CN104022927A - Fixed mobile convergence wavelength division access ring and access method - Google Patents
Fixed mobile convergence wavelength division access ring and access method Download PDFInfo
- Publication number
- CN104022927A CN104022927A CN201410209805.7A CN201410209805A CN104022927A CN 104022927 A CN104022927 A CN 104022927A CN 201410209805 A CN201410209805 A CN 201410209805A CN 104022927 A CN104022927 A CN 104022927A
- Authority
- CN
- China
- Prior art keywords
- oadm
- otu
- optical fiber
- port
- node
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Small-Scale Networks (AREA)
- Optical Communication System (AREA)
Abstract
The invention discloses a fixed mobile convergence wavelength division access ring and an access method and relates to the metro area access field. The access ring takes CO OLT as a network convergent point to form annular topology, the ring internally comprises a main fiber and a standby fiber, each area business is accessed to OADM through R-OTU; under the main state, in a downlink direction, a signal sent by the CO OLT to the OADM realizes clockwise transmission in the main fiber; in an uplink direction, a signal sent by the OADM to the CO OLT realizes anticlockwise transmission in the standby fiber; in a standby state, after a node next to a fault point switches a signal to the standby fiber, a signal sent by the CO OLT to the OADM realizes anticlockwise transmission in the standby fiber, and a signal sent by the OADM to the CO OLT realizes clockwise transmission in the standby fiber. The fixed mobile convergence wavelength division access ring can satisfy low cost requirements of fixed access, mobile backhaul and robustness requirements of a great customer hotline, is convenient for network establishment and operation and maintenance, is consistent with trends of large bandwidth access and network flatness, is flexible in bandwidth distribution and is easy to upgrade.
Description
Technical field
The present invention relates to metropolitan area access field, be specifically related to a kind of admittedly moving and merge wavelength-division access ring and cut-in method.
Background technology
According to " broadband China " strategy, in order to meet the sustainable growth of user's access bandwidth demand, Chinese flourishing urban subscriber's access bandwidth should reach 1Gb/s (G bits per second) when the year two thousand twenty.Owing to being in the face of vast domestic consumer, the most important requirement of access technology is low-cost.Therefore the PON (Passive Optical Network, EPON) that, cost aspect has an advantage becomes the major technique of access field because of large capacity, large bandwidth.EPON (Ethernet Passive Optical Network, Ethernet passive optical network)/GPON (Gigabit-Capable PON, G bit Ethernet passive optical network) commercial on a large scale in the whole world, 10GEPON/GPON progressively comes into the market, standardization body is formulating the more jumbo light access technologies of future generation such as TWDM-PON (Time and Wavelength Division Multiplexing PON, time-division Wave division multiplexing passive optical network).
Mobile broadband facilitates characteristic to become gradually another kind of main access way with it.In order to improve the speed of mobile broadband, operator is carrying out 4G/LTE (Long Term Evolution, Long Term Evolution) and is building, and the bandwidth demand of base station is brought up to Gb/s magnitude by 100,000,000 of the 2G/3G epoch.4G mobile retransmission and forward pass network not only continue to emphasize high robust and OAM (Operation Administration and Maintenance, operation, management, maintenance) ability, and important requirement significantly promotes bandwidth ability.In addition,, along with the sustainable development of the technology such as internet, Internet of Things, cloud computing, the integration of three networks and business, the bandwidth of big customer's special line, WiFi (Wireless Fidelity, wireless compatibility authentication) focus etc. also requires to continue to increase.
In communication network development course, the fixed broadband that has formed gradually operator accesses/converges net, mobile retransmission net and separately builds the situation of safeguarding, the former focuses on building dimension cost, and the latter emphasizes network quality.Along with the propelling of telecommunications reform, operator develops into full-service operator, admittedly move to merge, rises to carrier market Competitive Needs, and it is to alleviate cost pressure, realize the basis of admittedly moving integrated services that the consolidating of metro edge moves the network integration.But, the technology of PON class can not meet the high-quality requirement of mobile retransmission, big customer's special line etc., MSTP (Multi-Service Transmission Platform, multi-service transport platform), PTN (Packet Transport Network, the technology such as Packet Transport Network)/IPRAN (IP Radio Access Network Carrier, IPization wireless backhaul bearer network) make it not access means as domestic consumer on cost.Therefore, the communications field need a kind of in network quality and build on dimension cost, meet consolidate, move, the multiple business feature such as special line, what be suitable for metropolitan area input field consolidates, moves UNE.
Summary of the invention
The object of the invention is in order to overcome the deficiency of above-mentioned background technology, provide a kind of admittedly moving to merge wavelength-division access ring and cut-in method, can meet the robustness requirement of low cost requirement, mobile retransmission and big customer's special line etc. of fixing access simultaneously, be convenient to networking and O&M, also meet the trend such as large bandwidth access, network flattening; Have allocated bandwidth characteristic flexible, that easily upgrade concurrently, be expected to become the metropolitan area fusion connecting system that meets operator's expectation.
The invention provides a kind of admittedly moving and merge wavelength-division access ring, comprise central machine room optical line terminal CO OLT, a m optical add/drop multiplexer OADM node and some far-end optical transport unit R-OTU, using CO OLT as networks converge point, CO OLT and m OADM node forms ring topology jointly, m is more than or equal to 1 positive integer, total m+1 node in this ring topology, each node divides eastern E, western W both direction, with E, W, represent the annexation of m+1 node in ring topology, in the direction of the clock, the E of last node is to the W with a rear node to being connected; Except CO OLT, the OADM node in ring topology by be numbered clockwise OADM1, OADM2 ..., OADM m-1, OADM m;
In described ring topology, have primary optical fiber and standby optical fiber, ring topology each area business around accesses corresponding OADM node by R-OTU; Under master state: down direction, the signal that CO OLT is sent to OADM node is transmission clockwise in primary optical fiber, i.e. the W of a node from the E of last node is sent to; Up direction, the signal that OADM node is sent to CO OLT is transmission counterclockwise in primary optical fiber, i.e. the E of a node from the W of last node is sent to; Under stand-by state: before and after fault point, next-door neighbour's node is switched to signal after standby optical fiber, down direction, CO OLT is sent to signal transmission counterclockwise in standby optical fiber of OADM node; Up direction, OADM node is sent to signal transmission clockwise in standby optical fiber of CO OLT; While breaking down between adjacent two OADM nodes in ring topology, the connection between two OADM nodes that break down is detoured through standby optical fiber, under stand-by state, works; Signal between all the other OADM nodes transmits in primary optical fiber, under master state, works;
CO OLT is equipped with some local side optical transport unit O-OTU, each O-OTU m OADM node in ring topology realized up/down row loop with corresponding R-OTU: each OADM node carries out straight-through, the up/down of each wavelength channel, R-OTU is by OADM node up/down loop, corresponding one by one according to up-downgoing wavelength arrangement, up between O-OTU and R-OTU, downstream wavelength meets and interleaves Rankine-Hugoniot relations.
On the basis of technique scheme, described CO OLT comprises that k upper united mouth, convergence module, some O-OTU, a descending wavelength division multiplexer, a descending image intensifer, a upgoing wave division multiplexer, a up image intensifer, a light interleave filter and 2 * 2 optical switches, k is positive integer, k upper united mouth is connected with Metro core network respectively, and convergence module completes converging of miscellaneous service in all O-OTU; The transmit port of all O-OTU is all connected with descending wavelength division multiplexer, and the receiving port of all O-OTU is all connected with upgoing wave division multiplexer, the respectively corresponding downstream wavelength passage of each O-OTU and a upgoing wave long-channel; Descending wavelength division multiplexer interleaves filter by descending image intensifer and light and is connected, and upgoing wave division multiplexer interleaves filter by up image intensifer and light and is connected, and light interleaves the separation that filter completes up-downgoing wavelength;
Light interleaves filter and is connected with standby optical fiber with the primary optical fiber in ring topology respectively by 2 * 2 optical switches: 2 * 2 optical switches comprise 4 ports: the first port, the second port, the 3rd port, the 4th port, under master state, the first port and Si port UNICOM, the second port and San port UNICOM; While being switched to stand-by state, the first port and San port UNICOM, the second port and Si port UNICOM;
The first port of 2 * 2 optical switches is connected with the standby optical fiber Eb of east orientation, the output that the second port and the light of 2 * 2 optical switches interleaves filter is connected, the 3rd port of 2 * 2 optical switches is connected with the primary optical fiber of east orientation, and the 4th port of 2 * 2 optical switches is connected to standby optical fiber with west.
On the basis of technique scheme, each the OADM node in described ring topology includes a wavelength-selective switches WSS, west to 2 * 2 optical switch OS
w, east orientation 2 * 2 optical switch OS
ewith some R-OTU, WSS comprises a key light mouth, a straight-through light mouth and some this locality light mouth up and down, and WSS completes the up/down loop of local wavelength, and other wavelength is straight-through; OS
w, OS
eidentical with the characteristic of 2 * 2 optical switches in CO OLT, OS
wthe first port and OS
ethe first port be connected, OS
wthe 3rd port be connected with the key light mouth of WSS, OS
wthe second port be connected to primary optical fiber with west, OS
wthe 4th port be connected to standby optical fiber with west; OS
ethe 3rd port be connected with the straight-through light mouth of WSS, OS
ethe second port be connected with the primary optical fiber of east orientation, OS
ethe 4th port be connected with the standby optical fiber of east orientation;
While breaking down between adjacent two OADM nodes in ring topology, only need two optical switches that are close to fault point to switch, the signal between two OADM nodes that break down detours through standby optical fiber, under stand-by state, works; Other optical switch is failure to actuate, and the signal between all the other OADM nodes transmits in primary optical fiber, under master state, works.
On the basis of technique scheme, the line interface of described R-OTU comprises circuit transmission interface L
tXwith circuit receiving interface L
rX, this locality of WSS up and down light mouth respectively with the circuit transmission interface L of R-OTU
tXwith circuit receiving interface L
rXbe connected.
On the basis of technique scheme, the customer side interface of described R-OTU comprises a customer side transmission interface C
tXwith a customer side receiving interface C
rX.
On the basis of technique scheme, described R-OTU adopts branch road multiple connection technology that many group customer side interfaces are provided, and R-OTU comprises a plurality of customer side transmission interface C
tXwith a plurality of customer side receiving interface C
rX.
On the basis of technique scheme, described R-OTU access FTTx user, digital subscriber line access multiplex, big customer's special line or mobile base station.
On the basis of technique scheme, described Metro core network comprises IP/MPLS core net, mobile core network.
On the basis of technique scheme, when working in O-OTU, the R-OTU of a pair of up/down row wavelength and access for PON, physical layer function in PON realizes in the customer side interface of R-OTU, and the media interviews control/Transmission Convergence function in PON realizes in O-OTU.
The present invention also provides a kind of and moves and merge wavelength-division cut-in method based on consolidating of above-mentioned access ring, comprises the following steps:
Under master state: down direction, the signal that CO OLT is sent to OADM node is transmission clockwise in primary optical fiber, i.e. the W of a node from the E of last node is sent to; Up direction, the signal that OADM node is sent to CO OLT is transmission counterclockwise in primary optical fiber, i.e. the E of a node from the W of last node is sent to; The satisfied Rankine-Hugoniot relations that interleaves of up, downstream wavelength;
Under stand-by state: before and after fault point, next-door neighbour's node is switched to signal after standby optical fiber, down direction, CO OLT is sent to signal transmission counterclockwise in standby optical fiber of OADM node; Up direction, OADM node is sent to signal transmission clockwise in standby optical fiber of CO OLT;
While breaking down between adjacent two OADM nodes in ring topology, the connection between two OADM nodes that break down is detoured through standby optical fiber, under stand-by state, works; Signal between all the other OADM nodes transmits in primary optical fiber, under master state, works.
Compared with prior art, advantage of the present invention is as follows:
(1) the present invention adopts OADM to realize length flexible distribution, only needs a WSS (OADM in common wdm system needs 4 WSS), can effectively reduce the cost of OADM, meets the low-cost requirement of fixing access.
(2) the present invention utilizes star-like feature (all business are concentrated to the central office) Cheng Huan of business in metropolitan area access, and at CO OLT place, finishing service converges, and realizes Loop Protection, to reach the robustness requirement of mobile retransmission and big customer's special line etc.
(3) the present invention can realize the unified access of 0/1 layer network of all business such as fixed broadband, movement, special line of operator, is convenient to networking and O&M; Can avoid the electric territory that MSTP, IPRAN/PTN etc. are complicated to process, green energy conservation.
(4) the present invention, by the different arrangement of up-downgoing wavelength, avoids rayieigh backscatter and the impact of reflection on transmission quality.
(5) the present invention adopts wavelength-division multiplex technique to realize large bandwidth access, realizes the super large covering radius of this convergent type access network by light amplification and OTU, meets the trend such as large bandwidth access, network flattening.
(6) various/PON technology of constraint for to(for) wavelength planning is broken in the wavelength conversion of the present invention by OTU, / coexisting and as required upgrading for PON technology various to realize, have allocated bandwidth characteristic flexible, that easily upgrade concurrently, be expected to become the metropolitan area fusion connecting system that meets operator's expectation.
Accompanying drawing explanation
Fig. 1 moves the structured flowchart that merges wavelength-division access ring admittedly in the embodiment of the present invention.
Fig. 2 is the structured flowchart of CO OLT in the embodiment of the present invention.
Fig. 3 is the structured flowchart of OADM node in the embodiment of the present invention.
Embodiment
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
Shown in Figure 1, the embodiment of the present invention provides a kind of admittedly moving to merge wavelength-division access ring, comprise CO (Central Office, central machine room) OLT (Optical Line Terminal, optical line terminal), m OADM (Optical Add-Drop Multiplexer, optical add/drop multiplexer) node and some R-OTU (Remote-Optical Transport Unit, far-end optical transport unit), using CO OLT as networks converge point, CO OLT and m OADM node forms ring topology jointly, m is more than or equal to 1 positive integer, total m+1 node in this ring topology, each node divides E (east), W (west) both direction, with E (east), W (west) represents the annexation of m+1 node in ring topology, in the direction of the clock, the E of last node is to the W with a rear node to being connected, except CO OLT, the OADM node in ring topology by be numbered clockwise OADM1, OADM2 ..., OADM m-1, OADM m, in ring topology, there are two optical fiber: primary (work) optical fiber Fw and standby (backup) optical fiber Fb, ring topology each region (Area) business around accesses corresponding OADM node by R-OTU.
The embodiment of the present invention also provides a kind of and moves and merge wavelength-division cut-in method based on consolidating of above-mentioned access ring, comprises the following steps:
Under master state: down direction, the signal that CO OLT is sent to OADM node is transmission clockwise in primary optical fiber, i.e. the W of a node from the E of last node is sent to; Up direction, the signal that OADM node is sent to CO OLT is transmission counterclockwise in primary optical fiber, i.e. the E of a node from the W of last node is sent to; Under stand-by state: before and after fault point, next-door neighbour's node is switched to signal after standby optical fiber, down direction, CO OLT is sent to signal transmission counterclockwise in standby optical fiber of OADM node; Up direction, OADM node is sent to signal transmission clockwise in standby optical fiber of CO OLT.
While breaking down between adjacent two OADM nodes in ring topology, for example: when the optical fiber in ring topology between OADM i and OADM i+1 breaks down, i is positive integer, connection between two OADM nodes that break down (being OADM i and OADM i+1) is detoured through standby optical fiber, under stand-by state, works; Signal between all the other OADM nodes transmits in primary optical fiber, under master state, works.
CO OLT is equipped with some O-OTU (Office-Optical Transport Unit, local side optical transport unit), each O-OTU m OADM node in ring topology realized up/down row loop with corresponding R-OTU: each OADM node carries out straight-through, the up/down of each wavelength channel, and R-OTU is by OADM node up/down loop.Corresponding one by one according to up-downgoing wavelength arrangement between O-OTU and R-OTU.
The satisfied Rankine-Hugoniot relations that interleaves of up, downstream wavelength.For example, up employing C wavelength, descending employing C+ wavelength; Or up employing L wavelength, descending employing L+ wavelength; Or can up employing C and L, descending employing C+ and L+.Certainly, C and C+, or L and L+, can also exchange.In a word, up, downstream wavelength can arrange according to need, as long as guarantee the satisfied Rankine-Hugoniot relations that interleaves of up, downstream wavelength.
Shown in Figure 2, CO OLT comprises that k upper united mouth, convergence module, some O-OTU, a descending wavelength division multiplexer, a descending image intensifer, a upgoing wave division multiplexer, a up image intensifer, a light interleave filter and 2 * 2 optical switches, k is positive integer, k upper united mouth is connected with Metro core network respectively, and Metro core network comprises IP/MPLS core net, mobile core network etc.Convergence module completes converging of miscellaneous service in all O-OTU; The transmit port of all O-OTU is all connected with descending wavelength division multiplexer, and the receiving port of all O-OTU is all connected with upgoing wave division multiplexer, the respectively corresponding downstream wavelength passage of each O-OTU and a upgoing wave long-channel; Descending wavelength division multiplexer interleaves filter by descending image intensifer and light and is connected, upgoing wave division multiplexer interleaves filter by up image intensifer and light and is connected, light interleaves the separation that filter completes up-downgoing wavelength, and light interleaves filter and is connected with standby optical fiber with the primary optical fiber in ring topology respectively by 2 * 2 optical switches.
2 * 2 optical switches comprise 4 ports: port one, port 2, port 3, port 4, and under master state, port one and port 4 UNICOMs, port 2 and port 3 UNICOMs; While being switched to stand-by state, port one and port 3 UNICOMs, port 2 and port 4 UNICOMs.
The port one of 2 * 2 optical switches is connected with the standby optical fiber Eb of east orientation, and the output that port 2 and the light of 2 * 2 optical switches interleaves filter is connected, and the port 3 of 2 * 2 optical switches is connected with the primary optical fiber Ew of east orientation, and the port 4 of 2 * 2 optical switches is connected to standby optical fiber Wb with west.
The satisfied Rankine-Hugoniot relations that interleaves of up, downstream wavelength.Take up employing C wavelength, descending employing C+ wavelength describes as example: the descending wavelength division multiplexer in Fig. 2 is C MUX (wavelength division multiplexer), upgoing wave division multiplexer is C+MUX, and it is C/C+Interleaver (light interleaves filter) that light interleaves filter.
Shown in Figure 3, each the OADM node in ring topology includes a WSS (Wavelength Selective Switch, wavelength-selective switches), west to 2 * 2 optical switches (OS, Optical Switcher) OS
w, east orientation 2 * 2 optical switch OS
ewith some R-OTU, WSS comprises a key light mouth, a straight-through light mouth and some this locality light mouth up and down, and WSS completes the up/down loop of local wavelength, and other wavelength is straight-through; OS
w, OS
eidentical with the characteristic of 2 * 2 optical switches in CO OLT, OS
wport one and OS
eport one be connected, OS
wport 3 be connected with the key light mouth of WSS, OS
wport 2 be connected to primary optical fiber Ww with west, OS
wport 4 be connected to standby optical fiber Wb with west; OS
eport 3 be connected with the straight-through light mouth of WSS, OS
eport 2 be connected with the primary optical fiber Ew of east orientation, OS
eport 4 be connected with the standby optical fiber Eb of east orientation.
While breaking down between adjacent two OADM nodes in ring topology, only need two optical switches that are close to fault point to switch, the signal between two OADM nodes that break down detours through standby optical fiber Fb, under stand-by state, works; Other optical switch is failure to actuate, and the signal between all the other OADM nodes transmits in primary optical fiber Fw, under master state, works.
For example: the optical fiber in ring topology between OADM i and OADM i+1 breaks down while disconnecting, the E of OADM i switches to optical switch, the W of OADM i+1 switches to optical switch, signal between OADM i and OADM i+1 detours through standby optical fiber Fb, other optical switch is failure to actuate, signal between all the other OADM nodes transmits in primary optical fiber Fw, under master state, works.
The line interface of R-OTU comprises circuit transmission interface L
tXwith circuit receiving interface L
rX, this locality of WSS up and down light mouth respectively with the circuit transmission interface L of R-OTU
tXwith circuit receiving interface L
rXbe connected.The customer side interface of R-OTU comprises a customer side transmission interface C
tXwith a customer side receiving interface C
rX; R-OTU also can adopt TMUX (TributaryMultiplexing, branch road multiple connection) technology that many group customer side interfaces are provided, and R-OTU comprises a plurality of customer side transmission interface C
tXwith a plurality of customer side receiving interface C
rX.If business is unidirectional, for example receive only or send, R-OTU only includes customer side transmission interface C
tXor only include customer side receiving interface C
rX.
R-OTU can access the business in the region 1 shown in Fig. 1, region 2, region 3, region 4, for example: FTTx (Fiber-to-the-x, optical fiber access) user, DSLAM (Digital Subscriber Line Access Multiplexer, digital subscriber line access multiplex), big customer's special line, mobile base station etc.
The some R-OTU that are connected with OADM node in ring topology, both can with the placement that exists together of this OADM node, can also place with the different place of OADM node as required, be for example placed in mobile base station or big customer place.
When working in O-OTU, the R-OTU of a pair of up/down row wavelength and access for PON, PHY in PON (Physical Layer, physical layer) layer function (as the reception etc. that happens suddenly) is realized in the customer side interface of R-OTU, MAC in PON (Media Access Control, media interviews control)/TC (Transmission Convergence, Transmission Convergence) function (as adaptation, Dynamic Bandwidth Allocation, range finding etc.) realizes in O-OTU.
Those skilled in the art can carry out various modifications and variations to the embodiment of the present invention, if these revise and modification within the scope of the claims in the present invention and equivalent technologies thereof, these modifications and modification are also within protection scope of the present invention.
The prior art that the content of not describing in detail in specification is known to the skilled person.
Claims (10)
1. one kind is moved fusion wavelength-division access ring admittedly, comprise central machine room optical line terminal CO OLT, a m optical add/drop multiplexer OADM node and some far-end optical transport unit R-OTU, using CO OLT as networks converge point, CO OLT and m OADM node forms ring topology jointly, m is more than or equal to 1 positive integer, total m+1 node in this ring topology, each node divides eastern E, western W both direction, with E, W, represent the annexation of m+1 node in ring topology, in the direction of the clock, the E of last node is to the W with a rear node to being connected; Except CO OLT, the OADM node in ring topology by be numbered clockwise OADM1, OADM2 ..., OADM m-1, OADM m, it is characterized in that:
In described ring topology, have primary optical fiber and standby optical fiber, ring topology each area business around accesses corresponding OADM node by R-OTU; Under master state: down direction, the signal that CO OLT is sent to OADM node is transmission clockwise in primary optical fiber, i.e. the W of a node from the E of last node is sent to; Up direction, the signal that OADM node is sent to CO OLT is transmission counterclockwise in primary optical fiber, i.e. the E of a node from the W of last node is sent to; Under stand-by state: before and after fault point, next-door neighbour's node is switched to signal after standby optical fiber, down direction, CO OLT is sent to signal transmission counterclockwise in standby optical fiber of OADM node; Up direction, OADM node is sent to signal transmission clockwise in standby optical fiber of CO OLT; While breaking down between adjacent two OADM nodes in ring topology, the connection between two OADM nodes that break down is detoured through standby optical fiber, under stand-by state, works; Signal between all the other OADM nodes transmits in primary optical fiber, under master state, works;
CO OLT is equipped with some local side optical transport unit O-OTU, each O-OTU m OADM node in ring topology realized up/down row loop with corresponding R-OTU: each OADM node carries out straight-through, the up/down of each wavelength channel, R-OTU is by OADM node up/down loop, corresponding one by one according to up-downgoing wavelength arrangement, up between O-OTU and R-OTU, downstream wavelength meets and interleaves Rankine-Hugoniot relations.
2. as claimed in claim 1 admittedly moving merged wavelength-division access ring, it is characterized in that: described CO OLT comprises that k upper united mouth, convergence module, some O-OTU, a descending wavelength division multiplexer, a descending image intensifer, a upgoing wave division multiplexer, a up image intensifer, a light interleave filter and 2 * 2 optical switches, k is positive integer, k upper united mouth is connected with Metro core network respectively, and convergence module completes converging of miscellaneous service in all O-OTU; The transmit port of all O-OTU is all connected with descending wavelength division multiplexer, and the receiving port of all O-OTU is all connected with upgoing wave division multiplexer, the respectively corresponding downstream wavelength passage of each O-OTU and a upgoing wave long-channel; Descending wavelength division multiplexer interleaves filter by descending image intensifer and light and is connected, and upgoing wave division multiplexer interleaves filter by up image intensifer and light and is connected, and light interleaves the separation that filter completes up-downgoing wavelength;
Light interleaves filter and is connected with standby optical fiber with the primary optical fiber in ring topology respectively by 2 * 2 optical switches: 2 * 2 optical switches comprise 4 ports: the first port, the second port, the 3rd port, the 4th port, under master state, the first port and Si port UNICOM, the second port and San port UNICOM; While being switched to stand-by state, the first port and San port UNICOM, the second port and Si port UNICOM;
The first port of 2 * 2 optical switches is connected with the standby optical fiber Eb of east orientation, the output that the second port and the light of 2 * 2 optical switches interleaves filter is connected, the 3rd port of 2 * 2 optical switches is connected with the primary optical fiber of east orientation, and the 4th port of 2 * 2 optical switches is connected to standby optical fiber with west.
3. as claimed in claim 2 admittedly moving merged wavelength-division access ring, it is characterized in that: each the OADM node in described ring topology includes a wavelength-selective switches WSS, west to 2 * 2 optical switch OS
w, east orientation 2 * 2 optical switch OS
ewith some R-OTU, WSS comprises a key light mouth, a straight-through light mouth and some this locality light mouth up and down, and WSS completes the up/down loop of local wavelength, and other wavelength is straight-through; OS
w, OS
eidentical with the characteristic of 2 * 2 optical switches in CO OLT, OS
wthe first port and OS
ethe first port be connected, OS
wthe 3rd port be connected with the key light mouth of WSS, OS
wthe second port be connected to primary optical fiber with west, OS
wthe 4th port be connected to standby optical fiber with west; OS
ethe 3rd port be connected with the straight-through light mouth of WSS, OS
ethe second port be connected with the primary optical fiber of east orientation, OS
ethe 4th port be connected with the standby optical fiber of east orientation;
While breaking down between adjacent two OADM nodes in ring topology, only need two optical switches that are close to fault point to switch, the signal between two OADM nodes that break down detours through standby optical fiber, under stand-by state, works; Other optical switch is failure to actuate, and the signal between all the other OADM nodes transmits in primary optical fiber, under master state, works.
4. as claimed in claim 3 admittedly moving merged wavelength-division access ring, it is characterized in that: the line interface of described R-OTU comprises circuit transmission interface L
tXwith circuit receiving interface L
rX, this locality of WSS up and down light mouth respectively with the circuit transmission interface L of R-OTU
tXwith circuit receiving interface L
rXbe connected.
5. as claimed in claim 3 admittedly moving merged wavelength-division access ring, it is characterized in that: the customer side interface of described R-OTU comprises a customer side transmission interface C
tXwith a customer side receiving interface C
rX.
6. as claimed in claim 3 admittedly moving merged wavelength-division access ring, it is characterized in that: described R-OTU adopts branch road multiple connection technology that many group customer side interfaces are provided, and R-OTU comprises a plurality of customer side transmission interface C
tXwith a plurality of customer side receiving interface C
rX.
7. consolidating as described in any one in claim 1 to 6 moves and merges wavelength-division access ring, it is characterized in that: described R-OTU access FTTx user, digital subscriber line access multiplex, big customer's special line or mobile base station.
8. consolidating as described in any one in claim 1 to 6 moves and merges wavelength-division access ring, it is characterized in that: described Metro core network comprises IP/MPLS core net, mobile core network.
9. consolidating as described in any one in claim 1 to 6 moves and merges wavelength-division access ring, it is characterized in that: when working in O-OTU, the R-OTU of a pair of up/down row wavelength and access for PON, physical layer function in PON realizes in the customer side interface of R-OTU, and the media interviews control/Transmission Convergence function in PON realizes in O-OTU.
10. based on consolidating of access ring described in any one in claim 1 to 9, move and merge a wavelength-division cut-in method, it is characterized in that, comprise the following steps:
Under master state: down direction, the signal that CO OLT is sent to OADM node is transmission clockwise in primary optical fiber, i.e. the W of a node from the E of last node is sent to; Up direction, the signal that OADM node is sent to CO OLT is transmission counterclockwise in primary optical fiber, i.e. the E of a node from the W of last node is sent to; The satisfied Rankine-Hugoniot relations that interleaves of up, downstream wavelength;
Under stand-by state: before and after fault point, next-door neighbour's node is switched to signal after standby optical fiber, down direction, CO OLT is sent to signal transmission counterclockwise in standby optical fiber of OADM node; Up direction, OADM node is sent to signal transmission clockwise in standby optical fiber of CO OLT;
While breaking down between adjacent two OADM nodes in ring topology, the connection between two OADM nodes that break down is detoured through standby optical fiber, under stand-by state, works; Signal between all the other OADM nodes transmits in primary optical fiber, under master state, works.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410209805.7A CN104022927B (en) | 2014-05-19 | 2014-05-19 | Gu move fusion wavelength-division access ring and cut-in method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410209805.7A CN104022927B (en) | 2014-05-19 | 2014-05-19 | Gu move fusion wavelength-division access ring and cut-in method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104022927A true CN104022927A (en) | 2014-09-03 |
| CN104022927B CN104022927B (en) | 2017-10-10 |
Family
ID=51439507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410209805.7A Active CN104022927B (en) | 2014-05-19 | 2014-05-19 | Gu move fusion wavelength-division access ring and cut-in method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104022927B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104618273A (en) * | 2015-01-23 | 2015-05-13 | 浪潮电子信息产业股份有限公司 | Control system of optical fiber interchangers and channel parser |
| CN104868968A (en) * | 2015-06-03 | 2015-08-26 | 武汉邮电科学研究院 | Wavelength division access protection method based on monitoring wavelength for wavelength division access protection ring |
| CN106130840A (en) * | 2016-07-15 | 2016-11-16 | 武汉邮电科学研究院 | A kind of fixing, mobile broadband fusion access network framework |
| CN109639387A (en) * | 2018-12-25 | 2019-04-16 | 苏州智汇云祥通信系统有限公司 | A kind of multisystem anti-interference filtration method based in digital display circuit transmission |
| CN112019262A (en) * | 2020-08-13 | 2020-12-01 | 武汉光迅科技股份有限公司 | Communication station, optical communication system, data transmission method, and storage medium |
| WO2021047663A1 (en) * | 2019-09-12 | 2021-03-18 | 中兴通讯股份有限公司 | Mobile fronthaul oam information transmission method, apparatus, device, and medium |
| WO2022267544A1 (en) * | 2021-06-22 | 2022-12-29 | 华为技术有限公司 | Communication device, communication method, and communication system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201054594Y (en) * | 2007-06-15 | 2008-04-30 | 上海未来宽带技术及应用工程研究中心有限公司 | Optical passive network backup device |
| CN101267259A (en) * | 2008-05-13 | 2008-09-17 | 杭州华三通信技术有限公司 | Optical fiber protection system and device in passive optical network |
| US20100239243A1 (en) * | 2007-12-07 | 2010-09-23 | Huawei Technologies Co., Ltd. | Pon ring system, and method for realizing primary and backup link protection in pon |
| CN103281152A (en) * | 2013-05-29 | 2013-09-04 | 武汉邮电科学研究院 | Convergence type metropolitan area wavelength division access network system and accessing method |
| CN103746747A (en) * | 2014-01-08 | 2014-04-23 | 武汉邮电科学研究院 | Metro wavelength division convergence optical network access system and method |
-
2014
- 2014-05-19 CN CN201410209805.7A patent/CN104022927B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201054594Y (en) * | 2007-06-15 | 2008-04-30 | 上海未来宽带技术及应用工程研究中心有限公司 | Optical passive network backup device |
| US20100239243A1 (en) * | 2007-12-07 | 2010-09-23 | Huawei Technologies Co., Ltd. | Pon ring system, and method for realizing primary and backup link protection in pon |
| CN101267259A (en) * | 2008-05-13 | 2008-09-17 | 杭州华三通信技术有限公司 | Optical fiber protection system and device in passive optical network |
| CN103281152A (en) * | 2013-05-29 | 2013-09-04 | 武汉邮电科学研究院 | Convergence type metropolitan area wavelength division access network system and accessing method |
| CN103746747A (en) * | 2014-01-08 | 2014-04-23 | 武汉邮电科学研究院 | Metro wavelength division convergence optical network access system and method |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104618273A (en) * | 2015-01-23 | 2015-05-13 | 浪潮电子信息产业股份有限公司 | Control system of optical fiber interchangers and channel parser |
| CN104618273B (en) * | 2015-01-23 | 2017-07-28 | 浪潮电子信息产业股份有限公司 | The control system and channel resolver of a kind of optical fiber switch |
| CN104868968A (en) * | 2015-06-03 | 2015-08-26 | 武汉邮电科学研究院 | Wavelength division access protection method based on monitoring wavelength for wavelength division access protection ring |
| CN104868968B (en) * | 2015-06-03 | 2017-10-10 | 武汉邮电科学研究院 | The wavelength-division based on supervisory wavelength for accessing protection ring for wavelength-division accesses guard method |
| CN106130840A (en) * | 2016-07-15 | 2016-11-16 | 武汉邮电科学研究院 | A kind of fixing, mobile broadband fusion access network framework |
| CN106130840B (en) * | 2016-07-15 | 2019-04-30 | 武汉邮电科学研究院 | A kind of fixation, mobile broadband fusion access planar network architecture |
| CN109639387A (en) * | 2018-12-25 | 2019-04-16 | 苏州智汇云祥通信系统有限公司 | A kind of multisystem anti-interference filtration method based in digital display circuit transmission |
| CN109639387B (en) * | 2018-12-25 | 2020-11-10 | 苏州智汇云祥通信系统有限公司 | Multi-system anti-interference filtering method based on digital system transmission |
| WO2021047663A1 (en) * | 2019-09-12 | 2021-03-18 | 中兴通讯股份有限公司 | Mobile fronthaul oam information transmission method, apparatus, device, and medium |
| CN112019262A (en) * | 2020-08-13 | 2020-12-01 | 武汉光迅科技股份有限公司 | Communication station, optical communication system, data transmission method, and storage medium |
| WO2022267544A1 (en) * | 2021-06-22 | 2022-12-29 | 华为技术有限公司 | Communication device, communication method, and communication system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104022927B (en) | 2017-10-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104022927B (en) | Gu move fusion wavelength-division access ring and cut-in method | |
| CN103281152B (en) | Convergent type metro area Wavelength Division access network system and cut-in method | |
| US10050711B2 (en) | Optical transport network | |
| JP5460886B2 (en) | Logical link management method and communication apparatus | |
| US20130089336A1 (en) | Apparatus for communicating a plurality of antenna signals at different optical wavelengths | |
| US20140233954A1 (en) | Link establishment method for multi-wavelength passive optical network system | |
| CN105594143A (en) | Method for producing aphal -halogenoacetophenon compound, and aphal-bromoacetophenon compound | |
| CN105122834A (en) | Communications network | |
| JP5894094B2 (en) | Distributed wireless communication base station system, OLT unit, and ONU unit | |
| De Andrade et al. | Passive optical network (PON) supported networking | |
| Tsagklas et al. | A survey on radio-and-fiber FiWi network architectures | |
| JPWO2011145218A1 (en) | Optical communication system and communication apparatus | |
| CN104868968B (en) | The wavelength-division based on supervisory wavelength for accessing protection ring for wavelength-division accesses guard method | |
| EP3123646B1 (en) | Protection switching across interconnecting node | |
| CN108092709B (en) | Protection switching method in passive optical network, optical line terminal and optical network device | |
| EP3038279B1 (en) | Bandwidth map update method and device | |
| JP2013506329A (en) | Passive optical network apparatus and method | |
| CN109995635A (en) | PTN group-network construction based on 5G bearer network | |
| CN105049112B (en) | Wavelength-division access protection ring based on supervisory wavelength | |
| JP2012204863A (en) | Network system, communication control node, communication controlled node, and band control method | |
| CN113950062A (en) | Home broadband device supporting 5G signal coverage | |
| US20240097790A1 (en) | Communication apparatus, communication system, storage medium, and communication method | |
| JP2011176695A (en) | Optical transmission apparatus, optical transmission system, and optical transmission method | |
| JP2013046132A (en) | Communication system and master station device | |
| CN103746747A (en) | Metro wavelength division convergence optical network access system and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 430074, No. 88, postal academy road, Hongshan District, Hubei, Wuhan Patentee after: Wuhan post and Telecommunications Science Research Institute Co., Ltd. Address before: 430074, No. 88, postal academy road, Hongshan District, Hubei, Wuhan Patentee before: Wuhan Inst. of Post & Telecom Science |