CN103209025B - Based on electric power light carrier radio communication system and the implementation method in distributed base station pond - Google Patents
Based on electric power light carrier radio communication system and the implementation method in distributed base station pond Download PDFInfo
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Abstract
The invention belongs to field of power communication, be specially a kind of electric power light carrier radio communication system based on distributed base station pond and implementation method.Its system comprises the pond, N group base station and M radio frequency remote unit RRU that are intercomed mutually by optical-fiber network.The present invention is while the advantage of performance traditional distributed base station, make full use of electric power system and have the communication resource, reduce communications cost, adapt to intelligent grid grid structure, simultaneously, distally cell side, transmission channel side and aspect, three, side, pond, base station realize using based on the priority scheduling of resource of cognition, reach the object of GSLB process, and the flexibility that increase system is disposed can not cause the significantly increase of system Construction cost simultaneously.
Description
Technical field
The invention belongs to field of power communication, be specifically related to the electric power light carrier radio communication system based on distributed base station pond and implementation method.
Background technology
Intelligent grid construction experiences and construction achievement show, realize carrying out on-line monitoring to defeated, that become, to join etc. link key facility, surrounding enviroment etc., are realize the intelligentized important means of electrical network.The scientific and reasonable communication technology is selected to be realize intelligentized important support.
At present, in public network communication, carried out a series of distributed base station system building-up work, efficiently solve quorum sensing inhibitor problem, improve service quality.But power communication communicates with public network and there is certain difference, such as, public network communication lays particular emphasis on portable service, and power communication lays particular emphasis on fixed service, the service orientation of public network has the area of people's activity, pursue income input ratio to maximize, and a lot of facilities of electrical network especially power transmission facility be generally all deployed in meagrely-populated area, to serve power consumer for aim, in addition, operation of power networks requires higher to the aspect such as time delay, safety, reliability of power communication, so, the Constructing ideas of public network is directly indiscriminately imitated in power private network communication and can be there is some problems.
At present, the main forms of distributed base station is BBU+RRU, its cardinal principle is exactly the baseband portion of traditional base station and radio frequency part are separated, be divided into BBU and RRU two equipment, wherein BBU is base station baseband unit, be responsible for base band signal process and transmission, connect gps clock, be generally arranged in the important areas such as central machine room; RRU is far-end unit, is responsible for radio-frequency receiving-transmitting.Optical fiber is adopted to connect between BBU and RRU, relative to traditional base station, have dispose convenient, flexible, take up an area that volume reduces, resource is rationally shared and the advantage such as smooth dilation upgrade, be widely used in public network field particularly 3G communication pattern at present.
But it is limited for BBU disposal ability, the factors such as the transmission bandwidth between BBU and RRU is limited affect, application number is 200710130360.3, denomination of invention is " distributed base station, the indoor unit of distributed base station and outdoor unit " patent in propose the physical layer process function of distributed base station to be all placed in RRU to carry out, what make to transmit between BBU and RRU is the signal of un-encoded modulation, reduce the requirement of transmission rate, reduce the requirement of BBU disposal ability, but, concerning power industry, the block supply problem that RRU generally disposes is difficult to solve, such as at the RRU of transmission tower deploy, substantially all need to adopt solar powered mode, so RRU process is given in physical layer data process, RRU energy ezpenditure will certainly be accelerated, be unfavorable for data normal transmission.
Application number is 200910079460.7, a kind of load-balancing device for distributed base station system is proposed in the patent that denomination of invention is " a kind of load-balancing device and distributed base station system and communication means " thereof, relative to the construction mode of traditional BBU+RRU, this kind of pattern improves the flexibility of deployment, further increase the level of resource-sharing, but load-balancing device is the bottleneck realizing load balancing, first, need the disposal ability considering equipment, second, need to find appropriate place to dispose, 3rd, need the reliability of consideration equipment, 4th, increase the equipment that exploitation is new, increase construction cost, extend the construction period.And this kind of lower of pattern considers that the forwarding strategy of network level reaches load balancing, do not consider the load balancing of wireless front end and transmission channel, comprehensive the above, load-balancing device can realize load balancing locally, but to realize in GSLB also Shortcomings.
Summary of the invention
For the deficiencies in the prior art, the present invention proposes a kind of electric power light carrier radio communication system based on distributed base station pond and implementation method, while the advantage of performance traditional distributed base station, make full use of electric power system and have the communication resource, reduce communications cost, adapt to intelligent grid grid structure, simultaneously, distally cell side, transmission channel side and aspect, three, side, pond, base station realize using based on the priority scheduling of resource of cognition, reach the object of GSLB process, the flexibility that increase system is disposed can not cause the significantly increase of system Construction cost simultaneously.
A kind of electric power light carrier radio communication system based on distributed base station pond provided by the invention, its improvements are, described system comprises pond, N group base station and M the radio frequency remote unit RRU of being carried out transfer of data by optical-fiber network.
Wherein, the division principle in pond, described base station comprises:
The baseband processing unit BBU being deployed in an administrative region is divided into pond, a base station;
The baseband processing unit BBU be deployed in the transformer station of same electric pressure is divided into pond, a base station; Or
Pond, a base station is divided into by being deployed in geographical position baseband processing unit BBU of (and being easy to mutual) in 10 kilometer range.
Wherein, pond, one group of base station comprises Q baseband processing unit BBU;
Q baseband processing unit BBU in pond, base station is divided into member in pond head and pond according to data processing usefulness, is communicated in pond head and pond between member by optical-fiber network.
Wherein, in described pond head and pond, member upgrades automatically according to data processing usefulness, and by the information interaction as member in forebay head and pond, the baseband processing unit BBU selecting online data treatment efficiency maximum is as pond head.
Wherein, the expression formula calculating described treatment efficiency is as follows:
PP=w1*RBPC+w2*RIB；
In formula, PP represents treatment efficiency, and RBPC represents residual baseband disposal ability; RIB represents residue interface bandwidth; W1 and w2 represents the weight coefficient of residual baseband disposal ability and the weight coefficient of residue interface bandwidth respectively;
The weight coefficient w1 of residual baseband disposal ability and the weight coefficient w2 of residue interface bandwidth can carry out self-adaptative adjustment, processes dissimilar data.
The present invention is based on the implementation method of a kind of light carrier radio communication system that another object provides, its improvements are, business datum is passed to pond, base station, when communicating by optical-fiber network by RRU:
Optical-fiber network detects the loading condition of different radio frequency extension unit RRU, carries out self-adaptative adjustment according to load, for different radio frequency remote unit RRU distributes different wavelength division multiplexed channels, wavelength, number of carriers, realizes dynamic wavelength-division management;
N group base station communicates between pond, and determine that the data volume size of process is selected in pond, base station according to data processing usefulness, after determining respective data service, the pond head in pond, base station carries out data balancing process according to the data processing usefulness of member in pond; And
Pond, N group base station is carried out fusion treatment to information and is carried out frequency spectrum global administration accordingly, and then dynamic adjusting bandwidth, polymerization usable spectrum, and the radio frequency remote unit RRU associated by cognitive result adjustment baseband processing unit BBU, realize load balancing during wireless side communication.
Wherein, N group base station communicates between pond, and determine that the data volume size of process is selected in pond, base station according to data processing usefulness, the step realizing initiatively load bridging comprises:
1) pond, base station initialization: the pond hair in pond, each base station send querying command to member in each pond, member's feedback processing usefulness and geographical location information in pond, pond head is collected information and is calculated the treatment efficiency in the pond, base station at self place;
2) connection establishment: rely on the key SDH/WDM network of electric power to carry out information interaction between the pond head in different base station pond, mutual information comprises coverage and treatment efficiency, sets up distributed connection between pond, base station;
3) active process: according to mutual information between the head of pond, choose the maximum pond, base station of data processing usefulness as primary process pond, base station, when the data from radio frequency remote unit RRU side need process, initiatively carry out data processing by pond, described primary process base station, the data of its same radio frequency remote unit RRU are processed by pond, same base station;
4) distribute in pond: the pond head carrying out the pond, base station of data processing carries out the distribution of Processing tasks according to the data processing usefulness of member in the data volume of process and pond in pond, and in pond, member receives an assignment and carries out data processing;
5) usefulness upgrades: in pond, member is according to the data volume processed, periodic renewal data processing usefulness, and feed back to the pond head in pond, base station, calculated the treatment efficiency in pond, whole base station by pond head, and and to carry out periodical information between the pond head in other ponds, base station mutual.
Wherein, when member in pond break down, load excess or shift in position not in pond, base station scope time, undertaken clearing up and discharging and upgrading by pond head;
When having that in new pond, member adds pond, base station, itself and pond head carry out information interaction, and described pond head determines whether allow new member to add.
Wherein, when in new pond, member adds pond, base station, the communication steps in new pond between member and pond, base station comprises:
A, new BBU request adds pond, base station A, and send to A pond, pond, base station hair the order that joins request, pond head carries out analysis decision, judges.When accepting to add, inform the relevant information of pond head, comprise the time cycle etc. of pond A numbering, geographical position, cycle report information, when refusal adds, the reason of feedback refusal.
Self state information need be given in B, the base station newly added to pond, A pond hair, comprise treatment efficiency, geographical position etc., pond head feedback acknowledgment information, the member not receiving feedback acknowledgment information continues transmission information, until receive feedback information every one section of random time.
Wherein, the descending radio communication of described radio frequency remote unit RRU adopts electric power frequency range 230MHz to communicate.
Compared with the prior art, beneficial effect of the present invention is:
The present invention makes full use of electric power dedicated communication resource; This communication system can make full use of the dedicated communication resource that electric power system has, and comprises abundant fiber resource and special 230MHz Radio Resource, has and reduces system Construction cost, shortens the system Construction cycle, ensures the advantages such as system service quality.
The present invention is based on cognitive load balancing, improve utilization ratio; Data processing method based on distributed base station pond can make full use of idle processing resources, improves the Optimized Operation ability of resource, and optimize the handling process of load, the means based on cognition realize GSLB, improves the level of resources utilization.
The present invention adopts and is divided in the form of a pool by BBU, can improve the efficiency of management of BBU, realizes science configuration and the Appropriate application of resource, reduce the configuration needs of single BBU, reduce equipment cost, prevent from, because single BBU catastrophic failure causes communication system to be paralysed, improving redundancy ability.
What the present invention changed traditional B BU and RRU by optical communication network is fixedly connected with relation, is more adapted to the communication network shelf structure of intelligent grid, is more conducive to communication system and carries out flexible configuration according to the field condition of application scenarios.
Accompanying drawing explanation
Fig. 1 is the electric power light carrier radio communication system topological diagram based on distributed base station pond provided by the invention.
Fig. 2 is the load balancing hierarchical chart based on cognition provided by the invention.
Fig. 3 is the periodic duty periodogram of the load balancing based on distributed base station pond provided by the invention.
Fig. 4 is base station provided by the invention pond information interaction figure.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
As shown in Figure 1, the present invention propose based in the electric power light carrier radio communication system in distributed base station pond, comprise: Q (Q is positive integer, and Q is more than or equal to 2) electric power baseband processing unit BBU, some electric power radio frequency remote unit RRU and electric power optical communication network adapting to electric power system applied environment.System can be used for the generating of electric power system, transmission of electricity, power transformation, distribution and electricity consumption link.
Pond, base station (being also BBU pond) is combined to form with certain topographical form between BBU, pond member role divides member two type in pond head and pond, and be connected to form distributed base station pond in a distributed way and carry out data processing, carry out information interaction by pond head between pond, base station and realize distributed management, the division in single base station pond can be that the BBU being deployed in an administrative region is divided into pond, a base station, the BBU be deployed in the transformer station of same electric pressure can be divided into pond, a base station, also can be easy to mutual BBU be divided into pond, a base station by being deployed in geographical position in 10 kilometer range.
In Fig. 1, BBU and RRU device are all the Special industrial level equipment of electric power customization, can adapt to the operational environment under mal-condition.At present, electric power system fiber resource is very abundant, for the application of distributed base station system in electric power system provides favourable prerequisite, BBU equipment can be placed on the protection such as office of city machine room, 110/220KV transformer station more complete, dispose place eaily, ensure that power supply is reliable, easy to maintenance, running environment is suitable for, lay nearby in principle, and RRU needs to carry out on-the-spot flexible arrangement according to the demand of different link.For making full use of electric power private resource, improving the reliability of communication, reducing the interference of interference source, the descending radio communication of RRU adopts the special frequency range 230MHz of electric power to communicate.
In pond head and pond, member can upgrade automatically, when the disposal ability of scavenger head is not enough or because when failure cause cannot continue to serve as pond brilliance look, the pond head in pond, base station enters inside more new technological process, pass through information interaction, the BBU selecting online treatment efficiency maximum is as pond head, the factor of influence for the treatment of efficiency comprises residual baseband disposal ability and residue interface bandwidth, and treatment efficiency is defined as follows:
PP=w1*RBPC+w2*RIB；
In formula, PP represents treatment efficiency (ProcessingPerformance), RBPC represents residual baseband disposal ability (ResidualBasebandProcessingCapacity), RIB represents residue interface bandwidth (ResidualInterfaceBandwidth), w1, w2 represent the weight coefficient of residual baseband disposal ability and residue interface bandwidth respectively, can adaptively adjust, its objective is optimum use surplus resources, meet different business demand.Such as, comparatively large for residual baseband disposal ability, but the BBU that residue interface bandwidth is less, the business datum that not high, the pending data volume of requirement of real-time is large can be processed, by the adjustment of weight coefficient, this kind of data of this BBU priority treatment can be made.The treatment efficiency in pond, whole base station be the accumulative of each member's treatment efficiency in pond, base station and.
In pond, member is broken down and cannot to be worked or load capacity transfinites or shift in position does not carry out by pond head renewal of clearing up and discharging when pond, base station scope, and when having that in new pond, member adds pond, base station, carry out information interaction with pond head, pond head determines whether allow new member to add.
The light carrier radio communication system that the present embodiment proposes, it can realize the GSLB based on cognition, as shown in Figure 2, comprise the equilibrium of side, pond, base station, transmission channel side is balanced and far-end unit side is balanced, realize balanced means and comprise business cognition, flow cognition and Context aware.Wherein, business cognition refers to and can identify different types of service (image, data, video etc.), and then be initiatively that the business that data volume is large chooses the large pond, base station of residue treatment efficiency, the business that data volume is little chooses the little pond, base station of residue treatment efficiency, carry out equilibrium treatment in pond by pond head again, shorten the Whole Response time, improve Whole Response speed, realize resources effective utilization, flow cognition refers to the loading condition that different RRUs can be detected, and then carries out self-adaptative adjustment according to load, for different RRU distributes different wavelength division multiplexed channels, wavelength, number of carriers, realizes dynamic wavelength-division management, alleviates load overload pressure, Context aware refers to application aware radio spectrum sensing technology, to the usable spectrum bandwidth of far-end unit side, the parameters such as disturbed condition carry out perception, by side, pond, base station, fusion treatment is carried out to perception information and also carry out frequency spectrum global administration accordingly, and then dynamic adjusting bandwidth, polymerization usable spectrum, make full use of idle frequency spectrum resource, divide streaming data, slow down transmission pressure, also can according to RRU associated by cognitive result adjustment terminal, such as terminal 1 associates RRU1, and RRU1 load is larger, RRU2 load is less simultaneously, by controlling to make terminal 1 associate RRU2, and then realize load balancing.
The communication system that the present embodiment proposes utilizes the information interaction between pond, base station, realizes the active load bridging of side, pond, base station, and reach the object that process is balanced, as shown in Figure 3, side, pond, base station realizes the handling process of load balancing:
1) pond, base station initialization: the pond hair in pond, each base station send querying command to member in each pond, the information such as member's feedback processing usefulness, geographical position in pond, pond head is collected information and is calculated the treatment efficiency in pond, whole base station;
2) connection establishment: rely on the key SDH/WDM network of electric power to carry out information interaction between the pond head in different base station pond, mutual information comprises the information such as coverage, treatment efficiency, sets up distributed connection between pond, base station;
3) active process: according to mutual information between the head of pond, choose the maximum pond, base station for the treatment of efficiency as primary process pond, base station, namely when the data from RRU side need process, first initiatively data processing is carried out by this pond, base station, for guaranteeing data integrity, the data from same RRU give same base station to process;
4) distribute in pond: the pond head carrying out the pond, base station of data processing carries out the distribution of Processing tasks according to the treatment efficiency of member in the data volume of process and pond in pond, and in pond, member receives an assignment and carries out data processing;
5) usefulness upgrades: in pond, member is according to the data volume processed, periodic update process usefulness, and the pond head feeding back to pond, base station, is calculated the treatment efficiency in pond, whole base station by pond head, and and to carry out periodical information between the pond head in other ponds, base station mutual.
The internal information interactive maintenance in pond, base station is also the pith playing distributed base station pond usefulness, and as shown in Figure 4, the present embodiment illustrates for pond, base station A and pond, base station B the information interaction flow process in whole distributed base station pond, mainly comprises the following steps:
1. new BBU request adds pond, base station A, and send to A pond, pond, base station hair the order that joins request, pond head carries out analysis decision, judges.When accepting to add, inform the relevant information of pond head, comprise the time cycle etc. of pond A numbering, geographical position, cycle report information, when refusal adds, the reason of feedback refusal.
2. self state information need be given in the base station newly added to pond, A pond hair, comprise treatment efficiency, geographical position etc., pond head feedback acknowledgment information, and the member not receiving feedback acknowledgment information continues transmission information, until receive feedback information every one section of random time.
3. the whole treatment efficiency in pond, A pond head calculation base station pond, and carry out information interaction with pond, B pond head, the pond head feedback interaction results in B pond, and the information such as the treatment efficiency in B pond are sent to pond, A pond head, complete the two-way interactive in once two ponds.
4. in pond, A pond, member's periodic feedback self information is to pond, A pond head, and the transmission cycle is defined by pond, A pond head, the first feedback information in pond.
If 5. pond A receives Processing tasks, carry out task matching by pond head according to the treatment efficiency of each member, member's feedback processing situation and residue treatment efficiency etc. in pond, if energy normal process is with regard to fill order process, otherwise, undertaken redistributing process by pond head.
6. treatment efficiency in new pond on first watch, pond, A pond, carries out information interaction with pond, B pond head, pond, B pond head feedback reception information, if B pond treatment efficiency occur variation, pond, B pond head by upgrade after information feed back to pond, A pond head.
If 7. in pond, member wishes to exit pond, base station, Xiang Chitou sends request and exits command, pond head feedback processing result, and member in pond also can initiatively remove by pond head.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit, although with reference to above-described embodiment to invention has been detailed description, those of ordinary skill in the field are to be understood that: still can modify to the specific embodiment of the present invention or equivalent replacement, and not departing from any amendment of spirit and scope of the invention or equivalent replacement, it all should be encompassed in the middle of right of the present invention.
Claims (8)
1. based on the electric power light carrier radio communication system in distributed base station pond, it is characterized in that, described system comprises pond, N group base station and M the radio frequency remote unit RRU of being carried out transfer of data by optical-fiber network;
The division principle in pond, described base station comprises:
The baseband processing unit BBU being deployed in an administrative region is divided into pond, a base station;
The baseband processing unit BBU be deployed in the transformer station of same electric pressure is divided into pond, a base station; Or
Pond, a base station is divided into by being deployed in the baseband processing unit BBU of geographical position at a distance of 10 kilometer range;
Pond, one group of base station comprises Q baseband processing unit BBU;
Q baseband processing unit BBU in pond, base station is divided into member in pond head and pond according to data processing usefulness, is communicated in pond head and pond between member by optical-fiber network.
2. light carrier radio communication system as claimed in claim 1, it is characterized in that, in described pond head and pond, member upgrades automatically according to data processing usefulness, and by the information interaction as member in forebay head and pond, the baseband processing unit BBU selecting online data treatment efficiency maximum is as pond head.
3. light carrier radio communication system as claimed in claim 1, it is characterized in that, the expression formula calculating described treatment efficiency is as follows:
PP＝w1*RBPC+w2*RIB；
In formula, PP represents treatment efficiency, and RBPC represents residual baseband disposal ability; RIB represents residue interface bandwidth; W1 and w2 represents the weight coefficient of residual baseband disposal ability and the weight coefficient of residue interface bandwidth respectively;
The weight coefficient w1 of residual baseband disposal ability and the weight coefficient w2 of residue interface bandwidth carries out self-adaptative adjustment, processes dissimilar data.
4. an implementation method for light carrier radio communication system, is characterized in that, business datum is passed to pond, base station, when communicating by optical-fiber network by radio frequency remote unit RRU:
Optical-fiber network detects the loading condition of different radio frequency extension unit RRU, carries out self-adaptative adjustment according to load, for different radio frequency remote unit RRU distributes different wavelength division multiplexed channels, wavelength, number of carriers, realizes dynamic wavelength-division management;
N group base station communicates between pond, and determine that the data volume size of process is selected in pond, base station according to data processing usefulness, after determining respective data service, the pond head in pond, base station carries out data balancing process according to the data processing usefulness of member in pond;
And pond, N group base station is carried out fusion treatment to information and is carried out frequency spectrum global administration accordingly, and then dynamic adjusting bandwidth, polymerization usable spectrum, and the radio frequency remote unit RRU associated by cognitive result adjustment baseband processing unit BBU, realize load balancing during wireless side communication.
5. implementation method as claimed in claim 4, it is characterized in that, N group base station communicates between pond, and determine that the data volume size of process is selected in pond, base station according to data processing usefulness, the step realizing initiatively load bridging comprises:
1) pond, base station initialization: the pond hair in pond, each base station send querying command to member in each pond, member's feedback processing usefulness and geographical location information in pond, pond head is collected information and is calculated the treatment efficiency in the pond, base station at self place;
2) connection establishment: rely on the key SDH/WDM network of electric power to carry out information interaction between the pond head in different base station pond, mutual information comprises coverage and treatment efficiency, sets up distributed connection between pond, base station;
3) active process: according to mutual information between the head of pond, choose the maximum pond, base station of data processing usefulness as primary process pond, base station, when the data from radio frequency remote unit RRU side need process, initiatively carry out data processing by pond, described primary process base station, the data of its same radio frequency remote unit RRU are processed by pond, same base station;
4) distribute in pond: the pond head carrying out the pond, base station of data processing carries out the distribution of Processing tasks according to the data processing usefulness of member in the data volume of process and pond in pond, and in pond, member receives an assignment and carries out data processing;
5) usefulness upgrades: in pond, member is according to the data volume processed, periodic renewal data processing usefulness, and feed back to the pond head in pond, base station, calculated the treatment efficiency in pond, whole base station by pond head, and and to carry out periodical information between the pond head in other ponds, base station mutual.
6. implementation method as claimed in claim 4, is characterized in that, when member in pond break down, load excess or shift in position not in pond, base station scope time, undertaken clearing up and discharging and upgrading by pond head;
When having that in new pond, member adds pond, base station, itself and pond head carry out information interaction, and described pond head determines whether allow new member to add.
7. implementation method as claimed in claim 6, it is characterized in that, when in new pond, member adds pond, base station, the communication steps in new pond between member and pond, base station comprises:
1., new BBU request adds pond, base station A, the order that joins request is sent to A pond, pond, base station hair, pond head carries out analysis decision, judge, when accepting to add, inform the relevant information of pond head, comprise the time cycle of pond A numbering, geographical position, cycle report information, when refusal adds, the reason of feedback refusal;
2. self state information need be given in the base station, newly added to pond, A pond hair, comprise treatment efficiency, geographical position, pond head feedback acknowledgment information, and the member not receiving feedback acknowledgment information continues transmission information, until receive feedback information every one section of random time.
8. the implementation method of a kind of light carrier radio communication system as claimed in claim 4, is characterized in that, the descending radio communication of described radio frequency remote unit RRU adopts electric power frequency range 230MHz to communicate.
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| CN104468000B (en) * | 2014-12-11 | 2016-09-21 | 国家电网公司 | A kind of frequency spectrum sensing method of electric power light carrier radio communication system |
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| CN102668613A (en) * | 2011-11-22 | 2012-09-12 | 华为技术有限公司 | Method and apparatus for realizing base band resource pool in lte base station |
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Address after: Nan Shui Road Gulou District of Nanjing city of Jiangsu Province, No. 8 210003 Patentee after: China Electric Power Research Institute Patentee after: GLOBAL ENERGY INTERCONNECTION RESEARCH INSTITUTE Patentee after: State Grid Corporation of China Address before: Nan Shui Road Gulou District of Nanjing city of Jiangsu Province, No. 8 210003 Patentee before: China Electric Power Research Institute Patentee before: State Grid Smart Grid Institute Patentee before: State Grid Corporation of China |