CN107979442A - A kind of method, the network equipment and transmitting system for sending message and receiving message - Google Patents
A kind of method, the network equipment and transmitting system for sending message and receiving message Download PDFInfo
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- CN107979442A CN107979442A CN201610940508.9A CN201610940508A CN107979442A CN 107979442 A CN107979442 A CN 107979442A CN 201610940508 A CN201610940508 A CN 201610940508A CN 107979442 A CN107979442 A CN 107979442A
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- network equipment
- error code
- tdm
- link
- network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
- H04L1/0007—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format by modifying the frame length
- H04L1/0008—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format by modifying the frame length by supplementing frame payload, e.g. with padding bits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/24—Time-division multiplex systems in which the allocation is indicated by an address the different channels being transmitted sequentially
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/24—Time-division multiplex systems in which the allocation is indicated by an address the different channels being transmitted sequentially
- H04J3/242—Time-division multiplex systems in which the allocation is indicated by an address the different channels being transmitted sequentially the frames being of variable length
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0026—Transmission of channel quality indication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0028—Formatting
- H04L1/003—Adaptive formatting arrangements particular to signalling, e.g. variable amount of bits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0072—Error control for data other than payload data, e.g. control data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/12—Shortest path evaluation
- H04L45/123—Evaluation of link metrics
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/68—Pseudowire emulation, e.g. IETF WG PWE3
Abstract
This application provides a kind of method, the network equipment and transmitting system for sending message and receiving message.In a kind of method for sending message and receiving message, first network equipment receives the first TDM service signals via the 3rd network equipment of first link from positioned at the first time division multiplexing tdm network, according to the TDM service signals, obtain the error code status of first link and the payload data of the TDM service signals, generative circuit artificial service CES messages, the CES messages are sent to second network equipment；Second network equipment receives the CES messages, generation includes the 2nd TDM service signals of the second error code mark and the payload data, the second error code mark is used for the error code status for indicating first link, and the 2nd TDM service signals are sent to the 4th network equipment in the 2nd TDM networks.The scheme provided by the application, the link error code status that packet switching network equipment can be in transparent transmission TDM networks.
Description
Technical field
The present invention relates to field of communication technology, more particularly to a kind of method for sending message and reception message, the network equipment
And transmitting system.
Background technology
Circuit emulation service (circuit emulation service, CES) technology solves time division multiplexing (time
Division multiplexing, TDM) service signal is on data switched network (packet switch network, PSN)
Transparent transmission problem.CES provides the emulation that TDM service signals pass through a PSN so that PSN operators can be to only TDM
The user of equipment provides service.
The basic principle of CES is that the payload data of TDM service signals is packaged into CES messages in PSN entrances, is gone out in PSN
Mouth decapsulates CES messages, regenerates TDM service signals, completes transparent transmission.
In TDM network transmissions when can be used for communicating there are multilink, the network equipment can be according to the error code shape of link
State makes choice.Such as can be excessive according to signal normal link, Signal Degrade (signal degrade, SD) link, error code
The priority orders of (Excessive error, EXC) link make choice.And carried out thoroughly through PSN in above-mentioned TDM service signals
During bright transmission, error code status can not be transmitted effectively, be located at TDM networks from PSN outlets reception TDM service signals
In the network equipment and be unaware of the error code status of link, so as to can not be made choice to link.
The content of the invention
In view of this, an embodiment of the present invention provides a kind of method, the network equipment and report for sending message and receiving message
Literary transmission system, helps to transmit error code status in circuit emulation service.
Technical solution provided in an embodiment of the present invention is as follows：
First aspect, there is provided a kind of method for sending message, applied to first network equipment.The first network equipment
It is located at second network equipment in same packet switching network PSN.The described method includes：
The first network equipment is received via the 3rd network equipment of first link from positioned at time division multiplexing tdm network
TDM service signals.
The first network equipment obtains the error code status of first link and described according to the TDM service signals
The payload data of TDM service signals, generative circuit artificial service CES messages.The CES messages include error code mark and it is described
Payload data.The error code mark is used for the error code status for indicating first link.
The first network equipment sends the CES messages to second network equipment.
In above scheme, first network equipment adds error code mark in CES messages, for indicating first link
Error code status.By the CES messages, the network equipment in PSN can monitor the error code status of TDM link in network, and
The error code status can be transmitted in PSN.Thus the network in PSN exports the TDM networks for receiving TDM service signals is set
It is standby to know link error code status to select link.
Alternatively, the CESOPSN control words of the CES messages or SATOP control words are identified including the error code.By making
Error code status is transmitted with CESOPSN control words or SATOP control words, it is not necessary to is increased overhead, is quickly and easily realized saturating
Bright transmission.
Second aspect, there is provided a kind of method for receiving message, applied to second network equipment.Second network equipment
It is located at first network equipment in same packet switching network PSN.The described method includes：
Second network equipment receives the circuit emulation service CES messages from the first network equipment.The CES
Message includes the payload data and the first error code mark of the first time division multiplexing tdm service signal.The first error code mark is used
In the error code status for indicating the first link.First link is used for from positioned at the first time division multiplexing by the first network equipment
The 3rd network equipment in TDM networks receives the first TDM service signals.
Second network equipment is identified according to first error code, determines the error code status of first link, according to
The error code status of first link and the payload data generate the 2nd TDM service signals.The 2nd TDM service signal bags
Include the second error code mark and the payload data.The second error code mark is used for the error code status for indicating first link.
Second network equipment sends the 2nd TDM business to the 4th network equipment in the 2nd TDM networks
Signal.
In above scheme, the first error code mark in second network equipment identification CES messages, the second error code is identified and is added
Into TDM service signals, the 4th network equipment instruction link error code status into the 2nd TDM networks.Thus in PSN outlets
The network equipment in TDM networks can select link according to the error code status of the link of second error code mark instruction.
Alternatively, the CESOPSN control words of the CES messages or SATOP control words carry the first error code mark.It is logical
Cross and transmit error code status using CESOPSN control words or SATOP control words, it is not necessary to increase overhead, it is quickly and easily real
Existing transparent transmission.
A kind of third aspect, there is provided first network equipment.The first network equipment and second network equipment are positioned at same
In one packet switching network PSN.The first network equipment includes receiving unit, processing unit and transmitting element.
The receiving unit, for being connect via threeth network equipment of first link from positioned at time division multiplexing tdm network
Receive TDM service signals.
The processing unit, for according to the TDM service signals, obtaining the error code status of first link and described
The payload data of TDM service signals, generative circuit artificial service CES messages.The CES messages include error code mark and it is described
Payload data.The error code mark is used for the error code status for indicating first link.
The transmitting element, for sending the CES messages to second network equipment.
Alternatively, the CESOPSN control words of the CES messages or SATOP control words are identified including the error code.
The such scheme of the third aspect has identical technique effect with the scheme of first aspect.
A kind of fourth aspect, there is provided second network equipment.Second network equipment and first network equipment are positioned at same
In one packet switching network PSN.Second network equipment includes receiving unit, processing unit and transmitting element.
The receiving unit, for receiving the circuit emulation service CES messages from the first network equipment.It is described
CES messages include the payload data and the first error code mark of the first time division multiplexing tdm service signal.The first error code mark
For indicating the error code status of the first link.First link is used to answer from positioned at the first time-division by the first network equipment
The first TDM service signals are received with the 3rd network equipment in TDM networks.
The processing unit, for being identified according to first error code, determines the error code status of first link, according to
The error code status of first link and the payload data generate the 2nd TDM service signals.The 2nd TDM service signal bags
Include the second error code mark and the payload data.The error code mark is used for the error code status for indicating first link.
The transmitting element, for sending the 2nd TDM business to the 4th network equipment in the 2nd TDM networks
Signal.
Alternatively, the CESOPSN control words of the CES messages or SATOP control words are identified including first error code.
The such scheme of fourth aspect has identical technique effect with the scheme of second aspect.
5th aspect, there is provided a kind of transmitting system, including first network equipment and second network equipment.Described
One network equipment and second network equipment are located in same packet switching network PSN.
The first network equipment, sets via the 3rd network of first link from positioned at the first time division multiplexing tdm network
It is standby to receive TDM service signals, according to the TDM service signals, obtain the error code status of first link and the TDM business
The payload data of signal, generative circuit artificial service CES messages, the CES messages are sent to second network equipment.It is described
CES messages include the first error code mark and the payload data, and the first error code mark is used to indicate first link
Error code status.
Second network equipment, receives the CES messages from the first network equipment, is missed according to described first
Code mark, determines the error code status of first link, is given birth to according to the error code status of first link and the payload data
Into the 2nd TDM service signals, the 2nd TDM service signals, institute are sent to the 4th network equipment in the 2nd TDM networks
Stating the 2nd TDM service signals includes the second error code mark and the payload data, and the second error code mark is used to indicate described
The error code status of first link.
In above scheme, the network equipment in PSN transmits error code status by CES messages, and by error code status notify to
The network equipment in the TDM networks of PSN outlets.Thus the network equipment in TDM networks can be selected according to error code status
Select link.
Alternatively, the CES messages carry the error code using CESOPSN control words or SATOP control words and identify.Pass through
Error code status is transmitted using CESOPSN control words or SATOP control words, it is not necessary to is increased overhead, is quickly and easily realized
Transparent transmission.
A kind of 6th aspect, there is provided first network equipment.The first network equipment and second network equipment are positioned at same
In one packet switching network PSN.The first network equipment includes receiving interface, processor and transmission interface.
The receiving interface, for being connect via threeth network equipment of first link from positioned at time division multiplexing tdm network
Receive TDM service signals.
The processor, for according to the TDM service signals, obtaining the error code status of first link and described
The payload data of TDM service signals, generative circuit artificial service CES messages.The CES messages include error code mark and it is described
Payload data.The error code mark is used for the error code status for indicating first link.
The transmission interface, for sending the CES messages to second network equipment.
Alternatively, the CESOPSN control words of the CES messages or SATOP control words are identified including the error code.
The such scheme of 6th aspect has identical technique effect with the scheme of first aspect.
A kind of 7th aspect, there is provided second network equipment.Second network equipment and first network equipment are positioned at same
In one packet switching network PSN.Second network equipment includes receiving interface, processor and transmission interface.
The receiving interface, for receiving the circuit emulation service CES messages from the first network equipment.It is described
CES messages include the payload data and the first error code mark of the first time division multiplexing tdm service signal.The first error code mark
For indicating the error code status of the first link.First link is used to answer from positioned at the first time-division by the first network equipment
The first TDM service signals are received with the 3rd network equipment in TDM networks.
The processor, for being identified according to first error code, determines the error code status of first link, according to institute
The error code status and the payload data for stating the first link generate the 2nd TDM service signals.The 2nd TDM service signals include
Second error code identifies and the payload data.The second error code mark is used for the error code status for indicating first link.
The transmission interface, for sending the 2nd TDM business to the 4th network equipment in the 2nd TDM networks
Signal.
Alternatively, the CESOPSN control words of the CES messages or SATOP control words are identified including the error code.
The such scheme of 7th aspect has identical technique effect with the scheme of second aspect.
Brief description of the drawings
Fig. 1 is a kind of possible application scenarios schematic diagram provided in an embodiment of the present invention；
Fig. 2 is the correspondence figure of a kind of error code mark provided in an embodiment of the present invention, bit error rate grade and error code status；
Fig. 3 is the correspondence figure of a kind of error code mark provided in an embodiment of the present invention, bit error rate grade and error code status；
Fig. 4 is a kind of method flow diagram for handling message provided in an embodiment of the present invention；
Fig. 5 is a kind of structure chart of first network equipment provided in an embodiment of the present invention；
Fig. 6 is a kind of structure chart of second network equipment provided in an embodiment of the present invention；
Fig. 7 is a kind of structure chart of first network equipment provided in an embodiment of the present invention；
Fig. 8 is a kind of structure chart of second network equipment provided in an embodiment of the present invention；
Fig. 9 is a kind of structure chart of transmitting system provided in an embodiment of the present invention.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula makes a further detailed description.Obtained for those of ordinary skill in the art on the premise of not making the creative labor
The other all embodiments obtained, belong to the scope of protection of the invention.
The embodiment of the present invention description application scenarios be in order to more clearly explanation the embodiment of the present invention technical solution,
The restriction for technical solution provided in an embodiment of the present invention is not formed, those of ordinary skill in the art understand, with network
The differentiation of framework and the appearance of new business scene, technical solution provided in an embodiment of the present invention is for similar technical problem, together
Sample is applicable in.
Fig. 1 is a kind of possible application scenarios schematic diagram provided in an embodiment of the present invention.As shown in Figure 1, the packet switching network
PSN includes first network equipment and second network equipment.The first network equipment is the edge network equipment of the PSN,
With the 3rd network device communications outside the PSN.Second network equipment is the edge network equipment of the PSN, and described
The 4th network device communications outside PSN.3rd network equipment is located in the first TDM networks, the 4th network equipment position
In the 2nd TDM networks.The first TDM networks and the 2nd TDM networks can be different TDM networks or
Same TDM networks.3rd network equipment and the 4th network equipment can receive and dispatch such as the 1st grade of synchronous transfer mode
The signal of (Synchronous Transfer Module-1, STM-1) frame format.The first network equipment receives and comes from institute
The TDM service signals of the 3rd network equipment are stated, the payload data in TDM service signals is packaged to form circuit emulation service
CES messages.The payload data is, for example, the value of the payload payload fields in STM-1 frame formats.The first network equipment
The CES messages are sent to second network equipment.Second network equipment receives the CES messages, and the CES is reported
Text is decapsulated, and obtains the payload data, is increased overhead byte, is regenerated TDM service signals.Second network is set
It is standby to the 4th network equipment send described in the TDM service signals that regenerate.By circuit emulation service CES, institute is realized
The 3rd network equipment is stated to the transparent transmission of the 4th LA Management Room.The PSN can also include the 5th network equipment and
6th network equipment.5th network equipment and the 6th network equipment are all the edge network equipment of the PSN.It is described
5th network equipment performs the operation similar with the first network equipment.6th network equipment performs and second net
The similar operation of network equipment.The TDM service signals that 3rd network equipment is sent, are given birth to again in the 6th network equipment
Into, and sent to the 4th network equipment.Thus, the 4th network equipment can at the same time from second network equipment and
6th network equipment receives the TDM service signals with same payload data.4th network equipment can select it
In a signal as main signal, another is as space signal.
Since CES messages are not used to transmit the field of error code status, above-mentioned TDM service signals carry out transparent biography through PSN
In defeated process, the 3rd network equipment to the error code status of the first link between the first network equipment, Yi Jisuo
The described 4th cannot be all delivered to by stating the error code status of the 3rd network equipment to the second link between the 5th network equipment
The network equipment.Therefore the 4th network equipment cannot according to the error code status of first link and second link come into
The active and standby signal behavior of row.
In CES messages using edge-to-edge pseudo wire emulation (pseudo-wire emulation edge to edge,
PWE3) control word realizes operation management maintainance (OAM, operation administration and maintenance) work(
Energy.The embodiment of the present invention transmits error code status using the PWE3 control words.The PWE3 control words are further subdivided into tying
Structureization emulation (structure-aware TDM circuit emulation service over PSN, CESOPSN) control
Word and unstructured emulation (structure-agnostic TDM over packet, SATOP) control word.In structured CES
PWE3 control words described in message transmissions is CESOPSN control words.The PWE3 control words described in unstructured CES message transmissions
For SATOP control words.
For CESOPSN control words, Internet engineering task force (The Internet Engineering Task
Force, abbreviation IETF) RFC 5086 (the structuring time multiplexing circuit artificial service based on the packet switching network, Structure-
Aware Time Division Multiplexed Circuit Emulation Service over Packet
Switched Network) in 4.3 sections the forms of CESOPSN control words is described in detail.The embodiment of the present invention uses
L field (1bit) and M field (2bit) in CESOPSN control words, length totally 3 bit.3 bit can be wrapped by combination
Include 000,001,010,011,100,101,110 and 111 totally 8 mark.000,010,100 have been used in RFC5086 definition,
Remaining 001,011,101,110 and 111 totally 5 marks can be used for extending as reservation.The embodiment of the present invention can select 001
Identified with 011 as error code, to indicate error code status.Such as correspondence shown in Fig. 2 can be established.In shown in Fig. 2,
L field (1bit) and M field (2bit) form 3 bit values in CESOPSN control words.Its intermediate value 001 corresponds to the bit error rate and exceedes
Thresholding 10-3、10-4Or 10-5Grade, value 011 correspond to the bit error rate exceeded thresholding 10-6、10-7、10-8Or 10-9Grade.Fig. 2
Shown correspondence by way of example only, selects which mark, mark and each threshold bit error rate etc. more than in 5 marks
The correspondence and mark and the correspondence of each error code status of level can be carried out any adjustment.
For SATOP control words, IETF RFC 4553 (the unstructured time division multiplexing based on the packet switching network,
Structure-Agnostic Time Division Multiplexing over Packet) in 4.3.1 section to SATOP control
The form of word processed is described in detail.The embodiment of the present invention uses the RSV fields (2bit) in SATOP control words, length totally 2
Bit.2 bit by combination can include 00,01,10,11 totally 4 mark.RFC4533 definition in 01,10,11 as
Reservation can be used for extending.The embodiment of the present invention can select 01 and 10 to be identified as error code, to indicate error code status.Such as can
To establish the correspondence shown in Fig. 3.In shown in Fig. 3, RSV fields (2bit) form 2 bit values in SATOP control words.Wherein
Value 01 corresponds to the bit error rate and has exceeded thresholding 10-3、10-4Or 10-5Grade, value 10 correspond to the bit error rate exceeded thresholding 10-6、10-7、
10-8Or 10-9Grade.Correspondence shown in Fig. 3 by way of example only, selects which mark, mark more than in 3 marks
Know and can be carried out appointing with the correspondence of the correspondence of each threshold bit error rate grade and mark and each error code status
Meaning adjustment.
Fig. 4 is a kind of method flow diagram for handling message provided in an embodiment of the present invention.Method can be used for figure shown in Fig. 4
Scene shown in 1.With reference to Fig. 1 to Fig. 4, a kind of method for handling message provided in an embodiment of the present invention is introduced.
401, threeth network equipment of the first network equipment via the first link from positioned at the first time division multiplexing tdm network
Receive the first TDM service signals.
Frame format is such as can be STM-1 used in the first TDM service signals.
402, the first network equipment is according to the first TDM service signals, the error code shape of acquisition first link
The payload data of state and the first TDM service signals, generative circuit artificial service CES messages, send to second network equipment
The CES messages.The CES messages include the first error code mark and the payload data.The first error code mark is used for
Indicate the error code status of first link.
The first network equipment detects the bit error rate on first link, could be aware that the error code of first link
State and corresponding first error code mark.Such as during using CESOPSN control words, according to the correspondence of Fig. 2, the bit error rate is
10-6Grade, corresponding error code status are SD, and corresponding first error code is identified as 011；The bit error rate is 10-5Grade, corresponding mistake
Code state is EXC, and corresponding first error code is identified as 001.Such as during using SATOP control words, according to the correspondence of Fig. 3,
The bit error rate is 10-6Grade, corresponding error code status are SD, and corresponding first error code is identified as 10；The bit error rate is 10-5Grade is right
The error code status answered is EXC, and corresponding first error code is identified as 10.
The first network equipment obtains payload data from the first TDM service signals.Payload data, that is, the institute
State the first TDM service signals and remove the remaining data after overhead byte, be, for example, the payload payload words in STM-1 frame formats
The value of section.The first network equipment generation includes the CES messages of the first error code mark and the payload data.Wherein institute
The CESOPSN control words of the CES messages can be placed on by stating the first error code mark, such as in L field and M field.It is described
First error code mark can also be placed in the SATOP control words of the CES messages, such as RSV fields.By by the CES
Message is in PSN to other network equipment transmission so that other network equipments in PSN can also monitor chain in TDM networks
The error code status on road.The first network equipment will send the CES messages to second network equipment.The first network
Equipment and second network equipment are located in same packet switching network PSN, the edge network equipment all for the PSN.
403, second network equipment receives the CES messages from the first network equipment, generates the 2nd TDM
Service signal, the 2nd TDM service signals include the second error code mark and the payload data, and the second error code mark is used
In the error code status for indicating first link.
After second network equipment receives the CES messages, the first TDM business is obtained from the CES messages
The payload data of signal.Second network equipment is identified always according to the first error code in the CES messages, determines described first
The error code status of link, such as EXC or SD.Second network equipment is according to the error code status of first link and described net
Lotus data generate the 2nd TDM service signals.The process of the generation for example can be second network equipment in the payload
Increase is used for the overhead byte for sending TDM service signals in data basis, and the second error code mark is added in the overhead byte.
Identified by second error code to indicate the error code status of first link.The overhead byte is, for example, STM-1 frame lattice
Section overhead and path overhead in formula.The second error code mark for example can be Huawei OSN1500, OSN3500 and OSN7500
Equipment is used for the bit that B1_EXC, B2_EXC, B3_EXC, B1_SD, B2_SD or B3_SD alarm signal are sent in STM-1 frames
Value.Regenerator section B1 or multiplex section B2 reaches EXC states, B1_SD or B2_SD in wherein B1_EXC or B2_EXC instruction STM-1 frames
Regenerator section B1 or multiplex section B2 reaches SD states in instruction STM-1 frames, and B3_EXC or B3_SD indicate higher order path in STM-1 frames
B3 reaches EXC or SD states.
404, second network equipment sends the 2nd TDM to the 4th network equipment in the 2nd TDM networks
Service signal.
Thus, the 4th network equipment can know according to the second error code mark in the 2nd TDM service signals
The error code status of first link.Further when the 4th network equipment also receives what the 6th network equipment was sent
Including the second error code mark the 3rd TDM service signals when, what the 4th network equipment can include according to TDM service signals
Second error code mark makes choice.Such as the second error code mark instruction of the TDM service signals received from second network equipment misses
Code state be SD, and the second error code mark of the TDM service signals received from the 6th network equipment indicates that error code status is EXC, institute
TDM service signals that the 4th network equipment can select to receive from second network equipment are stated as main signal, will be from described
The TDM service signals that 6th network equipment receives are as space signal.
Thus the transparent transmission TDM service signals of the 3rd network equipment via packet switching network to the 4th network equipment
During, maintain the transmission of error code status.By the transmission of error code status, the 4th network equipment can select communication matter
Measure the signal of more preferable link.Error code status is transmitted in CES messages above, uses original PWE3 control words, it is not necessary to increase
Overhead, quickly and easily realizes transparent transmission.
Fig. 5 is a kind of structure diagram of first network equipment 500 provided in an embodiment of the present invention.The first network equipment
500 can be used for performing step 401 and step 402 in Fig. 4.500 and second network equipment of first network equipment is positioned at same
In packet switching network PSN.First network equipment 500 includes receiving unit 501, processing unit 502 and transmitting element 503.
Receiving unit 501, for being received via threeth network equipment of first link from positioned at time division multiplexing tdm network
TDM service signals.
Processing unit 502, for according to the TDM service signals, obtaining the error code status of first link and described
The payload data of TDM service signals, generative circuit artificial service CES messages.The CES messages include the first error code mark and
The payload data.The first error code mark is used for the error code status for indicating first link.
Transmitting element 503, for sending the CES messages to second network equipment.
Alternatively, the CESOPSN control words of the CES messages or SATOP control words are identified including first error code.
Fig. 6 is a kind of structure diagram of second network equipment 600 provided in an embodiment of the present invention.Second network equipment
600 can be used for performing step 403 and step 404 in Fig. 4.Second network equipment 600 and first network equipment are positioned at same
In packet switching network PSN.Second network equipment 600 includes receiving unit 601, processing unit 602 and transmitting element 603.
Receiving unit 601, for receiving the circuit emulation service CES messages from the first network equipment.The CES
Message includes the payload data and the first error code mark of the first time division multiplexing tdm service signal.The first error code mark is used
In the error code status for indicating the first link.First link is used for from positioned at the first time division multiplexing by the first network equipment
The 3rd network equipment in TDM networks receives the first TDM service signals.
Processing unit 602, for being identified according to first error code, determines the error code status of first link, according to
The error code status of first link and the payload data generate the 2nd TDM service signals.The 2nd TDM service signal bags
Include the second error code mark and the payload data.The second error code mark is used for the error code status for indicating first link.
Transmitting element 603, for sending the 2nd TDM business to the 4th network equipment in the 2nd TDM networks
Signal.
Alternatively, the CESOPSN control words of the CES messages or SATOP control words are identified including first error code.
Fig. 7 is a kind of structure diagram of first network equipment 700 provided in an embodiment of the present invention.The first network equipment
700 can be used for performing step 401 and step 402 in Fig. 4.First network equipment 700 is with second network equipment positioned at same
In packet switching network PSN.First network equipment 700 includes receiving interface 701, processor 702 and transmission interface 703.
Receiving interface 701, for being received via threeth network equipment of first link from positioned at time division multiplexing tdm network
TDM service signals.
Processor 702, for according to the TDM service signals, obtaining the error code status of first link and the TDM
The payload data of service signal, generative circuit artificial service CES messages.The CES messages include the first error code mark and institute
State payload data.The first error code mark is used for the error code status for indicating first link.
Transmission interface 703, for sending the CES messages to second network equipment.
Alternatively, the CESOPSN control words of the CES messages or SATOP control words are identified including first error code.
First network equipment 700 can be Packet Transport Network (packet transport network, PTN) equipment.Example
Such as Huawei PTN 910, PTN 950, PTN 960, PTN 3900 and PTN 7900.
Receiving interface 701 can be SDH interfaces.The SDH interfaces are optical interface, electrical interface or its combination.
Processor 702 can be central processing unit (central processing unit, CPU), network processing unit
The combination of (network processor, NP) or CPU and NP.
Transmission interface 703 can be Ethernet interface.The Ethernet interface is optical interface, electrical interface or its combination.
First network equipment 700 can be used for the function of realizing first network equipment 500.Wherein receiving interface 701 can be with
Receiving unit 501 is used for realization, processor 702 can be used for realizing processing unit 502, and transmission interface 703 can be used for realizing
Transmitting element 503.
Fig. 8 is a kind of structure diagram of second network equipment 800 provided in an embodiment of the present invention.Second network equipment
800 can be used for performing step 403 and step 404 in Fig. 4.Second network equipment 800 and first network equipment are positioned at same
In packet switching network PSN.Second network equipment 800 includes receiving interface 801, processor 802 and transmission interface 803.
Receiving interface 801, for receiving the circuit emulation service CES messages from the first network equipment.The CES
Message includes the payload data and the first error code mark of the first time division multiplexing tdm service signal.The first error code mark is used
In the error code status for indicating the first link.First link is used for from positioned at the first time division multiplexing by the first network equipment
The 3rd network equipment in TDM networks receives the first TDM service signals.
Processor 802, for being identified according to first error code, determines the error code status of first link, according to institute
The error code status and the payload data for stating the first link generate the 2nd TDM service signals.The 2nd TDM service signals include
Second error code identifies and the payload data.The second error code mark is used for the error code status for indicating first link.
Transmission interface 801, for sending the 2nd TDM business to the 4th network equipment in the 2nd TDM networks
Signal.
Alternatively, the CESOPSN control words of the CES messages or SATOP control words are identified including first error code.
Second network equipment 800 can be Packet Transport Network (packet transport network, PTN) equipment.Example
Such as Huawei PTN 910, PTN 950, PTN 960, PTN 3900 and PTN 7900.
Receiving interface 801 can be Ethernet interface.The Ethernet interface is optical interface, electrical interface or its combination.
Processor 802 can be central processing unit (central processing unit, CPU), network processing unit
The combination of (network processor, NP) or CPU and NP.
Transmission interface 803 can be SDH interfaces.The SDH interfaces are optical interface, electrical interface or its combination.
Second network equipment 800 can be used for the function of realizing second network equipment 600.Wherein receiving interface 801 can be with
Receiving unit 601 is used for realization, processor 802 can be used for realizing processing unit 602, and transmission interface 803 can be used for realizing
Transmitting element 603.
Fig. 9 is a kind of structure diagram of transmitting system provided in an embodiment of the present invention.The transmitting system
Including first network equipment and second network equipment.The first network equipment and second network equipment are located at same point
In group switching network PSN.The first network equipment and second network equipment can be the first net in Fig. 5 and Fig. 6 respectively
500 and second network equipment 600 of network equipment.The first network equipment and second network equipment can also be Fig. 7 respectively
With 700 and second network equipment 800 of first network equipment in Fig. 8.
The first network equipment, sets via the 3rd network of first link from positioned at the first time division multiplexing tdm network
It is standby to receive the first TDM service signals, according to the first TDM service signals, the error code status of acquisition first link and institute
The payload data of the first TDM service signals is stated, generative circuit artificial service CES messages, institute is sent to second network equipment
State CES messages.The CES messages include the first error code mark and the payload data, and the first error code mark is used to refer to
Show the error code status of first link.
Second network equipment, receives the CES messages from the first network equipment, is missed according to described first
Code mark, determines the error code status of first link, is given birth to according to the error code status of first link and the payload data
Into the 2nd TDM service signals, the 2nd TDM service signals, institute are sent to the 4th network equipment in the 2nd TDM networks
Stating the 2nd TDM service signals includes the second error code mark and the payload data, and the second error code mark is used to indicate described
The error code status of first link.
In system above, the network equipment in PSN transmits error code status by CES messages, and by error code status notify to
The network equipment in the TDM networks of PSN outlets.Thus the network equipment in TDM networks can be selected according to error code status
Select link.Alternatively, the CES messages carry first error code using CESOPSN control words or SATOP control words and identify.
Error code status is transmitted by using CESOPSN control words or SATOP control words, it is not necessary to increase overhead, quickly and easily
Realize transparent transmission.
Can be with one of ordinary skill in the art will appreciate that realizing that all or part of step in above-described embodiment method is
Completed by program come instruction processing unit, the program can be stored in computer-readable recording medium, and the storage is situated between
Matter is non-transitory (English：Non-transitory) medium, such as random access memory, read-only storage, flash
Device, hard disk, solid state hard disc, tape (English：Magnetic tape), floppy disk (English：Floppy disk), CD (English：
Optical disc) and its any combination.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can readily occur in,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with scope of the claims
Subject to.
Claims (10)
1. a kind of method for sending message, applied to first network equipment, the first network equipment and the second network equipment position
In same packet switching network PSN, it is characterised in that the described method includes：
The first network equipment receives TDM via the 3rd network equipment of first link from positioned at time division multiplexing tdm network
Service signal；
The first network equipment obtains the error code status of first link and the TDM industry according to the TDM service signals
The payload data of business signal, generative circuit artificial service CES messages, the CES messages include error code mark and the payload
Data, the error code mark are used for the error code status for indicating first link；
The first network equipment sends the CES messages to second network equipment.
2. the method as described in claim 1, it is characterised in that CESOPSN control words or the SATOP control of the CES messages
Word is identified including the error code.
3. a kind of method for receiving message, applied to second network equipment, second network equipment and first network equipment position
In same packet switching network PSN, it is characterised in that the described method includes：
Second network equipment receives the circuit emulation service CES messages from the first network equipment, the CES messages
Include the payload data and the first error code mark of the first time division multiplexing tdm service signal, the first error code mark is used to refer to
Show the error code status of the first link, first link is used for from positioned at the first time division multiplexing tdm by the first network equipment
The 3rd network equipment in network receives the first TDM service signals；
Second network equipment is identified according to first error code, the error code status of first link is determined, according to described
The error code status of first link and the payload data generate the 2nd TDM service signals, and the 2nd TDM service signals include the
Two error codes identify and the payload data, and the second error code mark is used for the error code status for indicating first link；
Second network equipment sends the 2nd TDM service signals to the 4th network equipment in the 2nd TDM networks.
4. method as claimed in claim 3, it is characterised in that CESOPSN control words or the SATOP control of the CES messages
Word is identified including first error code.
5. a kind of first network equipment, the first network equipment and second network equipment are located at same packet switching network PSN
In, it is characterised in that the first network equipment includes：
Receiving unit, for receiving TDM business via threeth network equipment of first link from positioned at time division multiplexing tdm network
Signal；
Processing unit, for according to the TDM service signals, obtaining the error code status of first link and the TDM business
The payload data of signal, generative circuit artificial service CES messages, the CES messages include error code mark and the payload number
According to the error code mark is used for the error code status for indicating first link；
Transmitting element, for sending the CES messages to second network equipment.
6. first network equipment as claimed in claim 5, it is characterised in that the CESOPSN control words of the CES messages or
SATOP control words are identified including the error code.
7. a kind of second network equipment, second network equipment and first network equipment are located at same packet switching network PSN
In, it is characterised in that second network equipment includes：
Receiving unit, for receiving the circuit emulation service CES messages from the first network equipment, in the CES messages
Payload data and the first error code mark including the first time division multiplexing tdm service signal, the first error code mark are used to indicate
The error code status of first link, first link are used for from positioned at the first time division multiplexing tdm net by the first network equipment
The 3rd network equipment in network receives the TDM service signals；
Processing unit, for being identified according to first error code, determines the error code status of first link, according to described first
The error code status of link and the payload data generate the 2nd TDM service signals, and the 2nd TDM service signals, which include second, to be missed
Code mark and the payload data, the second error code mark are used for the error code status for indicating first link；
Transmitting element, for sending the 2nd TDM service signals to the 4th network equipment in the 2nd TDM networks.
8. second network equipment as claimed in claim 7, it is characterised in that the CESOPSN control words of the CES messages or
SATOP control words are identified including first error code.
A kind of 9. transmitting system, it is characterised in that including first network equipment and second network equipment, the first network
Equipment and second network equipment are located in same packet switching network PSN,
The first network equipment, connects via the 3rd network equipment of first link from positioned at the first time division multiplexing tdm network
TDM service signals are received, according to the TDM service signals, obtain the error code status of first link and the TDM service signals
Payload data, generative circuit artificial service CES messages, the CES messages, the CES are sent to second network equipment
Message includes the first error code mark and the payload data, and the first error code mark is used for the mistake for indicating first link
Code state；
Second network equipment, receives the CES messages from the first network equipment, according to the first error code mark
Know, determine the error code status of first link, according to the error code status of first link and payload data generation the
Two TDM service signals, the 2nd TDM service signals are sent to the 4th network equipment in the 2nd TDM networks, and described the
Two TDM service signals include the second error code mark and the payload data, and the second error code mark is used to indicate described first
The error code status of link.
10. transmitting system as claimed in claim 9, it is characterised in that the CESOPSN control words of the CES messages or
SATOP control words are identified including first error code.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610940508.9A CN107979442B (en) | 2016-10-25 | 2016-10-25 | Method for sending message and receiving message, network equipment and message sending system |
| PCT/CN2017/106907 WO2018077110A1 (en) | 2016-10-25 | 2017-10-19 | Method for sending packets and receiving packets, and network device and packet sending system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610940508.9A CN107979442B (en) | 2016-10-25 | 2016-10-25 | Method for sending message and receiving message, network equipment and message sending system |
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| Publication Number | Publication Date |
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| CN107979442A true CN107979442A (en) | 2018-05-01 |
| CN107979442B CN107979442B (en) | 2020-02-21 |
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| WO (1) | WO2018077110A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114039941A (en) * | 2021-10-22 | 2022-02-11 | 烽火通信科技股份有限公司 | Method and system for realizing transmission of TDM signal in packet switching network |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101217452A (en) * | 2007-01-05 | 2008-07-09 | 华为技术有限公司 | A TDM operation transmission method, device and system by packet switching network |
| CN101686185A (en) * | 2008-09-23 | 2010-03-31 | 华为技术有限公司 | Method, device and system for transmitting TDM services in packet network |
| CN102388582A (en) * | 2011-08-29 | 2012-03-21 | 华为技术有限公司 | Transmission method for adding idle bit, transmitter and network system |
| US20130089328A1 (en) * | 2009-03-20 | 2013-04-11 | Broadcom Corporation | Methods and apparatus for extending mac control messages in epon |
| CN105933087A (en) * | 2016-04-18 | 2016-09-07 | 华为技术有限公司 | Data processing method, related equipment and system in Ethernet |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101415276A (en) * | 2008-11-24 | 2009-04-22 | 中兴通讯股份有限公司 | Method and equipment for sending and receiving data |
| CN101714951B (en) * | 2009-12-03 | 2012-08-08 | 华为技术有限公司 | Method and equipment for transmitting and receiving service data in CES |
| CN103684708B (en) * | 2012-09-03 | 2018-11-23 | 南京中兴新软件有限责任公司 | CES data transmission method for uplink, device and CES data receiver method, device |
| US9854453B2 (en) * | 2013-05-03 | 2017-12-26 | Interdigital Patent Holdings, Inc. | Methods for WiFi sectorization MAC enhancement |
-
2016
- 2016-10-25 CN CN201610940508.9A patent/CN107979442B/en active Active
-
2017
- 2017-10-19 WO PCT/CN2017/106907 patent/WO2018077110A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101217452A (en) * | 2007-01-05 | 2008-07-09 | 华为技术有限公司 | A TDM operation transmission method, device and system by packet switching network |
| CN101686185A (en) * | 2008-09-23 | 2010-03-31 | 华为技术有限公司 | Method, device and system for transmitting TDM services in packet network |
| US20130089328A1 (en) * | 2009-03-20 | 2013-04-11 | Broadcom Corporation | Methods and apparatus for extending mac control messages in epon |
| CN102388582A (en) * | 2011-08-29 | 2012-03-21 | 华为技术有限公司 | Transmission method for adding idle bit, transmitter and network system |
| CN105933087A (en) * | 2016-04-18 | 2016-09-07 | 华为技术有限公司 | Data processing method, related equipment and system in Ethernet |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114039941A (en) * | 2021-10-22 | 2022-02-11 | 烽火通信科技股份有限公司 | Method and system for realizing transmission of TDM signal in packet switching network |
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| CN107979442B (en) | 2020-02-21 |
| WO2018077110A1 (en) | 2018-05-03 |
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