CN1323521C - Virtual linkage combination time gap regulating method - Google Patents
Virtual linkage combination time gap regulating method Download PDFInfo
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- CN1323521C CN1323521C CNB031316352A CN03131635A CN1323521C CN 1323521 C CN1323521 C CN 1323521C CN B031316352 A CNB031316352 A CN B031316352A CN 03131635 A CN03131635 A CN 03131635A CN 1323521 C CN1323521 C CN 1323521C
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Abstract
The present invention relates to a method for regulating time gaps in a virtual concatenation (VC) group. The method comprises the following steps: respectively adding a crossing matrix (of which the crossing capacity is configured according to an actual demand) to the up stream of an SDH mapping path and the down stream of a de-mapping path for regulating the time gaps in virtual concatenation; using a virtual branch path to replace each VC12 capable of processing in the virtual concatenation; configuring the sequence number of a VC4 bus and the VC12 corresponding to each virtual branch path in the virtual concatenation group according to the sequence of the time gaps required by the virtual concatenation; executing initializing configuration for the crossing matrix; configuring and regulating the time gaps in the virtual concatenation group. The method of the present invention can reduce the time division pressure of cross boards and can also reduce risks caused by modifying a time gap algorithm.
Description
Technical field
The present invention relates to the processing method of the virtual cascade group time slot of SDH (Synchronous Digital Hierarchy) (SDH:Synchronous Digital Hierarchy) optical transmission device.
Background technology
In recent years, obtained extensive use based on multi-service transport platform (MSTP:Multi-Service TransportPlatform) technology of SDH in metropolitan area network, the core concept of this technology of technology is exactly to adopt the mode of VC Virtual Concatenation to transmit the business of data.VC refers to virtual container, is a technical term among the SDH, and VC4 and VC12 represent varigrained virtual container, and VC4 is the virtual container of a 140M, and VC12 is the virtual container of a 2M.Because different data services is different to bandwidth requirement, and concerning SDH, its each virtual container loaded service bandwidth is conditional.For example VC12 is exactly the virtual container of a 2M, the virtual container of a 140M of VC4 timing.But the bandwidth requirement of actual data traffic may be greater than the capacity of a virtual container, and the container bearing data service of this synthetic bigger bandwidth that just virtual container need be cascaded up has two kinds of cascade systems, i.e. Adjacent Concatenation and Virtual Concatenation on principle.Because Virtual Concatenation can carry out multi-path transmission, therefore in the load bearing process of data service, what generally adopt is Virtual Concatenation.By the configuration of Virtual Concatenation, can satisfy the requirement of various data services flexibly to the virtual container quantity of cascade.
For the ease of recovery, the arrangement of the time slot of Virtual Concatenation is arranged often in order.In processing mode in the past, this time slot is adjusted on the cross board to be finished, and so not only can increase the time division pressure of cross board, may cause professional interruption when reconfiguring time slot, and reduce configuration flexibility.
Summary of the invention
The present invention proposes a kind of method of time slot adjustment of virtual cascade group, solve the time slot arrangement mode that Virtual Concatenation requires.According to the requirement of Virtual Concatenation, finish the adjustment of time-slot sequence, simplify the time slot configuration of webmaster to the data business.Make data service can in original system, directly support data service according to the time slot configuration of electric tributary card.
The notion that in Virtual Concatenation, does not have branch road, but for convenience of description, in the present invention, each VC12 that can handle is used as virtual tributary with Virtual Concatenation.
Technical scheme of the present invention is:
1, the method that time slot is adjusted in a kind of virtual cascade group comprises:
1) at the descending cross matrix (cross-capacity disposes according to actual needs) that adds respectively of the up reconciliation mapping path of SDH mapping path, is used to do the adjustment of Virtual Concatenation time slot;
2) virtual tributary is replaced each VC12 that can handle of Virtual Concatenation, the time-slot sequence that requires according to Virtual Concatenation disposes the VC4 bus of each virtual tributary correspondence in the virtual cascade group and the serial number of VC12;
3) described cross matrix is carried out initial configuration;
4) virtual cascade group is carried out time slot configuration and time slot adjustment.
When time slot configuration changes, repeat above-mentioned steps 4).
In such scheme, the method for described cross matrix being carried out initial configuration is: remove the configuration of up-downgoing cross matrix, the time slot in the virtual cascade group empties, and the time slot configuration information of virtual tributary also empties.
In such scheme, the method of virtual cascade group being carried out time slot configuration and time slot adjustment is: when time slot configuration issues, number write down the following VC4 bus and the VC12 serial number of each branch road correspondence and VC4 bus and the VC12 serial number that writes down each branch road correspondence by virtual tributary, the VC12 of the following VC4 bus of respective virtual branch road record is crossed to the VC12 of the VC4 bus of respective virtual branch road correspondence; , equally the VC12 of the VC4 bus of the correspondence of respective virtual branch road is crossed to the VC12 of VC4 bus; The time slot of each virtual tributary of circular treatment is handled.
Adopt method of the present invention, need (the data service plate can be used as common tributary card disposes to the modification of time slot algorithm when having solved data service on the SDH equipment, wherein the quantity of branch road equals the quantity of the VC12 that virtual cascade group can handle), reduced the time division pressure of cross board, also reduced because time slot algorithm is revised the risk of being brought.The software development time of also having accelerated data service simultaneously, in the time of the increased of the VC12 that can handle when the Virtual Concatenation processing module, only need increase/minimizing virtual tributary number, increase/reduce the capacity of cross matrix and revise the VC4 bus of each branch road correspondence in the virtual cascade group and the serial number of VC12 gets final product, other processing modes are similar.
Description of drawings
Fig. 1 is the hardware annexation figure that time slot is adjusted;
Fig. 2 is the initial configuration figure that time slot is adjusted;
Fig. 3 is a time slot command configuration flow chart;
Fig. 4 is the hardware annexation figure of one embodiment of the present of invention.
Embodiment
Fig. 1 is the hardware annexation figure that time slot of the present invention is adjusted.Be mapped to the cross matrix of a N * N in the up increase of SDH direction in data service, separate the cross matrix of a N * N of the mapping descending increase of direction in the SDH direction.
Fig. 2 becomes time slot of the present invention to adjust flow process with Fig. 3 mutual group.Wherein, Fig. 2 describes the initial configuration flow process that time slot is adjusted; Fig. 3 describes the time slot configuration flow process.This is elaborated in the technical scheme part, no longer repeats herein.
Fig. 4 is the hardware annexation figure of one embodiment of the present of invention.Below in conjunction with Fig. 4 time slot adjustment of the present invention is specifically described.
Suppose that the Virtual Concatenation processing module can handle 126 VC12, its corresponding 2 VC4 buses, every VC4 bus has 63 VC12.2 VC4 buses are according to interleaving arrangement during recovering virtual cascades.We are according to following processing: data service can be shone upon into 126 virtual tributary mouths, wherein (i%2, i/2) time slot (annotate: first parameter is represented the VC4 Bus number, represents VC12 number for second) in i corresponding Virtual Concatenation resume module of virtual tributary mouth.
When initialized the time, the time slot of 126 corresponding all VC12 of virtual tributary all empties by the uplink and downlink timeslot cross matrix.
When the time slot configuration order issues, by i virtual tributary time slot corresponding mapping table, at first with the following time slot (K of configuration virtual branch road, L) (annotate: K is following VC4 Bus number, L is the VC12 timeslot number) (i%2 i/2), notes time slot simultaneously to be crossed to the time slot that Virtual Concatenation handles; (i%2 i/2) is crossed to time slot (M, N) (annotate: M is last VC4 Bus number, and N is the VC12 timeslot number), time slot on the record simultaneously then to dispose the time slot that Virtual Concatenation handles.Each branch road of poll is finished the adjustment of time-slot sequence.
When the time slot configuration changes, just reconfigure the up-downgoing cross matrix and get final product, the time slot corresponding relation that virtual tributary and Virtual Concatenation are handled does not take place not change.
Claims (2)
1, the method that time slot is adjusted in a kind of virtual cascade group comprises:
1) adds a cross matrix respectively in the up reconciliation mapping path of SDH mapping path descending, be used to do the adjustment of Virtual Concatenation time slot;
2) virtual tributary is replaced each VC12 that can handle of Virtual Concatenation, the time-slot sequence that requires according to Virtual Concatenation disposes the VC4 bus of each virtual tributary correspondence in the virtual cascade group and the serial number of VC12;
3) described cross matrix is carried out initial configuration;
4) virtual cascade group is carried out time slot configuration and time slot adjustment, concrete grammar is:
When time slot configuration issues, number write down the following VC4 bus and the VC12 serial number of each branch road correspondence and VC4 bus and the VC12 serial number that writes down each branch road correspondence by virtual tributary, the VC12 of the following VC4 bus of respective virtual branch road record is crossed to the VC12 of the VC4 bus of respective virtual branch road correspondence; , equally the VC12 of the VC4 bus of the correspondence of respective virtual branch road is crossed to the VC12 of VC4 bus; The time slot of each virtual tributary of circular treatment is handled.
2, the method that time slot is adjusted in the described virtual cascade group of claim 1, it is characterized in that, the method of described cross matrix being carried out initial configuration is: remove the configuration of up-downgoing cross matrix, the time slot in the virtual cascade group empties, and the time slot configuration information of virtual tributary also empties.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031316352A CN1323521C (en) | 2003-05-29 | 2003-05-29 | Virtual linkage combination time gap regulating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031316352A CN1323521C (en) | 2003-05-29 | 2003-05-29 | Virtual linkage combination time gap regulating method |
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| Publication Number | Publication Date |
|---|---|
| CN1553633A CN1553633A (en) | 2004-12-08 |
| CN1323521C true CN1323521C (en) | 2007-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB031316352A Expired - Lifetime CN1323521C (en) | 2003-05-29 | 2003-05-29 | Virtual linkage combination time gap regulating method |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100440770C (en) * | 2005-07-22 | 2008-12-03 | 中兴通讯股份有限公司 | Method for backward transmitting virtual cascade group far end flaw indication |
| CN1905426B (en) * | 2005-07-28 | 2010-07-14 | 中兴通讯股份有限公司 | Method of light plate lower branch time slot time division optimizing configuration of SDH system |
| CN1905425B (en) * | 2005-07-28 | 2011-11-30 | 中兴通讯股份有限公司 | Method of light plate-to-light plate time slot time division optimizing configaration of SDH system |
| CN101179351B (en) * | 2006-11-07 | 2012-05-09 | 中兴通讯股份有限公司 | Dynamic allocation method for space/time division cross time slot resource of synchronous digital hierarchy equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1028101A (en) * | 1996-07-10 | 1998-01-27 | Fujitsu Ltd | Time division signal exchange system |
| WO2001047158A1 (en) * | 1999-12-20 | 2001-06-28 | Kabushiki Kaisha Toshiba | Transmitter and tributary interface board |
| CN1400790A (en) * | 2001-07-28 | 2003-03-05 | 深圳市中兴通讯股份有限公司上海第二研究所 | Rolay interface device based on synchronous digital transmission system |
-
2003
- 2003-05-29 CN CNB031316352A patent/CN1323521C/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1028101A (en) * | 1996-07-10 | 1998-01-27 | Fujitsu Ltd | Time division signal exchange system |
| WO2001047158A1 (en) * | 1999-12-20 | 2001-06-28 | Kabushiki Kaisha Toshiba | Transmitter and tributary interface board |
| CN1400790A (en) * | 2001-07-28 | 2003-03-05 | 深圳市中兴通讯股份有限公司上海第二研究所 | Rolay interface device based on synchronous digital transmission system |
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| CN1553633A (en) | 2004-12-08 |
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