CN113300803A - Networking method, device, networking system and network communication method - Google Patents
Networking method, device, networking system and network communication method Download PDFInfo
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- CN113300803A CN113300803A CN202010863891.9A CN202010863891A CN113300803A CN 113300803 A CN113300803 A CN 113300803A CN 202010863891 A CN202010863891 A CN 202010863891A CN 113300803 A CN113300803 A CN 113300803A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0201—Add-and-drop multiplexing
- H04J14/0202—Arrangements therefor
- H04J14/021—Reconfigurable arrangements, e.g. reconfigurable optical add/drop multiplexers [ROADM] or tunable optical add/drop multiplexers [TOADM]
- H04J14/0212—Reconfigurable arrangements, e.g. reconfigurable optical add/drop multiplexers [ROADM] or tunable optical add/drop multiplexers [TOADM] using optical switches or wavelength selective switches [WSS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0201—Add-and-drop multiplexing
- H04J14/0215—Architecture aspects
Abstract
The application discloses a networking method, which comprises the following steps: setting at least one port in a first port group of a wavelength selective switch as a first group of directional ports; setting at least one port in a second port group of the wavelength selective switch as a second group of directional ports, and configuring the first group of directional ports to pass through the second group of directional ports; the wavelength selective switch includes: a first port set and a second port set; the first set of directional ports comprises at least one directional port, the second set of directional ports comprises at least one directional port, and the directional dimensions of each directional port are different; configuring cross connection of a first add/drop port and the first group of directional ports; the first add/drop port is a port in the second port group and is used for local add/drop of the first direction signal; configuring cross connection between a second uplink port and a second downlink port and the second group of directional ports; and the second add-drop port is a port in the first port group and is used for local add-drop of the second direction signal.
Description
Technical Field
The present application relates to the field of communications, and in particular, to a networking method, a networking device, an electronic device, and a storage device. The application also relates to a networking system. The application also relates to a network communication method.
Background
With the development of cloud computing, the demand of interconnection bandwidth is rapidly increasing, and the interconnection between data center parks generally adopts the optical transmission Dense Wavelength Division Multiplexing (DWDM) technology to provide high-capacity interconnection. In some scenarios with complex topology, a Reconfigurable Optical Add Drop Multiplexer (ROADM) is required to be used, so that the transmission network has certain flexibility. Typically, the ROADM sites function primarily for signal add/drop, scheduling, pass-through, optical equalization, etc.
Traditionally, the networking design of ROADM is usually oriented to a large and complete cross matrix, and the scheduling capability is pursued, which is embodied as multi-dimensionality, large port number and the like, resulting in relatively large equipment volume and complex fiber connection between boards. In an actual networking, there are many non-core cross nodes, which mainly use signal up and down, pass-through, and optical equalization, and there is no need for signal scheduling to multiple directions, and the main feature is that the ROADM dimension is small (e.g. 2 directions).
As shown in fig. 1A, in a network topology, Site1 and Site9 are main signal grounds and cross nodes, and have multiple dimensions, so that the requirement for a scheduling function in multiple directions is high. The other sites 2-8 nodes only have 2 directions, and the functional appeal is mainly signal penetration, up-down and light balance.
In the figure, each node of Site 2-Site 8 has 2 direction dimensions except for local uplink and downlink, and the conventional design of ROADM networking in a Site is shown in fig. 1B. Two 1 × N WSS board cards form 2 dimensions, a COM port in each dimension represents a common direction, and an AD port represents an up-down direction. The AD1 of two integrated circuit boards are connected to realize the connection of a through light path, the AD2 to ADn of each integrated circuit board realize the function of going up and down, and the connection of a wave splitter and a CDC unit or direct connection of electrical layer equipment can be selected to realize the up and down of signals.
When there are multiple hops in a link, such an intra-site ROADM networking has the following disadvantages:
1) the effect of insertion loss. Assuming that a 1 × 20 Wavelength Selective Switch (WSS) is adopted, the insertion loss value is about 7.5dB at most, the two boards are added together by about 15dB, if the two boards pass through a fiber shuffle unit, 1-2 dB insertion loss is additionally added, which is equivalent to that a 16-17 dB insertion loss span is added for each signal pass-through, and certain influence is caused on the OSNR transmission performance of the signal after multiple pass-through;
2) filtering, Polarization Dependent Loss (PDL), etc. Each time of punch-through is subjected to filtering and PDL effect of the WSS unit for 2 times, the filtering and PDL effect after the punch-through is carried out for multiple times is more and more obvious, and certain damage and performance cost are caused to a transmission signal.
Disclosure of Invention
The application provides a networking method, a networking device, electronic equipment and storage equipment, and aims to solve the problem that the networking method in the prior art affects signal transmission performance.
The application provides a networking method, which comprises the following steps:
setting at least one port in a first port group of a wavelength selective switch as a first group of directional ports; the wavelength selection switch is a component for building a reconfigurable optical add-drop multiplexer network;
setting at least one port in a second port group of the wavelength selective switch as a second group of directional ports, and configuring the first group of directional ports to pass through the second group of directional ports; wherein the wavelength selective switch comprises: a first port set and a second port set; wherein the first set of directional ports comprises at least one directional port, the second set of directional ports comprises at least one directional port, and the directional dimensions of each directional port are different;
configuring cross connection of a first add/drop port and the first group of directional ports; the first add/drop port is a port in the second port group, and is used for local add/drop of a first direction signal;
configuring cross connection between a second uplink port and a second downlink port and the second group of directional ports; and the second add/drop port is a port in the first port group and is used for local add/drop of a second direction signal.
Optionally, the configuring the first set of directional ports to pass through the second set of directional ports includes:
configuring any port of the first set of directional ports to pass through any port of the second set of directional ports.
Optionally, the first set of directional ports includes at least two ports;
the configuring the first set of directional ports to pass through with the second set of directional ports further comprises:
configuring two ports included in the first set of directional ports to pass through.
Optionally, two ports included in the first group of directional ports are a first directional port and a second directional port; the configuring of the first set of directional ports comprises two port feedthroughs, comprising:
setting a port except for a second group of directional ports in the second port group as a first transit port;
and configuring the first direction port to be in cross connection with the first transit port, and configuring the first transit port to be in cross connection with the second direction port, wherein the first direction port passes through the first transit port and penetrates through the second direction port.
Optionally, the method further includes:
and amplifying the signal passing through the first transit port by using a gain optical amplifier device, so as to compensate the through insertion loss from the first direction port to the first transit port or the through insertion loss from the first transit port to the second direction port.
Optionally, the second set of directional ports includes at least two ports;
the configuring the first set of directional ports to pass through with the second set of directional ports further comprises:
configuring two ports comprised by the second set of directional ports to pass through.
Optionally, two ports included in the second set of directional ports are a third directional port and a fourth directional port; the configuring of the second set of directional ports comprises two port feedthroughs, comprising:
setting a port out of a first group of directional ports in the first port group as a second transit port;
and configuring the cross connection between the third direction port and the second transit port, and configuring the cross connection between the second transit port and the fourth direction port, wherein the third direction port passes through the second transit port and penetrates through the fourth direction port.
Optionally, the method further includes:
and amplifying the signal passing through the first transit port by using a gain optical amplifier device, so as to compensate the through insertion loss from the third direction port to the second transit port or the through insertion loss from the second transit port to the fourth direction port.
Optionally, the method further includes:
before the signal reaches the first add-drop port or the second add-drop port, an optical splitter is connected in the add-drop direction to realize direction-independent signal up and down.
Optionally, the method further includes:
when the number of the upper and lower wave bands of the signal is larger than that of the first upper and lower path ports, at least one upper and lower path port in the first upper and lower path ports is connected with a multiplexer-demultiplexer; alternatively, the first and second electrodes may be,
and when the number of the upper and lower wave bands of the signal is greater than that of the second upper and lower path ports, at least one upper and lower path port in the second upper and lower path ports is connected with the multiplexer-demultiplexer.
The present application further provides a networking device, including:
a first group of directional port setting units, configured to set at least one port in a first port group of the wavelength selective switch as a first group of directional ports; the wavelength selection switch is a component for building a reconfigurable optical add-drop multiplexer network;
a second group of directional ports setting unit, configured to set at least one port in a second port group of the wavelength selective switch as a second group of directional ports, and configure the first group of directional ports to pass through the second group of directional ports; wherein the wavelength selective switch comprises: a first port set and a second port set; wherein the first set of directional ports comprises at least one directional port, the second set of directional ports comprises at least one directional port, and the directional dimensions of each directional port are different;
the first add-drop port configuration unit is used for configuring the cross connection between a first add-drop port and the first group of directional ports; the first add/drop port is a port in the second port group, and is used for local add/drop of a first direction signal;
a second add/drop port configuration unit, configured to configure cross connection between a second add/drop port and the second group of directional ports; and the second add/drop port is a port in the first port group and is used for local add/drop of a second direction signal.
The present application further provides an electronic device, comprising:
a processor; and
a memory for storing a program of a networking method, wherein the following steps are executed after the device is powered on and the program of the networking method is run by the processor:
setting at least one port in a first port group of a wavelength selective switch as a first group of directional ports; the wavelength selection switch is a component for building a reconfigurable optical add-drop multiplexer network;
setting at least one port in a second port group of the wavelength selective switch as a second group of directional ports, and configuring the first group of directional ports to pass through the second group of directional ports; wherein the wavelength selective switch comprises: a first port set and a second port set; wherein the first set of directional ports comprises at least one directional port, the second set of directional ports comprises at least one directional port, and the directional dimensions of each directional port are different;
configuring cross connection of a first add/drop port and the first group of directional ports; the first add/drop port is a port in the second port group, and is used for local add/drop of a first direction signal;
configuring cross connection between a second uplink port and a second downlink port and the second group of directional ports; and the second add/drop port is a port in the first port group and is used for local add/drop of a second direction signal.
The present application also provides a storage device storing a program of the networking method, the program being executed by a processor to perform the steps of:
setting at least one port in a first port group of a wavelength selective switch as a first group of directional ports; the wavelength selection switch is a component for building a reconfigurable optical add-drop multiplexer network;
setting at least one port in a second port group of the wavelength selective switch as a second group of directional ports, and configuring the first group of directional ports to pass through the second group of directional ports; wherein the wavelength selective switch comprises: a first port set and a second port set; wherein the first set of directional ports comprises at least one directional port, the second set of directional ports comprises at least one directional port, and the directional dimensions of each directional port are different;
configuring cross connection of a first add/drop port and the first group of directional ports; the first add/drop port is a port in the second port group, and is used for local add/drop of a first direction signal;
configuring cross connection between a second uplink port and a second downlink port and the second group of directional ports; and the second add/drop port is a port in the first port group and is used for local add/drop of a second direction signal.
The present application also provides a networking system comprising: a local site and an intermediate site; the local site and the intermediate site are sites which are used for providing functions of punch-through, add/drop and optical balance and have scheduling dimensions smaller than a preset dimension threshold; the local station and the intermediate station are provided with a reconfigurable optical add-drop multiplexer network;
the reconfigurable optical add-drop multiplexer networking comprises a wavelength selection switch configured by any networking method in the networking methods of the application.
The application also provides a network communication method, which comprises the following steps:
the method comprises the following steps that a source local site sends signals through a reconfigurable optical add-drop multiplexer network arranged at the source local site;
the target local site receives a signal sent by a source local site through a reconfigurable optical add-drop multiplexer network arranged in the target local site; the reconfigurable optical add-drop multiplexer networking comprises a wavelength selection switch configured according to any networking method of the present application.
Optionally, the method further includes:
at least one intermediate site positioned between the source local site and the target local site receives signals sent by the source local site through a reconfigurable optical add-drop multiplexer contained in the intermediate site in sequence;
the reconfigurable optical add-drop multiplexer contained in the intermediate site performs punch-through, scheduling and optical equalization function processing on the signals sent by the source local site;
sending the signal sent by the source local site to a target local site through the intermediate site; the reconfigurable optical add-drop multiplexer networking included in the intermediate site comprises a wavelength selection switch configured by any networking method of the application;
the target local site receives the signal sent by the source local site through a reconfigurable optical add-drop multiplexer network arranged in the target local site, and the method comprises the following steps:
and the target local site receives the signal transmitted by the source local site and forwarded by the intermediate site through a reconfigurable optical add-drop multiplexer arranged in the target local site in a networking manner.
Compared with the prior art, the method has the following advantages:
the networking method provided by the application realizes at least two directional dimensions by adopting one M x N WSS, and has the following advantages compared with the method for realizing at least two directional dimensions by adopting at least two 1x N WSSs: 1) the through insertion loss is reduced. For example, when two dimensions are realized with one M × N WSS, the maximum insertion loss of one M × N WSS module is about 9.5dB, which is much smaller than the sum of the insertion losses of two 1 × N WSS modules; 2) the punch-through filtering effect is reduced. The filtering of the WSS mainly comes from an internal grating device, 2 grating filtering (corresponding to split + combined light respectively) are performed inside 1 × N WSS, and 2 grating filtering (split + combined light) are also performed inside 1M × N WSS, so that the bandwidth of 2 1 × N WSS is smaller than that of 1M × N WSS. Under the scene of multiple breakthroughs, the damage cost of the filtering effect on the transmission signal can be obviously reduced; 3) the effect of through PDL (polarization dependent loss) is reduced. The PDL of WSS comes mainly from internal LCOS (Liquid Crystal on Silicon) devices, and 2 WSS with 1 × N and 1M × N are subjected to 2 LCOS, and considering the PDL random effect, if the 2 WSS cards are random, it may be cancelled and may be expanded, and if the WSS cards are internal to 1M × N card, the optimization may be controlled to be cancelled. In the scenario of multiple punch-through, the cumulative value of the PDL effect can be reduced.
Drawings
Fig. 1A is a network topology diagram provided in the prior art.
Fig. 1B is a schematic diagram of a networking (two directional dimensions) provided by the prior art.
Fig. 1 is a flowchart of a networking method according to a first embodiment of the present application.
Fig. 2 is a schematic diagram of a networking (two-directional dimension) according to a first embodiment of the present application.
Fig. 3 is a schematic diagram of a three-dimensional networking designed by using the networking method of the present application.
Fig. 4 is a schematic diagram of a four-dimensional networking designed by using the networking method of the present application.
Fig. 5 is a schematic diagram of a networking device according to a second embodiment of the present application.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather construed as limited to the embodiments set forth herein.
A first embodiment of the present application provides a networking method, which is described below with reference to fig. 1 to 5.
As shown in fig. 1, in step S101, at least one port in a first port group of a wavelength selective switch is set as a first group of directional ports; the wavelength selection switch is a component for building a reconfigurable optical add-drop multiplexer network.
The wavelength selection switch may refer to wss (wavelength Selective switch) of M × N.
For example, as shown in fig. 2, which shows an M × N wavelength selective switch, the first port group includes ports M1To MmSelecting one port M in the first port group of the wavelength selective switch1The arrangement is such that the first set of directional ports comprises one directional port (West).
As shown in fig. 1, in step S102, at least one port in the second port group of the wavelength selective switch is set as a second group of directional ports, and the first group of directional ports and the second group of directional ports are configured to pass through; wherein the wavelength selective switch comprises: the device comprises a first port group and a second port group, wherein the first group of directional ports comprises at least one directional port, the second group of directional ports comprises at least one directional port, and the directional dimension of each directional port is different.
As shown in FIG. 2, the second port group includes a port N1To NnSelecting one port N in the second port group of the wavelength selection switch1A second set of directional ports is provided, the second set of directional ports comprising one directional port (East).
In fig. 2, the port M in the first port group of the wavelength selective switch is shown1Setting as a first group of directional ports, selecting ports N in a second port group of the wavelength selective switch1Are provided as a second set of directional ports. In particular embodiments, the first set of directional ports may include only one directional portAny one port in one port group is set as a first group of directional ports, and when the second group of directional ports only includes one directional port, any one port in the second port group can be set as a second group of directional ports.
As shown in FIG. 3, the first set of directional ports includes port M1The second set of directional ports includes N1And N2。
The configuring the first set of directional ports to pass through with the second set of directional ports comprises:
configuring any port of the first set of directional ports to pass through any port of the second set of directional ports.
As shown in FIG. 3, configuring the first set of directional ports to pass through the second set of directional ports includes configuring a first set of directional ports M1Respectively with N in the second set of directional ports1And N2And (4) punching through.
When the first set of directional ports comprises at least two ports; the configuring the first set of directional ports to pass through the second set of directional ports may further include:
configuring two ports included in the first set of directional ports to pass through.
The two ports of the first group of directional ports are a first directional port and a second directional port; the configuring of the first set of directional ports comprises two port feedthroughs, comprising:
setting a port except for a second group of directional ports in the second port group as a first transit port;
and configuring the first direction port to be in cross connection with the first transit port, and configuring the first transit port to be in cross connection with the second direction port, wherein the first direction port passes through the first transit port and penetrates through the second direction port.
For example, as shown in FIG. 4, the first set of directional ports includes two ports, which are the first directional ports M1And a second direction port M2A second set of directional ports (N) in the second port set1And N2) One port N outside3Setting as a first transit port, configuring a first direction port M1And a first transfer port N3Cross-connect and configure the first transit port N3And a second direction port M2Cross-connect, first direction port M1Through the first transit port N3And a second direction port M2And (4) punching through.
It should be noted that the first direction port and the second direction port may refer to any two ports included in the first group of direction ports, for example, if the first group of direction ports includes three ports P1, P2, and P3, the first direction port and the second direction port may refer to any one group of P1 and P3, P2 and P3, P1 and P3, and may also refer to any two or three groups thereof.
Further, the optical power balance characteristic in punch-through scheduling between different dimensions can be considered in N3(Trans2) Adding a small gain optical amplifier to the port to compensate for the slave M1To N3Through insertion loss between or N3To M2The punch-through loss of (a).
As an implementation manner, the first embodiment of the present application may further include:
and amplifying the signal passing through the first transit port by using a gain optical amplifier device, so as to compensate the through insertion loss from the first direction port to the first transit port or the through insertion loss from the first transit port to the second direction port.
When the second set of directional ports comprises at least two ports; the configuring the first set of directional ports to pass through the second set of directional ports may further include: configuring two ports comprised by the second set of directional ports to pass through.
The two ports of the second group of directional ports are a third directional port and a fourth directional port; the configuring of the second set of directional ports comprises two port feedthroughs, comprising:
setting a port out of a first group of directional ports in the first port group as a second transit port;
and configuring the cross connection between the third direction port and the second transit port, and configuring the cross connection between the second transit port and the fourth direction port, wherein the third direction port passes through the second transit port and penetrates through the fourth direction port.
For example, as shown in FIG. 4, the second set of directional ports includes two ports that are third directional ports N1And a fourth directional port N2A first set of directional ports (M) in the first port set1And M2) One other port M3Setting the port as a second transit port, and configuring a third direction port N1And a second transit port M3Cross-connect and configure the second transit port M3And a fourth directional port N2Cross-connect, third direction port N1Through the second transit port M3And a fourth directional port N2And (4) punching through.
As an implementation manner, the first embodiment of the present application may further include:
and amplifying the signal passing through the first transit port by using a gain optical amplifier device, so as to compensate the through insertion loss from the third direction port to the second transit port or the through insertion loss from the second transit port to the fourth direction port.
As shown in fig. 1, in step S103, a cross connection between a first add/drop port and the first group of directional ports is configured; and the first add/drop port is a port in the second port group and is used for local add/drop of the first direction signal.
As shown in FIG. 2, the first add/drop port is N2To NnThe number of the first add/drop ports is determined according to the number of the signal bands.
As shown in fig. 1, in step S104, a cross connection between a second add/drop port and the second set of directional ports is configured; and the second add/drop port is a port in the first port group and is used for local add/drop of a second direction signal.
As shown in FIG. 2, the second add/drop port is M2To MmPart of or all of the ports ofAnd the port is used for determining the number of the second uplink and downlink ports according to the number of the wave bands.
In FIG. 2, by configuration M1To N1Can realize the functions of signal feedthrough and optical equalization between two dimensions of West and East (also can be North and South), and is configured with M1To N2Nn Cross-connect enables local context of West signals, configuration N1To M2Mn cross-connects can enable local up and down of East (East) signals. Therefore, one WSS board card with M × N can complete the functions of signal penetration, up-down and optical equalization.
When the number of the upper and lower wave bands of the signal is large, the Add Drop (Add Drop) can be connected to the multiplexer/demultiplexer to expand the number of the upper and lower wave bands.
As an implementation manner, the first embodiment of the present application may further include:
when the number of the upper and lower wave bands of the signal is larger than that of the first upper and lower path ports, at least one upper and lower path port in the first upper and lower path ports is connected with a multiplexer-demultiplexer; alternatively, the first and second electrodes may be,
and when the number of the upper and lower wave bands of the signal is greater than that of the second upper and lower path ports, at least one upper and lower path port in the second upper and lower path ports is connected with the multiplexer-demultiplexer.
When the signal up and down requires a CDC (Colorless, Directionless, Contentionless, Colorless, Directionless, conflict-free) function, a Splitter may be used in the upstream direction to implement direction-independent signal up and down.
As an implementation manner, the first embodiment of the present application may further include:
before the signal reaches the first add-drop port or the second add-drop port, an optical splitter is connected in the add-drop direction to realize direction-independent signal up and down.
Fig. 3 is a schematic diagram of a three-dimensional networking designed by using the networking method of the present application.
The networking design of the on-board ROADMs may also have scheduling functionality. The networking design of a three-dimensional ROADM in-board with dispatch capability is shown in fig. 3. M1、N1、N2The ports respectively correspond to West, East and North dimensions, and the slave M1To N1(West to East), M1To N2And (West to North) can realize cut-through, and a ROADM networking mode with limited cut-through scheduling direction is formed. For a fully connected networking approach, N is required1To N2(East to North) can be connected, but the WSS module of M x N does not support the ability, and the application adopts a feasible cross connection mode through M2(Trans) port (second transit port), i.e. from N1Warp beam M2To N2. For local signals, M3N can be implemented to Mm port1(East) and N2(North) dimensional local Signal Up-Down, N3M can be implemented to the Nn port1(West) local signal up and down in dimension. Considering the balanced property of optical power in punch-through scheduling between different dimensions, it can be at M2(Trans) port adds a small gain optical amplifier to compensate for the secondary N1To M2Through insertion loss between or M2To N2And through insertion loss therebetween.
Fig. 4 is a schematic diagram of a four-dimensional networking designed by using the networking method of the present application.
An on-board ROADM may also support four-dimensional networking, as shown in fig. 4. From M1To N1(West to East), M1To N2(West to North), M2To N1(South to East), M2To N2(South to North) straight-through, M1Warp of N3To M2Realize West to South punch-through, N1Warp beam M3To N2Realize East to North feedthrough, M for local signal4N can be implemented to Mm port1(East) and N2(North) dimensional local Signal Up-Down, N4M can be implemented to the Nn port1(West) and M2(South) dimension of local signal up and down. May also be in N3(Trans2) Port (first transit port) added optical amplifier, compensating from M1To N3Through insertion loss between or N3To M2Punch-through loss of M3(Trans1) The port (second transit port) adds optical amplifier to compensate for the secondary N1To M3Through insertion loss between or M3To N2The punch-through loss of (a).
It should be noted that the on-board ROADM may also support five-dimensional networking, six-dimensional networking, and the like.
Corresponding to the networking method provided in the first embodiment of the present application, a second embodiment of the present application also provides a networking device.
As shown in fig. 5, the networking device includes:
a first group directional port setting unit 501, configured to set at least one port in a first port group of the wavelength selective switch as a first group directional port; the wavelength selection switch is a component for building a reconfigurable optical add-drop multiplexer network;
a second group directional port setting unit 502, configured to set at least one port in a second port group of the wavelength selective switch as a second group directional port, and configure the first group directional port to pass through the second group directional port; wherein the wavelength selective switch comprises: a first port set and a second port set; wherein the first set of directional ports comprises at least one directional port, the second set of directional ports comprises at least one directional port, and the directional dimensions of each directional port are different;
a first add/drop port configuration unit 503, configured to configure cross connection between a first add/drop port and the first group of directional ports; the first add/drop port is a port in the second port group, and is used for local add/drop of a first direction signal;
a second add/drop port configuration unit 504, configured to configure cross connection between a second add/drop port and the second group of directional ports; and the second add/drop port is a port in the first port group and is used for local add/drop of a second direction signal.
Optionally, the second group of directional port setting units are specifically configured to:
configuring any port of the first set of directional ports to pass through any port of the second set of directional ports.
Optionally, the first set of directional ports includes at least two ports;
the second group of directional port setting units is further configured to:
configuring two ports included in the first set of directional ports to pass through.
Optionally, two ports included in the first group of directional ports are a first directional port and a second directional port; the second group of directional port setting units are specifically configured to:
setting a port except for a second group of directional ports in the second port group as a first transit port;
and configuring the first direction port to be in cross connection with the first transit port, and configuring the first transit port to be in cross connection with the second direction port, wherein the first direction port passes through the first transit port and penetrates through the second direction port.
Optionally, the apparatus further comprises: a first amplification processing unit for performing a first amplification process,
and the optical amplifier is used for amplifying the signal passing through the first transit port by adopting a gain optical amplifier device, and is used for compensating the through insertion loss from the first direction port to the first transit port or the through insertion loss from the first transit port to the second direction port.
Optionally, the second set of directional ports includes at least two ports;
the second group of directional port setting units is further configured to:
configuring two ports comprised by the second set of directional ports to pass through.
Optionally, two ports included in the second set of directional ports are a third directional port and a fourth directional port; the second group of directional port setting units is further configured to:
setting a port out of a first group of directional ports in the first port group as a second transit port;
and configuring the cross connection between the third direction port and the second transit port, and configuring the cross connection between the second transit port and the fourth direction port, wherein the third direction port passes through the second transit port and penetrates through the fourth direction port.
Optionally, the apparatus further comprises: a second amplification processing unit for performing a second amplification process,
and the amplifier is used for amplifying the signal passing through the first transit port by using a gain optical amplifier device, and is used for compensating the through insertion loss from the third direction port to the second transit port or the through insertion loss from the second transit port to the fourth direction port.
Optionally, the apparatus further comprises: the optical splitter is connected with the unit,
the optical splitter is used for connecting an optical splitter in the uplink direction before the signal reaches the first uplink and downlink port or the second uplink and downlink port, and is used for realizing direction-independent signal uplink and downlink.
Optionally, the apparatus further comprises: a connecting unit of the multiplexer/demultiplexer,
the multiplexer/demultiplexer is used for connecting at least one upper and lower path port in the first upper and lower path ports when the number of the upper and lower wave bands of the signal is greater than that of the first upper and lower path ports; alternatively, the first and second electrodes may be,
and when the number of the upper and lower wave bands of the signal is greater than that of the second upper and lower path ports, at least one upper and lower path port in the second upper and lower path ports is connected with the multiplexer-demultiplexer.
It should be noted that, for the detailed description of the apparatus provided in the second embodiment of the present application, reference may be made to the related description of the first embodiment of the present application, and details are not described here again.
Corresponding to the networking method provided in the first embodiment of the present application, a third embodiment of the present application also provides an electronic device.
The electronic device includes:
a processor; and
a memory for storing a program of a networking method, wherein the following steps are executed after the device is powered on and the program of the networking method is run by the processor:
setting at least one port in a first port group of a wavelength selective switch as a first group of directional ports; the wavelength selection switch is a component for building a reconfigurable optical add-drop multiplexer network;
setting at least one port in a second port group of the wavelength selective switch as a second group of directional ports, and configuring the first group of directional ports to pass through the second group of directional ports; wherein the wavelength selective switch comprises: a first port set and a second port set; wherein the first set of directional ports comprises at least one directional port, the second set of directional ports comprises at least one directional port, and the directional dimensions of each directional port are different;
configuring cross connection of a first add/drop port and the first group of directional ports; the first add/drop port is a port in the second port group, and is used for local add/drop of a first direction signal;
configuring cross connection between a second uplink port and a second downlink port and the second group of directional ports; and the second add/drop port is a port in the first port group and is used for local add/drop of a second direction signal.
Optionally, the configuring the first set of directional ports to pass through the second set of directional ports includes:
configuring any port of the first set of directional ports to pass through any port of the second set of directional ports.
Optionally, the first set of directional ports includes at least two ports;
the configuring the first set of directional ports to pass through with the second set of directional ports further comprises:
configuring two ports included in the first set of directional ports to pass through.
Optionally, two ports included in the first group of directional ports are a first directional port and a second directional port; the configuring of the first set of directional ports comprises two port feedthroughs, comprising:
setting a port except for a second group of directional ports in the second port group as a first transit port;
and configuring the first direction port to be in cross connection with the first transit port, and configuring the first transit port to be in cross connection with the second direction port, wherein the first direction port passes through the first transit port and penetrates through the second direction port.
Optionally, the electronic device further performs the following steps:
and amplifying the signal passing through the first transit port by using a gain optical amplifier device, so as to compensate the through insertion loss from the first direction port to the first transit port or the through insertion loss from the first transit port to the second direction port.
Optionally, the second set of directional ports includes at least two ports;
the configuring the first set of directional ports to pass through with the second set of directional ports further comprises:
configuring two ports comprised by the second set of directional ports to pass through.
Optionally, two ports included in the second set of directional ports are a third directional port and a fourth directional port; the configuring of the second set of directional ports comprises two port feedthroughs, comprising:
setting a port out of a first group of directional ports in the first port group as a second transit port;
and configuring the cross connection between the third direction port and the second transit port, and configuring the cross connection between the second transit port and the fourth direction port, wherein the third direction port passes through the second transit port and penetrates through the fourth direction port.
Optionally, the electronic device further performs the following steps:
and amplifying the signal passing through the first transit port by using a gain optical amplifier device, so as to compensate the through insertion loss from the third direction port to the second transit port or the through insertion loss from the second transit port to the fourth direction port.
Optionally, the electronic device further performs the following steps:
before the signal reaches the first add-drop port or the second add-drop port, an optical splitter is connected in the add-drop direction to realize direction-independent signal up and down.
Optionally, the electronic device further performs the following steps:
when the number of the upper and lower wave bands of the signal is larger than that of the first upper and lower path ports, at least one upper and lower path port in the first upper and lower path ports is connected with a multiplexer-demultiplexer; alternatively, the first and second electrodes may be,
and when the number of the upper and lower wave bands of the signal is greater than that of the second upper and lower path ports, at least one upper and lower path port in the second upper and lower path ports is connected with the multiplexer-demultiplexer.
It should be noted that, for the detailed description of the electronic device provided in the third embodiment of the present application, reference may be made to the related description of the first embodiment of the present application, and details are not repeated here.
Corresponding to the networking method provided in the first embodiment of the present application, a fourth embodiment of the present application further provides a storage device, in which a program of the networking method is stored, and the program is executed by a processor to perform the following steps:
setting at least one port in a first port group of a wavelength selective switch as a first group of directional ports; the wavelength selection switch is a component for building a reconfigurable optical add-drop multiplexer network;
setting at least one port in a second port group of the wavelength selective switch as a second group of directional ports, and configuring the first group of directional ports to pass through the second group of directional ports; wherein the wavelength selective switch comprises: a first port set and a second port set; wherein the first set of directional ports comprises at least one directional port, the second set of directional ports comprises at least one directional port, and the directional dimensions of each directional port are different;
configuring cross connection of a first add/drop port and the first group of directional ports; the first add/drop port is a port in the second port group, and is used for local add/drop of a first direction signal;
configuring cross connection between a second uplink port and a second downlink port and the second group of directional ports; and the second add/drop port is a port in the first port group and is used for local add/drop of a second direction signal.
It should be noted that, for the detailed description of the storage device provided in the fourth embodiment of the present application, reference may be made to the related description of the first embodiment of the present application, and details are not described here again.
Corresponding to the networking method provided in the first embodiment of the present application, a fifth embodiment of the present application provides a networking system, including: a local site and an intermediate site; the local site and the intermediate site are sites which are used for providing functions of punch-through, add/drop and optical balance and have scheduling dimensions smaller than a preset dimension threshold; the local station and the intermediate station are provided with a reconfigurable optical add-drop multiplexer network;
the reconfigurable optical add/drop multiplexer comprises a wavelength selection switch configured by adopting any networking method in the first embodiment of the application.
It should be noted that, for the detailed description of the system provided in the fifth embodiment of the present application, reference may be made to the related description of the first embodiment of the present application, and details are not described here again.
A network communication method according to a sixth embodiment of the present application includes:
the method comprises the following steps that a source local site sends signals through a reconfigurable optical add-drop multiplexer network arranged at the source local site;
the target local site receives a signal sent by a source local site through a reconfigurable optical add-drop multiplexer network arranged in the target local site; the reconfigurable optical add/drop multiplexer networking comprises a wavelength selection switch configured by any networking method in the first embodiment of the application.
Further, if the transmission distance between the source local station and the target local station is large, the intermediate station may forward the signal transmitted by the source local station.
The sixth embodiment of the present application further includes:
at least one intermediate site positioned between the source local site and the target local site receives signals sent by the source local site through a reconfigurable optical add-drop multiplexer contained in the intermediate site in sequence;
the reconfigurable optical add-drop multiplexer contained in the intermediate site performs punch-through, scheduling and optical equalization function processing on the signals sent by the source local site;
sending the signal sent by the source local site to a target local site through the intermediate site; the reconfigurable optical add-drop multiplexer networking contained in the intermediate site comprises a wavelength selection switch configured by any networking method in the first embodiment of the application;
the target local site receives the signal sent by the source local site through a reconfigurable optical add-drop multiplexer network arranged in the target local site, and the method comprises the following steps:
and the target local site receives the signal transmitted by the source local site and forwarded by the intermediate site through a reconfigurable optical add-drop multiplexer arranged in the target local site in a networking manner.
The source local site refers to a local site that sends a signal. And the source local site is used for completing local add/drop and optical balance functions.
The target local site refers to a local site that receives a signal transmitted by a source local site. And the target local site is used for completing local add/drop and optical balance functions.
And the intermediate station is used for completing the functions of signal feedthrough and optical equalization.
For example, as shown in fig. 1A, Site1 is a source local Site, Site9 is a target local Site, sites 6, 7, and 8 are intermediate sites, Site1 sends out signals through a reconfigurable optical add-drop multiplexer network arranged at the source local Site, and first sends the signals to Site6, where the reconfigurable optical add-drop multiplexer included in Site6 performs passing-through and scheduling processing on the signals sent by Site1, and sends the signals to Site 7; then a reconfigurable optical add-drop multiplexer contained in the Site7 carries out punch-through and scheduling processing on the signal sent by the Site1 and sends the signal to the Site 8; and then, after the reconfigurable optical add-drop multiplexer contained in the Site8 performs punch-through and scheduling processing on the signal sent by the Site1, the signal is sent to the Site9, and the Site9 receives the signal sent by the Site1 forwarded by the intermediate Site through the reconfigurable optical add-drop multiplexer network arranged at the target local Site.
Although the present application has been described with reference to the preferred embodiments, it is not intended to limit the present application, and those skilled in the art can make variations and modifications without departing from the spirit and scope of the present application, therefore, the scope of the present application should be determined by the claims that follow.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include non-transitory computer readable media (transient media), such as modulated data signals and carrier waves.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Claims (16)
1. A networking method, comprising:
setting at least one port in a first port group of a wavelength selective switch as a first group of directional ports; the wavelength selection switch is a component for building a reconfigurable optical add-drop multiplexer network;
setting at least one port in a second port group of the wavelength selective switch as a second group of directional ports, and configuring the first group of directional ports to pass through the second group of directional ports; wherein the wavelength selective switch comprises: a first port set and a second port set; the first set of directional ports comprises at least one directional port, the second set of directional ports comprises at least one directional port, and the directional dimensions of each directional port are different;
configuring cross connection of a first add/drop port and the first group of directional ports; the first add/drop port is a port in the second port group, and is used for local add/drop of a first direction signal;
configuring cross connection between a second uplink port and a second downlink port and the second group of directional ports; and the second add/drop port is a port in the first port group and is used for local add/drop of a second direction signal.
2. The method of claim 1, wherein configuring the first set of directional ports to pass through with the second set of directional ports comprises:
configuring any port of the first set of directional ports to pass through any port of the second set of directional ports.
3. The method of claim 2, wherein the first set of directional ports comprises at least two ports;
the configuring the first set of directional ports to pass through with the second set of directional ports further comprises:
configuring two ports included in the first set of directional ports to pass through.
4. The method of claim 3, wherein the first set of directional ports includes two ports, a first directional port and a second directional port; the configuring of the first set of directional ports comprises two port feedthroughs, comprising:
setting a port except for a second group of directional ports in the second port group as a first transit port;
and configuring the first direction port to be in cross connection with the first transit port, and configuring the first transit port to be in cross connection with the second direction port, wherein the first direction port passes through the first transit port and penetrates through the second direction port.
5. The method of claim 4, further comprising:
and amplifying the signal passing through the first transit port by using a gain optical amplifier device, so as to compensate the through insertion loss from the first direction port to the first transit port or the through insertion loss from the first transit port to the second direction port.
6. The method of claim 2, wherein the second set of directional ports comprises at least two ports;
the configuring the first set of directional ports to pass through with the second set of directional ports further comprises:
configuring two ports comprised by the second set of directional ports to pass through.
7. The method of claim 6, wherein the second set of directional ports includes two ports, a third directional port and a fourth directional port; the configuring of the second set of directional ports comprises two port feedthroughs, comprising:
setting a port out of a first group of directional ports in the first port group as a second transit port;
and configuring the cross connection between the third direction port and the second transit port, and configuring the cross connection between the second transit port and the fourth direction port, wherein the third direction port passes through the second transit port and penetrates through the fourth direction port.
8. The method of claim 7, further comprising:
and amplifying the signal passing through the first transit port by using a gain optical amplifier device, so as to compensate the through insertion loss from the third direction port to the second transit port or the through insertion loss from the second transit port to the fourth direction port.
9. The method of claim 1, further comprising:
before the signal reaches the first add-drop port or the second add-drop port, an optical splitter is connected in the add-drop direction to realize direction-independent signal up and down.
10. The method of claim 1, further comprising:
when the number of the upper and lower wave bands of the signal is larger than that of the first upper and lower path ports, at least one upper and lower path port in the first upper and lower path ports is connected with a multiplexer-demultiplexer; alternatively, the first and second electrodes may be,
and when the number of the upper and lower wave bands of the signal is greater than that of the second upper and lower path ports, at least one upper and lower path port in the second upper and lower path ports is connected with the multiplexer-demultiplexer.
11. A networking device, comprising:
a first group of directional port setting units, configured to set at least one port in a first port group of the wavelength selective switch as a first group of directional ports; the wavelength selection switch is a component for building a reconfigurable optical add-drop multiplexer network;
a second group of directional ports setting unit, configured to set at least one port in a second port group of the wavelength selective switch as a second group of directional ports, and configure the first group of directional ports to pass through the second group of directional ports; wherein the wavelength selective switch comprises: a first port set and a second port set; wherein the first set of directional ports comprises at least one directional port, the second set of directional ports comprises at least one directional port, and the directional dimensions of each directional port are different;
the first add-drop port configuration unit is used for configuring the cross connection between a first add-drop port and the first group of directional ports; the first add/drop port is a port in the second port group, and is used for local add/drop of a first direction signal;
a second add/drop port configuration unit, configured to configure cross connection between a second add/drop port and the second group of directional ports; and the second add/drop port is a port in the first port group and is used for local add/drop of a second direction signal.
12. An electronic device, comprising:
a processor; and
a memory for storing a program of a networking method, wherein the following steps are executed after the device is powered on and the program of the networking method is run by the processor:
setting at least one port in a first port group of a wavelength selective switch as a first group of directional ports; the wavelength selection switch is a component for building a reconfigurable optical add-drop multiplexer network;
setting at least one port in a second port group of the wavelength selective switch as a second group of directional ports, and configuring the first group of directional ports to pass through the second group of directional ports; wherein the wavelength selective switch comprises: a first port set and a second port set; wherein the first set of directional ports comprises at least one directional port, the second set of directional ports comprises at least one directional port, and the directional dimensions of each directional port are different;
configuring cross connection of a first add/drop port and the first group of directional ports; the first add/drop port is a port in the second port group, and is used for local add/drop of a first direction signal;
configuring cross connection between a second uplink port and a second downlink port and the second group of directional ports; and the second add/drop port is a port in the first port group and is used for local add/drop of a second direction signal.
13. A storage device, storing a program of a networking method, the program being executed by a processor to perform the steps of:
setting at least one port in a first port group of a wavelength selective switch as a first group of directional ports; the wavelength selection switch is a component for building a reconfigurable optical add-drop multiplexer network;
setting at least one port in a second port group of the wavelength selective switch as a second group of directional ports, and configuring the first group of directional ports to pass through the second group of directional ports; wherein the wavelength selective switch comprises: a first port set and a second port set; wherein the first set of directional ports comprises at least one directional port, the second set of directional ports comprises at least one directional port, and the directional dimensions of each directional port are different;
configuring cross connection of a first add/drop port and the first group of directional ports; the first add/drop port is a port in the second port group, and is used for local add/drop of a first direction signal;
configuring cross connection between a second uplink port and a second downlink port and the second group of directional ports; and the second add/drop port is a port in the first port group and is used for local add/drop of a second direction signal.
14. A networking system, comprising: a local site and an intermediate site; the local site and the intermediate site are sites which are used for providing functions of punch-through, add/drop and optical balance and have scheduling dimensions smaller than a preset dimension threshold; the local station and the intermediate station are provided with a reconfigurable optical add-drop multiplexer network;
the reconfigurable optical add-drop multiplexer networking comprises a wavelength selection switch configured by the networking method of any one of claims 1 to 10.
15. A network communication method, comprising:
the method comprises the following steps that a source local site sends signals through a reconfigurable optical add-drop multiplexer network arranged at the source local site;
the target local site receives a signal sent by a source local site through a reconfigurable optical add-drop multiplexer network arranged in the target local site; wherein, the reconfigurable optical add-drop multiplexer network comprises a wavelength selection switch configured by the networking method of any one of claims 1 to 10.
16. The method of claim 15, further comprising:
at least one intermediate site positioned between the source local site and the target local site receives signals sent by the source local site through a reconfigurable optical add-drop multiplexer contained in the intermediate site in sequence;
the reconfigurable optical add-drop multiplexer contained in the intermediate site performs punch-through, scheduling and optical equalization function processing on the signals sent by the source local site;
sending the signal sent by the source local site to a target local site through the intermediate site; wherein, the reconfigurable optical add-drop multiplexer network contained in the intermediate site comprises a wavelength selection switch configured by the networking method according to any one of claims 1 to 10;
the target local site receives the signal sent by the source local site through a reconfigurable optical add-drop multiplexer network arranged in the target local site, and the method comprises the following steps:
and the target local site receives the signal transmitted by the source local site and forwarded by the intermediate site through a reconfigurable optical add-drop multiplexer arranged in the target local site in a networking manner.
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| CN102868476A (en) * | 2012-09-12 | 2013-01-09 | 武汉邮电科学研究院 | ROADM (Reconfigurable Optical Add Drop Multiplexer) system for selecting cross-linking connection matrix based on wavelength |
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