CN102497311B - The method of transmission/receiver section expense, device and transmission system in SDH/SONET circuit simulation - Google Patents
The method of transmission/receiver section expense, device and transmission system in SDH/SONET circuit simulation Download PDFInfo
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- CN102497311B CN102497311B CN201110400423.9A CN201110400423A CN102497311B CN 102497311 B CN102497311 B CN 102497311B CN 201110400423 A CN201110400423 A CN 201110400423A CN 102497311 B CN102497311 B CN 102497311B
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- sdh
- section overhead
- sonet
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Abstract
The invention discloses a kind of method of transmission/receiver section expense, device and transmission system in SDH/SONET circuit simulation, relate to communication technical field.Described method includes: section overhead is encapsulated in the predeterminated position in the PWE3 message carrying SDH/SONET payload by transmitting terminal；The described PWE3 message being packaged with section overhead is sent to receiving terminal by described transmitting terminal；Receiving terminal receives the PWE3 message carrying SDH/SONET payload, and the predeterminated position in described PWE3 message is packaged with section overhead；Described receiving terminal predeterminated position from described PWE3 message obtains described section overhead.The embodiment of the present invention is mainly used in SDH/SONET circuit simulation during span line expense.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of imitative at SDH/SONET circuit
The method of transmission/receiver section expense, device and transmission system in very.
Background technology
Along with the development of communication technology, (English full name is the end-to-end emulation of pseudo-wire: Pseudowire
Emulation Edge-to-Edge, hereinafter referred to as: PWE3) technology is widely used in interconnection
(English full name is: Internet Protocol/Multiprotocol in fidonetFido/multiprotocol label switching
Label Switching, hereinafter referred to as: IP/MPLS) network emulates time division multiplex (English
Full name is: Time Division Multiplexing, hereinafter referred to as: TDM) signal.
For SDH/Synchronous Optical Network, (English full name is: Synchronous Digital
Hierarchy/Synchronous Optical Network, hereinafter referred to as: SDH/SONET)
The standard of emulation mainly request for comments (English full name is: Request For Comments, with
The most referred to as: RFC) 4842.Its main thought is will at the equipment emulating beginning
SDH/SONET frame is delivered to IP/MPLS net after being packaged as PWE3 message by certain length
Network, by bag transmission PWE3 message in IP/MPLS network, the equipment terminated in emulation releases
PWE3 message encapsulates, and restores SDH/SONET frame.Concrete, RFC4842 definition
PWE3 message encapsulation format can be as shown in Figure 1.Wherein, PSN and Multiplexing Layer
Headers represents that (English full name is: Packet Switching for packet network and multiplex layer head
Network, hereinafter referred to as PSN), CEP header represents circuit simulation based on packet switch
(English full name is: Circuit Emulation over Packet, hereinafter referred to as CEP) head,
SDH/SONET Fragment represents the section of the payload (payload) of SDH/SONET frame.
Under normal circumstances, the content of SDH/SONET frame be broadly divided into section overhead (English full name is:
Section Overhead, hereinafter referred to as SOH) and payload two large divisions, SOH is mainly one
A little management, maintenance information, payload is then mainly user data.But, it will be seen from figure 1 that
In the simulation standard that RFC4842 specifies, define only SDH/SONET payload, and do not have
It is defined SOH.Therefore, in CEP, it is impossible to realize the transmission of SOH.
In order to transmit SOH in CEP in prior art, SOH is individually packaged into one specially
Use expense message, transmit together with the PWE3 message carrying SDH/SONET payload.
But, due to the transmission frequency of SDH/SONET frame be fixing (such as: per second 8000
Frame), the PWE3 message frequencies formed after emulation should also be fixing, it is assumed for example that every PWE3
Encapsulating 1/3 SDH/SONET frame in message, the transmission frequency of the most described PWE3 message should
Fixing is that 24000 frames are per second, and a SDH/SONET frame is sent by guarantee.Right
In recipient, originally can be realized a SDH/SONET by the frequency receiving PWE3 message
Frame completely receives, but after independent package specific expense message, can destroy this and fix
Frequency relation, cause business occur instability.
Summary of the invention
The present invention provides a kind of side of transmission/receiver section expense in SDH/SONET circuit simulation
Method, device and transmission system, transmit SOH while CEP emulates, promote SDH/SONET
The compatibility of network, it is achieved keep the constant of PWE3 message frequencies while SOH transmission, with
And achieve a butt joint with the CEP of standard.
On the one hand, the present invention provides a kind of delivery section expense in SDH/SONET circuit simulation
Method, including:
Section overhead is encapsulated in the PWE3 message carrying SDH/SONET payload by transmitting terminal
Predeterminated position；
The described PWE3 message being packaged with section overhead is sent to receiving terminal by described transmitting terminal.
On the other hand, the present invention provides one receiver section in SDH/SONET circuit simulation to open
The method of pin, including:
Receiving terminal receives the PWE3 message carrying SDH/SONET payload, and described PWE3 reports
Predeterminated position in literary composition is packaged with section overhead；
Described receiving terminal predeterminated position from described PWE3 message obtains described section overhead.
On the other hand, the present invention provides one delivery section in SDH/SONET circuit simulation to open
The device of pin, including:
Encapsulation unit, for being encapsulated in the PWE3 carrying SDH/SONET payload by section overhead
Predeterminated position in message；
Transmitting element, for being sent to receiving terminal by the described PWE3 message being packaged with section overhead.
On the other hand, the present invention provides one receiver section in SDH/SONET circuit simulation to open
The device of pin, including:
Receive unit, for receiving the PWE3 message carrying SDH/SONET payload, described
Predeterminated position in PWE3 message is packaged with section overhead；
Acquiring unit, obtains described section overhead for the predeterminated position from described PWE3 message.
On the other hand, the present invention provides a kind of and sends/reception in SDH/SONET circuit simulation
The transmission system of section overhead, including:
Transmitting terminal, for being encapsulated in the PWE3 report carrying SDH/SONET payload by section overhead
Predeterminated position in literary composition, and the described PWE3 message being packaged with section overhead is sent to receiving terminal；
Receiving terminal, for receiving the PWE3 message carrying SDH/SONET payload, and from institute
State the predeterminated position in PWE3 message and obtain described section overhead.
One transmission/receiver section in SDH/SONET circuit simulation that the embodiment of the present invention provides
The method of expense, device and transmission system, transmitting terminal is reported by section overhead is encapsulated in PWE3
Predeterminated position in literary composition, and the described PWE3 message being packaged with section overhead is sent to receiving terminal,
Receiving terminal receives and section overhead is encapsulated in the PWE3 message carrying SDH/SONET payload, and
Predeterminated position from described PWE3 message obtains described section overhead.
Due to span line expense while carrying the PWE3 message of SDH/SONET payload,
Compared with encapsulation section expense independent with prior art, improve and SDH/SONET network is held concurrently
Capacitive, it is achieved section overhead transmission while keep PWE3 message frequencies constant, and with mark
Accurate CEP achieves a butt joint.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to reality
Execute the required accompanying drawing used in example or description of the prior art to be briefly described, it should be apparent that below,
Accompanying drawing in description is only some embodiments of the present invention, for those of ordinary skill in the art,
On the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the PWE3 message encapsulation format of RFC4842 definition in prior art；
Fig. 2 a is that in the embodiment of the present invention, one delivery section in SDH/SONET circuit simulation is opened
The flow chart of the method for pin；
Fig. 2 b is that in the embodiment of the present invention, one receiver section in SDH/SONET circuit simulation is opened
The flow chart of the method for pin；
Fig. 3 is a kind of delivery section expense in SDH/SONET circuit simulation in the embodiment of the present invention
The structure chart of device；
Fig. 4 is a kind of receiver section expense in SDH/SONET circuit simulation in the embodiment of the present invention
The structure chart of device；
Fig. 5 is the form of CEP head in the embodiment of the present invention；
Fig. 6 is the form of the CEP head of a kind of PWE3 message in the embodiment of the present invention；
Fig. 7 is that in the embodiment of the present invention, the CEP head of a kind of PWE3 message carries A and B two
Section overhead exemplary plot；
Fig. 8 is that in the embodiment of the present invention, the CEP head of a kind of PWE3 message carries section overhead C's
Exemplary plot；
Fig. 9 is that in the embodiment of the present invention, the CEP head of a kind of PWE3 message does not carry showing of section overhead
Illustration；
Figure 10 is a kind of delivery section expense in SDH/SONET circuit simulation in the embodiment of the present invention
The structure chart of device；
Figure 11 is a kind of receiver section expense in SDH/SONET circuit simulation in the embodiment of the present invention
The structure chart of device；
Figure 12 is the signal of a kind of PWE3 message format containing extended field in the embodiment of the present invention
Figure；
Figure 13 is the form schematic diagram of the CEP head using PWE3 message in the embodiment of the present invention；
Figure 14 is that in the embodiment of the present invention, PWE3 message carries four section overheads A, B, C, D
Exemplary plot；
Figure 15 is the exemplary plot that in the embodiment of the present invention, PWE3 message does not carry section overhead；
Figure 16 is a kind of delivery section expense in SDH/SONET circuit simulation in the embodiment of the present invention
The structure chart of device；
Figure 17 is a kind of receiver section expense in SDH/SONET circuit simulation in the embodiment of the present invention
The structure chart of device；
Figure 18 is a kind of transmission/reception in SDH/SONET circuit simulation in the embodiment of the present invention
The structure chart of the transmission system of section overhead.
Detailed description of the invention
Send out in SDH/SONET circuit simulation the embodiment of the present invention is a kind of below in conjunction with the accompanying drawings
Give/method of receiver section expense, device and transmission system be described in detail.
One embodiment of the present of invention provides a kind of delivery section in SDH/SONET circuit simulation
The method of expense, as shown in Figure 2 a, the method includes:
101, section overhead is encapsulated in the PWE3 message carrying SDH/SONET payload by transmitting terminal
In predeterminated position；
102, the described PWE3 message being packaged with section overhead is sent to receiving terminal by described transmitting terminal.
An alternative embodiment of the invention additionally provides a kind of in SDH/SONET circuit simulation
The method of receiver section expense, as shown in Figure 2 b, the method includes:
103, receiving terminal receives the PWE3 message carrying SDH/SONET payload, described PWE3
Predeterminated position in message is packaged with section overhead；
104, described receiving terminal predeterminated position from described PWE3 message obtains described section overhead.
Above-mentioned transmission/receiver section in SDH/SONET circuit simulation that the embodiment of the present invention provides
The method of expense, for transmitting terminal, carries the PWE3 of SDH/SONET payload by utilization
Message transmissions section overhead, it is not necessary to encapsulate extra message and carry out span line expense, it is achieved that passing
Keeping the constant of PWE3 message transmission frequency while defeated section overhead, it is right to improve
The compatibility of SDH/SONET network.For receiving terminal, by reception be packaged with section overhead and
Carry the PWE3 message of SDH/SONET payload, while obtaining section overhead, it is ensured that
Normally receive and the PWE3 message of SDH/SONET payload receive the constant of frequency.
One embodiment of the present of invention also provides for a kind of transmission in SDH/SONET circuit simulation
The device of section overhead, as it is shown on figure 3, described device includes: encapsulation unit 21 and transmitting element
22。
Wherein, encapsulation unit 21 carries SDH/SONET payload for being encapsulated in by section overhead
Predeterminated position in PWE3 message.
Transmitting element 22 for being sent to reception by the described PWE3 message being packaged with section overhead
End.
Described dispensing device achieves to be encapsulated in section overhead and carries SDH/SONET payload
Predeterminated position in PWE3 message, and it is sent to receiving terminal.
Another embodiment of the present invention also provides for a kind of reception in SDH/SONET circuit simulation
The device of section overhead, as shown in Figure 4, described device includes: receive unit 31 and acquiring unit
32。
Wherein, receive unit 31 and carry the PWE3 message of SDH/SONET payload for reception,
Predeterminated position in described PWE3 message is packaged with section overhead.
Acquiring unit 32 obtains described section for the predeterminated position from described PWE3 message and opens
Pin.
The above two device that the embodiment of the present invention is provided, for the device of delivery section expense, passes through
Section overhead is encapsulated in the PWE3 message carrying SDH/SONET payload by encapsulation unit, and
It is sent to receiving terminal, it is not necessary to encapsulate extra message and carry out span line expense by transmitting element,
Achieve while span line expense, keep the constant of PWE3 message transmission frequency, improve
Compatibility to SDH/SONET network.For the device of receiver section expense, single by receiving
Unit receives and is packaged with section overhead and carries the PWE3 message of SDH/SONET payload, is obtaining
While taking unit acquisition section overhead, it is ensured that normally receiving and PWE3 of SDH/SONET payload
Message receives the constant of frequency.
Optionally, in one embodiment of the invention, the default position in above-mentioned PWE3 message
Put, can be the reserved field field of the CEP head of described PWE3 message.
Under normal circumstances, the form of CEP head is as shown in Figure 5.In one embodiment of the present of invention
In, with the reserved field field in multiplexing CEP head, SOH can be encapsulated into above-mentioned reserved field field
In, to realize the transmission of SOH in CEP.
Further alternative, above-mentioned reserved field field may include that section overhead instruction information and deposits
Storage space is put, and described section overhead instruction information is for indicating taking of section overhead in described PWE3 message
Band situation, described storage position is used for memory paragraph expense.Exemplary, a section overhead is general
Taking 8 bits, and described reserved field field has 20 bits, therefore, described reserved field field is extremely
A storage position can be included less, carry a section overhead；Or, it is also possible to include two
Storage position, carries two section overheads.In above-mentioned two situations, section overhead at most takies 16 ratios
Spy, remaining bit can be used to indicate that described section overhead indicates information, and described section overhead refers to
Show that information can represent with 2 bits, it is also possible to represent with 4 bits, certainly,
If only taking up 8 bits for carrying section overhead, remaining 16 bits can all be used for described section and open
Pin instruction information.This can be arranged according to actual demand, and embodiments of the invention do not limit
Fixed.
Include being introduced as a example by two storage positions by reserved field field below.Such as Fig. 6 institute
Show, illustratively, two storage positions are called storage position one and storage position two.
Wherein, encapsulate to be transmitted when transmitting terminal successively in described storage position one and storage position two
Section overhead time, described section overhead instruction information could be arranged to the first instruction information (such as:
0001)。
When transmitting terminal encapsulates previous PWE3 successively in described storage position one and storage position two
During the section overhead that message is not transmitted, described section overhead instruction information could be arranged to the second finger
Show information (such as: 0010).In an embodiment of the present invention, PWE3 is passed through due to needs
Message transmits payload and the section overhead of SDH/SONET frame simultaneously, therefore, when in above-mentioned reserved field
When field carries section overhead, it may be necessary to 1 or multiple PWE3 message encapsulate one
The section overhead of SDH/SONET frame.Such as, there are 5 when the section overhead of a SDH/SONET frame
Time, need 3 PWE3 messages to encapsulate, accordingly, then the payload of SDH/SONET frame is divided
Become 3 parts, in above-mentioned 3 PWE3 messages, the payload of encapsulation 1/3 respectively.
Open when transmitting terminal does not encapsulate waiting for transmission section in described storage position one and storage position two
During pin, described section overhead instruction information could be arranged to the 3rd instruction information (such as: 0000).
For example, it is assumed that need to transmit 3 section overheads, identify with A, B, C respectively.Transmitting terminal
Encapsulating and send first PW3 message, wherein, section overhead instruction information is set to 0001, storage
Position one and storage position two encapsulation section expense A and section overhead B respectively, as shown in Figure 7；Then send out
Sending end encapsulates and sends second PW3 message, and wherein, section overhead instruction information is set to 0010,
Storage position one encapsulation section expense C, owing to section overhead waiting for transmission has passed, therefore, storage
Position two is set to 0, as shown in Figure 8.
Open when transmitting terminal does not encapsulate waiting for transmission section in described storage position one and storage position two
During pin, described section overhead instruction information could be arranged to the 3rd instruction information (such as: 0000),
As shown in Figure 9.
Accordingly, when described receiving terminal receives described PWE3 message, can be according to described
Section overhead instruction information, obtains described section overhead.
Such as, the described section overhead instruction information obtained when described receiving terminal is the first instruction information
Time (such as: 0001), described receiving terminal is from described storage position one and storage position two successively
Obtain described section overhead；
When the described section overhead instruction information that receiving terminal obtains is the second instruction information (such as:
0010), described receiving terminal obtains previous from described storage position one and storage position two successively
The section overhead that PWE3 message is not transmitted；
When the described section overhead instruction information that receiving terminal obtains is the 3rd instruction information (such as:
0000) content during, described receiving terminal does not obtain described storage position one and storage position two.
Certainly, embodiments of the invention only introduce some more representational examples, in difference
Scene in, can be according to actual demand, the section overhead defined in above-mentioned reserved field field refers to
Show information and the form of storage position.
The embodiment of the present invention is the reserved field span line expense of the CEP head by PWE3 message,
Improve the compatibility to SDH/SONET network, it is achieved keep while section overhead transmission
PWE3 message frequencies constant, and achieve a butt joint with the CEP of standard.
Optionally, the one that the embodiment of the present invention provides is sent out in SDH/SONET circuit simulation
Sending in the device of section overhead, as shown in Figure 10, this encapsulation unit 21 may include that
First package module 211, carries SDH/SONET payload for being encapsulated in by section overhead
The reserved field field of the CEP head in PWE3 message.
Optionally, one receiver section in SDH/SONET circuit simulation that the embodiment of the present invention provides
In the device of expense, as shown in figure 11, this acquiring unit 32 may include that
First acquisition module 321, for the reserved field of the CEP head from described PWE3 message
Field obtains described section overhead.
Two kinds of devices that the embodiment of the present invention provides are used in conjunction with each other, by PWE3 message
The reserved field field span line expense of CEP head, improves the compatibility to SDH/SONET network
Property, it is achieved keep the constant of PWE3 message frequencies, and and standard while section overhead transmission
CEP achieve a butt joint.
Optionally, in one embodiment of the invention, the default position in above-mentioned PWE3 message
Put, can be an extended field of described PWE3 message.
In one embodiment of the invention, can with the PWE3 message format of extension standards,
One extended field encapsulates SOH, to realize the transmission of SOH in CEP, sees Figure 12,
Wherein, SOH OverHead represents the extended field of encapsulation SOH.
Optionally, as shown in figure 13, the reserved field of the CEP head of described PWE3 message can be taken
Band is for indicating the information of the starting position of memory paragraph expense, such as, the starting position of section overhead
Pointer, for indicating the described extended field original position of encapsulation SOH.
Such as, when transmitting terminal stores described section overhead at described extended field, described start bit
Putting pointer is the first pointer (such as: span is 0x0000-0xFFFE).
When transmitting terminal does not stores described section overhead in described extended field, described starting position
Pointer is the second pointer (such as: 0xFFFF).
For example, it is assumed that need to transmit 4 section overheads, identify with A, B, C, D respectively.
Transmitting terminal encapsulates and sends a PWE3 message, and wherein, starting position pointer is 783, described
Encapsulation section expense A, B, C, D in extended field, as shown in figure 14.
When need not pass segment expense, transmitting terminal encapsulates and sends a PWE3 message, its
In, starting position pointer is 0xFFFF, as shown in figure 15.
Accordingly, when receiving terminal receives described PWE3 message, can be according to described beginning
Position indicator pointer, obtains described section overhead.
Such as, (the example when the described starting position pointer that described receiving terminal obtains is the first pointer
As: span is 0x0000-0xFFFE), described receiving terminal is from pointed by described first pointer
Position acquisition described in section overhead；
When the described starting position pointer that described receiving terminal obtains is the second pointer (such as:
0xFFFF), described receiving terminal does not obtain described section overhead.
The quantity of the section overhead of this method transmission is unrestricted.
Certainly, embodiments of the invention only introduce some more representational examples,
In different scenes, the beginning in above-mentioned reserved field field can be defined according to actual demand
Position indicator pointer and the form of extended field.
The embodiment of the present invention is the extended field span line expense by PWE3 message, improves
Compatibility to SDH/SONET network, it is achieved keep PWE3 report while section overhead transmission
Literary composition frequency constant, and achieve a butt joint with the CEP of standard.
Optionally, the one that the embodiment of the present invention provides is sent out in SDH/SONET circuit simulation
Sending in the device of section overhead, as shown in figure 16, this encapsulation unit 21 may include that
Second package module 212, carries SDH/SONET payload for being encapsulated in by section overhead
Extended field in PWE3 message.
Optionally, one receiver section in SDH/SONET circuit simulation that the embodiment of the present invention provides
In the device of expense, as shown in figure 17, this acquiring unit 32 may include that
Second acquisition module 322, obtains described for the extended field from described PWE3 message
Section overhead.
Two kinds of devices that the embodiment of the present invention provides are used in conjunction with each other, by PWE3 message
Extended field span line expense, improves the compatibility to SDH/SONET network, it is achieved section
Keep the constant of PWE3 message frequencies while overhead transmission, and realize with the CEP of standard
Docking.
One embodiment of the present of invention also provides for a kind of sending in SDH/SONET circuit simulation/
The transmission system of receiver section expense, as shown in figure 18, described system includes: transmitting terminal 41 He
Receiving terminal 42.
Wherein, transmitting terminal 41 carries SDH/SONET payload for being encapsulated in by section overhead
Predeterminated position in PWE3 message, and the described PWE3 message being packaged with section overhead is sent to
Receiving terminal.
Receiving terminal 42 carries the PWE3 message of SDH/SONET payload for receiving, and from institute
State the preset field in PWE3 message and obtain described section overhead.
Optionally, above-mentioned transmitting terminal 41 can be such as Fig. 3, or Figure 10, or Figure 16 institute
The device shown.
Optionally, above-mentioned receiving terminal 42 can be such as Fig. 4, or Figure 11, or Figure 17 institute
The device shown.
In a concrete example, when the device that above-mentioned transmitting terminal 41 is as shown in Figure 3,
Described receiving terminal 42 device as shown in Figure 4；In the example that another is concrete, when above-mentioned
When sending end 41 is device as shown in Figure 10, described receiving terminal 42 device as shown in figure 11；
In the example that another is concrete, when the device that above-mentioned transmitting terminal 41 is as shown in figure 16,
Described receiving terminal 42 device as shown in figure 17.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is also
Being not limited to this, any those familiar with the art is at the technology model that the invention discloses
In enclosing, change can be readily occurred in or replace, all should contain within protection scope of the present invention.
Therefore, protection scope of the present invention should described be as the criterion with scope of the claims.
Claims (17)
1. one kind sends in SDH/Synchronous Optical Network SDH/SONET circuit simulation
The method of section overhead, it is characterised in that including:
Section overhead in SDH/SONET frame is encapsulated in and carries SDH/SONET payload by transmitting terminal
Pseudo-wire end-to-end emulation PWE3 message in predeterminated position；
The described PWE3 message being packaged with section overhead is sent to receiving terminal by described transmitting terminal.
Method the most according to claim 1, it is characterised in that described predeterminated position is institute
State the reserved field field of the circuit simulation CEP head based on packet switch of PWE3 message.
Method the most according to claim 2, it is characterised in that described reserved field field bag
Including: section overhead instruction information and storage position, wherein, described section overhead instruction information is used for referring to
Showing the Carriage of section overhead in described PWE3 message, described storage position is for storage at least
One section overhead.
Method the most according to claim 1, it is characterised in that described predeterminated position is institute
State the extended field of PWE3 message.
Method the most according to claim 4, it is characterised in that described PWE3 message
The reserved field of CEP head carries the information for indicating the starting position storing described section overhead.
6. one kind receives in SDH/Synchronous Optical Network SDH/SONET circuit simulation
The method of section overhead, it is characterised in that including:
Receiving terminal receives the pseudo-wire end-to-end emulation PWE3 message carrying SDH/SONET payload,
Predeterminated position in described PWE3 message is packaged with the section overhead in SDH/SONET frame；
Described receiving terminal predeterminated position from described PWE3 message obtains described section overhead.
Method the most according to claim 6, it is characterised in that described predeterminated position is institute
State the reserved field field of the circuit simulation CEP head based on packet switch of PWE3 message.
Method the most according to claim 7, it is characterised in that described reserved field field bag
Including: section overhead instruction information and storage position, wherein, described section overhead instruction information is used for referring to
Showing the Carriage of section overhead in described PWE3 message, described storage position is for storage at least
One section overhead.
Method the most according to claim 6, it is characterised in that described predeterminated position is institute
State the extended field of PWE3 message.
Method the most according to claim 9, it is characterised in that described PWE3 message
The reserved field of CEP head carry the information for indicating the starting position storing described section overhead.
Send out in SDH/Synchronous Optical Network SDH/SONET circuit simulation for 11. 1 kinds
Send the device of section overhead, it is characterised in that including:
Encapsulation unit, carries for being encapsulated in by the section overhead in SDH/SONET frame
Predeterminated position in the pseudo-wire end-to-end emulation PWE3 message of SDH/SONET payload；
Transmitting element, for being sent to receiving terminal by the described PWE3 message being packaged with section overhead.
12. devices according to claim 11, it is characterised in that
Described encapsulation unit includes:
First package module, carries SDH/SONET payload for being encapsulated in by section overhead
The reserved field field of the circuit simulation CEP head based on packet switch in PWE3 message.
13. devices according to claim 11, it is characterised in that described encapsulation unit bag
Include:
Second package module, carries SDH/SONET payload for being encapsulated in by section overhead
Extended field in PWE3 message.
14. 1 kinds connect in SDH/Synchronous Optical Network SDH/SONET circuit simulation
Receive the device of section overhead, it is characterised in that including:
Receive unit, for receiving the end-to-end emulation of pseudo-wire carrying SDH/SONET payload
PWE3 message, the predeterminated position in described PWE3 message is packaged with in SDH/SONET frame
Section overhead；
Acquiring unit, obtains described section overhead for the predeterminated position from described PWE3 message.
15. devices according to claim 14, it is characterised in that
Described acquiring unit includes:
First acquisition module, imitates for the circuit based on packet switch from described PWE3 message
The reserved field field of true CEP head obtains described section overhead.
16. devices according to claim 14, it is characterised in that
Described acquiring unit includes:
Second acquisition module, obtains described section for the extended field from described PWE3 message
Expense.
Send out in SDH/Synchronous Optical Network SDH/SONET circuit simulation for 17. 1 kinds
Send/transmission the system of receiver section expense, including transmitting terminal and receiving terminal, it is characterised in that described
Transmitting terminal be as according to any one of claim 11-13 in SDH/SONET circuit simulation
The device of delivery section expense, described receiving terminal be as according to any one of claim 14-16
The device of receiver section expense in SDH/SONET circuit simulation.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110400423.9A CN102497311B (en) | 2011-12-06 | 2011-12-06 | The method of transmission/receiver section expense, device and transmission system in SDH/SONET circuit simulation |
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|---|---|---|---|
| CN201110400423.9A CN102497311B (en) | 2011-12-06 | 2011-12-06 | The method of transmission/receiver section expense, device and transmission system in SDH/SONET circuit simulation |
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| CN105933087B (en) | 2016-04-18 | 2018-07-31 | 华为技术有限公司 | Method, relevant device and the system of data processing in a kind of Ethernet |
| 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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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101001476A (en) * | 2007-01-26 | 2007-07-18 | 华为技术有限公司 | Service scheduling system and method |
| CN101039156A (en) * | 2006-03-17 | 2007-09-19 | 华为技术有限公司 | Method and apparatus for transmitting SDH data |
| CN101707553A (en) * | 2009-11-10 | 2010-05-12 | 华为技术有限公司 | Method, device and system for transmitting synchronous service data |
| JP2011040992A (en) * | 2009-08-11 | 2011-02-24 | Fujitsu Telecom Networks Ltd | Sdh/sonet-packet conversion transmitter |
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| CN101931524A (en) * | 2009-06-25 | 2010-12-29 | 中兴通讯股份有限公司 | Clock source selecting method of synchronous digital hierarchy network |
| CN101800750B (en) * | 2010-03-03 | 2012-04-18 | 华为技术有限公司 | Method, device and system for data transmission |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101039156A (en) * | 2006-03-17 | 2007-09-19 | 华为技术有限公司 | Method and apparatus for transmitting SDH data |
| CN101001476A (en) * | 2007-01-26 | 2007-07-18 | 华为技术有限公司 | Service scheduling system and method |
| JP2011040992A (en) * | 2009-08-11 | 2011-02-24 | Fujitsu Telecom Networks Ltd | Sdh/sonet-packet conversion transmitter |
| CN101707553A (en) * | 2009-11-10 | 2010-05-12 | 华为技术有限公司 | Method, device and system for transmitting synchronous service data |
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