CN106330417A - Data bearing method and device and data analyzing method and device - Google Patents

Data bearing method and device and data analyzing method and device Download PDF

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Publication number
CN106330417A
CN106330417A CN201510345466.XA CN201510345466A CN106330417A CN 106330417 A CN106330417 A CN 106330417A CN 201510345466 A CN201510345466 A CN 201510345466A CN 106330417 A CN106330417 A CN 106330417A
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Prior art keywords
cpri
business
road
optical channel
unit
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CN201510345466.XA
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CN106330417B (en
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苏伟
吴秋游
肖新
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN201510345466.XA priority Critical patent/CN106330417B/en
Priority to PCT/CN2016/086254 priority patent/WO2016202296A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
    • H04J3/1605—Fixed allocated frame structures
    • H04J3/1652—Optical Transport Network [OTN]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q11/0071—Provisions for the electrical-optical layer interface

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Optical Communication System (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

The present invention discloses a data bearing method and device and a data analyzing method and device which relate to the optical communication technology field and are invented for solving the problem in the prior art that the time delay is larger, wherein the data bearing method comprises the steps of receiving m common public radio interface (CPRI) businesses, wherein m is an integer greater than 1; mapping the received m CPRI businesses to m optical channel data branch units in a one-to-one correspondence manner; multiplexing the m optical channel data branch units carrying the CPRI businesses to the time slots of an optical channel payload units, wherein the time slot speed is equal to the CPRI basic speed. The data bearing method and device and the data analyzing method and device of the present invention are applied to the transmission process of the CPRI businesses.

Description

The method of the method for Deta bearer, device and data parsing, device
Technical field
The present invention relates to technical field of photo communication, particularly relate to the method for Deta bearer, device and number According to the method resolved, device.
Background technology
At present, the application of distributed base station is more and more extensive.Compared with conventional macro base station, distributed base Stand indoor baseband processing unit (English: Building Base band Unit, to be called for short BBU) and Remote Radio Unit (English: Radio Remote Unit, it is called for short: RRU) be separated, BBU And connected by optical fiber between RRU.Thus, (English: Common from common public radio interface Public Radio Interface, is called for short: base band data (hereinafter referred CPRI industry CPRI) Business) need by optical transfer network (English: Optical Transport Network, abbreviation: OTN) Transmit.Wherein, OTN network electric layer technical specification defines the light channel unit of three levels to realize Different functions, respectively optical channel Payload Unit are (English: Optical Channel Payload Unit, is called for short: OPUk), it is provided that the function of client signal carrying；Optical Channel Data Unit-k (English Literary composition: Optical Channel Data Unit, is called for short: ODUk), it is provided that end-to-end transmission path Maintenance and operation function；Optical channel transmission unit (it is English: Optical Channel Transport Unit, It is called for short: OTUk), it is provided that the Network Management Function of point-to-point Optical Channel Transport Unit-k rank.Wherein, Coefficient k represents OPUk, ODUk and the OTUk of the different bit rates supported.K=1 represents Bit rate grade is that 2.5Gbit/s, k=2 represent that bit rate grade is 10Gbit/s, k=3 table Show that bit rate grade is that 40Gbit/s, k=4 represent that bit rate grade is 100Gbit/s, k=flex Represent that bit rate is any.It is illustrated in figure 1 one and comprises check field (English: Forward Error Correction, is called for short: the structural representation of OTUk frame structure FEC), it includes 4 row 4080 Row, wherein, front 14 row include the frame alignment sequence (English of the function for providing frame synchronization to position respectively Literary composition: Frame Alignment Signal, is called for short: FAS), ODUk expense (English: overhead It is called for short: OH) district and OTUk overhead area；15 row and 16 are classified as OPUk overhead area；17 row It is classified as OPU payload section to 3824；3825 to 4080 are classified as check field.It is illustrated in figure 2 OPUk The schematic diagram of frame structure, it is front 3824 row shown in Fig. 1, illustrate only OPUk in Fig. 2 Primary structure, i.e. 15 row to 3824 row, mainly include OPU overhead area and OPU payload District.
CPRI, as a kind of general standard interface, defines a series of speed, according to up-to-date CPRI standard, it includes that the interface of CPRI option 1～8 totally eight types, corresponding speed are From 491.52Mbit/s to 9830.4Mbit/s (before coding) or from 614.4Mbit/s to 10137.6Mbit/s totally eight kinds of speed (after coding).In actual application, due to 2G, 3G and 4G Network coexisted, same steel tower often comprises the polytype base station of multiple operator, thus same station There is the Deta bearer demand that mixing transmits the CPRI business of multiple different rates in point.
In prior art, during utilizing OTN network to carry out the transmission of CPRI mixed service, Firstly the need of CPRI business waiting for transmission being mapped to low order OPU, adding ODU expense and constituting low This process simplification (for the ease of describing, is hereafter described as CPRI business waiting for transmission by rank ODU It is mapped to low order ODU)；Low order ODU business is mapped to high rank optical channel data tributary unit again It is multiplexed with after in (English: Optical channel Data Tributary Unit, to be called for short ODTU) High-order OPU, (for the ease of describing, is hereafter described as this process simplification by low order ODU business Map multiplexing to high-order OPU) again by high-order OPU according to the order of ODU, OTU by layer by layer Add corresponding expense to ultimately form after high-order OTU by optical fiber transmission.
Such as: current CPRI mixed service waiting for transmission is to include the mixing of CPRI option1～8 During business, as it is shown on figure 3, use the scheme of prior art to need through following two processes: 1) For CPRI option1, CPRI option2, (English: Generic by general mapping code Mapping Procedure, is called for short: GMP) be respectively mapped to ODU0；For CPRI option3 It is mapped to ODU1 by GMP；For CPRI option4～8, then map rule by bit synchronous Journey (English: Bit Synchronous Mapping Procedure, it is called for short: BMP) reflect respectively It is mapped to ODUflex.2) by multichannel low order ODU (ODU0, ODU1 or ODUflex) industry Business is multiplexed into high-order OPU by GMP, is then passed through adding corresponding expense layer by layer and ultimately forms high-order OTU also sends.
Studying discovery through inventor, CPRI business is higher to delay requirement, and is inciting somebody to action in prior art When each CPRI business is transmitted by OTN network, required time delay is relatively big, thus is unfavorable for CPRI The most quickly transmission of business.
Summary of the invention
The present invention provides the method and device of a kind of Deta bearer, it is possible to increase the bandwidth of OTN network Utilization rate.
For reaching above-mentioned purpose, the present invention adopts the following technical scheme that
First aspect, a kind of method that the invention provides Deta bearer, described method includes:
Receiving m road common public radio interface CPRI business, wherein, m is the integer more than 1；
The m road CPRI business received is mapped to m road optical channel data in man-to-man mode In tributary unit；
The m road optical channel data tributary unit carrying described CPRI business is multiplexed into optical channel clean In the time slot of lotus unit；
Wherein, the speed of described time slot is equal to CPRI basic rate.
In conjunction with first aspect, in the first implementation of first aspect, the described m that will receive Before road CPRI business is mapped in the optical channel data tributary unit of m road in man-to-man mode, institute Method of stating also includes:
Speed according to CPRI business described in every road and the speed of single described time slot, determine described m First quantity of the time slot required for the CPRI business of road；
Choose the described optical channel Payload Unit of the time slot comprising described first quantity.
In conjunction with the first implementation of first aspect, in the second implementation of first aspect, The optical channel Payload Unit that described optical channel Payload Unit is n times of scheduled rate chosen, described n times The optical channel Payload Unit of scheduled rate by n optical channel Payload Unit logic branch road according to default byte Interleaver is formed；
Single described optical channel Payload Unit logic branch road includes overhead area and payload section, and payload section includes The described time slot of the second predetermined number；
The value of described n determines according to the ratio of described first quantity with the second quantity.
In conjunction with the second implementation of first aspect, in the third implementation of first aspect, Described scheduled rate is 10Gbit/s or 12Gbit/s.
In conjunction with first aspect, first aspect the first, in the second or the third implementation Any one, in the 4th kind of implementation of first aspect, the described m road CPRI that will receive Business is mapped in the optical channel data tributary unit of m road in man-to-man mode, specifically includes:
CPRI business described in the first via is defined as reference clock business, described first via CPRI industry Business is any one road in described at least two-way CPRI business；
By described reference clock business and with the described reference clock identical clock source of business employing CPRI business maps code by bit synchronous or synchronizes general mapping code and map one to one Enter in described optical channel data tributary unit；
Reflected using the CPRI business in different clocks source with described reference clock business by async-generic Penetrate code to be mapped into one to one in described optical channel data tributary unit.
In conjunction with first aspect, first aspect the first, the second, the third or the 4th kind of realization Any one in mode, in the 5th kind of implementation of first aspect, described will carry described The m road optical channel data tributary unit of CPRI business is multiplexed in the time slot of optical channel Payload Unit Meanwhile, described method also includes:
Payload class is increased in the overhead area of the frame structure of the optical channel Payload Unit that value is 0 of multi-frame instruction Type indicates, and the instruction of described payload type is for representing the business that described optical channel Payload Unit currently carries Type is multichannel CPRI business；
Value in multi-frame instruction is the frame structure of the optical channel Payload Unit of the maximum of 2 to multi-frame instruction Overhead area increase multiplexing structure instruction, the multiplexing structure instruction of two adjacent frames is when being used for representing current Gap is the most occupied, CPRI type of service, CPRI business or the CPRI industry of current time slots carrying The mark of business group.
In conjunction with first aspect, first aspect the first, the second, the third realize, the 4th kind or Any one in the 5th kind of implementation of person, in the 6th kind of implementation of first aspect, described The m road CPRI business received is mapped to m road optical channel data branch road in man-to-man mode Before in unit, described method also includes:
At least one identical to the identical clock source of employing and type of service road CPRI business is defined as one group Business；
If it is determined that one group of business include at least two-way CPRI business, then by described at least two Road CPRI service bits or byte are multiplexed with a road serial bit stream.
In conjunction with first aspect, first aspect the first, the second, the third realize, the 4th kind, 5th kind realize or the 6th kind of implementation in any one, in the 7th kind of realization of first aspect In mode, in described optical channel Payload Unit single time slot with a width of CPRI option one encode before Bandwidth；
Described described at least two-way CPRI business being respectively mapped to has phase with described CPRI business Before in the described optical channel data tributary unit of way, described method also includes:
Described m road CPRI business to be lifted is decoded, obtains decoded described m road CPRI business.
In conjunction with first aspect, first aspect the first, the second, the third realize, the 4th kind, Any one in 5th kind of realization, the 6th kind or the 7th kind of implementation, in the of first aspect In eight kinds of implementations, described the m road CPRI business received is mapped in man-to-man mode While in the optical channel data tributary unit of m road, described method also includes:
Generate the pointer overhead information corresponding with CPRI business described in every road, described pointer overhead respectively Information is for indicating the start frame of CPRI business described in decoded every road at corresponding described optical channel The position of data tributary unit；
Respectively described pointer overhead information is stored the expense to corresponding optical channel data tributary unit District.
In conjunction with first aspect, first aspect the first, the second, the third realize, the 4th kind, Any one in 5th kind of realization, the 6th kind or the 7th kind of implementation, in the of first aspect In nine kinds of implementations, described the m road CPRI business received is mapped in man-to-man mode While in the optical channel data tributary unit of m road, described method also includes:
Generate the pointer overhead information corresponding with CPRI business described in every road, described pointer overhead respectively Information is for indicating the start frame of CPRI business described in decoded every road at corresponding described optical channel The position of data tributary unit；
The multiplexing structure described pointer overhead information stored respectively to described optical channel Payload Unit refers to In showing.
In conjunction with first aspect, first aspect the first, the second, the third realize, the 4th kind, Any one in 5th kind of realization, the 6th kind or the 7th kind of implementation, in the of first aspect In ten kinds of implementations, described the m road CPRI business received is mapped in man-to-man mode Before the optical channel data tributary unit of m road, described method also includes:
Add the CPRI start frame frame headers overhead corresponding with every road CPRI business, described CPRI respectively Start frame frame headers overhead at least includes for indicating the start frame of CPRI business described in every road in correspondence The frame head instruction information of the position of described optical channel data tributary unit.
In conjunction with first aspect, first aspect the first, the second, the third realize, the 4th kind, In 5th kind of realization, the 6th kind, the 7th kind, the 8th kind, the 9th kind or the tenth kind of implementation Any one, in the 11st kind of implementation of first aspect, described will carry described CPRI After the m road optical channel data tributary unit of business is multiplexed in the time slot of optical channel Payload Unit, institute Method of stating also includes:
The described optical channel Payload Unit carrying described m road CPRI business is added optical channel transmission Unit expense, constitutes optical channel transmission unit.
In conjunction with first aspect, first aspect the first, the second, the third realize, the 4th kind, 5th kind of realization, the 6th kind, the 7th kind, the 8th kind, the 9th kind, the tenth kind or the 11st kind of reality Any one in implementation in existing mode, in the 12nd kind of implementation of first aspect, institute State the multiple that CPRI basic rate is the basic frame rate of CPRI.
In conjunction with first aspect, first aspect the first, the second, the third realize, the 4th kind, 5th kind of realization, the 6th kind, the 7th kind, the 8th kind, the 9th kind, the tenth kind, the 11st kind or Any one in implementation in 12nd kind of implementation, in the 13rd kind of realization of first aspect In mode, described CPRI basic rate is 491.52Mbit/s or 614.4Mbit/s.
Second aspect, a kind of method that the invention provides data parsing, described method includes:
The information that overhead area according to described optical channel Payload Unit is carried, obtains described optical channel payload The type of service of unit carrying；
When described type of service is the CPRI mixed service including m road CPRI business, determine with Described m road CPRI business m road optical channel data tributary unit one to one；
According to the mapping cost information carried in optical channel data tributary unit described in every road, to every road light Channel data tributary unit carries out demapping process, obtains at least two that every road CPRI business is corresponding The basic frame of CPRI；
The positional information of the CPRI start frame that the CPRI business described in every road that obtains is corresponding, obtains from institute Stating the basic frame of all CPRI that CPRI start frame starts, described CPRI start frame is first The basic frame of CPRI.
In conjunction with second aspect, in the first implementation of second aspect, described logical according to described light The information that the overhead area of road Payload Unit is carried, obtains the service class of described optical channel Payload Unit carrying Type, specifically includes:
Obtain the payload type instruction information that the overhead area of described optical channel Payload Unit is carried, according to institute State payload type instruction information, obtain the type of service of described optical channel Payload Unit carrying.
In conjunction with the first implementation of second aspect or second aspect, at the second of second aspect In implementation, described determine and described m road CPRI business m road optical channel number one to one According to tributary unit, specifically include:
Obtain the payload structure instruction information that the overhead area of described optical channel Payload Unit is carried, according to institute State payload structure instruction information obtain each time slot of described optical channel Payload Unit the most occupied with And the type of the CPRI business of occupied time slot carrying and the mark of CPRI business；
The most occupied and the occupied time slot of each time slot according to described optical channel Payload Unit The type of the CPRI business of carrying and the mark of CPRI business, identify and described m road CPRI industry It is engaged in m road optical channel data tributary unit one to one.
In conjunction with second aspect, second aspect the first or the second implementation in any one Kind, in the third implementation of second aspect, optical channel data branch road described in the every road of described basis The mapping cost information carried in unit, is carried out at demapping every road optical channel data tributary unit Reason, obtains the basic frame of at least two CPRI that every road CPRI business is corresponding, specifically includes:
According to the mapping cost information carried in optical channel data tributary unit described in every road, obtain correspondence The clock source information of every road CPRI business；
If described CPRI business is described reference clock business or adopts with described reference clock business By the CPRI business of identical clock source, then map code by bit synchronous or synchronize general mapping Code carries out demapping process to corresponding optical channel data tributary unit；
If described CPRI business is and the CPRI in described reference clock business employing different clocks source Business, then map code by async-generic and corresponding optical channel data tributary unit carried out demapping Process.
In conjunction with second aspect, second aspect the first, in the second or the third implementation Any one, in the 4th kind of implementation of second aspect, CPRI industry described in the every road of described acquisition The positional information of the CPRI start frame that business is corresponding, specifically includes:
Obtain the pointer overhead information that every road CPRI business is corresponding, obtain CPRI business described in every road The positional information of corresponding CPRI start frame；
Or
Identify the CPRI start frame frame headers overhead that every road CPRI business is corresponding, obtain described in every road The positional information of the CPRI start frame that CPRI business is corresponding.
In conjunction with second aspect, second aspect the first, the second, the third or the 4th kind of realization Any one in mode, in the 5th kind of implementation of second aspect, obtains CPRI described in every road The positional information of the CPRI start frame that business is corresponding, obtains the institute started from described CPRI start frame After having the basic frame of CPRI, described method also includes:
The basic frame of all CPRI that CPRI business described in every road is corresponding is carried out coded treatment.
The third aspect, present invention also offers the device of a kind of Deta bearer, and described device includes:
Receiving unit, be used for receiving m road common public radio interface CPRI business, wherein, m is Integer more than 1；
Map unit, for being mapped to m by the m road CPRI business received in man-to-man mode In the optical channel data tributary unit of road；
Multiplexing Unit, for carrying the m road optical channel data tributary unit of described CPRI business It is multiplexed in the time slot of optical channel Payload Unit；
Wherein, the speed of described time slot is equal to CPRI basic rate.
In conjunction with the third aspect, in the first implementation of the third aspect, described device also includes place Reason unit, is used for:
Speed according to CPRI business described in every road and the speed of single described time slot, determine described m First quantity of the time slot required for the CPRI business of road；
Choose the described optical channel Payload Unit of the time slot comprising described first quantity.
In conjunction with the first implementation of the third aspect, in the second implementation of the third aspect, The optical channel payload list that described optical channel Payload Unit is n times of scheduled rate that described processing unit is chosen Unit, the optical channel Payload Unit of described n times of scheduled rate is by n optical channel Payload Unit logic branch road Formed according to default byte intertexture division multiplexing；
Single described optical channel Payload Unit logic branch road includes overhead area and payload section, and payload section includes The described time slot of the second predetermined number；
The value of described n determines according to the ratio of described first quantity with the second quantity.
In conjunction with in the third aspect, the first implementation of the third aspect or the second implementation Any one, in the third implementation of the third aspect, described map unit, specifically for:
CPRI business described in the first via is defined as reference clock business, described first via CPRI industry Business is any one road in described at least two-way CPRI business；
By described reference clock business and with the described reference clock identical clock source of business employing CPRI business maps code by bit synchronous or synchronizes general mapping code and map one to one Enter in described optical channel data tributary unit；
Reflected using the CPRI business in different clocks source with described reference clock business by async-generic Penetrate code to be mapped into one to one in described optical channel data tributary unit.
In conjunction with the third aspect, the first implementation of the third aspect, the second implementation or Any one in three kinds of implementations, in the 4th kind of implementation of the third aspect, described multiplexing Unit, is additionally operable to:
Payload class is increased in the overhead area of the frame structure of the optical channel Payload Unit that value is 0 of multi-frame instruction Type indicates, and the instruction of described payload type is for representing the business that described optical channel Payload Unit currently carries Type is multichannel CPRI business；
Value in multi-frame instruction is the frame structure of the optical channel Payload Unit of the maximum of 2 to multi-frame instruction Overhead area increase multiplexing structure instruction, the multiplexing structure instruction of two adjacent frames is when being used for representing current Gap is the most occupied, CPRI type of service, CPRI business or the CPRI industry of current time slots carrying The mark of business group.
In conjunction with the third aspect, the first implementation of the third aspect, the second implementation, the 3rd Any one in kind of implementation or the 4th kind of implementation, in the 5th kind of realization of the third aspect In mode, described device also includes grouped element, specifically for:
At least one identical to the identical clock source of employing and type of service road CPRI business is defined as one group Business；
When the one group of business determined includes at least two-way CPRI business, by described at least two-way CPRI service bits or byte are multiplexed with a road serial bit stream.
In conjunction with the third aspect, the first implementation of the third aspect, the second implementation, the 3rd Any one in kind of implementation, the 4th kind or the 5th kind of implementation, in the of the third aspect In six kinds of implementations, band a width of CPRI option one of single time slot in described optical channel Payload Unit Bandwidth before coding；
Described device also includes decoding unit, specifically for:
Described m road CPRI business to be lifted is decoded, obtains decoded described m road CPRI business.
In conjunction with the third aspect, the third aspect the first, the second, the third, the 4th kind, the 5th Kind or the 6th kind of implementation in any one, in the 7th kind of implementation of the third aspect, Described map unit, is additionally operable to:
Generate the pointer overhead information corresponding with CPRI business described in every road, described pointer overhead respectively Information is for indicating the start frame of CPRI business described in decoded every road at corresponding described optical channel The position of data tributary unit；
Respectively described pointer overhead information is stored the expense to corresponding optical channel data tributary unit District.
In conjunction with the third aspect, the third aspect the first, the second, the third, the 4th kind, the 5th Kind or the 6th kind of implementation in any one, in the 8th kind of implementation of the third aspect, Described map unit, is additionally operable to:
Generate the pointer overhead information corresponding with CPRI business described in every road, described pointer overhead respectively Information is for indicating the start frame of CPRI business described in decoded every road at corresponding described optical channel The position of data tributary unit；
The multiplexing structure described pointer overhead information stored respectively to described optical channel Payload Unit refers to In showing.
In conjunction with the third aspect, the third aspect the first, the second, the third, the 4th kind, the 5th Kind or the 6th kind of implementation in any one, in the 9th kind of implementation of the third aspect, Described processing unit, is additionally operable to:
Add the CPRI start frame frame headers overhead corresponding with every road CPRI business, described CPRI respectively Start frame frame headers overhead at least includes for indicating the start frame of CPRI business described in every road in correspondence The frame head instruction information of the position of described optical channel data tributary unit.
In conjunction with the third aspect, the third aspect the first, the 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, the 3rd In tenth kind of implementation of aspect, described Multiplexing Unit is additionally operable to:
The described optical channel Payload Unit carrying described m road CPRI business is added optical channel transmission Unit expense, constitutes optical channel transmission unit.
Fourth aspect, present invention also offers the device of a kind of data parsing, and described device includes:
Acquiring unit, for the information carried according to the overhead area of described optical channel Payload Unit, obtains The type of service of described optical channel Payload Unit carrying；
Determine unit, be used for when described type of service is to include the CPRI mixing of m road CPRI business During business, determine and described m road CPRI business m road optical channel data branch road list one to one Unit；
De-mapping unit, for opening according to the mapping carried in optical channel data tributary unit described in every road Pin information, carries out demapping process to every road optical channel data tributary unit, obtains every road CPRI industry The basic frame of at least two CPRI that business is corresponding；
Described acquiring unit, is additionally operable to the CPRI start frame that the CPRI business described in every road that obtains is corresponding Positional information, obtain the basic frame of all CPRI started from described CPRI start frame, described CPRI Start frame is first basic frame of CPRI.
In conjunction with fourth aspect, in the first implementation of fourth aspect, described acquiring unit, tool Body is used for:
Obtain the payload type instruction information that the overhead area of described optical channel Payload Unit is carried, according to institute State payload type instruction information, obtain the type of service of described optical channel Payload Unit carrying.
In conjunction with the first implementation of fourth aspect or fourth aspect, at the second of fourth aspect In implementation, described determine unit, specifically for:
Obtain the payload structure instruction information that the overhead area of described optical channel Payload Unit is carried, according to institute State payload structure instruction information obtain each time slot of described optical channel Payload Unit the most occupied with And the type of the CPRI business of occupied time slot carrying and the mark of CPRI business；
The most occupied and the occupied time slot of each time slot according to described optical channel Payload Unit The type of the CPRI business of carrying and the mark of CPRI business, identify and described m road CPRI industry It is engaged in m road optical channel data tributary unit one to one.
In conjunction with in fourth aspect, the first implementation of fourth aspect or the second implementation Any one, in the third implementation of fourth aspect, described de-mapping unit, specifically for:
According to the mapping cost information carried in optical channel data tributary unit described in every road, obtain correspondence The clock source information of every road CPRI business；
When described CPRI business is described reference clock business or uses with described reference clock business During the CPRI business of identical clock source, map code by bit synchronous or synchronize general to map rule Journey carries out demapping process to corresponding optical channel data tributary unit；
When described CPRI business is and the CPRI industry in described reference clock business employing different clocks source During business, map code by async-generic and corresponding optical channel data tributary unit is carried out at demapping Reason.
In conjunction with fourth aspect, the first implementation of fourth aspect, the second or the third realization Any one in mode, in the 4th kind of implementation of fourth aspect, described acquiring unit, tool Body is used for:
Obtain the pointer overhead information that every road CPRI business is corresponding, obtain CPRI business described in every road The positional information of corresponding CPRI start frame；
Or
Identify the CPRI start frame frame headers overhead that every road CPRI business is corresponding, obtain described in every road The positional information of the CPRI start frame that CPRI business is corresponding.
In conjunction with fourth aspect, fourth aspect the first, the second, the third or the 4th kind of realization Any one in mode, in the 5th kind of implementation of fourth aspect, described device also includes compiling Code unit, specifically for:
The basic frame of all CPRI that CPRI business described in every road is corresponding is carried out coded treatment.
The method and device of the Deta bearer that the present invention provides, after receiving n road CPRI business, Directly by n road CPRI business mapping multiplexing to OPU, with prior art, need CPRI Business is first mapped in low order ODU re-map multiplexing and compares to high-order OPU, and the present invention uses One-level maps the carrying that just can realize CPRI business, it is possible to reduce because two-stage maps the time delay brought, And then it is capable of the quick carrying of CPRI business.
The method and device of the data parsing that the present invention provides, with the method phase of the Deta bearer of transmitting terminal It is corresponding, it is only necessary to a demapping, it is possible to reduce the time delay required for demapping, it is thus possible to Realize the rapid extraction of CPRI business.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below by right In embodiment or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, Accompanying drawing in describing below is only some embodiments of the present invention, for those of ordinary skill in the art From the point of view of, on the premise of not paying creative work, it is also possible to obtain the attached of other according to these accompanying drawings Figure.
The structural representation of the Fig. 1 OTU frame structure for providing in prior art；
The structural representation of the Fig. 2 OPU frame structure for providing in prior art；
Fig. 3 is the schematic flow sheet of the method for a kind of CPRI service bearer of offer in prior art；
The schematic flow sheet of the method for the first Deta bearer that Fig. 4 provides for the embodiment of the present invention；
The schematic flow sheet of the method for the second Deta bearer that Fig. 5 provides for the embodiment of the present invention；
The signal that the frame structure of single channel OPULL that Fig. 6 provides for the embodiment of the present invention and time slot divide Figure；
N road OPULL is passed through single byte multiplexing for what the embodiment of the present invention provided by Fig. 7, constitutes 1 The schematic diagram of road OPU；
When Fig. 8 carries data for the OPU being made up of n road OPULL that the embodiment of the present invention provides, Its time slot deposits the schematic diagram of order；
The schematic flow sheet of the method for the third Deta bearer that Fig. 9 provides for the embodiment of the present invention；
Figure 10 shows for the flow process of a kind of method adding payload structure instruction that the embodiment of the present invention provides It is intended to；
The payload class of the multi-frame being made up of 256 OPU frames that Figure 11 provides for the embodiment of the present invention The schematic diagram of the storage of type and multiplexing structure instruction；
Figure 12 is represented same time slot for what the embodiment of the present invention provided by adjacent two multiplexing structures instruction The situation that takies, the schematic diagram of CPRI service conditions of carrying；
The schematic flow sheet of the method for the 4th kind of Deta bearer that Figure 13 provides for the embodiment of the present invention；
The Deta bearer method that Figure 14 provides for Figure 13 the schematic diagram of concrete application；
The schematic flow sheet of the method for the 5th kind of Deta bearer that Figure 15 provides for the embodiment of the present invention；
The schematic flow sheet of the method for the 6th kind of Deta bearer that Figure 16 provides for the embodiment of the present invention；
The storage schematic diagram of a kind of pointer overhead that Figure 17 provides for the embodiment of the present invention；
The schematic flow sheet of the method for the 7th kind of Deta bearer that Figure 18 provides for the embodiment of the present invention；
The storage schematic diagram of the another kind of pointer overhead that Figure 19 provides for the embodiment of the present invention；
The schematic flow sheet of the method for the 8th kind of Deta bearer that Figure 20 provides for the embodiment of the present invention；
The schematic diagram of the interpolation CPRI start frame frame head instruction that Figure 21 provides for the embodiment of the present invention；
Figure 22 for the embodiment of the present invention provide a kind of will add CPRI start frame frame head instruction CPRI surpasses frame data stream and is mapped into the schematic diagram of ODTU；
The schematic flow sheet of the method for the 9th kind of Deta bearer that Figure 23 provides for the embodiment of the present invention；
The schematic flow sheet of the method for the tenth kind of Deta bearer that Figure 24 provides for the embodiment of the present invention；
A kind of multiplexing mapping by mixing CPRI business that Figure 25 provides for the embodiment of the present invention arrives The schematic diagram of the concrete application of OPU；
The schematic flow sheet of the method for the first data parsing that Figure 26 provides for the embodiment of the present invention；
The schematic flow sheet of the method for the second data parsing that Figure 27 provides for the embodiment of the present invention；
The schematic flow sheet of the method for the third data parsing that Figure 28 provides for the embodiment of the present invention；
The schematic flow sheet of the method for the 4th kind of data parsing that Figure 29 provides for the embodiment of the present invention；
The schematic flow sheet of the method for the 5th kind of data parsing that Figure 30 provides for the embodiment of the present invention；
The schematic flow sheet of the method for the 6th kind of data parsing that Figure 31 provides for the embodiment of the present invention；
The schematic flow sheet of the method for the 7th kind of data parsing that Figure 32 provides for the embodiment of the present invention；
The structural representation of the device of the first Deta bearer that Figure 33 provides for the embodiment of the present invention；
The structural representation of the device of the second Deta bearer that Figure 34 provides for the embodiment of the present invention；
The structural representation of the device of the third Deta bearer that Figure 35 provides for the embodiment of the present invention；
The structural representation of the device of the 4th kind of Deta bearer that Figure 36 provides for the embodiment of the present invention；
The structural representation of the device of the first data parsing that Figure 37 provides for the embodiment of the present invention；
The structural representation of the device of the second data parsing that Figure 38 provides for the embodiment of the present invention；
The structural representation of the device of the 5th kind of Deta bearer that Figure 39 provides for the embodiment of the present invention；
The structural representation of the device of the third data parsing that Figure 40 provides for the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the present embodiment, the technical scheme in the present embodiment is carried out clear, Be fully described by, it is clear that described embodiment be only a part of embodiment of the present invention rather than Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making The every other embodiment obtained under creative work premise, broadly falls into the scope of protection of the invention.
A kind of method embodiments providing Deta bearer, described method is applied to optical transfer network In transmitting terminal.Wherein, in the embodiment of the present invention, the data of indication predominantly include at least two-way CPRI The CPRI mixed service of business.
The method of the Deta bearer that the embodiment of the present invention provides, as shown in Figure 4, including:
101: receiving m road common public radio interface CPRI business, wherein, m is more than 1 Integer.
102: the m road CPRI business received is mapped to m road optical channel in man-to-man mode In data tributary unit.
Wherein, described mapping mode can be that BMP maps (English: Bit Synchronous Mapping Procedure, is called for short: BMP), BGMP map (English: Bit-synchronous Generic Mapping Procedure, is called for short: BGMP) or AGMP map (English: Asynchronous Generic Mapping Procedure, is called for short: AGMP), specifically adopt Mapping mode can determine according to the type of CPRI business and clock source etc., refer to the most detailed State.
The process being mapped as mapping one by one of indication in this step, also will 1 road CPRI business map Enter in 1 road ODTU.Thus what the way of ODTU and CPRI mixed service to be lifted included The way of CPRI business is identical.
While mapping, need to add at time slot expense position JC1～JC6 of ODTU to reflect Penetrate Overhead, particularly as follows: process for BGMP mapping, then by fixing Cm value by CPRI Data stream is mapped into ODTU, and adds Cm information to JC1～JC3；At AGMP mapping Reason, then need the CPRI service traffics that real-time statistics is to be mapped, generate corresponding Cm value with in time Clock information CnD.Wherein, the described CPRI that Cm value is to be lifted within representing the single ODTU cycle The quantity of business, unit is m bit；CnD value is to be lifted in being used for representing the single ODTU cycle Described CPRI business relative to described CPRI business to be lifted in the upper ODTU cycle Variable quantity, unit is n-bit.Clock information CnD is used for receiving terminal according to this clock information CnD Recover original CPRI business clock and carry out CPRI Business Processing.
103: the m road optical channel data tributary unit carrying described CPRI business is multiplexed into light In the time slot of passage Payload Unit.
In this step, multichannel ODTU in step 102 is multiplexed in 1 road OPU.
Wherein, the speed of described time slot is equal to CPRI basic rate.This basic rate can be with CPRI The multiple of basic frame rate.
According to CPRI protocol definition, the speed of the basic frame of CPRI is 3.84MHz.Different types of The basic frame sign of CPRI business is different, thus the speed the most not phase of different types of CPRI business With.Such as, the basic frame sign of CPRI Option 1 is 128bit, then corresponding speed is 491.52Mbit/s。
As the optional implementation of one, in the present embodiment, CPRI basic rate is 128 times The speed of the basic frame of CPRI, namely the speed of CPRI option 1 is also 491.52Mbit/s and (adopts Before encoding with 8B/10B) or 614.4Mbit/s (after using 8B/10B coding).
For the ease of describing, the speed being the most all CPRI option 1 with CPRI basic rate As a example by illustrate, the application is not brought restriction.
Following table table 1 gives the speed of different types of CPRI business (CPRI option 1～8) and compiles Code before and coding after respectively corresponding with CPRI basic rate (speed of CPRI option 1) pass System.
Table 1
The method of the Deta bearer that the present invention provides, after receiving n road CPRI business, directly will N road CPRI business maps multiplexing in OPU, with prior art, needs CPRI business first First being mapped in low order ODU and re-map multiplexing and compare to high-order OPU, the present invention uses one-level to reflect Penetrate the carrying that just can realize CPRI business, it is possible to reduce because two-stage maps the time delay brought, and then It is capable of the quick carrying of CPRI business.
Additionally, due to eliminate the process that CPRI business is mapped to low order ODU, it is thus possible to Reduce the bandwidth shared by low order ODU, improve bandwidth availability ratio.
Inventor finds under study for action, and the problem that prior art there is also is: of the prior art The speed of the single time slot of OPUk is 1.25Gbit/s, each CPRI business is being led in prior art When crossing the transmission of OTN network, the problem that there is also serious bandwidth waste.Such as: CPRI option 1 business and CPRI option 2 business, when the first order is mapped to ODU0, do not make completely With the payload rates of ODU0, there is bandwidth waste.In like manner, CPRI option3 business is first When level is mapped to ODU1, does not uses the payload rates of ODU1 completely, there is bandwidth waste.
In order to solve the problems referred to above, the present invention, before carrying out Deta bearer, has been provided with bag in advance OPU containing different time-gap number that is to say the OPU of different bandwidth, can be according to multichannel CPRI to be lifted The speed of business chooses required OPU.Thus, as supplementing of method shown in Fig. 4, step The m road CPRI business received " is mapped to m road optical channel in man-to-man mode by rapid 101 In data tributary unit " before, as it is shown in figure 5, described method also includes:
201: according to speed and the speed of single described time slot of CPRI business described in every road, determine First quantity of the time slot required for the CPRI business of described m road.
In the specific implementation of this step, calculate total speed of mixing CPRI business to be lifted With the ratio of the speed of described single time slot, if this ratio is integer value, the then value of the first quantity For this ratio；If this ratio is non integer value, then rounds the value obtained after this ratio being added 1 and be This first quantity.
Such as: CPRI mixed service to be lifted is for including 1 road CPRI option1,2 road CPRI Option2 and the mixed service of 5 road CPRI option4, then different types of according to shown in table 1 CPRI business and the corresponding relation of basic rate, can get the total of CPRI mixed service to be lifted Speed is the basic rate of 1*1+2*2+5*5=30 times.Thus determine the first of time slot to be taken Quantity is 30.
202: choose the described optical channel Payload Unit of the time slot comprising described first quantity.
In a kind of implementation of this step, the frame structure of the OPU chosen in this step is n times The optical channel Payload Unit of scheduled rate, the optical channel Payload Unit of described n times of scheduled rate is by n Optical channel Payload Unit logic branch road is (English: Optical Channel Payload Unit Logic Lane, is called for short: OPULL) formed according to default byte intertexture division multiplexing.Its frame structure size is 4 Row 3824n arranges.Wherein, single described optical channel Payload Unit logic branch road includes overhead area and payload District, payload section includes the described time slot of the second predetermined number.
The value of described n determines according to the ratio of described first quantity with the second quantity.This process is concrete For: ask for the ratio of the first quantity and the second predetermined number, if this ratio is integer value, then should Integer value is as the number of required OPULL；If this ratio is not integer value, then by this ratio Value rounds the integer value that the obtains number as required OPULL after adding 1.
Such as: the timeslot number taken needed for m road CPRI business to be lifted is 120, single The timeslot number that OPULL is comprised is 24, then the number of required OPULL is 5, because of And the OPU chosen is the OPU comprising 5 OPULL.Needed for CPRI business to be lifted The timeslot number taken is 55, and the timeslot number that single OPULL is comprised is 24, then required The number of OPULL is 3, thus the OPU chosen is the OPU comprising 3 OPULL.
The frame structure of this OPU, time slot hereinafter describe in detail seen from dividing.
In another implementation of this step, when the frame structure of OPU is fixed size, as Directly utilize the frame structure of the fixed size of 4 row 3824 row of the OPU of prior art, the most directly Choose the OPU of the timeslot number comprising the first quantity.The process that is pre-configured with of this OPU is, The frame structure of OPU is carried out time slot division so that the size of the frame structure of different OPU is identical, but The timeslot number that comprises is different, so can choose according to CPRI business to be lifted the timeslot number that comprises with First quantity closest to and ensure that the OPU of carrying of CPRI business.
The above-mentioned OPU that the present invention is pre-configured with can bring following beneficial effect:
The OPU that the present invention provides includes the time slot that one or more speed is CPRI basic rate, Time slot granularity is less and timeslot number matches with CPRI business to be lifted.Thus CPRI to be lifted Business can effectively utilize the bandwidth of the OPU that the embodiment of the present invention provides, and improves bandwidth availability ratio.
As to the illustrating of the variable frame structure OPU of indication in method shown in Fig. 5, this OPU For the optical channel Payload Unit of n times of scheduled rate, the OPU of described n times of scheduled rate includes n OPULL, the value of described n determines according to the total bandwidth of described m road CPRI business, single institute Stating a width of described scheduled rate of band of OPULL, the size of the frame structure of single OPULL can be adopted By size same as the prior art, being also 4 row 3824 and arrange, single described OPULL includes Overhead area and payload section, overhead area includes the expense of single described OPULL, and payload section includes second The described time slot of predetermined number.
The optical channel Payload Unit of described n times of scheduled rate is by n optical channel Payload Unit logic branch road Being formed according to default byte intertexture division multiplexing, concrete interleaver refers to, the frame structure of described OPU Including overhead area and payload section, overhead area by the overhead area of OPULL described in every road according to default byte Interleaver is formed successively；Payload section by the payload section of OPULL described in every road according to described predetermined word Save interleaver successively to be formed.
According to inventor, the research of actual CPRI service bearer process can be obtained, single OPULL's Optimal bearer cap is about between 10Gbit/s-12Gbit/s.Thus, if choosing the speed of single time slot Rate is the 491.52Mbit/s before coding, then the second predetermined number can be taken as 24, and corresponding is single The scheduled rate of OPULL is about 12Gbit/s；The value of this second predetermined number can also be 20, The scheduled rate of corresponding single OPULL is about 10Gbit/s.If choosing the speed of single time slot For the 614.4Mbit/s after coding, then the second predetermined number can be taken as 20, and corresponding is single The scheduled rate of OPULL is about 12Gbit/s.
As the band of single OPULL a width of 10G Gbit/s, can will be made up of n road OPULL The named OPUXn of OPU, wherein " X " is Roman number, represent 10G；As single OPULL Band a width of 12Gbit/s time, the named OPUXIIn of OPU that can will be made up of n road OPULL, Wherein " XII " is Roman number, represents 12G.Wherein 12G or 10G all simply one The statement of approximation, does not represent accurate rate value.
Additionally, similarly to the prior art, OPU is increased ODU expense and can form ODU, then will ODU increases OTU overhead area can form OTU.Following table table 2 shows the speed when single time slot When being respectively 491.52Mbit/s and 614.4Mbit/s, the payload area rate of OPUXIIn and The speed of ODUXIIn/OTUXIIn.Compared with the payload area rate of OPUXIIn, why The speed of ODUXIIn/OTUXIIn is 239/238 times of the payload area rate of OPUXIIn, be because of Extra 16n row overhead area is contained relative to OPUXIIn payload section for ODUXIIn/OTUXIIn.
Table 2
As a example by dividing 24 time slots, it is illustrated in figure 6 frame structure and the time slot of single channel OPULL Divide, be total to the 3824th row particularly as follows: the frame structure of single channel OPULL is the 1st～4 row the 15th row 4 row * 3810 arrange, and arrange overhead area and 17 row～3824 row totally 3808 row payloads including 15～16 row two District, wherein, overhead area is for storage time slots expense, PSI and multi-frame instruction；In payload section with individual character Joint is 24 time slots for granularity division.Shown in Fig. 6 is the 24-constituted with the 24 above-mentioned OPULL of frame Multi-frame, the structure of each frame is identical.
It should be noted that why above-mentioned time slot granularity is chosen for single byte due to single time slot Bandwidth is the biggest；If the bandwidth of single time slot is relatively big, such as: 2.5Gbit/s, then payload section Time slot granularity of division can also be multibyte.
On the basis of the frame structure and time slot division of single channel OPULL shown in Fig. 6, can be by n Road OPULL passes through single byte or multibyte multiplexing, constitutes 1 road overall signal, namely 1 road OPU Signal.It is illustrated in figure 7 the frame knot of the OPU formed by n road OPULL by single byte multiplexing Structure, (14n+1) of specially the 1st～4 row～16n are classified as the overhead area of OPU, by n road OPULL Overhead area form according to single byte multiplexing, (16n+1)～the 3824n of the 1st～4 row are classified as OPU Payload section, the payload section of n road OPULL form according to single byte multiplexing.Corresponding OPU Payload section (16n+1～3824n row) is divided into 24n time slot.Time-gap number is TS A.B (its Middle A is single channel OPULL signal numbering, and value can be 1 ... n；B is in single channel OPULL The numbering of each time slot, value is 1 ... 24；Namely the time-gap number in OPU is, 1.1,2.1 ..., N.1,1.2,2.2 ..., until n.24).
It should be noted that Fig. 6 and Fig. 7 describe when all with the frame structure of single channel OPULL Start from the 15th row or the frame structure of OPU describes from 15n row, be due to by arranging front 14 (single channel OPULL) or front 14n row (OPU being made up of n road OPULL) add ODU and open Pin, OTU expense, may make up frame structure and the frame structure of OTU frame of ODU frame further.Also That is, as a example by the OPU being made up of n road OPULL, the 1～7n of the 1st row is classified as frame head instruction and opens Selling, (7n+1) of the 1st row～14n are classified as the overhead area of OTU, 1～14n row of the 2nd～4 row Overhead area for ODU.
Also, it should be noted similar with the frame structure of traditional OTU, the embodiment of the present invention provides The frame structure including OPU that n road OPULL forms, the OTU frame constituted further afterwards knot Structure can also be divided into and includes check field and do not include check field two class.
If additionally, the bandwidth of single time slot to be set to the 614.4Mbit/s after coding, then can use The frame structure of single channel OPULL of formed objects, the bandwidth of single channel OPULL still value is 12Gbit/s Left and right, distinctive points is only that the bandwidth of single time slot and is divided into the payload section of single channel OPULL 20 OPULL frames can be formed 20-multi-frame by 20 time slots rather than 24 time slots accordingly. Its band 491.52Mbit/s before a width of coding implementing process and single time slot and division 24 The process of individual time slot is similar to, and the present embodiment repeats no more.
In conjunction with above-mentioned time slot partition process, give as shown in Figure 8 when be made up of n road OPULL When OPU carries multichannel mixed service, its time slot deposits order.During actual application, need according to this Time-slot sequence carries out the carrying of CPRI business.
Such as: certain road CPRI service needed to be lifted takies TS1.1, TS1.2, TS2.1 tri- Individual time slot, then its carrying order is TS1.1, TS2.1, TS1.2.
Supplementing as method shown in Fig. 4, the timeslot number comprised in ODTU payload section, every road is with right Timeslot number required for the CPRI business answered, thus in the specific implementation of step 102, need Calculate the ratio of the speed of every road CPRI business and the speed of described single time slot, if this ratio For integer value, then using this ratio value as timeslot number corresponding to this road CPRI business；If this ratio Value is non integer value, then round the value obtained after adding 1 using this ratio corresponding as this road CPRI business Timeslot number.
Such as: CPRI business to be lifted is for including 1 road CPRI option1,2 road CPRI Option2 and the mixed service of 5 road CPRI option4, then different types of according to shown in table 1 CPRI business and the corresponding relation of basic rate, can get the bandwidth of CPRI option1 to be lifted Be the basic rate of 1 times, then the first quantity of its correspondence is 1；The bandwidth of every road CPRI option2 Be the basic rate of 2 times, then the first corresponding for two-way CPRI option2 quantity is respectively 2,2； The basic rate of a width of 5 times of the band of every road CPRI option4, then 5 road CPRI option4 correspondence The first quantity be respectively 5,5,5,5,5.
As the refinement to method shown in Fig. 4, step 102 " the m road CPRI business that will receive It is mapped in the optical channel data tributary unit of m road in man-to-man mode ", can be according to be lifted The clock source that CPRI business is used takes the mapping method of correspondence, as it is shown in figure 9, this process tool Body includes:
301: CPRI business described in the first via is defined as reference clock business, described first via CPRI Business be described at least any one road in two-way CPRI business.
Such as: minimum speed limit CPRI business can be selected as reference clock business.
302: by described reference clock business and with the described reference clock identical clock source of business employing CPRI business map code by bit synchronous or synchronize general mapping code and reflect one to one Inject in described optical channel data tributary unit.
303: the CPRI business in different clocks source will be used by asynchronous with described reference clock business General mapping code is mapped in described optical channel data tributary unit one to one.
As the refinement of method shown in Fig. 4, step 103 " will carry described CPRI business M road optical channel data tributary unit is multiplexed in the time slot of optical channel Payload Unit " while, also need Payload structure to be increased instruction (English: payload structure identifier, it is called for short: PSI) Specifying information, it include payload type instruction (English: payload type, be called for short: PT) and Multiplexing structure instruction is (English: Multiplex structure identifier is called for short: MSI).Wherein, PT is CPRI mixed service for the business indicating current OPU payload section to carry；MSI is used for referring to Show the carrying situation of each time slot of OPU, such as each time slot take situation, if certain time Gap is occupied, then the CPRI business of this time slot carrying or the type of CPRI service groups, and CPRI Business or the identification number etc. of CPRI service groups.Corresponding described interpolation payload structure indicates, such as Figure 10 Shown in, specifically include:
401: increase in the overhead area of the frame structure of the optical channel Payload Unit that value is 0 of multi-frame instruction Payload type indicates, and the instruction of described payload type is used for representing that described optical channel Payload Unit currently carries Type of service be multichannel CPRI business.
Carrying multichannel CPRI service conditions is currently mixed by payload type PT=0x23 instruction OPU.
When the frame structure of 1 OPU includes n OPULL, and by 256 described OPU's During frame structure 1 256-multi-frame of composition, as Figure 11 shows the whole frame knot of 1 above-mentioned OPU Structure (dotted line is shown above), and the 256-multi-frame being made up of the frame structure of 256 described OPU Section Overhead district (dotted line is shown below) corresponding to each frame；Wherein, the Section Overhead district of indication Refer to that the 4th row 14n+1 that is positioned at that illustrate only each frame arranges～the expense of 15n 1 row n row totally District, namely the information of the concrete storage of the PSI part of each frame.Wherein 0～255 is each OPU The numbering of frame, namely multi-frame instruction.
Wherein, in this step, the payload type PT of indication is located at the OPU that value is 0 of multi-frame instruction Overhead area, namely the 1st OPULL that the frame structure of the OPU that value is 0 of multi-frame instruction is corresponding PSI be PT；RES represents reserved bit.
402: the value in multi-frame instruction is the optical channel Payload Unit of the maximum of 2 to multi-frame instruction The overhead area of frame structure increases multiplexing structure instruction, and the multiplexing structure instruction of two adjacent frames is used for representing Current time slots is the most occupied, CPRI type of service, CPRI business or the CPRI of current time slots carrying The mark of service groups.
As shown in figure 11, it is 255 from the value that the value of multi-frame instruction is the instruction of 2 to multi-frame, totally 254 Storing multiplexing structure instruction expense MSI in the PSI of individual OPU frame, every frame carries n multiplexing knot Structure instruction expense, takies situation etc. for represent each time slot.
Such as: the 2nd to 2x+1 frame carries MSI [A.2], MSI [A.3] respectively ..., MSI [A.2x+1], For indicating TSA.1, TSA.2 ..., TSA.x takies situation, wherein A=1～n, for corresponding OPULL Numbering in OPU；1,2 ..., x is the time-gap number in current OPULL.
Show that adjacent two MSI of adjacent two frames are for representing same time slot in conjunction with Figure 11, Figure 12 The situation that takies, the concrete meaning such as CPRI service conditions of carrying.Particularly as follows: by every 2 words That saves one time slot of instruction takies situation.Wherein, the 1bit of former frame represents that this time slot is the most occupied With, 0 expression takies, and 1 represents the free time；2bit-5bit 4bit altogether represents the CPRI business of carrying Type, such as 0000 represents CPRI Option1, and 0001 represents CPRI Option 2 ..., 0111 Represent that CPRI Option 8,1000～1111 is left the CPRI service class of following higher rate Type uses, such as CPRI Option 9 etc.；The 6th of former frame～8bit and the 8bit of a later frame Totally 11 bits represent CPRI traffic ID or CPRI service groups ID.For CPRI service groups feelings Condition, the number of timeslots taken by this CPRI service groups corresponding and CPRI type of service are understood should The CPRI number of services that CPRI service groups is comprised.
In order to improve load-carrying efficiency, reduce management complexity, supplement as to method shown in Fig. 4, The m road CPRI business received " is mapped to m road light in man-to-man mode to lead to by step 102 In track data tributary unit " before, as shown in figure 13, described method also includes CPRI to be lifted Business carries out the process being grouped, and only needs to carry out the CPRI business after 1 group of multiplexing after such multiplexing Centralized Monitoring and management, this process particularly as follows:
501: at least one identical to the identical clock source of employing and type of service road CPRI business is determined It it is one group of business.
502: if it is determined that one group of business include at least two-way CPRI business, then by described At least two-way CPRI service bits or byte is multiplexed with a road serial bit stream.
Certainly, for only containing the group of 1 road CPRI business, then without bit or byte multiplexing.
After CPRI traffic packets is completed, CPRI can be carried out according to step 102 to step 103 The carrying of business.
Wherein, a road serial bit stream can regard a road CPRI business as.
If Figure 14 is multichannel CPRI business to be divided according to the process of above-mentioned steps 501 and step 502 Concrete load bearing process schematic diagram after group.Wherein, by m1Road clock identical with reference clock source employing Source and the identical CPRI service integration of type of service are 1 road CPRI business, use BMP the most again Or the mapping mode of BGMP is mapped to route ts1Individual time slot composition ODTU in (in figure with ODTU.ts1Illustrate)；In like manner, by m2Road uses identical clock source and the identical CPRI of type of service Service integration is that 1 road CPRI business uses the mapping mode of AGMP to be mapped to route ts again2Individual (with ODTU.ts in figure in the ODTU of time slot composition2Illustrate)；By miRoad uses identical clock Source and the identical CPRI service integration of type of service are that 1 road CPRI business uses reflecting of AGMP again The mode of penetrating is mapped to route tsi(with ODTU.ts in figure in the ODTU of individual time slot compositioniIllustrate) In；Again multichannel ODTU is multiplexed in 1 road OPU.
As the refinement to method shown in Fig. 4, owing to the speed of the front single time slot of coding is relative to coding The least, thus can be by band a width of CPRI Option of single time slot in described optical channel Payload Unit Bandwidth before 1 coding, namely 491.52Mbit/s；And CPRI business to be lifted generally coding After business to CPRI business to be lifted first be decoded process.Thus, step The m road CPRI business received " is mapped to m road optical channel in man-to-man mode by rapid 102 In data tributary unit " before, as shown in figure 15, described method also includes:
601: described m road CPRI business to be lifted is decoded, obtain decoded described M road CPRI business.
This decoding process is and the inverse process of the coded system shown in table 1.Available inhomogeneity after decoding The CPRI business of type, following table table 3 gives the CPRI base that different types of CPRI business is corresponding Codeword size that this frame is comprised and basic frame sign:
Table 3
Basic frame sign according to the various types of CPRI business shown in table 3 and basic frame rate The speed of each type of CPRI business can be obtained, its be consistent shown in table 1
Additionally, due to CPRI business to be lifted is decoded, open so that increase pointer Pin information is with the start frame position in ODTU of instruction CPRI business.Thus, as Fig. 4 institute Show the refinement of method, " by the m road CPRI business that receives with man-to-man side in step 102 Formula is mapped in the optical channel data tributary unit of m road " while, as shown in figure 16, described method Also include:
701: generate the pointer overhead information corresponding with CPRI business described in every road, described finger respectively Pin Overhead is for indicating the start frame of CPRI business described in decoded every road described in correspondence The position of optical channel data tributary unit.
702: respectively described pointer overhead information is stored to corresponding optical channel data tributary unit Overhead area.
In the implementing of this step, 256 CPRI basic frames one CPRI of composition of continuous print Superframe, the first basic frame of frame CPRI namely start frame of CPRI superframe, record this start frame and exist The position of ODTU and generate pointer overhead information (English: Basic Frame Pointer, be called for short: BFP)。
Wherein, pointer overhead information can be positioned over the overhead area of ODTU, as shown in figure 17, for ODTU each time slot 2 bytes of division are the overhead area of each time slot, if ODTU includes ts Individual time slot, then corresponding overhead area includes 2*ts byte altogether, can be used for placing pointer overhead information； Remaining part is then for mapping the payload section of this CPRI business.Additionally, figure also show for putting Put the JC1 to JC6 of mapping cost, with ODTU.ts, figure represents that ODTU is made up of ts time slot.
Replacement as step 702, it is also possible to respectively described pointer overhead information is stored to described light In the multiplexing structure instruction of passage Payload Unit.As shown in figure 18, this process includes:
801: generate the pointer overhead information corresponding with CPRI business described in every road, described finger respectively Pin Overhead is for indicating the start frame of CPRI business described in decoded every road described in correspondence The position of optical channel data tributary unit.
802: respectively described pointer overhead information is stored the multiplexing knot to described optical channel Payload Unit In structure instruction.
As shown in figure 19, based on 256 multi-frames being made up of 256 frame OPU, pointer overhead is believed Breath is positioned over MSI.In this case, compared with corresponding two bytes of time slot each with Figure 12, this Time corresponding 4 bytes of each time slot, the first two byte again indicates that the occupied situation of this TS； Latter two byte is used for placing pointer overhead information.So can directly CPRI business be mapped into The whole payload section of ODTU.
Additionally, described part for placing pointer overhead (overhead area of ODTU or OPU's MSI), being additionally operable to add Time delay measurement expense, described Time delay measurement expense is used for recording CPRI frame Device interior process and line transmission time delay.
Except the overhead area of the above-mentioned overhead area at ODTU or OPU increases pointer overhead information Mode indicates the position of CPRI start frame, it is also possible to increased by the start frame for CPRI business Frame head instruction expense indicates the position of CPRI start frame.Then in the step 102 " m that will receive Road CPRI business is mapped to m road optical channel data tributary unit in man-to-man mode " before, as Shown in Figure 20, described method also includes:
901: add the CPRI start frame frame headers overhead corresponding with every road CPRI business, institute respectively State CPRI start frame frame headers overhead at least to include for indicating the start frame of CPRI business described in every road Frame head instruction information in the position of corresponding described optical channel data tributary unit.
This step performs after step 601, naturally it is also possible to do not perform step 601.
Also it is introduced into the CPRI business that optical transfer network carries out carrying to be carried by the basic frame of CPRI, 256 basic frames of CPRI constitute a CPRI superframe, first CPRI in CPRI superframe Basic frame can be referred to as again CPRI start frame, and CPRI business correspondence in every road is one or more continuously CPRI superframe.
Wherein, this frame headers overhead specifically can comprise CPRI start frame frame head instruction, check information with And propagation delay time measurement expense etc..As shown in figure 21,8 are contained before each 256-CPRI superframe Byte overhead information, comprise 4 byte CPRI superframe frame heads instruction (such as 0xf6f62828), 1 The BIP8 verification of byte, delay measurements expense LC1 of 2 bytes and LC2,1 byte is reserved word Joint.
As shown in figure 22, the CPRI that with the addition of frame headers overhead is surpassed frame data stream to be directly mapped into ODTU。
Corresponding to three shown in Figure 16, Figure 18 and Figure 20 kind mode, the speed of OTUXIIn is permissible Precise Representation is as shown in table 4 further.Wherein mode one, due in the payload section that ODTU is original Add the overhead area of 2n byte, be used for placing pointer overhead information, corresponding 2 words of each time slot Joint overhead area, so by (15232/15230)2* the calculated value of 491.52Mbit/s as time The bandwidth of gap；Mode two is owing to being positioned over OPU overhead area by pointer overhead information and vacant The payload section that ODTU is original, thus calculated by (15232/15230) * 491.52Mbit/s It is worth the primary bandwidth as time slot；Mode three, owing to directly increasing on the basis of each CPRI superframe Add 8 byte frame header overhead information, so selection 492.5Mbit/s is as the primary bandwidth of time slot, 491.52Mbit/s relatively improves a point velocity, it is ensured that ODTU can carry and add CPRI superframe The CPRI business of frame head instruction information.
Table 4
If it should be noted that the bandwidth of single time slot is set as CPRI Option 1 in OPU Bandwidth (614.4Mbit/s) before coding, then without being decoded CPRI business processing, accordingly The pointer without the positional information increased for indicating CPRI start frame corresponding to CPRI business Expense or frame headers overhead.
During actual Deta bearer, only data are finally encapsulated as OTU frame structure ability It is sent to receiving terminal by transmitting terminal.Thus, as supplementing of method shown in Fig. 4, " will in step 103 The m road optical channel data tributary unit carrying described CPRI business is multiplexed into optical channel Payload Unit Time slot in " after, as shown in figure 23, described method also includes:
1001: the described optical channel Payload Unit carrying described m road CPRI business is added light Channel transmission element expense, constitutes optical channel transmission unit.
Owing to CPRI business to be lifted is to be sent between RRU/BBU by BBU/RRU, Transmit for point-to-point one, thus ODU Overhead need not be increased, can directly increase OTU Expense forms OTU.
It is of course also possible to after increasing ODU expense formation ODU, be further added by OTU expense and formed OTU, thus as the replacement of step 1001, as shown in figure 24, described method also includes:
1101: the described optical channel Payload Unit carrying described m road CPRI business is added light Channel data unit expense, constitutes Optical Channel Data Unit-k.
1102: Optical Channel Data Unit-k is added optical channel transmission unit expense, constitute optical channel transmission Unit.
As the concrete application of said method, as shown in figure 25, with a width of coding of the band of single time slot After 614.4Mbit/s as a example by, embodiments provide a kind of concrete mapping process.If CPRI business to be lifted includes each 1 tunnel of CPRI3, CPRI7, CPRI8.Then compile based on CPRI After Ma, basic rate structure OPU carries out Deta bearer, the most about 40 times basic rates, thus comprises 40 time slots.
Wherein, CPRI3 takies wherein 4 time slots, such as: TS1.1, TS2.1, TS1.8, TS2.8； CPRI7 takies 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 takies 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。
Corresponding with the Deta bearer process of transmitting terminal, the embodiment of the present invention additionally provides a kind of data solution The method of analysis, described method is applied to the receiving terminal in optical transfer network, as shown in figure 26, described side Method includes:
1201: the information carried according to the overhead area of described optical channel Payload Unit, obtain described light and lead to The type of service of road Payload Unit carrying.
1202: when described type of service is the CPRI mixed service including m road CPRI business, Determine and described m road CPRI business m road optical channel data tributary unit one to one.
1203: according to the mapping cost information carried in optical channel data tributary unit described in every road, right Every road optical channel data tributary unit carries out demapping process, obtains every road CPRI business corresponding extremely Few two basic frames of CPRI.
1204: the positional information of the CPRI start frame that the CPRI business described in every road that obtains is corresponding, To the basic frame of all CPRI started from described CPRI start frame, described CPRI start frame is One basic frame of CPRI.
The method of the data parsing that the embodiment of the present invention provides, with the method phase of the Deta bearer of transmitting terminal It is corresponding, it is only necessary to a demapping, it is possible to reduce the time delay required for demapping, it is thus possible to Realize the efficient rapid extraction of CPRI business.
Wherein, as the refinement of method shown in Figure 26, step 1201 is " according to described optical channel payload The information that the overhead area of unit is carried, obtains the type of service of described optical channel Payload Unit carrying ", As shown in figure 27, specifically include:
1301: obtain the payload type instruction information that the overhead area of described optical channel Payload Unit is carried, Indicate information according to described payload type, obtain the type of service of described optical channel Payload Unit carrying.
Wherein, as the refinement of method shown in Figure 26, step 1202 " determines and described m road CPRI Business n road optical channel data tributary unit one to one ", as shown in figure 28, specifically include:
1401: obtain the payload structure instruction information that the overhead area of described optical channel Payload Unit is carried, According to described payload structure instruction information obtain each time slot of described optical channel Payload Unit whether by Take and the type of CPRI business of occupied time slot carrying and the mark of CPRI business.
1402: each time slot according to described optical channel Payload Unit is the most occupied and occupied The type of the CPRI business of time slot carrying and the mark of CPRI business, identify and described m road CPRI Business m road optical channel data tributary unit one to one.
Wherein, as the refinement of method shown in Figure 26, step 1203 is " according to optical channel described in every road The mapping cost information carried in data tributary unit, solves every road optical channel data tributary unit Mapping processes, and obtains the basic frame of at least two CPRI that every road CPRI business is corresponding ", such as Figure 29 Shown in, specifically include:
1501: according to the mapping cost information carried in optical channel data tributary unit described in every road, Clock source information to corresponding every road CPRI business.
1502: if described CPRI business be described reference clock business or with described reference clock Business uses the CPRI business of identical clock source, then map code by bit synchronous or synchronize logical With mapping code, corresponding optical channel data tributary unit is carried out demapping process.
1503: if described CPRI business is to use different clocks source with described reference clock business CPRI business, then map code by async-generic and carry out corresponding optical channel data tributary unit Demapping processes.
As the refinement of method shown in Figure 26, step 1204 " obtains CPRI business described in every road The positional information of corresponding CPRI start frame ", specially obtain the finger that every road CPRI business is corresponding Pin Overhead, obtains the positional information of CPRI start frame corresponding to CPRI business described in every road. And then, step 1204 " the position letter of the CPRI start frame that the CPRI business described in every road that obtains is corresponding Breath, obtains the basic frame of all CPRI started from described CPRI start frame ", as shown in figure 30, Specifically include:
1601: obtain the pointer overhead information that every road CPRI business is corresponding, obtain CPRI described in every road The positional information of the CPRI start frame that business is corresponding, and then obtain from described CPRI start frame The basic frame of all CPRI, described CPRI start frame is first basic frame of CPRI.
Or in step 1204 " the CPRI start frame that the CPRI business described in every road that obtains is corresponding Positional information ", specially identify the CPRI start frame frame headers overhead that every road CPRI business is corresponding, Obtain the positional information of CPRI start frame corresponding to CPRI business described in every road.And then, step 1204 " positional information of the CPRI start frame that the CPRI business described in every road that obtains is corresponding, obtains from described The basic frame of all CPRI that CPRI start frame starts ", as shown in figure 31, specifically include:
1701: identify the CPRI start frame frame headers overhead that every road CPRI business is corresponding, obtain every road The positional information of the CPRI start frame that described CPRI business is corresponding, and then obtain from described CPRI The basic frame of all CPRI that start frame starts, described CPRI start frame is that first CPRI is basic Frame.
Supplementing as method shown in Figure 26, step 1204 " obtains CPRI business pair described in every road The positional information of the CPRI start frame answered, obtains all CPRI started from described CPRI start frame Basic frame " after, as shown in figure 32, described method also includes:
1801: the basic frame of all CPRI that CPRI business described in every road is corresponding is carried out coded treatment.
During the implementing of this step, if original CPRI business is understood by transmitting terminal Code processes, then relative with transmitting terminal, receiving terminal needs CPRI business is carried out coded treatment, such as: CPRI option1-7 business carries out the coded system of 8B/10B, and CPRI option8 business is carried out 64B/66B coded treatment.
Furthermore, it is necessary to supplement, if transmitting terminal has carried out packet and according to dividing to CPRI business Group maps, then need the often group multichannel CPRI serial bit stream that demapping is gone out carry out bit or Byte demultiplexing process, it is thus achieved that multichannel CPRI business.
As the implementing of each method of above-mentioned Deta bearer, the embodiment of the present invention additionally provides one The device of kind of Deta bearer, described device is applied to the transmitting terminal in optical transfer network, as shown in figure 33, Described device includes:
Receive unit 101, be used for receiving m road common public radio interface CPRI business, wherein, M is the integer more than 1.
Map unit 102, for mapping the m road CPRI business received in man-to-man mode In the optical channel data tributary unit of m road.
Multiplexing Unit 103, for carrying the m road optical channel data branch road of described CPRI business Unit multiplexed in the time slot of optical channel Payload Unit；
Wherein, the speed of described time slot is equal to CPRI basic rate.
Further, as shown in figure 34, described device also includes processing unit 201, for basis The speed of CPRI business described in every road and the speed of single described time slot, determine described m road CPRI First quantity of the time slot required for business；
Choose the described optical channel Payload Unit of the time slot comprising described first quantity.
Further, the described optical channel Payload Unit that described processing unit 201 is chosen is n times to be preset The optical channel Payload Unit of speed, the optical channel Payload Unit of described n times of scheduled rate is led to by n light Road Payload Unit logic branch road is formed according to default byte intertexture division multiplexing；
Single described optical channel Payload Unit logic branch road includes overhead area and payload section, and payload section includes The described time slot of the second predetermined number；
The value of described n determines according to the ratio of described first quantity with the second quantity.
Further, described map unit 102, specifically for: by CPRI business described in the first via Being defined as reference clock business, described first via CPRI business is described at least two-way CPRI business In any one road；
By described reference clock business and with the described reference clock identical clock source of business employing CPRI business maps code by bit synchronous or synchronizes general mapping code and map one to one Enter in described optical channel data tributary unit；
Reflected using the CPRI business in different clocks source with described reference clock business by async-generic Penetrate code to be mapped into one to one in described optical channel data tributary unit.
Further, described Multiplexing Unit 103, it is additionally operable to:
Payload class is increased in the overhead area of the frame structure of the optical channel Payload Unit that value is 0 of multi-frame instruction Type indicates, and the instruction of described payload type is for representing the business that described optical channel Payload Unit currently carries Type is multichannel CPRI business；
Value in multi-frame instruction is the frame structure of the optical channel Payload Unit of the maximum of 2 to multi-frame instruction Overhead area increase multiplexing structure instruction, the multiplexing structure instruction of two adjacent frames is when being used for representing current Gap is the most occupied, CPRI type of service, CPRI business or the CPRI industry of current time slots carrying The mark of business group.
Further, as shown in figure 35, described device also includes grouped element 301, specifically for:
At least one identical to the identical clock source of employing and type of service road CPRI business is defined as one group Business；
When the one group of business determined includes at least two-way CPRI business, by described at least two-way CPRI service bits or byte are multiplexed with a road serial bit stream.
Further, in described optical channel Payload Unit, band a width of CPRI option one of single time slot is compiled Bandwidth before Ma；As shown in figure 36, described device also includes decoding unit 401, for entertaining The described m road CPRI business carried is decoded, and obtains decoded described m road CPRI business.
Further, described map unit 102, it is additionally operable to:
Generate the pointer overhead information corresponding with CPRI business described in every road, described pointer overhead respectively Information is for indicating the start frame of CPRI business described in decoded every road at corresponding described optical channel The position of data tributary unit；
Respectively described pointer overhead information is stored the expense to corresponding optical channel data tributary unit District；
Further, described map unit 102, it is additionally operable to generate respectively and CPRI industry described in every road The pointer overhead information that business is corresponding, described pointer overhead information is used for indicating described in decoded every road The start frame of CPRI business is in the position of corresponding described optical channel data tributary unit；
The multiplexing structure described pointer overhead information stored respectively to described optical channel Payload Unit refers to In showing.
Further, described processing unit 201, it is additionally operable to add respectively and every road CPRI business pair The CPRI start frame frame headers overhead answered, described CPRI start frame frame headers overhead at least includes for referring to The start frame of CPRI business described in Shi Mei road is in the position of corresponding described optical channel data tributary unit Frame head instruction information.
Further, described Multiplexing Unit 103, it is additionally operable to will carry described m road CPRI business Described optical channel Payload Unit add optical channel transmission unit expense, constitute optical channel transmission unit；
Or
The described optical channel Payload Unit carrying described m road CPRI business is added optical channel data Unit expense, constitutes Optical Channel Data Unit-k；Optical Channel Data Unit-k is added optical channel transmission unit Expense, constitutes optical channel transmission unit.
The device of the Deta bearer that the present invention provides, after receiving n road CPRI business, directly will N road CPRI business maps multiplexing in OPU, with prior art, needs CPRI business first First being mapped in low order ODU and re-map multiplexing and compare to high-order OPU, the present invention uses one-level to reflect Penetrate the carrying that just can realize CPRI business, it is possible to reduce because two-stage maps the time delay brought, and then It is capable of the quick carrying of CPRI business.
As the concrete application of above-mentioned data analysis method, the embodiment of the present invention additionally provides data parsing Device, described device is applied to the receiving terminal in optical transfer network, described optical transfer network include light lead to Road Payload Unit, described optical channel Payload Unit includes at least one time slot, the band of single described time slot A width of common public radio interface CPRI basic rate, as shown in figure 37, described device includes:
Acquiring unit 601, for the information carried according to the overhead area of described optical channel Payload Unit, Obtain the type of service of described optical channel Payload Unit carrying.
Determine unit 602, be used for when described type of service is to include the CPRI of m road CPRI business During mixed service, determine and prop up with described m road CPRI business m road optical channel data one to one Road unit.
De-mapping unit 603, for according to reflecting of carrying in optical channel data tributary unit described in every road Penetrate Overhead, every road optical channel data tributary unit is carried out demapping process, obtains every road CPRI The basic frame of at least two CPRI that business is corresponding.
Described acquiring unit 601, the CPRI being additionally operable to obtain CPRI business described in every road corresponding rises The positional information of beginning frame, obtains the basic frame of all CPRI started from described CPRI start frame, institute Stating CPRI start frame is first basic frame of CPRI.
Further, described acquiring unit 601, specifically for:
Obtain the payload type instruction information that the overhead area of described optical channel Payload Unit is carried, according to institute State payload type instruction information, obtain the type of service of described optical channel Payload Unit carrying.
Further, described determine unit 602, specifically for:
Obtain the payload structure instruction information that the overhead area of described optical channel Payload Unit is carried, according to institute State payload structure instruction information obtain each time slot of described optical channel Payload Unit the most occupied with And the type of the CPRI business of occupied time slot carrying and the mark of CPRI business；
The most occupied and the occupied time slot of each time slot according to described optical channel Payload Unit The type of the CPRI business of carrying and the mark of CPRI business, identify and described m road CPRI industry It is engaged in m road optical channel data tributary unit one to one.
Further, described de-mapping unit 603, specifically for:
According to the mapping cost information carried in optical channel data tributary unit described in every road, obtain correspondence The clock source information of every road CPRI business；
When described CPRI business is described reference clock business or uses with described reference clock business During the CPRI business of identical clock source, map code by bit synchronous or synchronize general to map rule Journey carries out demapping process to corresponding optical channel data tributary unit；
When described CPRI business is and the CPRI industry in described reference clock business employing different clocks source During business, map code by async-generic and corresponding optical channel data tributary unit is carried out at demapping Reason.
Further, described acquiring unit 601, specifically it is additionally operable to:
Obtain the pointer overhead information that every road CPRI business is corresponding, obtain CPRI business described in every road The positional information of corresponding CPRI start frame；
Or
Identify the CPRI start frame frame headers overhead that every road CPRI business is corresponding, obtain described in every road The positional information of the CPRI start frame that CPRI business is corresponding.
Further, as shown in figure 38, described device also includes: coding unit 701, for right The basic frame of all CPRI that often CPRI business described in road is corresponding carries out coded treatment.
The device of the data parsing that the present invention provides, corresponding with the method for the Deta bearer of transmitting terminal, Only need a demapping, it is possible to reduce the time delay required for demapping, it is thus possible to realize The efficient rapid extraction of CPRI business.
As the implementing of method of above-mentioned Deta bearer, the embodiment of the present invention additionally provides a kind of number According to the device of carrying, described device is applied to the transmitting terminal in optical transfer network, and described device, such as Figure 39 Shown in, including receptor 801, memorizer 802, processor 803, emitter 804 and bus 805, Receptor 801, memorizer 802, processor 803 and emitter 804 are connected by bus 805, Wherein:
Receptor 801, is used for receiving m road common public radio interface CPRI business, wherein, m For the integer more than 1.
Memorizer 802, maps in man-to-man mode for the m road CPRI business just received In the optical channel data tributary unit of m road.
Memorizer 802, is additionally operable to carry the m road optical channel data branch road of described CPRI business Unit multiplexed in the time slot of optical channel Payload Unit；Wherein, the speed of described time slot is equal to CPRI Basic rate.
Further, described processor 803, for according to the speed of CPRI business described in every road and The speed of single described time slot, determines the first quantity of time slot required for the CPRI business of described m road；
Choose the described optical channel Payload Unit of the time slot comprising described first quantity.
Further, the described optical channel Payload Unit that described processor 803 is chosen is n times and presets speed The optical channel Payload Unit of rate, the optical channel Payload Unit of described n times of scheduled rate is by n optical channel Payload Unit logic branch road is formed according to default byte intertexture division multiplexing；Single described optical channel Payload Unit Logic branch road includes overhead area and payload section, and payload section includes the described time slot of the second predetermined number；Institute The value stating n determines according to the ratio of described first quantity with the second quantity.
Further, described processor 803, it is additionally operable to be defined as CPRI business described in the first via Reference clock business, described first via CPRI business be described at least appointing in two-way CPRI business Anticipate a road.
Described memorizer 802, be additionally operable to by described reference clock business and with described reference clock industry Business uses the CPRI business of identical clock source map code by bit synchronous or synchronize general mapping Code is mapped in described optical channel data tributary unit one to one；
Reflected using the CPRI business in different clocks source with described reference clock business by async-generic Penetrate code to be mapped into one to one in described optical channel data tributary unit.
Further, described memorizer 802, leads to also particularly useful for the light that the value indicated at multi-frame is 0 The overhead area of the frame structure of road Payload Unit increases payload type instruction, and the instruction of described payload type is used for Represent that the type of service that described optical channel Payload Unit currently carries is multichannel CPRI business；
Value in multi-frame instruction is the frame structure of the optical channel Payload Unit of the maximum of 2 to multi-frame instruction Overhead area increase multiplexing structure instruction, the multiplexing structure instruction of two adjacent frames is when being used for representing current Gap is the most occupied, CPRI type of service, CPRI business or the CPRI industry of current time slots carrying The mark of business group.
Further, described processor 803 is additionally operable to: will use identical clock source and type of service phase At least one same road CPRI business is defined as one group of business；
When the one group of business determined includes at least two-way CPRI business, by described at least two-way CPRI service bits or byte are multiplexed with a road serial bit stream.
Further, in described optical channel Payload Unit, band a width of CPRI option one of single time slot is compiled Bandwidth before Ma；Described processor 801, is additionally operable to enter described m road CPRI business to be lifted Row decoding, obtains decoded described m road CPRI business.
Further, described memorizer 802, it is additionally operable to generate respectively and CPRI business described in every road Corresponding pointer overhead information, described pointer overhead information is used for indicating described in decoded every road The start frame of CPRI business is in the position of corresponding described optical channel data tributary unit；
Respectively described pointer overhead information is stored the expense to corresponding optical channel data tributary unit District.
Further, described memorizer 802, it is additionally operable to generate respectively and CPRI business described in every road Corresponding pointer overhead information, described pointer overhead information is used for indicating described in decoded every road The start frame of CPRI business is in the position of corresponding described optical channel data tributary unit；
The multiplexing structure described pointer overhead information stored respectively to described optical channel Payload Unit refers to In showing.
Further, described processor 803, it is additionally operable to add respectively corresponding with every road CPRI business CPRI start frame frame headers overhead, described CPRI start frame frame headers overhead at least includes for indicating Described in every road, the start frame of CPRI business is in the position of corresponding described optical channel data tributary unit Frame head instruction information.
Further, described memorizer 802, it is additionally operable to opening at described optical channel data tributary unit Time delay measurement expense is added in the multiplexing structure instruction of area in which the goods are in great demand or described optical channel Payload Unit.
Further, described memorizer 802, it is additionally operable to will carry described m road CPRI business Described optical channel Payload Unit adds optical channel transmission unit expense, constitutes optical channel transmission unit；
Or
The described optical channel Payload Unit carrying described m road CPRI business is added optical channel data Unit expense, constitutes Optical Channel Data Unit-k；Optical Channel Data Unit-k is added optical channel transmission unit Expense, constitutes optical channel transmission unit.
Described emitter 804 is for passing through optical fiber by the optical channel transmission unit carrying CPRI business Send to transmitting terminal.
Described memorizer 802 also stored for code required during processor 803 performs.
The device of the Deta bearer that the present invention provides, after receiving n road CPRI business, directly will N road CPRI business maps multiplexing in OPU, with prior art, needs CPRI business first First being mapped in low order ODU and re-map multiplexing and compare to high-order OPU, the present invention uses one-level to reflect Penetrate the carrying that just can realize CPRI business, it is possible to reduce because two-stage maps the time delay brought, and then It is capable of the quick carrying of CPRI business.
As the concrete application of the method for above-mentioned data parsing, the embodiment of the present invention additionally provides a kind of number According to the device resolved, described method is applied to the receiving terminal in optical transfer network, and described device, such as Figure 40 Shown in, including receptor 901, processor 902, memorizer 903 and bus 904, receptor 901, Processor 902, memorizer 903 are connected, wherein by bus 904:
Described receptor 901, the optical channel carrying CPRI business sent for receiving end/sending end Transmission unit.
Described processor 902, is used for resolving described optical channel transmission unit and can obtain optical channel payload Unit.
Described processor 902, is additionally operable to the letter that the overhead area according to described optical channel Payload Unit is carried Breath, obtains the type of service of described optical channel Payload Unit carrying；
When described type of service is the CPRI mixed service including m road CPRI business, determine with Described m road CPRI business m road optical channel data tributary unit one to one；
According to the mapping cost information carried in optical channel data tributary unit described in every road, to every road light Channel data tributary unit carries out demapping process, obtains at least two that every road CPRI business is corresponding The basic frame of CPRI；
The positional information of the CPRI start frame that the CPRI business described in every road that obtains is corresponding, obtains from institute Stating the basic frame of all CPRI that CPRI start frame starts, described CPRI start frame is first The basic frame of CPRI.
Further, described processor 901, it is additionally operable to obtain the expense of described optical channel Payload Unit The payload type instruction information that district carries, indicates information according to described payload type, obtains described light and lead to The type of service of road Payload Unit carrying.
Further, described processor 901, it is additionally operable to obtain the expense of described optical channel Payload Unit The payload structure instruction information that district carries, obtains described optical channel according to described payload structure instruction information The class of the CPRI business of each time slot the most occupied and occupied time slot carrying of Payload Unit Type and the mark of CPRI business；
The most occupied and the occupied time slot of each time slot according to described optical channel Payload Unit The type of the CPRI business of carrying and the mark of CPRI business, identify and described m road CPRI industry Business has the optical channel data tributary unit of identical way.
Further, described processor 901, it is additionally operable to according to optical channel data branch road list described in every road The mapping cost information carried in unit, obtains the clock source information of every road CPRI business of correspondence；
If described CPRI business is described reference clock business or adopts with described reference clock business By the CPRI business of identical clock source, then map code by bit synchronous or synchronize general mapping Code carries out demapping process to corresponding optical channel data tributary unit；
If described CPRI business is and the CPRI in described reference clock business employing different clocks source Business, then map code by async-generic and corresponding optical channel data tributary unit carried out demapping Process.
Further, described processor 901, it is additionally operable to obtain the pointer that every road CPRI business is corresponding Overhead, obtains the positional information of CPRI start frame corresponding to CPRI business described in every road.
Or
Identify the CPRI start frame frame headers overhead that every road CPRI business is corresponding, obtain described in every road The positional information of the CPRI start frame that CPRI business is corresponding.
Further, described processor 901, it is additionally operable to the institute corresponding to CPRI business described in every road The basic frame of CPRI is had to carry out coded treatment.
Described memorizer 903 is additionally operable to store code required during processor 902 performs.
The device of the data parsing that the present invention provides, corresponding with the method for the Deta bearer of transmitting terminal, Only need a demapping, it is possible to reduce the time delay required for demapping, it is thus possible to realize The efficient rapid extraction of CPRI business.
It should be noted that the processor 803 and 902 described in the embodiment of the present invention can be at one Reason device, it is also possible to be the general designation of multiple treatment element.Such as, this processor 801 and 901 can be Central processing unit (Central Processing Unit is called for short CPU), it is also possible to be specific integrated Circuit (Application Specific Integrated Circuit is called for short ASIC), or joined It is set to implement one or more integrated circuits of the embodiment of the present invention, such as: one or more micro-process Device (digital signal processor is called for short DSP), or, one or more scene can be compiled Journey gate array (Field Programmable Gate Array is called for short FPGA).
Memorizer 802 and 903 can be a storage device, it is also possible to be the system of multiple memory element Claim, and be used for storing executable program code etc..And memorizer 802 and 903 can include depositing at random Reservoir (RAM), it is also possible to include nonvolatile memory (non-volatile memory), example Such as disk memory, 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 extended industry-standard architecture (Extended Industry Standard Architecture, EISA) bus etc..This bus 805 and 904 can be divided into address bus, number According to bus, control bus etc..For ease of representing, Figure 39 and Figure 40 only represents with a thick line, It is not intended that only a bus or a type of bus.
Through the above description of the embodiments, those skilled in the art is it can be understood that arrive The present invention can add the mode of required common hardware by software and realize, naturally it is also possible to by firmly Part, but a lot of in the case of the former is more preferably embodiment.Based on such understanding, the skill of the present invention The part that prior art is contributed by art scheme the most in other words can be with the form of software product Embodying, this computer software product is stored in the storage medium that can read, soft such as computer Dish, hard disk or CD etc., including some instructions with so that a computer equipment (can be individual Computer, server, or the network equipment etc.) perform the method described in each embodiment of the present invention.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention not office Being limited to this, any those familiar with the art, can in the technical scope that the invention discloses Readily occur in change or replace, all should contain within protection scope of the present invention.

Claims (37)

1. the method for a Deta bearer, it is characterised in that described method includes:
Receiving m road common public radio interface CPRI business, wherein, m is the integer more than 1；
In man-to-man mode, the m road CPRI business received is mapped to m road optical channel data prop up In the unit of road；
The m road optical channel data tributary unit carrying described CPRI business is multiplexed into optical channel payload In the time slot of unit；
Wherein, the speed of described time slot is equal to CPRI basic rate.
Method the most according to claim 1, it is characterised in that
Described the m road CPRI business received is mapped to m road optical channel number in man-to-man mode Before in tributary unit, described method also includes:
Speed according to CPRI business described in every road and the speed of single described time slot, determine described m road First quantity of the time slot required for CPRI business；
Choose the described optical channel Payload Unit of the time slot comprising described first quantity.
Method the most according to claim 2, it is characterised in that the described optical channel payload chosen Unit is the optical channel Payload Unit of n times of scheduled rate, the optical channel payload list of described n times of scheduled rate Unit is formed according to default byte intertexture division multiplexing by n optical channel Payload Unit logic branch road；
Single described optical channel Payload Unit logic branch road includes overhead area and payload section, and payload section includes The described time slot of two predetermined numbers；
The value of described n determines according to the ratio of described first quantity with the second quantity.
Method the most according to claim 3, it is characterised in that
Described scheduled rate is 10Gbit/s or 12Gbit/s.
5. according to the method described in any one of claim 1-4, it is characterised in that described will receive M road CPRI business be mapped in the optical channel data tributary unit of m road in man-to-man mode, tool Body includes:
CPRI business described in the first via is defined as reference clock business, described first via CPRI business For any one road in described at least two-way CPRI business；
By described reference clock business and with the CPRI of the described reference clock identical clock source of business employing Business maps code by bit synchronous or synchronizes general mapping code and be mapped into described one to one In optical channel data tributary unit；
Mapped using the CPRI business in different clocks source with described reference clock business by async-generic Code is mapped in described optical channel data tributary unit one to one.
6. according to the method described in any one of claim 1-5, it is characterised in that described will carry The m road optical channel data tributary unit of described CPRI business is multiplexed in the time slot of optical channel Payload Unit While, described method also includes:
Payload class is increased in the overhead area of the frame structure of the optical channel Payload Unit that value is 0 of multi-frame instruction Type indicates, and the instruction of described payload type is for representing the service class that described optical channel Payload Unit currently carries Type is multichannel CPRI business；
Value in multi-frame instruction is the frame structure of the optical channel Payload Unit of the maximum of 2 to multi-frame instruction Overhead area increase multiplexing structure instruction, two adjacent frames multiplexing structure instruction be used for representing current time slots The most occupied, CPRI type of service, CPRI business or the CPRI service groups of current time slots carrying Mark.
7. according to the method described in any one of claim 1-6, it is characterised in that described will receive M road CPRI business be mapped in the optical channel data tributary unit of m road in man-to-man mode before, Described method also includes:
At least one identical to the identical clock source of employing and type of service road CPRI business is defined as one group of industry Business；
If it is determined that one group of business include at least two-way CPRI business, then by described at least two-way CPRI service bits or byte are multiplexed with a road serial bit stream.
8. according to the method described in any one of claim 1-7, it is characterised in that described optical channel is clean In lotus unit single time slot with a width of CPRI option one encode before bandwidth；
Described described at least two-way CPRI business is respectively mapped to have identical with described CPRI business Before in the described optical channel data tributary unit of way, described method also includes:
Described m road CPRI business to be lifted is decoded, obtains decoded described m road CPRI business.
9. according to the method described in any one of claim 1-8, it is characterised in that described will receive M road CPRI business with man-to-man mode be mapped in the optical channel data tributary unit of m road same Time, described method also includes:
Generating the pointer overhead information corresponding with CPRI business described in every road respectively, described pointer overhead is believed Breath is for indicating the start frame of CPRI business described in decoded every road in corresponding described optical channel data The position of tributary unit；
Respectively described pointer overhead information is stored the overhead area to corresponding optical channel data tributary unit.
10. according to the method described in any one of claim 1-8, it is characterised in that described will receive M road CPRI business with man-to-man mode be mapped in the optical channel data tributary unit of m road same Time, described method also includes:
Generating the pointer overhead information corresponding with CPRI business described in every road respectively, described pointer overhead is believed Breath is for indicating the start frame of CPRI business described in decoded every road in corresponding described optical channel data The position of tributary unit；
Respectively described pointer overhead information is stored the multiplexing structure instruction to described optical channel Payload Unit In.
11. according to the method described in any one of claim 1-8, it is characterised in that described will receive M road CPRI business be mapped to m road optical channel data tributary unit in man-to-man mode before, Described method also includes:
Add the CPRI start frame frame headers overhead corresponding with every road CPRI business, described CPRI respectively Start frame frame headers overhead at least includes for indicating the start frame of CPRI business described in every road in corresponding institute State the frame head instruction information of the position of optical channel data tributary unit.
12. according to the method described in any one of claim 1-11, it is characterised in that described will carry The m road optical channel data tributary unit of described CPRI business is multiplexed into the time slot of optical channel Payload Unit After in, described method also includes:
The described optical channel Payload Unit carrying described m road CPRI business is added optical channel transmission list Unit's expense, constitutes optical channel transmission unit.
13. according to the method described in any one of claim 1-12, it is characterised in that
Described CPRI basic rate is the multiple of the basic frame rate of CPRI.
14. according to the method described in any one of claim 1-13, it is characterised in that
Described CPRI basic rate is 491.52Mbit/s or 614.4Mbit/s.
The method of 15. data parsings, it is characterised in that described method includes:
The information that overhead area according to described optical channel Payload Unit is carried, obtains described optical channel payload list The type of service of unit's carrying；
When described type of service is the CPRI mixed service including m road CPRI business, determine and institute State m road CPRI business m road optical channel data tributary unit one to one；
According to the mapping cost information carried in optical channel data tributary unit described in every road, to every Lu Guangtong Track data tributary unit carries out demapping process, obtains at least two CPRI that every road CPRI business is corresponding Basic frame；
The positional information of the CPRI start frame that the CPRI business described in every road that obtains is corresponding, obtains from described The basic frame of all CPRI that CPRI start frame starts, described CPRI start frame is first CPRI Basic frame.
The method of 16. data parsings according to claim 15, it is characterised in that
The described information carried according to the overhead area of described optical channel Payload Unit, obtains described optical channel clean The type of service of lotus unit carrying, specifically includes:
Obtain the payload type instruction information that the overhead area of described optical channel Payload Unit is carried, according to described Payload type instruction information, obtains the type of service of described optical channel Payload Unit carrying.
17. according to the method for the data parsing described in claim 15 or 16, it is characterised in that institute State and determine and described m road CPRI business m road optical channel data tributary unit one to one, specifically Including:
Obtain the payload structure instruction information that the overhead area of described optical channel Payload Unit is carried, according to described Payload structure instruction information obtains that each time slot of described optical channel Payload Unit is the most occupied and quilt The type of the CPRI business of the time slot carrying taken and the mark of CPRI business；
The most occupied and the occupied time slot of each time slot according to described optical channel Payload Unit holds The type of the CPRI business carried and the mark of CPRI business, identify and described m road CPRI business one The m road optical channel data tributary unit of one correspondence.
18. according to the method for the data parsing described in any one of claim 15 to 17, and its feature exists In, the mapping cost information carried in optical channel data tributary unit described in the every road of described basis, to every road Optical channel data tributary unit carries out demapping process, obtains at least two that every road CPRI business is corresponding The basic frame of CPRI, specifically includes:
According to the mapping cost information carried in optical channel data tributary unit described in every road, obtain correspondence The clock source information of every road CPRI business；
If described CPRI business is described reference clock business or uses with described reference clock business The CPRI business of identical clock source, then map code by bit synchronous or synchronize general mapping code Corresponding optical channel data tributary unit is carried out demapping process；
If described CPRI business is and the CPRI industry in described reference clock business employing different clocks source Business, then map code by async-generic and carry out corresponding optical channel data tributary unit at demapping Reason.
19. according to the method for the data parsing described in any one of claim 15 to 18, and its feature exists In,
The positional information of the CPRI start frame that CPRI business described in the every road of described acquisition is corresponding, specifically wraps Include:
Obtain the pointer overhead information that every road CPRI business is corresponding, obtain CPRI business pair described in every road The positional information of the CPRI start frame answered；
Or
Identify the CPRI start frame frame headers overhead that every road CPRI business is corresponding, obtain CPRI described in every road The positional information of the CPRI start frame that business is corresponding.
20. according to the method for the data parsing described in any one of claim 15-19, it is characterised in that The positional information of the CPRI start frame that the CPRI business described in every road that obtains is corresponding, obtains from described CPRI After the basic frame of all CPRI that start frame starts, described method also includes:
The basic frame of all CPRI that CPRI business described in every road is corresponding is carried out coded treatment.
The device of 21. 1 kinds of Deta bearers, it is characterised in that described device includes:
Receiving unit, be used for receiving m road common public radio interface CPRI business, wherein, m is Integer more than 1；
Map unit, for being mapped to m by the m road CPRI business received in man-to-man mode In the optical channel data tributary unit of road；
Multiplexing Unit, multiple for the m road optical channel data tributary unit that will carry described CPRI business Use in the time slot of optical channel Payload Unit；
Wherein, the speed of described time slot is equal to CPRI basic rate.
22. devices according to claim 21, it is characterised in that
Described device also includes processing unit, is used for:
Speed according to CPRI business described in every road and the speed of single described time slot, determine described m road First quantity of the time slot required for CPRI business；
Choose the described optical channel Payload Unit of the time slot comprising described first quantity.
23. devices according to claim 22, it is characterised in that described processing unit is chosen Described optical channel Payload Unit is the optical channel Payload Unit of n times of scheduled rate, described n times of scheduled rate Optical channel Payload Unit by n optical channel Payload Unit logic branch road according to default byte intertexture division multiplexing Formed；
Single described optical channel Payload Unit logic branch road includes overhead area and payload section, and payload section includes The described time slot of two predetermined numbers；
The value of described n determines according to the ratio of described first quantity with the second quantity.
24. according to the device described in any one of claim 21-23, it is characterised in that described mapping list Unit, specifically for:
CPRI business described in the first via is defined as reference clock business, described first via CPRI business For any one road in described at least two-way CPRI business；
By described reference clock business and with the CPRI of the described reference clock identical clock source of business employing Business maps code by bit synchronous or synchronizes general mapping code and be mapped into described one to one In optical channel data tributary unit；
Mapped using the CPRI business in different clocks source with described reference clock business by async-generic Code is mapped in described optical channel data tributary unit one to one.
25. according to the device described in any one of claim 21-24, it is characterised in that described multiplexing list Unit, is additionally operable to:
Payload class is increased in the overhead area of the frame structure of the optical channel Payload Unit that value is 0 of multi-frame instruction Type indicates, and the instruction of described payload type is for representing the service class that described optical channel Payload Unit currently carries Type is multichannel CPRI business；
Value in multi-frame instruction is the frame structure of the optical channel Payload Unit of the maximum of 2 to multi-frame instruction Overhead area increase multiplexing structure instruction, two adjacent frames multiplexing structure instruction be used for representing current time slots The most occupied, CPRI type of service, CPRI business or the CPRI service groups of current time slots carrying Mark.
26. according to the device described in any one of claim 21-25, it is characterised in that described device is also Including grouped element, specifically for:
At least one identical to the identical clock source of employing and type of service road CPRI business is defined as one group of industry Business；
When the one group of business determined includes at least two-way CPRI business, by described at least two-way CPRI service bits or byte are multiplexed with a road serial bit stream.
27. according to the device described in any one of claim 21-26, it is characterised in that described optical channel In Payload Unit single time slot with a width of CPRI option one encode before bandwidth；
Described device also includes decoding unit, specifically for:
Described m road CPRI business to be lifted is decoded, obtains decoded described m road CPRI business.
28. according to the device described in any one of claim 21-27, it is characterised in that described mapping list Unit, is additionally operable to:
Generating the pointer overhead information corresponding with CPRI business described in every road respectively, described pointer overhead is believed Breath is for indicating the start frame of CPRI business described in decoded every road in corresponding described optical channel data The position of tributary unit；
Respectively described pointer overhead information is stored the overhead area to corresponding optical channel data tributary unit.
29. according to the device described in any one of claim 21-27, it is characterised in that described mapping list Unit, is additionally operable to:
Generating the pointer overhead information corresponding with CPRI business described in every road respectively, described pointer overhead is believed Breath is for indicating the start frame of CPRI business described in decoded every road in corresponding described optical channel data The position of tributary unit；
Respectively described pointer overhead information is stored the multiplexing structure instruction to described optical channel Payload Unit In.
30. according to the device described in any one of claim 21-27, it is characterised in that described process list Unit, is additionally operable to:
Add the CPRI start frame frame headers overhead corresponding with every road CPRI business, described CPRI respectively Start frame frame headers overhead at least includes for indicating the start frame of CPRI business described in every road in corresponding institute State the frame head instruction information of the position of optical channel data tributary unit.
31. according to the device described in any one of claim 21-30, it is characterised in that described multiplexing list Unit is additionally operable to:
The described optical channel Payload Unit carrying described m road CPRI business is added optical channel transmission list Unit's expense, constitutes optical channel transmission unit.
The device of 32. data parsings, it is characterised in that described device includes:
Acquiring unit, for the information carried according to the overhead area of described optical channel Payload Unit, obtains institute State the type of service of optical channel Payload Unit carrying；
Determine unit, be used for when described type of service is that the CPRI including m road CPRI business mixes industry During business, determine and described m road CPRI business m road optical channel data tributary unit one to one；
De-mapping unit, for according to the mapping cost carried in optical channel data tributary unit described in every road Information, carries out demapping process to every road optical channel data tributary unit, obtains every road CPRI business pair The basic frame of at least two CPRI answered；
Described acquiring unit, is additionally operable to CPRI start frame corresponding to the CPRI business described in every road that obtains Positional information, obtains the basic frame of all CPRI started from described CPRI start frame, described CPRI Start frame is first basic frame of CPRI.
The device of 33. data parsings according to claim 32, it is characterised in that
Described acquiring unit, specifically for:
Obtain the payload type instruction information that the overhead area of described optical channel Payload Unit is carried, according to described Payload type instruction information, obtains the type of service of described optical channel Payload Unit carrying.
34. according to the device of the data parsing described in claim 32 or 33, it is characterised in that institute State and determine unit, specifically for:
Obtain the payload structure instruction information that the overhead area of described optical channel Payload Unit is carried, according to described Payload structure instruction information obtains that each time slot of described optical channel Payload Unit is the most occupied and quilt The type of the CPRI business of the time slot carrying taken and the mark of CPRI business；
The most occupied and the occupied time slot of each time slot according to described optical channel Payload Unit holds The type of the CPRI business carried and the mark of CPRI business, identify and described m road CPRI business one The m road optical channel data tributary unit of one correspondence.
35. according to the device of the data parsing described in any one of claim 32 to 34, and its feature exists In, described de-mapping unit, specifically for:
According to the mapping cost information carried in optical channel data tributary unit described in every road, obtain correspondence The clock source information of every road CPRI business；
When described CPRI business is described reference clock business or uses phase with described reference clock business During with the CPRI business of clock source, map code by bit synchronous or synchronize general mapping code pair Corresponding optical channel data tributary unit carries out demapping process；
When described CPRI business is and the CPRI business in described reference clock business employing different clocks source Time, map code by async-generic and corresponding optical channel data tributary unit is carried out demapping process.
36. according to the device of the data parsing described in any one of claim 32 to 35, and its feature exists In,
Described acquiring unit, specifically for:
Obtain the pointer overhead information that every road CPRI business is corresponding, obtain CPRI business pair described in every road The positional information of the CPRI start frame answered；
Or
Identify the CPRI start frame frame headers overhead that every road CPRI business is corresponding, obtain CPRI described in every road The positional information of the CPRI start frame that business is corresponding.
37. according to the device of the data parsing described in any one of claim 32-36, it is characterised in that Described device also includes coding unit, specifically for:
The basic frame of all CPRI that CPRI business described in every road is corresponding is carried out coded treatment.
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