CN103095411A - Processing method for baseband signals in cloud base station - Google Patents
Processing method for baseband signals in cloud base station Download PDFInfo
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- CN103095411A CN103095411A CN2013100110789A CN201310011078A CN103095411A CN 103095411 A CN103095411 A CN 103095411A CN 2013100110789 A CN2013100110789 A CN 2013100110789A CN 201310011078 A CN201310011078 A CN 201310011078A CN 103095411 A CN103095411 A CN 103095411A
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Abstract
The invention provides a processing method for baseband signals in a cloud base station. All numbers which need subsequent periods processing are packaged to a data package in a primary link signal processing calculation module, and orderly transmission of a great deal of data scattered in a network and among calculation modules is achieved by looking up a database server. Meanwhile, orderly flowing of the data in each baseband signal processing calculation module and the primary link signal processing calculation module is achieved on the condition of network resource management and network dynamic changes, repeated back-and-forth transmission of the data between the primary link signal processing calculation module and each baseband signal processing calculation module is avoided, and data traffic in the network is reduced to the maximum degree.
Description
Technical field
The present invention relates to mobile radio telecommunications base station information treatment technology.
Background technology
Cloud base station (Cloud-RAN) is a kind of novel base station architecture.It is originally based on the FPGA(field programmable gate array), the DSP(Digital Signal Processing) the base station baseband signal process to change into and use the general-purpose computations module (being cloud computing) of a large amount of networkings to complete.Like this, the base station signal of different districts is processed and can be carried out in same " cloud ", and by the systematic unity Automatic dispatching, undertaken by express network by the data interaction between computing module as computational resource for the computing module in network.Due to each base station shared computation resource, resource is distributed automatically, so the cloud station technology can reduce energy consumption to the full extent, some radio communication new technologies also can be achieved.
This new technology also exists some problems to be had to be solvedly, and one of them important problem is exactly the problem of data traffic between computing module.Between base station originally, mutual data are all the user data after demodulation, and in the cloud base station, between the computing module of high in the clouds, mutual data are but the data between each base band signal process computing module, and data volume is far longer than the data after demodulation.The primary link signal is processed computing module and is responsible for sending upper layer data and receives upper layer data, and sends to each base band signal process computing module to process the base band data of physical layer.The processing of baseband signal is split into several steps, respectively corresponding several each different base band signal process computing modules, after each base band signal process computing module is completed corresponding treatment step, base band data after processing is transmitted back to the primary link signal processes computing module, process computing module by the primary link signal and send data on base band signal process computing module corresponding to next step.Like this, data are processed at the primary link signal and are repeatedly transmitted to and fro the high amount of traffic amount that can produce between computing module and each base band signal process computing module, and this makes the communication that in cloud, computing module is seen become a bottleneck.
Summary of the invention
Technical problem to be solved by this invention is, provides a kind of and can reduce the method for processing baseband signal that calculates the intermodular data traffic in the cloud base station.
The present invention solve the problems of the technologies described above the technical scheme that just adopts be that method for processing baseband signal in a kind of cloud base station comprises the following steps:
Pre-treatment step: the primary link signal is processed computing module the base band signal process process is carried out segmentation in order, for each segment processing is distributed corresponding numbering; Each is responsible for one section segment processing a plurality of base band signal process computing modules in network; The network address of all base band signal process computing modules in the database server stores network, corresponding numbering and the information on load of responsible segment processing;
Data packings step: the segment processing that the primary link signal is processed computing module will pending data, arrange is in turn numbered, the needed processing parameter of each segment processing and destination computing module information are packed, and with Packet Generation to the local communication management device; Afterwards, enter the package forward step;
The package forward step: the contact manager of base band signal process computing module extracts the segment processing numbering in packet in turn, search all base band signal process computing modules corresponding to this segment processing numbering in database server, select the less base band signal process computing module of load, with the network address of Packet Generation to this base band signal process computing module; Afterwards, enter the segment processing step:
Segment processing step: after the base band signal process computing module corresponding to segment processing numbering of the first segment processing numbering or centre receives packet, after extracting the segment processing of data and the complete paired data of processing parameter, data after current segment processing, untreated segment processing numbering, the needed processing parameter of untreated each segment processing and the primary link of arranging are in turn processed computing module information and repacked, and with Packet Generation to the local communication management device, afterwards, enter the package forward step; After base band signal process computing module corresponding to most end segment processing numbering receives packet, extract data and processing parameter, the segment processing of complete paired data, then according to destination computing module information, the data after Base-Band Processing is complete are sent to the destination computing module.
The present invention processes in computing module by the primary link signal all numberings that need subsequent segment to process is packed into packet, and transmit in order by searching the data that database server realized being dispersed in network between a large amount of computing modules, simultaneously, make each base band signal process computing module and primary link signal process computing module all under network resource management, in network dynamic change ground situation, realized flowing in order of data.
Concrete, be segmented in order for the base band signal process process that sends data: coding, resource mapping, modulate, add pilot tone; Base band signal process process for receive data is segmented in order: go pilot tone, demodulation, resource mapping, decoding.
The invention has the beneficial effects as follows, avoided data to process between computing module and each base band signal process computing module at the primary link signal and repeatedly transmitted to and fro, reduced to the full extent the data traffic in the network.
Description of drawings
Fig. 1 is that the cloud base station system consists of block diagram;
Fig. 2 is the data flow figure that processes in the cloud base station between computing module.
Embodiment
The present embodiment is based on the cloud base station architecture, cloud base station architecture block diagram as shown in Figure 1, comprise that far end radio frequency, primary link are processed the base band signal process computing module of computing module, responsible each baseband signal segment processing, database server consists of, connect by the calculating support network between these computing modules, server.The network address of all base band signal process computing modules in the database server stores network, corresponding numbering and the information on load of responsible segment processing.Database server can also be stored each primary link numbering and the corresponding primary link signal processing computing module network address.
According to coding or decoding, resource mapping, modulation or demodulation, add pilot tone or go pilot tone, four basic steps are carried out segmentation to the processing of baseband signal.That is, be segmented in order for the base band signal process process that sends data: coding, resource mapping, modulate, add pilot tone; Base band signal process process for receive data is segmented in order: go pilot tone, demodulation, resource mapping, decoding.The base band signal process computing module of being responsible for each baseband signal segment processing comprises: pilot tone is processed computing module, modulation /demodulation computing module, resource mapping computing module, signal codec computing module, and these 4 kinds of base band signal process computing modules are reference numeral 1,2,3,4 respectively.
The present embodiment is told about the handling process of base-band digital information take the data receiver link of an ofdm system as example, as shown in Figure 2:
Far end radio frequency is completed the reception of ofdm signal, and is converted to digital signal;
Primary link is processed computing module base band data is packed, segment processing numbering (1,2,3,4), the needed processing parameter of each segment processing, primary link numbering and the destination computing module information of comprise pending data, arranging in turn.The destination computing module is that primary link is processed computing module or data destinations computing module.Destination computing module information can be the numbering of purpose computing module or the network address of purpose computing module.
Primary link is processed the contact manager of operation in computing module and is processed address and the load condition of computing module according to segment processing numbering (numbering 1) pilot tone of the corresponding numbering 1 of inquiry from database server of order proposition in packet, the pilot tone that the is fit to processing computing module that selection is loaded petite according to scheduling rule is the pilot tone processing computing module address of Packet Generation to selection.
After pilot tone processing computing module is received packet, obtain parameter and the data that pilot tone is processed from packet, go pilot tone to process to data, will go data, untreated segment processing numbering (2,3,4), untreated each segment processing needed processing parameter, primary link numbering and the destination computing module information of in turn arranging of pilot tone after processing repack, and with Packet Generation to the local communication management device;
The contact manager that pilot tone is processed computing module proposes next segment processing numbering 2, from data base querying numbering 2 corresponding modulation /demodulation computing module addresses, the information such as load, sends packet to the modulation /demodulation computing module that is fit to.
After the modulation /demodulation computing module receives packet, obtain required parameter and the data of demodulation, the demodulation process of complete paired data from packet.
After demodulating algorithm resume module computing module is handled data, then the data after demodulation are repacked, new packet is consigned to the contact manager that operates on the machine.
The like, order is completed the processing of all baseband signals by number.Last signal codec computing module according to primary link numbering or destination computing module information, returns to primary link to result and processes computing module or data destinations computing module after the decoding of complete paired data.
Obviously, those skilled in the art should be understood that, each computing module of the present invention can be realized with general calculation element, they can concentrate on single calculation element, perhaps be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, carried out by calculation element thereby they can be stored in storage device, perhaps they are made into respectively each integrated circuit modules, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.In addition, the present embodiment is only told with the receiving terminal link of ofdm system, but is not limited only to the receiving terminal link of ofdm system.It can also comprise the transmission link, and adopts the various communication systems of cloud base station architecture and for the fractionation of link, multiple possible combination is arranged also, is not limited to Module Division as herein described.
The above is only the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Therefore within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (4)
1. method for processing baseband signal in a cloud base station, is characterized in that, comprises the following steps:
Pre-treatment step: the primary link signal is processed computing module the base band signal process process is carried out segmentation in order, for each segment processing is distributed corresponding numbering; Each is responsible for one section segment processing a plurality of base band signal process computing modules in network; The network address of all base band signal process computing modules in the database server stores network, corresponding numbering and the information on load of responsible segment processing;
Data packings step: the segment processing that the primary link signal is processed computing module will pending data, arrange is in turn numbered, the needed processing parameter of each segment processing and destination computing module information are packed, and with Packet Generation to the local communication management device; Afterwards, enter the package forward step;
The package forward step: the contact manager of base band signal process computing module extracts the segment processing numbering in packet in turn, search all base band signal process computing modules corresponding to this segment processing numbering in database server, select the less base band signal process computing module of load, with the network address of Packet Generation to this base band signal process computing module; Afterwards, enter the segment processing step:
Segment processing step: after the base band signal process computing module corresponding to segment processing numbering of the first segment processing numbering or centre receives packet, after extracting the segment processing of data and the complete paired data of processing parameter, data after current segment processing, untreated segment processing numbering, the needed processing parameter of untreated each segment processing and the primary link of arranging are in turn processed computing module information and repacked, and with Packet Generation to the local communication management device, afterwards, enter the package forward step; After base band signal process computing module corresponding to most end segment processing numbering receives packet, extract data and processing parameter, the segment processing of complete paired data, then according to destination computing module information, the data after Base-Band Processing is complete are sent to the destination computing module.
2. method for processing baseband signal in a kind of cloud base station as claimed in claim 1, is characterized in that, the base band signal process process carried out segmentation in order be specially:
Be segmented in order for the base band signal process process that sends data: coding, resource mapping, modulate, add pilot tone;
Base band signal process process for receive data is segmented in order: go pilot tone, demodulation, resource mapping, decoding.
3. method for processing baseband signal in a kind of cloud base station as claimed in claim 1, is characterized in that, described destination computing module is that the primary link signal is processed computing module.
4. as method for processing baseband signal in a kind of cloud base station as described in claim 1 or 3, it is characterized in that, destination computing module information can be the numbering of purpose computing module or the network address of purpose computing module.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104270777A (en) * | 2014-09-18 | 2015-01-07 | 北京邮电大学 | Performance statistics assessment method for base station resource pool physical layer algorithm packing scheme |
| CN104301932A (en) * | 2014-09-26 | 2015-01-21 | 北京邮电大学 | Task processing method and device of base station resource pool |
Citations (1)
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| CN102413143A (en) * | 2011-12-01 | 2012-04-11 | 江苏华丽网络工程有限公司 | Security audit system and method based on cloud computing |
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| CN102413143A (en) * | 2011-12-01 | 2012-04-11 | 江苏华丽网络工程有限公司 | Security audit system and method based on cloud computing |
Non-Patent Citations (1)
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| 郝高麟: "深覆盖大容量超小型无铁塔的云基站新技术", 《数据通信》, no. 4, 28 August 2012 (2012-08-28), pages 38 - 40 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104270777A (en) * | 2014-09-18 | 2015-01-07 | 北京邮电大学 | Performance statistics assessment method for base station resource pool physical layer algorithm packing scheme |
| CN104270777B (en) * | 2014-09-18 | 2017-09-08 | 北京邮电大学 | The performance statistics appraisal procedure of base station resource pond physical layer algorithm encapsulation scheme |
| CN104301932A (en) * | 2014-09-26 | 2015-01-21 | 北京邮电大学 | Task processing method and device of base station resource pool |
| CN104301932B (en) * | 2014-09-26 | 2017-12-05 | 北京邮电大学 | The task processing method and equipment of a kind of base station resource pond |
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