CN1710903A - Method and apparatus of supporting multi loading to realize signal transformission - Google Patents
Method and apparatus of supporting multi loading to realize signal transformission Download PDFInfo
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- CN1710903A CN1710903A CN200410049472.2A CN200410049472A CN1710903A CN 1710903 A CN1710903 A CN 1710903A CN 200410049472 A CN200410049472 A CN 200410049472A CN 1710903 A CN1710903 A CN 1710903A
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Abstract
The method includes steps: setting up corresponding logic port for each load respectively; configuring permanent virtual channel for each logic port; when needed to carry out transmission of cell, based on information carried by cell, id of virtual channel and id of virtual channel, determining relevant permanent virtual channel; based on the said permanent virtual channel, carrying out corresponding transmission process for cell. The equipment in the invention includes following parts: module for setting up logic port, module for configuring permanent virtual channel, module for determining logic port, and module for treating cell transmission. Logic port is introduced in the invention to make configuration of a permanent virtual channel dependent from cell carrier relatively as well as to make indexing method for linking virtual channel dependent from cell carrier relatively. Features are: lowering cost of network device, raising maintainability, and simplifying cell transmission.
Description
Technical field
The present invention relates to the network communications technology field, be specifically related to a kind of method and apparatus of supporting the transmission of many carrying realization cells.
Background technology
Technology such as that ATM (asynchronous transfer mode) comprises is multiplexing, exchange and transmission.In this transmission mode, need information transmitted to be assembled into cell.Do not need periodic appearance owing to comprise the cell of a segment information, therefore this transmission mode is a kind of asynchronous transmission mode.
Classes of packets in ATM cell and the packet switching seemingly but has oneself characteristics.ATM cell is a fixed length, has only 53 bytes, and length is less.Whole cell is divided into letter head and payload two parts, and the letter head is 5 bytes, and payload is 48 bytes.Atm cell header comprises VPI (VCI), VCI (VPI), HEC (header error control), PT (payload type), CLP (Cell Loss Priority), GFC (general flow control).
VPI length in NNI (Network-Node Interface) transmission technology is 12 bits, and length is 8 bits in UNI (User Network Interface) transmission technology.Virtual channel among the VCI sign VPI, length is 16 bits.VPI/VCI identifies a VCC (Virtual Channel connection) together.HEC can detect vicious letter head, and corrects the mistake of 1 bit in the letter head, and length is 8 bits.Another effect of HEC is to carry out cell delineation, utilizes the correlation of HEC field and 4 bytes before it can identify letter head position.Because the value difference of VPI/VCI in different links is so all will recomputate HEC at each section link.The length of PT is 3 bits.CLP identifies Cell Loss Priority, is used for congested control, and length is 1 bit.GFC only is used for uni interface, is changed to 0000 at present, may be used in the future flow control or in the different access of network sign of shared medium, length is 4 bits.
From the above description as can be seen, VPI/VCI identifies VCC together, and VCC is that a kind of logic of setting up between the information source and the stay of two nights connects, and VCC does not monopolize the resource of transmission line and switch, on a physical circuit many VCC can be arranged.
VCC generally can be divided into two kinds, and a kind of is PVC (Permanent Virtual Channel), and another kind is SVC (Switched Virtual Path).PVC sets up in advance by webmaster, and though this path whether have professional by or do not have network-termination device to insert, PVC exists always, up to being discharged by webmaster.SVC is when user terminal need be communicated by letter, and the virtual path by network-termination device is set up by signaling after user terminal communication is finished, is discharged by signaling.
For PVC, ATM switch need be configured in advance, and generally need calculate corresponding VCC index according to bearing identification.1 PVC of this VCC index unique identification.As cell or when having the upper-layer service data to transmit, the bearing identification that ATM switch provides according to cell or primitive is by calculating the VCC index, and by the corresponding PVC list item of this index search, decision is to the processing method of cell.The configuration list item of PVC generally is configured on the transport network node.
General ATM cell transmits on optical fiber, can adopt the SDH technology, because light slogan, VPI and VCI can 1 PVC of unique appointment, so when adopting the SDH technology to carry out the cell transmission, generally carry out the PVC configuration, carry out the VCC index according to light slogan, VPI, VCI according to the light slogan.When therefore adopting the SDH technology to carry out the ATM cell transmission, its bearing identification is the light slogan.
Except on optical fiber, transmitting ATM cell, demand and application that ATM cell is transmitted on than the low speed physical link are also arranged at present, all can realize this demand as the bearing technology of cell transmission as adopting IMA (Inverse Multiplexing over ATM) technology, UNI (User Network Interface) link technology, Fractional ATM (segmentation asynchronous transfer mode) technology etc.
When adopting IMA technical transmission cell, need the cell flow of higher speed be distributed on a plurality of physical links than low speed at transmitting terminal and transmit, again they be merged to single cell flow and be delivered to the ATM layer at receiving terminal, to realize the transmission of cell.In the IMA technology, can dispose many IMA links in an IMA group,, realize the multiplexing of cell flow by many IMA links.Article one, PVC generally is configured on 1 IMA group.Adopt the IMA technology in that to carry out the configuration of PVC on the transport network node different with configurating PVC on optical interface, optical interface generally has fixing light slogan, though low speed physical link such as E1 and T1 etc. also have physical port number, but this physical port number uses for the IMA link configuration, organize for IMA, fixing, not single physical port number uses for it, therefore at this moment can not carry out the configuration of PVC as optical interface with physical port number.Because IMA group number and VPI and VCI can 1 PVC of unique appointment,, carry out the VCC index according to IMA group number, VPI, VCI so when adopting the IMA technology to carry out the cell transmission, generally carry out the PVC configuration according to the IMA group number.When therefore adopting the IMA technology to carry out the ATM cell transmission, its bearing identification is the IMA group number.
When adopting UNI link technology transmit cell, need directly ATM cell at certain 1 low speed chain circuit, as directly transmitting on 1 E1 link, to realize the transmission of cell.On 1 physical link, can only dispose 1 UNI link.Because physical link number and VPI and VCI can 1 PVC of unique appointment,, carry out the VCC index according to physical link number, VPI, VCI so when adopting the UNI link technology to carry out the cell transmission, generally number carry out the PVC configuration according to physical link.Therefore when adopting the UNI link technology to carry out the ATM cell transmission, its bearing identification is a physical link number.
When adopting Fractional atm technology transmit cell, need certain the several time slot on certain bar E1/T1 link to carry out the transmission of ATM cell, to realize the transmission of cell.On 1 physical link, can dispose many Framctional atm links.Because physical link number, time slot and VPI and VCI can 1 PVC of unique appointment, so when carrying out the cell transmission for employing Fractional atm technology, generally carry out the PVC configuration, carry out the VCC index according to physical link number, time slot, VPI, VCI according to physical link number, time slot.Therefore when adopting the Fractional atm technology to carry out the ATM cell transmission, its bearing identification is physical link number, time slot.
Carry out the difference of PVC configuration and VCC index for above-mentioned several technology, as shown in table 1:
Table 1
| The bottom carrying | Optical interface (SDH) | The IMA group | The UNI link | Fractional?ATM |
| Configurating PVC and calculating VCC index parameters needed | Light slogan VPI VCI | IMA group number VPI VCI | Physical link VPI VCI | Physical link time slot VPI VCI |
Can obviously find out by above description and table 1, owing to adopt different bearer in the PVC layoutprocedure with in the VCC index process, to need the parameter that provides different.
On software is realized, need provide different configurating PVCs and the method for calculating the VCC index to different bearing technologies.If provide different software, make that software application is dumb, the range of application limitation is big to different bearing technologies.If provide same software to different bearing technologies, will certainly make the PVC configuration in the software and calculate the VCC index part complicated, and when the new bearing technology of introducing, may cause software that by a relatively large margin modification is arranged, make a mistake easily, be unfavorable for the understanding and the maintenance of software.
On hardware is realized, the PVC configuration information generally need be configured among the FPGA (hardware logic), because the resource-constrained of hardware logic, when receiving cell, hardware logic generally can't provide multiple calculating VCC indexing means according to different technologies, therefore can cause for the different bearer Technology Need different hardware logics is provided, be unfavorable for hardware maintenance.And because the difference of VCC index calculation method, may cause the size of the PVC allocation list structure in the hardware logic to fix, and guaranteeing under the not excessive prerequisite of index that hardware logic is more much more difficult than the implementation procedure of calculating the VCC index from light mouth, VPI, VCI from the implementation procedure that physical link number, time slot, VPI and VCI calculate the VCC index.Owing to support that the physical medium of IMA technology, UNI link technology and Fractional atm technology transmit cell can be identical, as all being E1/T1, therefore often need to support simultaneously these 3 kinds of carryings on same communication network node, at this moment the design complexities of hardware logic can increase considerably.
In sum, the collocation method of this Permanent Virtual Channel of prior art, Virtual Channel connect the indexing means complexity, and be dumb, is unfavorable for understanding and safeguarding, network equipment cost is increased, and the communication system maintainability is poor, the cell transmission realizes difficulty.
Summary of the invention
The objective of the invention is to, providing a kind of supports many carryings to realize the method for cell transmission, the index that the configuration that utilizes logic port to carry out Permanent Virtual Channel is connected with Virtual Channel is to realize reducing network equipment cost, improve the communication system maintainability, to simplify the purpose that cell transmits implementation procedure.
A kind of method of supporting many carryings to realize the cell transmission provided by the invention comprises in order to achieve the above object:
A, the corresponding respectively logic port of each carrying of setting;
The Permanent Virtual Channel of b, described each logic port of configuration;
C, when needs transmit cell, determine corresponding Permanent Virtual Channel according to the beared information in the described cell, VCI and VPI;
D, described cell is carried out corresponding transmission process according to described Permanent Virtual Channel.
Described step a comprises:
Set up the bearing identification of each carrying and the corresponding relation of logical port number.
Described bearing identification comprises: the physical link of the physical link of the light slogan of optical interface, the group number of asynchronous transfer mode inverse multiplexing, User Network Interface number, segmentation asynchronous transfer mode number.
The corresponding relation of described bearing identification and logical port number is: 1 pair 1 corresponding relation.
Described step b comprises:
Dispose the Permanent Virtual Channel of each logic port according to logical port number, VCI, VPI.
Described step c comprises:
C1, when needs transmit cell, determine corresponding logical port number according to the bearing identification of described cell carrying;
C2, determine corresponding Permanent Virtual Channel according to VCI, the VPI of the carrying of described logical port number and described cell.
Described method also comprises:
Set up Virtual Channel according to logical port number, VCI and VPI and be connected index.
Described steps d comprises:
Carry out Virtual Channel according to logical port number, VCI and the VPI of the bearing identification correspondence of described cell carrying and be connected index;
According to described indexed results described cell is transmitted by its corresponding Permanent Virtual Channel.
The present invention also provides a kind of and supports many carryings to realize the device of cell transmission, comprising:
The logic port module is set: the corresponding relation that is provided with and stores each carrying and logic port;
Configuration Permanent Virtual Channel module: the Permanent Virtual Channel that disposes and store described each logic port;
Determine the logic port module: when needs carry out the cell transmission, from the cell loaded information, obtain the carrying of this cell of transmission, and determine the logic port that it is corresponding according to the carrying of storing in the logic port module is set with the corresponding relation of logic port, with described logic port message transmission to cell transmission process module;
Cell transmission process module: VCI, VPI and the next logic port information of described definite port module transmission according to described cell carrying are determined corresponding Permanent Virtual Channel, and according to described Permanent Virtual Channel described cell are carried out transmission process.
Described device also comprises: Virtual Channel connects index module: carry out Virtual Channel according to the VCI of the logic port information of described definite logic port module transmission and cell carrying with VPI and be connected index, and indexed results is transferred to cell transmission process module.
Description by technique scheme can obviously be learnt, the present invention is by introducing logic port, when the configuration Permanent Virtual Channel, no longer need the different parameters of different bearer is carried out different configurations, and the list item of configuration Permanent Virtual Channel fixes, can be because of not increasing new carrying, and adjust the data structure of Permanent Virtual Channel allocation list, thereby make the carrying of the configuration of Permanent Virtual Channel and transmit cell relatively independent, make the configuration of Permanent Virtual Channel be easy to safeguard, be easy to realize; The present invention carries out the index that Virtual Channel connects by logic port, VPI, virtual channel identifier, make different bearer when transmit cell carries out the index of Virtual Channel connection, can use identical parameter and method, unified also simplified the indexing means that Virtual Channel connects, thereby made the carrying of indexing means that Virtual Channel connects and transmit cell relatively independent; On software is realized, because the bearing technology of the method for the configuration of Permanent Virtual Channel, Virtual Channel connection index and cell transmission is relatively independent, make software be easy to safeguard and understand, have wide range of applications; On hardware is realized, the method of index is relatively independent with the bearing technology of cell transmission because the configuration of Permanent Virtual Channel, Virtual Channel connect, the indexing means that data structure is fixed, Virtual Channel connects of the configuration list item of Permanent Virtual Channel is single, make same hardware logic can support different carryings to carry out the transmission of cell simultaneously, has simplified the design of hardware logic; Thereby the present invention has realized reduction communication apparatus cost, improves the communication system maintainability, simplifies the purpose that cell transmits implementation procedure.
Description of drawings
Fig. 1 is the corresponding relation schematic diagram of bearing identification of the present invention and logic port;
Fig. 2 is that the many bearing technologies of support of the present invention are realized the cell transmitting device.
Embodiment
Core concept of the present invention is: the corresponding respectively logic port of each carrying is set, dispose the Permanent Virtual Channel of each logic port, when needs transmit cell, determine corresponding Permanent Virtual Channel according to the beared information in the cell, VCI and VPI, cell is carried out corresponding transmission process according to this Permanent Virtual Channel.
Below based on core concept of the present invention to technical scheme provided by the invention is described in detail.
The present invention is by introducing logic port, parameter when logic port, VPI and VCI are connected index calculation as Permanent Virtual Channel configuration with Virtual Channel so just can make the Permanent Virtual Channel collocation method of different bearer be connected the index Calculation Method with Virtual Channel and unite.
Based on foregoing description, the present invention at first needs to determine the logic port of different bearer correspondence, determine that the logic port of different bearer correspondence can realize that the bearing identification that is different bearer distributes its corresponding logical port number by the bearing identification of different bearer and the corresponding relation of logic port.
If the communication network node is only supported a kind of carrying of cell transmission, so the bearing identification of this carrying and the corresponding relation of logic port can be set on this network node, only support the UNI link technology as network node, then set up the physical link number of UNI link and the corresponding relation of logic port, logical port number can not repeat in this corresponding relation.
If the communication network node is supported the carrying of multiple cell transmission, the corresponding relation of each bearing identification and logic port can be set on this network node so, as, when being E1/T1, network node supports IMA technology, UNI link technology, Fractional atm technology simultaneously, then set up the group number of IMA group and the corresponding relation of logical port number, set up the physical link number of UNI link and the corresponding relation of logical port number, set up the physical link number of Fractional ATM and the corresponding relation of logical port number.All logical port numbers should have nothing in common with each other in these three kinds of corresponding relations, can not repeat, and promptly the corresponding relation of logical port number and bearing identification is 1 pair 1 a corresponding relation.
The corresponding relation of bearing identification and logic port as shown in Figure 1.
When the communication network node need be supported the carrying of new cell transmission, need to determine the bearing identification of this carrying correspondence, be the new logical port number of bearing identification distribution of this carrying, and increase the corresponding relation of this bearing identification and logic port at this communication network node.If the form of the corresponding relation employing table of bearing identification and logic port embodies, when the communication network node need be supported the carrying of new cell transmission, do not need the structure of modification table so, only need in this table, increase corresponding list item and get final product.
Behind the corresponding relation of setting up good above-mentioned bearing identification and logic port on the communication network node, need on logic port, dispose Permanent Virtual Channel.
At different bearing technologies, the logical port number of the bearing identification correspondence of each carrying only need be provided during the configuration Permanent Virtual Channel, logical port number, VPI and the VCI information parameter as the configuration Permanent Virtual Channel is got final product.In the process of configuration Permanent Virtual Channel, owing to unified the configuration parameter of Permanent Virtual Channel,, thereby no longer need to consider the information such as light slogan, physical link number, time slot of each carrying so can use identical collocation method.
If the communication network node is only supported a kind of carrying of cell transmission, so, only need on the logic port of this bearing identification correspondence, dispose Permanent Virtual Channel.
If the communication network node is supported the carrying of multiple cell transmission, so, need on the corresponding respectively logic port of each bearing identification, dispose Permanent Virtual Channel respectively, support IMA technology, UNI link technology, Fractional atm technology when being E1/T1 simultaneously, then need on the logic port of the group number correspondence that IMA organizes, dispose Permanent Virtual Channel as network node; On the logic port of the physical link correspondence of UNI link, dispose Permanent Virtual Channel; On the logic port of Fractional ATM physical link correspondence, dispose Permanent Virtual Channel.
When the communication network node need be supported the carrying of new cell transmission, only need to increase the logic port of the bearing identification correspondence of new bearer, and on this logic port, dispose the configuration that Permanent Virtual Channel can be finished the Permanent Virtual Channel of this carrying easily according to logical port number, VPI and VCI at this network node.
In actual communication system, the collocation method of Permanent Virtual Channel provided by the invention can provide same software to carry out the configuration of Permanent Virtual Channel on software is realized to different carryings, can not increase the complexity of the configuration section of the Permanent Virtual Channel in the software because of the difference of carrying, and when introducing new carrying, can not cause the modification significantly of software yet.On hardware is realized, when being configured to the Permanent Virtual Channel configuration information in the hardware logic, because the structure of the corresponding relation of bearing identification and logic port is fixed the adjustment of having avoided hardware logic to carry out at different bearer, its versatility is strengthened, and range of application is more extensive.
The present invention not only can uniquely determine a Permanent Virtual Channel according to logical port number, VPI and VCI, connects index but also can carry out Virtual Channel.The present invention can set up the method that Virtual Channel is connected index in advance according to logical port number, VPI and VCI, when needs carry out Virtual Channel connection index, connects indexing means at different carryings by unified Virtual Channel and carries out index.
On software is realized, can provide same software to carry out the index that Virtual Channel connects to different bearer, the Virtual Channel that can increase because of the difference of carrying in the software does not connect the complexity of index computational methods part, and when introducing new bearer, can not cause the modification significantly of software.On hardware is realized, because it is identical that the Virtual Channel of different bearer connects the index computational methods, avoided hardware logic to provide different Virtual Channels to connect indexing means to different bearer, its versatility is strengthened, range of application is more extensive, and hardware logic is simple from the implementation procedure that logical port number, VPI and VCI calculating Virtual Channel are connected index, makes the hardware logic simplicity of design.
By the description of technique scheme, after network node receives cell, can learn bearing identification, VPI and the VCI that transmits this cell according to loaded information in the cell, can determine the logic port of this bearing identification correspondence by bearing identification.Can determine a unique Permanent Virtual Channel according to this logic port, VPI and VCI, and carry out by the Permanent Virtual Channel of determining cell being carried out transmission process according to indexed results after Virtual Channel is connected index according to above-mentioned logic port, VPI and VCI.
The present invention can also determine the mask of Permanent Virtual Path according to the VPI that carries in logical port number and the cell, VCI.
The device of the many bearing technologies realizations of support provided by the invention cell transmission as shown in Figure 2.
In Fig. 2, support many bearing technologies to realize that the device of cell transmission comprises: logic port module 200, configuration Permanent Virtual Channel module 210 to be set, to determine that logic port module 220, Virtual Channel connect index module 230, cell transmission process module 240.
The major function that logic port module 200 is set is: be provided with and the bearing identification of each carrying of storage and the corresponding relation of logical port number.
The major function of configuration Permanent Virtual Channel module 210 is: dispose the Permanent Virtual Channel of each logic port according to each logical port number, VPI and VCI, and store.
The major function of determining logic port module 220 is: when needs carry out the cell transmission, from the cell loaded information, obtain the bearing identification of the carrying of this cell of transmission, and determine corresponding logical port number with the corresponding relation of logical port number, and logical port number is transferred to Virtual Channel connection index module 230 and cell transmission process module 240 respectively according to the bearing identification that storage is set in the logic port module 200.
The major function that Virtual Channel connects index module 230 is: carry out Virtual Channel according to the VPI that determines logical port number that 220 transmission of logic port module come and cell carrying with VCI and be connected index, and indexed results is transferred to cell transmission process module 240.Virtual Channel connects the mask that index module 230 can also be determined Permanent Virtual Path according to logical port number, VCI, VPI.
The major function of cell transmission process module 240 is: obtain VPI and VCI from the cell loaded information, and the logical port number that 220 transmission come according to VPI, VCI and definite logic port module determines corresponding Permanent Virtual Channel by the Permanent Virtual Channel of each logic port configuration of configuration Permanent Virtual Channel module 210 storages, and connects the indexed results that index module 230 transmission come according to Virtual Channel and by this Permanent Virtual Channel cell is carried out transmission process.
Though described the present invention by embodiment, those of ordinary skills know, the present invention has many distortion and variation and do not break away from spirit of the present invention, wishes that claims comprise these distortion and variation.
Claims (10)
1, a kind of method of supporting the transmission of many carrying realization cells is characterized in that comprising:
A, the corresponding respectively logic port of each carrying of setting;
The Permanent Virtual Channel of b, described each logic port of configuration;
C, when needs transmit cell, determine corresponding Permanent Virtual Channel according to the beared information in the described cell, VCI and VPI;
D, described cell is carried out corresponding transmission process according to described Permanent Virtual Channel.
2, a kind of method of supporting the transmission of many carrying realization cells as claimed in claim 1 is characterized in that described step a comprises:
Set up the bearing identification of each carrying and the corresponding relation of logical port number.
3, as claimed in claim 2ly a kind ofly support many carryings to realize the methods of cells transmission, it is characterized in that described bearing identification comprises: the physical link of the physical link of the light slogan of optical interface, the group number of asynchronous transfer mode inverse multiplexing, User Network Interface number, segmentation asynchronous transfer mode number.
4, a kind of method of supporting the transmission of many carrying realization cells as claimed in claim 2 is characterized in that the corresponding relation of described bearing identification and logical port number is: 1 pair 1 corresponding relation.
5, a kind of method of supporting the transmission of many carrying realization cells as claimed in claim 2 is characterized in that described step b comprises:
Dispose the Permanent Virtual Channel of each logic port according to logical port number, VCI, VPI.
6, a kind of method of supporting the transmission of many carrying realization cells as claimed in claim 5 is characterized in that described step c comprises:
C1, when needs transmit cell, determine corresponding logical port number according to the bearing identification of described cell carrying;
C2, determine corresponding Permanent Virtual Channel according to VCI, the VPI of the carrying of described logical port number and described cell.
7, a kind of method of supporting the transmission of many carrying realization cells as claimed in claim 5 is characterized in that described method also comprises:
Set up Virtual Channel according to logical port number, VCI and VPI and be connected index.
8, a kind of method of supporting the transmission of many carrying realization cells as claimed in claim 7 is characterized in that described steps d comprises:
Carry out Virtual Channel according to logical port number, VCI and the VPI of the bearing identification correspondence of described cell carrying and be connected index;
According to described indexed results described cell is transmitted by its corresponding Permanent Virtual Channel.
9, a kind of device of supporting the transmission of many carrying realization cells is characterized in that comprising:
The logic port module is set: the corresponding relation that is provided with and stores each carrying and logic port;
Configuration Permanent Virtual Channel module: the Permanent Virtual Channel that disposes and store described each logic port;
Determine the logic port module: when needs carry out the cell transmission, from the cell loaded information, obtain the carrying of this cell of transmission, and determine the logic port that it is corresponding according to the carrying of storing in the logic port module is set with the corresponding relation of logic port, with described logic port message transmission to cell transmission process module;
Cell transmission process module: VCI, VPI and the next logic port information of described definite port module transmission according to described cell carrying are determined corresponding Permanent Virtual Channel, and according to described Permanent Virtual Channel described cell are carried out transmission process.
10, a kind of device of supporting the transmission of many carrying realization cells as claimed in claim 9 is characterized in that described device also comprises:
Virtual Channel connects index module: carry out Virtual Channel according to the VCI of the logic port information of described definite logic port module transmission and cell carrying with VPI and be connected index, and indexed results is transferred to cell transmission process module.
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| CNB2004100494722A CN100505736C (en) | 2004-06-16 | 2004-06-16 | Method and apparatus of supporting multi loading to realize signal transformission |
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| CNB2004100494722A CN100505736C (en) | 2004-06-16 | 2004-06-16 | Method and apparatus of supporting multi loading to realize signal transformission |
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| CN100505736C CN100505736C (en) | 2009-06-24 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102136944A (en) * | 2011-01-18 | 2011-07-27 | 华为技术有限公司 | Permanent virtual connection (PVC) link establishment method, device and system |
| CN101765154B (en) * | 2009-11-06 | 2013-01-09 | 北京中创信测科技股份有限公司 | Restoration inverse multiplexing asynchronous transfer mode (ATM) configuration method and device thereof |
| CN103312626A (en) * | 2012-03-06 | 2013-09-18 | 中兴通讯股份有限公司 | Method and device for transmitting inverse multiplexing service for asynchronous transfer mode |
-
2004
- 2004-06-16 CN CNB2004100494722A patent/CN100505736C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101765154B (en) * | 2009-11-06 | 2013-01-09 | 北京中创信测科技股份有限公司 | Restoration inverse multiplexing asynchronous transfer mode (ATM) configuration method and device thereof |
| CN102136944A (en) * | 2011-01-18 | 2011-07-27 | 华为技术有限公司 | Permanent virtual connection (PVC) link establishment method, device and system |
| CN103312626A (en) * | 2012-03-06 | 2013-09-18 | 中兴通讯股份有限公司 | Method and device for transmitting inverse multiplexing service for asynchronous transfer mode |
| CN103312626B (en) * | 2012-03-06 | 2018-03-30 | 中兴通讯股份有限公司 | A kind of method and device for sending asynchronous transfer mode inverse multiplexing business |
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| CN100505736C (en) | 2009-06-24 |
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Effective date of registration: 20171225 Address after: 063000 Xinhua Building, Xinhua South Li, Xinhua Lou, Tangshan City, Tangshan City, Hebei Province, No. 101, 2 doors Patentee after: Li Feng Address before: 519031, Guangdong, Zhuhai province Hengqin financial industry service base building No. 5 2-I Patentee before: The International Intellectual Property Trading Center Co. Ltd. |
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