CN102388582A - Transmission method for adding idle bit, transmitter and network system - Google Patents
Transmission method for adding idle bit, transmitter and network system Download PDFInfo
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- 238000009432 framing Methods 0.000 claims description 3
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- H04L69/322—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions
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Abstract
The invention provides a transmission method for adding idle bit, a transmitter and a network system, which are applicable to end-to-end pseudowire simulation service.The method includes the steps of the transmitter obtaining TDM data frames having a same time source; the transmitter obtaining a first bit value for adding idle bit from the frame head of a first TDM data frame of the TDM data frames having a same time source; the transmitter carrying out structure encapsulation of the TDM data frames having a same time source and generating a structural data packet for transmitting on a packet - switched network; the transmitter allocating the first bit value for adding idle bit to the pseudowire control section at the head of the structural data packet ; and the transmitter sending a structural data packet with a first bit value for adding idle bit to a receiver through the packet - switched network. The invention also discloses a transmitter and a network system. The solution of the invention can effectively slove the problem of adding idle bit in end-to-end pseudowire simulation service.
Description
Technical field
The embodiment of the invention relates to communication technical field, relates in particular to a kind of transmission method, transmitter and network system of additional spare bits.
Background technology
Pseudo Wire Emulation Edge-to-Edge (Pseudo-Wire Emulation; Hereinafter to be referred as: PWE3) technology is by the Internet engineering duty group (Internet Engineering Task; Hereinafter to be referred as: IETF) one type of business function of definition; This type of business function can be at packet switching network (Packet Switch Network; Hereinafter to be referred as: PSN) go up mode with circuit characteristic emulation provide frame relay, asynchronous transfer mode (Asynchronous Transfer Mode, hereinafter to be referred as: ATM), business such as Ethernet.
Traditional telecom operators are typical time division multiplexing (Time Division Multiplexing for E1 and the T1 special line leased service that the user provides; Hereinafter to be referred as: TDM) private line service; Synchronous optical network (the Synchronous Optical Network of operator through laying; Hereinafter to be referred as: SONET)/SDH (Synchronous Digital Hierarchy; Hereinafter to be referred as synchronous network such as SDH), perhaps the asynchronous data system (Plesiochronous Digital Hierarchy, hereinafter to be referred as: PDH) etc. asynchronous network is carried the TDM private line service data from each different user; Along with the development of IP technology, operator is progressively through PWE3 technology TDM operation transmission on Metro Ethernet.E1 wherein and T1 are the electrical interface speed of International Telecommunications Union's regulation, and wherein E1 is the primary rate of European standard, and T1 is the primary rate of North America and Nippon Standard.
Be to transmit tdm data on PSN through the mode of setting up the pseudo-line of TDM in the inside of PSN tunnel; Make different TDM users realize intercommunication each other; In the traditional TDM business, frame head is an overhead field, is used for synchronously, verification and remote alarm etc.; Also comprise additional spare bits (Additional Spare bit in addition in the frame head; Be called for short: the Sa bit), additional spare bits comprises 5 bit: Sa4, Sa5, Sa6, Sa7 and Sa8, and International Telecommunications Union (ITUT) advises that the function of this additional spare bits comprises:
(1) additional spare bits can be used for transmitting High level data link control (High level Data Link Control; Hereinafter to be referred as: HDLC) or the control protocol of data link layer (Link Access Procedure D-channel is hereinafter to be referred as LAPD) data;
(2) a bit Sa4 of additional spare bits can be used for network management;
(3) the arbitrary bit in the additional spare bits can be used for sending and receiving Synchronization Status Message;
(4) when shall not be applied to specific point-to-point and use, Sa5 can use in country to the Sa7 bit;
Therefore, professional for TDM, the transparent transmission of additional spare bits wherein is extremely important, yet in the prior art, when carrying out the transfer of data of structuring encapsulation, can't effectively solve the transparent transmission problem of additional spare bits.
Summary of the invention
The embodiment of the invention provides a kind of transmission method, transmitter and network system of additional spare bits, and it can be applied in the Pseudo Wire Emulation Edge-to-Edge business, can effectively solve the transparent transmission problem of any bit of additional spare bits in the Pseudo Wire Emulation Edge-to-Edge business.
The embodiment of the invention provides a kind of transmission method of additional spare bits, comprising:
Transmitter obtains the identical time multiplexing date frame in a plurality of clocks source;
Obtain first bit value of additional spare bits in the frame head of the first time multiplexing date frame of transmitter from the identical time multiplexing date frame in said a plurality of clocks source;
Said transmitter carries out structuring encapsulation to the identical time multiplexing date frame in said a plurality of clocks source, generates to be used for the structural data bag that transmits at packet switching network;
First bit value of the said additional spare bits of configuration in the pseudo-line traffic control field of said transmitter in the packet header of said structural data bag;
Said transmitter sends the structural data bag of first bit value that carries said additional spare bits to receiver through packet switching network.
The embodiment of the invention also provides a kind of transmitter, comprising:
First acquiring unit is used to obtain the identical time multiplexing date frame in a plurality of clocks source;
Second acquisition unit is used for from the frame head of the first time multiplexing date frame of the identical time multiplexing date frame in said a plurality of clocks source, obtaining first bit value of additional spare bits;
The packet encapsulation unit is used for the identical time multiplexing date frame in said a plurality of clocks source is carried out structuring encapsulation, generates to be used for the structural data bag that transmits at packet switching network;
Dispensing unit is used for first bit value of the said additional spare bits of configuration in the pseudo-line traffic control field in packet header of said structural data bag;
First transmitting element is used for sending to receiver through packet switching network the structural data bag of first bit value carry said additional spare bits.
The embodiment of the invention also provides a kind of network system, comprises above-mentioned transmitter, also comprises a receiver;
Said receiver comprises:
First receiving element is used to receive the structural data bag of first bit value that carries said additional spare bits;
First resolution unit is used for said structural data bag is resolved, and obtains first bit value of the said additional spare bits of carrying in the pseudo-line traffic control field in packet header of structural data bag;
The first one-tenth frame unit is used to generate the time multiplexing date frame, and first bit value of said additional spare bits is written in the frame head of said time multiplexing date frame.
The transmission method of the additional spare bits that the embodiment of the invention provides, transmitter and network system; When carrying out the transfer of data of Pseudo Wire Emulation Edge-to-Edge business; From the frame head of tdm data frame, extract first bit value of additional spare bits by the transmitter of packet switching network; Then first bit value of above-mentioned additional spare bits is written in the PW control field in packet header of structural data bag; This structural data bag is used for transmitting at packet switching network, by transmitter above-mentioned structural data bag is sent to receiver then.Through this embodiment; First bit value of the additional spare bits of effectively carrying in the frame head with the time multiplexing date frame is transferred to the receiving terminal of packet switching network; In the time of can being implemented in the structuring encapsulation of data transmission of carrying out pseudo wire emulation service, effectively transmission adds any bit value of spare bits.
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 one to the accompanying drawing of required use in embodiment or the description of the Prior Art below introduces simply; Obviously, the accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of the transmission method of additional spare bits in the one embodiment of the invention;
Fig. 2 is the principle schematic of end-to-end pseudo wire emulation service in the one embodiment of the invention;
Fig. 3 is the structural representation of transmitter in the one embodiment of the invention;
Fig. 4 is the system schematic of one embodiment of the invention;
Fig. 5 is the system schematic of another embodiment of the present invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer; To combine the accompanying drawing in the embodiment of the invention below; Technical scheme in the embodiment of the invention is carried out clear, intactly description; Obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
When carrying out pseudo wire emulation service, wherein the transfer of data of structuring packing forms can't effectively solve the transparent transmission problem of adding spare bits to prior art, and the embodiment of the invention provides a kind of technical scheme.Fig. 1 is the schematic flow sheet of the transmission method of additional spare bits in the one embodiment of the invention, and is as shown in Figure 1, comprises following content.Step:
Step 101, transmitter obtain the identical time multiplexing date frame in a plurality of clocks source.
For each Frame in the identical time multiplexing date frame in a plurality of clocks source, in its frame head, carried a bit value of additional spare bits respectively, and the bit value of the additional spare bits of carrying in the different Frames is identical.
Transmitter can obtain the identical time multiplexing date frame in said a plurality of clocks source through the mode that receives, and also can obtain the identical time multiplexing date frame in said a plurality of clocks source through the mode that generates.
Obtain first bit value of additional spare bits in the frame head of step 102, the first time multiplexing date frame of said transmitter from the identical time multiplexing date frame in said a plurality of clocks source.The first time multiplexing date frame is any time multiplexing date frame in said a plurality of said time multiplexing date frame.First bit value is the value of any bit bit of said additional spare bits.
Alternatively, the frame head of said time multiplexing date frame is first time slot of the frame in the link (E1 link) of the primary rate of support European standard, just first passage.
Alternatively, the frame head of said time multiplexing date frame is the framing bit position (F bit) of the frame in the link (T1 link) of the primary rate of support North America and Nippon Standard.
Step 103, said transmitter are carried out the structuring encapsulation to the identical time multiplexing date frame in said a plurality of clocks source, generate to be used for the structural data bag that transmits at packet switching network.
Said structuring encapsulation comprises the data load in the passage in the identical Time Division Multiplexing Frame in a plurality of clocks source on the extraction multilink, then data load is carried out assembled package, and adds packet header, generates packet.For example, as shown in Figure 2, transmitter is through having provided three tdm data frames that different T1 links receive, and each tdm data frame wherein comprises frame head, in frame head, has carried a bit value of described additional spare bits.In addition, each tdm data frame also comprises 24 time slots that are used to transmit payload user data, also can be described as 24 passages, promptly comprises passage 1, passage 2...... passage 24.Receiver generates a structural data bag according to the tdm data frame on said three different T1 links.Preferably, described structural data bag can be IP packet, UDP (UDP) packet or transmission control protocol (TCP) packet.
First bit value of the said additional spare bits of configuration in step 104, said transmitter pseudo-line (PW) control field in the packet header of said structural data bag.Wherein, said first bit value is represented the value of any bit in the additional spare bits, and is not used in the value that limits some specific bits.
Alternatively; In the present embodiment; First bit value of the said additional spare bits of configuration comprises in the said PW control field in the packet header of structural data bag: first bit value of the said additional spare bits of configuration in the sub-fields combination in said PW control field; Wherein said son field combination comprises L son field and M son field, and the length of said L son field is 1 bit, and the length of said M son field is 2 bits.
In pseudo wire emulation when transmission of carrying out the tdm data frame, the frame head of tdm data frame comprise synchronously, verification and alarm function.Wherein, alarm need pass through receiver by the transmitter transmission as the important information of network operation.Therefore; Based on the circuit emulation service of packet switching network (Circuit Emulation Service over PSN, hereinafter to be referred as: CESoPSN) in the agreement, defined sub-fields combination in the PW control field; Said son field combination comprises L son field and M son field; Wherein, the length of L son field is 1 bit, and the length of M son field is 2 bits.Said son field combination can be used for transmitting warning information to the receiver opposite end.
This CESoPSN agreement is by the Internet engineering duty group (Internet Engineering Task Force; Hereinafter to be referred as: RFC5086 standard definition IETF); It supports the technical scheme of structuring encapsulation, and this agreement is as shown in table 1 to the definition of said son field combination:
| ?L | M | The coding definition |
| ?0 | 00 | The CESoPSN packet, normal conditions |
| ?0 | 01 | Keep following the use |
| 0 | 10 | The CESoPSN packet, the RDI state of adjunct circuit |
| 0 | 11 | Be preserved for signaling message |
| 1 | 00 | Tdm data is invalid, and quiet lotus can be ignored |
| 1 | 01 | Keep following the use |
| 1 | 10 | Keep following the use |
| 1 | 11 | Keep following the use |
Table 1
Definition according to the said son field combination that comprises L son field and M son field in the table 1 pair PW control field can find out that the CESoPSN agreement is that said son field has been reserved a plurality of values, has promptly reserved the combined value of a plurality of untapped L son fields and M son field.
Because a bit value of additional spare bits can value be 0, can value be 1 also, and the possibility of two kinds of values is promptly arranged.
Therefore, alternatively, can use the CESoPSN agreement is that two kinds of any two values in a plurality of values of reserving of said son field combination bit value representing additional spare bits maybe values.In the present embodiment; A kind ofly realize that said method of carrying first bit value of said additional spare bits through the sub-fields in said PW control field combination comprises: first value or second value that the value of said son field combination are configured to be used to represent first bit value of said additional spare bits; Wherein, Said first value and second value are that said son field makes up any two values in a plurality of values of reserving for the CESoPSN agreement; First bit value of a said additional spare bits of expression in said first value and said second value is 0, and another representes that first bit value of said additional spare bits is 1.
For example, when said first value is 110, promptly L son field value is 1; M son field value is 10; Said second value is 111, and promptly L son field value is 1, and M son field value is 11 o'clock; Can use first bit value of the additional spare bits of 110 expressions is 0, and using first bit value of the additional spare bits of 111 expressions is 1.
Alternatively, the embodiment of the invention also provides another kind of method of carrying first bit value of said additional spare bits through the combination of the sub-fields in the said PW control field.
Said first bit value that carries said additional spare bits through the sub-fields in said PW control field combination comprises: the value of said son field combination is configured to 000 or one reserves value; Wherein, Said reservation value is that said son field makes up any value in a plurality of values of reserving for the CESoPSN agreement; Said 000 with said reservation value in one the expression said additional spare bits first bit value be 0; Another representes that first bit value of said additional spare bits is 1, and said 000 representes that also said packet is a CESoPSN data message.
That is to say; Use a kind of of first bit value of the additional spare bits of value 000 expression in the combination of said son field maybe value, using the CESoPSN agreement be that any value in a plurality of values of reserving of said son field combination representes that the another kind of first bit value of additional spare bits maybe value.Shown in first bit value be any bit value of said idle extra order.000 has been normal CESoPSN packet by the CESoPSN protocol definition for the expression packet.Embodiments of the invention make it both can represent that packet was normal CESoPSN packet in accordance with having carried out the implication expansion to 000 on the basis of CESoPSN agreement, can represent a bit value of additional spare bits again, have carried out multiplexing to 000 this value.So just, can reduce the taking of the reservation value of said son field combination, only need to use the reservation value of a said son field combination, realize the optimization that resource is used.
Step 105, said transmitter send the structural data bag of first bit value that carries said additional spare bits to receiver through packet switching network.
In the above embodiment of the present invention; When carrying out the transfer of data of Pseudo Wire Emulation Edge-to-Edge business; From the frame head of tdm data frame, extract first bit value of additional spare bits by the transmitter of packet switching network; Then first bit value of above-mentioned additional spare bits is written in the PW control field in packet header of structural data bag, this structural data bag is used for transmitting at packet switching network, by transmitter above-mentioned structural data bag is sent to receiver then.Through this embodiment; First bit value of the additional spare bits of effectively carrying in the frame head with the time multiplexing date frame is transferred to the receiving terminal of packet switching network; In the time of can being implemented in the structuring encapsulation of data transmission of carrying out pseudo wire emulation service, effectively transmission adds any bit value of spare bits.Further,, can the bit value of the additional spare bits in a plurality of Frames on the link at said first time multiplexing date frame place be transferred to receiver, make receiver can obtain complete additional spare bits based on the present embodiment disclosed method.
Receiver is after receiving above-mentioned structural data bag; Can resolve said structural data bag; And obtain first bit value of the additional spare bits in the PW control field in packet header of structural data bag; And when generating the tdm data frame, first bit value of annex spare bits is written in the frame head of tdm data frame.The technical scheme of structural data that the embodiment of the invention provides encapsulation has realized the transparent transmission to the Sa bit, can be applied to point-to-point or put the transfer of data of multiple spot.
Embodiment is corresponding with said method; One embodiment of the present of invention also provide a kind of transmitter; Fig. 3 is the structural representation of transmitter in the one embodiment of the invention; As shown in Figure 3, this transmitter comprises first acquiring unit 11, second acquisition unit 12, packet encapsulation unit 13, dispensing unit 14 and first transmitting element 15, and wherein first acquiring unit 11 is used to obtain the identical time multiplexing date frame in a plurality of clocks source; Second acquisition unit 12 is used for from the frame head of the first time multiplexing date frame of the identical time multiplexing date frame in said a plurality of clocks source, obtaining first bit value of additional spare bits; Packet encapsulation unit 13 is used for the identical time multiplexing date frame in said a plurality of clocks source is carried out structuring encapsulation, generates to be used for the structural data bag that transmits at packet switching network; Dispensing unit 14 is used for first bit value of the said additional spare bits of configuration in the pseudo-line traffic control field in the packet header of said structural data bag; First transmitting element 15 is used for sending to receiver through packet switching network the structural data bag of first bit value that carries said additional spare bits.
In the present embodiment; From the frame head of the first time multiplexing date frame of the identical tdm data frame in a plurality of clocks source, obtain first bit value of additional spare bits through second acquisition unit 12; Carrying out structuring when encapsulation by the packet encapsulation unit; Be written in the PW control field in packet header of structural data bag and transmit, can be implemented in the transparent transmission that carries out Pseudo Wire Emulation Edge-to-Edge additional spare bits when professional.
In the embodiment of the invention; Dispensing unit 14 wherein specifically can be used for first bit value of the said additional spare bits of configuration in the sub-fields combination in the pseudo-line traffic control field in the packet header of structural data bag; Wherein said son field combination comprises L son field and M son field; The length of said L son field is 1 bit, and the length of said M son field is 2 bits.
And concrete, above-mentioned dispensing unit 14 can comprise the first configuration subelement or the second configuration subelement.
The said first configuration subelement is used for first value or second value that value with the combination of above-mentioned son field is configured to be used to represent first bit value of said additional spare bits; Wherein, Above-mentioned first value and second value are that said son field makes up any two values in a plurality of values of reserving for the circuit emulation service agreement based on packet switching network; First bit value of a said additional spare bits of expression in said first value and said second value is 0, and another representes that first bit value of said additional spare bits is 1.
The said second configuration subelement is used for the 000 or reservation value that is configured to of son field combination is carried first bit value of said additional spare bits; Wherein, Said reservation value is that said son field makes up any value in a plurality of values of reserving for the circuit emulation service agreement based on packet switching network; Said 000 with said reservation value in one the expression said additional spare bits first bit value be 0; Another representes that first bit value of said additional spare bits is 1, and said 000 representes that also said packet is a circuit emulation service packet based on packet switching network.
In the embodiment of the invention, wherein the frame head of tdm data frame is first time slot of the frame in the link (E1 link) of the primary rate of support European standard, just first passage.Or the frame head of tdm data frame is the framing bit position (F bit) of the frame in the link (T1 link) of the primary rate of support North America and Nippon Standard.
As shown in Figure 4; System schematic for one embodiment of the invention; The embodiment of the invention provides a kind of network system; The transmitter that this network system the foregoing description provides, the Reference numeral of said transmitter in Fig. 4 is 10, said transmitter 10 can comprise first acquiring unit 11 as shown in Figure 3, second acquisition unit 12, packet encapsulation unit 13, dispensing unit 14 and first transmitting element 15.Said network system also comprises and a receiver 20; This receiver 20 comprises first receiving element 21, first resolution unit 22 and the first one-tenth frame unit 23, and wherein first receiving element 21 is used to receive the structural data bag of first bit value that carries said additional spare bits; First resolution unit 22 is used for said structural data bag is resolved, and obtains first bit value of the said additional spare bits of carrying in the pseudo-line traffic control field in packet header of structural data bag; The first one-tenth frame unit 23 is used to generate the time multiplexing date frame, and first bit value of said additional spare bits is written in the frame head of said time multiplexing date frame.
As shown in Figure 5, be the system schematic of another embodiment of the present invention, system as shown in Figure 5 comprises transmitter 30 and receiver 40 respectively, transmitter 30 here and receiver 40 are for packet switching network.
In system as shown in Figure 5; Can and can on function, transmitter and receiver be divided into local service processing unit (Native Service Processing according to function; Hereinafter to be referred as: NSP) and end-to-end pseudo-line (Pseudo-Wire is hereinafter to be referred as PW) entity., in the TDM business, NSP is appreciated that to Frame Handler (Framer) chip, be used for being connected with time division multiplex network, and the PW entity is connected with packet switching network.Wherein the NSP31 of transmitter 30 comprises first acquiring unit 11 and second acquisition unit 12 in embodiment illustrated in fig. 3; Can receive the identical tdm data frame in a plurality of clocks source that time division multiplex network sends over, obtain first bit value of additional spare bits in the frame head of any tdm data frame.Can comprise a plurality of PW entities in the transmitter 30, each PW entity is connected with a receiver, and for example, in Fig. 5, transmitter 30 has comprised 2 PW entities, is respectively PW entity 32 and PW entity 33.Each PW entity is accomplished the function of middle packet encapsulation unit 13 embodiment illustrated in fig. 3, dispensing unit 14 and first transmitting element 15.And for a TDM link, it maybe be only and a PW entity associated.Therefore; The tdm data frame of this TDM link and first bit value of additional spare bits also only need be transmitted to related PW entity and get final product; And carry out structuring by the PW entity of association and handle; The generating structure packet, and first bit value that will add spare bits is written in the PW control field in packet header of structural data bag.
At receiver 40 places; The function that PW entity 41 is wherein accomplished like first receiving element 21 and first resolution unit 22 in the receiver 20 in the described system of Fig. 4; The structural data bag is resolved; And obtaining first bit value of additional spare bits, data that then above-mentioned parsing obtained and first bit value of additional spare bits are transmitted to NSP42.NSP42 accomplishes the function of the first one-tenth frame unit 23, is used to generate the time multiplexing date frame, and first bit value of said additional spare bits is written in the frame head of time multiplexing date frame, so that send above-mentioned time multiplexing date frame to the TDM network.
Alternatively, a plurality of unit that occur among the present invention can be hardware cell, also can be software unit, can also a part be hardware cell, and a part is a software unit.
The technical scheme that the embodiment of the invention provides; Wherein when carrying out the Pseudo Wire Emulation Edge-to-Edge business; Utilize the technical scheme of structuring encapsulation, realized effective transmission, and then can realize transmission complete additional spare bits to any bit value of the additional spare bits of time multiplexing date frame.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be accomplished through the relevant hardware of program command; Aforesaid program can be stored in the computer read/write memory medium; This program the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
What should explain at last is: above embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although with reference to previous embodiment the present invention has been carried out detailed explanation, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.
Claims (11)
1. the transmission method of an additional spare bits is characterized in that, comprising:
Transmitter obtains the identical time multiplexing date frame in a plurality of clocks source;
Obtain first bit value of additional spare bits in the frame head of the first time multiplexing date frame of said transmitter from the identical time multiplexing date frame in said a plurality of clocks source;
Said transmitter carries out structuring encapsulation to the identical time multiplexing date frame in said a plurality of clocks source, generates to be used for the structural data bag that transmits at packet switching network;
First bit value of the said additional spare bits of configuration in the pseudo-line traffic control field of said transmitter in the packet header of said structural data bag;
Said transmitter sends the structural data bag of first bit value that carries said additional spare bits to receiver through packet switching network.
2. method according to claim 1 is characterized in that, first bit value of the said additional spare bits of configuration comprises in the said pseudo-line traffic control field in the packet header of said structural data bag:
First bit value of the said additional spare bits of configuration in the sub-fields combination in said pseudo-line traffic control field, wherein said son field combination comprises L son field and M son field, and the length of said L son field is 1 bit, and the length of said M son field is 2 bits.
3. method according to claim 2 is characterized in that, said first bit value that carries said additional spare bits through the sub-fields in said pseudo-line traffic control field combination comprises:
The value of said son field combination is configured to be used to represent first value or second value of first bit value of said additional spare bits; Wherein, Said first value and second value are that said son field makes up any two values in a plurality of values of reserving for the circuit emulation service agreement based on packet switching network; First bit value of a said additional spare bits of expression in said first value and said second value is 0, and another representes that first bit value of said additional spare bits is 1.
4. method according to claim 2 is characterized in that, wherein, said first bit value that carries said additional spare bits through the sub-fields in said pseudo-line traffic control field combination comprises:
The value of said son field combination is configured to 000 or reservation value; Wherein, Said reservation value is that said son field makes up any value in a plurality of values of reserving for the circuit emulation service agreement based on packet switching network; Said 000 with said reservation value in one the expression said additional spare bits first bit value be 0; Another representes that first bit value of said additional spare bits is 1, and said 000 representes that also said packet is a circuit emulation service packet based on packet switching network.
5. according to any described method of claim 1 to 4, it is characterized in that, also comprise:
Receiver receives the structural data bag that carries first bit value of said additional spare bits in the pseudo-line traffic control word in the packet header;
Receiver is resolved said structural data bag, and obtains first bit value of the said additional spare bits of carrying in the pseudo-line traffic control field in packet header of structural data bag;
Receiver generates the time multiplexing date frame, and first bit value of said additional spare bits is written in the frame head of said time multiplexing date frame.
6. according to any described method of claim 1 to 5, it is characterized in that,
The frame head of said time multiplexing date frame is first time slot of the frame in the link of the primary rate of support European standard;
Or,
The frame head of said time multiplexing date frame is the framing bit position of the frame in the link of the primary rate of support North America and Nippon Standard.
7. a transmitter is characterized in that, comprising:
First acquiring unit is used to obtain the identical time multiplexing date frame in a plurality of clocks source;
Second acquisition unit is used for from the frame head of the first time multiplexing date frame of the identical time multiplexing date frame in said a plurality of clocks source, obtaining first bit value of additional spare bits;
The packet encapsulation unit is used for the identical time multiplexing date frame in said a plurality of clocks source is carried out structuring encapsulation, generates to be used for the structural data bag that transmits at packet switching network;
Dispensing unit is used for first bit value of the said additional spare bits of configuration in the pseudo-line traffic control field in packet header of said structural data bag;
First transmitting element is used for sending to receiver through packet switching network the structural data bag of first bit value carry said additional spare bits.
8. transmitter according to claim 7; It is characterized in that; Said dispensing unit is used for first bit value of the said additional spare bits of configuration in the sub-fields combination in the pseudo-line traffic control field in the packet header of said structural data bag; Wherein said son field combination comprises L son field and M son field, and the length of said L son field is 1 bit, and the length of said M son field is 2 bits.
9. want 8 described transmitters according to right; It is characterized in that; Said dispensing unit comprises the first configuration subelement; Be used for first value or second value that value with the combination of said son field is configured to be used to represent first bit value of said additional spare bits, wherein, said first value and second value are any two values in a plurality of values of reserving of said son field combination for the circuit emulation service agreement based on packet switching network; First bit value of a said additional spare bits of expression in said first value and said second value is 0, and another representes that first bit value of said additional spare bits is 1.
10. transmitter according to claim 8; It is characterized in that; Said dispensing unit comprises the second configuration subelement, is used for the value of son field combination is configured to 000 or reservation value, wherein; Said reservation value is that said son field makes up any value in a plurality of values of reserving for the circuit emulation service agreement based on packet switching network; Said 000 with said reservation value in one the expression said additional spare bits first bit value be 0, another representes that first bit value of said additional spare bits is 1, said 000 representes that also said packet is a circuit emulation service packet based on packet switching network.
11. a network system comprises according to any described transmitter of claim 7 to 10, it is characterized in that, also comprises a receiver;
Said receiver comprises:
First receiving element is used to receive the structural data bag of first bit value that carries said additional spare bits;
First resolution unit is used for said structural data bag is resolved, and obtains first bit value of the said additional spare bits of carrying in the pseudo-line traffic control field in packet header of structural data bag;
The first one-tenth frame unit is used to generate the time multiplexing date frame, and first bit value of said additional spare bits is written in the frame head of said time multiplexing date frame.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2011/079044 WO2012119422A1 (en) | 2011-08-29 | 2011-08-29 | Method for transmitting additional idle bit, transmitter and network system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102388582A true CN102388582A (en) | 2012-03-21 |
| CN102388582B CN102388582B (en) | 2014-05-07 |
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| CN201180001424.4A Expired - Fee Related CN102388582B (en) | 2011-08-29 | 2011-08-29 | Transmission method for adding idle bit, transmitter and network system |
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| Country | Link |
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| CN (1) | CN102388582B (en) |
| WO (1) | WO2012119422A1 (en) |
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| CN107979442A (en) * | 2016-10-25 | 2018-05-01 | 华为技术有限公司 | A kind of method, the network equipment and transmitting system for sending message and receiving message |
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- 2011-08-29 CN CN201180001424.4A patent/CN102388582B/en not_active Expired - Fee Related
- 2011-08-29 WO PCT/CN2011/079044 patent/WO2012119422A1/en active Application Filing
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Also Published As
| Publication number | Publication date |
|---|---|
| CN102388582B (en) | 2014-05-07 |
| WO2012119422A1 (en) | 2012-09-13 |
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