component inside the own device, it means that the component is designated from the outside of the device and control information, performance information, a main signal and the like are exchanged.
For example, when the information is control information, the component is controlled from the outside of the apparatus, the outside of the apparatus is controlled, or a combination thereof. The route may be a route used in common for a plurality of corresponding parts as shown in the upper diagram of the means 1-1, or a specific part may be used as shown in the lower figure of the means 1-1. A route used alone or a combination thereof may be used. Further, there may be a plurality of proxy units and paths for each type of control signal, performance information, alarm information, main signal, and the like. In FIG. 1, a double line means an information path, and an arrow means information exchange. Sharing routes has the effect of reducing the number of routes, and when used alone, it has the effect of identifying components by the route, and the effect of reducing delay and lack of bandwidth due to contention between the sharing components. The same applies to the configuration described later.

  In addition, the path may be connected to an independent device or a component that does not exchange information as a component inside the device itself. In that case, it is desirable that the path or parts or the part between them block the transmission of information relating to those parts. For example, the communication device is a component that constitutes the device, and is provided outside the device with a path for exchanging control information with the component that is controlled outside / controls the outside of the device. The component is provided with means for exchanging control information. Specifically, in the means 1-1, the communication apparatus is controlled outside the apparatus, for example, by using the signal line used for controlling the apparatus, for example, the signal information of the common signal line as it is or at least using the components constituting the apparatus. There is provided a path for communicating information including information on components for controlling the outside of the apparatus to the inside and outside of the apparatus. In FIG. 1, a route for exchanging information other than the device other than the corresponding component is shown, but it may not be necessary. The same applies to the configuration described later.

(Means 1-2, external connection)
It is a modification of the means 1-1, in which the communication device is provided with a proxy unit, and information on components that exchange information from outside the device or to the outside of the device is via the proxy unit. It is desirable that the substitution unit transmits information on a component that transmits / receives information to / from the outside of the apparatus or blocks information on other parts from / to the outside of the apparatus. Further, the proxy unit may transfer and receive ACK, which is information transfer confirmation, on behalf of the component. In this case, the processing of the part is simplified. In addition, the substitution unit determines the signal transmission format inside and outside the device, for example, the frame format, the presence / absence of a trailer, the presence / absence of FEC (Forward Error Correction), the presence / absence of encryption in the device, and the device outside the device. It may be an external format.
For example, the communication device includes a component or a functional component that constitutes the device, and includes a unit that performs control information exchange with the outside of the device in a component that is controlled outside the device / controls the outside of the device. Pass control information to / from the part. Specifically, in the means 1-2, the communication device communicates information of at least a component that is substituted by a signal line used for controlling the device, for example, signal information of the common signal line, inside and outside the device via a substitution unit. A route is provided.
In the figure, the substitution part is shown shared by the parts, but it may be another substitution part for each one or a plurality of parts, and exchange of control signals, performance information, alarm information, main signals, etc. There may be a plurality of proxy parts and routes for each type.

(Means 2-1 and identification of control / non-control target from outside)
It is a modification of the means 1-1, and includes the outside of the apparatus such as an identifier, a path (corresponding to the lower side of the structure of the means 1-1 in FIG. Identification information unique in the network is added to the means 1-1.
For example, a communication device is a component that constitutes the device, and is uniquely identified outside the device, such as an identifier, a route, or a combination thereof, within the network that includes the device, or is controlled outside the device. Information is given and the part is uniquely controlled by the identification information. Alternatively, a means for acting as an exchange of control information is provided, and the means for acting delivers control information to the component. The assignment of identification information may be performed by the device itself or outside the device such as the NE controller.
Specifically, in the unit 2-1, the communication device performs an operation such as adding, adding, or multiplying a child number indicating a component in the housing to a rack number or a MAC address related to the housing and using the communication device outside the device. A unique global number or the like is used as unique identification information outside the device or in the network including the device. When the route for each part is used, it is used as identification information such as a global number used outside the apparatus by performing an operation such as adding, adding or multiplying a value related to the route to a rack number or MAC address related to the chassis.

  The identification information only needs to be effectively unique. For example, since it is only necessary to uniquely identify the target component from outside the device or from the network including the device, a setting in which a plurality of components correspond to a single identification information and other than the target component does not exchange information. It will be effectively unique. Such a setting can be used by replacing it with another part without changing the setting outside the apparatus, provided that the parts having the same system function are mutually exclusive parts. In the case of identification by a route, the fact that a plurality of components are single identification information corresponds to a state in which a plurality of components are shared on the same route. The same applies to the configuration described later.

Such a communication apparatus is, for example, the OSU of FIG. The CT (Channel Termination) for each wavelength (λ1, λ2, λ3, λ4) in the OSU is connected to a different SW as an independent component. In other words, the CTs in the real OSU conduct signals as separate virtual OSU components, and the virtual OSU and SW are connected. In such a configuration, if the CT cannot be controlled uniquely from outside the OSU, it is difficult to control each PON. However, in this application, the control is easy because it can be uniquely controlled.
In the figure, a route for exchanging information other than the device other than the corresponding part is described, but it is not necessary.

(Means 2-2, Identification of control / non-control target from outside)
Identification information unique to the outside of the apparatus, such as an identifier, a path (corresponding to the lower side of the structure of the means 1-2 in FIG. 1), or a combination thereof, which is a modification of the means 1-2 and can identify a part that exchanges information with the outside of the apparatus Was added to Means 1-2. The identification information may be given by a granting unit that gives the identification information. If the identification information given by the granting unit is unique outside the device including the component, the granting unit itself, the inside of the device other than the granting unit Any value determined by an external device such as a controller may be used.
In addition to or in addition to the processing of the means 1-2, the proxy unit transmits the identification information of the destination / sender component of the information to be transmitted / received by the component that transmits / receives information to / from the outside. A component that constitutes another device and communicates with an external device as an independent device or a component inside the device itself, at least outside the device that accommodates the component, by converting an identifier, selecting a route, or a combination thereof, The identification information is unique outside and within the network including the device.

  The communication device has information on the parts (control information, performance information, main A route for sending and receiving signals etc. is provided. For example, when the information is control information, the communication device is a component that constitutes the device and is controlled outside the device / a component that controls the outside of the device. Unique identification information is given within the network including the device, the identifier of the component is converted inside and outside the device, a unique identifier is assigned at least inside the device, and outside the device or within the network including the device Means for converting the identifier of the component inside and outside the apparatus so as to provide unique identification information.

Specifically, in the unit 2-2, the communication device performs an operation such as adding, adding, or multiplying a child number indicating a component in the housing to a rack number or a MAC address related to the housing, for example. Used outside the device by performing operations such as adding, adding, or multiplying a value related to the route to the identification information unique to the outside of the device such as the global number used in the network or the network including the device, or the frame number or MAC address related to the chassis The identification number unique to the outside of the device such as the global number or within the network including the device is used as the child number of the part in the housing, for example, inside the housing, the controller such as NeOPS, or other network means. Replace.
In the means 2-2, the communication apparatus, for example, controls a predetermined number outside the chassis or control from all apparatuses with respect to a global number consisting of a child number in the chassis in a rack number or MAC address related to the chassis. And the identification information to which the component itself responds is changed.

(Embodiment 1-1)
Embodiment 1-1 demonstrates the structure of the communication apparatus which comprises the communication system used for TWDM-PON. Hereinafter, the first to sixth examples will be described as examples of the architecture of the communication apparatus. The architecture of the communication device constituting the communication system may be an architecture other than the first to sixth examples described below. For example, the software unit of the communication device in the first to sixth examples of the architecture may be a hardware unit.

(First example of architecture)
FIG. 3 is a diagram illustrating a first example of the architecture of the communication device. In the first example of the architecture, the communication device has a device-dependent unit 110 that depends on a standard or manufacturer that complies with, a middleware 120 that hides the hardware or software differences of the device-dependent unit 110, and an operation that does not depend on the device. And a general-purpose device-independent application 130. Accordingly, the device-dependent unit (vendor-dependent unit) 110 is a functional unit that depends on the standard that the device of the communication apparatus complies with or the manufacturer of the device. In other words, the device-dependent unit 110 is not compatible with other communication devices, and cannot be used as it is for newly manufactured communication devices (particularly, devices with different standards or manufacturing vendors that conform to them). The device dependence unit 110 executes one or more functions provided in the network device.

In addition, the device-independent application 130 is a functional unit that does not depend on a standard that the communication device device conforms to or a device manufacturer. In other words, the device-independent application 130 has a high compatibility with other communication devices, and can be used as it is for a newly manufactured communication device (particularly, a device that conforms to a different standard or manufacturing vendor). Specific examples of applications provided in the device-independent application 130 include an application that performs setting processing in a network device, an application that performs setting change processing, and an application that performs algorithm processing.
The middleware 120 and the device-independent application 130 are connected via the device-independent API 21. The device-independent API 21 is an input / output IF that does not depend on the device.

  The device dependence unit 110 includes, for example, a hardware unit (PHY) 111, a hardware unit (MAC) 112, a software unit 113, and an OAM (Operation Administration and Maintenance) unit 114. The hardware unit (PHY) 111, the hardware unit (MAC) 112, the software unit 113, the OAM unit 114, and the middleware 120 are connected via the device-dependent API 23. The device dependent API 23 is an input / output IF depending on the device. The device dependence unit 110 further includes an NE (NE, Network Element) management / control unit 115. The NE management / control unit 115 and the middleware 120 are connected via a device-dependent API 25.

  What function is the device-dependent unit 110 or the device-independent application 130 is a restriction derived from processing for realizing the middleware 120 or the device-independent application 130, for example, a restriction derived from the processing capability of software. In addition, it may be determined according to the function update frequency, the importance of the extended function, or the like. As a result, the communication device facilitates flexible and quick addition of the extended function unit (unique function unit) by the device-independent application 130, and can provide a communication service in a timely manner.

  For example, priority is given to a function with high update frequency, such as DBA (Dynamic Bandwidth Assignment) which improves the priority processing of the main signal and the use efficiency of the line, or a function contributing to communication service differentiation, and the device dependent unit 110 or device independent The application 130 may be determined. Furthermore, the device-independent application 130 may be used because the difference between the standards, the generation, the method, the system, the device type, and the manufacturing vendor with which the device to be shared conforms is small.

  Even if it is not optimal for at least one of the compliant standards, generations, methods, systems, device types, or manufacturing vendors, any of the standards, generations, methods, systems, device types, or manufacturing vendor functions to comply with In order to generalize a common IF, a common IF for executing a function may be used. The common IF may include IFs and parameters that are not used in any of the standards, generations, systems, systems, device types, and manufacturing vendors that the device-dependent unit 110 complies with.

  The middleware 120 shown in FIG. 3 and FIG. 4 described later, the driver of the device dependent unit 110 shown in FIG. 5 and FIG. 6 described later, and the device dependent application unit (vendor dependent) shown in FIG. 4 and FIG. 6 described later. A conversion function unit that converts IF, parameters, and the like so as to correspond to the device-dependent unit 110, and a function unit that automatically sets corresponding to the insufficient IF, parameters, etc. Also good.

  The hardware unit (PHY) 111 included in the device-dependent unit 110 illustrated in FIG. 3 executes processing from the physical layer to processing related to optical transmission and reception (PHYsical subscriber processing). The hardware unit (MAC) 112 performs a MAC (Media Access Control) process. The hardware unit (PHY) 111 and the hardware unit (MAC) 112 depend on a standard or a manufacturing vendor that conforms thereto. The software unit 113 executes device-dependent drivers, firmware, applications, and the like.

  In addition to these, the hardware unit (PHY) 111 and the hardware unit (MAC) 112 of the device-dependent unit 110 may include a general-purpose server, a layer 2 switch, or the like. The device dependent unit 110 may not include the hardware unit (MAC) 112. The device dependent unit 110 may not include a part of the hardware unit (PHY) 111. For example, the device-dependent unit 110 may have only light-related functions without providing low-level signal processing such as modulation / demodulation signal processing, forward error correction (FEC), codec decoding processing, and encryption processing. Good. The device dependent unit 110 may not include a PCS (Physical Coding Sublayer) that encodes data. The device dependence unit 110 may not include a PMA (Physical Medium Attachment) and PCS that serialize data. The device dependent unit 110 may not include a PMD connected to a physical medium. When the middleware 120 directly drives, controls, operates, or manages the hardware unit (PHY) 111 and the hardware unit (MAC) 112 of the device dependent unit 110 without using the software unit, the device dependent unit 110 is a software unit. May not be provided.

  The device-independent application 130 includes, for example, an extended function unit (in FIG. 3, an extended function A 131-1, an extended function B 131-2, and an extended function C 131-3) 131, a basic function unit 132, and a management / control agent unit 133. With. The management / control agent unit 133 acquires data from an EMS (Element Management System) 140. In the figure, the EMS 140 and the external device 150 are connected to the device independent application 130 via the middleware 120. However, the EMS 140 and the external device 150 need not necessarily be connected to the device independent application 130 via the middleware 120. There is no. The EMS 140 and the external device 150 may be appropriately connected to the middleware 120 as necessary, or may be directly connected to the device-independent application 130. Moreover, although expressed as “connected via middleware 120”, this expression is an expression from the viewpoint of the device-independent application 130. Actually, the function-independent applications are connected to each other via the middleware 120 after the connection with the hardware.

  Hereinafter, items common to the extended function unit are denoted by “extended function unit” with a part of the reference numerals omitted. The EMS 140 is, for example, an NE controller. The device-independent application 130 may not include any of the extended function unit, the basic function unit 132, and the management / control agent unit 133, and the management / control agent unit 133 is included in the basic function unit 132. Alternatively, the management / control agent unit 133 may be included in the basic function unit 132 or the middleware 120.

  The device-independent application 130 may further include configurations other than the extended function unit, the basic function unit 132, and the management / control agent unit 133. For example, when the extended function unit is unnecessary, the device-independent application 130 may not include the extended function unit. The device-independent application 130 may include one or more extended function units.

  It is preferable that the extended function unit can be added, deleted, replaced, or changed independently without unnecessarily affecting other functions. For example, the extended function unit may be appropriately added, deleted, replaced, or changed when an extended function unit that executes multicast service or power saving is required in accordance with a service request.

  The basic function unit 132 may be included in the device-independent application 130 as a part of the extended function unit, or may be replaced by a lower-level function unit than the middleware 120. When the extended function unit includes the basic function unit 132, the device-independent application 130 may not include the basic function unit 132. When a functional unit lower than the middleware 120 substitutes for the basic function unit 132, the device-independent application 130 may not include the basic function unit 132. When the extended function unit includes the basic function unit 132 and the function unit lower than the middleware 120 substitutes for the basic function unit 132, the device-independent application 130 may not include the basic function unit 132.

  The management / control agent unit 133 does not need to input / output from / to the EMS 140 in the case where automatic setting is performed according to a predetermined setting without receiving communication from the EMS 140. Furthermore, when the management / control agent unit 133 does not have a management setting function and the other device-independent application 130, the basic function unit 132, and the device-dependent unit 110 have a management setting function, the device-independent application 130 The control agent unit 133 may not be provided.

  The EMS 140 and the device-independent application 130 may directly input / output information. In addition, the device dependence unit 110 may be replaced by an NE management / control unit 115 and a device-dependent application unit (see FIG. 4 described later and FIG. 6 described later) as a functional unit lower than the NE management / control unit 115. .

  The management / control agent unit 133 does not need to input / output information to / from the EMS 140 when performing automatic setting according to a predetermined setting. Further, when the management / control agent unit 133 does not have the management setting function and the other device-independent application 130, the basic function unit 132, and the device-dependent unit 110 have the management setting function, the device-independent application 130 The agent unit 133 may not be provided. The EMS 140 and the device-independent application 130 may directly input / output information.

Examples of input / output between the device-independent application 130 and the device-dependent unit 110 are as follows.
For example, the DBA application unit and the protection application unit mutually input / output information from / to the TC layer embedded OAM engine (Embedded OAM Engine). A Dynamic Wavelength and Bandwidth Assignment (DWBA) application and an ONU registration / authentication application unit input / output information to / from the TC layer PLOAM engine. The power saving application unit inputs and outputs information to and from the OMCI and L2 main signal processing function unit (L2 function unit). An MLD (Multicast Listener Discover) proxy application unit inputs and outputs information to and from the L2 function unit. The low speed monitoring application (OMCI) inputs / outputs information to / from the OMCI. The OMCI and L2 function units operate XGEM framer (XGPON Encapsulation Method Framer) and encryption. Here, DWBA and DBA may be separate, integrated or combined. For example, the management / control agent unit 133 is an application unit for a maintenance operation function, and inputs / outputs information to / from the EMS 140 such as an NE controller for the NE management / control unit 115.

  The device-independent application 130 is a device vendor, method, device type, device generation, for example, ITU-TG. TWDM-PON conforming to the 989 series and ITU-T G. XG-PON conforming to the 987 series and ITU-T G. G-PON conforming to the 984 series and ITU-T G. It is an application that operates without depending on any of B (Broadband) PON conforming to the 983 series. The device-independent application 130 is a device vendor, method, device type, device generation, for example, a difference between 10GE-PON conforming to IEEE802.3av, IEEE1904.1, etc., and GE-PON conforming to IEEE802.3ah, etc. It is an app that works at least regardless of either.

As an application of the extended function section, only an application for driving a function provided for some vendors, methods, types, and generations and devices of some vendors, methods, types, and generations via the device-independent API 21 An application that drives the provided function may be included.
The management / control agent unit 133 inputs and outputs with the EMS 140 and the middleware 120. The middleware 120 inputs and outputs NE management information and control information to and from the NE management / control unit 115. The NE management / control unit 115 may directly transmit / receive the NE management information and control information to / from the EMS 140 without going through the middleware 120, or send / receive NE management information and control information via the management / control agent unit 133. May be.

  The middleware 120 inputs and outputs information via the device independent application 130 and the device independent API 21. The middleware 120 inputs and outputs information to and from the OAM unit 114, driver, firmware, hardware unit, or hardware unit of the device dependent unit 110 via the device dependent API 23. The middleware 120 outputs the input information as it is or in a predetermined format. For example, if the output destination is each unit of the device-independent application 130, the middleware 120 converts the information into the input format of each unit of the device-independent API 21. If the output destination is the OAM unit 114, driver, firmware, hardware unit, or hardware unit of the device-dependent unit 110, the middleware 120 converts to the format of the device-dependent API 23 of the format to be input to each, or terminates Then, after performing a predetermined process, the information is transmitted to the output destination.

  It is desirable that the middleware 120 deletes unnecessary input information at each input destination at the time of input, and collects and supplements via the other device-independent API 21 or device-dependent API 23 if there is insufficient information. . In addition, at the time of input to the middleware 120, it may be broadcast or multicast and broadcast to related applications.

  In FIG. 3, the middleware 120 and the device-dependent unit 110 are illustrated as a single unit, but may be configured from a plurality of units. When the hardware of the device dependence unit 110 includes a plurality of processors, the middleware 120 may input / output using inter-processor communication or the like across the processors and hardware. The device-independent applications 130 and the device-independent applications 130 may be arranged on a user space on a single processor as an execution program such as a DLL (Dynamic Link Library), or user spaces on a plurality of processors. You may arrange on top.

  Further, the device-independent application 130 may be arranged in the kernel space after securing an input / output IF such as an API, or may be arranged together with the middleware 120 having an IF that can be independently replaced with firmware or the like. Alternatively, it may be recompiled by incorporating it in firmware or the like. User space or kernel space may be arbitrarily combined for each device-independent application 130.

  The device independent application 130 corresponding to the same function may be implemented in both the user space and the kernel space. In this case, for example, either may be selected by switching, both may be processed in cooperation, or actual processing may be performed by only one of them. The same applies to the software of the device dependent unit 110.

  Desirably, as high-speed processing is required as in main signal processing, DBA processing, and low-layer signal processing, there is a trade-off between scalability and immediacy of replacement, but high-speed processing is expected with less overhead. It is desirable to incorporate in kernel space and firmware. The processor in which the device-dependent application unit (see FIG. 4 to be described later and FIG. 6 to be described later) is arranged also performs actual processing from the viewpoint of influence on other programs due to restrictions on buses and speeds due to communication between processors and occupation of communication paths. It is desirable to arrange it on the user space, kernel space, or firmware of the processor that performs the processing or in the vicinity of the processor. However, in order to reduce the ability of a processor that performs actual processing or a processor in the vicinity thereof, the communication cost due to communication between processors increases, but processing may be performed by a remote processor.

  The device-independent API 21 is preferably provided in advance in the middleware 120 assuming an extended function unit to be added. However, the device-independent API 21 is added as necessary in a form that suppresses modification of the device-dependent API 23 and other device-independent applications 130. Or it may be deleted.

  In this example, the software area is the basic function unit 132, the management / control agent unit 133, the extended function unit, and the middleware 120. However, the software area includes service adaptation (encryption, fragment processing, GEM frame conversion). / XGEM framing, PHY adaptation FEC, scramble, synchronous block generation / extraction, GTC (GPON Transmission Convergences) framing, PHY framing, SP conversion, and coding method may also be targeted. An example and an example of function deployment corresponding to the hardware unit (PHY) 111 and the hardware unit (MAC) 112 will be described, for example, the function deployment includes a software function in a network device or an external server. Same for example It is like.

(Second example of architecture)
FIG. 4 is a diagram illustrating a second example of the architecture of the communication device. In FIG. 4, the communication device is configured to further include a device-dependent application unit 160 under the middleware 120 of the communication device illustrated in FIG. 3. The second example of the architecture is the same as the first example of the architecture except that the device-dependent application unit 160 is provided.

  In FIG. 4, the communication device includes a hardware unit (PHY) 111 and a hardware unit (MAC) 112 that depend on the standard of the device-dependent unit 110 to be complied with or a device manufacturing vendor, and a hardware unit (PHY) 111 and a hardware unit. A driver that drives the hardware unit (MAC) 112, a software unit that executes firmware, and the like, and a hardware unit (PHY) 111, a hardware unit (MAC) 112, and at least a part of the software unit of the device-dependent unit 110 are driven A device-dependent application unit 160, a middleware 120 that conceals the difference between the hardware unit, hardware unit, software unit, and device-dependent application unit 160 of the device-dependent unit 110, and a general-purpose device-independent application 130 that does not depend on the device. Prepare.

  The middleware 120 and the device-dependent application unit 160 are connected by a device-dependent API 23. The device dependent application unit 160, the OAM unit 114, the software unit, the hardware unit (PHY) 111, and the hardware unit (MAC) 112 of the device dependent unit 110 are connected by a device dependent API 24. The device-dependent application unit 160 and the management / control agent unit 133 are connected by an API.

  The device-independent application 130 includes, for example, a management / control agent unit 133 that receives communication from the EMS 140, a basic function unit 132, and an extended function unit. As in the first example of the architecture, the device-independent application 130 does not have to include any of the management / control agent unit 133, the basic function unit 132, and the extended function unit. The device-independent application 130 may further include a function unit other than the management / control agent unit 133, the basic function unit 132, and the extended function unit. Further, as in the first example of the architecture, it is preferable that the extended function unit can be added, deleted, replaced, or changed without affecting other functions.

The basic function unit 132 may be included as a part of each extended function unit, or may be substituted below the middleware 120. When the extended function unit includes the basic function unit 132, when the lower level of the middleware 120 replaces the basic function unit 132, or a combination thereof, the device-independent application 130 does not include the basic function unit 132. Good.
In addition, a part of the basic function unit 132 may be replaced by the lower device dependent application unit 160 of the middleware 120. The management / control agent unit 133 does not need to input / output information to / from the EMS 140 when performing automatic setting according to a predetermined setting. Further, when the management / control agent unit 133 does not have the management setting function and the other device-independent application 130, the basic function unit 132, and the device-dependent unit 110 have the management setting function, the device-independent application 130 The control agent unit 133 may not be provided.
The EMS 140 and the device-independent application 130 may directly input / output. When the lower level of the middleware 120 replaces all of the basic function unit 132, the device-independent application 130 may not include the basic function unit 132.

  In the communication device shown in FIG. 4, the device-dependent application unit 160 may input / output information via the middleware 120, may directly input / output information from the management / control agent unit 133, Information may be input / output to / from any of them, or directly to / from the EMS 140. In addition, when the device-dependent application unit 160 is automatically set according to a predetermined setting without receiving communication from the EMS 140 and can acquire management and control information from the EMS 140 via the middleware 120, there is no device. The dependent application 130 may not include the management / control agent unit 133.

The device-independent application 130 inputs and outputs information via the middleware 120 at least between the hardware unit (PHY) 111 and the hardware unit (MAC) 112 of the device-dependent unit 110 or between the software unit. The device-independent application 130 inputs and outputs to / from each other via the middleware 120 as necessary. In particular, when the device-independent application 130 executes control or management according to information input / output from / to the EMS 140, the device-independent application 130 inputs information from / to the management / control agent unit 133 that receives communication from the EMS 140. Output.
The NE management / control unit 115 inputs / outputs NE management information and control information to / from the management / control agent unit 133 via the middleware 120. The NE management / control unit 115 may directly input / output NE management information and control information to / from the EMS 140 without using the middleware 120.

The device-dependent application unit 160 inputs and outputs NE management information and control information to and from the management / control agent unit 133. The device-dependent application unit 160 may directly input / output information to / from the EMS 140 without using the management / control agent unit 133. The management / control agent unit 133 inputs / outputs information between the EMS 140, the middleware 120, and the device-dependent application unit 160. The middleware 120 inputs and outputs NE management information and control information to and from the NE management / control unit 115.
The NE management / control unit 115 may directly input / output NE management information and control information to / from the EMS 140 without using the middleware 120. The middleware 120 inputs and outputs information to and from the device-independent application 130 via the device-independent API 21, and the OAM unit 114, driver, firmware, hardware unit (PHY) 111, and hardware of the device-dependent unit 110. Information is input to and output from the unit (MAC) 112 via the device-dependent API 23.

  As with the middleware 120 shown in FIG. 3, the middleware 120 is input as it is or in a predetermined format. The device-independent API 21 is preferably provided in the middleware 120 in advance, assuming an extended function unit to be added later. However, if necessary, the device-independent API 21 is configured to suppress modification of the device-dependent API 23 and other device-independent applications 130. May be added or deleted.

(Third example of architecture)
FIG. 5 is a diagram illustrating a third example of the architecture of the communication device. 5, instead of the middleware 120 described in the first example of the architecture shown in FIG. 3, the basic function unit 132 includes a hardware unit (PHY) 111, a hardware unit (MAC) 112, and an extended function unit. Perform input / output. The other device-independent application 130 is the same as the first example of the architecture.

  Compared to the first example of the architecture, the third example creates the middleware 120 having the device-dependent API for each device in which at least one of the compliant standard, generation, method, system, device type, and manufacturing vendor differs. There is no need. As a result, the communication device of the third example of the architecture is advantageous in that more functions can be generalized and ported between the generations between apparatuses, the connectivity can be easily verified, and the functions of the apparatuses become robust.

  A communication device according to the third example of the architecture includes a device-dependent unit 110 and a device-independent application 130. The device-dependent unit 110 includes a hardware unit (PHY) 111 and a hardware unit (MAC) 112 that depend on a compliant standard or a device manufacturer, and a hardware unit (PHY) 111 and a hardware unit (MAC) 112. And a software unit such as a driver and firmware for driving the computer. The driver or the like hides the difference of the device dependence unit 110.

  The device-independent application 130 includes an extended function unit and a basic function unit 132. The basic function unit 132 is device-dependent by a device-independent API 27 (porting IF) via a driver that hides the difference between the hardware unit (PHY) 111 and the hardware unit (MAC) 112 and the device-dependent software unit. The unit 110 is connected. The device-independent application 130 includes a hardware unit (PHY) 111 and a hardware unit via a driver that conceals the difference between the hardware unit (PHY) 111 and the hardware unit (MAC) 112 and the device-dependent software unit. Data is input / output between the (MAC) 112 and the device-dependent software unit.

The basic function unit 132 and the extended function unit are connected via the device-independent API 22 (extension IF). The basic function unit 132 and the device dependent unit 110 are connected via the device independent API 27. The basic function unit 132 in the device-independent application 130 inputs and outputs information between the hardware unit (PHY) 111, the hardware unit (MAC) 112, and the extended function unit instead of the middleware 120. .
The device-independent application 130 inputs and outputs to / from each other via the basic function unit 132 as necessary. The extended function unit of the device-independent application 130 inputs and outputs information via the basic function unit 132 and the device-independent API 27. The basic function unit 132 inputs and outputs information via the device-independent application 130 and the device-independent API 27, and the OAM unit 114, driver, firmware, hardware unit (PHY) 111, and hardware unit ( MAC) 112 and the device independent API 27 to input / output information.

  As in the middleware 120 shown in FIG. 3, the basic function unit 132 inputs the operation information as it is or in a predetermined format. For example, in the case of another device-independent application 130, the basic function unit 132 converts each into an input-independent device-independent API format, and the device-dependent OAM unit 114, driver, firmware, and hardware unit If there is, the operation information is input after conversion to the device-independent API format of the input format or after terminating and performing predetermined processing. At the time of input, the basic function unit 132 deletes unnecessary input information at each input destination, and if there is insufficient information, it is collected and supplemented via another device-independent API or device-independent API. It is desirable. However, the basic function unit 132 may broadcast or multicast the input to the input destination and broadcast it to related applications or the like.

  The device-independent application 130 includes, for example, an extended function unit and a basic function unit 132. The device-independent application 130 may not include either the extended function unit or the basic function unit 132. The device-independent application 130 may further include a function unit other than the extended function unit and the basic function unit 132. For example, when the extended function unit is unnecessary, the device-independent application 130 may not include the extended function unit.

It is preferable that the extended function unit can be added or deleted independently without affecting other functions. For example, according to the service requirements, for example, when the extended function unit is a multicast service and power saving support, the extended function unit is added as needed, and deleted when it is no longer needed, It may be replaced or changed according to the change.
The device-independent API 22 is preferably provided in advance in the basic function unit 132 assuming an extended function unit to be added later. However, the device-independent API 22, the device-independent API 27, and other device-independent are provided as necessary. You may add or delete in the form which suppresses the modification | change of the application 130. FIG.

(Fourth example of architecture)
FIG. 6 is a diagram illustrating a fourth example of the architecture of the communication device. The difference between the fourth example of the architecture and the third example of the architecture is that the communication apparatus includes a device-dependent application unit 160 under the basic function unit 132. As described above, the communication device of the fourth example of the architecture has the effect that the configuration of the basic function unit 132 can be simplified by including the device-dependent application unit 160.

The communication apparatus illustrated in FIG. 6 includes a device-dependent unit 110 and a device-independent application 130. The device-dependent unit 110 includes a hardware unit (PHY) 111 and a hardware unit (MAC) 112 that depend on a compliant standard or a device manufacturer, a hardware unit (PHY) 111, and a hardware unit (MAC) 112. A software unit such as a driver and firmware for driving, and a device-dependent application unit 160 for driving at least a part of the device-dependent unit 110 are included. The device-independent application 130 may be a porting IF, a hardware unit (PHY) 111, a hardware unit (MAC) 112, and a driver that hides the difference between the device-dependent software or the porting IF and the device-dependent application unit. 160, a general-purpose device-independent application 130 that executes device-independent processing. The basic function unit 132 in the device independent application 130 and the device dependent application unit 160 in the device dependent unit 110 are connected via the device independent API 27. The device dependent application unit 160 and the device dependent unit 110 are connected via a device dependent API 24.
The basic function unit 132 in the device-independent application 130 performs input / output with the hardware and the extended function unit instead of the middleware 120. The basic function unit 132 may include a management / control agent unit 133 that receives communication from the EMS 140, or may include a management / control agent unit 133 as an extended function unit.

The basic function unit 132 inputs and outputs via the device-independent application 130 and the device-independent API 22 (extension IF), and the OAM unit 114, driver, firmware, hardware unit (PHY) 111, and hardware of the device-dependent unit 110 Input / output is performed via the device dependent API 24 and the driver of the device dependent unit 110 or the device dependent application unit 160 that conceals the difference between the hardware unit (MAC) 112, the device independent API 27 (porting IF), and the device dependent unit 110.
As in the middleware 120 shown in FIG. 3, the basic function unit 132 inputs the data as it is or in a predetermined format. As in the third example of the architecture, the basic function unit 132 may include a management / control agent unit 133 that receives communication from the EMS 140, or includes a management / control agent unit 133 as an extended function unit. May be.

The device-independent application 130 includes, for example, an extended function unit and a basic function unit 132. The device-independent application 130 does not need to include either the extended function unit or the basic function unit 132, as in the third example of the architecture. The device-independent application 130 may further include a function unit other than the extended function unit and the basic function unit 132 as in the third example of the architecture.
As in the third example of the architecture, it is preferable that the extension function unit can be added, deleted, replaced, or changed independently of each other without affecting other functions. A part of the basic function unit 132 may be replaced with the device-dependent application unit 160. The device-dependent application unit 160 directly inputs / outputs information from the basic function unit 132. However, the device-dependent application unit 160 may input / output information to / from the EMS 140 without using the basic function unit 132 as it is or after a predetermined conversion. Good.

  As in the first example of the architecture shown in FIG. 3, the device-independent API 22 is preferably provided in advance in the basic function unit 132 assuming an extended function unit to be added later. You may add or delete as needed in the form which suppresses the modification of the dependence API27, the other apparatus independent application 130, the apparatus dependence application part 160, or the apparatus dependence API24.

(5th example of architecture)
The upper right diagram in FIG. 7 is a diagram illustrating a fifth example of the architecture. The lower right diagram in FIG. 7 corresponds to the first to fourth examples of the architecture. In this example, the communication device includes existing / commercial hardware and external hardware. For example, existing / commercial hardware is a non-generic device-dependent part that depends on the device. There are no middleware that hides the difference between hardware and software on the external hardware, and no general-purpose device whose operation does not depend on the device. With dependent apps. Therefore, the device-dependent part (vendor-dependent part) below the middleware in the figure is a functional part that depends on the standard that the equipment of the communication apparatus complies with and the manufacturer of the equipment. In addition, the device-independent application 130 is a functional unit that does not depend on a standard that the communication device device conforms to or a device manufacturer.

  The middleware and the device-independent application are connected via a device-independent API that is an input / output IF independent of the device. For example, a software part, an OAM, a hardware part (PHY), a hardware part (MAC), and a middleware on external hardware include a device dependent API that is an input / output IF depending on the device and an existing device dependent part. / Connected via inter-device connection between commercial hardware and external hardware.

  This architecture facilitates flexible and quick addition of an extended function unit (unique function unit) by a device-independent application, and can provide a communication service in a timely manner. Here, the device dependent unit may be the maintenance operation, access control, physical layer processing, and optical module shown in FIG. 7, and depends on the configuration of the device itself.

  For example, it is decided to prioritize functions with high update frequency such as DBA that improves the priority processing of main signals and line utilization efficiency, or functions that contribute to communication service differentiation, and make them device-dependent or device-independent apps. May be. Furthermore, a device-independent application may be used because the difference in at least one of a standard, a generation, a method, a system, a device type, and a manufacturing vendor that the device to be shared complies with is small.

  Even if it is not optimal for at least one of the compliant standards, generations, methods, systems, device types, or manufacturing vendors, any of the standards, generations, methods, systems, device types, or manufacturing vendor functions to comply with In order to generalize a common IF, a common IF for executing a function may be used. The common IF may include IFs and parameters that are not used in any of the standards, generations, systems, systems, device types, and manufacturing vendors that the device-dependent unit conforms to.

A conversion function unit that converts IF, parameters, etc. to correspond to the device-dependent unit and / or insufficient IF to at least one of the middleware, the device-dependent unit driver, and the device-dependent application unit (vendor-dependent application unit) And a function unit that automatically sets the parameters according to parameters.
The device dependent unit includes a hardware unit and a software unit. The software unit executes device-dependent drivers, firmware, applications, and the like.
The device-dependent unit may not include PMD and MAC connected to the physical medium, PMA that serializes data, and PCS or PHY that is a part that encodes data. For example, only light-related functions may be provided without low-level signal processing such as modulation / demodulation signal processing, forward error correction (FEC), codec decoding processing, and encryption processing.

  The device-independent application is, for example, a management / control agent unit that acquires data from EMS, an extended function unit, and a basic function unit. Hereinafter, items common to the extended function unit are denoted by “extended function unit” with a part of the reference numerals omitted. The EMS is, for example, a controller that controls network elements. The device-independent application may not include any of the management / control agent unit, the extended function unit, and the basic function unit.

The device-independent application may further include a configuration other than the management / control agent unit, the extended function unit, and the basic function unit. For example, when the extended function unit is unnecessary, the device-independent application may not include the extended function unit. In addition, the device-independent application may include one or more extended function units.
It is preferable that the extended function unit can be added, deleted, replaced, or changed independently without unnecessarily affecting other functions. For example, the extended function unit may be appropriately added, deleted, replaced, or changed when an extended function unit that executes multicast service or power saving is required in accordance with a service request.

  The basic function unit may be included in the device-independent application as a part of the extended function unit, or may be replaced by a lower-level function unit than the middleware. When the extended function part includes the basic function part, the device-independent application may not include the basic function part. In the case where a functional unit lower than the middleware replaces the basic functional unit, the device-independent application may not include the basic functional unit. When the extended function unit includes the basic function unit and the function unit lower than the middleware replaces the basic function unit, the device-independent application may not include the basic function unit.

  The management / control agent unit does not need to input / output from / to the EMS when performing automatic setting according to a predetermined setting without receiving communication from the EMS. Furthermore, when the management / control agent unit does not have a management setting function and other device-independent applications, basic function units, and device-dependent units have a management setting function, the device-independent application has a management / control agent unit. It does not have to be.

The EMS and the device independent application may directly input / output information. In addition, the device dependence unit may not include the NE management / control unit and the NE management / control unit IF.
The basic function unit may be included in the device-independent application as a part of the extended function unit, or may be replaced by a lower-level function unit of middleware. When the extended function unit includes a basic function unit, when a lower-level function unit of middleware replaces the basic function unit, or a combination thereof, the device-independent application may not include the basic function unit. Also, a part of the basic function unit may be replaced by a device-dependent application unit that is a lower-level function unit of the middleware.

  The management / control agent unit does not need to input / output information from / to the EMS when performing automatic setting according to a predetermined setting. Furthermore, if the management / control agent unit does not have a management setting function and other device-independent applications, basic function units, and device-dependent units have a management setting function, the device-independent application does not have a management / control agent unit. May be. The EMS and the device independent application may directly input / output information.

  Examples of input / output between the device-independent application and the device-dependent unit are as follows. For example, the DBA application unit and the protection application unit input / output information to / from the TC layer embedded OAM engine. The DWBA application and the ONU registration / authentication application unit input / output information to / from the TC layer PLOAM engine. The power saving application unit inputs and outputs information to and from the OMCI and L2 main signal processing function unit (L2 function unit). The MLD proxy application unit inputs and outputs information to and from the L2 function unit. The low speed monitoring application (OMCI) inputs / outputs information to / from the OMCI. The OMCI and L2 function units operate the XGEM framer and encryption. Here, DWBA and DBA may be separate, integrated, or combined. For example, the management / control agent unit is an application unit for the maintenance operation function, and inputs / outputs information to / from the EMS, which is an NE controller for the NE management / control unit.

  The device-independent application includes a device vendor, a method, a device type, a device generation, for example, ITU-TG. TWDM-PON conforming to the 989 series and ITU-T G. XG-PON conforming to the 987 series and ITU-T G. G-PON conforming to the 984 series and ITU-T G. It is an application that operates without depending on any of the BPON conforming to the 983 series. The device-independent application is a device vendor, method, device type, device generation, for example, at least the difference between 10GE-PON conforming to IEEE802.3av, IEEE1904.1, etc. and GE-PON conforming to IEEE802.3ah, etc. It's an app that works regardless of either.

As an application of the extended function section, only for apps for driving functions provided for some vendors, methods, types, and generations, and devices for some vendors, methods, types, and generations via device-independent APIs. An application that drives the provided function may be included.
The management / control agent unit inputs / outputs from / to the EMS and middleware. The middleware inputs and outputs NE management information and control information to and from the NE management / control unit. The NE management / control unit may directly transmit / receive NE management information and control information to / from EMS without using middleware, or may transmit / receive NE management information and control information to / from the management / control agent unit. Good.

  The middleware inputs and outputs information via a device-independent application and a device-independent API. The middleware inputs / outputs information to / from the OAM unit, driver, firmware, hardware unit, or hardware unit of the device dependent unit via the device dependent API. The middleware outputs the input information as it is or in a predetermined format. For example, if the output destination is each part of a device-independent application, the middleware converts information into the input format of each part of the device-independent API. If the output destination is an OAM unit, a driver, firmware, a hardware unit, or a hardware unit of a device-dependent unit, the middleware is converted into a device-dependent API format of a format to be input to each, or terminated and predetermined. After performing the above process, the information is transmitted to the output destination.

It is desirable for the middleware to delete unnecessary input information at each input destination at the time of input, and to collect and supplement any missing information via other device-independent API or device-dependent API. In addition, when inputting to the middleware, it may be broadcast or multicast and broadcast to related applications.
Although the middleware and the device-dependent unit are exemplified as a single unit, they may be composed of a plurality of units. When the hardware of the device-dependent unit includes a plurality of processors, the middleware may input / output using inter-processor communication or the like across the processors and hardware. Between device-independent apps and device-independent apps may be placed on a user space on a single processor as an execution program such as a DLL, or on a user space on multiple processors. .

In addition, the device-independent application may be arranged in the kernel space after securing an input / output IF such as an API, or may be arranged together with middleware having an IF that can be replaced with firmware independently. It is also possible to recompile the program by incorporating it. User space and kernel space may be arbitrarily combined for each device-independent application.
A device-independent application corresponding to the same function may be implemented in both user space and kernel space. In this case, for example, either may be selected by switching, both may be processed in cooperation, or actual processing may be performed by only one of them. The same applies to the software of the device dependent unit.

  Desirably, as high-speed processing is required as in main signal processing, DBA processing, and low-layer signal processing, there is a trade-off between scalability and immediacy of replacement, but high-speed processing is expected with less overhead. It is desirable to incorporate in kernel space and firmware. The processor in which the device-dependent application unit is arranged also has the user space of the processor that performs the actual processing or the processor in the vicinity thereof from the viewpoint of the influence on the other programs due to the restriction of the bus and the speed due to the communication between the processors and the occupation of the communication path It is desirable to place it in kernel space or firmware. However, in order to reduce the ability of a processor that performs actual processing or a processor in the vicinity thereof, the communication cost due to communication between processors increases, but processing may be performed by a remote processor.

  It is desirable that the device-independent API is pre-installed in the middleware assuming an extended function unit to be added, but it is added or deleted as necessary in a form that suppresses modification of the device-dependent API and other device-independent applications. May be.

(Sixth example of architecture)
The sixth example of the architecture includes a hardware unit (PHY) and a hardware unit (MAC) depending on a standard or a device manufacturing vendor that conforms as a device-dependent unit, and a hardware unit (PHY) and a hardware unit (MAC). And a software unit such as driver / firmware for driving the device and a device-dependent application unit for driving at least a part of the device-dependent unit.

  The device-dependent application unit and the device-dependent unit are connected via a device-dependent API. The device-dependent application unit may include a management / control agent unit corresponding to communication from the EMS. The device-dependent API may be added or deleted as necessary in a form that suppresses modification of the device-dependent application unit and the device-dependent API.

  The communication device configurations shown in the first to sixth examples of the communication device architecture are described on the premise of an PON OLT conforming to the ITU-T recommendation such as TWDM-PON. It may be either PON OLT or ONU compliant with ITU-T recommendations other than TWDM-PON, or PON compliant with IEEE standards such as GE-PON, 10GE-PON, etc. A layer or PMD layer is the same if it is read as the corresponding layer.

  TWDM-PON is a PON multicast function, a power saving control function, a frequency / time synchronization function, a protection function, a maintenance operation function, an L2 main signal processing function, a PON access control function, and a PON main signal. A case where the processing function is mainly provided will be described as an example. Hereinafter, a PON multicast function, a power saving control function, a frequency / time synchronization function, a protection function, a maintenance operation function, an L2 main signal processing function, a PON access control function, and a PON main signal processing function, It is called “Main 8 functions”.

FIG. 8 is a diagram illustrating an example of the configuration of the communication device and the external server 16. The communication system includes a communication device and an external server 16. The communication apparatus includes at least a part of a transmission / reception unit 11 (TRx), a switch unit 12 (SW), a switch unit 13 (SW), a control unit 14, and a proxy unit 15. Note that the communication device may include an external server 16.
Although FIG. 8 shows a configuration in which transmission / reception units 11 that transmit and receive (communication) optical signals having different wavelengths (λA to λN) are connected to the same switch unit 12, Embodiment 1-1 is not limited to this. For example, in addition to the configuration in which the transmission / reception unit 11 that transmits and receives optical signals of different wavelengths (λA to λN) is connected to the same switch unit 12, the transmission / reception unit 11 that transmits and receives optical signals of the same wavelength is the same switch. The transmission / reception unit 11 may be connected to the unit 12, or at least some of the transmission / reception units 11 among the transmission / reception units 11 that transmit and receive optical signals having different wavelengths (λA to λN) are connected to the same switch unit 12. Alternatively, a part or all of the transmission / reception unit 11 may be the transmission / reception unit 11 that performs only transmission or reception.

The communication device such as the OLT may include the control unit 14 from the transmission / reception unit 11 or may further include an external server 16 in addition to these. The OSU may be the transmission / reception unit 11 or may include a switch unit 12 (SW) or a switch unit 13 (SW) in addition to the transmission / reception unit 11.
The communication system having the communication system configuration (1-1) includes a transmission / reception unit 11 (TRx), a switch unit 12 (SW), a switch unit 13 (SW), a control unit 14, a proxy unit 15, and an external server 16. (FIG. 8).

When the communication apparatus is an OLT, the OLT may be configured by a transmission / reception unit 11 (TRx), a switch unit 12 (SW), a switch unit 13 (SW), and a control unit 14, or the transmission / reception unit 11. (TRx), a switch unit 12 (SW), a switch unit 13 (SW), a control unit 14, and an external server 16 may be used. The OSU may be configured with the transmission / reception unit 11 (TRx), may be configured with the transmission / reception unit 11 (TRx), and the switch unit 12 (SW), or may be configured with the transmission / reception unit 11 (TRx) and the switch. You may comprise from the part 13 (SW).
A transmission / reception unit 11 (TRx) that transmits and receives optical signals having different wavelengths (λA to λN) is connected to the switch unit 12. The transmission / reception unit 11 (TRx) performs autonomous control or is controlled from other components such as the switch unit 12 (SW), the switch unit 13 (SW), the control unit 14, the proxy unit 15, or the external server 16, Alternatively, it is controlled by an instruction transferred via another component such as the switch unit 12 (SW), the switch unit 13 (SW), the control unit 14, the proxy unit 15, or the external server 16. The transmission / reception unit 11 (TRx) transmits a part of or all of the traffic of the ODN (Optical Distribution Network) or the switch unit 12 (SW) according to a predetermined procedure, VLAN (Virtual Local Area Network), priority, discard priority, or destination. Processing of at least one of aggregating, distributing, allocating, duplicating, folding, or transparent, or a combination thereof, with addition, deletion, replacement of tags, etc. I do.

  Note that upstream traffic is not necessarily aggregated. The switch unit 12 (SW) is mainly allocated for each wavelength in the configuration of the communication system configuration (1-1), but represents aggregation, distribution, duplication, loopback, transmission, VID (Virtual LAN Identifier) and priority discard Tag addition such as tags or tag replacement may be performed. In the configuration of the communication system configuration (1-2) described later, the upstream traffic is mainly aggregated, but distribution, distribution, duplication, loopback, transparency, tag addition, or tag replacement may be performed. Downlink traffic may also be aggregated, distributed, distributed, duplicated, looped back, transparent, tagged, or tagged, or at least some combinations may be performed. Which one is to be determined is determined according to the service policy. The same applies to the subsequent communication system configurations.

  The switch unit 12 (SW) is connected to the switch unit 13 (SW). The switch unit 12 (SW) performs autonomous control or is controlled from other components such as the transmission / reception unit 11 (TRx), the switch unit 13 (SW), the control unit 14, the proxy unit 15 or the external server 16, Alternatively, it is controlled by an instruction transferred via another component such as the transmission / reception unit 11 (TRx), the switch unit 13 (SW), the control unit 14, the proxy unit 15, or the external server 16. The switch unit 12 (SW) sends at least a part of the VLAN, priority, discard priority, destination, or the like to a part or all of the traffic of the transmission / reception unit 11 (TRx) or the switch unit 13 (SW) according to a predetermined procedure or Add, delete, or replace tags in the combination, or at least part of aggregation, distribution, distribution, duplication, loopback, transparency, tag addition, or tag replacement, or combinations thereof, without changing tags Process. The same applies to the subsequent communication system configurations.

  Note that the switch unit 12 (SW) is not necessarily controlled. There are a case where at least one of the proxy units 15 is controlled from the transmission / reception unit 11 and a case where control information is transferred from the transmission / reception unit 11 to at least one of the proxy units 15 without being controlled. For example, the proxy unit 15 or the external server 16 is used as the transfer source. Further, the proxy unit 15 may move autonomously from the transmission / reception unit 11. The same applies to the subsequent communication system configurations.

  The switch unit 13 (SW) is connected to the proxy unit 15 directly or via a concentrator SW. This concentrator SW performs at least a part of aggregation, distribution, distribution, duplication, loopback, or transmission on traffic from or to a plurality of OLTs. The switch unit 13 (SW) performs autonomous control or is controlled from other components such as the transmission / reception unit 11 (TRx), the switch unit 12 (SW), the control unit 14, the proxy unit 15, or the external server 16, Alternatively, it is controlled by an instruction transferred via another component such as the transmission / reception unit 11 (TRx), the switch unit 12 (SW), the control unit 14, the proxy unit 15, or the external server 16. The switch unit 13 (SW) is a part of the traffic of the switch unit 12 (SW) or the proxy unit 15 or all of them, according to a predetermined procedure, at least a part of VLAN, priority, discard priority, destination, or a combination thereof. Processing of at least a part of aggregation, distribution, distribution, duplication, loopback, or transparency or a combination thereof is performed without adding, deleting, or replacing tags, or without changing tags.

  The control unit 14 includes a transmission / reception unit 11 (TRx), a switch unit 12 (SW), a switch unit 13 (SW), a proxy unit 15 or an external server 16 or an external operation system (not shown), a controller (not shown), or an external Connected to a device (not shown). The control unit 14 controls other components such as the transmission / reception unit 11 (TRx), the switch unit 12 (SW), the switch unit 13 (SW), the proxy unit 15 or the external server 16, or the transmission / reception unit 11 (TRx). The instructions are transferred via other components such as the switch unit 12 (SW), the switch unit 13 (SW), the proxy unit 15 or the external server 16.

  The proxy unit 15 illustrated in FIG. 8 may be installed on the data path from the OLT to the OLT. However, since there may be other devices (for example, a concentrator SW that aggregates / distributes traffic from or to a plurality of OLTs) between them, they are not always directly connected. As a flow of control, the proxy unit 15 may be present in any of the transmission / reception unit 11 (TRx), the switch unit 12 (SW), the switch unit 13 (SW), the control unit 14, and the external server 16.

  The proxy unit 15 is connected directly to a higher-level device (not shown) or via a concentrator SW. This concentrator SW performs at least a part of aggregation, distribution, distribution, duplication, loopback, or transmission on traffic from or to a plurality of OLTs. The proxy unit 15 performs autonomous control or is controlled from other components such as the transmission / reception unit 11 (TRx), the switch unit 12 (SW), the switch unit 13 (SW), the control unit 14 or the external server 16, Alternatively, it is controlled by an instruction transferred via another component such as the transmission / reception unit 11 (TRx), the switch unit 12 (SW), the switch unit 13 (SW), the control unit 14 or the external server 16. The proxy unit 15 applies at least a part of the VLAN, priority, discard priority, destination, or the like to a part or all of the traffic of the switch unit 13 (SW) or a higher-level device (not shown) according to a predetermined procedure. Processing of at least a part of aggregation, distribution, distribution, duplication, folding, or transparency, or a combination thereof is performed without adding, deleting, or replacing tags of the combination or without changing the tag.

  The external server 16 includes a transmission / reception unit 11 (TRx), a switch unit 12 (SW), a switch unit 13 (SW), a control unit 14 or a proxy unit 15, an external operation system (not shown), a controller (not shown), or an external Connected to a device (not shown). The external server 16 controls other components such as the transmission / reception unit 11 (TRx), the switch unit 12 (SW), the switch unit 13 (SW), the control unit 14, or the proxy unit 15, or the transmission / reception unit 11 (TRx). The instruction is transferred via the switch unit 12 (SW), the switch unit 13 (SW), or other components such as the control unit 14 or the proxy unit 15.

  The transmission / reception unit 11 (TRx), the switch unit 12 (SW), the switch unit 13 (SW), the control unit 14, the proxy unit 15 or the external server 16 includes the transmission / reception unit 11 (TRx), the switch unit 12 (SW), and the switch unit. 13 (SW), a part of the traffic of other components such as the proxy unit 15 or the external server 16 or all of the traffic itself or a copy thereof, a part of the received traffic, all of the received traffic Other components such as the transmission / reception unit 11 (TRx), the switch unit 12 (SW), the switch unit 13 (SW), the proxy unit 15, or the external server 16, in response to partially or completely rewritten traffic or received traffic , Send to external operation system (not shown), controller (not shown) or external device (not shown) There.

Note that elements may not be included as appropriate, and exchanges with elements that do not include, for example, are skipped and exchanged with subsequent elements. You may communicate with each other between hub bodies.
In the communication system of the communication system configuration (1-2), the transmission / reception unit 11 (TRx) (λA) that transmits and receives optical signals of the same wavelength instead of different wavelengths is further added to the configuration of the communication system configuration (1-1). ˜λA), transmission / reception unit 11 (TRx) (λB to λB),..., Transmission / reception unit 11 (TRx) (λN to λN) are respectively connected to the switch unit 12. Furthermore, a plurality of transmission / reception units 11 having at least some wavelengths among the transmission / reception units 11 having different wavelengths may be connected to the switch unit 12. Others are the same.

  In the optical access system according to FIG. Complies with 989 series. In FIG. 9, the controller and the external device are not included in the OLT, but are described in order to illustrate communication with the FASA application API. The logical model includes a FASA application and a FASA base that provides the FASA application with a FASA application API. The FASA infrastructure includes middleware for FASA applications. The FASA application API middleware absorbs differences in hardware and software vendors and methods that make up the FASA infrastructure. A FASA application API set independent of vendors and systems is defined on the middleware for the FASA application API, and necessary functions are realized for each service or each communication carrier by replacing the FASA application. Communication between FASA applications and setting management by a controller or the like are performed via the FASA application API middleware. Note that FASA application API middleware may not be used. The FASA application API set is a common API group used in the FASA application, and an API required for each FASA application is selected from the API set and used.

  The connection relationship shown below is an example, and the connection interposed therebetween may be a connection that does not intervene, or may be connected to only a part of a plurality of connection relationships, or may be other connections. . The same applies to other explanations. The same applies to other explanations. The EMS functioning as the NE controller is an OLT setting management system such as NE-OpS. The middle management and the IF conversion application via the IF conversion application (for example, the low-speed monitoring application (EMS-IF) and the setting / management) App) is placed. The IF conversion application corresponds to an SBI application that converts an SBI (South Band Interface) command that is a control IF for a network entity such as OLT from an EMS such as an NE controller. If the IF conversion application performs IF conversion, but the low-speed monitoring application (EMS-IF) and the setting / management application have an API that performs IF conversion or does not need to perform IF conversion, the IF conversion application is It is not necessary to prepare. The low-speed monitoring application (EMS-IF) and the setting / management application connected to the L2 (layer 2) function are connected to NE control / management that performs EMS, NE management, and the like via middleware. The low speed monitoring application (OMCI), the MLD proxy application (multicast application), and the power saving application are each connected to the L2 function via middleware.

  The protection application is connected to the PLOAM Engine and Embedded OAM Engine via middleware. The power saving application is connected to the OMCI and the PLOAM Engine via middleware. The ONU registration authentication application and DWBA application are connected to the PLOAM Engine via middleware, and the DBA application is connected to the Embedded OAM Engine via middleware. The power saving application may be operated between the protection application, the ONU registration authentication application, the DWBA application, and the DBA application via the middleware. An input from an external device is connected to the DBA application via middleware. These connections are examples, and an input from an external device may be connected to an application other than the DBA application, such as a protection application or a DWBA application. Further, an input from an external device may be IF-converted via an IF conversion application via middleware, or connected to a DBA application or the like via a setting / management application via middleware.

  FIG. 10 is a diagram illustrating a flow of signals / information between functional units in the communication apparatus. The communication apparatus shown in the figure includes a PON main signal processing function unit 300, a PMD unit 310, a PON access control function unit 320, a maintenance operation function unit 330 (PLOAM processing, OMCI processing), and an L2 main signal processing function unit. 340, a PON multicast function unit 350, a power saving control function unit 360, a frequency / time synchronization function unit 370, and a protection function unit 380.

  The PON main signal processing function unit 300 has a PON main signal processing function. The PON main signal processing function is a function group that processes main signals transmitted to and received from the ONU, and includes generation and separation of PON frames, forward error correction (FEC), and the like. The PON access control function unit 320 has a PON access control function. The PON access control function is a control function group for performing the above-described main signal transmission / reception, and includes dynamic bandwidth allocation, ONU registration authentication, and the like.

  The maintenance operation function unit 330 (PLOAM processing, OMCI processing) has a maintenance operation function. The maintenance operation function is a group of functions for smoothly maintaining and operating a service by an access device. A function for performing device settings for ONUs and OLTs (OSUs and switches), software update, device and service management, various types It includes a function for monitoring whether the function is operating normally, a function for actively issuing an alarm when an abnormality occurs, a test function for investigating the range and cause when the abnormality occurs, and the like. In addition, the maintenance operation function is connected to a maintenance operation system that manages a large number of access devices, thereby realizing smooth maintenance operation from a remote location.

  The L2 main signal processing function unit 340 has an L2 main signal processing function. The L2 main signal processing function is a function group that transfers and processes main signals between the PON side port and the SNI side port, and includes functions such as MAC address learning, VLAN control, priority control, and traffic monitoring. The PON multicast function unit 350 has a PON multicast function. The PON multicast function is a function group that forwards a multicast stream received from the SNI side to an appropriate user, and includes a function of identifying and allocating the multicast stream and performing ONU filter setting.

  The power saving control function unit 360 has a power saving control function. The power saving control function is a group of functions for reducing the power consumption of ONUs and OLTs. In addition to the power saving function specified in the standardization, the influence on the service is minimized by linking with the traffic monitor. While including the function to get the maximum effect. The frequency / time synchronization function unit 370 has a frequency / time synchronization function. The frequency / time synchronization function is a function group for providing accurate frequency synchronization and time synchronization to the devices under the ONU. The frequency / time synchronization function is a function to subordinately synchronize its own real-time clock to the host device, or to the ONU using a PON frame. Includes a function to notify time information.

  The protection function unit 380 has a protection function. The protection function is a function group for continuing the service by switching or taking over from the active system to the standby system when a failure is detected in a configuration where redundancy is provided by a plurality of hardware such as between switches and OSUs. And functions such as detection of a switching trigger and execution of switching processing. In addition, the protection function provides a function to keep the service operating in a reduced operation without stopping the entire service when a failure is detected or manually switched. The PMD unit 310 has functions other than the main eight functions.

  The PON main signal processing function unit 300 may be connected to the PMD unit 310, the PON access control function unit 320, the maintenance operation function unit 330 (PLOAM processing, OMCI processing), and the L2 main signal processing function unit 340. Good. The PON multicast function unit 350 is connected to the group consisting of the PON main signal processing function unit 300, the PMD unit 310, the PON access control function unit 320, the maintenance operation function unit 330, and the L2 main signal processing function unit 340. It may be. The power saving control function unit 360 is connected to the group consisting of the PON main signal processing function unit 300, the PMD unit 310, the PON access control function unit 320, the maintenance operation function unit 330, and the L2 main signal processing function unit 340. You may do it. The frequency / time synchronization function unit 370 is a group including the PON main signal processing function unit 300, the PMD unit 310, the PON access control function unit 320, the maintenance operation function unit 330, and the L2 main signal processing function unit 340. It may be connected. The protection function unit 380 is connected to the group consisting of the PON main signal processing function unit 300, the PMD unit 310, the PON access control function unit 320, the maintenance operation function unit 330, and the L2 main signal processing function unit 340. May be.

  FIG. 11 is a diagram illustrating an example of a functional configuration of the PON main signal processing function unit 300. The PON main signal processing function unit 300 includes PHY adaptation, framing, and service adaptation in the processing order of the PON main signal processing function in the processing order of the upstream signal (downstream signal processing is the reverse direction). May be. These processes may be composed of basic processes. The basic processing includes synchronous block generation / extraction, scrambling / descrambling, FEC decoding / encoding, frame generation / separation, GEM (G-PON Encapsulation Method) encapsulation, fragment processing, and encryption. .

The PHY adaptation may include synchronization block extraction, descrambling, and FEC decoding in the order of upstream signal processing. The PHY adaptation may include FEC encoding, scrambling, and synchronization block generation in the order of downstream signal processing.
The PON main signal processing function unit 300 may implement equivalent processing by a combination of basic processing without providing PHY adaptation, framing, or service adaptation processing. The order of PHY adaptation, framing, or service adaptation may be switched. The PHY adaptation may include, for example, FEC processing other than PHY adaptation.

  In the main function of the PON main signal processing function unit 300, when processing of 10 Gbit / s / λ and 2.5 Gbit / s / λ is performed for each wavelength, 10 Gbit / s / λ and 2.5 Gbit / s / λ, respectively. If the above stream processing processes a plurality of wavelengths, a plurality of wavelengths are obtained.

  FIG. 12 is a diagram illustrating an example of a functional configuration of the PON access control function unit 320. Processing that constitutes the PON access control function of the PON access control function unit 320 includes ONU registration or authentication, DBA, and λ setting switching (DWA). These processes may be composed of basic processes. For example, ONU registration or authentication is ranging, authentication deletion, registration, start / stop, and DBA are bandwidth request reception, traffic measurement, history retention, allocation calculation, allocation processing, setting switching calculation, setting switching processing, setting All or some of switching status grasping, λ setting switching is from bandwidth request reception, traffic measurement, history retention, allocation calculation, allocation processing, setting switching calculation, setting switching processing, all or some of setting switching status grasping. It may be configured. Equivalent processing may be realized by a combination of basic processing without providing ONU registration or authentication, DBA, and λ setting switching (DWA). Further, the order may be changed.

As main functions of the PON access control function unit 320, ONU high-speed activation, BWMap within the DBA cycle, non-instantaneous λ setting switching, and the like are required as necessary. As an example of function sharing, registration or authentication may be time-critical ranging processing as a device-dependent unit and subsequent authentication or key exchange as an application. In DBA / λ setting switching, a simple repetitive process may be used as a device dependent unit, and reflection in an ideal state may be used as an application.
FIG. 13 is a diagram illustrating an example of a functional configuration of the L2 main signal processing function unit 340. The processes constituting the L2 main signal processing function of the L2 main signal processing function unit 340 include MAC learning, VLAN control, path control, bandwidth control, priority control, delay control, and Copy. These processes are basic processes such as address management, classifier (classifier, classification unit), modifier (modifier, change unit), policer / shaper (policer / shaper), cross connect (cross connect), queue (queue), It may be composed of a scheduler (scheduler), a copy (copy), and a traffic monitor. MAC learning, VLAN control, path control, bandwidth control, priority control, delay control, and copy may not be provided, and equivalent processing may be realized by a combination of basic processing. Further, the order may be changed.

  In the main function of the L2 main signal processing function unit 340, when processing of 10 Gbit / s / λ and 2.5 Gbit / s / λ is performed for each wavelength, 10 Gbit / s / λ and 2.5 Gbit / s / λ, respectively. If the above stream processing processes a plurality of wavelengths, a plurality of wavelengths are obtained.

  FIG. 14 is a diagram illustrating a first example of a functional configuration included in the maintenance operation function unit 330. As the processing that constitutes the maintenance operation function of the maintenance operation function unit 330, ONU, OSU, OLT, or SW device setting (manual, batch, automatic, operation trigger), setting backup, FW update, device control (reset), redundancy It has a configuration correspondence. These processes may be composed of CLI-IF, device management IF, operation IF, general-purpose Config (config) -IF (NETCONF, SNMP, etc.), and table management, which are basic processes. Equivalent processing may be realized by a combination of basic processing without providing device setting, setting backup, FW update, device control, and redundant configuration support. Further, the order may be changed.

  The main function of the maintenance operation function unit 330 is within 100 milliseconds from receiving an instruction until ACK transmission, and within 200 milliseconds from receiving the instruction until transmission completion notification transmission (however, setting backup and data update including data transfer are It is required to comply with regulations such as scale (size / number of users). As an example of function sharing, it is possible to use an application except for a hardware Config, and to use an application on the external server 16 in FIG. 8 without having software or setting data in the ONU or OLT. It can also be realized by unifying commands and defining sequences.

  FIG. 15 is a diagram illustrating a second example of the function configuration of the maintenance operation function unit 330. The processing that constitutes the functions of the maintenance operation function unit 330 includes apparatus state monitoring (CPU / memory / power supply / switching), traffic monitoring, alarm monitoring (ONU abnormality, OLT abnormality), and test (loopback). These processes may comprise basic processes of alarm notification, log recording, L3 packet generation / processing, and table management. Device status monitoring, traffic monitoring, alarm monitoring, and testing may be realized by combining the same processing with basic processing. Further, the order may be changed.

  The main function of the maintenance / operation function unit 330 is required to comply with a regulation such as a latency of 100 milliseconds or less. As an example of function sharing, only the notification / display IF is an application, and items that need to be monitored (CPU load, memory usage, power supply status, power consumption, Ethernet link status, etc.) are device-dependent units Further, it is also possible to perform processing by an application that can clear the IF, such as notification reading from the device dependent unit, network (NW) transmission of notification, and writing to a file.

  FIG. 16 is a diagram illustrating a third example of the functional configuration of the maintenance operation function unit 330. As a process constituting the maintenance operation function of the maintenance operation function unit 330, high-speed monitoring / control input / output (sleep instruction / response, λ setting switching instruction / response, etc.) is provided. As means for this processing, a physical layer OAM (PLOAM: Physical Layer OAM) message and a bit display (Embedded OAM) in the header are used. These processes may include basic processes such as PLOAM processing, embedded OAM processing, communication with the power saving control function unit 360, communication with the protection function unit 380, and communication with the PON access control function unit 320. High-speed monitoring / control input / output may be realized by combining the same processing with basic processing. Further, the order may be changed. The main functions of the maintenance / operation function unit 330 are required to comply with regulations such as setting the PLOAM processing within 750 microseconds.

  FIG. 17 is a diagram illustrating an example of a functional configuration of the PON multicast function unit 350. The processing that constitutes the PON multicast function of the PON multicast function unit 350 includes identification or distribution of multicast streams, MLD proxy / snooping, ONU filter setting, and transition between wavelength settings. These processes may include basic processes such as L2 identification / distribution, L3 packet processing (preferably provided with IPv6 Parse), L3 packet generation, table management, and communication with the OMCI function. Multicast stream identification or distribution, MLD proxy / snooping, ONU filter setting, and inter-wavelength setting transition may be realized by a combination of basic processes. Further, the order may be changed.

In the main function of the PON multicast function unit 350, when the identification / distribution processing is 10 Gbit / s / λ and 2.5 Gbit / s / λ for each wavelength, 10 Gbit / s / λ and 2.5 Gbit / s, respectively. If the stream processing of / λ or more processes a plurality of wavelengths, a plurality of wavelengths are obtained. Further, in the main function of the PON multicast function unit 350, it is required that the zapping performance (Zapping performance) (JOIN latency) conforms to a rule such as an average of 1.5 seconds or less as packet processing.
As an example of the function sharing, the identification and distribution of the multicast (MC) stream can be processed by software if it is a CPU or the like having a high-speed processing capability, but hardware + config is desirable. In addition, the application system and ONU setting for uplink are processing by the application because the frequency and delay restrictions are loose.

FIG. 18 is a diagram illustrating an example of a functional configuration of the power saving control function unit 360. The processing that constitutes the functions of the power saving control function unit 360 includes sleep proxy / traffic monitoring, ONU wavelength setting, and transition between wavelength settings. These processes may be composed of basic processes such as L3 packet processing (preferably with IPv6 Parse), L3 packet generation, table management, OSU power saving state diagram (SD: State Diagram), and communication with the OMCI function. Good. The sleep proxy / traffic monitor, ONU wavelength setting, and inter-wavelength setting transition may be realized by a combination of basic processes. Further, the order may be changed.
In this main function, it is required to comply with regulations such as transmission / reception rise time (receiver / transmitter) of 10 milliseconds / 5 milliseconds and rise time (LC / OSU / OLT) of 100 milliseconds / 1 second / 10 seconds. It is done.

  As an example of function sharing, a power save (PS: Power Save) application, or depending on a signal, proxy processing or application processing can be performed. The power saving control state transition management (driver unit) requires speed, but can also be processed by an application. For the traffic monitor, only the configuration can be processed by the application.

  FIG. 19 is a diagram illustrating an example of a functional configuration of the frequency / time synchronization function unit 370. The OLT subordinately synchronizes its own real-time clock (RTC) to the host device by SyncE (Synchronous Ethernet (registered trademark)) (for frequency synchronization) and IEEE 1588v2 (time synchronization). Further, the correspondence between the PON super frame counter (SFC) and the absolute time (ToD: Time of Day) information is notified to the ONU using OMCI. These processes may be configured by holding a real-time clock, which is a basic process. Equivalent processing may be realized by a combination of basic processing. Further, the order may be changed.

  In this main function, frequency synchronization accuracy +/− 50 ppb (LTE FDD, TDD), time synchronization accuracy +/− 1 to 1.5 microseconds (LTE TDD, small cell), +/− 1 microsecond (G. It is required to comply with regulations such as 987.3). As an example of function sharing, the real-time clock itself is a device-dependent unit, and the time adjustment calculation to the host device can be processed by an application (it can also be a device-dependent unit depending on accuracy).

  FIG. 20 includes redundant switching (CT, SW, NNI, CONT, PON (Type A, B, C)) as a process constituting the protection function of the protection function unit 380. These processes may be composed of basic processes such as redundant path setting, switching trigger detection, switching notification transmission / reception, switching processing, and the like. Equivalent processing may be realized by a combination of basic processing. Further, the order may be changed.

  In this main function, forced switching is required to comply with regulations such as 50 milliseconds or less. As an example of function sharing, processing by an application can be performed except for hardware switching trigger detection and switching processing such as failure detection. When a redundant path is not set in advance and an instruction is given to (from) the EMS when a switching trigger is detected, it is device-dependent.

  The main 8 functions may be provided as necessary. For example, only the PON main signal processing function, the PON access control function, the L2 main signal processing function, the maintenance operation function may be provided, or other functions may be provided. May be. Further, the evaluation of whether each function can be softwareized is an example on the assumption that the processing capability of the OLT assumed in 2018 and the application of the soft switch are not assumed. It may be changed as appropriate assuming an assumed processing capacity and application of a soft switch. Even a function that can be softened may not be softened. The internal configuration of each function may be another configuration as long as the same function can be realized.

Algorithms included in the main 8 functions are defined as main software areas. The function as the software area is assumed to be a device-independent application 130 on the device-independent API 21. For example, algorithms in the ONU registration or authentication function, DWBA function, setting / management / monitoring control function, and power saving control function that contribute to the differentiation service are treated as an extended function unit in the device-independent application 130. The MLD proxy application includes a multicast function.
The extended function unit is an extended function unit depending on the importance of the update frequency of the function, the realization of the original specification, and the like. It is preferable to use middleware other than the basic function unit 132 and the device-independent application 130, device-dependent software, a hardware unit, and a hardware unit that have a low update frequency or a low requirement for realizing a unique specification or the like. In particular, it is preferable to leave the hardware part and the hardware part for functions that are limited by the processing capability of the software. For example, a function that contributes to service differentiation or a high frequency of renewal such as DBA to improve main signal priority processing and line usage efficiency, or management that is closely related to the operator's work flow and requires unique specifications for each operator From the control function to the extended function section.

  The information processing unit is not limited to these software functions, and may have other software functions. A hardware part and a hardware part are not restricted to a transmission / reception part, OSU, a switch, a control part, and an information processing part. For example, the information processing unit may be included in a transmission / reception unit, an OSU, a switch, or a control unit. As shown in FIG. 8, a proxy unit or an external server that processes signals input to and output from the switch may be provided on the NNI (Network-Network Interface) side of the switch. The external server may have an information processing function called a so-called cloud such as a data center including a plurality of devices.

  Each function may be appropriately arranged according to a request for processing capability or processing delay. The OSU may include the switch unit 12 or the switch unit 13, or may include a switch (the switch unit 12 in the case of including the switch unit 13) separately from the switch. It is desirable that the switch functions are appropriately shared according to the processing capacity of the switch without overlapping between the switch unit 12 and the switch unit 13, but may be overlapped.

  The place where the softening function is provided is not limited to the information processing unit, and may be provided at a place where a plurality of arithmetic processes can be performed. For example, the location where the softwareization function is deployed is other than the transmission / reception unit, the OSU switch, the OSU switch, the OLT control unit, the OLT switch, the OLT information processing unit, the OLT switch, the control unit, and the information processing unit. Either a proxy unit that processes signals input to or output from the switch on the NNI side of the switch or a processing device such as an external server may be used.

  Further, the arrangement of the softening function may be arranged for each softening function, or may be a part of the softening function obtained by dividing a single softening function. For example, the part related to the transmission / reception unit other than the transmission / reception unit, for example, the switch of the OSU, the transmission / reception unit of the OSU and other than the switch, the switch of the OLT, the control unit of the OLT, the information processing unit of the OLT, It may be deployed somewhere or a combination of a plurality of deployment locations such as a proxy unit and an external server on the main signal path outside the OLT. Items related to PON termination other than PON termination processing deployment locations, for example, OSU transmission / reception unit, OSU switch, other than OSU transmission / reception unit and other than switch, OLT switch, OLT control unit, OLT information processing unit Other than that of the OLT, the proxy unit may be deployed outside the OLT, or on a combination of a plurality of deployment locations such as a proxy unit or an external server on the main signal path.

Items related to ONU switches other than ONU switches, for example, transmission / reception unit, other than OSU transmission / reception unit and other switches, OLT switch, OLT control unit, OLT information processing unit, other than OLT, OLT It may be deployed somewhere on the main signal path outside the network such as a proxy unit, an external server, or a combination of a plurality of deployment locations. OLT switches related to OLT switches other than OLT switches, for example, transmission / reception unit, OSU switch, other than OSU transmission / reception unit and other switches, OLT control unit, OLT information processing unit, other than OLT, OLT It may be deployed somewhere on the main signal path outside the network such as a proxy unit, an external server, or a combination of a plurality of deployment locations.
Further, the location where the softening function is deployed may be changed as appropriate according to the status of deployment of the extended function unit, the computing capacity of the location where computation is possible, the computation load, power consumption, and the like.

The main functions related to the main signal processing of the OLT and the relationship between the functions will be described. The OLT function is transferred to the switch. A PON main signal processing function for performing PON section processing such as a PHY adaptation function, a framing function, and a service adaptation function is provided in the transmission / reception unit. PON access control functions such as ONU registration or authentication function, DBA control function, and DWA function are provided in the information processing unit. The switch is provided with L2 main signal processing functions such as VLAN control used in framing, priority control in the previous stage of the shaper, Max or Demux (MuX / Dmux) and queue, and a shaper in the previous stage of framing.
A multicast function such as a copy function at the front stage of the shaper and an MLD proxy used for copying is provided in the switch. In this way, the PON basic function unit 132 is reduced by deploying the PON main signal processing function and the PON access control function that have been deployed in the PON to the switch. In particular, it is preferable that the L2 main signal processing is provided in the switch while avoiding duplication.

In addition, as an example of the function of the switch, Classifier (Classifier), Modifier (Modifier), Policer / Shaper (Policer / Shaper), Cross Connect (Cross Connect), Queue (Queue), Scheduler (Scheduler) However, you may change suitably. For example, in the upstream direction, if processing is not performed in the bandwidth allocation unit, the input from the ONU is removed from the preamble and burst overhead for burst transmission, the frame is decapsulated, the LLID is removed, and the PON The terminal may be used only for termination, and all functions of Classifier, Modifier, Policer / Shaper, Cross Connect, Queue, and Scheduler may be implemented by the switch, or only Modifier, Cross Connect, Queue, and Scheduler may be implemented by the switch.
Furthermore, if a VID or the like describing the path after the PON termination is assigned by the ONU, Cross Connect, Queue, or Schedule may be used. If the host network can be regarded as a single path, it may be Queue or Scheduler. Further, if DBA is performed so that the frames do not collide with each other in the cross connect, the classifier, modifier, policer / shaper, and cross connect can be obtained. Furthermore, if it is in the upstream direction and processing is not performed in the bandwidth allocation unit, the input from the ONU is removed from the preamble and burst overhead for burst transmission, the frame is decapsulated, the LLID is removed, and the PON If only the terminal is attached and a VID or the like describing the path after the PON terminal is assigned by the ONU, only the Cross Connect can be provided.

  Also, Classifier, Modifier, Policer / Shaper, Cross Connect, Queue, Scheduler, Classifier, Policer / Shaper, Modifier, Cross Connect, Queue, Scheduler can be placed in the qua Modifier, Queue, Policer / Shaper, Cross Connect, and Scheduler may be used, or Classifier, Queue, Polymer / Shaper, Modifier, Cross Connect, and Scheduler may be used. In consideration of unnecessary Policing / Shaping due to burst transmission caused by PON burst transmission and multiplexing of priority traffic such as multicast, and reception of leveled traffic on the receiving side, Policer / Shaper It is desirable to execute processing by Policing / Shaping after leveling with Queue in the previous stage.

(Embodiment 1-2)
In the embodiment 1-1, the configuration used for the TWDM-PON is illustrated, but may be applied to the TDM-PON. The TDM-PON is the same as the embodiment 1-1 except that it does not have to have a function of wavelength division multiplexing wavelength resources in the PON section of the ONU-OLT during the ONU, such as λ setting switching (DWA). It is.

(Embodiment 1-3)
In the embodiment 1-1, the configuration used for the TWDM-PON is exemplified, but the configuration may be applied to the WDM-PON. In the WDM-PON, except that the function of time-division multiplexing the bandwidth resources of the PON section of the ONU-OLT between the ONUs such as the DBA is not required, the embodiment 1-3 is the embodiment 1-1. It is the same.

(Embodiment 1-4)
This embodiment is a combination including OFDM (Orthogonal Frequency Division Multiplex) -PON, CDM (Code Division Multiplex) -PON, SCM (Subcarrier Multiplex) -PON, and core division multiplexing.

  In the embodiment 1-1, the configuration used for the TWDM-PON is exemplified, but it may be applied to a PON sharing resources other than the wavelength and time. For example, the present invention may be applied to OFDM-PON that divides and multiplexes one-wavelength electric frequency resources, SCM-PON that divides and multiplexes one-wavelength electric frequency resources, and CDM-PON that divides and multiplexes codes. Multiplexing may be used together, spatial division multiplexing using a multi-core fiber or the like may be used together, or wavelength division multiplexing may not be used. It is the same if the function of wavelength division multiplexing the wavelength resource of the TWDM-PON is replaced with a function corresponding to a function required for division multiplexing to each resource to be multiplexed.

(Embodiment 2)
In the second embodiment, the configuration used for TWDM-PON performs GEM encapsulation. In this case, an adapter for generating a GEM frame is provided in the switch so that the GEM frame is conducted between the switch and other portions. By transferring to the switch until the GEM encapsulation, the L2 function unit can be excluded from the protocol stack of the other part, and the L2 function unit can be prevented from being overlapped by the switch and the other part.

  Although TWDM-PON is used as an example, as in Embodiment 1-2 to Embodiment 1-4, if the frame for identification in the PON section is handled in the same manner, the same applies to other PONs. The effect is obtained. For example, in the case of IEEE standard GE-PON, 10GE-PON, etc., instead of a GEM frame, an LLID is added so that the frame with the LLID is connected between the switch and the other parts. That's fine.

(Embodiment 3)
In the third embodiment, control information used for TWDM-PON passes through a switch. In this case, instead of transferring the bridge function related to the switch, any one of PLOAM, Embedded OAM, and OMCI holding control information is framed as necessary and processed via the switch. By inputting and outputting control information via a switch, there is an effect that processing other than the switch is lightened. In addition to the transfer of the third embodiment, transfer to the bridge function switch of the first and second embodiments may be performed.
Although TWDM-PON is given as an example, if control information is handled in the same manner and processed via a switch, the same applies to other PONs as in Embodiment 1-2 to Embodiment 1-4. An effect is obtained.

  You may make it implement | achieve at least one part of the communication apparatus in embodiment mentioned above with a computer. In that case, a program for realizing this function may be recorded on a computer-readable recording medium, and the program recorded on this recording medium may be read into a computer system and executed. Here, the “computer system” includes an OS and hardware such as peripheral devices. The “computer-readable recording medium” refers to a storage device such as a flexible medium, a magneto-optical disk, a portable medium such as a ROM and a CD-ROM, and a hard disk incorporated in a computer system. Further, the “computer-readable recording medium” is a program that dynamically holds a program for a short time, like a communication line when a program is transmitted via a network such as the Internet or a communication line such as a telephone line. In this case, a volatile memory inside a computer system serving as a server or a client in that case may be included and a program held for a certain period of time. Further, the program may be for realizing a part of the functions described above, and may be a program capable of realizing the functions described above in combination with a program already recorded in a computer system. You may implement | achieve using programmable logic devices, such as FPGA (Field Programmable Gate Array).

  As mentioned above, although embodiment of this invention has been explained in full detail with reference to drawings, a concrete structure is not restricted to this embodiment. The above embodiments are merely examples, and the present invention can be implemented in various modifications and improvements based on the knowledge of those skilled in the art, and includes designs and the like that do not depart from the gist of the present invention. .

DESCRIPTION OF SYMBOLS 11 ... Transmission / reception part, 12, 13 ... Switch part, 14 ... Control part, 15 ... Proxy part, 16 ... External server, 21, 22, 27 ... Equipment independent API, 23, 24, 25 ... Equipment dependent API

Claims (6)

Parts that constitute the device and exchange information with the outside of the device;
A path that is provided inside the apparatus and that allows information to be exchanged with the outside of the apparatus as an independent apparatus from the outside of the apparatus with respect to the component or from the component to the outside of the apparatus, or as a component within the apparatus itself;
A communication device comprising:   2. The apparatus according to claim 1, further comprising a proxy unit that transmits information on a component that transmits and receives the information from outside the device or to the outside of the device or blocks information on other components from the outside of the device or to the outside of the device. Communication device.   The apparatus further comprises an assigning unit that assigns unique identification information outside the device such as an identifier, a path, or a combination thereof that can specify a part that exchanges information with the outside of the device outside the device or in a network including the device. The communication device described.   Assign identification information unique to the outside of the device, such as an identifier or a path or a combination thereof that can identify a component that exchanges information with the outside of the device, or within the network that includes the device, convert the identification information of the component, The communication apparatus according to claim 2, further comprising a conversion unit that converts the identification information of the component so that the identification information is unique within a network including the apparatus. A method for designing a communication device having a function as a component,
Components that constitute the device and exchange information with the outside of the device, and are provided inside the device. The device is independent of the device from the outside of the device or from the component to the outside of the device. A method for designing the communication device using a path that enables information to be exchanged.   The communication program for functioning a computer as each function part with which the communication apparatus as described in any one of Claim 1 to 4 is equipped.

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