CN1272936C - Method for transmitting communication channel information - Google Patents
Method for transmitting communication channel information Download PDFInfo
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- CN1272936C CN1272936C CN 02131487 CN02131487A CN1272936C CN 1272936 C CN1272936 C CN 1272936C CN 02131487 CN02131487 CN 02131487 CN 02131487 A CN02131487 A CN 02131487A CN 1272936 C CN1272936 C CN 1272936C
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Abstract
The present invention relates to a method for transmitting data communication channel information. A 2M external clock port of an SDH device is directly used for transmitting the data communication channel information to realize the operation, the management and the maintenance of an SDH network. The method comprises two specific methods that a pair of 2M external clock ports of two network elements are directly and correspondingly connected by transmission lines to realize ECC intercommunication between the two network elements, the data communication channel information is transmitted between the two network elements or the 2M external clock port of the SDH device is directly connected with a 2M channel of the other network by the transmission lines, management information transmitted by the 2M external clock port of the SDH device is transmitted to a far-end device or a network management center, and coaxial cables or optical cables and corresponding photoelectric converting devices can be used as the transmission lines. The method provides a special channel for transmitting the data communication information between the network elements, and whether service between the network elements is communicated has no need to be considered. Consequently, expensive devices have no need to be externally connected, a great amount of investment cost can be saved, and the operation, the management and the maintenance of the SDH network are ensured.
Description
Technical field
The present invention relates to a kind of method of carry data communication channel information, exactly, data communication channel (DCC is sent in the external clock oral instructions that relate to a kind of SDH of utilization equipment, Digital Communication Channel) method of information, to realize operation, management and the maintenance of SDH network, belong to digital information transmission technical field.
Background technology
The big characteristics of synchronous digital hierarchy SDH (Synchronous Digital Hierarchy) are exactly Operations, Administration and Maintenance (OAM, Operation Administration and Maintenance) automaticity of function is very high, can be by the webmaster terminal to each network element transmitting order to lower levels or data query, finish real-time allotment business that PDH (Pseudo-synchronous Digital Hierarchy) PDH (Plesiochronous Digital Hierarchy) system institute can't finish, locate multinomial functions such as alarm failure, on-line testing performance.
Under prior art, the data message (alarm data that the order that for example issues, inquiry come up etc.) that is used for the Operations, Administration and Maintenance OAM(Operation Administration Maintenance) is that the D1～D12 byte by Synchronous Transport Module level-N N grade (STM-N) frame transmits, that is to say, the data message that is used for OAM(Operation Administration Maintenance) is the D1～D12 byte place that is placed on the STM-N frame, on the SDH network, transmit as shown in Figure 1, and by the STM-N signal.D1～D12 byte provides the general digital communications path that all SDH network elements all can insert like this, and as embedded Control path (ECC, Embedded Control Channel) physical layer, the various OAM information of transmission between each network element, constitute the drive access of SDH managerial grid (SMN, SDH ManagementNetwork).
In the prior art, because in the SDH frame structure, be provided with the data byte that is used for the network operation, management and maintenance, promptly be arranged in the D1～D12 byte of section overhead structure.Like this, when business communicated between the network element, the D1～D12 byte by in the webmaster terminal operation STM-N frame can manage and safeguard network element.The shortcoming of this mode is: the data communication channel between each network element must communicate and just can manage.For example some nets of the equipment of certain manufacturer composition can not pass through the direct Access Network tube hub of this network, and necessary another net that passes through is transmitted ability Access Network tube hub, and these two networks do not have light/electricity mouth of connection; Though the connection of light/electricity mouthful is perhaps arranged, the Embedded Control Channel ECC of two networks can not intercommunication; Then traditional mode is management information to be converted the conversion equipment that Ethernet interface converts the 2M interface to the 2M signal by router or utilization, and the 2M path that provides by another network is sent to network management center again.The equipment of the necessary external costliness of this quasi-tradition mode has strengthened the customer investment expense.
Summary of the invention
The purpose of this invention is to provide a kind of method that overcomes the carry data communication channel information of above-mentioned defective, this method need not external transfer equipment, can save the investment cost of external expensive device.
The object of the present invention is achieved like this: a kind of method of carry data communication channel information, it is characterized in that: directly utilize the 2M external clock mouth of synchronous digital hierarchy SDH equipment to send communication channel information, to realize the Operations, Administration and Maintenance of SDH network.
The described concrete grammar of the 2M external clock mouth transmission communication channel information of SDH equipment that directly utilizes is: a pair of 2M external clock mouth of two network elements is directly coupled together accordingly with transmission line, realize the intercommunication of the Embedded Control Channel ECC between two network elements, carry data communication channel information between these two network elements.
The concrete grammar that the described 2M external clock mouth that directly utilizes SDH equipment sends communication channel information is: the 2M external clock mouth of this SDH equipment is directly connected the 2M path of another network with transmission line, its management information of sending is delivered to remote equipment or network management center.
Described transmission line can use coaxial cable or optical cable and corresponding photosignal conversion equipment.
The a pair of 2M external clock mouth of described two network elements directly couples together accordingly with transmission line and is meant: the output external clock mouth of one of them network element and input external clock mouth couple together accordingly with the input external clock mouth and the output external clock mouth of another network element respectively, set up the simplex link of the communication channel information that transmits and receive data separately respectively.
The described concrete steps of the 2M external clock mouth transmission communication channel information of SDH equipment of directly utilizing include at least:
(1) at transmit leg, earlier the multichannel 2M speed that SDH equipment CPU is sent out, the signal that contains communication channel information carry out the time slot adjustment, and three or more byte that is about to send among the D1～D12 in the STM-N frame in different paths is adjusted to specific byte;
(2) will need to adjust in the good time slot of predefined through a road three or more byte that contains among the D1～D12 of communication channel information that the external clock mouth sends;
(3) three or more byte-extraction that this is contained among the D1～D12 of communication channel information is come out, and is inserted in three or more particular time-slot of output 2M output signal, sends with 2M speed from the external clock mouth after the framing again;
(4) the recipient, when SDH equipment or network interface receive the 2M output signal from 2M speed external clock mouth, at first carry out Timing Processing again, make received signal synchronous; Carry out the frame pattern identification again, with beginning and the end byte of judging each frame, Timing Processing unit and frame pattern identification unit provide 2M clock and 8K header signal respectively again for this simultaneously;
(5) in three or more time slot known, that the transmitting terminal predefined is good, extract three or more byte among the D1～D12 that contains communication channel information, again with its with synthesize one road signal from the byte information among the D1～D12 in other path;
(6) carry out the time slot adjustment, send wherein communication channel information to CPU and handle.
The described concrete steps of the 2M external clock mouth transmission communication channel information of SDH equipment of directly utilizing can further include:
(7) recipient's SDH equipment is receiving communication channel information, and after finishing dealing with, this information can be sent to next network element through its 2M speed external clock mouth.
In the described step (3), to contain the default location that three or more time slot that three or more byte among the D1～D12 of communication channel information is inserted into output 2M output signal can use prior agreement, also can use insertion time slot according to software setting.
The 2M output signal that three or more byte among the D1～D12 of communication channel information is inserted into its three or more time slot will be contained in the described step (3) and the E1 signal can be used.
The inventive method is directly to utilize the 2M external clock oral instructions of SDH equipment to send data communication channel (DCC) information, this technical characterstic also is an advantage of the present invention, because this method is for providing the path of special-purpose carry data communication information between each network element, needn't consider whether the business between these network elements communicates, thereby can save the great amount of investment expense of external expensive device, ensure the Operations, Administration and Maintenance of SDH network.
Description of drawings
Fig. 1 is the structure chart of SDH (STM-1 frame) section overhead.
Fig. 2 is the connection diagram that adopts between two network elements of the inventive method.
Fig. 3 is an embodiment schematic flow sheet of the transmission and the reception of the inventive method.
Fig. 4 is the schematic block diagram of the transmitting-receiving general structure of the inventive method.
Fig. 5 is the circuit block diagram of a specific embodiment of the inventive method.
Embodiment
The present invention is a kind of method of carry data communication channel information, and it is directly to utilize the 2M external clock mouth of SDH equipment to send communication channel information, to realize the Operations, Administration and Maintenance of SDH network.
The concrete grammar that the present invention directly utilizes the 2M external clock mouth of SDH equipment to send communication channel information has two kinds: directly each 2M external clock mouths of two SDH network elements is coupled together (referring to Fig. 2) accordingly with coaxial cable or optical cable, just the output external clock mouth of one of them network element and input external clock mouth are coupled together accordingly with the input external clock mouth and the output external clock mouth of another network element respectively, set up the simplex link of the communication channel information that transmits and receive data separately respectively, thereby realize the intercommunication of two Embedded Control Channel ECC between the SDH network element, carry data communication channel information between these two network elements.Perhaps the 2M external clock mouth of this SDH equipment is directly inserted the 2M path of another network with coaxial cable or optical cable, its management information of sending is delivered to remote equipment or network management center.Need set up corresponding photosignal conversion equipment when really, using optical cable to connect.
Flow chart referring to the embodiment of the inventive method shown in Figure 3, in this embodiment, the byte of carrying data communication channel DCC information is the D1～D3 byte in the STM-N frame, and the 2M output signal that these three bytes that contain the D1～D3 of data communication channel DCC information are inserted into its three time slots is the E1 signal.Its concrete operations step comprises:
(1) at transmit leg, earlier the multichannel 2M speed that SDH equipment CPU is sent out, the signal that contains data communication channel DCC information carry out the time slot adjustment, and the D1～D3 byte that sends in the STM-N frame in different paths is adjusted to specific byte.
(2) will need to adjust in the good time slot of predefined through the road D1～D3 byte that contains data communication channel DCC information that the external clock mouth sends; Because the 2M signal is divided into 32 time slots, the communication channel information that comprises multichannel D1～D3 that CPU sends out is located in these 32 time slots, and need by 2M external clock mouth outwards transmit just wherein a road, so this road D1～D3 will be adjusted in three time slots that defined.
(3) this D1～D3 byte-extraction is come out, and be inserted in three particular time-slots of output E1 signal, send with 2M speed from the external clock mouth again after the framing; In this step, inserting D1～D3 byte can be the default location of arranging in advance to three particular time-slots exporting the E1 signal, also can be the insertion time slot according to software setting.
(4) the recipient, receiving equipment just can extract data communication channel DCC information correctly, easily as long as use the time slot identical with transmitting apparatus.Concrete steps are: when SDH equipment or network interface receive the E1 signal from 2M speed external clock mouth, at first carry out Timing Processing again, make received signal synchronous; Carry out the frame pattern identification again, with beginning and the end byte of judging each frame, Timing Processing unit and frame pattern identification unit provide 2M clock and 8K header signal respectively again for this simultaneously.
(5) in three time slots known, that the transmitting terminal predefined is good, extract the D1～D3 byte that contains data communication channel DCC information, again with its with synthesize one road signal from the D1～D3 byte information in other path.
(6) carry out the time slot adjustment, send wherein data communication channel DCC information to CPU and handle.
(7) recipient's SDH equipment is receiving data communication channel DCC information, and after finishing dealing with, this information can be sent to next network element through its 2M speed external clock mouth.
Referring to Fig. 4, this figure is the schematic block diagram from general structure expression each operating procedure of the present invention that sends and receive both direction.
The present invention has carried out test and has implemented, this hookup as shown in Figure 5, wherein MPC860 is the POWER PC product that MOTOROLA company produces, and also is a kind of CPU.The time slot adjustment of sending direction is to be finished by the asic chip SD539 that is used for the clog-free exchange of time slot that the applicant develops voluntarily, and it then is by can the E1 process chip DS21554 that each time slot of E1 signal is operated being finished that D1～D3 byte is inserted into the E1 signal.The timing again and the frame pattern identification of receive direction also are to be finished by E1 process chip DS21554, and the time slot adjustment is then finished by asic chip SD539.The function of its chips SD539 and DS21554 also can realize it by the on-site programmable gate array FPGA chip.The result of test is successful, has realized goal of the invention.
Claims (9)
1, a kind of method of carry data communication channel information is characterized in that: directly utilize the 2M external clock mouth of synchronous digital hierarchy SDH equipment to send communication channel information, to realize the Operations, Administration and Maintenance of SDH network.
2, the method for carry data communication channel information according to claim 1, it is characterized in that: the described concrete grammar of the 2M external clock mouth transmission communication channel information of SDH equipment that directly utilizes is: a pair of 2M external clock mouth of two network elements is directly coupled together accordingly with transmission line, realize the intercommunication of the Embedded Control Channel ECC between two network elements, carry data communication channel information between these two network elements.
3, the method for carry data communication channel information according to claim 1, it is characterized in that: the concrete grammar that the described 2M external clock mouth that directly utilizes SDH equipment sends communication channel information is: the 2M external clock mouth of this SDH equipment is directly connected the 2M path of another network with transmission line, its management information of sending is delivered to remote equipment or network management center.
4, according to the method for claim 2 or 3 described carry data communication channel informations, it is characterized in that: described transmission line can use coaxial cable or optical cable and corresponding photosignal conversion equipment.
5, the method for carry data communication channel information according to claim 2, it is characterized in that: a pair of 2M external clock mouth of described two network elements directly couples together accordingly with transmission line and is meant: the output external clock mouth of one of them network element and input external clock mouth couple together accordingly with the input external clock mouth and the output external clock mouth of another network element respectively, set up the simplex link of the communication channel information that transmits and receive data separately respectively.
6, the method for carry data communication channel information according to claim 1 is characterized in that: the described concrete steps of the 2M external clock mouth transmission communication channel information of SDH equipment of directly utilizing include at least:
(1) at transmit leg, earlier the multichannel 2M speed that SDH equipment CPU is sent out, the signal that contains communication channel information carry out the time slot adjustment, and three or more byte that is about to send among the D1～D12 in the STM-N frame in different paths is adjusted to specific byte;
(2) will need to adjust in the good time slot of predefined through a road three or more byte that contains among the D1～D12 of communication channel information that the external clock mouth sends;
(3) three or more byte-extraction that this is contained among the D1～D12 of communication channel information is come out, and is inserted in three or more particular time-slot of output 2M output signal, sends with 2M speed from the external clock mouth after the framing again;
(4) the recipient, when SDH equipment or network interface receive the 2M output signal from 2M speed external clock mouth, at first carry out Timing Processing again, make received signal synchronous; Carry out the frame pattern identification again, with beginning and the end byte of judging each frame, Timing Processing unit and frame pattern identification unit provide 2M clock and 8K header signal respectively again for this simultaneously;
(5) in three or more time slot known, that the transmitting terminal predefined is good, extract three or more byte among the D1～D12 that contains communication channel information, again with its with synthesize one road signal from the byte information among the D1～D12 in other path;
(6) carry out the time slot adjustment, send wherein communication channel information to CPU and handle.
7, the method for carry data communication channel information according to claim 1 is characterized in that: the described concrete steps of the 2M external clock mouth transmission communication channel information of SDH equipment of directly utilizing can further include:
(7) recipient's SDH equipment is receiving communication channel information, and after finishing dealing with, this information can be sent to next network element through its 2M speed external clock mouth.
8, the method for carry data communication channel information according to claim 6, it is characterized in that: in the described step (3), to contain the default location that three or more time slot that three or more byte among the D1～D12 of communication channel information is inserted into output 2M output signal can use prior agreement, also can use insertion time slot according to software setting.
9, according to the method for claim 7 or 8 described carry data communication channel informations, it is characterized in that: will contain the 2M output signal that three or more byte among the D1～D12 of communication channel information is inserted into its three or more time slot in the described step (3) and can use the E1 signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02131487 CN1272936C (en) | 2002-10-17 | 2002-10-17 | Method for transmitting communication channel information |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02131487 CN1272936C (en) | 2002-10-17 | 2002-10-17 | Method for transmitting communication channel information |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1490985A CN1490985A (en) | 2004-04-21 |
| CN1272936C true CN1272936C (en) | 2006-08-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 02131487 Expired - Lifetime CN1272936C (en) | 2002-10-17 | 2002-10-17 | Method for transmitting communication channel information |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101227317B (en) * | 2007-11-02 | 2010-06-23 | 中兴通讯股份有限公司 | Method for managing data communication channel of synchronizing digital hierarchy equipment |
| CN101938308A (en) * | 2009-06-29 | 2011-01-05 | 中兴通讯股份有限公司 | SDH equipment and method for transmitting ECC information in network consisting of same |
| CN102957634A (en) * | 2011-08-22 | 2013-03-06 | 中兴通讯股份有限公司 | Method and device for transmission of ECC (embedded control channel) information |
| CN106160915B (en) * | 2015-03-27 | 2018-09-25 | 深圳市汉易通讯有限公司 | A kind of data service branch apparatus and its shunt procedure |
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2002
- 2002-10-17 CN CN 02131487 patent/CN1272936C/en not_active Expired - Lifetime
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