CN102892124B - Method, device and system for adjusting coverage area of base station - Google Patents
Method, device and system for adjusting coverage area of base station Download PDFInfo
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- CN102892124B CN102892124B CN201210361919.4A CN201210361919A CN102892124B CN 102892124 B CN102892124 B CN 102892124B CN 201210361919 A CN201210361919 A CN 201210361919A CN 102892124 B CN102892124 B CN 102892124B
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Abstract
The invention provides a method, a device and a system for adjusting the coverage area of a base station. The method for adjusting the coverage area of the base station comprises the following steps of: acquiring a throughput rate of a sector; if the throughput rate of the sector is more than or equal to a heavy load threshold, acquiring a step value for adjusting downtilt or a transmitting power of an antenna of the sector according to signal quality data which is reported to the sector when a terminal switches the base state or according to a pre-stored reference data table; sending a first adjustment command which carries the step value to the base station to which the sector belongs, so that the base station can adjust the downtilt or the transmitting power of the antenna of the sector according to the step value after receiving the first adjustment command, and the coverage area of the base station is adjusted. By the method, the device and the system, the size of a coverage overlapping area of the base station and an adjacent base station is guaranteed, so that terminals which are positioned in the coverage overlapping area can enjoy normal voice service and data service, the phenomenon of unsuccessful switching or ping-pong switching is avoided, and the communication quality of the terminals in the coverage overlapping area is improved.
Description
Technical field
The present invention relates to wireless communication technology, particularly relate to a kind of base station range method of adjustment, Apparatus and system.
Background technology
Wideband Code Division Multiple Access (WCDMA) access (Wideband Code Division Multiple Access, WCDMA) system is an interference-limited system, there is obvious cell breath.This cell breath is mainly reflected in the variation relation of cell capacity and coverage.Fig. 1 is base station coverage schematic diagram in UMTS network different loads situation, and as shown in Figure 1, when the load of community increases, the capacity of community increases thereupon, and interference margins required for link increases, thus makes that the coverage of community is corresponding to diminish; When the load of community reduces, the capacity of community also reduces thereupon, and the interference margins required for link also can reduce, thus makes the coverage of community become large.Therefore, can there is corresponding change along with the change of this intra-cell users number and service conditions in the coverage of community reality.
At present, certain surplus can be reserved by the covering radius of WCDMA wireless network planning software under the network planning initial stage is high load condition.After opening base station, according to the result of manual measurement, the mode of manual adjustments can be utilized to improve or reduce the transmitting power of base station, thus the coverage of base station adjusted.
But the loading condition of base station is dynamic change, the load of base station presents irregular change at random among one day or in one month.When the heavier loads of community, the covering radius of base station will reduce, correspondingly, if the covering radius of adjacent base station all reduces, then may occur between the base stations covering discontinuous region, or overlapping covered reduction, the terminal making to be positioned at this overlapping region may when carrying out normal voice and data service, unsuccessfully causes call drop owing to switching.
Summary of the invention
The invention provides a kind of base station range method of adjustment, Apparatus and system, for improving the communication quality of terminal in covering overlapping area.
First aspect of the present invention is to provide a kind of base station range method of adjustment, comprising:
Obtain the throughput of sector;
If the throughput of described sector is more than or equal to heavy duty thresholding, then according to the terminal signal quality data that reports to described sector and the reference data table prestored when switching, obtain the step value of Downtilt for adjusting described sector or antenna transmission power;
The the first adjustment instruction carrying described step value is sent to the base station belonging to described sector, for described base station after receiving described first adjustment instruction, according to described step value, the Downtilt of described sector or antenna transmission power are adjusted, be adjusted to make the coverage of described base station.
Another aspect of the present invention is to provide a kind of processing unit, comprising:
Acquisition module, for obtaining the throughput of sector;
First processing module, for when the throughput of described sector is more than or equal to heavy duty thresholding, according to the terminal signal quality data that reports to described sector and the reference data table prestored when switching, obtain the step value of Downtilt for adjusting described sector or antenna transmission power;
Sending module, for sending the first adjustment instruction carrying described step value to the base station belonging to described sector, for described base station after receiving described first adjustment instruction, according to described step value, the Downtilt of described sector or antenna transmission power are adjusted, be adjusted to make the coverage of described base station.
Another aspect of the present invention is to provide a kind of radio network controller, comprises above-mentioned processing unit.
Another aspect of the present invention is to provide a kind of communication system, comprises radio network controller, at least one base station and at least one terminal; Described radio network controller, to communicate to connect between described base station and described terminal.
Base station range method of adjustment provided by the invention, Apparatus and system, the loading condition of sector is known by the size obtaining base station section throughput, the signal quality data utilizing terminal to report when switching when being heavy duty in sector and the reference data table prestored obtain the step value adjusted Downtilt or the antenna transmission power of this sector, and this step value is carried in adjustment instruction the base station sent to belonging to this sector, adjust to make the coverage of base station to this sector, the coverage of this base station is adjusted to size substantially equal when Downtilt or antenna transmission power are initial value, even if thus make base station in heavy duty situation, also the size of the covering overlapping area between adjacent base station can be kept, the terminal being positioned at covering overlapping area is enable to carry out normal voice-and-data business, reduce the generation switching unsuccessful or pingpang handoff situation, improve the communication quality of terminal in covering overlapping area.
Accompanying drawing explanation
Fig. 1 is base station coverage schematic diagram in UMTS network different loads situation;
Fig. 2 is the flow chart of base station range method of adjustment one embodiment provided by the invention;
Fig. 3 is the flow chart of another embodiment of base station range method of adjustment provided by the invention;
Fig. 4 is the structural representation of processing unit one embodiment provided by the invention;
Fig. 5 is the structural representation of another embodiment of processing unit provided by the invention;
Fig. 6 is the structural representation of radio network controller embodiment provided by the invention;
Fig. 7 a is the structural representation that communication system provided by the invention unifies embodiment;
Fig. 7 b is the structural representation of another embodiment of communication system provided by the invention.
Embodiment
The executive agent of the base station range method of adjustment that various embodiments of the present invention provide is processing unit, and this processing unit can be arranged in radio network controller (Radio Network Controller, RNC).Because RNC is connected with one or more base station, therefore, this processing unit utilizes the communication interface of RNC and each base station, and each base station communication be connected with RNC connects.The base station range method of adjustment that various embodiments of the present invention provide and device can apply universal mobile telecommunications system (Universal MobileTelecommunications System, UMTS) in, such as WCDMA network, but be not limited only to this, can be applied in equally in other 2G, 3G network or other communication networks.
Fig. 2 is the flow chart of base station range method of adjustment one embodiment provided by the invention, and as shown in Figure 2, the method comprises:
The throughput of step 101, acquisition sector.
Each base station that RNC connects may comprise one or more sector respectively, and therefore, processing unit needs the throughput of each sector obtaining the base station that RNC connects respectively.
When the quantity of the terminal of certain sector of access base station is more, the load of this sector is heavier, and accordingly, the throughput of this sector is higher; Access the terminal of this sector fewer time, the load of this sector is lighter, and accordingly, the throughput of this sector is lower.
Heavy duty thresholding and underload thresholding are set, for judge accessed sector throughput belonging to span, wherein, the numerical value of heavy duty thresholding is higher than the numerical value of underload thresholding, and concrete heavy duty thresholding and the numerical value of underload thresholding can correspondingly be arranged according to actual needs.
When the throughput of sector is more than or equal to heavy duty thresholding, the operation in step 102 can be performed.
If the throughput of the described sector of step 102 is more than or equal to heavy duty thresholding, then according to the terminal signal quality data that reports to described sector and the reference data table prestored when switching, obtain the step value of Downtilt for adjusting described sector or antenna transmission power.
Processing unit is after the throughput getting each sector, and according to set heavy duty thresholding and underload thresholding, the throughput to each sector judges.If judge, the throughput of sector is more than or equal to heavy duty thresholding, then the heavier loads that this sector is current is described.Due to when the heavier loads of base station, namely the throughput of this base station is higher, the capacity of this base station is corresponding larger, thus cause the coverage of this base station to reduce, and base station may comprise one or more sector, therefore, the words considered are carried out in units of sector, when the heavier loads of sector, namely the throughput of this sector is higher, and the coverage of this sector will reduce.Thus, according to the throughput size of sector, judge whether the coverage of this sector reduces to some extent.
If the throughput of sector is more than or equal to heavy duty thresholding, then the heavier loads that this sector is current is described, can judges that the coverage of this sector may reduce to some extent, therefore, need to adjust the Downtilt of this sector or antenna transmission power.
When increasing the angle of declination of antenna, the coverage of this sector, antenna place can be made to reduce, otherwise, when reducing the angle of declination of antenna, the coverage of this sector, antenna place can be made to increase.When increasing the transmitting power of antenna, the coverage of this sector, antenna place can be made to increase, otherwise, when reducing the transmitting power of antenna, the coverage of this sector, antenna place can be made to reduce.
There is certain covering overlapping area between the base station designed when the network planning, when base station causes its coverage to reduce due to heavier loads, the covering overlapping area between this base station and adjacent base station can be made to reduce.When covering overlapping area reduces, the terminal being positioned at these two base station boundaries places may be made to occur the situation of handoff failure or pingpang handoff.
Due to terminal switch between the base stations time, the signal quality data switched when occurring can be sent to base station, no matter be the base station that this terminal is connected before the handover, still connected after handover base station, all can receive the signal quality data that this terminal sends.If consider in units of sector, then when the terminal in sector switches, this sector of base station will receive the signal quality data of terminal to report, and when the terminal sending switching is multiple, this sector correspondingly receives the signal quality data of each terminal to report switched.Wherein, signal quality data belongs to mobile management event information, and the received signal strength and signal to noise ratio etc. that can comprise terminal can reflect the data of the signal quality that this terminal is current, signal quality data mobile management event information.
Processing unit, except obtaining the throughput of each sector, also obtains the signal quality data that terminal that each sector receives reports when switching.In addition, in this processing unit, be also previously stored with reference data table, this reference data table comprises the signal quality data of each sector when load is lighter.Therefore, processing unit passes through with the signal quality data in reference data table as benchmark, according to the signal quality data in accessed signal quality data and reference data table, calculate the step value needing to adjust Downtilt or the antenna transmission power of this sector.
By this step value calculated, the Downtilt of this sector or antenna transmission power are adjusted, thus the coverage of this sector is adjusted.Because the coverage of sector when heavy duty reduces to some extent, therefore, by adjusting the Downtilt of this sector or antenna transmission power, the coverage when Downtilt of the Downtilt after this sector is adjusted or coverage corresponding to antenna transmission power and this sector or antenna transmission power are initial value is substantially identical.
Step 103, to belonging to described sector base station send carry described step value first adjustment instruction, for described base station after receiving described first adjustment instruction, according to described step value, the Downtilt of described sector or antenna transmission power are adjusted, be adjusted to make the coverage of described base station.
Processing unit, after calculating the step value adjusted Downtilt or the antenna transmission power of sector, sends the first adjustment instruction to the base station belonging to this sector.Wherein, in the first adjustment instruction, carry the step value that the Downtilt carried out this sector or antenna transmission power adjust.
During owing to adjusting this sector, by adjusting Downtilt, or antenna transmission power can be adjusted, therefore, the rule of adjustment can be preset according to actual needs in processing unit.Such as, according to calculated step value, calculate the amplitude needing adjustment when adjusting Downtilt, or need the amplitude of adjustment when adjusting antenna transmission power.
Therefore, optionally, the concrete form carrying step value in the first adjustment instruction can be shown the adjustment item adjusted this sector by identification information, and is shown the amplitude that adjusts this adjustment item by concrete numerical value.
Base station according to the step value in the first adjustment instruction, adjusts the Downtilt of respective sectors or antenna transmission power, thus the coverage of this base station is adjusted after receiving the first adjustment instruction that this processing unit sends.
The base station range method of adjustment that the embodiment of the present invention provides, the loading condition of sector is known by the size obtaining base station section throughput, the signal quality data utilizing terminal to report when switching when being heavy duty in sector and the reference data table prestored obtain the step value adjusted Downtilt or the antenna transmission power of this sector, and this step value is carried in adjustment instruction the base station sent to belonging to this sector, adjust to make the coverage of base station to this sector, the coverage of this base station is adjusted to size substantially equal when Downtilt or antenna transmission power are initial value, even if thus make base station in heavy duty situation, also the size of the covering overlapping area between adjacent base station can be kept, the terminal being positioned at covering overlapping area is enable to carry out normal voice-and-data business, reduce the generation switching unsuccessful or pingpang handoff situation, improve the communication quality of terminal in covering overlapping area.
Further, on the basis of above-described embodiment, when the throughput of described sector is less than described underload thresholding, the second adjustment instruction is sent to the base station belonging to described sector, for described base station after receiving described second adjustment instruction, the Downtilt of described sector or antenna transmission power are adjusted to initial value.
Loading condition due to sector is dynamic change, when the above-mentioned sector be in heavy duty situation changes light load condition into, the Downtilt adjusted when heavy duty if still adopt or antenna transmission power, the coverage of this sector then can be caused to be that the coverage of initial value is large than Downtilt or antenna transmission power, that is, the coverage of this sector is excessive, causes the covering overlapping area of this sector own base station and adjacent base station excessive, thus it is excessive to cause adjacent area to be disturbed.
Therefore, when the sector under processing unit judges to be in heavy duty situation changes light load condition into, namely the throughput of this sector is from the numerical value being originally more than or equal to heavy duty thresholding, when changing the numerical value being less than underload thresholding into, then need the Downtilt of this sector or antenna transmission power to revert to initial value.
Concrete, under these circumstances, processing unit sends the second adjustment instruction to the base station belonging to this sector, to indicate this base station, the Downtilt of this sector or antenna transmission power are reverted to initial value.Wherein, by carrying the mode of identification information, each sector of this base station can be distinguished.Correspondingly, the Downtilt of this sector or antenna transmission power, after receiving the second adjustment instruction, are adjusted to initial value by base station.Downtilt or antenna transmission power are adjusted to initial value, and namely the tilt angled down of antenna reverts to initial position, or the size of antenna transmission power reverts to initial watt level.
Optionally, in order to ensure that sector is when underload, its Downtilt or antenna transmission power are initial value, and processing unit can when to obtain this sector be underloaded conclusion to each throughput detecting sector, and the base station namely to this sector sends the second adjustment instruction.Base station is after receiving the second adjustment instruction, if the Downtilt of this sector or antenna transmission power have been initial value, then does not need to adjust again, if not, then correspondingly Downtilt or antenna transmission power are adjusted to initial value.
The base station range method of adjustment that the embodiment of the present invention provides, under sector is underloaded situation, the Downtilt or the antenna transmission power that ensure this sector are initial operating state, scope set when can ensure that the coverage of this sector own base station is no more than planning, keep the size of covering overlapping area between adjacent base station, the terminal being positioned at covering overlapping area is enable to carry out normal voice-and-data business, reduce the generation switching unsuccessful or pingpang handoff situation, improve the communication quality of terminal in covering overlapping area.
A kind of optional execution mode is, if the throughput of described sector is less than described underload thresholding, then according to described terminal periodic ground or the signal quality data that reports to described sector when switching, safeguards described reference data table.
The reference data table utilized during the step value that processing unit calculating adjusts Downtilt or antenna transmission power, can be obtained by two kinds of modes.
A kind of mode when carrying out initial configuration to processing unit, being configured in advance according to network optimization experience, being stored in processing unit by this reference data table.
Another kind of mode is, processing unit is when the throughput of sector is less than underload thresholding, namely when sector is in light load condition, and the Downtilt of this sector and antenna transmission power are when being initial value, obtain the signal quality data that terminal reports to this sector, this signal quality data may report to this sector for terminal periodic, also may be that terminal reports to this sector when switching.And then processing unit is safeguarded reference data table according to the signal quality data of terminal to report.
Concrete, the generation of reference data table and maintenance process can in conjunction with above-mentioned two kinds of modes.
Due to reference data table be sector load lighter time signal quality data, therefore utilize reference data table as in the heavy duty situation of sector, to the fiducial value that Downtilt or antenna transmission power adjust, make adjustment more targeted, the adjustment result obtained is also more reasonable.And, the quantity of the sector connected due to processing unit may be more, therefore, when utilizing sector load lighter terminal periodic or when switching the signal quality data that reports to this sector safeguard this reference data table, the data in reference data table can be made more accurate, more meet the actual conditions of this sector.
Further, on the basis of above-described embodiment, step 101 can be specially according to the predetermined cycle, obtained the throughput of described sector.
The mode that processing unit obtains throughput of sector can be periodic.The throughput periodically obtaining each sector is more conducive to the situation of change knowing each throughput of sector in time, to adjust fan antenna angle of declination or antenna transmission power in time.
A kind of optional execution mode is, arranges two different cycles, respectively as period 1 and second round in processing unit.Period 1 is processing unit obtains data from described sector cycle when described sector is underload; Described second round is processing unit obtains data from described sector cycle when described sector is heavy duty, and the described period 1 is greater than described second round.
Concrete method of adjustment is, processing unit obtains the throughput of sector when initial according to the period 1, after the throughput getting each sector, then judge whether to need the cycle to obtaining this throughput of sector to adjust according to the difference of each throughput of sector.If the throughput of sector is less than underload thresholding, then continues to adopt the period 1, periodically obtain the throughput of this sector; If the throughput of sector is more than or equal to underload thresholding, then adopt second round, periodically obtain the throughput of this sector.Wherein, judging that the throughput of sector is more than or equal to underload thresholding and after being less than heavy duty thresholding, or after the throughput of sector is more than or equal to heavy duty thresholding, is all second round by the period modulation obtaining throughput of sector.
Because processing unit periodically obtains the throughput of each sector, correspondingly, when processing unit obtains the signal quality data of the terminal to report that each sector receives, also can obtain according to the cycle.That is, processing unit is when periodically obtaining the throughput of sector, also to obtain in a upper cycle terminal to report to the signal quality data of this sector, wherein go up in the one-period before the moment that in the cycle, terminal to report refers to acquisition throughput of sector to the signal quality data of this sector terminal to report to the signal quality data of this sector.
Under these circumstances, namely the terminal to report accessed by processing unit occurs to the signal quality data of this sector, judging the data before this throughput of sector size, therefore, a kind of optional execution mode is, processing unit by terminal periodic and the signal quality data that reports to sector when switching all get in device.When judging that the throughput of sector is less than underload thresholding, whole signal quality data of the terminal to report accessed by utilization safeguards reference data table; When judging that the throughput of sector is more than or equal to heavy duty thresholding, need to select from the signal quality data of accessed terminal to report, because sector may receive the signal quality data of multiple terminal to report in one-period, therefore, processing unit is from the signal quality data that multiple terminal reports when switching, the signal quality data of any selection terminal to report, or select the signal quality data of the terminal to report that first switches in this cycle.
By periodically obtaining the throughput of each sector and terminal to report to the signal quality data of sector, the size in cycle is adjusted, not only be conducive to the loading condition knowing sector in time, also help and adjust according to the coverage of loading condition to sector of sector in time; And according to periodically detecting the load variations of sector, statistical analysis is carried out to the mobile management event information of terminal to report, judge change overlapping covered between base station, thus be optimized by the coverage of method to base station of self adaptation dynamic micro-adjustments antenna electronics angle of declination or base station transmitting power
Fig. 3 is the flow chart of another embodiment of base station range method of adjustment provided by the invention, and as shown in Figure 3, the method comprises:
Step 201, processing unit carry out initiation parameter configuration.
Processing unit installation and deployment are in RNC.
When initiation parameter configures, the preset parameters for obtaining needed for base station and end message, comprises the underload thresholding Th to throughput of sector setting
lightwith heavy duty thresholding Th
weight, wherein Th
weight> Th
light> 0, unit is megabit per second (Mbps); The cycle of base station section throughput is obtained, i.e. period 1 T under also comprising light load condition
m, and in heavy duty situation, obtain the cycle T of base station section throughput
n, i.e. second round, wherein T
m> T
n> 0, unit is second; Also comprise sector offset amount Δ, initiating electron tilt angled down μ and Initial transmitting power value p.
Step 202, arrange that to obtain cycle of throughput of sector be T
m.
After Initialize installation completes, it is T that processing unit configures the throughput cycle obtaining different sector in base station automatically
m.
Step 203, the throughput Th in i-th community j moment of acquisition
i, j.
Processing unit is according to cycle T
m, obtain the throughput Th in RNC XiaiGe community j moment
i, j.
Step 204, judge Th
i, jwhether be more than or equal to Th
light.If not, then step 205 is performed; If so, then step 209 is performed.
Whether step 205, the electrical tilt angle judging antenna and transmitting power are initial value.If so, then step 202 is performed, to determine that the adopted cycle is for T
m; If not, then step 206. is performed
Step 206, the electrical tilt angle of recovering antenna and transmitting power are initial setting up.
The antenna electronics angle of declination of respective sectors and transmitting power, to corresponding base station transmitting order to lower levels, are reverted to initial setting up by processing unit.
In step 207, acquisition sector, terminal is in the Zone switched information reported.
Step 208, safeguard sector coverage optimization information list.
At this T
min cycle period, base station monitor terminal handover event, and end message is reported to processing unit, processing unit according to terminal in each sector got in the Zone switched information reported, set up and safeguard sector coverage optimization information list, the reference data table namely in above-described embodiment.One or more entry in the coverage optimization information list of sector, each entry comprises corresponding sequence number, sector mark (Identity, ID), received signal strength α
i, signal to noise ratio β
i, offset Δ
i.Wherein side-play amount is that the sector obtained according to the Downtilt of sector or the initial value of transmitting power covers borderline signal to noise ratio.
The method setting up sector coverage optimization information list can be following two kinds of modes.
One is, pre-sets according to network optimization empirical value.Each sector overlap is set in advance in initial configuration and covers parameter information,
Another kind is, by the method for processing unit by machine learning, learn on its own also safeguards sector coverage optimization information list information.Be specially, under sector is in light load condition, namely at single throughput of sector Th
i, j≤ Th
lightperiod, the terminal under i-th sector coverage area is reported by period measurement or measures the parameter information of reporting terminal when switching point by handover event.
Terminal periodic measurement reports or measures the parameter information of reporting terminal when switching point by handover event, and be the signal quality data in above-described embodiment, this signal quality data comprises received signal strength and the signal to noise ratio of described terminal.Sector coverage optimization information list in the present embodiment, is the reference data table in above-described embodiment.If the received signal strength that the received signal strength of described reference data table comprises described terminal periodic ground or reports to described sector when switching, then by signal to noise ratio corresponding with described terminal periodic ground or the equal received signal strength of the received signal strength that reports to described sector when switching in described reference data table, the signal to noise ratio reported to described sector when switching with described terminal is averaged, and safeguards the received signal strength in described reference data table and signal to noise ratio.
Wherein, under single sector, the signal to noise ratio corresponding with single received signal strength is
i, j are natural number, and i represents sector, and the span of j is 1 to n, represent the n that gets the data reported, and wherein, n data reported can for same terminal to report, also can be different terminal to report.
If the received signal strength not comprising described terminal periodic ground in the received signal strength of described reference data table or report to described sector when switching, then described terminal periodic ground or the received signal strength reported to described sector when switching and signal to noise ratio being added in described reference data table, safeguarding the received signal strength in described reference data table and signal to noise ratio.
Step 209, judge Th
i, jwhether be more than or equal to Th
weight.If so, then step 210 is performed; If not, then step 213 is performed.
In step 210, acquisition sector, terminal is in the Zone switched information reported.
Step 211, by decision algorithm obtain antenna electronics angle of declination or transmitting power fine setting step-length.
At Th
i, j>=Th
weighttime, processing unit is set up and the sector coverage optimization information list safeguarded in the Zone switched information that reports and step 208 according to terminal, by decision algorithm, determines the step-length should finely tuned electrical tilt angle or the transmitting power of antenna.
According to the received signal strength that described terminal reports to described sector when switching, from sector coverage optimization information list, namely obtain reference signal to noise ratio β corresponding to the received signal strength minimum with the received signal strength difference of described terminal to report in reference data table
i;
According to described with reference to signal to noise ratio β
i, described terminal to report signal to noise ratio β of reporting to described sector when switching
i, jand described offset Δ
i, obtain the described step value of Downtilt for adjusting described sector or antenna transmission power, described step value is right | β
i-β
i, j|/Δ
iresult of calculation carry out rounding obtained numerical value.
Step 212, to base station send adjustment instruction.
Processing unit, after obtaining the step value of finely tuning electrical tilt angle or the transmitting power of antenna, sending for adjusting instruction to corresponding base station, adjusting to make base station according to this step value to electrical tilt angle or transmitting power.
Step 213, arrange that to obtain cycle of throughput of sector be Tn.And continue to perform step 203.
Processing unit adopts cycle T
ncontinue the throughput periodically obtaining each base station section.
Fig. 4 is the structural representation of processing unit one embodiment provided by the invention, and as shown in Figure 4, this processing unit comprises acquisition module 11, first processing module 12 and sending module 13.
Acquisition module 11, for obtaining the throughput of sector;
First processing module 12, for when the throughput of described sector is more than or equal to heavy duty thresholding, according to the terminal signal quality data that reports to described sector and the reference data table prestored when switching, obtain the step value of Downtilt for adjusting described sector or antenna transmission power;
Sending module 13, for sending the first adjustment instruction carrying described step value to the base station belonging to described sector, for described base station after receiving described first adjustment instruction, according to described step value, the Downtilt of described sector or antenna transmission power are adjusted, be adjusted to make the coverage of described base station.
Fig. 5 is the structural representation of another embodiment of processing unit provided by the invention, and as shown in Figure 5, this processing unit also comprises the second processing module 14.
Second processing module 14, for when the throughput of described sector is less than described underload thresholding, according to described terminal periodic ground or the signal quality data that reports to described sector when switching, safeguards described reference data table.
Further, on the basis of above-described embodiment, described sending module 13 also for, when the throughput of described sector is less than described underload thresholding, the second adjustment instruction is sent to the base station belonging to described sector, for described base station after receiving described second adjustment instruction, the Downtilt of described sector or antenna transmission power are adjusted to initial value.
Further, on the basis of the various embodiments described above, described acquisition module 11 specifically for, according to the predetermined cycle, obtain the throughput of described sector.
Further, on the basis of the various embodiments described above, described acquisition module 11 comprises the first acquisition submodule 111 and second and obtains submodule 112.
First obtains submodule 111, and for obtaining the throughput of sector when initial according to the period 1, the described period 1 is the cycle obtaining data when described sector is underload from described sector;
Second obtains submodule 112, for when the throughput of described sector is more than or equal to described underload thresholding, according to the throughput obtaining described sector second round, described second round is the cycle obtaining data when described sector is heavy duty from described sector, and the described period 1 is greater than described second round.
Further, on the basis of the various embodiments described above, described signal quality data comprises received signal strength and the signal to noise ratio of described terminal; Correspondingly, described second processing module 14 comprises the first process submodule 141 and the second process submodule 142.
First process submodule 141, for comprise at the received signal strength of described reference data table described terminal periodic ground or switch time report to described sector received signal strength time, by signal to noise ratio corresponding with described terminal periodic ground or the equal received signal strength of the received signal strength that reports to described sector when switching in described reference data table, the signal to noise ratio reported to described sector when switching with described terminal is averaged, and safeguards the received signal strength in described reference data table and signal to noise ratio;
Second process submodule 142, for do not comprise in the received signal strength of described reference data table described terminal periodic ground or switch time report to described sector received signal strength time, described terminal periodic ground or the received signal strength reported to described sector when switching and signal to noise ratio being added in described reference data table, safeguarding the received signal strength in described reference data table and signal to noise ratio.
Further, on the basis of the various embodiments described above, in described reference data table, also comprise the offset Δ of described sector
i, described side-play amount is that the described sector obtained according to the Downtilt of described sector or the initial value of transmitting power covers borderline signal to noise ratio;
Correspondingly, described first processing module 12 comprises the 3rd process submodule 121 and the 4th process submodule 122.
3rd process submodule 121, for the received signal strength reported to described sector when switching according to described terminal, from described reference data table, obtain reference signal to noise ratio β corresponding to the received signal strength minimum with the received signal strength difference of described terminal to report
i;
4th process submodule 122, for according to described with reference to signal to noise ratio β
i, described terminal to report signal to noise ratio β of reporting to described sector when switching
i, jand described offset Δ
i, obtain the described step value of Downtilt for adjusting described sector or antenna transmission power, described step value is right | β
i-β
i, j|/Δ
iresult of calculation carry out rounding obtained numerical value.
Concrete, in the embodiment of the present invention, processing unit carries out the method for base station range adjustment, see the step in the embodiment of the method for above-mentioned correspondence, can repeat no more herein.
The processing unit that the embodiment of the present invention provides, the loading condition of sector is known by the size obtaining base station section throughput, the signal quality data utilizing terminal to report when switching when being heavy duty in sector and the reference data table prestored obtain the step value adjusted Downtilt or the antenna transmission power of this sector, and this step value is carried in adjustment instruction the base station sent to belonging to this sector, adjust to make the coverage of base station to this sector, the coverage of this base station is adjusted to size substantially equal when Downtilt or antenna transmission power are initial value, even if thus make base station in heavy duty situation, also the size of the covering overlapping area between adjacent base station can be kept, the terminal being positioned at covering overlapping area is enable to carry out normal voice-and-data business, reduce the generation switching unsuccessful or pingpang handoff situation, improve the communication quality of terminal in covering overlapping area.
Fig. 6 is the structural representation of radio network controller embodiment provided by the invention, and as shown in Figure 6, this radio network controller comprises arbitrary described processing unit 1 in the various embodiments described above.
Concrete, in the embodiment of the present invention, radio network controller carries out the method for base station range adjustment, see the step in the embodiment of the method for above-mentioned correspondence, can repeat no more herein.
Fig. 7 a is the structural representation that communication system provided by the invention unifies embodiment, as shown in Figure 7a, this communication system comprises radio network controller 2 described in radio network controller 2, at least one base station 3 and at least one terminal 4, communicates to connect between described base station 3 and described terminal 4.
Fig. 7 b is the structural representation of another embodiment of communication system provided by the invention, and as shown in Figure 7b, radio network controller 2 comprises processing unit 5, and processing unit 5 is communicated by the communication interface between radio network controller 2 with base station 3.
Processing unit 5 comprises radio network controller management control unit 51, data acquisition unit 52, data storage cell 53, statistics and arithmetic element 54, interface display unit 55, data input-output unit 56 and base station control unit 57.
Radio network controller management control unit 51 is cores that processing unit runs, and is responsible for making overall plans and coordinate each functional unit and managing.
Data acquisition unit 52, the data message that the terminal 4 received for periodically gathering base station 3 reports, is equivalent to the function of the acquisition module 11 shown in Fig. 4 and Fig. 5.
Data storage cell 53, for storing data message, the data message passing through statistics processing and relevant configuration information etc. that base station 3 reports.
Statistics and arithmetic element 54, preliminary treatment and statistical analysis are carried out to the initial data that data acquisition unit 52 gathers, and convert the perceptible form of user to, be supplied to interface display unit 55, be equivalent to the function of the first processing module 12 shown in Fig. 4 and Fig. 5 and the second processing module 14.
Interface display unit 55, is responsible for carrying out alternately with user, after the data message reported base station 3 carries out statistical calculation, shows with the perceptible form of user, such as map denotation, site information display, curve display etc.
Data input-output unit 56, for importing and exporting operation to monitoring and statistics, and the content of interface display unit 55 being presented to user carries out derivation operation.
Base station control unit 57, for generation of the various instructions that radio network controller management control unit is issued, corresponding base station 3 is handed down to by interface, thus reach the adjustment electrical tilt angle of respective base station 3 or the object of transmitting power, be equivalent to the function of the sending module 13 shown in Fig. 4 and Fig. 5.
The functional module of data storage cell 53, interface display unit 55 and data input-output unit 56 correspondence is not shown in for the embodiment shown in Fig. 4 and Fig. 5, can as functional module optional in the embodiment shown in Fig. 4 and Fig. 5.
Concrete, in the embodiment of the present invention, communication system carries out the method for base station range adjustment, see the step in the embodiment of the method for above-mentioned correspondence, can repeat no more herein.
The communication system that the embodiment of the present invention provides, the loading condition of sector is known by the size obtaining base station section throughput, the signal quality data utilizing terminal to report when switching when being heavy duty in sector and the reference data table prestored obtain the step value adjusted Downtilt or the antenna transmission power of this sector, and this step value is carried in adjustment instruction the base station sent to belonging to this sector, adjust to make the coverage of base station to this sector, the coverage of this base station is adjusted to size substantially equal when Downtilt or antenna transmission power are initial value, even if thus make base station in heavy duty situation, also the size of the covering overlapping area between adjacent base station can be kept, the terminal being positioned at covering overlapping area is enable to carry out normal voice-and-data business, reduce the generation switching unsuccessful or pingpang handoff situation, improve the communication quality of terminal in covering overlapping area.
One of ordinary skill in the art will appreciate that: all or part of step realizing above-mentioned each embodiment of the method can have been come by the hardware that program command is relevant.Aforesaid program can be stored in a computer read/write memory medium.This program, when performing, performs the step comprising above-mentioned each embodiment of the method; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a base station range method of adjustment, is characterized in that, comprising:
Obtain the throughput of sector;
If the throughput of described sector is more than or equal to heavy duty thresholding, then according to the terminal signal quality data that reports to described sector and the reference data table prestored when switching, obtain the step value of Downtilt for adjusting described sector or antenna transmission power;
The the first adjustment instruction carrying described step value is sent to the base station belonging to described sector, for described base station after receiving described first adjustment instruction, according to described step value, the Downtilt of described sector or antenna transmission power are adjusted, be adjusted to make the coverage of described base station;
Wherein, described reference data table comprises the offset Δ of described sector
i, described side-play amount is that the described sector obtained according to the Downtilt of described sector or the initial value of transmitting power covers borderline signal to noise ratio;
Correspondingly, described according to the terminal signal quality data that reports to described sector and the reference data table prestored when switching, the step value obtaining Downtilt for adjusting described sector or antenna transmission power is specially:
According to the received signal strength that described terminal reports to described sector when switching, from described reference data table, obtain reference signal to noise ratio β corresponding to the received signal strength minimum with the received signal strength difference of described terminal to report
i;
According to described with reference to signal to noise ratio β
i, described terminal to report signal to noise ratio β of reporting to described sector when switching
i,jand described offset Δ
i, obtain the described step value of Downtilt for adjusting described sector or antenna transmission power, described step value is right | β
i-β
i,j|/Δ
iresult of calculation carry out rounding obtained numerical value.
2. base station range method of adjustment according to claim 1, is characterized in that, after the throughput of described acquisition sector, described method also comprises:
If the throughput of described sector is less than underload thresholding, then according to described terminal periodic ground or the signal quality data that reports to described sector when switching, safeguard described reference data table;
When the throughput of described sector is less than described underload thresholding, the second adjustment instruction is sent to the base station belonging to described sector, for described base station after receiving described second adjustment instruction, the Downtilt of described sector or antenna transmission power are adjusted to initial value.
3. base station range method of adjustment according to claim 1, is characterized in that, the throughput of described acquisition sector is specially:
When initial, obtain the throughput of sector according to the period 1, the described period 1 is the cycle obtaining data when described sector is underload from described sector;
When the throughput of described sector is more than or equal to described underload thresholding, according to the throughput obtaining described sector second round, described second round is the cycle obtaining data when described sector is heavy duty from described sector, and the described period 1 is greater than described second round.
4. base station range method of adjustment according to claim 2, is characterized in that, described signal quality data comprises received signal strength and the signal to noise ratio of described terminal;
Correspondingly, described according to described terminal periodic ground or the signal quality data that reports to described sector when switching, safeguard that described reference data table is specially:
If the received signal strength that the received signal strength of described reference data table comprises described terminal periodic ground or reports to described sector when switching, then by signal to noise ratio corresponding with described terminal periodic ground or the equal received signal strength of the received signal strength that reports to described sector when switching in described reference data table, the signal to noise ratio reported to described sector when switching with described terminal is averaged, and safeguards the received signal strength in described reference data table and signal to noise ratio;
If the received signal strength not comprising described terminal periodic ground in the received signal strength of described reference data table or report to described sector when switching, then described terminal periodic ground or the received signal strength reported to described sector when switching and signal to noise ratio being added in described reference data table, safeguarding the received signal strength in described reference data table and signal to noise ratio.
5. a processing unit, is characterized in that, comprising:
Acquisition module, for obtaining the throughput of sector;
First processing module, for when the throughput of described sector is more than or equal to heavy duty thresholding, according to the terminal signal quality data that reports to described sector and the reference data table prestored when switching, obtain the step value of Downtilt for adjusting described sector or antenna transmission power;
Sending module, for sending the first adjustment instruction carrying described step value to the base station belonging to described sector, for described base station after receiving described first adjustment instruction, according to described step value, the Downtilt of described sector or antenna transmission power are adjusted, be adjusted to make the coverage of described base station;
Wherein, described reference data table comprises the offset Δ of described sector
i, described side-play amount is that the described sector obtained according to the Downtilt of described sector or the initial value of transmitting power covers borderline signal to noise ratio;
Correspondingly, described first processing module comprises:
3rd process submodule, for the received signal strength reported to described sector when switching according to described terminal, obtains reference signal to noise ratio β corresponding to the received signal strength minimum with the received signal strength difference of described terminal to report from described reference data table
i;
4th process submodule, for according to described with reference to signal to noise ratio β
i, described terminal to report signal to noise ratio β of reporting to described sector when switching
i,jand described offset Δ
i, obtain the described step value of Downtilt for adjusting described sector or antenna transmission power, described step value is right | β
i-β
i,j|/Δ
iresult of calculation carry out rounding obtained numerical value.
6. processing unit according to claim 5, is characterized in that, described processing unit also comprises:
Second processing module, for when the throughput of described sector is less than underload thresholding, according to described terminal periodic ground or the signal quality data that reports to described sector when switching, safeguards described reference data table;
Described sending module also for, when the throughput of described sector is less than described underload thresholding, the second adjustment instruction is sent to the base station belonging to described sector, for described base station after receiving described second adjustment instruction, the Downtilt of described sector or antenna transmission power are adjusted to initial value.
7. processing unit according to claim 5, is characterized in that, described acquisition module comprises:
First obtains submodule, and for obtaining the throughput of sector when initial according to the period 1, the described period 1 is the cycle obtaining data when described sector is underload from described sector;
Second obtains submodule, for when the throughput of described sector is more than or equal to described underload thresholding, according to the throughput obtaining described sector second round, described second round is the cycle obtaining data when described sector is heavy duty from described sector, and the described period 1 is greater than described second round.
8. processing unit according to claim 6, is characterized in that, described signal quality data comprises received signal strength and the signal to noise ratio of described terminal;
Correspondingly, described second processing module comprises:
First process submodule, for comprise at the received signal strength of described reference data table described terminal periodic ground or switch time report to described sector received signal strength time, by signal to noise ratio corresponding with described terminal periodic ground or the equal received signal strength of the received signal strength that reports to described sector when switching in described reference data table, the signal to noise ratio reported to described sector when switching with described terminal is averaged, and safeguards the received signal strength in described reference data table and signal to noise ratio;
Second process submodule, for do not comprise in the received signal strength of described reference data table described terminal periodic ground or switch time report to described sector received signal strength time, described terminal periodic ground or the received signal strength reported to described sector when switching and signal to noise ratio being added in described reference data table, safeguarding the received signal strength in described reference data table and signal to noise ratio.
9. a radio network controller, is characterized in that, comprise as arbitrary in claim 5-8 as described in processing unit.
10. a communication system, is characterized in that, comprises radio network controller as claimed in claim 9, at least one base station and at least one terminal; Described radio network controller, to communicate to connect between described base station and described terminal.
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| CN106332130B (en) * | 2015-07-02 | 2020-03-24 | 中国移动通信集团设计院有限公司 | Base station investigation method, device and system |
| CN106921981A (en) * | 2015-12-28 | 2017-07-04 | 中兴通讯股份有限公司 | A kind of method for managing resource, the apparatus and system of indoor distributed antenna system |
| CN107566142A (en) * | 2016-06-30 | 2018-01-09 | 中兴通讯股份有限公司 | Adjust the methods, devices and systems, wireless terminal, network management center system of AISG equipment |
| US10588094B2 (en) * | 2016-09-27 | 2020-03-10 | T-Mobile Usa, Inc. | Load-based power adjustments for cellular communication sites |
| CN106792740B (en) * | 2016-11-23 | 2019-07-02 | 中国联合网络通信集团有限公司 | A kind of method and device of the network capacity extension |
| CN107509207B (en) * | 2017-08-01 | 2021-04-30 | 中国联合网络通信集团有限公司 | Antenna downward inclination angle adjusting method and device |
| CN109495899B (en) * | 2017-09-13 | 2023-01-10 | 中国移动通信集团设计院有限公司 | Antenna parameter optimization method and device, electronic equipment and storage medium |
| CN108093388A (en) * | 2017-12-21 | 2018-05-29 | 深圳地空互联技术有限公司 | A kind of ATG systems because base station service quit cause covering cavity automatic emergency method |
| CN108445305B (en) * | 2018-03-13 | 2023-06-23 | 南京信息工程大学 | Electronic downtilt angle detection system and method for mobile base station antenna |
| CN109151840B (en) * | 2018-09-26 | 2024-02-02 | 中国平安人寿保险股份有限公司 | Base station signal adjustment method, device, computer equipment and storage medium |
| CN112953615B (en) * | 2019-12-10 | 2021-09-07 | 中移(成都)信息通信科技有限公司 | Signal continuous covering method, device, equipment and antenna system for target area |
| CN114079929B (en) * | 2020-08-21 | 2023-08-15 | 中国移动通信集团重庆有限公司 | Cell coverage adjusting method and wireless access network system |
| CN114697986B (en) * | 2020-12-28 | 2024-03-19 | 中国联合网络通信集团有限公司 | Base station parameter adjusting method and device |
| CN113438658B (en) * | 2021-06-22 | 2022-12-23 | 中国联合网络通信集团有限公司 | Method and device for determining coverage area of base station |
| CN114222307B (en) * | 2021-11-16 | 2023-06-27 | 中国联合网络通信集团有限公司 | Method and device for determining sector overlapping coverage area and electronic equipment |
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