CN1305280C - Establishing method for parallel layer light mark exchanging path in layer light network - Google Patents
Establishing method for parallel layer light mark exchanging path in layer light network Download PDFInfo
- Publication number
- CN1305280C CN1305280C CNB2004100781394A CN200410078139A CN1305280C CN 1305280 C CN1305280 C CN 1305280C CN B2004100781394 A CNB2004100781394 A CN B2004100781394A CN 200410078139 A CN200410078139 A CN 200410078139A CN 1305280 C CN1305280 C CN 1305280C
- Authority
- CN
- China
- Prior art keywords
- routed domain
- mouthpiece
- network element
- message
- connection
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The present invention relates to an establishing method for a parallel level optical label switch path in a level optical network, which belongs to the field of an optical communication technique. In order to solve the problems in level route architecture and an optical network of a large scale that a route is difficult to calculate, and the construction time of the optical label switch path (O-LSP) is overlong, the present invention provides a parallel distributed level route signaling method which uses a parallel resource allocation mechanism, and therefore, the optical label switch path is established quickly for the optical network which is provided with a level structure in the method of the level route.
Description
Technical field
The present invention relates to the method for building up of a kind of distributed signal interchange channel, the foundation of particularly distributed, dynamic in the hierarchical structure optical-fiber network, level route belongs to the optical communication technology field.
Background technology
International Telecommunications Union's tissue (ITU-T) is positioned ASON (ASON/ASTN) for the global unified net that transmits, and estimates that have thousands of switch future and millions of terminal node is linked in this network.For so huge network, manage if all network equipments are placed in the single routed domain, will bring problems to route and connection management etc., as: individual node need be safeguarded too huge routing table; The distribution of Routing Protocol topology information is too frequent, brings serious burden for the bandwidth of signaling network, the processing of signaling; Network topological convergence speed is received restriction, the speed of influence calling/establishment of connection and protection/recovery; Also require the support of multilayer route technology based on the multi-granule exchange of GMPLS.Therefore, with different levels network routing architecture becomes the inevitable choice of ASON.For adapting to this demand for development of ASON routing architecture, the relation that has G.8080 provided routed domain level and subnet point set (SNPP) that ITU-T drafts, G.7715/Y.1706 set forth routing infrastructure and the demand of ASON, the OIF2002.23.06 of optical interconnection forum (OIF) and OIF2002.23.08 etc. have then provided a kind of thought that realizes of ASON layering route.
At present, in ASON, signal interchange channel (O-LSP) realizes by route (as OSPF OSPF-TE) and signaling protocol (as RSVP-TE).Wherein, route is calculated and is limited in planar network or two-tier network, and signaling procedure also as the RSVP-TE agreement is defined, adopts hop-by-hop process from the source to the destination, serial simultaneously.These methods are applicable to the optical-fiber network that scale is smaller.But these methods be applied to based on the level routing architecture, during the sizable optical-fiber network of scale, the overlong time that difficulty that route is calculated and O-LSP set up will cause the impracticable of these methods.
Summary of the invention
The present invention is for solving the problems of the technologies described above, propose a kind of have parallel characteristics, distributed level route Signalling method, this method can be set up signal interchange channel (O-LSP) in the mode of level route fast for the optical-fiber network with hierarchical structure.
The method for building up of the parallel level signal interchange channel in the lamina optical network that the present invention proposes may further comprise the steps:
1) after the control plane of lamina optical network is received the connection request that the user sends, the optical-fiber network gateway network element mark of described connection request correspondence is transmitted to the mouthpiece of the superiors' routed domain;
The mouthpiece of the superiors' routed domain is transmitted to optical-fiber network gateway network element mark the entrance network element of this mouthpiece place routed domain, calculate the route of this connection request in this layer routed domain by described entrance network element, and described route resource reserved, comprise strategy based on what G.8080 International Telecommunications Union's tissue advised then, judge the gateway network element mark of following one deck routed domain that this route will cover, and be transmitted to the mouthpiece of following one deck routed domain that will cover by the mouthpiece of this layer routed domain concurrently;
If the entrance network element of described routed domain is found this layer routed domain because of inadequate resource, do not satisfy the required route of this connection request, then send the message of connection failure to the user through this layer mouthpiece;
2) after the mouthpiece of the relevant routed domain of each layer receives the gateway network element mark of last layer routed domain in the middle of, it is transmitted to the entrance network element of each mouthpiece place routed domain, calculate the route of this connection request in each relevant routed domain of this layer by each entrance network element, and described route resource reserved, comprise strategy based on what G.8080 International Telecommunications Union's tissue advised then, judge the gateway network element mark of following one deck routed domain that this route will cover, and be transmitted to the mouthpiece of following one deck routed domain that will cover by the mouthpiece of each relevant routed domain of this layer concurrently;
If the entrance network element of a certain routed domain in intermediate layer is found this routed domain because of inadequate resource, can't satisfy the required route of this connection request, then send connection failure message to the relevant routed domain mouthpiece of last layer through this routed domain mouthpiece; After last layer routed domain mouthpiece received down one deck routed domain mouthpiece connection failure message, discharging relevant routed domain was this connection request institute reserved resource, sent connection failure message for simultaneously the relevant routed domain mouthpiece of its last layer;
3) the relevant routed domain mouthpiece of orlop is transmitted to the gateway network element mark that receives the entrance network element of each mouthpiece place routed domain, calculate the route of this connection request in each relevant routed domain of this layer, and send to connect along this route and set up message, related network elements is the parallel local resource that distributes of route for this reason;
If the signal interchange channel is set up successfully in the orlop routed domain, then this routed domain mouthpiece sends the successful connection acknowledge message to last layer routed domain mouthpiece; The mouthpiece of the relevant routed domain of middle each layer successively upwards transmits the successful connection acknowledge message, sends resource occupation message to this routed domain related network elements simultaneously, until the superiors;
If failure is set up in the signal interchange channel in the orlop routed domain, then this routed domain mouthpiece sends connection failure message to last layer routed domain mouthpiece; The mouthpiece of the relevant routed domain of middle each layer successively upwards transmits connection failure message, sends resource release message to this territory simultaneously, until the superiors;
4) mouthpiece of the superiors' routed domain receives the successful connection acknowledge message that all routed domain mouthpieces of this join dependency send, and represents this successful connection, and sends the successful connection acknowledge message by the mouthpiece of the superiors' routed domain to the user;
The mouthpiece of the superiors' routed domain receives the connection failure message that the routed domain of this join dependency sends, and represents this connection failure; This mouthpiece sends connection failure message to the user, simultaneously to lower floor also do not obtain connection failure message, send resource release message for routed domain of this connection occupied resource; After relevant routed domain is received resource release message, discharge the shared Internet resources of promising this connection of institute.
The present invention can set up signal interchange channel (O-LSP) with the mode of level route for the optical-fiber network with hierarchical structure fast owing to introduce the method for parallel signaling.
Description of drawings
Fig. 1 is hierarchical structure optical-fiber network conceptual illustration figure.
The signaling procedure figure that Fig. 2 sets up for O-LSP.
Embodiment
Further specify the present invention below in conjunction with accompanying drawing.
The notion of hierarchical structure optical-fiber network at first is described in conjunction with Fig. 1.
As shown in Figure 1, this network is formed by three layers.Each layer is made up of the routed domain that quantity does not wait.Each routed domain is associated with network element device (abbreviation network element) some, that embed corresponding software physically by logically being made up of datum plane and control plane.For example: the orlop of hierarchical structure optical-fiber network has comprised four routed domain: L1AS1, L1AS2, L1AS3, L1AS4.Mark 111,112,121,122,131,132,141 and the 142 expressions network element relevant with routed domain.The datum plane of routed domain L1AS1 and control plane are realized by network element 111,112, the datum plane of routed domain L1AS2 and control plane are realized by network element 121,122, the datum plane of L1AS3 and control plane are realized that by network element 131,132 datum plane of L1AS4 and control plane are realized by network element 141,142.Connected by optical fiber between the network element, what transmit in the optical fiber is wavelength-division-multiplexed optical signal.
Routed domain L2AS1, L2AS2 constitute the second layer of network, and routed domain L3AS forms the 3rd layer of network.
Relation between relation between routed domain L3AS and routed domain L2AS1, the L2AS2 and routed domain L2AS1, L2AS2 and routed domain L1AS1, L1AS2, L1AS3 and the L1AS4 satisfies comprise strategy: routed domain L1AS1, the L1AS2 that ITU-TG.8080 advises and is completely contained among the routed domain L2AS1; Routed domain L1AS3, L1AS4 are completely contained among the routed domain L2AS2; Routed domain L2AS1, L2AS2 are completely contained among the routed domain L3AS.
Specify by optical network management system: network element 311 is the physical entity of control plane the 3rd layer mouthpiece; Network element 211,221 is respectively the mouthpiece of control plane in second layer routed domain L2AS1, L2AS2 physical entity; Network element 111,121,131 and 141 is respectively the mouthpiece of control plane in orlop routed domain L1AS1, L1AS2, L1AS3 and L1AS4 physical entity.
The present invention comprises and connects the signaling procedure of setting up.As shown in Figure 2.The straight line of reference numbers among Fig. 2, expression signaling repeating process.The process that tens is identical is a parallel procedure.The size of tens has been represented the order of signaling procedure.
With Fig. 1, Fig. 2 is example, and embodiments of the invention are described.The user to the optical-fiber network request set up one from network element 111 to network element O-LSP of 142 connects, the user has specified the mark that of going into mark and network element 142 of network element 111.This process is shown in the process among Fig. 2 11.
1, routed domain mouthpiece 311 receives user's connection request, transferring to the 3rd layer of routed domain L3AS Ingress node 311 calculates this connection request and 311 goes into mark-312 and go out mark being connected to of this layer, and judge 311 and go into connection needs that mark-312 goes out mark and cross over 211 of the routed domain L2AS1 of the second layer and L2AS2 and L2AS1 routed domain and go into mark, 212 and go out mark according to G.8080 comprising strategy, 221 of L2AS2 routed domain is gone into mark, 222 and is gone out mark.Mouthpiece 311 is sent to the L2AS1 of the second layer and the mouthpiece 211 and 221 of L2AS2 to these message from the 3rd layer L3AS respectively.This process is shown in the process among Fig. 2 21,22.
2, network element 211 and 221 receive the 3rd layer pass down be connected the gateway mark after, transfer to the entrance network element of place routed domain separately:
Routed domain L2AS1 entrance network element 211 calculates 211 goes into mark-212 and goes out the mark connection request and need cross over undermost routed domain L1AS1 and L1AS2, and 111 the going into mark, 112 and go out mark of L1AS1; 121 of L1AS2 goes into mark, and 122 go out mark.
Simultaneously, routed domain L2AS2 entrance network element 221 calculates 221 goes into the connection request that mark-222 goes out mark and need cross over undermost routed domain L1AS3 and L1AS4, and 131 the going into mark, 132 and go out mark of L1AS3; 131 of L1AS4 goes into mark, and 132 go out mark.
3, after network element 111,121,131 and 131 receives connection gateway mark from the second layer, transfer to the entrance network element of routed domain separately:
Routed domain L1AS1 entrance network element 111 is gone into mark-112 according to 111, and to go out route that the mark connection request calculates this territory be 111 to go into mark-111 and go out mark-112 and go into mark-112 and go out mark; Transfer to signaling and set up this route.This process is shown in the process among Fig. 2 41,51.
Routed domain L1AS2 entrance network element 121 is gone into mark-122 according to 121, and to go out route that the mark connection request calculates this territory be 121 to go into mark-121 and go out mark-122 and go into mark-122 and go out mark; Transfer to signaling and set up this route.This process is shown in the process among Fig. 2 42,52.
Routed domain L1AS3 entrance network element 131 is gone into mark-132 according to 131, and to go out route that the mark connection request calculates this territory be 131 to go into mark-131 and go out mark-132 and go into mark-132 and go out mark; Transfer to signaling and set up this route.This process is shown in the process among Fig. 2 43,53.
Routed domain L1AS4 entrance network element 141 is gone into mark-142 according to 141, and to go out route that the mark connection request calculates this territory be 141 to go into mark-141 and go out mark-142 and go into mark-142 and go out mark; Transfer to signaling and set up this route.This process is shown in the process among Fig. 2 44,54.
4,111 go into mark-112 go out mark connect sets up successfully after, mouthpiece 111 is to mouthpiece's 211 transmission successful connection acknowledge messages; 121 go into mark-122 go out mark connect sets up successfully after, mouthpiece 121 is to mouthpiece's 211 transmission successful connection acknowledge messages; 131 go into after mark-132 goes out the mark successful connection, and mouthpiece 131 mouthpieces 221 send the successful connection acknowledge messages; 141 go into after mark-142 goes out the mark successful connection, and mouthpiece 141 sends the successful connection acknowledge messages to mouthpiece 221.This process is respectively shown in the process among Fig. 2 61,62,63,64.
5, mouthpiece 211 receives from after mouthpiece's 111,121 successful connection acknowledge messages, sends the successful connection acknowledge message to mouthpiece 311; 221 receive from after mouthpiece's 131,141 successful connection acknowledge messages, send the successful connection acknowledge message to 311.This process is respectively shown in the process among Fig. 2 71,72.
6,311 receive, send the successful connection acknowledge message, transmit the data synchronization signal as the user to the user from after 211, the 221 successful connection acknowledge messages.This process is shown in the process among Fig. 2 81.
The present invention has comprised the processing of network element to signaling message.For finishing the foundation of O-LSP, network element need be handled connection request message, and resource occupation message connects and sets up message, the successful connection acknowledge message, and connection failure message, resource release messages etc. are several.The network element that is in different layers is slightly different to the processing of these message, and the entrance network element of orlop routed domain, general network element (on route, the intermediate NE except that entrance network element and outlet network element), outlet network element also have difference to the processing of these message.
For connection request message, the relevant routed domain entrance network element in intermediate layer checks that at first this routed domain has or not enough resources, if having, and reserved resource then; Send new connection to lower floor then and set up message.If this routed domain does not have enough resources, then refuse this connection, send connection failure message by the mouthpiece to its upper strata.
Orlop routed domain entrance network element is received the connection request message that this territory mouthpiece sends, check that at first this routed domain has or not enough resources,, then calculate the route of this connection if having, reserve local resource, send to connect along the route of calculating then and set up message.If No Assets then sends connection failure message by this territory mouthpiece to the relevant routed domain mouthpiece in upper strata.
After general network element receives that message is set up in the connection of upstream network element transmission in the orlop routed domain, check local enough resources that has or not equally; If resource is arranged, reserved resource then, downstream network element sends to connect and sets up message simultaneously; If No Assets, then upstream network element sends connection failure message.
After orlop routed domain outlet network element receives that message is set up in connection, also be to check local resource earlier; If resource is arranged, reserved resource then, upstream network element sends resource occupation message simultaneously, carries out the local resource allocation action then.If be allocated successfully, then send the successful connection acknowledge message to its upstream network element; If distribute failure, then send connection failure message, and release this locality connects reserved resource for this reason to its upstream network element.
After the general network element of orlop is received resource occupation message, transmit this message to its upstream network element earlier, carry out the local resource allocation action then.As be allocated successfully, then network element is provided with its connection foundation and is masked as " success "; As distribute failure, then network element is provided with its connection foundation and is masked as " failure ", and release this locality connects reserved resource for this reason.After the general network element of orlop is received the successful connection acknowledge message, at first check local connection foundation sign,, then transmit the successful connection acknowledge message to its upstream network element if be " success "; If be " failure ", then transmit connection failure message to its upstream network element.The general network element of orlop is received connection failure message, and directly upstream network element is transmitted connection failure message, and release this locality connects reserved resource for this reason.
After orlop routed domain entrance network element is received the successful connection acknowledge message, send the successful connection acknowledge message to its upper strata mouthpiece; After receiving connection failure message, send connection failure message, send resource release message to related network elements simultaneously to its upper strata mouthpiece.
After the intermediate layer mouthpiece receives the successful connection acknowledge message, transmit the successful connection acknowledge message, send resource occupation message to this routed domain related network elements simultaneously to its upper strata.After the mouthpiece of the superiors receives the successful connection acknowledge message, send the successful connection acknowledge message, send resource occupation message to this routed domain related network elements simultaneously to the user.After each network element of the intermediate layer and the superiors is received resource occupation message, take and be that this connects reserved resource.
After the intermediate layer mouthpiece received connection failure message, the network element with this join dependency in its routed domain of representing sent resource release message, sent connection failure message to its last layer mouthpiece network element simultaneously; The mouthpiece of the superiors receives connection failure message, on the one hand notifies the user this connection failure, on the other hand to those also do not obtain connection failure message, send resource release message with the routed domain of this join dependency.
After the intermediate layer mouthpiece receives resource release message, transmit new resource release message to the mouthpiece of its lower floor, the entrance network element of this connection in this territory is simultaneously sent resource release message.General network element is received resource release message, and downstream network element is transmitted this message, discharges local this connection resource of reserving or taking that is simultaneously.
In the present invention, the foundation of a complete O-LSP is that the foundation of each O-LSP section in the orlop routed domain of crossing over by this O-LSP is finished, and the foundation of each O-LSP section is almost carried out simultaneously, therefore the time of whole connection is compared and will significantly reduce with the RSVP-TE agreement of present employing, only is subject to the settling time of the longest O-LSP section.
Suppose that an O-LSP who connects 111-132 shown in Figure 1 needs through n network element in orlop, suppose that simultaneously the signaling between the network element passes for only needing 1 jumping just can arrive in each routed domain, the propagation delay time of signaling is t, if be T cross matrix operate time on each network element data plane, then be T the settling time of this O-LSP
1=2 (4n-1) t+4nT (traditional RSVP-TE agreement)
T
2=t '+2 (n-1) t+T+6t (method of the present invention)
Wherein t ' is the call duration time of control plane between different layers, perhaps is the call duration time between routed domain mouthpiece and the routed domain entrance network element, and its size and t are suitable.Can see that for fixing t and T, the present invention will save bigger situation of a large amount of connection setup times, particularly n.For example: t=2ms, T=20ms and n=5, the connect hours of the present invention can save 70%.
Claims (1)
1. the method for building up of the parallel level signal interchange channel in the lamina optical network is characterized in that this method may further comprise the steps:
1) after the control plane of lamina optical network is received the connection request that the user sends, the optical-fiber network gateway network element mark of described connection request correspondence is transmitted to the mouthpiece of the superiors' routed domain;
The mouthpiece of the superiors' routed domain is transmitted to optical-fiber network gateway network element mark the entrance network element of this mouthpiece place routed domain, calculate the route of this connection request in this layer routed domain by described entrance network element, and described route resource reserved, comprise strategy based on what G.8080 International Telecommunications Union's tissue advised then, judge the gateway network element mark of following one deck routed domain that this route will cover, and be transmitted to the mouthpiece of following one deck routed domain that will cover by the mouthpiece of this layer routed domain concurrently;
If the entrance network element of described routed domain is found this layer routed domain because of inadequate resource, do not satisfy the required route of this connection request, then send the message of connection failure to the user through this layer mouthpiece;
2) after the mouthpiece of the relevant routed domain of each layer receives the gateway network element mark of last layer routed domain in the middle of, it is transmitted to the entrance network element of each mouthpiece place routed domain, calculate the route of this connection request in each relevant routed domain of this layer by each entrance network element, and described route resource reserved, comprise strategy based on what G.8080 International Telecommunications Union's tissue advised then, judge the gateway network element mark of following one deck routed domain that this route will cover, and be transmitted to the mouthpiece of following one deck routed domain that will cover by the mouthpiece of each relevant routed domain of this layer concurrently;
If the entrance network element of a certain routed domain in intermediate layer is found this routed domain because of inadequate resource, can't satisfy the required route of this connection request, then send connection failure message to the relevant routed domain mouthpiece of last layer through this routed domain mouthpiece; After last layer routed domain mouthpiece received down one deck routed domain mouthpiece connection failure message, discharging relevant routed domain was this connection request institute reserved resource, sent connection failure message for simultaneously the relevant routed domain mouthpiece of its last layer;
3) the relevant routed domain mouthpiece of orlop is transmitted to the gateway network element mark that receives the entrance network element of each mouthpiece place routed domain, calculate the route of this connection request in each relevant routed domain of this layer, and send to connect along this route and set up message, related network elements is the parallel local resource that distributes of route for this reason;
If the signal interchange channel is set up successfully in the orlop routed domain, then this routed domain mouthpiece sends the successful connection acknowledge message to last layer routed domain mouthpiece; The mouthpiece of the relevant routed domain of middle each layer successively upwards transmits the successful connection acknowledge message, sends resource occupation message to this routed domain simultaneously, until the superiors;
If failure is set up in the signal interchange channel in the orlop routed domain, then this routed domain mouthpiece sends connection failure message to last layer routed domain mouthpiece; The mouthpiece of the relevant routed domain of middle each layer successively upwards transmits connection failure message, sends resource release message to this territory simultaneously, until the superiors;
4) mouthpiece of the superiors' routed domain receives the successful connection acknowledge message that all routed domain mouthpieces of this join dependency send, and represents this successful connection, and sends the successful connection acknowledge message by the mouthpiece of the superiors' routed domain to the user;
The mouthpiece of the superiors' routed domain receives the connection failure message that the routed domain of this join dependency sends, and represents this connection failure; This mouthpiece sends connection failure message to the user, simultaneously to lower floor also do not obtain connection failure message, send resource release message for routed domain of this connection occupied resource; After relevant routed domain is received resource release message, discharge the shared Internet resources of promising this connection of institute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100781394A CN1305280C (en) | 2004-09-17 | 2004-09-17 | Establishing method for parallel layer light mark exchanging path in layer light network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100781394A CN1305280C (en) | 2004-09-17 | 2004-09-17 | Establishing method for parallel layer light mark exchanging path in layer light network |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1588920A CN1588920A (en) | 2005-03-02 |
| CN1305280C true CN1305280C (en) | 2007-03-14 |
Family
ID=34604962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100781394A Expired - Fee Related CN1305280C (en) | 2004-09-17 | 2004-09-17 | Establishing method for parallel layer light mark exchanging path in layer light network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1305280C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007012223A1 (en) * | 2005-07-28 | 2007-02-01 | Zte Corporation | A method for automatically switched optical network hierarchy routing calculating and connection establishing |
| CN101341694B (en) * | 2006-11-28 | 2011-09-14 | 中兴通讯股份有限公司 | Combined routing inquiry method of ASON |
| CN101197756B (en) * | 2006-12-04 | 2010-05-19 | 中兴通讯股份有限公司 | Hierarchical routing query method of automatic exchange optical network |
| JP5123955B2 (en) * | 2007-02-15 | 2013-01-23 | タイコ エレクトロニクス サブシー コミュニケーションズ エルエルシー | Distributed network management system and method |
| CN101471853B (en) * | 2007-12-29 | 2012-02-29 | 华为技术有限公司 | Route calculation method, unit and system |
| CN105282025A (en) * | 2014-07-11 | 2016-01-27 | 中兴通讯股份有限公司 | Method of determining end-to-end routing and apparatus thereof |
| CN104869021B (en) * | 2015-05-22 | 2018-02-09 | 清华大学 | More multiple field heterogeneous optical network resource collocation methods of granularity |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1384618A (en) * | 2002-06-07 | 2002-12-11 | 清华大学 | Optical path establishing method for automatically exchanging optical network |
| JP2003258886A (en) * | 2002-02-28 | 2003-09-12 | Nippon Telegr & Teleph Corp <Ntt> | Method for establishing optical path |
-
2004
- 2004-09-17 CN CNB2004100781394A patent/CN1305280C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003258886A (en) * | 2002-02-28 | 2003-09-12 | Nippon Telegr & Teleph Corp <Ntt> | Method for establishing optical path |
| CN1384618A (en) * | 2002-06-07 | 2002-12-11 | 清华大学 | Optical path establishing method for automatically exchanging optical network |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1588920A (en) | 2005-03-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0873629B1 (en) | Method and arrangement for network resource administration | |
| JP4331187B2 (en) | Dynamic bandwidth allocation apparatus and method in Ethernet passive optical communication network, and EPON master apparatus using the same | |
| CN1076941C (en) | Establishing a group call in a mobile radio system | |
| CN1511410A (en) | Apparatus and method for accessing network | |
| CN86108038A (en) | Switching system with a plurality of parallel switching networks | |
| CN101047446A (en) | Device and method for allocating Ethernet service in passive optical network and management entity | |
| CN1305280C (en) | Establishing method for parallel layer light mark exchanging path in layer light network | |
| CN1339890A (en) | System and method for transfering multiple protocol formats in optical wave communication network | |
| CN1471244A (en) | Method for realizing Ethernet passive optical fiber network | |
| CN1917517A (en) | Method and control plane for provisioning connections in a multi-layer transport network | |
| CN101459589B (en) | Method and device for distributing network resource | |
| CN1620771A (en) | Spectrum roate determining method for given connection in optical communication network | |
| CN1535516A (en) | Telecommunications network with automatic detection of topology and method for this detection | |
| CN1798051A (en) | Method of network fault recovery crossing over connections in multiple domains | |
| CN1601934A (en) | Distributing topopology polymerization method of wave wavelength route optical network | |
| CN1717113A (en) | Photoelectric mixed exchanging struture supporting light burst/group exchanging | |
| CN1352842A (en) | Optical communications network | |
| JP2004503178A (en) | Communications system | |
| CN100548067C (en) | A kind of control method that in the multiple size light switching network, realizes optical channel foundation | |
| CN101069434A (en) | Data processing system and method for converting and synchronising data traffic | |
| CN1325202A (en) | Method and system for dynamically controlling distivbution and direction of wavelength on network link | |
| CN1625150A (en) | Method for supporting real-time service in optical burst exchange | |
| CN1291030A (en) | Business distribution in virtual relay line | |
| CN1231073C (en) | Method for transmitting information signals in transmission network independent of user channel | |
| CN111601188B (en) | Resource allocation method in space division multiplexing elastic optical network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |