WO2011144388A1 - Method and apparatuses for performing network functions in a passive optical network - Google Patents

Method and apparatuses for performing network functions in a passive optical network Download PDF

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Publication number
WO2011144388A1
WO2011144388A1 PCT/EP2011/055631 EP2011055631W WO2011144388A1 WO 2011144388 A1 WO2011144388 A1 WO 2011144388A1 EP 2011055631 W EP2011055631 W EP 2011055631W WO 2011144388 A1 WO2011144388 A1 WO 2011144388A1
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WO
WIPO (PCT)
Prior art keywords
network
sided
unit
subscriber
access
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2011/055631
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French (fr)
Inventor
Harald Schmuck
Michael Straub
Thomas Pfeiffer
Jörg Hehmann
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Alcatel Lucent SAS
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Alcatel Lucent SAS
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Filing date
Publication date
Application filed by Alcatel Lucent SAS filed Critical Alcatel Lucent SAS
Priority to US13/695,747 priority Critical patent/US9706275B2/en
Priority to JP2013510534A priority patent/JP5619990B2/en
Priority to KR1020127032890A priority patent/KR101481393B1/en
Priority to CN201180024908.0A priority patent/CN102907043B/en
Publication of WO2011144388A1 publication Critical patent/WO2011144388A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06—Management of faults, events, alarms or notifications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/0079—Operation or maintenance aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/009—Topology aspects

Definitions

  • the invention relates to a method for performing network functions for a subscriber-sided network access unit in a telecommunication's access network with a central unit, a distribution network, and a multiple of network-sided network termination units with subscriber-sided network access units connected or connectable thereto, in which network a bidirectional communication path is present between the central unit and that network-sided network termination unit, to which the subscriber- sided network access unit under consideration is connected.
  • the invention further relates to a telecommunication's access network with a central unit, a distribution network, and a multiple of network-sided network termination units with subscriber-sided network access units connected or connectable thereto, in which network a bidirectional communication path is present between the central unit and that network-sided network termination unit, to which the subscriber-sided network access unit under consideration is connected.
  • the invention further relates to a central unit for a telecommunication's access network with a central unit, a distribution network, and a multiple of network-sided network termina- tion units with subscriber-sided network access units connected or connectable thereto, in which network a bidirectional commu- nication path is present between the central unit and the network-sided network termination unit.
  • the invention further relates to a network-sided network ter mination unit for a telecommunication's access network with a central unit, a distribution network, and a multiple of network-sided network termination units with subscriber-sided net work access units connected or connectable thereto, in which network a bidirectional communication path is present between the central unit and the network-sided network termination unit.
  • the invention further relates to a subscriber-sided network access unit for a telecommunication's access network with a central unit, a distribution network, and a multiple of network-sided network termination units with subscriber-sided net work access units connected or connectable thereto, in which network a bidirectional communication path is present between the central unit and that network-sided network termination unit, to which the subscriber-sided network access unit is con nected.
  • Both, optical and wireless access networks normally are point-to-multipoint networks.
  • Bach customer has a connection point, where he or she can connect whatever customer premises equipment like simple telephones, servers, or multimedia devices. Such connecting of equipment is being done by the customer himself or herself and can also be changed at whatever time.
  • the invention deals with the problem of providing a method and respective devices to assign a customer premises equipment to a subscriber's data record registered in the central office or other central unit of the network operator.
  • This problem according to the invention is solved by a method for performing network functions for a subscriber-sided network access unit in a telecommunication's access network with a central unit, a distribution network, and a multiple of network- sided network termination units with subscriber-sided network access units connected or connectable thereto, in which network a bidirectional communication path is present between the central unit and that network-sided network termination unit, to which the subscriber-sided network access unit under considera- tion is connected, whereby for performing network functions a further bidirectional communication path between the subscriber-sided network access unit under consideration and the corresponding network-sided network termination unit is used in connection with the bidirectional communication path between the central unit and that network-sided network termination unit .
  • a telecommunication's access network with a central unit, a distribution network, and a multiple of network-sided network termination units with subscriber-sided network access units connected or connectable thereto, in which network a bidirec- tional communication path is present between the central unit and that network-sided network termination unit, to which the subscriber-sided network access unit under consideration is connected, whereby for performing network functions a further bidirectional communication path between the subscriber-sided network access unit under consideration and the corresponding network-sided network termination unit is foreseen in connection with the bidirectional communication path between the central unit and that network-sided network termination unit.
  • a central unit for a telecommunication's access network with a central unit, a distribution network, and a multiple of network-sided network termination units with subscriber-sided network access units connected or connectable thereto, in which network a bidirectional communication path is present between the central unit and the network-sided network termination unit, whereby the central unit includes communication means for operating a bidirectional communication path to a subscriber- sided network access unit via a network-sided network termina- tion unit, to which said subscriber-sided network access unit is connected or connectable.
  • a network-sided network termination unit for a telecommunication's access network with a central unit, a distribution network, and a multiple of network-sided network termination units with subscriber-sided network access units connected or connectable thereto, in which network a bidirectional communication path is present between the central unit and the network-sided network termination unit, whereby the network-sided network termination unit includes communication means for operating a bidirectional communication path to a subscriber-sided network access
  • a subscriber-sided network access unit for a telecommunication's access network with a central unit, a distribution network, and a multiple of network-sided network termination units with subscriber-sided network access unite connected or connectable thereto, in which network a bidirectional communication path is present between the central unit and that network- sided network termination unit, to which the subscriber-sided network access unit is connected, whereby the subscriber-sided network access unit includes communication means for operating a bidirectional communication path to a network-sided network termination unit connectable thereto.
  • the invention adds to the already existing end-to-end (high capacity) communication path between the central office and the subscriber premises equipment and to the also already existing (low capacity) communication path between the central office and the demarcation point unit a further (low capacity) communication path between the demarcation point unit and the subscriber premises equipment.
  • a (low capacity) communica- tion path is provided between the central office and a subscriber premises equipment that can be used for operation and maintenance purposes and is unambiguously assigned to one subscriber premises location.
  • the invention makes use of two circumstances:
  • demarcation point units On the one hand network operators often insist on terminating their network with each customer by a device being separated from any customer's devices and being in their own responsibility. It is known also that such units, then called demarcation point units, also are being unambiguously identifiable from the central office. Such demarcation point units are installed under the responsibility of the network operator, who thus knows the customer in whose location such demarcation point unit is installed.
  • the classical network terminating element called network termination thus is separated into two parts. One part, the optical network termination, physically is terminating the network, but is in the responsibility of the subscriber; the other part, the demarcation point unit, is terminating the responsibility of the operator.
  • Figure 1 shows a telecommunication's access network according to the invention that includes a central unit according to the invention, network-sided network termination units according to the invention, and subscriber-sided network termination units according to the invention, and in which a method for performing network functions according to the invention can be carried out.
  • Figure 2 shows a block diagram of a central unit according to the invention.
  • Figure 3 shows a block diagram of a network-sided network termination unit according to the invention.
  • Figure 4 shows a block diagram of a subscriber-sided network termination unit according to the invention.
  • the invention here is described based on an optical access network as an example. In other networks like wireless access networks the application of this invention is not excluded.
  • the telecommunication's access network illustrated in figure 1 shows three main areas, namely the area of the central office CO, the area of the mere access network AN, and the area of the consumer premises equipment CPE.
  • the equipment in the central office considered here in the optical field commonly is called Optical Line Termination OLT.
  • the optical access network AN mainly consists of optical fibers and optical splitters.
  • active elements like amplifiers or regenerators could be present.
  • PON Passive Optical Network
  • Demarcation Point Device In the area of the consumer premises equipment CPE for each customer we have both, a device in the responsibility and under the sole control of the network operator, called Demarcation Point Device or demarcation point unit DPD, and a device in the responsibility of the customer, commonly called Optical Network
  • Optical Network In addition to the communication paths for the end-to-end communication, here represented by the drawn-through lines, it is already known to have auxiliary bidirectional data paths with low capacity between the optical line termination OLT in the central unit or central office CO and the demarcation point devices DPD in the area of the customer premises equipment.
  • One of which here is depicted as a dashed line and marked as "1".
  • auxiliary data path 2 between the demarcation point device DPD and the optical network termination ONT of this customer or subscriber is shown, also depicted as a dashed line.
  • Both such auxiliary data paths together form an end-to-end auxiliary data path 3, also depicted as a dashed line.
  • this demarcation point unit DPD is under the sole control of the network operator, a clear assignment of this demarcation point unit DPD to a customer premises is given. This can be used to unambiguously assign a customer's equipment to a customer premises. Thus on connecting such equipment, on the network operator's side it is possible to check via this auxiliary data path 3, whether such connecting is compatible with the contract or tariff the customer has with this operator. Equipment connected in such a manner thus will be clearly assigned to such customer by the operator. For further operation between this customer premises equipment and the network operator sub- sequently the "normal" high-capacity end-to-end data path can be used.
  • Such auxiliary data path 2 alone or 3 as a whole can also be used to execute whatever additional functionalities like advanced access functionalities or network functionalities, like - allocating ports, addressee or physical paths within the network, - revoking access authorization in case of malpractice,
  • FIG. 2 shows the optical line termination OLT as mainly including a bidirectional electrical-to-optical interface EOI and a control element Contr.
  • Figure 2 further shows a data line DL, an optical line OL, a path for control data CD, and a path for auxiliary data AD.
  • the network-sided network termination unit or demarcation point device DPD shown in figure 3 mainly includes a passing through optical line OL and a control element uPDP.
  • a laser di ode LD and a photo diode PD connect the control element uPDP via couplers to the optical line OL to send and receive, respectively, auxiliary data AD to and from the optical line ter mination OLT.
  • the control element uPDP according to the inven- tion is adapted to handle data for an auxiliary data path ADP to and from an optical network termination ONT.
  • optical network termination ONT is shown in figure 4. It mainly includes a bidirectional optical-to- electrical interface OEI and a control element uPNT.
  • the bidi- rectional optical-to-electrical interface OEI between an optical line OL and a data line DL has the same functions as and may be built like bidirectional optical-to-electrical interfaces in known optical network terminations.
  • Auxiliary data AD present in the data streams on the optical line OL need not be considered in this bidirectional optical-to-electrical interface OEI. They are dealt with by the control element uPNT, that according to the invention controls the auxiliary data AD coming via the auxiliary data path ADP from the network-sided net- work termination unit or demarcation point device DPD.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)
  • Optical Communication System (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Telephonic Communication Services (AREA)

Abstract

The invention relates to a method for performing network functions for a subscriber-sided (CPE) network access unit (ONT) in a telecommunication's access network with a central unit (CO, OLT), a distribution network (AN), and a multiple of network-sided network termination units (DPD) with subscriber- sided network access units (ONT) connected or connectable thereto, in which network a bidirectional communication path (1) is present between the central unit (CO) and that network- sided network termination unit (DPD), to which the subscriber-sided network access unit (ONT) under consideration is connected, in which for performing network functions a further bidirectional communication path (2) between the subscriber-sided network access unit (ONT) under consideration and the corresponding network-sided network termination unit (DPD) is used in connection with the bidirectional communication path (1) between the central unit (CO, OLT) and that network-sided network termination unit (DPD), as well as to a telecommunication's access network (Figure 1), a central unit (CO, OLT), a network-sided network termination unit (DPD), and a subscriber-sided network access unit (ONT).

Description

METHOD AND APPARATUSES FOR PERFORMING NETWORK FUNCTIONS IN A PASSIVE OPTICAL
NETWORK
Field of the Invention The invention relates to a method for performing network functions for a subscriber-sided network access unit in a telecommunication's access network with a central unit, a distribution network, and a multiple of network-sided network termination units with subscriber-sided network access units connected or connectable thereto, in which network a bidirectional communication path is present between the central unit and that network-sided network termination unit, to which the subscriber- sided network access unit under consideration is connected.
The invention further relates to a telecommunication's access network with a central unit, a distribution network, and a multiple of network-sided network termination units with subscriber-sided network access units connected or connectable thereto, in which network a bidirectional communication path is present between the central unit and that network-sided network termination unit, to which the subscriber-sided network access unit under consideration is connected.
The invention further relates to a central unit for a telecommunication's access network with a central unit, a distribution network, and a multiple of network-sided network termina- tion units with subscriber-sided network access units connected or connectable thereto, in which network a bidirectional commu- nication path is present between the central unit and the network-sided network termination unit.
The invention further relates to a network-sided network ter mination unit for a telecommunication's access network with a central unit, a distribution network, and a multiple of network-sided network termination units with subscriber-sided net work access units connected or connectable thereto, in which network a bidirectional communication path is present between the central unit and the network-sided network termination unit.
The invention further relates to a subscriber-sided network access unit for a telecommunication's access network with a central unit, a distribution network, and a multiple of network-sided network termination units with subscriber-sided net work access units connected or connectable thereto, in which network a bidirectional communication path is present between the central unit and that network-sided network termination unit, to which the subscriber-sided network access unit is con nected.
Background
Both, optical and wireless access networks normally are point-to-multipoint networks. Bach customer has a connection point, where he or she can connect whatever customer premises equipment like simple telephones, servers, or multimedia devices. Such connecting of equipment is being done by the customer himself or herself and can also be changed at whatever time. There is a need to register the used equipment in the central office of the network operator and to unambiguously as sign it to a customer's service contract. To this end it is known that the customer performs a certain procedure, in the course of which a code received from the operator is to be entered. Such registration procedure is time consuming, cumbersome and error-prone. The invention deals with the problem of providing a method and respective devices to assign a customer premises equipment to a subscriber's data record registered in the central office or other central unit of the network operator.
Summary
This problem according to the invention is solved by a method for performing network functions for a subscriber-sided network access unit in a telecommunication's access network with a central unit, a distribution network, and a multiple of network- sided network termination units with subscriber-sided network access units connected or connectable thereto, in which network a bidirectional communication path is present between the central unit and that network-sided network termination unit, to which the subscriber-sided network access unit under considera- tion is connected, whereby for performing network functions a further bidirectional communication path between the subscriber-sided network access unit under consideration and the corresponding network-sided network termination unit is used in connection with the bidirectional communication path between the central unit and that network-sided network termination unit .
This problem according to the invention further is solved by a telecommunication's access network with a central unit, a distribution network, and a multiple of network-sided network termination units with subscriber-sided network access units connected or connectable thereto, in which network a bidirec- tional communication path is present between the central unit and that network-sided network termination unit, to which the subscriber-sided network access unit under consideration is connected, whereby for performing network functions a further bidirectional communication path between the subscriber-sided network access unit under consideration and the corresponding network-sided network termination unit is foreseen in connection with the bidirectional communication path between the central unit and that network-sided network termination unit. This problem according to the invention further is solved by a central unit for a telecommunication's access network with a central unit, a distribution network, and a multiple of network-sided network termination units with subscriber-sided network access units connected or connectable thereto, in which network a bidirectional communication path is present between the central unit and the network-sided network termination unit, whereby the central unit includes communication means for operating a bidirectional communication path to a subscriber- sided network access unit via a network-sided network termina- tion unit, to which said subscriber-sided network access unit is connected or connectable.
This problem according to the invention further is
solved by a network-sided network termination unit for a telecommunication's access network with a central unit, a distribution network, and a multiple of network-sided network termination units with subscriber-sided network access units connected or connectable thereto, in which network a bidirectional communication path is present between the central unit and the network-sided network termination unit, whereby the network-sided network termination unit includes communication means for operating a bidirectional communication path to a subscriber-sided network access
unit connectable thereto. This problem according to the invention further is solved by a subscriber-sided network access unit for a telecommunication's access network with a central unit, a distribution network, and a multiple of network-sided network termination units with subscriber-sided network access unite connected or connectable thereto, in which network a bidirectional communication path is present between the central unit and that network- sided network termination unit, to which the subscriber-sided network access unit is connected, whereby the subscriber-sided network access unit includes communication means for operating a bidirectional communication path to a network-sided network termination unit connectable thereto.
The invention adds to the already existing end-to-end (high capacity) communication path between the central office and the subscriber premises equipment and to the also already existing (low capacity) communication path between the central office and the demarcation point unit a further (low capacity) communication path between the demarcation point unit and the subscriber premises equipment. By this a (low capacity) communica- tion path is provided between the central office and a subscriber premises equipment that can be used for operation and maintenance purposes and is unambiguously assigned to one subscriber premises location.
The use of such communication path of course is not re- stricted to any special use like the unambiguous assignment of equipment .
The invention makes use of two circumstances:
On the one hand network operators often insist on terminating their network with each customer by a device being separated from any customer's devices and being in their own responsibility. It is known also that such units, then called demarcation point units, also are being unambiguously identifiable from the central office. Such demarcation point units are installed under the responsibility of the network operator, who thus knows the customer in whose location such demarcation point unit is installed. The classical network terminating element called network termination thus is separated into two parts. One part, the optical network termination, physically is terminating the network, but is in the responsibility of the subscriber; the other part, the demarcation point unit, is terminating the responsibility of the operator. On the other hand in such cases often exist simple communication protocols for communicating with low capacity between the central office and such demarcation point units independent from the useful communication's paths ending at the subscriber premises equipment. Further embodiments of the invention are to be found in the subclaims and in the following description.
Brief Description of the Figures
In the following the invention will be described with the aid of the accompanying drawings:
Figure 1 shows a telecommunication's access network according to the invention that includes a central unit according to the invention, network-sided network termination units according to the invention, and subscriber-sided network termination units according to the invention, and in which a method for performing network functions according to the invention can be carried out. Figure 2 shows a block diagram of a central unit according to the invention.
Figure 3 shows a block diagram of a network-sided network termination unit according to the invention.
Figure 4 shows a block diagram of a subscriber-sided network termination unit according to the invention.
Description of the Embodiments
The invention here is described based on an optical access network as an example. In other networks like wireless access networks the application of this invention is not excluded.
The telecommunication's access network illustrated in figure 1 shows three main areas, namely the area of the central office CO, the area of the mere access network AN, and the area of the consumer premises equipment CPE. The equipment in the central office considered here in the optical field commonly is called Optical Line Termination OLT.
The optical access network AN mainly consists of optical fibers and optical splitters. In addition thereto also active elements like amplifiers or regenerators could be present. In- dependent from the presence of such active elements such network commonly is called a Passive Optical Network PON.
In the area of the consumer premises equipment CPE for each customer we have both, a device in the responsibility and under the sole control of the network operator, called Demarcation Point Device or demarcation point unit DPD, and a device in the responsibility of the customer, commonly called Optical Network In addition to the communication paths for the end-to-end communication, here represented by the drawn-through lines, it is already known to have auxiliary bidirectional data paths with low capacity between the optical line termination OLT in the central unit or central office CO and the demarcation point devices DPD in the area of the customer premises equipment. One of which here is depicted as a dashed line and marked as "1". According to the invention now a further such auxiliary data path 2 between the demarcation point device DPD and the optical network termination ONT of this customer or subscriber is shown, also depicted as a dashed line. Both such auxiliary data paths together form an end-to-end auxiliary data path 3, also depicted as a dashed line.
As the demarcation point unit DPD is under the sole control of the network operator, a clear assignment of this demarcation point unit DPD to a customer premises is given. This can be used to unambiguously assign a customer's equipment to a customer premises. Thus on connecting such equipment, on the network operator's side it is possible to check via this auxiliary data path 3, whether such connecting is compatible with the contract or tariff the customer has with this operator. Equipment connected in such a manner thus will be clearly assigned to such customer by the operator. For further operation between this customer premises equipment and the network operator sub- sequently the "normal" high-capacity end-to-end data path can be used.
Such auxiliary data path 2 alone or 3 as a whole can also be used to execute whatever additional functionalities like advanced access functionalities or network functionalities, like - allocating ports, addressee or physical paths within the network, - revoking access authorization in case of malpractice,
- temporary access of unknown users to the network, e.g. by using a special access code,
- sending an emergency call from unknown equipment. Even the use of this path for some kind of a short message service is possible.
An example of an optical line termination OLT here representing the central office CO is now described in connection with figure 2. Figure 2 shows the optical line termination OLT as mainly including a bidirectional electrical-to-optical interface EOI and a control element Contr.
Figure 2 further shows a data line DL, an optical line OL, a path for control data CD, and a path for auxiliary data AD.
Apart from the functionality implemented in the control ele- ment Contr there is no difference to an optical line termination OLT in an access network without the additional auxiliary data path 2 (and 3) .
The network-sided network termination unit or demarcation point device DPD shown in figure 3 mainly includes a passing through optical line OL and a control element uPDP. A laser di ode LD and a photo diode PD connect the control element uPDP via couplers to the optical line OL to send and receive, respectively, auxiliary data AD to and from the optical line ter mination OLT. The control element uPDP according to the inven- tion is adapted to handle data for an auxiliary data path ADP to and from an optical network termination ONT.
An example of such optical network termination ONT is shown in figure 4. It mainly includes a bidirectional optical-to- electrical interface OEI and a control element uPNT. The bidi- rectional optical-to-electrical interface OEI between an optical line OL and a data line DL has the same functions as and may be built like bidirectional optical-to-electrical interfaces in known optical network terminations. Auxiliary data AD present in the data streams on the optical line OL need not be considered in this bidirectional optical-to-electrical interface OEI. They are dealt with by the control element uPNT, that according to the invention controls the auxiliary data AD coming via the auxiliary data path ADP from the network-sided net- work termination unit or demarcation point device DPD.

Claims

Claims
1. Method for performing network functions for a subscriber-sided (CPE) network access unit (ONT) in a telecommunication's access network with a central unit (CO, OLT) , a distribution network (AN) , and a multiple of network-sided network termination units
(DPD) with subscriber-sided network access units
(ONT) connected or connectable thereto, in which network a bidirectional communication path (1) is present between the central unit (CO) and that network-sided network termination unit (DPD) , to which the subscriber-sided network access unit (ONT) under consideration is connected, whereby for performing network functions a further bidirectional communication path (2) between the subscriber-sided network access unit (ONT) under consideration and the corresponding network-sided network termination unit
(DPD) is used in connection with the bidirectional communication path (1) between the central unit (CO, OLT) and that network-sided network termination unit
(DPD) .
2. Telecommunication's access network with a central unit (CO, OLT) , a distribution network (AN) , and a multiple of network-sided network termination units (DPD) with subscriber-sided network access units (ONT) connected or connectable thereto, in which network a bidirectional communication path (1) is present between the central unit (CO, OLT) and that network-sided network termination unit (DPD) , to which the subscriber-sided network access unit (ONT) under consideration is connected, whereby for performing network functions a further bidirectional communication path (2) between the subscriber-sided network access unit (ONT) under consideration and the corresponding network-sided network termination unit (DPD) is foreseen in connection with the bidirectional communication path (1) between the central unit (CO, OLT) and that network-sided network termination unit (DPD) .
3. Central unit (CO, OLT) for a telecommunication's access network with a central unit (CO, OLT) , a distribution network (AN) , and a multiple of network- sided network termination unite (DPD) with subscriber-sided network access units (ONT) connected or connectable thereto, in which network a bidirectional communication path (1) is present between the central unit (CO, OLT) and the network-sided network termination unit (DPD) , whereby the central unit (CO, OLT) includes communication means (Contr) for operating a bidirectional communication path (3) to a subscriber-sided network access unit (ONT) via a network-sided network termination unit (DPD) , to which said subscriber-sided network access unit (ONT) is connected or connectable.
4. Network-sided network termination unit (DPD) for . telecommunication's access network with a central unit (CO, OLT) , a distribution network (AN) , and a multiple of network-sided network termination units (DPD) with subscriber-sided network access units (ONT) connected or connectable thereto, in which network a bidirectional communication path (1) is present between the central unit (CO, OLT) and the network-sided network termination unit (DPD) , whereby the network-sided network termination unit (DPD) includes communication means (uPDP) for operating a bidirectional communication path (2, ADP) to a subscriber-sided network access unit (ONT) con- nec able thereto.
5. Subscriber-sided network access unit (ONT) for a telecommunication's access network with a central unit (CO, OLT) , a distribution network (AN) , and a multiple of network-sided network termination units (DPD) with subscriber-sided network access units (ONT) connected or connectable thereto, in which network a bidirectional communication path (1) is present between the central unit (CO, OLT) and that network-sided network termination unit (DPD) , to which the subscriber-sided network access unit (ONT) is connected, whereby the subscriber-sided network access unit (ONT) includes communication means
(uPNT) for operating a bidirectional communication path (2, ADP) to a network-sided network termination unit (DPD) connectable thereto.
PCT/EP2011/055631 2010-05-20 2011-04-11 Method and apparatuses for performing network functions in a passive optical network Ceased WO2011144388A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US13/695,747 US9706275B2 (en) 2010-05-20 2011-04-11 Method and apparatuses for performing network functions in a passive optical network
JP2013510534A JP5619990B2 (en) 2010-05-20 2011-04-11 Method and apparatus for performing network functions in a passive optical network
KR1020127032890A KR101481393B1 (en) 2010-05-20 2011-04-11 Method and apparatuses for performing network functions in a passive optical network
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US9014558B2 (en) * 2012-06-06 2015-04-21 Techsys Insights Client grooming interface
US8989591B2 (en) 2012-06-06 2015-03-24 Techsys Insights Remote optical demarcation point
CN104270286B (en) * 2014-09-19 2018-10-16 北京邮电大学 A kind of SDN network node failure localization method

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US9706275B2 (en) 2017-07-11
KR20130038876A (en) 2013-04-18
US20130045013A1 (en) 2013-02-21
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KR101481393B1 (en) 2015-01-12
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EP2388955A1 (en) 2011-11-23
JP5619990B2 (en) 2014-11-05

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