JP2013251805A - Optical network unit and remote management method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical network unit (ONU) and a remote management method, in which a power supply system can be efficiently operated.SOLUTION: The system includes: an ONU that transmits and receives information about the power supply system of the ONU itself with an OLT; and the OLT that can transmit and receive information about the power supply system of the opposite ONU. This configuration allows a remote monitoring for the ONU having a plurality of power supply systems.

Description

  The present invention relates to a subscriber line network apparatus having a plurality of power feeding mechanisms and a remote monitoring method thereof.

  FIG. 1 is a diagram showing a point-to-multipoint optical subscriber system. The optical subscriber system as shown in FIG. 1 is sometimes called a PON (Passive Optical Network) (see, for example, Non-Patent Document 1). 1 includes an upper network N, user terminals TP-1, TP-2,..., TP-N, optical fiber F, optical splitter S, OLT1, and ONUs 2-1 and 2-2,. .. composed of 2-N. The OLT 1 is connected to the ONUs 2-1, 2-2, ..., 2-N in a point-to-multipoint manner.

  When operating the optical subscriber system, the maintenance person operates the maintenance terminal and performs ONU remote setting and remote monitoring via the OLT in order to grasp the ONU status, that is, the ONU body and the communication status to be transmitted and received. can do. On the other hand, the maintenance person can grasp only whether the power is being supplied or not, that is, only the ON / OFF state of the power supply. Here, the OLT is installed on the telecommunications carrier side, can normally supply power of 100 V or 48 V, and can be supplied from a plurality of power supply systems. However, the ONU has not been mounted so as to supply power from a plurality of systems in consideration of the reduction in apparatus cost and the relatively stable supply of commercial power. There is also a technique of replacing a commercial power supply with a battery or the like when the supply is interrupted for some reason (see, for example, Non-Patent Document 2).

Technology Basic Course “GE-PON Technology”, NTT Technical Journal, 2005.8, pp71-74 Optical Mobile Battery HMB-10 Instruction Manual

  In the prior art, the ONU has only one system of power supply, and when the power supply is cut off, it is necessary to reconnect the spare battery on the user side. Moreover, since there is only one power supply system, the maintenance person cannot know remotely whether the supply source is a commercial power supply or a battery. For this reason, there has been a problem that a telecommunications carrier has an inefficient operation such as confirming a power supply system through an inquiry when receiving a power failure report from a user.

  Accordingly, in order to solve the above-described problems, an object of the present invention is to provide a subscriber line network unit (ONU) and a remote management method that enable efficient operation with respect to a power supply system.

  In order to achieve the above object, the present invention has a plurality of power inputs for power supply in the ONU, and the current power supply system between the ONU and the OLT in order to monitor and manage the power supply system. It was decided to send and receive information about.

  Specifically, the ONU according to the present invention is an ONU connected to the user side of the PON, and includes a plurality of connectors to which power is supplied, and a power management function unit that manages the relationship between the connectors and the power supply. And a signal processing unit that transmits and receives a signal related to power supply between the OLT and the OLT connected to the upper network side of the PON, and allows the relationship between the connector and the power supply to be controlled by the OLT.

  In the remote management method according to the present invention, a signal relating to power supply is transmitted and received between an OLT connected to the upper network side of the PON and an ONU connected to the user side of the PON, and a plurality of connectors and power supplies provided in the ONU The relationship with supply is managed by the OLT.

  The system configuration according to the present invention is a system including an ONU that performs transmission / reception of information regarding its own power supply system with the OLT and an OLT that enables transmission / reception of information regarding the power supply system regarding the opposite ONU. According to this configuration, it is possible to remotely monitor an ONU having a plurality of power supply systems.

  As described above, the present invention can provide an ONU and a remote management method that enable efficient operation with respect to a power supply system.

  When there is an inquiry from the OLT, the power management function unit of the ONU according to the present invention acquires information on which connector is supplied with power and transmits the information to the OLT. In the remote management method according to the present invention, when an inquiry is made from the OLT, information on which connector is supplied with power is acquired, and the information is transmitted to the OLT. It can be confirmed which power is currently supplied to the ONU from the OLT side.

  The power management function unit of the ONU according to the present invention transmits the change of the connector to the OLT as an alarm when the connector supplied with power is changed. In the remote management method according to the present invention, when the connector supplied with power is changed, the change of the connector is transmitted as an alarm to the OLT. The OLT can recognize that the power source has been changed in the ONU.

  The power management function unit of the ONU according to the present invention enables or disables the power supply for each connector according to the selection request when the selection of the connector is received from the OLT. In the remote management method according to the present invention, when there is a connector selection request from the OLT, the power supply is validated or invalidated for each connector according to the selection request. It is possible to set which power source drives the ONU from the OLT side.

  The present invention can provide an ONU and a remote management method that enable efficient operation with respect to a power supply system.

It is a figure which shows a point-to-multipoint optical subscriber system. It is a figure which shows the optical subscriber system containing ONU which concerns on this invention. It is a flowchart explaining the remote management method which concerns on this invention. It is a flowchart explaining the remote management method which concerns on this invention. It is a flowchart explaining the remote management method which concerns on this invention.

  Embodiments of the present invention will be described with reference to the accompanying drawings. The embodiments described below are examples of the present invention, and the present invention is not limited to the following embodiments. In the present specification and drawings, the same reference numerals denote the same components.

  FIG. 2 is a diagram showing an optical subscriber system including the ONU 2 of the present embodiment. The optical subscriber system of FIG. 2 includes a control terminal TC, a user data information terminal TP, an optical fiber F, an optical splitter S, an OLT 1 and an ONU 2.

  The ONU 2 has a plurality of systems of power supply mechanisms, and is equipped with a monitoring means for determining from which system power is supplied. The ONU 2 performs transmission / reception of information regarding its own power supply system with the OLT 1. The OLT 1 enables transmission / reception of information related to the power supply system related to the opposing ONU 2. The optical subscriber system in FIG. 2 transmits and receives information about the current power supply system of the ONU 2 between the ONU 2 and the OLT 1. As a result, the communication carrier can efficiently obtain information on the power supply system of the user's device without having to ask for an inquiry when receiving a failure report related to the power supply from the user.

A specific configuration of the ONU 2 will be described. ONU2
A plurality of connectors (C1, C2,... CN) to which power is supplied;
A power management function unit 22 for managing the relationship between the connector and power supply;
A signal processing unit 27 that transmits and receives a signal related to power supply to and from the OLT 1 so that the relationship between the connector and the power supply can be controlled by the OLT;
Is provided.
The ONU 2 further includes a PON-IF port 24 connected to the optical fiber F and a UNI port 25 connected to the user terminal TP.

  The signal processing unit 27 includes a common mounting function unit 21 and a PON function unit 23. The common mounting function unit 21 has a function of mutually converting an electric signal and an optical signal.

  The connectors are a connector C1 connected from an AC 100V power source via a power adapter, a connector C2 for connecting a direct current power source from a battery in the house,... Connector CN. The ONU 2 operates by receiving power supply from the connector C1 via a power adapter from a normal AC power source. On the other hand, when the AC power supply becomes unusable, such as during a power failure, the user selects the corresponding connector from among the other connectors (C2, C3,..., CN) in consideration of the connector shape, power supply voltage, etc. It is possible to connect other commercial power sources or batteries.

Example 1
In this embodiment, the ONU 2 is remotely managed by the OLT 1, and when there is an inquiry from the OLT 1, the ONU 2 acquires information on which connector is supplied with power and transmits the information to the OLT 1.

  The operator requests information acquisition regarding the power supply system of the ONU 2 from the OLT 1 via the control terminal TC of the OLT 1. At that time, the ONU 2 receives the request, acquires information about the power supply system in the power management function unit 22 and notifies the OLT 1 of the information. The notified information is transmitted to the operator via the control terminal TC.

FIG. 3 is a flowchart for explaining the remote management method of this embodiment. The movement of each functional unit at this time is as follows.
The OLT 1 transmits the OAM frame, and the PON function unit 23 of the ONU 2 receives the OAM frame (step S31). The PON function unit 23 analyzes the OAM frame (step S32). When the OAM frame relates to the power supply system (YES in step S32), the PON function unit 23 causes the power management function unit 22 to process the contents of the OAM frame (steps S33 to S36). When the OAM frame is not related to the power supply system (NO in step S32), the PON function unit 23 processes the content of the OAM frame in the PON function unit 23 (step S37).

  When the OAM frame is related to information acquisition of the power supply system (YES in step S33), the power management function unit 22 performs power supply system information notification (step S34, step S35). When the OAM frame is not related to the information acquisition of the power supply system (NO in step S33), the power management function unit 22 executes an OLT request that is not the information notification of the power supply system (step S36). The power management function unit 22 causes the PON function unit 23 to create an OAM frame including information on the power supply system (step S34). The PON function unit 23 transmits an OAM frame including information on the power supply system (step S35), and the OLT receives the OAM frame including information on the power supply system.

  With this remote management method, the operator can remotely monitor the power supply system for the ONU 2.

  The “OAM frame” is, for example, Organization Specific OAMPDU (extended OAM) defined by Clause 57 of the IEEE 802.3ah standard. This extended OAM is permitted to be independently extended by each operator, and can be defined and used independently for maintenance purposes.

(Example 2)
In this embodiment, the ONU 2 is remotely managed by the OLT 1, and when the connector supplied with power is changed, the ONU 2 transmits the change of the connector to the OLT 1 as an alarm.

  The ONU 2 monitors the power supply system with the power management function unit 22 and notifies the OLT 1 as alarm information according to the notification setting when there is a change in the power supply system. The notified information is transmitted to the operator via the control terminal TC.

FIG. 4 is a flowchart for explaining the remote management method of this embodiment. The movement of each functional unit at this time is as follows.
When the power supply system is changed, such as from the connector C1 to the connector C2 or from the connector C2 to the connector CN, the power management function unit 22 confirms the state change. (Step S41) At that time, the power management function unit 22 stores the corresponding power system change as alarm information. (Step S42)

  Next, a setting value that defines whether to notify the alarm information to the OLT 1 is confirmed (step S43). When the set value stipulates that the alarm information is notified to OLT 1 (YES in step S44), power supply management function unit 22 causes PON function unit 23 to create an OAM frame including the alarm information. The PON function unit 23 transmits an OAM frame including alarm information (step S45), and the OLT 1 receives the OAM frame including alarm information. When the set value stipulates that alarm information is not notified to OLT 1 (NO in step S44), the remote monitoring process is terminated.

  With this remote management method, the operator can remotely monitor the power supply system for the ONU 2.

(Example 3)
In this embodiment, the ONU 2 is remotely managed by the OLT 1, and when there is a connector selection request from the OLT 1, the power supply is validated or invalidated for each connector according to the selection request.

  The operator controls the validity / invalidity of each power supply system of the ONU 2 from the OLT 1 via the control terminal TC of the OLT 1. At that time, the ONU 2 receives the instruction, sets validity / invalidity of each power supply system in the power management function unit 22, and notifies the OLT 1 of the setting result. The notified setting result is transmitted to the operator via the control terminal TC.

FIG. 5 is a flowchart for explaining the remote management method of this embodiment. The movement of each functional unit at this time is as follows.
The OLT 1 transmits the OAM frame, and the PON function unit 23 receives the OAM frame (step S51). The PON function unit 23 analyzes the OAM frame (step S52). When the OAM frame is related to the power supply system (YES in step S52), the PON function unit 23 causes the power management function unit 22 to process the contents of the OAM frame. (Step S53 to Step S58). When the OAM frame is not related to the power supply system (NO in step S52), the PON function unit 23 processes the contents of the OAM frame in the PON function unit 23 (step S59).

  When the OAM frame relates to the valid / invalid setting of each power supply system (YES in step S53), the power management function unit 22 executes the valid / invalid setting of the power supply system (step S54 to step S57). When the OAM frame is not related to the valid / invalid setting of each power supply system (NO in step S53), the power management function unit 22 executes a request for OLT1 that is not valid / invalid setting of each power supply system (step S58). .

  When the OAM frame relates to the activation of the power supply system (YES in step S54), the power management function unit 22 validates the corresponding connector (C1, C2,... CN) (step S55). When the OAM frame is related to invalidation of the power supply system (NO in step S54), the power management function unit 22 invalidates the corresponding connector (C1, C2,... CN) (step S56).

  The power management function unit 22 causes the PON function unit 23 to create an OAM frame including the setting result. The PON function unit 23 transmits an OAM frame including the setting result (step S57), and the OLT 1 receives the OAM frame including the setting result.

  With this remote management method, the operator can remotely operate the power supply system for the ONU 2.

  The remote management methods described in the first to third embodiments can be combined. The optical subscriber system combining these performs remote monitoring, remote setting, and remote control related to the power supply system of the ONU, and enables efficient operation of the ONU having a plurality of power supply mechanisms. As a result, when the operator receives a power failure report from the user, it is possible to grasp the power supply status from a remote location without inquiring about the status using a telephone or other means. Can contribute to the response.

1: OLT
2, 2-1, 2-2, ..., 2-N: ONU
21: common mounting function unit 22: power management function unit 23: PON function unit 24: PON-IF port 25: UNI port 27: signal processing units C1, C2,..., CN: connector F: optical fiber N: host Network S: Optical splitter TC: Control terminals TP, TP-1, TP-2,..., TP-N: User terminal

Claims (8)

A subscriber line network unit (ONU) connected to the user side of the PON,
A plurality of connectors to which power is supplied;
A power management function unit for managing the relationship between the connector and the power supply;
A signal processing unit that transmits and receives a signal relating to power supply to and from an optical subscriber line terminating device (OLT) connected to the upper network side of the PON, and enables the OLT to control the relationship between the connector and the power supply; ,
ONU with. The power management function unit
2. The ONU according to claim 1, wherein when there is an inquiry from the OLT, information on which of the connectors is supplied with power is acquired and the information is transmitted to the OLT. The power management function unit
The ONU according to claim 1, wherein when the connector supplied with power is changed, the change of the connector is transmitted to the OLT as an alarm. The power management function unit
4. The ONU according to claim 1, wherein, when there is a request for selecting the connector from the OLT, power supply is validated or invalidated for each connector according to the selection request. 5. .   Signals relating to power supply are transmitted and received between the OLT connected to the upper network side of the PON and the ONU connected to the user side of the PON, and the relationship between the plurality of connectors provided in the ONU and the power supply is managed by the OLT. Remote management method to do.   The remote management method according to claim 5, wherein when there is an inquiry from the OLT, information on which of the connectors is supplied with power is acquired and the information is transmitted to the OLT.   The remote management method according to claim 5 or 6, wherein when the connector supplied with power is changed, the change of the connector is transmitted to the OLT as an alarm.   8. The remote according to claim 5, wherein when there is a request for selecting the connector from the OLT, the power supply is validated or invalidated for each connector in accordance with the selection request. Management method.

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