CN101080047A - An energy-saving method applied in GSM base station - Google Patents
An energy-saving method applied in GSM base station Download PDFInfo
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- CN101080047A CN101080047A CNA2007101177140A CN200710117714A CN101080047A CN 101080047 A CN101080047 A CN 101080047A CN A2007101177140 A CNA2007101177140 A CN A2007101177140A CN 200710117714 A CN200710117714 A CN 200710117714A CN 101080047 A CN101080047 A CN 101080047A
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- base station
- wireless receiving
- station controller
- letter platform
- dispatching letter
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0203—Power saving arrangements in the radio access network or backbone network of wireless communication networks
- H04W52/0206—Power saving arrangements in the radio access network or backbone network of wireless communication networks in access points, e.g. base stations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
This invention relates to a new type of energy-saving method used in the base stations of GSM mobile communication system, which can realize functions of measurement of service volume, decision of service transfer plans, transfer implement and closing vacant service units to save energy of base stations and increase usability of electric energy.
Description
Technical field
The present invention relates to the power-economizing method of base station in the mobile communication system, refer more particularly to the bigger center base station of capacity of a plurality of processing units, in existing business processing flow, added new module, form a new energy-conservation subsystem, make the base station in time adjust the processing units quantity that participates in operation automatically, thereby reach the purpose of saving the energy according to traffic load.
Background technology
The equipment of gsm system can be divided into exchange subsystem SSS, also is called network sub-system, base sub-system BSS, mobile radio station and Operation and Maintenance subsystem OSS four big subsystem equipment.In the operation cost of mobile communication carrier, the electric power that base sub-system consumed accounts for greatly, if can effectively reduce this part spending, then can save operation cost significantly and reach the purpose of saving energy resource consumption.
Base sub-system BSS mainly is responsible in the gsm system and systemic-function wireless and that transmission is relevant.As provide management to Radio Resource, the distribution of the wireless channel corresponding with the land wire message way is provided to the exchange subsystem, set up and discharge, provide the method that is linked into network by finite wireless resources to the mobile subscriber, and function such as control mobile subscriber handoff management.
Experimental data shows, base station system business load amount in each hour of 24 hours every days is different, traffic carrying capacity and differ when minimum and can reach ten times more than during professional top, even but in the minimum period of traffic carrying capacity, existing base station system also is a full power operation, this wherein some power be wasted, automatically adjust the processing units quantity that participates in operation according to traffic carrying capacity if can make the base station, close the unnecessary processing unit at the traffic carrying capacity low-valley interval, then can reach the purpose of saving electric power.
Base sub-system mainly contains base station controller BSC and BTS two functional entitys in base station transceiver station are formed.
The function that base station controller is realized mainly contains:
The land channel management manages control to A interface and Abis interface, carries out the distribution (comprising physical channel and logic channel) of channel between the BSC-BTS.Because the land channel allocation of wireless channel and Abis interface is to concern one to one, thereby BSC just is responsible for the channel allocation on the wave point.
The management (being the combination of logic channel, the mapping of physical channel etc.) to the wireless channel structure is carried out in wireless channel management, to user's assigned with dedicated channel, to the power control of radio-frequency channel etc.
Be responsible for three kinds of handovers: the inside, sub-district of BSC inside, the professional handover between the minizone of BSC inside and the BSC.
The Operation and Maintenance function comprises to the measurement of business with to the observation of a certain mobile radio station.BSC is controlling the triggering of these observations and measurement, and data are collected in sampling, set up file and transfer files to the OMC-B of operation maintenance center.
Support cell splitting or expansion, increase or reduce the part or all of equipment at base station transceiver station, increase or reduce wireless land channel etc.
The base station transceiver station owner will have the relevant wireless function that continues of the base sub-system of processing.Comprise:
The completion logic channel is to the mapping (comprising channel combination etc.) of physical channel.
Mobile radio station is inserted at random the detection that inserts with handover.
To the coding/decoding of wireless channel, the Channel Modulation demodulation, interleaving and de-interleaving, the encryption and decryption of data, tdma frame is set up, functions such as frequency hopping.
Processing is to the Operation and Maintenance function of each several part in its equipment.
When mobile radio station changes to dedicated mode from idle pulley, to initiate to insert request to the base station, reason may be an one of the following:
1. carrying out subdistrict position upgrades.
2. response paging.
3. set up and call out, comprise the supplementary service request, send the short message request.
Which kind of reason no matter, mobile radio station all is to send channel to the base station to insert request, the base station transceiver station detects after this request, consign to base station controller by it to the service to mobile stations allocated channel and connect, thereby mobile radio station can communicate business.
Channel request and assigning process are as shown in Figure 1.
Handoff procedure betides network and specifies mobile radio station to insert the channel of other sub-districts, and the reason of generation is varied, but switches power to make decision at base station controller.In case new sub-district is selected, mobile radio station just must transmit coordination with the management entity of former sub-district and new sub-district.This processing always is made up of two main processes:
(1) base station controller at first triggers a series of incidents, in order to set up a possible path.In case the path is set up, then send switching command to mobile radio station.
(2) mobile radio station inserts new channel by instruction, and the trigger network switching path, discharges original route.
Hand-off execution process as shown in Figure 2.
So-called exchange point can be former BSC, and also new BSC or other unit depend on the kind with handover.Exchange point is responsible for being established to necessary cable resource of new BSC and Radio Resource.The handover that relates in the present invention all is to switch between the inner BTS of BSC, so exchange point is exactly former BSC.
The no matter switching of which kind of type, when exchange point receive switch finish information after, all begin to discharge original path and Radio Resource in certain suitable mode.
Summary of the invention
The objective of the invention is to make the base station of mobile communication system to be concentrated business, close idle Service Processing Unit according to the real-time change of traffic carrying capacity, thus energy efficient.The present invention is a kind of power-economizing method that is applied to base stations in mobile communication system, the means that realize are based on the new traffic carrying capacity Adaptable System of the original business processing flow design in base station, this system can monitor what variation of traffic carrying capacity, and the functional module quantity that how many adjustment participations move according to traffic carrying capacity, thereby avoid idle running, under the prerequisite that does not influence service quality, improve electricity usage efficient in professional low ebb part of module in period.
The function and the characteristic description of this system are as follows:
A. can continual the service in base station load be carried out by programme controlled monitoring, measure and analyze.
B. based on to professional quantitative analysis, can form the solution of service set and transfer.
C. according to above-mentioned solution, can shift, close unwanted Service Processing Unit, reach the purpose of saving electric energy business.
For realizing the object of the invention, the technical scheme that the present invention takes is: a kind of traffic carrying capacity adaptive approach based on the base station load, be characterized in, and may further comprise the steps:
A. hold the setting program parameter by the operator in operation maintenance center, comprise the system start-up mode, start-up time, wireless receiving and dispatching letter platform measuring business volume frequency, the report of base station controller traffic carrying capacity is submitted the time etc.;
B. after the system start-up, base station controller sends the instruction download request to operation maintenance center, and operation maintenance center after confirming assigns operator's the order that is provided with to base station controller;
C. after base station controller is received order, carried out, according to the reporting format of submitting of order indication configuration self, according to the frequency of regulation in the order wireless receiving and dispatching letter platform is carried out traffic measurement on the other hand, and on official hour, the traffic carrying capacity report is uploaded to operation maintenance center on the one hand;
D. on the frequency time point of operation maintenance center's appointment, base station controller is assigned the traffic measurement order to wireless receiving and dispatching letter platform, after wireless receiving and dispatching letter platform receives orders, carried out, own all channel occupancy situations are scanned, and whether each channel occupancy is reached payload report to base station controller, and additional scanning complement mark;
E. after base station controller receives the scanning result data of wireless receiving and dispatching letter platform, according to the specification of prior setting form will on give the measuring business volume report of operation maintenance center, and send the delivery report application to operation maintenance center;
F. after the delivery report application of operation maintenance center's As-received station control, approved and accepted report data, the core decision-making module is analyzed report data, and makes a policy, decision making algorithm is seen below, and operation maintenance center will make a strategic decision to order again and assign to base station controller;
G. after base station controller is received the decision-making order, carried out, at first the business on the source wireless receiving and dispatching letter platform is transferred to purpose wireless receiving and dispatching letter platform, then the wireless receiving and dispatching letter platform of free time is carried out and opened or close;
H. after the order of wireless receiving and dispatching letter platform As-received station control, the business that relates in the order is carried out intra-cell change, the wireless receiving and dispatching letter platform that relates in the electric power source pair of module order is carried out and is opened or close;
I. wireless receiving and dispatching letter platform returns to base station controller with command execution results; One time the traffic carrying capacity self adaptation is regulated loop ends.
For realizing forming by three unit modules on the system for carrying out said process structure, be respectively the wireless receiving and dispatching letter platform (BTS) shown in Fig. 3, base station controller (BSC), operation maintenance center (OMC-B).Interface between them and communication protocol module also belong to this system.Wireless receiving and dispatching letter platform is professional direct carrying person, in a common base station, often has a plurality of wireless receiving and dispatching letter platforms to manage business simultaneously.In this system, each wireless receiving and dispatching letter platform can be accepted the instruction of base station controller and realizes being opened to the conversion of closing and being closed between the opening by being embedded in wherein energy supply control module.The function that wireless receiving and dispatching letter platform carries has guaranteed that it can measure self each operating position constantly of all channels, on this basis, can finish the channel occupancy situation of specifying moment wireless receiving and dispatching letter platform to the base station controller report based on the communication module 1 of Abis interface between wireless receiving and dispatching letter platform and the base station controller.After base station controller is received this report, by communication module 2 this report is uploaded to operation maintenance center again based on A interface between base station controller and the operation maintenance center.In operation maintenance center, decision-making module is analyzed the report of receiving, forms professional transfer centralized solution, and is returned to base station controller by communication module 2.The Executive Module of base station controller is resolved report, and translates into the action that self can carry out, comprises handover, closes or open certain wireless receiving and dispatching letter platform etc.Last wireless receiving and dispatching letter platform is carried out the action command of base station controller, finishes traffic carrying capacity self adaptation adjustment operation.This system diagram is by shown in Figure 4.
One of above-mentioned module for the said system that realizes a kind of traffic carrying capacity adaptive approach based on the base station load---operation maintenance center, its effect is the software kit that relies on operating in, commander's wireless receiving and dispatching letter platform, base station controller is finished the detection of traffic carrying capacity and report, make a policy, and base station controller assigned related command, reach control to wireless receiving and dispatching letter platform.Its core is the software kit as decision-making module.
The software kit that operates in operation maintenance center end provides the man-machine interface interface (MMI) that can use for the operator, and the operator can regulate and control this subsystem by the parameter of change software.
By the man-machine interface interface, the operator can
A. open or close this energy-conservation subsystem, perhaps realize timing switch by programming.
B., the moment that the time interval and the base station controller of the scanning of wireless receiving and dispatching letter platform traffic load are submitted report is set, and can believes index and the report form that comprises in the free configuration report on the basis that platform can realize at wireless receiving and dispatching.
C. realize setting according to actual needs to the traffic carrying capacity thresholding.
D. the mobile radio station that manually carries out on current certain wireless receiving and dispatching letter platform carries out handover, realizes the distribution to physics and logic channel, sets up and release.
E. any one wireless receiving and dispatching of manual-lock is believed platform and is kept interface module, also can restart this wireless receiving and dispatching letter platform by interface module.
F. inquire about the business report of each hour in a recent period of time, thereby the BTS service quantitative changeization is made manual analysis.
Described software kit can provide except that the man-machine interface interface, also finish following function:
A. can set realization timing switch or regularly monitoring by follow procedure.
B. subsystem starts the download request of back response base station controller, and with the business scanning frequency that sets, report sends frequency, and reporting format and desired every index are sent to base station controller.
C. receive the business amount monitor report of sending in the time period of agreement by base station controller.
D. store business report that each hour receive and consult and delete report before the certain hour length to save the space for the operator.
E. analyze the business amount monitor report of sending and judge whether to take action and close or open some wireless receiving and dispatching letter platform according to the algorithm that sets by base station controller.
F. base station controller is issued an order, comprising:
(1) new physics and logical channel assignment scheme.
(2) centralized solution of existing business, the wireless receiving and dispatching letter platform of specifying the wireless receiving and dispatching letter platform that needs transfer service and receiving transfer service.
(3) need the wireless receiving and dispatching of startup to believe platform quantity.
The algorithm of described software is as follows:
The leading indicator of weighing traffic carrying capacity is the occupancy of channel, and the channel quantity of promptly current participation Business Processing accounts for the ratio of total channel quantity.
If:
Each wireless receiving and dispatching letter channel quantity that platform carried is n,
Described base station total B wireless receiving and dispatching letter platform, correspondingly, the total channel quantity in this base station is nB,
The current channel quantity that is in the business processing status is t,
The current wireless receiving and dispatching letter platform quantity that is in opening is b,
The definition channel margin is that (0＜a＜n), that is, if the current x of a having channel is in business processing status, then following one-period should be opened the at random access of x+a channel in order to travelling carriage to a.
The wireless receiving and dispatching letter platform that following one-period should open is NEXT,
NEXT=[(t+a)/n]+1 if NEXT＞B, then get NEXT=B
If NEXT＞b, illustrate then that in the past traffic carrying capacity is in rising trend, should open new wireless receiving and dispatching letter platform to increase channel quantity in the one-period;
If NEXT=b does not then take any action;
If NEXT＜b, then explanation goes up that traffic carrying capacity is minimizing trend in the one-period, should close unwanted wireless receiving and dispatching letter platform to save electric energy.
The program of closing is as follows:
The numbering of giving 1～b for the wireless receiving and dispatching of current unlatching letter platform is as weight, and traffic load the maximum is b, and the lighter is 1, as identical person, then gets one at random and composes with bigger weight.
Then 1～(b-NEXT) number wireless receiving and dispatching letter platform will be closed.By numbering from low to high, successively the business on it is transferred to the wireless receiving and dispatching letter platform of reservation and it is closed.
For realizing above-mentioned a kind of traffic carrying capacity adaptive approach based on the base station load, the feature of described system also is the nervous centralis of base station controller as whole subsystem, the bridge that wireless receiving and dispatching letter platform and operation maintenance center are linked up, the order in parse operation maintenance centre implements on the wireless receiving and dispatching letter platform; And the state of affairs of periodic monitoring wireless receiving and dispatching letter platform reports to operation maintenance center.Its feature of described base station controller also is:
After described subsystem starts, download the section and frequency sweep time that is provided with by the operator from operation maintenance center by communication module 2, and the every index and the form that comprise in the report.
Regularly the traffic load situation of wireless receiving and dispatching letter platform is scanned according to predefined frequency, issuing an order also receives the data of returning to wireless receiving and dispatching letter platform, forms report, and the report in each little period is gathered.
In the report with this period on the predefined time point, give the described software of operation maintenance center's end.
Reception is transmitted the manual operation order of getting off by operation maintenance center, comprising: manual-lock or open certain wireless receiving and dispatching letter platform, and manually to certain channel handover etc.
Base station controller is after receiving the action command that is sent by operation maintenance center, and the operation of carrying out has:
A. convey to the order that wireless receiving and dispatching letter platform is opened the wireless receiving and dispatching letter platform of specified quantity by communication module 1.
B. receive the new physics and the logical channel assignment scheme that provide by described software, and it is implemented on the concrete wireless receiving and dispatching letter platform, determine a pair of wireless receiving and dispatching letter platform of the business that will shift and the executable operations of wanting.
C. to the handover between the selected business realizing wireless receiving and dispatching Xin Tai sub-district that will shift.
D. close some wireless receiving and dispatching letter platform of appointment.
The feature of said system also is to control the energy supply control module that wireless receiving and dispatching letter platform is opened or closed, and it is characterized in that:
Be positioned at the main power control module of leading position, accept order, and convey to each secondary power supply control module execution from base station controller.
Be subordinated to each secondary power supply control module of described main power control module, each secondary power supply control module is being controlled the unlatching of a corresponding wireless receiving and dispatching letter platform or is being closed.
The main power control module is communicated by letter with base station controller by communication module 1, accepts the order from base station controller.
Feature of the present invention also is to control the Handoff Control module of professional handover between the wireless receiving and dispatching letter platform, it is characterized in that:
Communicate by communication module 1 and base station controller, accept the handoff command that base station controller is passed on.
Can realize certain specified services is believed that from the source wireless receiving and dispatching of appointment platform is transferred to purpose wireless receiving and dispatching letter platform.
Feature of the present invention is that also the object wireless receiving and dispatching letter platform as this power-economizing method institute final regulation and control is characterized in that:
Each wireless receiving and dispatching is believed the unlatching of platform or is closed the control that is subjected to the secondary power supply control module corresponding with it.
Can carry out control command, comprise from base station controller:
-service load quantity and other every index scanning also report order.
-base station controller is finished the handoff command of planning.
-practicable new physics and the logical channel assignment scheme of finishing by operation maintenance center.
Feature of the present invention also is to it is characterized in that based on the communication module 1 of Abis interface standard between wireless receiving and dispatching letter platform and the base station controller:
For base station controller and energy supply control module provide communication interface, make the power supply control command be able to smooth execution.
For base station controller and Handoff Control module provide communication interface.
Pass on the scan channel order of base station controller and collect the channel occupancy situation scanning result that each wireless receiving and dispatching is believed platform, be uploaded to base station controller.
The method of the invention can improve the service efficiency of base station electric energy effectively, saves the electric energy spending of base station.
Description of drawings:
Performance characteristic of the present invention is further described by following embodiment and accompanying drawing thereof.
Fig. 1 is channel request and the assigning process schematic diagram in the communication process.
Fig. 2 is a communication service handover procedure schematic diagram.
Fig. 3 is that base station system is formed structure.
Fig. 4 is a described service adaptation system composition diagram.
Fig. 5 is a wireless receiving and dispatching letter platform composition diagram.
Fig. 6 is the base station controller composition diagram.
Embodiment:
The present invention is a kind of power-economizing method that is applied to base stations in mobile communication system, by dynamically adjusting the wireless receiving and dispatching letter platform quantity that participates in Business Processing in real time, improves utilization of power efficient, reaches and saves energy, the purpose that cuts operating costs.
This traffic carrying capacity Adaptable System is by energy supply control module, the Handoff Control module, and the state of affairs reporting modules, command analysis and Executive Module, decision-making module, communication module 1, modules such as communication module 2 are formed.
Energy supply control module is made up of two-stage, and master control module and secondary control module, master control module connect all secondary control modules and command analysis and Executive Module, carries out power management command.Secondary control module and wireless receiving and dispatching letter platform directly links to each other, can control wireless receiving and dispatching and believe the unlatching of platform or close.
The business that the Handoff Control module is coordinated between all wireless receiving and dispatching letter platforms shifts and distribution, links to each other with command analysis and Executive Module, accepts its switching command business is transferred on another from a wireless receiving and dispatching letter platform.
The state of affairs reporting modules is positioned at base station controller, links to each other with communication module 1, receives by its channel occupancy status report of regularly uploading, and is submitted to decision-making module after putting in order according to the requirement of decision-making module.
Command analysis and Executive Module also are positioned at base station controller, while and decision-making module, and the state of affairs reporting modules, the Handoff Control module, energy supply control module links to each other.In the circulation that each service adaptation is regulated, command analysis and Executive Module at first receive business transfer and the distribution solution that decision-making module is made, and to its parsing, the relevant parameter standard of extracting business report passes to the state of affairs reporting modules, determine the report specification for it, submit parameters such as frequency to.And business shifted and power management command resolves to the form that Handoff Control module and energy supply control module can be carried out, pass to their and carry out.
Decision-making module is positioned at operation maintenance center, is a software kit that moves thereon, its core algorithm as previously mentioned, in addition, decision-making module provides a personal-machine interface, uses for the operator.
Communication module 2 is between base station controller and operation maintenance center, for decision-making module and state of affairs reporting modules provide up communication interface, for decision-making module and command analysis and Executive Module provide the downlink communication interface.
Claims (1)
1, a kind of power-economizing method that is applied to the GSM base station is characterized in that the method includes the steps of:
A. hold the setting program parameter by the operator in operation maintenance center, comprise the system start-up mode, start-up time, wireless receiving and dispatching letter platform measuring business volume frequency, the report of base station controller traffic carrying capacity is submitted the time etc.;
B. after the system start-up, base station controller sends the instruction download request to operation maintenance center, and operation maintenance center after confirming assigns operator's the order that is provided with to base station controller;
C. after base station controller is received order, carried out, according to the reporting format of submitting of order indication configuration self, according to the frequency of regulation in the order wireless receiving and dispatching letter platform is carried out traffic measurement on the other hand, and on official hour, the traffic carrying capacity report is uploaded to operation maintenance center on the one hand;
D. on the frequency time point of operation maintenance center's appointment, base station controller is assigned the traffic measurement order to wireless receiving and dispatching letter platform, after wireless receiving and dispatching letter platform receives orders, carried out, own all channel occupancy situations are scanned, and whether each channel occupancy is reached payload report to base station controller, and additional scanning complement mark;
E. after base station controller receives the scanning result data of wireless receiving and dispatching letter platform, according to the specification of prior setting form will on give the measuring business volume report of operation maintenance center, and send the delivery report application to operation maintenance center;
F. after the delivery report application of operation maintenance center's As-received station control, approved and accepted report data, the core decision-making module is analyzed report data, and makes a policy, decision making algorithm is seen below, and operation maintenance center will make a strategic decision to order again and assign to base station controller;
G. after base station controller is received the decision-making order, carried out, at first the business on the source wireless receiving and dispatching letter platform is transferred to purpose wireless receiving and dispatching letter platform, then the wireless receiving and dispatching letter platform of free time is carried out and opened or close;
H. after the order of wireless receiving and dispatching letter platform As-received station control, the business that relates in the order is carried out intra-cell change, the wireless receiving and dispatching letter platform that relates in the electric power source pair of module order is carried out and is opened or close;
I. wireless receiving and dispatching letter platform returns to base station controller with command execution results; One time the traffic carrying capacity self adaptation is regulated loop ends.
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