CN103442447B - Carrier scheduling method and system - Google Patents
Carrier scheduling method and system Download PDFInfo
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- CN103442447B CN103442447B CN201310385143.4A CN201310385143A CN103442447B CN 103442447 B CN103442447 B CN 103442447B CN 201310385143 A CN201310385143 A CN 201310385143A CN 103442447 B CN103442447 B CN 103442447B
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Abstract
The present invention relates to communication technical field, disclose a kind of carrier scheduling method and system, specifically include: building basic processing unit, described basic processing unit is the data of adjacent m the chip of a light mouth, and based on described basic processing unit, RRU data are stored into buffer area, wherein m >=2；Each antenna carrier Binding being carried out serioparallel exchange, produces n channel parallel data, one antenna carrier Binding is continuous n antenna carrier position, wherein n >=2；According to the schedule information being pre-configured with by the RRU data dispatch of described storage to described n channel parallel data.The carrier scheduling method of the present invention and system, use chip to combine CA scheduling strategy, it is possible to reduce the parallel demand of CA under high light mouth speed.
Description
Technical field
The present invention relates to communication technical field, particularly to a kind of carrier scheduling method and system.
Background technology
Fiber optic stretch technology is widely used in wireless access (Universal on global land
Terrestrial Radio Access, UTRAN) system (containing TD-SCDMA and WCDMA)
In, also use in LTE and developed this technology.But it is solid with UTRAN system support
Determining system bandwidth different, LTE supports multiple variable system bandwidth, i.e. includes
1.4M/3M/5M/10M/15M/20M (wherein 10M/15M/20M has various bandwidth pattern
It is widely applied)；And LTE supports multiple MIMO form, and furthermore TDD-LTE supports
Smart antenna, includes penetrating of the multiple channel morphologies such as 1A/2A/4A/8A in TD-LTE equipment
Frequently extension unit (Radio Remote Unit, RRU)；Meanwhile along with optical module/optical fiber
The development of technology, speed supports that the optical module of 10Gbps had entered commercial stage already, and existing network
In also have the optical module of the speed such as a large amount of 1.25G/2.5G/5G/6G to exist, and usually require that new
The access of the compatible existing RRU device of the board introduced, and meet it to LTE single mode or bimodulus
Evolution.The above factor is all that the fiber optic stretch technology in TD-LTE stage adds complexity
Degree.
Carrier dispatching technology is one of core of fiber optic stretch technology, and carrier dispatching technology is by various
The various standards of light mouth speed access and the RRU cell scheduling of antenna configurations are to Base Band Unit
(Base Band Unit, BBU) upper corresponding function processing unit.The design meeting of scheduling feature
Reality is laid form form certain constraint and limit.
The implementation model of existing underlying carrier dispatching technique can with the form being reduced in Fig. 1, with
As a example by 6 light mouths, 2 electric mouths (leading to backboard), RRU data are connected to by 6 light mouths
BBU board, exports IQ(Inphase-Quadrature after serioparallel exchange unit) data
Enter into respective input block, then by master scheduling unit according to schedule information by each light mouth
Data distribution to the buffering area of this plate alignment processing unit and/or the buffering area of backboard scheduling
In.Because at IR(Interface between the RRU and the BBU) at the beginning of agreement only
Defining support 1.25G/2.5G speed, speed is relatively low, and the most existing design is all with 1 chip
Antenna carrier (AC) position that interior light mouth can carry is exchange target.Chip is that a time is single
Position, represents the CA number (sampling) that optical fiber can carry in the timeslice of (1/1.28M) s, light
Mouth speed is the highest, and counting of carrying is the most.BTS management unit is by controlling in a chip
The mapping relations that the AC position of carrying and RRU antenna actual samples are counted reach the mesh of scheduling
's.
In the TD-SCDMA stage, light mouth speed is relatively low, under 1.25G light mouth scene,
Now the total data rate of 6 light mouths is 30b × 184.32M, and the general n of existing scheme is taken as
1.N represents the scheduling that master scheduling unit supports granularity to be 1 TD-SCDMA carrier wave,
Low operating frequency is 184.32MHz.
In the TD-LTE stage, base band sampling rate increases the higher light mouth speed of needs, to work as
As a example by front widely used light mouth speed 5G, existing scheme general n is taken as 4, and this just requires
4 sampled points of single antenna are placed continuously.I.e. master scheduling unit supports that granularity is 4 samplings
The Parallel Scheduling of data, lowest operating frequency is 184.32MHz.
Under given light mouth speed, the granularity of scheduling and the work clock of scheduling unit exist
Mutex relation.If requiring low granularity requirement, then need to improve work clock, if reduced
Work clock then needs to improve granularity.For high light mouth speed, use traditional scheduling unit
Design can limit the selection of scheduling granularity.Existing scheme is when tackling higher light mouth speed, only
The AC degree of parallelism in single chip, these need being difficult to meet LTE bandwidth varying characteristic can be improved merely
Ask, and also having of TD-SCDMA carrier dispatching granularity is limited more by force.
Existing TD-LTE dispatching technique is difficult to effective compatible various bandwidth, with 5G light mouth speed
The design of n=4, now a chip can accommodate 96 sampled points, for the TD-LTE of 20M
System；Producing 24 sampled points in one chip sampling period, now a light mouth can hold
Receive the sampled data of 4 antennas；For the TD-LTE system of 5M, a chip sampling week
Produce 6 sampled points in phase, be now the scheduling of 4 due to scheduling requirement degree of parallelism, adopt for 6
Sampling point needs to occupy 8 AC positions, thus causes the wasting of resources.
Existing TD-SCDMA supports to dispatch from single carrier, but along with the raising of light mouth speed,
The difficulty keeping this scheduling granularity will increase, and along with TD-SCDMA network by
Gradually maturation and H carrier wave, the demand of single carrier scheduling has been substantially not present, and various
When light mouth speed mixing accesses, it is difficult to keep the uniformity of scheduling granularity.
Prior art support shortage is effective to TD-SCMDA and TD-LTE optical fiber/light mouth altogether
Support, need separately to access and scheduling, it is impossible to make full use of the access capability of optical fiber, and right
The access of RRU forms a definite limitation.
Summary of the invention
(1) to solve the technical problem that
The technical problem to be solved in the present invention is: mix in the mixing access of light mouth speed and/or community
When crossed belt width accesses, how to keep the uniformity dispatching granularity.
(2) technical scheme
For solving above-mentioned technical problem, the invention provides a kind of carrier scheduling method, it includes
Step:
Building basic processing unit, described basic processing unit is adjacent m of a light mouth
The data of chip, and based on described basic processing unit, RRU data are stored into buffer area,
Wherein m >=2；
Each antenna carrier Binding is carried out serioparallel exchange, produces n channel parallel data, institute
Stating antenna carrier Binding is continuous n antenna carrier position, wherein n >=2；
According to the schedule information being pre-configured with by the RRU data dispatch of described storage to described n road
Parallel data.
Optionally, described method also includes:
Receive the n channel parallel data after scheduling；
N channel parallel data after the scheduling received is performed parallel-serial conversion.
Optionally, described n=3.
Optionally, described m=2.
Optionally, the first Multiplexing Unit is utilized to carry out described serioparallel exchange.
Optionally, the second Multiplexing Unit is utilized to perform described parallel-serial conversion.
The present invention provides a kind of carrier dispatching system, comprising:
Processing means, is used for building basic processing unit, and will based on described basic processing unit
RRU data are stored into buffer area, and described basic processing unit is adjacent m of a light mouth
The data of chip, wherein m >=2；
Serioparallel exchange device, for each antenna carrier Binding is carried out serioparallel exchange, produces
Raw n channel parallel data, wherein n >=2, described antenna carrier Binding is continuous n antenna
Carrier wave position；
Dispatching device, for by the described RRU data dispatch of storage extremely described n channel parallel data.
Optionally, described system also includes:
Receive device, the n channel parallel data after receiving scheduling；
Parallel-serial conversion device, turns for the n channel parallel data after the scheduling received is performed and gone here and there
Change.
Optionally, described n=3.
Optionally, m=2.
Optionally, described serioparallel exchange device uses the first Multiplexing Unit carry out described string and turn
Change.
Optionally, described parallel-serial conversion device uses the second Multiplexing Unit to perform described and string turn
Change.
(3) beneficial effect
The carrier scheduling method of the present invention and system, use chip to combine CA scheduling strategy, it is possible to
Reduce the parallel demand of CA under high light mouth speed, especially in the case of CA parallel 3, permissible
Efficiently support the most widely used scenes such as 5M/10M/15M/20M.
Accompanying drawing explanation
Fig. 1 is carrier dispatching schematic diagram in prior art；
Fig. 2 is the carrier scheduling method flow chart of the present invention；
Fig. 3 is the scheduling schematic diagram that the 3CA in the present invention combines double chip；
Fig. 4 is the block diagram of a kind of carrier dispatching system in the present invention；
Fig. 5 is the block diagram of the another kind of carrier dispatching system in the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, the detailed description of the invention of the present invention is made the most in detail
Describe.Following example are used for illustrating the present invention, but are not limited to the scope of the present invention.
The present invention proposes one and combines the dispatching party that chip is parallel and antenna carrier (AC) is parallel
Method, idiographic flow is as in figure 2 it is shown, include:
Step S210, builds basic processing unit, and based on described basic processing unit by RRU data
Being stored into buffer area, specifically the data with adjacent m the chip of each described light mouth are a base
Present treatment unit, the data to each basic processing unit merge process and input extremely respectively
In buffer area, m >=2；
Step S220, carries out serioparallel exchange to each antenna carrier Binding, produces n road also
Row data, defining antenna carrier Binding is continuous n antenna carrier position, n >=2 one
The antenna carrier position sum that in individual chip, light mouth can carry is antenna carrier Group.
The RRU data of described storage are adjusted by step S220 according to the schedule information being pre-configured with
Degree is to described n channel parallel data.Wherein the content of schedule information mainly includes marking a chip
For the purpose of the total number of sample points that interior all modulated light mouthpieces carry and source.Such as Fig. 1, adjust
Degree information is: (6 Buffer merge the location index of total Buffer of master scheduling unit entrance
Addressing) and exit Buffer location index (5 Buffer merge address) between reflect
Penetrate relation.Can be understood as an array of pointers in units of entrance buffer total length, often
Individual pointer points to a concrete storage position of outlet buffer.This sentences Binding for scheduling
Unit, it is desirable to schedule information is carried out in units of Binding, i.e. it is believed that each pointer refers to
To Binding unit rather than individual address.
In the present embodiment, in order to take into account TD-SCDMA3 carrier wave or TD-LTE5M bandwidth
Application, takes n=3, is i.e. an AC Binding with 3 continuous print AC positions, at string also
During conversion, also each AC Binding is converted to 3 channel parallel datas.Can be efficient during n=3
Support the application of the various bandwidth patterns such as 5M/10M/15M/20M in many kinds of bandwidth varyings of LTE
Scene.Wherein, m=2, i.e. using 2 chip is a basic processing unit, it is also possible to
Be more than 3 chip be a basic processing unit.
Illustrate as a example by below using double chip+3AC Parallel Scheduling, i.e. n=3, m=2.
The theory diagram of the program is as it is shown on figure 3, and be total to optical fiber with TD-SCDMA and TD-LTE
Complex scene resolves.
Defining continuous 3 CA positions is an AC Binding(hereinafter referred to as ACBi), define one
The AC position sum of the chip of individual light mouth is an AC Group(hereinafter referred to as ACGr).This skill
Art scheme is a basic handling with the data of two adjacent the strangest ACGr of chip and even ACGr
Unit, i.e. 2 chip are a basic processing unit.Carrier wave based on above-mentioned theory diagram is adjusted
Degree method flow is as follows:
ACBi is completed serioparallel exchange via demultiplexing unit sub_mux_p, is decomposed into 3 ways
According to, and by Even ACGr and Odd ACGr(respectively as shown in solid line and dotted line in figure) number
According to the data merging into one 64 bit wides, (during serial, bit wide is 32, and time parallel, 2 chip are one
Processing unit), this process drop two port is carried out.
Each buffering area is scheduling by master scheduling unit according to the schedule information of configuration, scheduling
3 × 64 data of bit wide, being i.e. equivalent to the monocycle, to complete the granularity of master scheduling unit support be 6
The scheduling of (n × m) individual TD-SCDMA carrier wave.
3 circuit-switched data receiving side complete parallel-serial conversion via Multiplexing Unit sub_mux_q again, the completeest
Become the inverse process in step S310.
The method of the present invention uses chip to combine CA scheduling strategy, it is possible to reduce under high light mouth speed
The parallel demand of CA, in the case of CA parallel 3, can efficiently support
The scene that 5M/10M/15M/20M etc. are most widely used.It is current that to recommend CA degree of parallelism be 3 set
Put, it is possible to coupling existing network is actual to be applied and can simplify realization.Smooth support TD-LTE simultaneously
Access with TD-SCDMA bimodulus RRU single fiber, access and/or community in the mixing of light mouth speed
When mixed-bandwidth accesses, maintain the uniformity of scheduling granularity.
Light mouth data are passed through and are processed, when can significantly reduce the work of scheduling unit by the present invention
Clock, keeps relatively low granularity simultaneously, and the program is equal for high light mouth speed and low light mouth speed
Applicable.Use introducing time latitude, under the conditions of certain compromise: as chosen 3 carrier waves
TD-SCDMA or 5M TD-LTE, the contradiction between balance scheduling granularity and work clock.
Such as: under the work clock restrictive condition of current device, traditional scheduler can only effectively be supported
The bandwidth of 10M8A or at least 6 carrier wave TD-SCDMA, then will be for less than 10M bandwidth and 6
Under the scene of carrier wave, it will cause the waste of bandwidth.Now as a example by 10G optical fiber, it is theoretical
Capacity can support 4 5M8A TD-LTE communities, but owing to scheduling least unit 10M8A is little
District, is now only capable of limit fibre carrying 2 5M8A communities.The solution of the present invention then can be filled
Point utilize 10G light port band width, support 5i M(i=1～4) any combination, such as 5M+15M or
The multiple access module such as 5M+5M+10M.
Present invention also offers a kind of carrier dispatching system, including:
The present invention provides a kind of carrier dispatching system, as shown in Figure 4, comprising:
Processing means 1, is used for building basic processing unit, and based on described basic processing unit
RRU data are stored into buffer area, and described basic processing unit is the adjacent m of a light mouth
The data of individual chip, wherein m >=2；
Serioparallel exchange device 2, for each antenna carrier Binding is carried out serioparallel exchange,
Producing n channel parallel data, wherein n >=2, described antenna carrier Binding is continuous n sky
Line carrier wave position；
Dispatching device 3, for by the described RRU data dispatch of storage extremely described n road line number
According to.
Optionally, as it is shown in figure 5, described system also includes:
Receive device 4, the n channel parallel data after receiving scheduling；
Parallel-serial conversion device 5, for performing the n channel parallel data after the scheduling received and go here and there
Conversion.
Optionally, described n=3.
Optionally, m=2.
Optionally, described serioparallel exchange device uses the first Multiplexing Unit carry out described string and turn
Change.
Optionally, described parallel-serial conversion device uses the second Multiplexing Unit to perform described and string turn
Change.
Embodiment of above is merely to illustrate the present invention, and not limitation of the present invention, relevant
The those of ordinary skill of technical field, without departing from the spirit and scope of the present invention,
Can also make a variety of changes and modification, the technical scheme of the most all equivalents falls within the present invention
Category, the scope of patent protection of the present invention should be defined by the claims.
Claims (10)
1. a carrier scheduling method, it is characterised in that include step:
Building basic processing unit, described basic processing unit is adjacent m of a light mouth
The data of chip, and based on described basic processing unit, RRU data are stored into buffer area,
Wherein m >=2, chip is chronomere, represents optical fiber energy in the timeslice of 1/1.28M second
The antenna carrier number of enough carryings；
Each antenna carrier binding Binding is carried out serioparallel exchange, produces n channel parallel data,
Wherein, antenna carrier Binding is continuous n antenna carrier position, wherein n >=2；
According to the schedule information being pre-configured with by the RRU data dispatch of described storage to described n road
Parallel data.
2. carrier scheduling method as claimed in claim 1, it is characterised in that described method
Also include:
Receive the n channel parallel data after scheduling；
N channel parallel data after the scheduling received is performed parallel-serial conversion.
3. carrier scheduling method as claimed in claim 1 or 2, is further characterized in that, institute
State n=3.
4. carrier scheduling method as claimed in claim 1 or 2, is further characterized in that, profit
Described serioparallel exchange is carried out with demultiplexing unit.
5. carrier scheduling method as claimed in claim 2, is further characterized in that, utilizes multiple
Described parallel-serial conversion is performed with unit.
6. a carrier dispatching system, it is characterised in that including:
Processing means, is used for building basic processing unit, and will based on described basic processing unit
RRU data are stored into buffer area, and described basic processing unit is adjacent m of a light mouth
The data of chip, wherein m >=2, chip is chronomere, represents that optical fiber is in the 1/1.28M second
Timeslice in the antenna carrier number that can carry；
Serioparallel exchange device, for each antenna carrier binding Binding is carried out serioparallel exchange,
Producing n channel parallel data, wherein n >=2, antenna carrier Binding is that continuous n antenna carries
Ripple position；
Dispatching device, for by the described RRU data dispatch of storage extremely described n channel parallel data.
7. carrier dispatching system as claimed in claim 6, it is characterised in that described system is also
Including:
Receive device, the n channel parallel data after receiving scheduling；
Parallel-serial conversion device, turns for the n channel parallel data after the scheduling received is performed and gone here and there
Change.
Carrier dispatching system the most as claimed in claims 6 or 7, it is characterised in that described
N=3.
Carrier dispatching system the most as claimed in claims 6 or 7, is further characterized in that, institute
Stating serioparallel exchange device uses demultiplexing unit to carry out described serioparallel exchange.
10. carrier dispatching system as claimed in claim 7, is further characterized in that, described also
String conversion equipment uses Multiplexing Unit to perform described parallel-serial conversion.
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|---|---|---|---|---|
| CN101175291A (en) * | 2007-11-21 | 2008-05-07 | 中兴通讯股份有限公司 | Distribution method and device executing AxC to RRU connected with BBU |
| CN101868054A (en) * | 2010-05-07 | 2010-10-20 | 武汉邮电科学研究院 | Improved distribution-type base station architecture and realization method |
| CN102752250A (en) * | 2011-04-19 | 2012-10-24 | 鼎桥通信技术有限公司 | Intermediate frequency processing method and device for uplink and downlink, and radio remote unit (RRU) |
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2013
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101175291A (en) * | 2007-11-21 | 2008-05-07 | 中兴通讯股份有限公司 | Distribution method and device executing AxC to RRU connected with BBU |
| CN101868054A (en) * | 2010-05-07 | 2010-10-20 | 武汉邮电科学研究院 | Improved distribution-type base station architecture and realization method |
| CN102752250A (en) * | 2011-04-19 | 2012-10-24 | 鼎桥通信技术有限公司 | Intermediate frequency processing method and device for uplink and downlink, and radio remote unit (RRU) |
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