CN102497311A - Method, device and transmission system for transmitting/receiving section overhead in synchronous digital hierarchy/synchronous optical network (SDH/SONET) circuit emulation - Google Patents
Method, device and transmission system for transmitting/receiving section overhead in synchronous digital hierarchy/synchronous optical network (SDH/SONET) circuit emulation Download PDFInfo
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- CN102497311A CN102497311A CN2011104004239A CN201110400423A CN102497311A CN 102497311 A CN102497311 A CN 102497311A CN 2011104004239 A CN2011104004239 A CN 2011104004239A CN 201110400423 A CN201110400423 A CN 201110400423A CN 102497311 A CN102497311 A CN 102497311A
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Abstract
The invention discloses a method, a device and a transmission system for transmitting/receiving section overhead in synchronous digital hierarchy/synchronous optical network (SDH/SONET) circuit emulation, and relates to the technical field of communication. The method comprises the following steps that: a transmitter packages the section overhead at a preset position in a pseudowire emulation edge-to-edge (PWE3) message carrying an SDH/SONET payload; the transmitter transmits the PWE3 message packaged with the section overhead to a receiver; the receiver receives the PWE3 message carrying the SDH/SONET payload, wherein the section overhead is packaged at the preset position in the PWE3 message; and the receiver acquires the section overhead from the preset position in the PWE3 message. The embodiment of the invention is mainly applied to the process of transmitting the section overhead in the SDH/SONET circuit emulation.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of in the SDH/SONET circuit simulation method, device and the transmission system of transmission/receiver section expense.
Background technology
Along with development of Communication Technique; (English full name is the end-to-end emulation of pseudo-line: Pseudowire Emulation Edge-to-Edge; Be designated hereinafter simply as: PWE3) technology is widely used in that (English full name is: Internet Protocol/Multiprotocol Label Switching in Internet protocol/multiprotocol label switching; Be designated hereinafter simply as: IP/MPLS) in the network emulation time division multiplexing (English full name is: Time Division Multiplexing is designated hereinafter simply as: TDM) signal.
(English full name is: Synchronous Digital Hierarchy/Synchronous Optical Network to SDH/Synchronous Optical Network; Be designated hereinafter simply as: SDH/SONET) standard of emulation mainly is to request for comments that (English full name is: Request For Comments is designated hereinafter simply as: RFC) 4842.Its main thought is after the equipment that emulation begins is packaged as the PWE3 message with the SDH/SONET frame by certain-length, to be delivered to the IP/MPLS network; In the IP/MPLS network, transmit the PWE3 message by bag; Equipment in that emulation finishes is removed the encapsulation of PWE3 message, restores the SDH/SONET frame.Concrete, the PWE3 message encapsulation format of RFC4842 definition can be as shown in Figure 1.Wherein, PSN and Multiplexing Layer Headers representes that (English full name is: Packet Switching Network for packet network and multiplex layer head; Be designated hereinafter simply as PSN); CEP header representes circuit simulation (English full name is: Circuit Emulation over Packet the is designated hereinafter simply as CEP) head based on packet switch, and SDH/SONET Fragment representes the section of the payload (payload) of SDH/SONET frame.
Generally, the content of SDH/SONET frame mainly is divided into section overhead (English full name is: Section Overhead is designated hereinafter simply as SOH) and payload two large divisions, and SOH mainly is some management, maintenance information, and payload then mainly is a user data.But, as can beappreciated from fig. 1, in the simulation standard of RFC4842 regulation, only defined SDH/SONET payload, and do not defined SOH.Therefore, in CEP, can't realize the transmission of SOH.
In order in CEP, to transmit SOH, SOH is packaged into a specific overhead message separately in the prior art, transmits with the PWE3 message that carries SDH/SONET payload.
Yet; Since the transmission frequency of SDH/SONET frame be fix (for example: per second 8000 frames); The PWE3 message frequency that forms after the emulation also should be fixed; For example suppose 1/3 SDH/SONET frame of encapsulation in every PWE3 message, the transmission frequency of then said PWE3 message should fixedly be 24000 frame per seconds, could guarantee a SDH/SONET frame transmission is finished.For the recipient, can realize through the frequency that receives the PWE3 message SDH/SONET frame is carried out complete reception originally, still behind independent package specific expense message, can destroy this fixing frequency relation, cause the professional instability that occurs.
Summary of the invention
The present invention provide a kind of in the SDH/SONET circuit simulation method, device and the transmission system of transmission/receiver section expense; Transmission SOH in CEP emulation; Lifting is to the compatibility of SDH/SONET network; Keep the constant of PWE3 message frequency when realizing the SOH transmission, and achieve a butt joint with the CEP of standard.
On the one hand, the present invention provide a kind of in the SDH/SONET circuit simulation method of delivery section expense, comprising:
Transmitting terminal is encapsulated in section overhead the predeterminated position in the PWE3 message that carries the SDH/SONET payload;
Said transmitting terminal sends to receiving terminal with the said PWE3 message that is packaged with section overhead.
On the other hand, the present invention provide a kind of in the SDH/SONET circuit simulation method of receiver section expense, comprising:
Receiving terminal receives the PWE3 message that carries the SDH/SONET payload, and the predeterminated position in the said PWE3 message is packaged with section overhead;
The predeterminated position of said receiving terminal from said PWE3 message obtains said section overhead.
On the other hand, the present invention provide a kind of in the SDH/SONET circuit simulation device of delivery section expense, comprising:
Encapsulation unit is used for section overhead is encapsulated in the predeterminated position of the PWE3 message that carries the SDH/SONET payload;
Transmitting element is used for the said PWE3 message that is packaged with section overhead is sent to receiving terminal.
On the other hand, the present invention provide a kind of in the SDH/SONET circuit simulation device of receiver section expense, comprising:
Receiving element is used to receive the PWE3 message that carries the SDH/SONET payload, and the predeterminated position in the said PWE3 message is packaged with section overhead;
Acquiring unit is used for obtaining said section overhead from the predeterminated position of said PWE3 message.
On the other hand, the present invention provide a kind of in the SDH/SONET circuit simulation transmission system of transmission/receiver section expense, comprising:
Transmitting terminal is used for section overhead is encapsulated in the predeterminated position of the PWE3 message that carries the SDH/SONET payload, and the said PWE3 message that is packaged with section overhead is sent to receiving terminal;
Receiving terminal is used to receive the PWE3 message that carries the SDH/SONET payload, and the predeterminated position from said PWE3 message obtains said section overhead.
The embodiment of the invention provides a kind of in the SDH/SONET circuit simulation method, device and the transmission system of transmission/receiver section expense; Transmitting terminal is through being encapsulated in section overhead the predeterminated position in the PWE3 message; And the said PWE3 message that is packaged with section overhead sent to receiving terminal; Receiving terminal receives section overhead is encapsulated in the PWE3 message that carries the SDH/SONET payload, and the predeterminated position from said PWE3 message obtains said section overhead.
Because span line expense when carrying the PWE3 message of SDH/SONET payload; Compare with independent encapsulation section expense in the prior art; Promoted compatibility, kept the constant of PWE3 message frequency when realizing the section overhead transmission, and achieved a butt joint with the CEP of standard to the SDH/SONET network.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the PWE3 message encapsulation format of RFC4842 definition in the prior art;
Fig. 2 a be in the embodiment of the invention a kind of in the SDH/SONET circuit simulation flow chart of the method for delivery section expense;
Fig. 2 b be in the embodiment of the invention a kind of in the SDH/SONET circuit simulation flow chart of the method for receiver section expense;
Fig. 3 be in the embodiment of the invention a kind of in the SDH/SONET circuit simulation structure chart of delivery section expense device;
Fig. 4 be in the embodiment of the invention a kind of in the SDH/SONET circuit simulation structure chart of receiver section expense device;
Fig. 5 is the form of CEP head in the embodiment of the invention;
Fig. 6 is the form of the CEP head of a kind of PWE3 message in the embodiment of the invention;
Fig. 7 carries A and two section overhead exemplary plot of B for the CEP head of a kind of PWE3 message in the embodiment of the invention;
Fig. 8 is the exemplary plot that the CEP head of a kind of PWE3 message in the embodiment of the invention carries section overhead C;
Fig. 9 is the exemplary plot that the CEP head of a kind of PWE3 message in the embodiment of the invention does not carry section overhead;
Figure 10 be in the embodiment of the invention a kind of in the SDH/SONET circuit simulation structure chart of delivery section expense device;
Figure 11 be in the embodiment of the invention a kind of in the SDH/SONET circuit simulation structure chart of receiver section expense device;
Figure 12 is a kind of sketch map that contains the PWE3 message format of extended field in the embodiment of the invention;
Figure 13 is the form sketch map that adopts the CEP head of PWE3 message in the embodiment of the invention;
The exemplary plot that Figure 14 carries four section overhead A, B, C, D for PWE3 message in the embodiment of the invention;
The exemplary plot that Figure 15 does not carry section overhead for PWE3 message in the embodiment of the invention;
Figure 16 be in the embodiment of the invention a kind of in the SDH/SONET circuit simulation structure chart of delivery section expense device;
Figure 17 be in the embodiment of the invention a kind of in the SDH/SONET circuit simulation structure chart of receiver section expense device;
Figure 18 be in the embodiment of the invention a kind of in the SDH/SONET circuit simulation structure chart of the transmission system of transmission/receiver section expense.
Embodiment
Below in conjunction with accompanying drawing to the embodiment of the invention a kind of in the SDH/SONET circuit simulation method, device and the transmission system of transmission/receiver section expense be described in detail.
One embodiment of the present of invention provide a kind of in the SDH/SONET circuit simulation method of delivery section expense, shown in Fig. 2 a, this method comprises:
101, transmitting terminal is encapsulated in section overhead the predeterminated position in the PWE3 message that carries the SDH/SONET payload;
102, said transmitting terminal sends to receiving terminal with the said PWE3 message that is packaged with section overhead.
An alternative embodiment of the invention also provide a kind of in the SDH/SONET circuit simulation method of receiver section expense, shown in Fig. 2 b, this method comprises:
103, receiving terminal receives the PWE3 message that carries the SDH/SONET payload, and the predeterminated position in the said PWE3 message is packaged with section overhead;
104, the predeterminated position of said receiving terminal from said PWE3 message obtains said section overhead.
The embodiment of the invention provides above-mentioned in the SDH/SONET circuit simulation method of transmission/receiver section expense; For transmitting terminal; Carry the PWE3 message transmissions section overhead of SDH/SONET payload through utilization; Need not encapsulate extra message and come the span line expense, realize in the span line expense, keeping the PWE3 message to send the constant of frequency, promote compatibility the SDH/SONET network.For receiving terminal, be packaged with section overhead and carry the PWE3 message of SDH/SONET payload through reception, when obtaining section overhead, guarantee normal reception and PWE3 message receive frequency constant of SDH/SONET payload.
One embodiment of the present of invention also provide a kind of in the SDH/SONET circuit simulation device of delivery section expense, as shown in Figure 3, said device comprises: encapsulation unit 21 and transmitting element 22.
Wherein, encapsulation unit 21 is used for section overhead is encapsulated in the predeterminated position of the PWE3 message that carries the SDH/SONET payload.
Transmitting element 22 is used for the said PWE3 message that is packaged with section overhead is sent to receiving terminal.
Said dispensing device has been realized section overhead is encapsulated in the predeterminated position in the PWE3 message that carries the SDH/SONET payload, and sends to receiving terminal.
Another embodiment of the present invention also provide a kind of in the SDH/SONET circuit simulation device of receiver section expense, as shown in Figure 4, said device comprises: receiving element 31 and acquiring unit 32.
Wherein, receiving element 31 is used to receive the PWE3 message that carries the SDH/SONET payload, and the predeterminated position in the said PWE3 message is packaged with section overhead.
Above-mentioned two kinds of devices that the embodiment of the invention provided; Device for the delivery section expense; Through encapsulation unit section overhead is encapsulated in the PWE3 message that carries the SDH/SONET payload, and sends to receiving terminal, need not encapsulate extra message and come the span line expense through transmitting element; Realized in the span line expense, keeping the PWE3 message to send the constant of frequency, promoted compatibility the SDH/SONET network.Device for the receiver section expense; Receive the PWE3 message that is packaged with section overhead and carries the SDH/SONET payload through receiving element; When acquiring unit obtains section overhead, guarantee normal reception and PWE3 message receive frequency constant of SDH/SONET payload.
Optional, in one embodiment of the invention, the predeterminated position in the above-mentioned PWE3 message can be the reservation territory field of the CEP head of said PWE3 message.
Generally, the form of CEP head is as shown in Figure 5.In one embodiment of the invention, the reservation territory field in can multiplexing CEP head is encapsulated into SOH in the field of above-mentioned reservation territory, to realize the transmission of SOH among the CEP.
Further optional, above-mentioned reservation territory field can comprise: section overhead indication information and memory location, and said section overhead indication information is used for indicating the situation of carrying of said PWE3 message section overhead, and said memory location is used for the memory paragraph expense.Exemplary, a section overhead generally takies 8 bits, and said reservation territory field has 20 bits, and therefore, said reservation territory field can comprise a memory location at least, carries a section overhead; Perhaps, also can comprise two memory locations, carry two section overheads.In above-mentioned two kinds of situation; Section overhead takies 16 bits at most, and remaining bit can be used to represent said section overhead indication information, and said section overhead indication information can be represented with 2 bits; Also can represent with 4 bits; Certainly, if only taking 8 bits is used to carry section overhead, remaining 16 bits can all be used for said section overhead indication information.This can be provided with according to the demand of reality, and embodiments of the invention are not done qualification.
Comprise that to keep in the field of territory two memory locations are that example is introduced below.As shown in Figure 6, for ease of introducing, two memory locations are called memory location one and memory location two respectively.
Wherein, when transmitting terminal encapsulated section overhead waiting for transmission in said memory location one with memory location two successively, said section overhead indication information (for example: 0001) can be set to first indication information.
When transmitting terminal in said memory location one when encapsulating the section overhead that previous PWE3 message transmits successively with memory location two, said section overhead indication information (for example: 0010) can be set to second indication information.In an embodiment of the present invention; Owing to need transmit the payload and the section overhead of SDH/SONET frame simultaneously through the PWE3 message; Therefore, when in the field of above-mentioned reservation territory, carrying section overhead, possibly need 1 or a plurality of PWE3 messages to encapsulate the section overhead of a SDH/SONET frame.For example, when the section overhead of a SDH/SONET frame has 5, need 3 PWE3 messages to encapsulate, corresponding, then the payload with the SDH/SONET frame is divided into 3 parts, in above-mentioned 3 PWE3 messages, encapsulates 1/3 payload respectively.
When transmitting terminal did not encapsulate section overhead waiting for transmission in said memory location one and memory location two, said section overhead indication information (for example: 0000) can be set to the 3rd indication information.
For example, supposing needs to transmit 3 section overheads, identifies with A, B, C respectively.The transmitting terminal encapsulation is also sent first PW3 message, and wherein, the section overhead indication information is set to 0001, and memory location one and memory location two difference encapsulation section expense A and section overhead B are as shown in Figure 7; Transmitting terminal encapsulates and sends second PW3 message then, and wherein, the section overhead indication information is set to 0010, memory location one encapsulation section expense C, because section overhead waiting for transmission has passed, therefore, memory location two is set to 0, and is as shown in Figure 8.
When transmitting terminal did not encapsulate section overhead waiting for transmission in said memory location one and memory location two, said section overhead indication information (for example: 0000), as shown in Figure 9 can be set to the 3rd indication information.
Accordingly, when said receiving terminal receives said PWE3 message, can obtain said section overhead according to said section overhead indication information.
(for example: 0001), said receiving terminal obtained said section overhead from said memory location one with memory location two successively when the said section overhead indication information that for example, obtains when said receiving terminal was first indication information;
(for example: 0010), said receiving terminal obtained the section overhead that previous PWE3 message transmits from said memory location one with memory location two successively when the said section overhead indication information that obtains when receiving terminal was second indication information;
(for example: 0000), said receiving terminal did not obtain the content in said memory location one and the memory location two when the said section overhead indication information that obtains when receiving terminal was the 3rd indication information.Certainly, embodiments of the invention only are to introduce some more representational examples, in different scene, can be according to the demand of reality, and define section overhead indication information and the form of memory location in the field of above-mentioned reservation territory.
The embodiment of the invention is the reservation territory span line expense through the CEP head of PWE3 message, has promoted the compatibility to the SDH/SONET network, keeps the constant of PWE3 message frequency when realizing the section overhead transmission, and achieves a butt joint with the CEP of standard.
Optional, it is a kind of in the SDH/SONET circuit simulation in the device of delivery section expense that the embodiment of the invention provides, and shown in figure 10, this encapsulation unit 21 can comprise:
First package module 211 is used for section overhead is encapsulated in the reservation territory field of the CEP head of the PWE3 message that carries the SDH/SONET payload.
Optional, it is a kind of in the SDH/SONET circuit simulation in the device of receiver section expense that the embodiment of the invention provides, and shown in figure 11, this acquiring unit 32 can comprise:
First acquisition module 321 is used for obtaining said section overhead from the reservation territory field of the CEP head of said PWE3 message.
Two kinds of devices that the embodiment of the invention provides use that cooperatively interacts; The reservation territory field span line expense of the CEP head through the PWE3 message; Promoted compatibility to the SDH/SONET network; Keep the constant of PWE3 message frequency when realizing the section overhead transmission, and achieve a butt joint with the CEP of standard.
Optional, in one embodiment of the invention, the predeterminated position in the above-mentioned PWE3 message can be an extended field of said PWE3 message.
In one embodiment of the invention, PWE3 message format that can extension standards encapsulates SOH in an extended field, and to realize the transmission of SOH among the CEP, referring to Figure 12, wherein, SOH OverHead representes to encapsulate the extended field of SOH.
Optional, shown in figure 13, the information of the starting position that is used to indicate the memory paragraph expense can be carried in the reservation territory of the CEP head of said PWE3 message, for example, and the starting position pointer of section overhead, the said extended field original position that is used to indicate encapsulation SOH.
For example, when transmitting terminal when said extended field is stored said section overhead, said starting position pointer is first pointer (for example: span is 0x0000-0xFFFE).
When transmitting terminal is not stored said section overhead in said extended field, said starting position pointer be second pointer (for example: 0xFFFF).
For example, supposing needs to transmit 4 section overheads, identifies with A, B, C, D respectively.The transmitting terminal encapsulation is also sent a PWE3 message, and wherein, the starting position pointer is 783, and encapsulation section expense A, B, C, D are shown in figure 14 in the said extended field.
When not needing the pass segment expense, the transmitting terminal encapsulation is also sent a PWE3 message, and wherein, the starting position pointer is 0xFFFF, and is shown in figure 15.
Accordingly, when receiving terminal receives said PWE3 message, can obtain said section overhead according to said starting position pointer.
For example, when said starting position pointer that said receiving terminal obtains is first pointer (for example: span is 0x0000-0xFFFE), said receiving terminal obtains said section overhead from said first pointer position pointed;
(for example: 0xFFFF), said receiving terminal does not obtain said section overhead when said starting position pointer that said receiving terminal obtains is second pointer.
The quantity of the section overhead of this method transmission is unrestricted.
Certainly, embodiments of the invention only are to introduce some more representational examples, in different scene, can be according to the demand of reality, and define starting position pointer and the form of extended field in the field of above-mentioned reservation territory.
The embodiment of the invention is the extended field span line expense through the PWE3 message, has promoted the compatibility to the SDH/SONET network, keeps the constant of PWE3 message frequency when realizing the section overhead transmission, and achieves a butt joint with the CEP of standard.
Optional, it is a kind of in the SDH/SONET circuit simulation in the device of delivery section expense that the embodiment of the invention provides, and shown in figure 16, this encapsulation unit 21 can comprise:
Second package module 212 is used for section overhead is encapsulated in the extended field of the PWE3 message that carries the SDH/SONET payload.
Optional, it is a kind of in the SDH/SONET circuit simulation in the device of receiver section expense that the embodiment of the invention provides, and shown in figure 17, this acquiring unit 32 can comprise:
Two kinds of devices that the embodiment of the invention provides use that cooperatively interacts; Extended field span line expense through the PWE3 message; Promoted compatibility, kept the constant of PWE3 message frequency when realizing the section overhead transmission, and achieved a butt joint with the CEP of standard to the SDH/SONET network.
One embodiment of the present of invention also provide a kind of in the SDH/SONET circuit simulation transmission system of transmission/receiver section expense, shown in figure 18, said system comprises: transmitting terminal 41 and receiving terminal 42.
Wherein, transmitting terminal 41 is used for section overhead is encapsulated in the predeterminated position of the PWE3 message that carries the SDH/SONET payload, and the said PWE3 message that is packaged with section overhead is sent to receiving terminal.
Receiving terminal 42 is used to receive the PWE3 message that carries the SDH/SONET payload, and the preset field from said PWE3 message is obtained said section overhead.
Optional, above-mentioned transmitting terminal 41 can be like Fig. 3, perhaps Figure 10, device perhaps shown in Figure 16.
Optional, above-mentioned receiving terminal 42 can be like Fig. 4, perhaps Figure 11, device perhaps shown in Figure 17.
In a concrete example, when above-mentioned transmitting terminal 41 is device as shown in Figure 3, the device that said receiving terminal 42 is as shown in Figure 4; In another concrete example, when above-mentioned transmitting terminal 41 is device shown in figure 10, the device that said receiving terminal 42 is shown in figure 11; In another concrete example, when above-mentioned transmitting terminal 41 is device shown in figure 16, the device that said receiving terminal 42 is shown in figure 17.
The above; Be merely embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technical staff who is familiar with the present technique field is in the technical scope that the present invention discloses; Can expect easily changing or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by said protection range with claim.
Claims (17)
1. the method for a delivery section expense in SDH/Synchronous Optical Network SDH/SONET circuit simulation is characterized in that, comprising:
Transmitting terminal is encapsulated in section overhead the predeterminated position in the end-to-end emulation PWE3 of the pseudo-line message that carries the SDH/SONET payload;
Said transmitting terminal sends to receiving terminal with the said PWE3 message that is packaged with section overhead.
2. method according to claim 1 is characterized in that, said predeterminated position is the reservation territory field based on the circuit simulation CEP head of packet switch of said PWE3 message.
3. method according to claim 2; It is characterized in that; Said reservation territory field comprises: section overhead indication information and memory location; Wherein, said section overhead indication information is used for indicating the situation of carrying of said PWE3 message section overhead, and said memory location is used to store at least one section overhead.
4. method according to claim 1 is characterized in that, said predeterminated position is the extended field of said PWE3 message.
5. method according to claim 4 is characterized in that, the information that is used to indicate the starting position of storing said section overhead is carried in the reservation territory of the CEP head of said PWE3 message.
6. the method for a receiver section expense in SDH/Synchronous Optical Network SDH/SONET circuit simulation is characterized in that, comprising:
Receiving terminal receives the end-to-end emulation PWE3 of the pseudo-line message that carries the SDH/SONET payload, and the predeterminated position in the said PWE3 message is packaged with section overhead;
The predeterminated position of said receiving terminal from said PWE3 message obtains said section overhead.
7. method according to claim 6 is characterized in that, said predeterminated position is the reservation territory field based on the circuit simulation CEP head of packet switch of said PWE3 message.
8. method according to claim 7; It is characterized in that; Said reservation territory field comprises: section overhead indication information and memory location; Wherein, said section overhead indication information is used for indicating the situation of carrying of said PWE3 message section overhead, and said memory location is used to store at least one section overhead.
9. method according to claim 6 is characterized in that, said predeterminated position is the extended field of said PWE3 message.
10. method according to claim 9 is characterized in that, the information that is used to indicate the starting position of storing said section overhead is carried in the reservation territory of the CEP head of said PWE3 message.
11. the device of a delivery section expense in SDH/Synchronous Optical Network SDH/SONET circuit simulation is characterized in that, comprising:
Encapsulation unit is used for section overhead is encapsulated in the predeterminated position of the end-to-end emulation PWE3 of the pseudo-line message that carries the SDH/SONET payload;
Transmitting element is used for the said PWE3 message that is packaged with section overhead is sent to receiving terminal.
12. device according to claim 11 is characterized in that,
Said encapsulation unit comprises:
First package module is used for section overhead is encapsulated in the reservation territory field based on the circuit simulation CEP head of packet switch of the PWE3 message that carries the SDH/SONET payload.
13. device according to claim 11 is characterized in that, said encapsulation unit comprises:
Second package module is used for section overhead is encapsulated in the extended field of the PWE3 message that carries the SDH/SONET payload.
14. the device of a receiver section expense in SDH/Synchronous Optical Network SDH/SONET circuit simulation is characterized in that, comprising:
Receiving element is used to receive the end-to-end emulation PWE3 of the pseudo-line message that carries the SDH/SONET payload, and the predeterminated position in the said PWE3 message is packaged with section overhead;
Acquiring unit is used for obtaining said section overhead from the predeterminated position of said PWE3 message.
15. device according to claim 14 is characterized in that,
Said acquiring unit comprises:
First acquisition module is used for obtaining said section overhead from the reservation territory field based on the circuit simulation CEP head of packet switch of said PWE3 message.
16. device according to claim 14 is characterized in that,
Said acquiring unit comprises:
Second acquisition module is used for obtaining said section overhead from the extended field of said PWE3 message.
17. the transmission system of a transmission/receiver section expense in SDH/Synchronous Optical Network SDH/SONET circuit simulation; Comprise transmitting terminal and receiving terminal; It is characterized in that; Said transmitting terminal be as among the claim 11-13 each described in the SDH/SONET circuit simulation device of delivery section expense, said receiving terminal be as among the claim 14-16 each described in the SDH/SONET circuit simulation device of receiver section expense.
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| US10931578B2 (en) | 2016-04-18 | 2021-02-23 | Huawei Technologies Co., Ltd. | Method for processing data in ethernet, device, and system |
| 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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| CN101001476A (en) * | 2007-01-26 | 2007-07-18 | 华为技术有限公司 | Service scheduling system and method |
| 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 |
| 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 |
| CN101800750A (en) * | 2010-03-03 | 2010-08-11 | 华为技术有限公司 | Method, device and system for data transmission |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10931578B2 (en) | 2016-04-18 | 2021-02-23 | Huawei Technologies Co., Ltd. | Method for processing data in ethernet, device, and system |
| 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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| CN102497311B (en) | 2016-08-31 |
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