WO2009006833A1 - Procédés et dispositifs consistant à déterminer le rapport de connexion entre des ports optiques - Google Patents

Procédés et dispositifs consistant à déterminer le rapport de connexion entre des ports optiques Download PDF

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Publication number
WO2009006833A1
WO2009006833A1 PCT/CN2008/071545 CN2008071545W WO2009006833A1 WO 2009006833 A1 WO2009006833 A1 WO 2009006833A1 CN 2008071545 W CN2008071545 W CN 2008071545W WO 2009006833 A1 WO2009006833 A1 WO 2009006833A1
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WO
WIPO (PCT)
Prior art keywords
optical
port
light
connection relationship
signal
Prior art date
Application number
PCT/CN2008/071545
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English (en)
Chinese (zh)
Inventor
Congqi Li
Original Assignee
Huawei Technologies Co., Ltd.
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Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2009006833A1 publication Critical patent/WO2009006833A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
    • 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
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/0073—Provisions for forwarding or routing, e.g. lookup tables
    • 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

Definitions

  • the present invention relates to optical network technologies, and in particular, to a technique for determining a connection relationship between optical ports. Background technique
  • optical devices has greatly promoted the development of optical communication technologies, especially the advancement of Erbium-Doped Optical Fiber Amplifier (EDFA) and optical multiplexing technology, and promoted wavelength division multiplexing (WDM, Wavelength Division Multiplex).
  • EDFA Erbium-Doped Optical Fiber Amplifier
  • WDM Wavelength Division Multiplex
  • DWDM dense fiber wavelength division
  • DWDM Dense Wavelength Division Multiplex
  • a WDM device is composed of a plurality of functional units having different functions.
  • a WDM device may include a main optical channel signal processing unit and an auxiliary signal processing unit.
  • the main optical channel signal processing unit may include an optical signal processing unit of a wavelength level, such as an optical multiplexer, an optical demultiplexer, or an optical add/drop multiplexer that performs operations such as uplink and downlink for the wavelength signal output by the wavelength conversion unit.
  • an optical channel protection unit that performs operations such as protection switching on the wavelength signal; and may further include an multiplex section-level optical signal processing unit, such as an amplifier that amplifies the optical signal of the entire optical multiplex section;
  • a dispersion compensation unit that performs dispersion compensation for the main optical channel signal.
  • the auxiliary signal processing unit may include a line interface signal unit that multiplexes and demultiplexes the monitor signal with the main optical channel signal, and an optical performance monitoring unit that monitors the signal quality of the main optical channel.
  • a person skilled in the art proposes a method for automatically discovering an optical fiber connection, that is, a mechanical sensing device is embedded in a flange of each optical port in all functional units with optical ports of an optical network node, when there is an optical fiber
  • the functional unit can detect that a fiber jumper is inserted into its optical port through the mechanical sensing device, and then the functional unit reports the fiber jumper insertion to the control unit or the network management unit of the optical network node.
  • the event, control unit or network management unit records the fiber jumper insertion event of the functional unit to discover the interconnection of the optical ports to each other.
  • the interconnection relationship between the optical interfaces can be found, for example, under the one-to-one rule, the two optical ports connected When the fiber jumper insertion event is reported, the two optical ports are considered to be connected, and under the one-to-many rule, the first optical port for reporting the fiber jumper insertion event is regarded as the main optical port of the one-to-many. The optical port that reports the insertion of the fiber jumper is then considered to be the optical port, thereby determining the interconnection relationship between the main optical port and the optical port.
  • Embodiments of the present invention provide a method and apparatus for determining a connection relationship between optical ports to provide a feasible technical solution for determining a connection relationship between optical ports.
  • An embodiment of the present invention provides a method for determining a connection relationship between optical interfaces, where the method includes: loading an identifier of the optical wavelength signal or an optical multiplex section signal on each optical port through which an optical wavelength signal or an optical multiplex section signal passes, Detecting an identifier of the optical wavelength signal or the optical multiplex section signal on each optical port through which the optical wavelength signal or the optical multiplex section signal passes; determining according to the result of the identifier detection The connection between the optical entrance and the light exit.
  • the embodiment of the invention further provides a method for determining a connection relationship between optical ports in an optical regenerator section, the method comprising: loading an identifier of an optical wavelength signal or an optical multiplex section signal emitted by an optical signal source, or in a light regeneration section Applying an identifier to the amplified optical wavelength signal or the optical multiplex section signal, and detecting the identifier on each of the optical entrance and the optical outlet in the optical regenerator section of the optical wavelength signal or the optical multiplex section signal; The relationship between the light-emitting port and the light-injecting port is determined by the identifier matching and the power matching relationship between the port and the light-emitting port.
  • the embodiment of the invention further provides a method for determining a connection relationship between optical ports including a plurality of optical regenerator sections, the method comprising: omitting an optical wavelength signal or an optical multiplex section on the optical signal source and the optical regenerator section source And the signal loading identifier is used to detect the loaded identifier in the optical port and the optical port through which the optical wavelength signal or the optical multiplex section signal passes; and determine the optical signal source and the optical regenerator segment source according to the identifier detection result, and The adjacent upstream and downstream relationship between the light regeneration segment sources, and determining the light entrance port and the light exit port group in the same regeneration segment; in the same regeneration segment light entrance port and light exit port group, according to the light exit port and The optical wavelength signal power or the optical multiplex section signal power or the identification power relationship detected by the optical port determines a connection relationship between the optical outlet and the optical entrance.
  • the embodiment of the present invention further provides a device for determining a connection relationship between optical ports, and the device includes: an identifier loading unit, configured to use the optical wavelength signal or the optical wavelength signal on each optical port through which the optical wavelength signal or the optical multiplex section signal passes An optical multiplex section signal loading identifier; an identifier detecting unit, configured to detect, on each optical port through which the optical wavelength signal or the optical multiplex section signal passes, an identifier of the optical wavelength signal or the optical multiplex section signal loading; a determining unit, configured to determine a connection relationship between the light entrance port and the light exit port according to the result of the identifier detection.
  • the embodiment of the invention further provides a determining device for the connection relationship between the optical ports in the optical regenerator section, the device comprising: an identifier loading unit, configured for the optical wavelength signal or the optical multiplexing segment emitted by the optical signal source pair Signal loading identifier, or loading an identifier of the amplified optical wavelength signal or the optical multiplex section signal on the optical regenerator section source; the identifier detecting unit is configured to be used in the optical regenerator section of the optical wavelength signal or the optical multiplex section signal A detection identifier is detected on each of the optical port and the optical port; and the connection relationship determining unit is configured to determine a connection between the optical port and the optical port according to the identifier matching and the power matching relationship between the optical port and the light emitting port. relationship.
  • Embodiments of the present invention also provide a connection relationship between optical ports applied to a plurality of optical regeneration segments.
  • Determining device the device comprising: an identifier loading unit, configured to load an identifier of the passed optical wavelength signal or the optical multiplex section signal on the optical signal source and the optical regenerator section source; and the identifier detecting unit is configured to be at the optical wavelength
  • the upstream and downstream relationship and the optical port group determining unit are configured to determine the optical signal source and the optical regeneration segment source according to the identification detection result Adjacent upstream and downstream relationship between the source and the light regeneration segment source, and determining the light entrance port and the light exit port group in the same regeneration segment; the connection relationship determining unit for the light inlet port and the light exit port group in the same regeneration segment
  • the connection relationship between the light exit port and the light entrance port is determined according to the light wavelength signal power or the optical multiplex section signal power or the
  • the optical wavelength signal or the optical multiplex section signal is loaded with an identifier on each optical outlet, or the optical wavelength signal or the optical multiplex section signal is loaded on the optical signal source or the optical regenerator section source. Marking, whether the light wavelength signal or the signal of the optical multiplex section signal is detected on each light entrance port, or detecting the mark in the light regeneration section, or determining each regeneration section first, and then for each regeneration.
  • the segment detection is technically feasible and has no special requirements for the maintenance operator. Therefore, it can be used to determine the connection relationship between the optical ports, and can also be applied in practice. Illustration
  • FIG. 1 is a flowchart of a method for determining a connection relationship between optical interfaces of the first embodiment of the present invention
  • FIG. 2 is a flowchart of a method for determining a connection relationship between two optical ports according to an embodiment of the present invention
  • It is a flowchart of a method for determining a connection relationship between the third optical ports in the embodiment of the present invention.
  • the method and apparatus for determining the connection relationship between the optical interfaces in the embodiment of the present invention can be used to determine the connection relationship between the optical ports of the optical network node, and can also be used to determine the optical network node.
  • Each of the functional units in the optical network node includes, but is not limited to, an optical network device functional unit, in which the connection between the optical interfaces of the functional units may be performed in succession.
  • the method for determining the connection relationship between the first optical ports may include the following steps: Loading an identifier on the optical wavelength signal or the optical multiplex section signal on each optical port through which the optical wavelength signal or the optical multiplex section signal passes;
  • the connection relationship between the light entrance port and the light exit port is determined.
  • n is an integer greater than 0; and so on, and thus the connection relationship between other optical entrances and other light exits can be determined.
  • Step S101 Each light entrance port determines an upstream light exit port that may have a connection relationship with each other. There are many ways for the optical port to detect the light exit port that may have a connection relationship, as exemplified below.
  • An optical wavelength signal or an optical multiplex section signal may be loaded with an identifier on each optical port.
  • the loading may be performed simultaneously or in a time-sharing manner.
  • the identifier may correspond to the optical port, and the frequency, the spreading code, and the identifier used may be identified.
  • the slot information corresponding to the ID information or the identifier carried by the identifier may also correspond to the light exit port.
  • the optical wavelength signal or the optical multiplex section signal After the optical wavelength signal or the optical multiplex section signal passes through multiple optical outlets, it carries multiple different identifiers.
  • the optical entrance port When an optical wavelength signal or an optical multiplex section signal carrying a plurality of different identifiers reaches an optical entrance port, the optical entrance port performs spectroscopic detection on the optical wavelength signal or the optical multiplex section signal, and demultiplexes all the identifiers. If the result is larger than the system decision threshold, it may be determined that the optical port may have a connection relationship with the optical port. Light exit.
  • an optical wavelength signal or an optical multiplex section signal can pass through multiple optical outlets and reach an optical entrance, and each of the outgoing optical interfaces can load different identifiers into the same optical wavelength signal or
  • the optical multiplex section signal is such that the light entrance port that receives the optical wavelength signal or the optical multiplex section signal can detect a plurality of light exit ports, but not every light exit port has a connection relationship with the light entrance port.
  • each light entrance can detect all the light exit ports upstream thereof, but if there is a wavelength selective functional unit between the upstream light exit port and the light entrance port, the light entrance port is It is not always possible to detect the upstream outlet.
  • Step S102 Summarize the correspondence between each optical port and its detected light exit port that may have a connection relationship with it.
  • the optical port After the optical port is determined to be connected to the optical port, the optical port can be reported to the optical port.
  • the correspondences may be sorted according to the number of light-emitting ports detected by each optical port, for example, in ascending order.
  • Step S103 Select a corresponding relationship between an optical port and only one optical port.
  • an optical port corresponds to only one optical port, it can be said that the optical port has a connection relationship with the optical port. Therefore, if one of the optical ports is selected to correspond to only one light port, Firstly, the connection relationship between an optical entrance and an optical outlet is determined, thereby eliminating some light entrances and light exits for subsequent determination of the connection relationship.
  • Step S104 Delete the light exit port from other correspondences having the light exit port.
  • the other light-emitting ports are in the corresponding relationship, that is, the other light-injecting ports correspond to the light-emitting ports, it may be determined that the light-emitting ports are the upstream light-emitting ports of the light-injecting ports, but are not connected to the light-in ports.
  • the light exit port which has a connection relationship with these light entrance ports, should be some other light exit port in the corresponding relationship. Therefore, if a connection relationship between an light exit port and an light entrance port is determined, the light exit port can be provided from the other The correspondence of this light exit port is deleted.
  • Step S105 It is determined whether there is still a correspondence relationship between one optical port and only one optical port. If yes, the process returns to step S104, otherwise, the process goes to step S106.
  • Step S106 It is judged whether there is an optical entrance port that does not correspond to any one of the light exit ports, and if so, the process goes to step S107, otherwise ends.
  • Step S107 It is determined that the light entrance port is not connected to any light exit port.
  • step S101 if an optical port does not determine that any of the optical ports may have a connection relationship with each other, the following conditions may be determined according to the type of the optical port:
  • the optical port is the optical port of the optical network node and needs to determine the optical port of other optical network nodes that may have a connection relationship with the optical network node, it may be determined that the optical port does not have any optical port of the optical network node. Have a connection relationship;
  • the optical port is the optical port of a functional unit in the optical network node and needs to determine the light exit of other functional units that may have a connection relationship with the optical network node, it can be determined that the optical port does not have any function.
  • the light outlet of the unit has a connection relationship.
  • optical outlet if an optical outlet is not detected by any optical entrance, the following conditions can be determined according to the category of the optical outlet:
  • the light exit port is the light exit port of the optical network node and needs to determine the light entrance port of other optical network nodes that may have a connection relationship with the optical network node, it may be determined that the light exit port does not have any light entrance port of any optical network node.
  • the light exit port is the light exit port of a functional unit in the optical network node and needs to determine the light entrance port of other functional units that may have a connection relationship with the optical network node, it may be determined that the light exit port is not associated with any functional unit.
  • the entrance port has a connection relationship.
  • an optical port does not determine that any of the optical outlets may have a connection relationship with it, or an optical outlet is not detected by any optical entrance, it may also indicate the optical fiber that is connected to the optical inlet or the optical outlet. The jumper has failed.
  • the optical wavelength signal or the optical multiplex section signal may be simultaneously loaded with an identifier on each optical port, or the identifier may be loaded in a time-sharing manner. For the optical port, it is detected within a specified time. By the presence of the identifier, it can be determined that the light outlet corresponding to the identifier is upstream. However, it is considered that the identification may have a certain interference to the optical wavelength signal or the optical multiplex section signal, and if a plurality of identifiers are simultaneously loaded onto the optical wavelength signal or the optical multiplex section signal, the optical wavelength signal or the optical multiplex section signal may be generated to be large. Interference, therefore, if the optical wavelength signal or the optical multiplex section signal is time-divisionally loaded, it is possible to avoid excessive interference with the optical wavelength signal or the optical multiplex section signal when determining the optical port connection relationship, resulting in a bit error.
  • step S106 and step S107 may be performed after steps S101, S102 and S104.
  • steps S101, S102 and S104 may be performed after steps S101, S102 and S104.
  • the first application embodiment is for determining a connection relationship between optical ports of an optical network device functional unit.
  • an optical network node includes a functional unit A, a functional unit ⁇ functional unit C, and a functional unit D.
  • Each functional unit includes an optical entrance 1, an optical entrance 2, an optical entrance 3, an optical outlet 1, and an optical outlet 2;
  • the light exit port 3 of course, the number of light entrance ports of each functional unit may be different from the number of light exit ports, and the number of light entrance ports or the number of light exit ports of each functional unit may also be different. Here, for convenience of description, the number is assumed to be the same. .
  • each optical port detects an optical port that may have a connection relationship with it
  • the correspondence between each optical port and the light port that may have a connection relationship with it is summarized as follows:
  • the corresponding relationship between the light inlet 1 of the functional unit B and the light outlet 1 of the functional unit A is first selected. Since this is a corresponding correspondence, the light inlet 1 of the functional unit B can be determined.
  • the light exit port 1 of the functional unit A has a connection relationship.
  • the light exit 1 of the functional unit A is deleted from the correspondence relationship of the other light outlets 1 having the functional unit A.
  • the light exit 1 of the functional unit A does not appear in other correspondences.
  • the corresponding relationship between the light entrance 2 of the functional unit B and the light exit 2 of the functional unit A is selected. Since this is a corresponding correspondence, the light entrance 2 of the functional unit B and the light output of the functional unit A can be determined.
  • Port 2 has a connection relationship.
  • the light exit port 2 of the function unit A is deleted from the corresponding relationship of the light exit ports 2 of the functional unit A.
  • Table 1 only the light entrance port 1 of the function unit C corresponds to the light exit port 2 of the function unit A, so The light exit port 2 of the functional unit A is deleted from the light exit port set corresponding to the light entrance port 1 of the function unit C.
  • the corresponding relationship between the light-injecting port 1 of the functional unit C and the light-emitting port 3 of the functional unit B is selected. Since this is a corresponding correspondence, the light-emitting port 1 of the functional unit C and the light-emitting port 1 of the functional unit B can be determined.
  • Port 3 has a connection relationship.
  • the light exit port 3 of the functional unit C is deleted from the correspondence relationship of the other light exit ports 3 having the functional unit C.
  • the light exit port 3 of the functional unit C does not appear in other correspondences.
  • the corresponding relationship between the light entrance 3 of the functional unit C and the light exit 2 of the functional unit D is selected. Since this is a corresponding correspondence, the light inlet 3 and the function of the functional unit C can be determined.
  • the light exit port 2 of the energy unit D has a connection relationship.
  • the light-emitting port 2 of the functional unit D is deleted from the corresponding relationship of the light-emitting ports 2 of the functional unit D.
  • Table 1 only the light-in port 2 of the functional unit C corresponds to the light-emitting port 2 of the functional unit D, so the function
  • the light exit port 2 of the unit D is deleted from the light exit port set corresponding to the light entrance port 2 of the function unit C.
  • connection relationship between the functional unit VIII, the functional unit ⁇ functional unit C and the optical port of the functional unit D is determined.
  • the second application embodiment is used to determine the connection relationship between the optical ports of the optical network node. It is assumed that an optical network node A, an optical network node B, an optical network node C, and an optical network node D exist in an optical network or a part of an optical network, and each optical network node includes an optical port 1, an optical port 2, and an optical port. 3. The light exit port 1, the light exit port 2, and the light exit port 3.
  • the number of light entrance ports of each optical network node may be different from the number of light exit ports, and the number of light entrance ports or the number of light exit ports of each optical network node may also be Not the same, here for convenience of description, the number is assumed to be the same.
  • each optical port After each optical port detects an optical port that may be connected to it, the corresponding relationship between each optical port and the optical port that may have a connection relationship with it is as follows: Optical network node Optical port upstream optical port
  • Optical network node B optical port 2 optical network node A light outlet 2
  • Optical network node C light entrance port 1 optical network node A light exit port 2, optical network node B light exit port 3 light entrance port 2 optical network node D light exit port 2, optical network node B light exit port 1 Light entrance 3 Optical network node D light outlet 2
  • optical port of the optical network nodes A and D and the optical port 3 of the optical network node B do not detect any optical port of any optical network node, which indicates that the optical network nodes A and D enter the light.
  • the port and the optical port 3 of the optical network node B are not connected to any optical port of any optical network node.
  • FIG. 1 is only one embodiment of the first method for determining the connection relationship between the optical interfaces in the embodiment. In practical applications, the connection relationship between the optical interfaces in this embodiment The first method of determining may also have a variety of embodiments.
  • the number of the light exit port identifiers detected by the optical port may be sorted; if the number of the detected labels is greater than 1 and the number of pixels is different, the detected signals are compared, if two If the identifiers detected by the optical port are different, the number of the light-injecting ports that have a larger number of detections and the light-emitting ports corresponding to the different identifiers have a connection relationship; The light entrance port is determined to have a connection relationship between the light entrance port and the light exit port corresponding to the identifier. The essence of this method is to randomly find two adjacent optical inlets.
  • the two detected optical interfaces detect one or only one different identifier, then it can be determined that the number of detected optical ports is large. There is a connection relationship between the light exit ports corresponding to the distinct identifiers. This method can be used for all the optical entrances in the sequence until all the optical ports in the sequence find the optical outlets with which they are connected.
  • the number of the optical port identifications detected by the optical port can be sorted.
  • the optical port with the largest number of optical port identifications is found.
  • the optical port is called the optical port. A, and then find the light entrance port that detects that the number of the light exit ports is one less than the number of the light exit ports detected by the optical port A.
  • the light entrance port is called the light entrance port B, where the light entrance port A and the inlet are If the optical port B detects that there is only one distinct identifier, it can be determined that the optical port A is different from this.
  • the corresponding light exit ports have a connection relationship.
  • the light entrance port is referred to as the light entrance port C, and the method of comparing the light inlet port A with the light entrance port B is also used. Comparing the light entrance B with the light entrance C, and so on, the connection relationship between all the light entrances and the light exits can be determined. The essence of this method is that, in order of the number of detected light exit ports, the light exit ports having the connection relationship with each of the light entrance ports are found in the order of the number of the light exit ports. This approach is exactly the opposite of the approach shown in Figure 1.
  • the first method for determining the connection relationship between the optical interfaces in this embodiment may be implemented by multiple forms of devices, and one of the devices may include: an identifier loading unit, configured to pass the signal in the optical wavelength signal or the optical multiplex section And applying an identifier to the optical wavelength signal or the optical multiplex section signal on each of the optical outlets; and the identifier detecting unit is configured to perform the optical wavelength signal or the optical recovery on each optical optical port through which the optical wavelength signal or the optical multiplex section signal passes The detection is performed by using the identifier of the segment signal; the connection relationship determining unit is configured to determine the connection relationship between the optical port and the light exit port according to the result of the tag detection.
  • the fiber jumper connections between the optical ports are basically one-to-one, and the power loss of the optical signal from the light exit port to the light entrance port having a connection relationship with the light exit port is generally less than 0.2. dB, and if the optical wavelength signal or the optical multiplex section signal does not pass through the amplifier, the optical wavelength signal or the optical multiplex section signal should be degraded during transmission, so the optical wavelength signal or optical multiplexing through a certain optical outlet
  • the power of the optical wavelength signal or the optical multiplex section signal passing through the optical outlet port must be greater than the power passing through the optical entrance ports, and the optical wavelength signal or the optical multiplexing section
  • the power of the signal passing through the optical port connected to the light exit port must be closer to the power passing through the light exit port than the power passing through the other subsequent light entrance ports. Therefore, the connection relationship between the optical ports can also be determined by utilizing the characteristics of the power attenuation of the optical wavelength signal or the optical multiplex section signal during
  • the embodiment further provides a method for determining the connection relationship between the second optical ports.
  • the second method can be applied to the optical regenerator section, and the optical regenerator section can refer to the path of the optical wavelength signal or the optical multiplex section signal after the regeneration or amplification and before the next regeneration or amplification, wherein the optical regenerator section source can be A device such as an amplifier.
  • the overall technical solution of the second method is: loading an identifier of the optical wavelength signal or the optical multiplex section signal emitted by the optical signal source, or loading the amplified optical wavelength signal or the optical multiplex section signal on the optical regenerator section source And detecting the identifier on each of the light entrance port and the light exit port in the light regeneration segment of the optical wavelength signal or the optical multiplex section signal; and between the light entrance port and the light exit port
  • the identifier matching and the power matching relationship determine the connection relationship between the light exit port and the light entrance port.
  • the connection relationship between the optical port and the light exit port is determined according to the following steps: the power of the optical wavelength signal detected by the optical port, the power of the optical multiplex section signal, or the identified power, Sorting the light entrance port; adding the light exit port to the light entrance port sequence according to the power of the optical wavelength signal detected on the light exit port, the power of the optical multiplex section signal, or the identified power; If there is one and only one light exit port between the two adjacent light entrance ports, it is determined that the light exit port has a connection relationship with the light entrance ports of the two light entrance ports that detect lower power; A light port has one and only one light exit port before the light entrance port, and then the connection between the light exit port and the light entrance port is determined.
  • connection relationship between the optical port and the light exit port may be determined according to the following: the power of the optical wavelength signal detected by the light exit port, the power of the optical multiplex section signal, or the identified power. Sorting the light exit ports; adding the light entrance port to the light exit port sequence according to the power of the optical wavelength signal detected on the light entrance port, the power of the optical multiplex section signal, or the identified power; If there is one and only one light entrance port between the two adjacent light exit ports, it is determined that the light entrance port has a connection relationship with the light exit ports of the two light exit ports that detect higher power; if the light exiting The port has a connection port and the light entrance port is determined to have a connection relationship between the light exit port and the light entrance port.
  • connection port is determined to have a connection relationship with the light output port corresponding to the light source or the light regeneration segment source.
  • Step S201 loading an identifier of the optical wavelength signal or the optical multiplex section signal emitted by the optical signal source, or loading the amplified optical wavelength signal or the optical multiplex section signal on the optical regenerator section source.
  • the optical signal source or the optical regenerator section source loads the identifier in the optical wavelength signal or the optical multiplex section signal that is emitted or amplified, and the other optical outlets are the same as the optical interface, and only the identification is detected, and the identification is not loaded.
  • the optical signal source may be an optical network node or an optical network device functional unit, such as a wavelength conversion unit.
  • Step S202 detecting an identifier on each of the optical port and the optical port in the optical regenerator section through which the optical wavelength signal or the optical multiplex section signal passes.
  • Step S203 The correspondence between the optical port and the optical port of the same quantity and content identification and the information detected by the same is summarized into one group.
  • optical port or an optical port For an optical port or an optical port, if the optical wavelength signal or optical multiplex section signal passing through the optical port or the optical port passes through some other or some optical port or light exit port, the optical port or The number and content of the identifiers detected by the optical port are exactly the same as the number and content of the identifiers detected by some other optical ports. If the optical wavelength signal or optical multiplex section signal passes through the optical port or the optical port.
  • the number and content of the identifiers detected by the optical port or the optical port may be different from the number and content of the tags detected by some other optical ports or some optical ports.
  • step S203 the correspondence between the optical port that detects the same quantity and the identifier of the content and all the detected identifiers and the corresponding optical power information may be summarized, and correspondingly, the same quantity and content are detected.
  • the correspondence between the light exit port of the road identification signal and all the detected signals and the corresponding optical power information is summarized, so that a plurality of light inlet port groups and light exit port groups can be obtained, and the optical ports in each group are detected.
  • the number and content of the identifiers are exactly the same as the number and content of the identifiers detected by other optical ports of the same group.
  • Step S204 Perform power matching on the optical ports of the same group, and the optical port with the best matching power has a connection relationship with the optical port.
  • the optical power corresponding to the detected identifier is matched most.
  • the light entrance or light exit port that is found is the light entrance or light exit port that has a connection relationship with it.
  • the light inlet is used as a reference to determine the light inlet that has a connection relationship with it, the light can be emitted first.
  • the light outlets in the port group are sorted, for example, according to the order of power from large to small.
  • the light entrance ports in the corresponding light inlet group can be sorted, and the corresponding light inlet group refers to this
  • the light exit port in the light exit port group detects a group consisting of all the light entrance ports of the same quantity and content identification.
  • the first light exit port in the light exit port group is used as a reference to determine the light entrance port that has a connection relationship with the first light exit port, that is, the corresponding light detected from the corresponding light inlet port group is searched for.
  • the light entrance port whose power is smaller than and closest to the corresponding optical power detected by the first light exit port.
  • the power difference between the power of the optical wavelength signal or the optical multiplex section signal passing through an optical outlet and the optical entrance that has a connection relationship with the optical outlet should be less than 0.2 dB, but considering the influence of detection accuracy and the like. It can be considered that the optical power difference can be less than ldB. Therefore, the found optical port should be the detected optical power less than the optical power detected by the optical port, and the difference should be less than the optical port of the ldB, and the found optical port. That is, the light entrance port has a connection relationship with the first light exit port.
  • the other light exit ports are used as reference to determine the light entrance ports that are connected to the light exit ports.
  • the light exit ports in the other light exit port groups are used as reference to determine these.
  • the light exit ports in the light exit port group have a light entrance port in a connected relationship, so that the connection relationship between the light ports can be determined.
  • the light-in ports in the light-in port group may be sorted first, for example, in order of power being small to large.
  • the light-emitting ports in the corresponding light-emitting port group may be sorted, and the corresponding light-emitting port group refers to a group consisting of all light-emitting ports that detect the same quantity and content of the light-in port in the light-in port group.
  • the first optical port in the optical port group is used as a reference to determine the light exit port that has a connection relationship with the first optical port, that is, from the corresponding light port group, the detected light is detected.
  • the power difference between the power of the optical wavelength signal or the optical multiplex section signal passing through a certain optical entrance port and the light exiting port having a connection relationship with the optical entrance port should be less than 0.2 dB, but considering the detection accuracy and the like.
  • the effect of the optical power difference can be considered to be less than ldB. Therefore, the illuminating port that is found should be the optical power detected by the optical port, and the difference should be less than the illuminating port of the ldB. That is, the light exit port having a connection relationship with the first light entrance port. In the same way, the light exit ports that are connected to the light entrance ports are determined based on other light entrance ports.
  • the light entrance ports in the other light inlet port groups are used as reference.
  • the connection relationship between the optical ports it is also possible to determine the connection relationship between the optical ports. It should be noted that if the optical power difference between the optical entrance and the optical outlet in the same position in the sequence is too large, it can be further inferred that although there is a fiber connection relationship between the optical port and the optical port, the fiber connection may be affected by the fiber. The connection loss is excessive due to contamination, damage, and poor connection of the jumper end face. If the number of the light-emitting ports and the number of light-injecting ports of the same mark are not matched, it can be inferred which fiber-optic connection is abnormal behind the light-emitting port.
  • the light inlet port group of Sl and S3 is detected as ⁇ light-in port 1 of function unit B, light-in port 3 of function unit C ⁇ , and the light-emitting port group is ⁇ light-emitting port 2 of function unit A, and light-in of function unit B Port 1 ⁇ ;
  • the optical port group of S2 and S4 is detected as ⁇ light-in port 2 of function unit B, light-in port 1 of function unit C ⁇ , and the light-emitting port group is ⁇ light-emitting port 3 of function unit A, functional unit
  • the light entrance port of B is detected as the light inlet port of S5 and S6 is ⁇ the light entrance port 3 of the function unit B, the light entrance port 2 of the function unit C ⁇ , and the light exit port group is the light exit port of the function unit A. 1, the light inlet port 3 of function unit B.
  • the corresponding light power is found to be relatively close from the light exit port group of the detected S1 and S3, and the optical power is higher than the light input port of the functional unit B.
  • only the optical signal source or the optical regenerator segment source may load the optical wavelength signal or the optical multiplex segment signal, and the optical port does not need to pass through each of the optical ports.
  • the optical wavelength signal or the optical multiplex section signal loading identifier avoids the loss introduced by the identification loading device and saves the cost required to introduce the loading device.
  • the second method for determining the connection relationship between the optical ports in this embodiment may be implemented by many forms of devices, and one of the devices may include: an identifier loading unit for transmitting the pair of optical signals The optical wavelength signal or the optical multiplex section signal loading identifier, or the identifier of the amplified optical wavelength signal or the optical multiplex section signal is loaded on the optical regenerator section source; the identifier detecting unit is configured to be used in the optical wavelength signal or the optical multiplex section signal a detection identifier is detected on each of the optical entrances and the optical outlets in the subsequent optical regenerative section; the connection relationship determining unit is configured to determine the optical outlets and the according to the identifier matching and the power matching relationship between the optical inlets and the optical outlets The connection relationship between the optical ports.
  • the present invention also provides a method of determining the connection relationship between the third optical ports.
  • the overall technical solution of the third method for determining the connection relationship between the optical interfaces of the present embodiment is: loading an identifier of the passed optical wavelength signal or the optical multiplex section signal on the optical signal source and the optical regenerator section source, The light entrance signal and the light exit port through which the optical wavelength signal or the optical multiplex section signal passes detect the loaded identifier; and according to the identification detection result, determine between the optical signal source and the optical regenerator section source and between the optical regenerator section source Adjacent upstream and downstream relationship, and determining the light entrance port and the light exit port group in the same regeneration segment; in the same regeneration segment light entrance port and light exit port group, the light detected according to the light exit port and the light entrance port
  • the wavelength signal power or the optical multiplex section signal power or the identification power relationship determines a connection relationship between the light exit port and the light entrance port.
  • the light entrance port and the light exit port detect the same number of marks and the marks are completely the same as the light entrance port and the light exit port group in the same regeneration segment.
  • the frequency, the spreading code, the identifier ID information carried by the identifier, or the slot information corresponding to the identifier corresponds to the optical signal source or the optical regenerator segment source.
  • the connection relationship between the light entrance port and the light exit port in the same regeneration segment may be determined according to the power of the optical wavelength signal detected by the light entrance port, the power or identifier of the optical multiplex section signal.
  • the power is sorted by the optical port; the light output port is added to the light entrance port sequence according to the power of the optical wavelength signal detected on the optical port, the power of the optical multiplex section signal, or the identified power. If there is one and only one light exit port between the two adjacent light entrance ports, determining that the light exit port has a connection relationship with the light inlet ports of the two light entrance ports that detect lower power; If there is one and only one light exit port before the light entrance port, it is determined that the light exit port and the light entrance port have a connection relationship.
  • the connection relationship between the light entrance port and the light exit port in the same regeneration segment may be determined according to the power of the optical wavelength signal detected by the light exit port, the power or identifier of the optical multiplex section signal.
  • the power of the optical port is sorted; the light entrance port is added to the light exit port sequence according to the power of the optical wavelength signal detected on the optical port, the power of the optical multiplex section signal, or the identified power. If there is one and only one light entrance port between the two adjacent light exit ports, it is determined that the light entrance port has a connection relationship with the light exit ports of the two light exit ports that detect higher power; After the light exit port has one and only one light entrance port is behind the light exit port, it is determined that the light exit port and the light entrance port have a connection relationship.
  • the adjacent upstream and downstream relationship between the optical signal source and the optical regenerator section source and the optical regenerator section source may be determined in the following manner: according to the result of the detection identification, the optical entrance of each optical regenerator section source The number of the light exit ports of the detected optical signal source or the optical regenerator section source is sorted from as little as possible; if the light entrance port of one optical regenerator section source corresponds to only one optical signal source or the light exiting port of the optical regenerator section source, The source of the light regenerator section is adjacent to the downstream of the source of the optical signal or the source of the optical regenerator section.
  • n+1 is detected. a navigating relationship, wherein n of the n+1 identifiers are identical to the n identifiers detected by the source of the optical regenerator segment where the n identifiers are detected, n is an integer greater than 0; and so on , and then determine the connection relationship between other sources of optical regenerator sections.
  • the number of the light exit port identifiers of the light regeneration segment source detected by the light entrance port of each light regeneration segment source is sorted; the light input of the two light regeneration segment sources whose number of detection detections are greater than 1 and the number difference is 1
  • the identifiers detected by the port are compared. If the identifiers detected by the light entrance ports of the two light regeneration segment sources have one and only one difference, the source of the light regeneration segments with the detected number of detections is located at the difference. Identifying the adjacent optical regenerator segment source adjacent to the downstream; determining, for the optical regenerator segment source having the detected number of 1, determining that the optical regenerator segment source is located adjacent to the optical signal source or the optical regenerator segment source corresponding to the identifier Downstream.
  • Step S301 loading an identifier of the passed optical wavelength signal or the optical multiplex section signal on the optical signal source and the optical regenerator section source.
  • the optical regenerator section source can change the optical power in the optical network. If the optical regenerator section source is loaded with an identifier on the optical wavelength signal or the optical multiplex section signal passing through the optical outlet, the optical signal source and the adjacent optical regenerator section source are The optical wavelength signal or the optical power of the optical multiplex section signal transmitted between two adjacent optical regenerator section sources and between the optical signal sink and the adjacent optical regenerator section source are decremented, so that the entire optical network is The optical signal source, the optical regenerator section source and the optical signal sink are divided into several sections, and the optical power of the optical wavelength signal or the optical multiplex section signal transmitted in each section is decremented.
  • Step S302 The optical signal sink or each optical regenerator section source determines the optical regenerator section source or the optical signal source adjacent thereto by detecting the arriving identifier.
  • Step S302 can be implemented by the flow shown in FIG. 1, except that the optical signal sink or each optical regenerator section source detects the optical signal source and the optical regenerator section source loading identifier, and finally determines the optical signal source and all the Adjacent upstream and downstream relationship between the regeneration segment source and the optical signal sink.
  • Step S303 All the optical port or the optical port in each optical regenerator section detects all the identifiers and corresponding optical power information in the arriving optical wavelength signal or optical multiplex section signal. This step can be the same as step S202.
  • Step S304 The correspondence between the optical port and the optical port of the same quantity and content identification and the information detected by the same is summarized into one group. This step can be the same as step S203.
  • Step S305 Perform power matching on the optical ports of the same group, and the optical port with the best matching power has a connection relationship with the optical port. This step can be the same as step S204.
  • the optical power corresponding to the detected identifier is matched most.
  • the entrance or exit port of the light entrance or the light exit port is the light entrance or light exit port that has a connection relationship with it.
  • step S301 the technical means for loading the identifier in the emitted optical signal by each optical signal source in the above step S301 may be started in step S303, or step S302 and step S303 may be performed simultaneously.
  • the optical signal source, the optical regenerator segment source, and the optical signal sink may divide the entire optical network into a plurality of intervals.
  • FIG. 1 may be used.
  • the illustrated flow determines the adjacent upstream and downstream relationship between the optical signal source, the optical regenerator section source, and the optical signal sink, and uses the flow shown in FIG. 2 to determine the connection relationship between all optical ports in each section, so
  • the third method of the present invention can be used to determine the connection relationship between optical ports.
  • the third method for determining the connection relationship between the optical ports in this embodiment may be implemented by a plurality of devices, and one of the devices may include: a tag loading unit for collating the optical signal source and the optical regenerator segment source.
  • the relationship and optical port group determining unit is configured to determine an adjacent upstream and downstream relationship between the optical signal source and the optical regenerator segment source and the optical regenerator segment source according to the tag detection result, and determine the light entering the same regenerative segment a port and an optical port group; a connection relationship determining unit, configured to, in the same regenerator section optical port and the egress port group, the optical wavelength signal power or the optical multiplex section signal power detected according to the light exit port and the light entrance port Or identifying a power relationship, and determining a connection relationship between the light exit port and the light
  • All the methods and devices of the present invention can not only determine the optical port connection relationship between the optical network nodes, but also determine the optical port connection relationship between the various functional units in the optical network node.
  • electromagnetic interference such as power-off and creepage can be avoided because the functional units are relatively independent.
  • Electromagnetic Interference Electromagnetic Interference
  • All methods and apparatus of the embodiments of the present invention use the identifier as a basis for detecting the connection relationship, In this way, the problem that the detection result is inconsistent with the actual service running condition in the case of bypass detection can be avoided, and the connection relationship between the optical ports can be determined at any time without affecting the normal transmission of the optical signal.
  • the path identification signal loaded by an optical port is not detected by the optical port of any functional unit in the optical network node or the optical port of another optical network node. If it is, the optical fiber jumper that is connected to the optical port is faulty.
  • an optical port does not detect the optical port of any functional unit in the optical network node or the optical port of other optical network nodes.
  • the identification of the optical port does not have a connection relationship with the optical port of any functional unit or other optical network node of the optical network node, or the optical fiber hop that is connected to the optical port. There is a fault in the line. Therefore, all embodiments of the method of the present invention can also determine whether the connection between the optical ports is normal, the occurrence point of the positioning failure, and the like.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)

Abstract

L'invention a pour objet des procédés consistant à déterminer le rapport de connexion entre des ports optiques et l'un des procédés comprend les étapes suivantes : un identifiant est chargé sur un signal de longueur d'onde optique ou un signal de section de multiplexage optique sur chaque sortie optique que traverse le signal de longueur d'onde optique ou le signal de section de multiplexage optique, chaque entrée optique que traverse le signal de longueur d'onde optique ou le signal de section de multiplexage optique détecte l'identifiant chargé sur le signal de longueur d'onde optique ou le signal de section de multiplexage optique; et le rapport de connexion entre l'entrée optique et la sortie optique est déterminé sur la base du résultat de la détection de l'identifiant. Des dispositifs consistant à déterminer le rapport de connexion entre des ports optiques sont également fournis. Ils sont réalisables sur la technologie et n'ont pas d'exigence spécifique pour les opérateurs et les agents d'entretien, et peuvent être utilisés pour déterminer le rapport de connexion entre les ports optiques et également être utilisés en pratique.
PCT/CN2008/071545 2007-07-05 2008-07-04 Procédés et dispositifs consistant à déterminer le rapport de connexion entre des ports optiques WO2009006833A1 (fr)

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