CN106330417B

CN106330417B - The method, apparatus of method, apparatus and the data parsing of Deta bearer

Info

Publication number: CN106330417B
Application number: CN201510345466.XA
Authority: CN
Inventors: 苏伟; 吴秋游; 肖新
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2015-06-19
Filing date: 2015-06-19
Publication date: 2019-09-13
Anticipated expiration: 2035-06-19
Also published as: WO2016202296A1; CN106330417A

Abstract

The invention discloses the method, apparatus that a kind of method, apparatus of Deta bearer and data parse, and are related to technical field of photo communication, in order to solve the problems, such as that time delay existing in the prior art is larger and invents.Wherein, the method for Deta bearer includes: to receive the road m common public radio interface CPRI business, wherein m is the integer greater than 1；The road the m CPRI business received is mapped in a manner of one-to-one in the optical channel data tributary unit of the road m；The road the m optical channel data tributary unit for carrying CPRI business is multiplexed into the time slot of optical channel Payload Unit；Wherein, the rate of the time slot is equal to CPRI basic rate.The present invention applies in the transmit process of CPRI business.

Description

The method, apparatus of method, apparatus and the data parsing of Deta bearer

Technical field

The present invention relates to the sides that technical field of photo communication more particularly to the method, apparatus and data of Deta bearer parse Method, device.

Background technique

Currently, distributed base station using more and more extensive.Compared with conventional macro base station, distributed base station is by indoor base band Processing unit (English: Building Base band Unit, abbreviation BBU) and Remote Radio Unit (English: Radio Remote Unit, referred to as: RRU) mutually separate, it is connected between BBU and RRU by optical fiber.Thus, it is connect from general public wireless The base band data (hereinafter referred CPRI business) of mouth (English: Common Public Radio Interface, abbreviation: CPRI) It needs through optical transfer network (English: Optical Transport Network, abbreviation: OTN) transmission.Wherein, OTN network electricity Layer technical specification defines the light channel unit of three levels to realize different functions, respectively optical channel Payload Unit (English Text: Optical Channel Payload Unit, referred to as: OPUk), the function of client signal carrying is provided；Optical channel data Unit (English: Optical Channel Data Unit, referred to as: ODUk), the maintenance and operation of end-to-end transmitting path is provided Function；Optical channel transmission unit (English: Optical Channel Transport Unit, referred to as: OTUk), point-to-point is provided The Network Management Function of Optical Channel Transport Unit-k rank.Wherein, coefficient k indicates the OPUk for the different bit rates supported, ODUk and OTUk.K=1 indicates that bit rate grade is 2.5Gbit/s, and k=2 indicates that bit rate grade is 10Gbit/s, k= 3 indicate that bit rate grade is 40Gbit/s, and k=4 indicates that bit rate grade is 100Gbit/s, and k=flex indicates bit speed Rate is any.It is as shown in Figure 1 to include check field (English: Forward Error Correction, abbreviation: FEC) for one kind The structural schematic diagram of OTUk frame structure comprising 4 rows 4080 column, wherein preceding 14 column are respectively included for providing frame synchronization positioning Function frame alignment sequence (English: Frame Alignment Signal, referred to as: FAS), ODUk expense (English: Overhead is referred to as: OH) area and the overhead area OTUk；15 column and 16 are classified as the overhead area OPUk；17 column are classified as OPU payload to 3824 Area；3825 to 4080 are classified as check field.It is illustrated in figure 2 the schematic diagram of OPUk frame structure, is preceding 3824 shown in Fig. 1 It arranges, the primary structure of OPUk is illustrated only in Fig. 2, i.e., 15 column to 3824 column, i.e., mainly include the overhead area OPU and the payload section OPU.

CPRI defines a series of rates, according to newest CPRI standard as a kind of general standard interface comprising The interface of totally eight seed types of CPRI option 1~8, corresponding rate are (to compile from 491.52Mbit/s to 9830.4Mbit/s Before code) or totally eight kinds of rates from 614.4Mbit/s to 10137.6Mbit/s (after coding).In practical application, due to 2G, 3G and 4G is network coexisted, and same steel tower often includes the multiple types base station of multiple operators, thus same website has mixing and passes Send the Deta bearer demand of the CPRI business of a variety of different rates.

In the prior art, in the transmit process for carrying out CPRI mixed service using OTN network, it is necessary first to will be to be transmitted CPRI business be mapped to low order OPU, addition ODU expense constitutes low order ODU (for ease of description, hereafter by the process simplification It is described as CPRI business to be transmitted being mapped to low order ODU)；Low order ODU business is mapped to high rank optical channel data branch again It is multiplexed with high-order OPU after in road unit (English: Optical channel Data Tributary Unit, abbreviation ODTU), (for ease of description, hereafter the process simplification is described as to map multiplexing to high-order OPU) again by high-order by low order ODU business OPU passes through to add layer by layer after corresponding expense ultimately forms high-order OTU according to the sequence of ODU, OTU to be transmitted by optical fiber.

Such as: current CPRI mixed service to be transmitted is such as Fig. 3 when including the mixed service of option1~8 CPRI It is shown, it is needed using the scheme of the prior art by following two processes: 1) for CPRI option1, CPRI option2, ODU0 is respectively mapped to by general mapping regulation (English: Generic Mapping Procedure, abbreviation: GMP)；For CPRI option3 is mapped to ODU1 by GMP；For option4~8 CPRI, then regulation (English is mapped by bit synchronous Text: Bit Synchronous Mapping Procedure, referred to as: BMP) it is respectively mapped to ODUflex.2) by multichannel low order ODU (ODU0, ODU1 or ODUflex) business is multiplexed into high-order OPU by GMP, then final by adding corresponding expense layer by layer It forms high-order OTU and sends.

Through inventor the study found that CPRI business is more demanding to time delay, and lead in the prior art by each CPRI business When crossing OTN transmission of network, required time delay is larger, thus is unfavorable for the efficient quick transmission of CPRI business.

Summary of the invention

The present invention provides a kind of method and device of Deta bearer, can be improved the utilization rate of the bandwidth of OTN network.

In order to achieve the above objectives, the present invention adopts the following technical scheme:

In a first aspect, the present invention provides a kind of methods of Deta bearer, which comprises

Receive the road m common public radio interface CPRI business, wherein m is the integer greater than 1；

The road the m CPRI business received is mapped in a manner of one-to-one in the optical channel data tributary unit of the road m；

The road the m optical channel data tributary unit for carrying the CPRI business is multiplexed into the time slot of optical channel Payload Unit In；

Wherein, the rate of the time slot is equal to CPRI basic rate.

With reference to first aspect, in the first implementation of first aspect, the road the m CPRI business that will be received with Before one-to-one mode is mapped in the optical channel data tributary unit of the road m, the method also includes:

According to the rate of the rate of CPRI business described in every road and the single time slot, the road m CPRI business institute is determined First quantity of the time slot needed；

Choose the optical channel Payload Unit of the time slot comprising first quantity.

The first implementation with reference to first aspect, in second of implementation of first aspect, selection it is described Optical channel Payload Unit is the optical channel Payload Unit of n times of scheduled rate, the optical channel Payload Unit of the n times of scheduled rate by N optical channel Payload Unit logic branch is formed according to preset byte interleaver；

The single optical channel Payload Unit logic branch includes overhead area and payload section, and payload section includes the second present count The time slot of amount；

The value of the n is determined according to the ratio of first quantity and the second quantity.

Second of implementation with reference to first aspect, in the third implementation of first aspect, the default speed Rate is 10Gbit/s or 12Gbit/s.

With reference to first aspect, first aspect the first, any one in second or the third implementation, In 4th kind of implementation of first aspect, the road the m CPRI business that will be received is mapped to the road m light in a manner of one-to-one In channel data tributary unit, specifically include:

CPRI business described in the first via is determined as reference clock business, the first via CPRI business is described at least two In the CPRI business of road it is any all the way；

Passed through by the reference clock business and with the reference clock business using the CPRI business of identical clock source Bit synchronous, which maps regulation or synchronizes general mapping regulation, to be mapped into correspondingly in the optical channel data tributary unit；

Regulation will be mapped one by one by async-generic using the CPRI business in different clocks source with the reference clock business It is corresponding to be mapped into the optical channel data tributary unit.

With reference to first aspect, first aspect the first, second, it is any in the third or the 4th kind of implementation One kind, in the 5th kind of implementation of first aspect, the road the m optical channel data branch that the CPRI business will be carried While in the unit multiplexed time slot to optical channel Payload Unit, the method also includes:

Increase payload type instruction, institute in the value of multi-frame instruction for the overhead area of the frame structure of 0 optical channel Payload Unit Payload type instruction is stated for indicating that the type of service that the optical channel Payload Unit currently carries is multichannel CPRI business；

Increase in the overhead area of the frame structure of the optical channel Payload Unit for the maximum value that the value of multi-frame instruction indicates for 2 to multi-frame Multiplexing structure is added to indicate, the multiplexing structure of two adjacent frames is indicated for indicating whether current time slots are occupied, current time slots are held The mark of the CPRI type of service of load, CPRI business or CPRI service groups.

With reference to first aspect, first aspect the first, second, the third realize, the 4th kind or the 5th kind realization Any one in mode, in the 6th kind of implementation of first aspect, the road the m CPRI business that will be received is with a pair Before one mode is mapped in the optical channel data tributary unit of the road m, the method also includes:

It will identical at least CPRI business be determined as one group of business all the way using identical clock source and type of service；

If it is determined that one group of business in include at least two-way CPRI business, then will at least two-way CPRI business ratio Special or byte is multiplexed with serial bit stream all the way.

With reference to first aspect, first aspect the first, second, the third realize, the 4th kind, the 5th kind realize or Any one in 6th kind of implementation, in the 7th kind of implementation of first aspect, in the optical channel Payload Unit The bandwidth of single time slot is the bandwidth before CPRI option 1 encodes；

It is described that at least two-way CPRI business is respectively mapped to the CPRI business with described in identical number Before in optical channel data tributary unit, the method also includes:

The road the m CPRI business to be lifted is decoded, the decoded road the m CPRI business is obtained.

With reference to first aspect, first aspect the first, second, the third realize, the 4th kind, the 5th kind realize, the Any one in six kinds or the 7th kind of implementation, it is described to receive in the 8th kind of implementation of first aspect The road m CPRI business while be mapped in the optical channel data tributary unit of the road m in a manner of one-to-one, the method is also wrapped It includes:

Pointer overhead information corresponding with CPRI business described in every road is generated respectively, and the pointer overhead information is used to indicate The start frame of CPRI business described in decoded every road is in the position of the corresponding optical channel data tributary unit；

The pointer overhead information is stored to the overhead area of corresponding optical channel data tributary unit respectively.

With reference to first aspect, first aspect the first, second, the third realize, the 4th kind, the 5th kind realize, the Any one in six kinds or the 7th kind of implementation, it is described to receive in the 9th kind of implementation of first aspect The road m CPRI business while be mapped in the optical channel data tributary unit of the road m in a manner of one-to-one, the method is also wrapped It includes:

The pointer overhead information is stored into the multiplexing structure instruction of the optical channel Payload Unit respectively.

With reference to first aspect, first aspect the first, second, the third realize, the 4th kind, the 5th kind realize, the Any one in six kinds or the 7th kind of implementation, it is described to receive in the tenth kind of implementation of first aspect The road m CPRI business be mapped to before the optical channel data tributary unit of the road m in a manner of one-to-one, the method also includes:

CPRI start frame frame headers overhead corresponding with every road CPRI business, the CPRI start frame frame headers overhead are added respectively Including at least the CPRI business described in every road that is used to indicate start frame in the position of the corresponding optical channel data tributary unit Frame head indicate information.

With reference to first aspect, first aspect the first, second, the third realize, the 4th kind, the 5th kind realize, the Any one in six kinds, the 7th kind, the 8th kind, the 9th kind or the tenth kind implementations, the tenth in first aspect are a kind of In implementation, the road the m optical channel data tributary unit that will carry the CPRI business is multiplexed into optical channel payload list After in the time slot of member, the method also includes:

The optical channel Payload Unit for having carried the road the m CPRI business is added into optical channel transmission unit expense, structure At optical channel transmission unit.

With reference to first aspect, first aspect the first, second, the third realize, the 4th kind, the 5th kind realize, the Any one in six kinds, the 7th kind, the 8th kind, the 9th kind, the tenth kind or a kind of the tenth implementation in implementation, In 12nd kind of implementation of first aspect, the CPRI basic rate is the multiple of the basic frame rate of CPRI.

With reference to first aspect, first aspect the first, second, the third realize, the 4th kind, the 5th kind realize, the Appointing in implementation in six kinds, the 7th kind, the 8th kind, the 9th kind, the tenth kind, the tenth one kind or the 12nd kind of implementation Anticipate one kind, in the 13rd kind of implementation of first aspect, the CPRI basic rate be 491.52Mbit/s or 614.4Mbit/s。

Second aspect, the present invention provides a kind of methods of data parsing, which comprises

According to the information that the overhead area of the optical channel Payload Unit carries, the optical channel Payload Unit carrying is obtained Type of service；

When the type of service be include the CPRI mixed service of the road m CPRI business when, it is determining with the road the m CPRI business The one-to-one road m optical channel data tributary unit；

According to the mapping cost information carried in optical channel data tributary unit described in every road, to every road optical channel data branch Road unit carries out demapping processing, obtains the corresponding basic frame of at least two CPRI of every road CPRI business；

The location information for obtaining the corresponding CPRI start frame of CPRI business described in every road obtains opening from the CPRI start frame The basic frame of all CPRI to begin, the CPRI start frame are first basic frame of CPRI.

It is described according to the optical channel Payload Unit in the first implementation of second aspect in conjunction with second aspect The information that carries of overhead area, obtain the type of service of optical channel Payload Unit carrying, specifically include:

The payload type instruction information that the overhead area of the optical channel Payload Unit carries is obtained, according to the payload type It indicates information, obtains the type of service of the optical channel Payload Unit carrying.

In conjunction with the first of second aspect or second aspect implementation, in second of implementation of second aspect In, the determination and the one-to-one road the m optical channel data tributary unit of the road the m CPRI business specifically include:

The payload structure instruction information that the overhead area of the optical channel Payload Unit carries is obtained, according to the payload structure Indicate information obtain the optical channel Payload Unit whether each time slot occupied and the CPRI of occupied time slot carrying The type of business and the mark of CPRI business；

According to whether each time slot of the optical channel Payload Unit occupied and the CPRI of occupied time slot carrying The type of business and the mark of CPRI business, identification and the one-to-one road the m optical channel data branch list of the road the m CPRI business Member.

In conjunction with second aspect, second aspect the first or second of implementation in any one, in second party In the third implementation in face, the mapping cost information carried in the optical channel data tributary unit according to every road, Demapping processing is carried out to every road optical channel data tributary unit, it is basic to obtain corresponding at least two CPRI of every road CPRI business Frame specifically includes:

According to the mapping cost information carried in optical channel data tributary unit described in every road, corresponding every road CPRI is obtained The clock source information of business；

If the CPRI business is the reference clock business or uses identical clock with the reference clock business The CPRI business in source then maps regulation by bit synchronous or synchronizes general mapping regulation to corresponding optical channel data branch Unit carries out demapping processing；

If the CPRI business is to use the CPRI business in different clocks source with the reference clock business, by different It walks general mapping regulation and demapping processing is carried out to corresponding optical channel data tributary unit.

In conjunction with second aspect, second aspect the first, any one in second or the third implementation, In 4th kind of implementation of second aspect, the position letter for obtaining the corresponding CPRI start frame of CPRI business described in every road Breath, specifically includes:

The corresponding pointer overhead information of every road CPRI business is obtained, the corresponding CPRI starting of CPRI business described in every road is obtained The location information of frame；

Or

It identifies the corresponding CPRI start frame frame headers overhead of every road CPRI business, it is corresponding to obtain CPRI business described in every road The location information of CPRI start frame.

In conjunction with second aspect, second aspect the first, second, it is any in the third or the 4th kind of implementation One kind obtaining the position of the corresponding CPRI start frame of CPRI business described in every road in the 5th kind of implementation of second aspect Information, after obtaining the basic frame of all CPRI since the CPRI start frame, the method also includes:

The corresponding all basic frames of CPRI of the CPRI business described in every road carry out coded treatment.

The third aspect, the present invention also provides a kind of device of Deta bearer, described device includes:

Receiving unit, for receiving the road m common public radio interface CPRI business, wherein m is the integer greater than 1；

Map unit, the road the m CPRI business for will receive are mapped to the road m optical channel data branch in a manner of one-to-one In the unit of road；

Multiplexing Unit, for the road the m optical channel data tributary unit for carrying the CPRI business to be multiplexed into optical channel In the time slot of Payload Unit；

Wherein, the rate of the time slot is equal to CPRI basic rate.

In conjunction with the third aspect, in the first implementation of the third aspect, described device further includes processing unit, is used In:

In conjunction with the first implementation of the third aspect, in second of implementation of the third aspect, the processing is single The optical channel Payload Unit that member is chosen is the optical channel Payload Unit of n times of scheduled rate, and the light of the n times of scheduled rate is logical Road Payload Unit is formed by n optical channel Payload Unit logic branch according to preset byte interleaver；

In conjunction with the third aspect, the third aspect the first implementation or second of implementation in any one, In the third implementation of the third aspect, the map unit is specifically used for:

In conjunction with the first implementation, second of implementation or the third realization side of the third aspect, the third aspect Any one in formula, in the 4th kind of implementation of the third aspect, the Multiplexing Unit is also used to:

In conjunction with the first implementation of the third aspect, the third aspect, second of implementation, the third implementation or Any one in the 4th kind of implementation of person, in the 5th kind of implementation of the third aspect, described device further includes grouping Unit is specifically used for:

It, will at least two-way CPRI service bits when in the one group of business determined including at least two-way CPRI business Or byte is multiplexed with serial bit stream all the way.

In conjunction with the first implementation of the third aspect, the third aspect, second of implementation, the third implementation, Any one in 4th kind or the 5th kind of implementation, in the 6th kind of implementation of the third aspect, the optical channel The bandwidth of single time slot is the bandwidth before CPRI option 1 encodes in Payload Unit；

Described device further includes decoding unit, is specifically used for:

In conjunction with the third aspect, the third aspect the first, second, the third, the 4th kind, the 5th kind or the 6th kind of reality Now any one in mode, in the 7th kind of implementation of the third aspect, the map unit is also used to:

In conjunction with the third aspect, the third aspect the first, second, the third, the 4th kind, the 5th kind or the 6th kind of reality Now any one in mode, in the 8th kind of implementation of the third aspect, the map unit is also used to:

In conjunction with the third aspect, the third aspect the first, second, the third, the 4th kind, the 5th kind or the 6th kind of reality Now any one in mode, in the 9th kind of implementation of the third aspect, the processing unit is also used to:

In conjunction with the third aspect, the third aspect the first, second, the third, the 4th kind, the 5th kind, the 6th kind, the 7th Kind, any one in the 8th kind or the 9th kind of implementation, in the tenth kind of implementation of the third aspect, the multiplexing Unit is also used to:

Fourth aspect, the present invention also provides a kind of device of data parsing, described device includes:

Acquiring unit, the information for being carried according to the overhead area of the optical channel Payload Unit, obtains the optical channel The type of service of Payload Unit carrying；

Determination unit, for when the type of service be include the CPRI mixed service of the road m CPRI business when, determining and institute State the one-to-one road the m optical channel data tributary unit of the road m CPRI business；

De-mapping unit, the mapping cost information for carrying in the optical channel data tributary unit according to every road are right Every road optical channel data tributary unit carries out demapping processing, and it is basic to obtain corresponding at least two CPRI of every road CPRI business Frame；

The acquiring unit is also used to obtain the location information of the corresponding CPRI start frame of CPRI business described in every road, obtains To the basic frame of all CPRI since the CPRI start frame, the CPRI start frame is first basic frame of CPRI.

In conjunction with fourth aspect, in the first implementation of fourth aspect, the acquiring unit is specifically used for:

In conjunction with the first of fourth aspect or fourth aspect implementation, in second of implementation of fourth aspect In, the determination unit is specifically used for:

In conjunction with fourth aspect, fourth aspect the first implementation or second of implementation in any one, In the third implementation of fourth aspect, the de-mapping unit is specifically used for:

When the CPRI business is the reference clock business or uses identical clock source with the reference clock business CPRI business when, mapped by bit synchronous and regulation or synchronize general mapping regulation to corresponding optical channel data branch list Member carries out demapping processing；

When the CPRI business is to use the CPRI business in different clocks source with the reference clock business, by asynchronous General mapping regulation carries out demapping processing to corresponding optical channel data tributary unit.

In conjunction with appointing in the first implementation of fourth aspect, fourth aspect, second or the third implementation It anticipates one kind, in the 4th kind of implementation of fourth aspect, the acquiring unit is specifically used for:

Or

In conjunction with fourth aspect, fourth aspect the first, second, it is any in the third or the 4th kind of implementation One kind, in the 5th kind of implementation of fourth aspect, described device further includes coding unit, is specifically used for:

The method and device of Deta bearer provided by the invention, after receiving the road n CPRI business, directly by the road n CPRI Business mapping multiplexing re-maps multiplexing with, needing for CPRI business to be first mapped in low order ODU in the prior art into OPU It is compared into high-order OPU, the present invention can realize the carrying of CPRI business using level-one mapping, can reduce because two-stage maps Bring time delay, and then can be realized the quick carrying of CPRI business.

The method and device of data parsing provided by the invention, it is corresponding with the method for the Deta bearer of transmitting terminal, it is only necessary to A demapping is wanted, time delay required for demapping can be reduced, it is thus possible to realize the rapidly extracting of CPRI business.

Detailed description of the invention

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with It obtains other drawings based on these drawings.

Fig. 1 is the structural schematic diagram of the OTU frame structure provided in the prior art；

Fig. 2 is the structural schematic diagram of the OPU frame structure provided in the prior art；

Fig. 3 is a kind of flow diagram of the method for the CPRI service bearer provided in the prior art；

Fig. 4 is the flow diagram of the method for the first Deta bearer provided in an embodiment of the present invention；

Fig. 5 is the flow diagram of the method for second of Deta bearer provided in an embodiment of the present invention；

The schematic diagram that the frame structure and time slot that Fig. 6 is single channel OPULL provided in an embodiment of the present invention divide；

The road n OPULL is passed through single byte multiplexing to be provided in an embodiment of the present invention by Fig. 7, constitutes the schematic diagram of 1 road OPU；

When Fig. 8 is that the OPU provided in an embodiment of the present invention being made of the road n OPULL carries data, time slot storage sequence Schematic diagram；

Fig. 9 is the flow diagram of the method for the third Deta bearer provided in an embodiment of the present invention；

Figure 10 is a kind of flow diagram of the method for addition payload structure instruction provided in an embodiment of the present invention；

Figure 11 is that the payload type of the multi-frame provided in an embodiment of the present invention being made of 256 OPU frames and multiplexing structure refer to The schematic diagram for the storage shown；

Figure 12 be it is provided in an embodiment of the present invention by the instruction of two neighboring multiplexing structure indicate same time slot occupancy situation, The schematic diagram of the CPRI service conditions of carrying；

Figure 13 is the flow diagram of the method for the 4th kind of Deta bearer provided in an embodiment of the present invention；

Figure 14 is the schematic diagram of the concrete application for the Deta bearer method that Figure 13 is provided；

Figure 15 is the flow diagram of the method for the 5th kind of Deta bearer provided in an embodiment of the present invention；

Figure 16 is the flow diagram of the method for the 6th kind of Deta bearer provided in an embodiment of the present invention；

Figure 17 is a kind of storage schematic diagram of pointer overhead provided in an embodiment of the present invention；

Figure 18 is the flow diagram of the method for the 7th kind of Deta bearer provided in an embodiment of the present invention；

Figure 19 is the storage schematic diagram of another pointer overhead provided in an embodiment of the present invention；

Figure 20 is the flow diagram of the method for the 8th kind of Deta bearer provided in an embodiment of the present invention；

Figure 21 is the schematic diagram of addition CPRI start frame frame head instruction provided in an embodiment of the present invention；

Figure 22 is a kind of CPRI superframe data that will increase the instruction of CPRI start frame frame head provided in an embodiment of the present invention Stream is mapped into the schematic diagram of ODTU；

Figure 23 is the flow diagram of the method for the 9th kind of Deta bearer provided in an embodiment of the present invention；

Figure 24 is the flow diagram of the method for the provided in an embodiment of the present invention ten kind of Deta bearer；

Figure 25 is a kind of multiplexing mapping of CPRI business that will mix provided in an embodiment of the present invention to the concrete application of OPU Schematic diagram；

Figure 26 is the flow diagram of the method for the first data provided in an embodiment of the present invention parsing；

Figure 27 is the flow diagram of the method for second of data provided in an embodiment of the present invention parsing；

Figure 28 is the flow diagram of the method for the third data provided in an embodiment of the present invention parsing；

Figure 29 is the flow diagram of the method for the 4th kind of data provided in an embodiment of the present invention parsing；

Figure 30 is the flow diagram of the method for the 5th kind of data provided in an embodiment of the present invention parsing；

Figure 31 is the flow diagram of the method for the 6th kind of data provided in an embodiment of the present invention parsing；

Figure 32 is the flow diagram of the method for the 7th kind of data provided in an embodiment of the present invention parsing；

Figure 33 is the structural schematic diagram of the device of the first Deta bearer provided in an embodiment of the present invention；

Figure 34 is the structural schematic diagram of the device of second of Deta bearer provided in an embodiment of the present invention；

Figure 35 is the structural schematic diagram of the device of the third Deta bearer provided in an embodiment of the present invention；

Figure 36 is the structural schematic diagram of the device of the 4th kind of Deta bearer provided in an embodiment of the present invention；

Figure 37 is the structural schematic diagram of the device of the first data provided in an embodiment of the present invention parsing；

Figure 38 is the structural schematic diagram of the device of second of data provided in an embodiment of the present invention parsing；

Figure 39 is the structural schematic diagram of the device of the 5th kind of Deta bearer provided in an embodiment of the present invention；

Figure 40 is the structural schematic diagram of the device of the third data provided in an embodiment of the present invention parsing.

Specific embodiment

Below in conjunction with the attached drawing in the present embodiment, the technical solution in the present embodiment is clearly and completely described, Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present invention Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all Belong to the scope of protection of the invention.

The embodiment of the invention provides a kind of method of Deta bearer, the method is applied to the transmission in optical transfer network End.Wherein, data signified in the embodiment of the present invention are mainly the CPRI mixed service for including at least two-way CPRI business.

The method of Deta bearer provided in an embodiment of the present invention, as shown in Figure 4, comprising:

101: receiving the road m common public radio interface CPRI business, wherein m is the integer greater than 1.

102: the road the m CPRI business received is mapped in a manner of one-to-one in the optical channel data tributary unit of the road m.

Wherein, the mapping mode can be BMP mapping (English: Bit Synchronous Mapping Procedure, referred to as: BMP), BGMP mapping (English: Bit-synchronous Generic Mapping Procedure, Referred to as: BGMP) or AGMP maps (English: Asynchronous Generic Mapping Procedure, abbreviation: AGMP), The mapping mode specifically used can be determined according to the type of CPRI business and clock source etc., be can refer to and be described in detail hereinafter.

1 road CPRI business is also mapped into 1 road ODTU by the signified process for being mapped as mapping one by one in this step. Thus the number of ODTU is identical as the number of CPRI business that CPRI mixed service to be lifted includes.

While being mapped, need to add mapping cost information, tool in time slot expense position JC1~JC6 of ODTU Body are as follows: handled for BGMP mapping, then CPRI data flow is mapped by ODTU by fixed Cm value, and add Cm information and arrive JC1~JC3；For AGMP mapping handle, then need the CPRI service traffics that real-time statistics are to be mapped, generate corresponding Cm value with And clock information CnD.Wherein, Cm value is used to indicate the quantity of the CPRI business to be lifted in the single ODTU period, unit For m bit；CnD value is used to indicate the CPRI business to be lifted in the single ODTU period relative in a upper ODTU period The variable quantity of the CPRI business to be lifted, unit is n-bit.Clock information CnD is for receiving end according to the clock information CnD restores original CPRI business clock and carries out CPRI business processing.

103: the road the m optical channel data tributary unit for carrying the CPRI business is multiplexed into optical channel Payload Unit In time slot.

In this step, the multichannel ODTU in step 102 is multiplexed into 1 road OPU.

Wherein, the rate of the time slot is equal to CPRI basic rate.The basic rate can be with times of the basic frame rate of CPRI Number.

According to CPRI protocol definition, the rate of the basic frame of CPRI is 3.84MHz.The basic frame of different types of CPRI business It is of different sizes, thus the rate of different types of CPRI business is not also identical.For example, the basic frame sign of CPRI Option 1 For 128bit, then corresponding rate is 491.52Mbit/s.

As a kind of optional implementation, the speed for the basic frame of CPRI that CPRI basic rate is 128 times in the present embodiment Rate namely the rate of CPRI option 1 are also 491.52Mbit/s (before 8B/10B coding) or 614.4Mbit/s (after 8B/10B coding).

For ease of description, it is hereinafter illustrated so that CPRI basic rate is the rate of CPRI option 1 as an example, Restriction is not brought to the application.

Following table table 1 gives before the rate coding of different types of CPRI business (CPRI option 1~8) and after coding Respectively with the corresponding relationship of CPRI basic rate (rate of CPRI option 1).

Table 1

The method of Deta bearer provided by the invention directly reflects the road n CPRI business after receiving the road n CPRI business Multiplexing is penetrated into OPU, re-maps multiplexing to high-order with, needing for CPRI business to be first mapped in low order ODU in the prior art It is compared in OPU, the present invention can realize the carrying of CPRI business using level-one mapping, can reduce because two-stage maps bring Time delay, and then can be realized the quick carrying of CPRI business.

Further, since eliminating the process that CPRI business is mapped to low order ODU, it is thus possible to reduce shared by low order ODU Bandwidth improves bandwidth availability ratio.

Inventor has found under study for action, the prior art there is also a problem are as follows: OPUk's in the prior art is single The rate of time slot is 1.25Gbit/s, and in the prior art when each CPRI business is passed through OTN transmission of network, there is also serious The problem of bandwidth waste.Such as: CPRI option1 business and 2 business of CPRI option are mapped to ODU0 in the first order When, there is no the payload rates for using ODU0 completely, and there are bandwidth wastes.Similarly, CPRI option3 business is reflected in the first order When being mapped to ODU1, there is no the payload rates for using ODU1 completely, and there are bandwidth wastes.

To solve the above-mentioned problems, the present invention has been provided in advance before carrying out Deta bearer comprising different time-gap Several OPU that is to say the OPU of different bandwidth, can choose required OPU according to the rate of multichannel CPRI business to be lifted. Thus, as the supplement of method shown in Fig. 4, the road the m CPRI business received " is mapped to m by step 101 in a manner of one-to-one In the optical channel data tributary unit of road " before, as shown in figure 5, the method also includes:

201: according to the rate of the rate of CPRI business described in every road and the single time slot, determining the road the m CPRI industry First quantity of time slot required for being engaged in.

In the specific implementation of this step, calculate mixing CPRI business to be lifted total rate and it is described single when The ratio of the rate of gap, if the ratio is integer value, the value of the first quantity is the ratio；If the ratio is non-integer Value, then the value being rounded after the ratio being added 1 is first quantity.

Such as: CPRI mixed service to be lifted be include 1 road CPRI option1,2 road CPRI option2 and 5 tunnels The mixed service of CPRI option4, then according to table 1 shown in different types of CPRI business and basic rate corresponding relationship, The basic rate that total rate of CPRI mixed service to be lifted is 1*1+2*2+5*5=30 times can be obtained.Thus determine to First quantity of the time slot of occupancy is 30.

202: choosing the optical channel Payload Unit of the time slot comprising first quantity.

In a kind of implementation of this step, the frame structure of the OPU chosen in this step is that the light of n times of scheduled rate is logical Road Payload Unit, the optical channel Payload Unit of the n times of scheduled rate by n optical channel Payload Unit logic branch (English: Optical Channel Payload Unit Logic Lane, referred to as: OPULL) formed according to preset byte interleaver. Its frame structure size is 4 row 3824n column.Wherein, the single optical channel Payload Unit logic branch includes overhead area and payload Area, payload section include the time slot of the second preset quantity.

The value of the n is determined according to the ratio of first quantity and the second quantity.The process specifically: seek first The ratio of quantity and the second preset quantity, if the ratio is integer value, using the integer value as of required OPULL Number；If the ratio is not integer value, the integer value being rounded after which is added 1 is as of required OPULL Number.

Such as: the timeslot number occupied needed for the road m CPRI business to be lifted is 120, the time slot that single OPULL is included Number is 24, then the number of required OPULL is 5, thus the OPU chosen is the OPU comprising 5 OPULL.When to be lifted CPRI business needed for occupy timeslot number be 55, the timeslot number that single OPULL is included be 24, then needed for OPULL Number be 3, thus choose OPU be the OPU comprising 3 OPULL.

The frame structure of the OPU, time slot divide visible to be described in detail hereinafter.

In another implementation of this step, when the frame structure of OPU is fixed size, as directly utilized existing skill The frame structure of the fixed size of 4 rows 3824 column of the OPU of art, then directly choose the OPU of the timeslot number comprising the first quantity. The process that is pre-configured with of this OPU is time slot division to be carried out to the frame structure of OPU, so that the size phase of the frame structure of difference OPU Together, but the timeslot number that includes is different, can choose the timeslot number for including and the first quantity most according to CPRI business to be lifted in this way The OPU of carrying that is close and can guaranteeing CPRI business.

The preconfigured above-mentioned OPU of the present invention can be brought the following benefits:

OPU provided by the invention include one or more rates be CPRI basic rate time slot, time slot granularity it is smaller and Timeslot number matches with CPRI business to be lifted.Thus CPRI business to be lifted can effectively utilize the embodiment of the present invention The bandwidth of the OPU of offer improves bandwidth availability ratio.

As illustrating to variable frame structure OPU signified in method shown in Fig. 5, which is n times of scheduled rate Optical channel Payload Unit, the OPU of the n times of scheduled rate include n OPULL, and the value of the n is according to the road the m CPRI industry The total bandwidth of business determines, the bandwidth of the single OPULL is the scheduled rate, and the size of the frame structure of single OPULL can be with Using size same as the prior art, also as 4 rows 3824 are arranged, and the single OPULL includes overhead area and payload section, expense Area includes the expense of the single OPULL, and payload section includes the time slot of the second preset quantity.

The optical channel Payload Unit of the n times of scheduled rate is by n optical channel Payload Unit logic branch according to predetermined word Section interleaver is formed, and specific interleaver refers to, the frame structure of the OPU includes overhead area and payload section, overhead area by According to preset byte, successively interleaver is formed for the overhead area of OPULL described in every road；The payload of payload section OPULL as described in every road According to the preset byte, successively interleaver is formed in area.

The research of practical CPRI service bearer process can be obtained according to inventor, the best bearer cap of single OPULL is about Between 10Gbit/s-12Gbit/s.Thus, if the rate for choosing single time slot is the 491.52Mbit/s before coding, Second preset quantity can be taken as 24, and the scheduled rate of corresponding single OPULL is about 12Gbit/s；Second preset quantity Value can also be 20, and the scheduled rate of corresponding single OPULL is about 10Gbit/s.If choosing the rate of single time slot For the 614.4Mbit/s after coding, then the second preset quantity can be taken as 20, and the scheduled rate of corresponding single OPULL is about 12Gbit/s。

When the bandwidth of single OPULL is 10G Gbit/s, the OPU being made of the road n OPULL can be named as OPUXn, Wherein " X " is Roman number, indicates 10G；When the bandwidth of single OPULL is 12Gbit/s, can will be made of the road n OPULL OPU be named as OPUXIIn, wherein " XII " be Roman number, indicate 12G.Wherein no matter 12G or 10G is one close Like the statement of value, accurate rate value is not represented.

In addition, similarly to the prior art, OPU increase ODU expense can be formed ODU, then can by the ODU increase overhead area OTU Form OTU.Following table table 2 is shown when the rate of single time slot is respectively 491.52Mbit/s and 614.4Mbit/s, The payload area rate of OPUXIIn and the rate of ODUXIIn/OTUXIIn.Compared with the payload area rate of OPUXIIn, why The rate of ODUXIIn/OTUXIIn is 239/238 times of the payload area rate of OPUXIIn, is because of ODUXIIn/OTUXIIn phase Additional 16n column overhead area is contained to the payload section OPUXIIn.

Table 2

For dividing 24 time slots, the frame structure and time slot for being illustrated in figure 6 single channel OPULL are divided, specifically: single channel The frame structure of OPULL be the 1st~4 row the 15th arrange to the 3824th column totally 4 row * 3810 arrange, including 15~16 column two column overhead area and ~3824 column of 17 column totally 3808 arrange payload section, wherein overhead area is for storage time slots expense, PSI and multi-frame instruction；In payload section It take granularity division as 24 time slots of single byte.It is the 24- multi-frame constituted with the above-mentioned OPULL of 24 frames shown in Fig. 6, each frame Structure is identical.

It should be noted that above-mentioned time slot granularity why be chosen for single byte be due to single time slot bandwidth not too much Greatly；If the bandwidth of single time slot is larger, such as: 2.5Gbit/s, then the time slot granularity of division of payload section can also be multiword Section.

On the basis of the frame structure and time slot of single channel OPULL shown in Fig. 6 divides, the road n OPULL can be passed through individual character Section or multibyte multiplexing, constitute 1 road overall signal namely 1 road OPU signal.It is illustrated in figure 7 and the road n OPULL is passed through into single byte It is multiplexed the frame structure of the OPU formed, (14n+1)~16n of specially the 1st~4 row is classified as the overhead area of OPU, by the road n OPULL Overhead area be multiplexed according to single byte, (16n+1)~3824n of the 1st~4 row is classified as the payload section of OPU, by the road n OPULL Payload section be multiplexed according to single byte.The corresponding payload section OPU (16n+1~3824n column) is divided into 24n time slot.When Gap number be TS A.B (wherein A be single channel OPULL signal number, value can be 1 ... n；B is each time slot in single channel OPULL Number, value 1 ... 24；Namely the time-gap number in OPU is 1.1,2.1 ..., and n.1,1.2,2.2 ..., until n.24).

It should be noted that Fig. 6 and Fig. 7 description when with the frame structure of single channel OPULL since the 15th column or The frame structure of OPU is arranged from 15n and is described, and is due to by arranging in preceding 14 column (single channel OPULL) or preceding 14n (by the road n OPULL structure At OPU) addition ODU expense, OTU expense, further may make up the frame structure of ODU frame and the frame structure of OTU frame.That is, with For the OPU be made of the road n OPULL, 1~7n of the 1st row is classified as frame head instruction expense, and (7n+1)~14n of the 1st row is classified as 1~14n of the overhead area of OTU, the 2nd~4 row is classified as the overhead area of ODU.

It should also be noted that, similar with the frame structure of traditional OTU, provided in an embodiment of the present invention includes the road n OPULL The frame structure of the OPU of composition, the OTU frame structure further constituted later can also be divided into including check field and not include check field Two classes.

In addition, if the bandwidth of single time slot to be set as to the 614.4Mbit/s after coding, then the list of same size can be used The frame structure of road OPULL, the bandwidth of single channel OPULL still value are 12Gbit/s or so, and distinctive points are only that the band of single time slot It is wide and the payload section of single channel OPULL is divided into 20 time slots rather than 24 time slots, it accordingly can be by 20 OPULL frames Form 20- multi-frame.Its specific implementation process and the bandwidth of single time slot are 491.52Mbit/s and the division 24 before encoding The process of time slot is similar, and this embodiment is not repeated.

In conjunction with above-mentioned time slot partition process, given as shown in Figure 8 when the OPU carrying multichannel mixing being made of the road n OPULL When business, time slot storage sequence.When practical application, need to carry out the carrying of CPRI business according to the time-slot sequence.

Such as: certain road CPRI business to be lifted needs to occupy tri- time slots of TS1.1, TS1.2, TS2.1, then its carrying is suitable Sequence is TS1.1, TS2.1, TS1.2.

As the supplement of method shown in Fig. 4, the timeslot number that includes in the payload section every road ODTU and corresponding CPRI business institute The timeslot number needed, thus in the specific implementation of step 102, need to calculate every road CPRI business rate and the list The ratio of the rate of a time slot, if the ratio be integer value, using the ratio value as road CPRI business it is corresponding when Gap number；If the ratio be non integer value, the value being rounded after which is added 1 as road CPRI business it is corresponding when Gap number.

Such as: CPRI business to be lifted be include 1 road CPRI option1,2 road CPRI option2 and 5 road CPRI The mixed service of option4, then according to table 1 shown in different types of CPRI business and basic rate corresponding relationship, can obtain The basic rate that bandwidth to CPRI option1 to be lifted is 1 times, then its corresponding first quantity is 1；Every road CPRI The basic rate that the bandwidth of option2 is 2 times, then corresponding first quantity of two-way CPRI option2 is respectively 2,2；Every road The bandwidth of CPRI option4 is 5 times of basic rate, then corresponding first quantity of 5 road CPRI option4 be respectively 5,5,5, 5、5。

As the refinement to method shown in Fig. 4, step 102 " reflects the road the m CPRI business received in a manner of one-to-one Be mapped in the optical channel data tributary unit of the road m ", can the clock source according to used by CPRI business to be lifted take corresponding reflect Shooting method, as shown in figure 9, the process specifically includes:

301: CPRI business described in the first via is determined as reference clock business, the first via CPRI business be it is described extremely In few two-way CPRI business it is any all the way.

Such as: it can choose minimum speed limit CPRI business as reference clock business.

302: the CPRI business of identical clock source is used by the reference clock business and with the reference clock business It maps regulation by bit synchronous or synchronizes general mapping regulation and be mapped into the optical channel data branch list correspondingly In member.

303: regulation will be mapped by async-generic using the CPRI business in different clocks source with the reference clock business It is mapped into the optical channel data tributary unit correspondingly.

As the refinement of method shown in Fig. 4, " road the m optical channel data branch of the CPRI business will be carried in step 103 In the unit multiplexed time slot to optical channel Payload Unit in road " while, it is also necessary to increase payload structure instruction (English: payload Structure identifier, referred to as: PSI) specifying information comprising payload type instruction (English: payload Type, referred to as: PT) and multiplexing structure instruction (English: Multiplex structure identifier abbreviation: MSI).Its In, the business that PT is used to indicate current OPU payload area carrier is CPRI mixed service；MSI is used to indicate each time slot of OPU Carry situation, such as the occupancy situation of each time slot, if some time slot is occupied, the CPRI business of time slot carrying or The type and CPRI business or the identification number of CPRI service groups etc. of CPRI service groups.The corresponding addition payload structure refers to Show, as shown in Figure 10, specifically include:

401: increasing payload type in the value of multi-frame instruction for the overhead area of the frame structure of 0 optical channel Payload Unit and refer to Show, the payload type instruction is for indicating that the type of service that the optical channel Payload Unit currently carries is multichannel CPRI industry Business.

Indicate that OPU currently mixes carrying multichannel CPRI service conditions by payload type PT=0x23.

When including n OPULL in the frame structure of 1 OPU, and the frame structure of 256 OPU composition, 1 256- is answered When frame, as Figure 11 shows the complete frame structure (dotted line above shown in) of 1 above-mentioned OPU, and by the frame of 256 OPU The corresponding Section Overhead area of each frame of the 256- multi-frame of structure composition (shown in below dotted line)；Wherein, signified Section Overhead Area refers to that illustrate only each frame is located at the 4th row 14n+1 column~15n overhead area of totally 1 row n column namely each frame The information of the part PSI specifically stored.Wherein 0~255 indicated for the number namely multi-frame of each OPU frame.

Wherein, payload type PT signified in this step is located at the overhead area for the OPU for being 0 in the value that multi-frame indicates, namely The PSI of corresponding 1st OPULL of frame structure for the OPU that the value of multi-frame instruction is 0 is PT；RES indicates reserved bit.

402: in the expense of the frame structure of the optical channel Payload Unit for the maximum value that the value of multi-frame instruction indicates for 2 to multi-frame Area increase multiplexing structure instruction, two adjacent frames multiplexing structure instruction for indicate whether current time slots occupied, it is current when The mark of CPRI type of service, CPRI business or CPRI service groups that gap carries.

As shown in figure 11, from multi-frame indicate value be 2 to multi-frame indicate value be 255, deposited in the PSI of totally 254 OPU frames Multiplexing structure instruction expense MSI is stored up, every frame carries n multiplexing structure and indicates expense, for indicating the occupancy feelings of each time slot Condition etc..

Such as: the 2nd to 2x+1 frame carries MSI [A.2] respectively, MSI [A.3] ..., and MSI [A.2x+1] is used to indicate TSA.1, TSA.2 ..., TSA.x occupancy situation, wherein A=1~n, is number of the corresponding OPULL in OPU；1,2,…,x For the time-gap number in current OPULL.

It is used to indicate the occupancy situation of same time slot in conjunction with Figure 11, Figure 12 two neighboring MSI for showing adjacent two frame, holds The concrete meanings such as the CPRI service conditions of load.Specifically: the occupancy situation of a time slot is indicated by every 2 bytes.Wherein, preceding The 1bit of one frame indicates whether the time slot is occupied, and 0 indicates to occupy, and 1 indicates idle；The total 4bit expression of 2bit-5bit is held The CPRI type of service of load, such as 0000 expression CPRI Option1,0001 indicates CPRI Option 2 ..., and 0111 indicates CPRI Option 8,1000~1111 CPRI types of service for being left the following higher rate use, such as CPRI Option 9 etc.；Totally 11 bits indicate CPRI traffic ID or CPRI industry to 6~8bit of the former frame and 8bit of a later frame Business group ID.For CPRI service groups situation, the number of timeslots occupied by the corresponding CPRI service groups and CPRI type of service Know the CPRI number of services that the CPRI service groups are included.

In order to improve load-carrying efficiency, management complexity is reduced, as the supplement to method shown in Fig. 4, step 102 " will be connect The road the m CPRI business received is mapped in a manner of one-to-one in the optical channel data tributary unit of the road m " before, as shown in figure 13, The process that the method also includes being grouped to CPRI business to be lifted only needs multiplexed to 1 group after being multiplexed in this way CPRI business carries out Centralized Monitoring and management, the process specifically:

501: will identical at least CPRI business is determined as one group of business all the way using identical clock source and type of service.

502: if it is determined that one group of business in include at least two-way CPRI business, then will at least two-way CPRI industry Business bit or byte are multiplexed with serial bit stream all the way.

Certainly, it for containing only the group of 1 road CPRI business, is then multiplexed without bit or byte.

After the completion of to CPRI traffic packets, the carrying of CPRI business can be carried out according to step 102 to step 103.

Wherein, serial bit stream can regard CPRI business all the way as all the way.

If Figure 14 is by multichannel CPRI business according to the specific carrying after the grouping of the process of above-mentioned steps 501 and step 502 Process schematic.Wherein, by m₁Road uses identical clock source and the identical CPRI service integration of type of service with reference clock source For 1 road CPRI business, a routing ts is then mapped to using the mapping mode of BMP or BGMP again₁In the ODTU of a time slot composition (with ODTU.ts in figure₁It shows)；Similarly, by m₂Road uses identical clock source and the identical CPRI service integration of type of service for 1 Road CPRI business uses the mapping mode of AGMP to be mapped to a routing ts again₂(with ODTU.ts in figure in the ODTU of a time slot composition₂ It shows)；By m_iRoad uses identical clock source and the identical CPRI service integration of type of service uses AGMP for 1 road CPRI business again Mapping mode be mapped to a routing ts_i(with ODTU.ts in figure in the ODTU of a time slot composition_iShow) in；Again by multichannel ODTU It is multiplexed into 1 road OPU.

As the refinement to method shown in Fig. 4, since the rate of single time slot before encoding is relative to smaller after coding, thus It can be the bandwidth before CPRI Option1 coding by the bandwidth of single time slot in the optical channel Payload Unit, namely 491.52Mbit/s；And CPRI business to be lifted is generally the business after encoding, thus need to CPRI business to be lifted It is decoded processing first.Thus, the road the m CPRI business received " is mapped to the road m light by step 102 in a manner of one-to-one In channel data tributary unit " before, as shown in figure 15, the method also includes:

601: the road the m CPRI business to be lifted being decoded, the decoded road the m CPRI business is obtained.

The decoding process is the inverse process with coding mode shown in table 1.Different types of CPRI industry can be obtained after decoding Business, following table table 3 give the codeword size and basic frame that the corresponding basic frame of CPRI of different types of CPRI business is included Size:

Table 3

The basic frame sign of various types of CPRI business according to shown in table 3 and basic frame rate are every kind available The rate of the CPRI business of type, is consistent with shown in table 1

Further, since being decoded to CPRI business to be lifted, thus need to increase pointer overhead information to indicate Position of the start frame of CPRI business in ODTU.Thus, as the refinement of method shown in Fig. 4, " will be received in step 102 The road m CPRI business be mapped in the optical channel data tributary unit of the road m in a manner of one-to-one " while, as shown in figure 16, institute State method further include:

701: generating pointer overhead information corresponding with CPRI business described in every road respectively, the pointer overhead information is used for Indicate the start frame of CPRI business described in decoded every road in the position of the corresponding optical channel data tributary unit.

702: respectively storing the pointer overhead information to the overhead area of corresponding optical channel data tributary unit.

In this step in the specific implementation, the basic frame of continuous 256 CPRI forms a CPRI superframe, CPRI superframe The basic frame of first frame CPRI namely start frame, record the start frame the position of ODTU and generate pointer overhead information (English: Basic Frame Pointer, referred to as: BFP).

Wherein, pointer overhead information can be placed in the overhead area of ODTU, be that each time slot of ODTU divides 2 as shown in figure 17 A byte is the overhead area of each time slot, if ODTU includes ts time slot, corresponding overhead area includes 2*ts word in total Section, can be used for placing pointer overhead information；Remaining part is then the payload section for mapping the CPRI business.In addition, also showing in figure The JC1 to JC6 for placing mapping cost is gone out, has indicated that ODTU is made of ts time slot in figure with ODTU.ts.

As the replacement of step 702, the pointer overhead information can also be stored to the optical channel payload list respectively In the multiplexing structure instruction of member.As shown in figure 18, which includes:

801: generating pointer overhead information corresponding with CPRI business described in every road respectively, the pointer overhead information is used for Indicate the start frame of CPRI business described in decoded every road in the position of the corresponding optical channel data tributary unit.

802: respectively storing the pointer overhead information into the multiplexing structure instruction of the optical channel Payload Unit.

As shown in figure 19, based on 256 multi-frames being made of 256 frame OPU, pointer overhead information is placed in MSI.This feelings Under condition, compared with corresponding two bytes of time slot each in Figure 12, corresponding 4 bytes of each time slot, the first two byte are same at this time It is used to indicate the occupied situation of the TS；Latter two byte is for placing pointer overhead information.It in this way can be directly by CPRI business It is mapped into the entire payload section of ODTU.

In addition, it is described for placing the part (overhead area of ODTU or the MSI of OPU) of pointer overhead, it is also used to add and prolong When measure expense, the Time delay measurement expense is used to record the equipment inter-process and line transmission delay of CPRI frame.

CPRI is indicated in addition to the mode of the above-mentioned overhead area in ODTU or the overhead area of OPU increase pointer overhead information The position of start frame can also increase the position that frame head indicates expense to indicate CPRI start frame by the start frame for CPRI business It sets.Then " road the m CPRI business received is mapped to the road m optical channel data branch list in a manner of one-to-one in step 102 Before member ", as shown in figure 20, the method also includes:

901: adding CPRI start frame frame headers overhead corresponding with every road CPRI business, the CPRI start frame frame head respectively Expense includes at least the start frame for the CPRI business described in every road that is used to indicate in the corresponding optical channel data tributary unit The frame head of position indicates information.

This step executes after step 601, naturally it is also possible to not execute step 601.

It does not enter the CPRI business that optical transfer network is carried also to be carried by the basic frame of CPRI, 256 CPRI are basic Frame constitutes a CPRI superframe, and first basic frame of CPRI in CPRI superframe can be referred to as CPRI start frame, every road CPRI again The corresponding one or more continuous CPRI superframes of business.

Wherein, which specifically may include the instruction of CPRI start frame frame head, check information and propagation delay time and surveys Measure expense etc..As shown in figure 21,8 byte overhead information are contained before each 256-CPRI superframe, includes 4 byte CPRI superframe frames Head instruction (such as 0xf6f62828), the BIP8 verification of 1 byte, delay measurements the expense LC1 and LC2 of 2 bytes, 1 byte is to protect It writes down characters section.

As shown in figure 22, the CPRI superframe data flow for being added to frame headers overhead is directly mapped into ODTU.

Corresponding to three kinds of modes shown in Figure 16, Figure 18 and Figure 20, the rate of OTUXIIn can further Precise Representation be such as Shown in table 4.Wherein mode one opens due to increasing the overhead area of 2n byte in ODTU original payload section for placing pointer Sell information, the corresponding 2 byte overhead areas of each time slot, so passing through (15232/15230)²* 491.52Mbit/s is calculated Bandwidth of the value as time slot；Mode two, since pointer overhead information is placed in the overhead area OPU, and vacant ODTU is original Payload section, so primary bandwidth of the value being calculated by (15232/15230) * 491.52Mbit/s as time slot；Side Formula three, due to directly increasing 8 byte frame headers overhead information on the basis of each CPRI superframe, so selection 492.5Mbit/ Primary bandwidth of the s as time slot, opposite 491.52Mbit/s improve a point velocity, guarantee that ODTU can be carried and have added CPRI superframe The CPRI business of frame head instruction information.

Table 4

It should be noted that if the bandwidth of single time slot is set as the bandwidth before CPRI Option 1 is encoded in OPU (614.4Mbit/s) is used to indicate CPRI business pair without increase accordingly then without being decoded processing to CPRI business The pointer overhead or frame headers overhead of the location information for the CPRI start frame answered.

It is only that OTU frame structure could be sent out by transmitting terminal by data final encapsulation during actual Deta bearer To receiving end.Thus, as the supplement of method shown in Fig. 4, " road the m optical channel of the CPRI business will be carried in step 103 Data tributary unit is multiplexed into the time slot of optical channel Payload Unit " after, as shown in figure 23, the method also includes:

1001: the optical channel Payload Unit for having carried the road m CPRI business addition optical channel transmission unit is opened Pin constitutes optical channel transmission unit.

It is a kind of point-to-point biography since CPRI business to be lifted is to be sent between RRU/BBU by BBU/RRU It is defeated, thus ODU Overhead need not be increased, it can directly increase OTU expense and form OTU.

It is of course also possible to be further added by OTU expense after increasing ODU expense formation ODU and form OTU, thus as step 1001 Replacement, as shown in figure 24, the method also includes:

1101: the optical channel Payload Unit for having carried the road m CPRI business addition Optical Channel Data Unit-k is opened Pin constitutes Optical Channel Data Unit-k.

1102: Optical Channel Data Unit-k being added into optical channel transmission unit expense, constitutes optical channel transmission unit.

It is after encoding with the bandwidth of single time slot as shown in figure 25 as the concrete application of the above method For 614.4Mbit/s, the embodiment of the invention provides a kind of specific mapping process.If CPRI business to be lifted includes Each 1 tunnel CPRI3, CPRI7, CPRI8.Basic rate building OPU progress Deta bearer after then being encoded based on CPRI, then about 40 times Basic rate, thus include 40 time slots.

Wherein, CPRI3 occupies wherein 4 time slots, such as: TS1.1, TS2.1, TS1.8, TS2.8；CPRI7 is occupied wherein 16 time slots, such as TS1.3, TS1.4, TS1.5, TS1.6, TS1.7, TS1.9, TS1.10, TS1.11, TS1.12, TS1.13, TS1.14,TS1.15,TS1.16,TS1.17,TS1.18,TS1.19,；CPRI8 occupies wherein 20 time slots, such as TS2.1, TS1.2,TS2.2,TS2.3,TS2.4,TS2.5,TS2.6,TS2.7,TS2.8,TS2.9,TS2.10,TS2.11,TS2.12, TS2.13,TS2.14,TS2.15,TS2.16,TS2.17,TS2.18,TS2.19,TS1.20,TS2.20。

It is corresponding with the Deta bearer process of transmitting terminal, the embodiment of the invention also provides a kind of data parsing method, The method is applied to the receiving end in optical transfer network, as shown in figure 26, which comprises

1201: the information carried according to the overhead area of the optical channel Payload Unit obtains the optical channel Payload Unit The type of service of carrying.

1202: when the type of service be include the CPRI mixed service of the road m CPRI business when, it is determining with the road m The one-to-one road the m optical channel data tributary unit of CPRI business.

1203: according to the mapping cost information carried in optical channel data tributary unit described in every road, to every road optical channel Data tributary unit carries out demapping processing, obtains the corresponding basic frame of at least two CPRI of every road CPRI business.

1204: obtaining the location information of the corresponding CPRI start frame of CPRI business described in every road, obtain from the CPRI The basic frame of all CPRI that beginning frame starts, the CPRI start frame are first basic frame of CPRI.

The method of data parsing provided in an embodiment of the present invention, it is corresponding with the method for the Deta bearer of transmitting terminal, it is only necessary to A demapping is wanted, time delay required for demapping can be reduced, it is thus possible to realize that the efficient of CPRI business quickly mentions It takes.

Wherein, the refinement as method shown in Figure 26, step 1201 " are taken according to the overhead area of the optical channel Payload Unit The information of band obtains the type of service of the optical channel Payload Unit carrying ", as shown in figure 27, specifically include:

1301: the payload type instruction information that the overhead area of the optical channel Payload Unit carries is obtained, according to described net Lotus type indication information obtains the type of service of the optical channel Payload Unit carrying.

Wherein, the refinement as method shown in Figure 26, step 1202 " the determining and one-to-one n of the road the m CPRI business Road optical channel data tributary unit ", as shown in figure 28, specifically includes:

1401: the payload structure instruction information that the overhead area of the optical channel Payload Unit carries is obtained, according to described net Lotus structure instruction information obtain the optical channel Payload Unit whether each time slot occupied and the carrying of occupied time slot CPRI business type and CPRI business mark.

1402: according to whether each time slot of the optical channel Payload Unit occupied and the carrying of occupied time slot The type of CPRI business and the mark of CPRI business, identification and the one-to-one road the m optical channel data branch of the road the m CPRI business Road unit.

Wherein, the refinement as method shown in Figure 26, step 1203 is " according in optical channel data tributary unit described in every road The mapping cost information of carrying carries out demapping processing to every road optical channel data tributary unit, obtains every road CPRI business pair The basic frame of at least two CPRI answered ", as shown in figure 29, specifically includes:

1501: according to the mapping cost information carried in optical channel data tributary unit described in every road, obtaining corresponding every The clock source information of road CPRI business.

1502: if the CPRI business is the reference clock business or uses with the reference clock business identical The CPRI business of clock source then maps regulation by bit synchronous or synchronizes general mapping regulation to corresponding optical channel data Tributary unit carries out demapping processing.

1503: if the CPRI business is to use the CPRI business in different clocks source with the reference clock business, Regulation is mapped by async-generic, and demapping processing is carried out to corresponding optical channel data tributary unit.

As the refinement of method shown in Figure 26, " the corresponding CPRI starting of CPRI business described in every road is obtained in step 1204 The location information of frame " specially obtains the corresponding pointer overhead information of every road CPRI business, obtains CPRI business pair described in every road The location information for the CPRI start frame answered.In turn, step 1204 " obtains the corresponding CPRI start frame of CPRI business described in every road Location information obtains the basic frame of all CPRI since the CPRI start frame ", as shown in figure 30, specifically include:

1601: obtaining the corresponding pointer overhead information of every road CPRI business, it is corresponding to obtain CPRI business described in every road The location information of CPRI start frame, and then the basic frame of all CPRI since the CPRI start frame is obtained, the CPRI rises Beginning frame is first basic frame of CPRI.

Or in step 1204 " location information for obtaining the corresponding CPRI start frame of CPRI business described in every road ", specially It identifies the corresponding CPRI start frame frame headers overhead of every road CPRI business, obtains the corresponding CPRI start frame of CPRI business described in every road Location information.In turn, step 1204 " obtains the location information of the corresponding CPRI start frame of CPRI business described in every road, obtains The basic frame of all CPRI since the CPRI start frame ", as shown in figure 31, specifically includes:

1701: identifying the corresponding CPRI start frame frame headers overhead of every road CPRI business, obtain CPRI business pair described in every road The location information for the CPRI start frame answered, and then the basic frame of all CPRI since the CPRI start frame is obtained, it is described CPRI start frame is first basic frame of CPRI.

As the supplement of method shown in Figure 26, step 1204 " obtains the corresponding CPRI start frame of CPRI business described in every road Location information, obtain the basic frame of all CPRI since the CPRI start frame " after, as shown in figure 32, the method Further include:

1801: the corresponding all basic frames of CPRI of the CPRI business described in every road carry out coded treatment.

During the specific implementation of this step, if transmitting terminal has carried out decoding process to original CPRI business, with Transmitting terminal is opposite, and receiving end needs to carry out CPRI business coded treatment, such as: CPRI option1-7 business carries out 8B/10B Coding mode, CPRI option8 business carry out 64B/66B coded treatment.

Furthermore, it is necessary to supplement, if transmitting terminal be grouped and map according to grouping to CPRI business, It needs to carry out bit or byte demultiplexing process to every group of multichannel CPRI serial bit stream that demapping goes out, obtains multichannel CPRI industry Business.

The specific implementation of each method as above-mentioned Deta bearer, the embodiment of the invention also provides a kind of Deta bearers Device, described device be applied to optical transfer network in transmitting terminal, as shown in figure 33, described device includes:

Receiving unit 101, for receiving the road m common public radio interface CPRI business, wherein m is the integer greater than 1.

Map unit 102, the road the m CPRI business for will receive are mapped to the road m optical channel number in a manner of one-to-one According in tributary unit.

Multiplexing Unit 103 leads to for the road the m optical channel data tributary unit for carrying the CPRI business to be multiplexed into light In the time slot of road Payload Unit；

Wherein, the rate of the time slot is equal to CPRI basic rate.

Further, as shown in figure 34, described device further includes processing unit 201, is used for the CPRI industry according to every road The rate of the rate of business and the single time slot, determines the first quantity of time slot required for the road the m CPRI business；

Further, the optical channel Payload Unit that the processing unit 201 is chosen is the optical channel of n times of scheduled rate Payload Unit, the optical channel Payload Unit of the n times of scheduled rate is by n optical channel Payload Unit logic branch according to predetermined word Section interleaver is formed；

Further, the map unit 102, is specifically used for: CPRI business described in the first via is determined as reference clock Business, the first via CPRI business be in at least two-way CPRI business it is any all the way；

Further, the Multiplexing Unit 103, is also used to:

Further, as shown in figure 35, described device further includes grouped element 301, is specifically used for:

Further, the bandwidth before the bandwidth of single time slot encodes in the optical channel Payload Unit for CPRI option 1；Such as Shown in Figure 36, described device further includes decoding unit 401, for being decoded to the road the m CPRI business to be lifted, is obtained The decoded road the m CPRI business.

Further, the map unit 102, is also used to:

The pointer overhead information is stored to the overhead area of corresponding optical channel data tributary unit respectively；

Further, the map unit 102 is also used to generate pointer corresponding with CPRI business described in every road respectively and opens Information is sold, the pointer overhead information is used to indicate the start frame of CPRI business described in decoded every road in the corresponding light The position of channel data tributary unit；

Further, the processing unit 201 is also used to add CPRI start frame corresponding with every road CPRI business respectively Frame headers overhead, the CPRI start frame frame headers overhead include at least the start frame for the CPRI business described in every road that is used to indicate in correspondence The optical channel data tributary unit position frame head indicate information.

Further, the Multiplexing Unit 103 is also used to the optical channel for having carried the road the m CPRI business is net Lotus unit adds optical channel transmission unit expense, constitutes optical channel transmission unit；

Or

The optical channel Payload Unit for having carried the road the m CPRI business is added into Optical Channel Data Unit-k expense, structure At Optical Channel Data Unit-k；Optical Channel Data Unit-k is added into optical channel transmission unit expense, constitutes optical channel transmission unit.

The device of Deta bearer provided by the invention directly reflects the road n CPRI business after receiving the road n CPRI business Multiplexing is penetrated into OPU, re-maps multiplexing to high-order with, needing for CPRI business to be first mapped in low order ODU in the prior art It is compared in OPU, the present invention can realize the carrying of CPRI business using level-one mapping, can reduce because two-stage maps bring Time delay, and then can be realized the quick carrying of CPRI business.

As the concrete application of above-mentioned data analysis method, the embodiment of the invention also provides the device of data parsing, institutes The receiving end that device is applied in optical transfer network is stated, includes optical channel Payload Unit in the optical transfer network, the optical channel is net Lotus unit includes at least one time slot, and the bandwidth of the single time slot is common public radio interface CPRI basic rate, is such as schemed Shown in 37, described device includes:

It is logical to obtain the light for acquiring unit 601, the information for being carried according to the overhead area of the optical channel Payload Unit The type of service of road Payload Unit carrying.

Determination unit 602, for when the type of service be include the CPRI mixed service of the road m CPRI business when, determine With the one-to-one road the m optical channel data tributary unit of the road the m CPRI business.

De-mapping unit 603, the mapping cost information for being carried in the optical channel data tributary unit according to every road, Demapping processing is carried out to every road optical channel data tributary unit, it is basic to obtain corresponding at least two CPRI of every road CPRI business Frame.

The acquiring unit 601 is also used to obtain the location information of the corresponding CPRI start frame of CPRI business described in every road, The basic frame of all CPRI since the CPRI start frame is obtained, the CPRI start frame is first basic frame of CPRI.

Further, the acquiring unit 601, is specifically used for:

Further, the determination unit 602, is specifically used for:

Further, the de-mapping unit 603, is specifically used for:

Further, the acquiring unit 601, is specifically also used to:

Or

Further, as shown in figure 38, described device further include: coding unit 701 is used for the CPRI business described in every road The corresponding basic frame of all CPRI carries out coded treatment.

The device of data parsing provided by the invention, it is corresponding with the method for the Deta bearer of transmitting terminal, it is only necessary to primary Demapping can reduce time delay required for demapping, it is thus possible to realize the efficient rapidly extracting of CPRI business.

The specific implementation of method as above-mentioned Deta bearer, the embodiment of the invention also provides a kind of dresses of Deta bearer It sets, described device is applied to the transmitting terminal in optical transfer network, described device, as shown in figure 39, including receiver 801, memory 802, processor 803, transmitter 804 and bus 805, receiver 801, memory 802, processor 803 and transmitter 804 pass through Bus 805 connects, in which:

Receiver 801, for receiving the road m common public radio interface CPRI business, wherein m is the integer greater than 1.

Memory 802, for that the road the m CPRI business received will be mapped to the road m optical channel number in a manner of one-to-one According in tributary unit.

Memory 802 is also used to the road the m optical channel data tributary unit for carrying the CPRI business being multiplexed into light and lead to In the time slot of road Payload Unit；Wherein, the rate of the time slot is equal to CPRI basic rate.

Further, the processor 803, for the rate of CPRI business according to every road and the single time slot Rate determines the first quantity of time slot required for the road the m CPRI business；

Further, the optical channel Payload Unit that the processor 803 is chosen is that the optical channel of n times of scheduled rate is net Lotus unit, the optical channel Payload Unit of the n times of scheduled rate is by n optical channel Payload Unit logic branch according to preset byte Interleaver is formed；The single optical channel Payload Unit logic branch includes overhead area and payload section, and payload section includes second The time slot of preset quantity；The value of the n is determined according to the ratio of first quantity and the second quantity.

Further, the processor 803 is also used to CPRI business described in the first via being determined as reference clock business, The first via CPRI business be in at least two-way CPRI business it is any all the way.

The memory 802 is also used to by the reference clock business and with the reference clock business using identical The CPRI business of clock source maps regulation by bit synchronous or synchronizes described in general mapping regulation is mapped into correspondingly In optical channel data tributary unit；

Further, the memory 802, the optical channel Payload Unit for being 0 also particularly useful for the value indicated in multi-frame The overhead area of frame structure increases payload type instruction, and the payload type instruction is for indicating that the optical channel Payload Unit is current The type of service of carrying is multichannel CPRI business；

Further, the processor 803 is also used to: will use identical clock source and type of service is identical at least all the way CPRI business is determined as one group of business；

Further, the bandwidth before the bandwidth of single time slot encodes in the optical channel Payload Unit for CPRI option 1；Institute Processor 801 is stated, is also used to be decoded the road the m CPRI business to be lifted, obtains the decoded road the m CPRI industry Business.

Further, the memory 802 is also used to generate pointer overhead corresponding with CPRI business described in every road respectively Information, the start frame that the pointer overhead information is used to indicate CPRI business described in decoded every road are logical in the corresponding light The position of track data tributary unit；

Further, the processor 803 is also used to add CPRI start frame frame corresponding with every road CPRI business respectively Header overhead, the CPRI start frame frame headers overhead include at least the start frame for the CPRI business described in every road that is used to indicate corresponding The frame head of the position of the optical channel data tributary unit indicates information.

Further, the memory 802 is also used to overhead area or the light in the optical channel data tributary unit Time delay measurement expense is added in the multiplexing structure instruction of channel Payload Unit.

Further, the memory 802 is also used to that the optical channel payload of the road the m CPRI business will have been carried Unit adds optical channel transmission unit expense, constitutes optical channel transmission unit；

Or

The optical channel transmission unit that the transmitter 804 is used to carry CPRI business is sent out by optical fiber to transmitting terminal It send.

Required code in 803 implementation procedure of processor is also stored in the memory 802.

The concrete application of method as the parsing of above-mentioned data, the embodiment of the invention also provides a kind of dresses of data parsing It sets, the method is applied to the receiving end in optical transfer network, described device, as shown in figure 40, including receiver 901, processor 902, memory 903 and bus 904, receiver 901, processor 902, memory 903 are connected by bus 904, in which:

The receiver 901, for receiving the optical channel transmission unit for carrying CPRI business of transmitting terminal transmission.

The processor 902, for parsing the available optical channel Payload Unit of the optical channel transmission unit.

The processor 902 is also used to the information carried according to the overhead area of the optical channel Payload Unit, described in acquisition The type of service of optical channel Payload Unit carrying；

Further, the processor 901 is also used to obtain the payload that the overhead area of the optical channel Payload Unit carries Type indication information indicates information according to the payload type, obtains the type of service of the optical channel Payload Unit carrying.

Further, the processor 901 is also used to obtain the payload that the overhead area of the optical channel Payload Unit carries Structure indicates information, and whether each time slot for obtaining the optical channel Payload Unit according to payload structure instruction information is occupied With and occupied time slot carrying CPRI business type and CPRI business mark；

According to whether each time slot of the optical channel Payload Unit occupied and the CPRI of occupied time slot carrying The type of business and the mark of CPRI business identify the optical channel data branch for having identical number with the road the m CPRI business Unit.

Further, the processor 901, be also used to carry in the optical channel data tributary unit according to every road reflects Overhead is penetrated, the clock source information of corresponding every road CPRI business is obtained；

Further, the processor 901 is also used to obtain the corresponding pointer overhead information of every road CPRI business, obtains The location information of the corresponding CPRI start frame of CPRI business described in every road.

Or

Further, the processor 901, be also used to the corresponding all basic frames of CPRI of the CPRI business described in every road into Row coded treatment.

The memory 903 is also used to required code in 902 implementation procedure of storage processor.

It, can also be with it should be noted that processor 803 and 902 described in the embodiment of the present invention can be a processor It is the general designation of multiple processing elements.For example, the processor 801 and 901 can be central processing unit (Central Processing Unit, abbreviation CPU), it is also possible to specific integrated circuit (Application Specific Integrated Circuit, letter Claim ASIC), or be arranged to implement one or more integrated circuits of the embodiment of the present invention, such as: it is one or more micro- Processor (digital signal processor, abbreviation DSP), or, one or more field programmable gate array (Field Programmable Gate Array, abbreviation FPGA).

Memory 802 and 903 can be a storage device, be also possible to the general designation of multiple memory elements, and for depositing Store up executable program code etc..And memory 802 and 903 may include random access memory (RAM), also may include non-volatile Memory (non-volatile memory), such as magnetic disk storage, flash memory (Flash) etc..

Bus 805 and bus 904 can be industry standard architecture (Industry Standard Architecture, ISA) bus, external equipment interconnection (Peripheral Component, PCI) bus or extension industry mark Quasi- architecture (Extended Industry Standard Architecture, EISA) bus etc..The bus 805 and 904 Address bus, data/address bus, control bus etc. can be divided into.Only to be indicated with a thick line in Figure 39 and Figure 40 convenient for indicating, It is not intended that only a bus or a type of bus.

Through the above description of the embodiments, it is apparent to those skilled in the art that the present invention can borrow Help software that the mode of required common hardware is added to realize, naturally it is also possible to which the former is more preferably by hardware, but in many cases Embodiment.Based on this understanding, the portion that technical solution of the present invention substantially in other words contributes to the prior art Dividing can be embodied in the form of software products, which stores in a readable storage medium, such as count The floppy disk of calculation machine, hard disk or CD etc., including some instructions are used so that computer equipment (it can be personal computer, Server or the network equipment etc.) execute method described in each embodiment of the present invention.

The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain Lid is within protection scope of the present invention.

Claims

1. a kind of method of Deta bearer, which is characterized in that the described method includes:

The road the m optical channel data tributary unit for carrying the CPRI business is multiplexed into the time slot of optical channel Payload Unit；

Wherein, the rate of the time slot is equal to CPRI basic rate.

2. the method according to claim 1, wherein

Before the road the m CPRI business that will be received is mapped in a manner of one-to-one in the optical channel data tributary unit of the road m, The method also includes:

According to the rate of the rate of CPRI business described in every road and the single time slot, determine required for the road the m CPRI business Time slot the first quantity；

3. according to the method described in claim 2, it is characterized in that, the optical channel Payload Unit chosen is n times of default speed The optical channel Payload Unit of rate, the optical channel Payload Unit of the n times of scheduled rate is by n optical channel Payload Unit logic branch It is formed according to preset byte interleaver；

The single optical channel Payload Unit logic branch includes overhead area and payload section, and payload section includes the second preset quantity The time slot；

4. according to the method described in claim 3, it is characterized in that,

The scheduled rate is 10Gbit/s or 12Gbit/s.

5. method according to claim 1-4, which is characterized in that the road the m CPRI business that will be received with One-to-one mode is mapped in the optical channel data tributary unit of the road m, is specifically included:

CPRI business described in the first via is determined as reference clock business, the first via CPRI business is at least described in two-way In CPRI business it is any all the way；

Bit is passed through using the CPRI business of identical clock source by the reference clock business and with the reference clock business Synchronization map regulation synchronizes general mapping regulation and is mapped into the optical channel data tributary unit correspondingly；

It is corresponded regulation is mapped by async-generic using the CPRI business in different clocks source with the reference clock business Be mapped into the optical channel data tributary unit.

6. method according to claim 1-4, which is characterized in that the m that the CPRI business will be carried While road optical channel data tributary unit is multiplexed into the time slot of optical channel Payload Unit, the method also includes:

Increase payload type instruction in the value of multi-frame instruction for the overhead area of the frame structure of 0 optical channel Payload Unit, it is described net The instruction of lotus type is for indicating that the type of service that the optical channel Payload Unit currently carries is multichannel CPRI business；

Increase in the overhead area of the frame structure of the optical channel Payload Unit for the maximum value that the value of multi-frame instruction indicates for 2 to multi-frame multiple It is indicated with structure, the multiplexing structure instruction of two adjacent frames is for indicating whether current time slots are occupied, current time slots carry The mark of CPRI type of service, CPRI business or CPRI service groups.

7. method according to claim 1-4, which is characterized in that the road the m CPRI business that will be received with Before one-to-one mode is mapped in the optical channel data tributary unit of the road m, the method also includes:

If it is determined that one group of business in include at least two-way CPRI business, then will at least two-way CPRI service bits or Byte is multiplexed with serial bit stream all the way.

8. method according to claim 1-4, which is characterized in that single time slot in the optical channel Payload Unit Bandwidth be CPRI option 1 encode before bandwidth；

CPRI business described at least two-way is respectively mapped to the optical channel number for having identical number with the CPRI business Before in tributary unit, the method also includes:

9. method according to claim 1-4, which is characterized in that the road the m CPRI business that will be received with While one-to-one mode is mapped in the optical channel data tributary unit of the road m, the method also includes:

Pointer overhead information corresponding with CPRI business described in every road is generated respectively, and the pointer overhead information is used to indicate decoding The start frame of CPRI business described in the road Hou Mei is in the position of the corresponding optical channel data tributary unit；

10. method according to claim 1-4, which is characterized in that the road the m CPRI business that will be received with While one-to-one mode is mapped in the optical channel data tributary unit of the road m, the method also includes:

11. method according to claim 1-4, which is characterized in that the road the m CPRI business that will be received with One-to-one mode is mapped to before the optical channel data tributary unit of the road m, the method also includes:

CPRI start frame frame headers overhead corresponding with every road CPRI business is added respectively, and the CPRI start frame frame headers overhead is at least Frame of the start frame in the position of the corresponding optical channel data tributary unit including being used to indicate CPRI business described in every road Head instruction information.

12. method according to claim 1-4, which is characterized in that the m that the CPRI business will be carried After road optical channel data tributary unit is multiplexed into the time slot of optical channel Payload Unit, the method also includes:

The optical channel Payload Unit for having carried the road the m CPRI business is added into optical channel transmission unit expense, constitutes light Channel transmission element.

13. method according to claim 1-4, which is characterized in that

The CPRI basic rate is the multiple of the basic frame rate of CPRI.

14. method according to claim 1-4, which is characterized in that

The CPRI basic rate is 491.52Mbit/s or 614.4Mbit/s.

15. the method for data parsing, which is characterized in that the described method includes:

According to the information that the overhead area of optical channel Payload Unit carries, the service class of the optical channel Payload Unit carrying is obtained Type；

When the type of service be include the CPRI mixed service of the road m CPRI business when, it is determining with the road the m CPRI business one by one The corresponding road m optical channel data tributary unit；

According to the mapping cost information carried in optical channel data tributary unit described in every road, to every road optical channel data branch list Member carries out demapping processing, obtains the corresponding basic frame of at least two CPRI of every road CPRI business；

The location information for obtaining the corresponding CPRI start frame of CPRI business described in every road is obtained since the CPRI start frame All basic frames of CPRI, the CPRI start frame are first basic frame of CPRI.

16. the method for data parsing according to claim 15, which is characterized in that

The information carried according to the overhead area of the optical channel Payload Unit obtains the optical channel Payload Unit carrying Type of service specifically includes:

The payload type instruction information that the overhead area of the optical channel Payload Unit carries is obtained, is indicated according to the payload type Information obtains the type of service of the optical channel Payload Unit carrying.

17. the method for data parsing according to claim 15, which is characterized in that the determination and the road the m CPRI industry It is engaged in the one-to-one road m optical channel data tributary unit, specifically includes:

The payload structure instruction information that the overhead area of the optical channel Payload Unit carries is obtained, is indicated according to the payload structure Information obtain the optical channel Payload Unit whether each time slot occupied and the CPRI business of occupied time slot carrying Type and CPRI business mark；

According to whether each time slot of the optical channel Payload Unit occupied and the CPRI business of occupied time slot carrying Type and CPRI business mark, identification with the one-to-one road the m optical channel data tributary unit of the road the m CPRI business.

18. the method for 5 to 17 described in any item data parsings according to claim 1, which is characterized in that described according to every road institute The mapping cost information carried in optical channel data tributary unit is stated, every road optical channel data tributary unit is carried out at demapping Reason, obtains the corresponding basic frame of at least two CPRI of every road CPRI business, specifically includes:

According to the mapping cost information carried in optical channel data tributary unit described in every road, corresponding every road CPRI business is obtained Clock source information；

If the CPRI business is reference clock business or uses the CPRI of identical clock source with the reference clock business Business then maps regulation by bit synchronous or synchronizes general mapping regulation and carry out to corresponding optical channel data tributary unit Demapping processing；

If the CPRI business is to use the CPRI business in different clocks source with the reference clock business, by asynchronous logical Demapping processing is carried out to corresponding optical channel data tributary unit with mapping regulation.

19. the method for 5 to 17 described in any item data parsings according to claim 1, which is characterized in that

The location information for obtaining the corresponding CPRI start frame of CPRI business described in every road, specifically includes:

The corresponding pointer overhead information of every road CPRI business is obtained, the corresponding CPRI start frame of CPRI business described in every road is obtained Location information；

Or

It identifies the corresponding CPRI start frame frame headers overhead of every road CPRI business, obtains the corresponding CPRI of CPRI business described in every road and rise The location information of beginning frame.

20. the method for 5 to 17 described in any item data parsings according to claim 1, which is characterized in that obtain described in every road The location information of the corresponding CPRI start frame of CPRI business, obtain the basic frame of all CPRI since the CPRI start frame it Afterwards, the method also includes:

21. a kind of device of Deta bearer, which is characterized in that described device includes:

Map unit, the road the m CPRI business for will receive are mapped to the road m optical channel data branch list in a manner of one-to-one In member；

Multiplexing Unit, for the road the m optical channel data tributary unit for carrying the CPRI business to be multiplexed into optical channel payload In the time slot of unit；

Wherein, the rate of the time slot is equal to CPRI basic rate.

22. device according to claim 21, which is characterized in that

Described device further includes processing unit, is used for:

23. device according to claim 22, which is characterized in that the optical channel payload list that the processing unit is chosen Member is the optical channel Payload Unit of n times of scheduled rate, and the optical channel Payload Unit of the n times of scheduled rate is net by n optical channel Lotus cellular logic branch is formed according to preset byte interleaver；

24. according to the described in any item devices of claim 21-23, which is characterized in that the map unit is specifically used for:

25. according to the described in any item devices of claim 21-23, which is characterized in that the Multiplexing Unit is also used to:

26. according to the described in any item devices of claim 21-23, which is characterized in that described device further includes grouped element, tool Body is used for:

It, will at least two-way CPRI service bits or the word when in the one group of business determined including at least two-way CPRI business Section is multiplexed with serial bit stream all the way.

27. according to the described in any item devices of claim 21-23, which is characterized in that single in the optical channel Payload Unit The bandwidth of time slot is the bandwidth before CPRI option 1 encodes；

Described device further includes decoding unit, is specifically used for:

28. according to the described in any item devices of claim 21-23, which is characterized in that the map unit is also used to:

29. according to the described in any item devices of claim 21-23, which is characterized in that the map unit is also used to:

30. according to the described in any item devices of claim 21-23, which is characterized in that processing unit is also used to:

31. according to the described in any item devices of claim 21-23, which is characterized in that the Multiplexing Unit is also used to:

32. the device of data parsing, which is characterized in that described device includes:

Acquiring unit, the information for being carried according to the overhead area of optical channel Payload Unit, obtains the optical channel Payload Unit The type of service of carrying；

Determination unit, for when the type of service be include the CPRI mixed service of the road m CPRI business when, it is determining with the m The one-to-one road the m optical channel data tributary unit of road CPRI business；

De-mapping unit, the mapping cost information for being carried in the optical channel data tributary unit according to every road, to every road Optical channel data tributary unit carries out demapping processing, obtains the corresponding basic frame of at least two CPRI of every road CPRI business；

The acquiring unit is also used to obtain the location information of the corresponding CPRI start frame of CPRI business described in every road, obtains certainly The basic frame of all CPRI that the CPRI start frame starts, the CPRI start frame are first basic frame of CPRI.

33. the device of data parsing according to claim 32, which is characterized in that

The acquiring unit, is specifically used for:

34. the device of data parsing according to claim 32, which is characterized in that the determination unit is specifically used for:

35. according to the device of the described in any item data parsings of claim 32 to 34, which is characterized in that the demapping list Member is specifically used for:

When the CPRI business is reference clock business or uses the CPRI industry of identical clock source with the reference clock business When business, regulation is mapped by bit synchronous or synchronizes general mapping regulation corresponding optical channel data tributary unit is solved Mapping processing；

When the CPRI business is to use the CPRI business in different clocks source with the reference clock business, pass through async-generic It maps regulation and demapping processing is carried out to corresponding optical channel data tributary unit.

36. according to the device of the described in any item data parsings of claim 32 to 34, which is characterized in that

The acquiring unit, is specifically used for:

Or

37. according to the device of claim 32-34 described in any item data parsing, which is characterized in that described device further includes Coding unit is specifically used for: