CN102300221A - System, device and method for regulating cell coverage by using antenna - Google Patents
System, device and method for regulating cell coverage by using antenna Download PDFInfo
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- CN102300221A CN102300221A CN2010102193617A CN201010219361A CN102300221A CN 102300221 A CN102300221 A CN 102300221A CN 2010102193617 A CN2010102193617 A CN 2010102193617A CN 201010219361 A CN201010219361 A CN 201010219361A CN 102300221 A CN102300221 A CN 102300221A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/28—Cell structures using beam steering
Abstract
The invention discloses a system, device and method for regulating cell coverage by using an antenna. The system comprises an electrically-controlled antenna, a baseband unit in a base station device and a remote radio unit as a central control unit, wherein the baseband unit monitors parameters of reflecting cell load conditions collected by the remote radio unit in real time, calculates to obtain a dip angle of the antenna corresponding to a cell in the next time when the monitored parameter exceeds the preset critical value, and forms an antenna command which is sent to the corresponding electrically-controlled antenna through the remote radio unit as the central control unit; and the electrically-controlled antenna is used for regulating an antenna dip angle according to the received antenna command. According to the invention, the antenna dip angle is self-adaptively regulated through monitoring cell parameters, is sensitive to the change of the network load condition, and is more accurately regulated.
Description
Technical field
The present invention relates to the technology that mobile communication improves network service quality, relate in particular to and utilize antenna to adjust system, device and method that the sub-district covers.
Background technology
Current mobile radio communication is higher at high traffic, compact district, base station call loss, to disturb bigger problem, a solution be to shorten stop spacing in order to solve, and promptly reduces the sub-district area coverage.Reduce the sub-district covering and not only reduce this cell telephone traffic amount, reduce call loss, also reduced interference simultaneously the adjacent area.Fairly simple implementation method is to reach by the angle of declination of adjusting antenna to reduce the purpose that the sub-district covers.But common mechanical antenna is when wide-angle has a down dip, and the distortion of antenna horizontal directivity pattern is serious, and interference is caused in the adjacent area, and it is very inconvenient to adjust the inclination angle, and precision is also relatively poor.
Actual when utilizing Downtilt to adjust the sub-district to cover, every adjustment once all needs artificial drive test to understand the cell edge coverage condition, stops up to satisfying the demands adjusting.For the adjustment of antenna tilt, can reduce to disturb although add high inclination-angle, also reduced resource utilization simultaneously.Therefore the selection of the best angle of declination of antenna is very important, and it can make the sub-district satisfy performance requirement, simultaneously resource is fully used.
At present, the electrical tilt antenna that uses in the mobile communication is by the phase place and the amplitude of change conllinear array antenna oscillator, changes formate field intensity, thereby realizes the adjustment to antenna tilt.Because antenna level and vertical component field intensity change simultaneously, it is little to guarantee that the adjusted antenna pattern in inclination angle changes, and can avoid producing when reducing the sub-district covering and disturb.In addition, electrical tilt antenna allows system under non-stop-machine situation the vertical directivity pattern angle of declination to be adjusted, and can monitor the adjustment effect in real time, and inclination angle adjustment precision is higher, can realize meticulous adjustment at network.
At present, though the electrical tilt antenna introducing is solved the sub-district covering problem, but Shang Weijian has pair electrical tilt antenna to carry out the design that self adaptation is adjusted, and can this be a key giving full play to the advantage of electrical tilt antenna, thus can solve effectively current mobile radio communication higher at high traffic, compact district, base station call loss, disturb bigger problem.
Summary of the invention
Technical problem to be solved by this invention provides a kind of antenna that utilizes and adjusts system, device and method that the sub-district covers, can give full play of the advantage of electrical tilt antenna aspect adjustment sub-district covering.
In order to solve the problems of the technologies described above, the invention provides a kind of antenna that utilizes and adjust the system that the sub-district covers, comprise in electrical tilt antenna, the base station apparatus Base Band Unit and as the Remote Radio Unit of centralized control unit, wherein:
Base Band Unit, be used for monitoring in real time the parameter of the reaction cell load situation that Remote Radio Unit collects, and when the parameter of monitoring surpasses default critical value, next inclination angle constantly of sub-district respective antenna is obtained in calculating, and formation day line sends to the Remote Radio Unit as centralized control unit;
As the Remote Radio Unit of centralized control unit, the parameter that is used for the reaction cell load situation that will collect feeds back to Base Band Unit; The sky line of receiving is distributed to corresponding electrical tilt antenna;
Electrical tilt antenna is used for according to sky line the inclination angle of antenna being adjusted.
Further, in base station apparatus, Base Band Unit comprises successively cell parameter monitoring module, antenna control management module and the database that connects, and comprises a day line distribution module as the Remote Radio Unit of centralized control unit; Wherein:
The cell parameter monitoring module, be used for after each electrical tilt antenna being carried out antenna parameter initialization and calibration, the parameter of cell load situation is reacted in monitoring in real time, comprises in service call number and refusal calls, the percent of call lost and the Cell Edge User signal interference ratio one or more; When surpassing the generation of critical value incident, parameter reports the antenna control management module;
The antenna control management module, be used for after receiving the described incident that the cell parameter monitoring module reports, obtain the antenna configuration information of respective cell from data base querying, by next inclination angle constantly of predetermined policy calculation respective antenna, become described sky line and additional antenna positional information to send to a day line distribution module by the antennal interface protocol encapsulation antenna tilt information;
Database is used to preserve the antenna configuration information of jurisdiction district, base station;
It line distribution module is used for according to the antenna position information that parses sky line being distributed to corresponding electrical tilt antenna.
Further,
The antenna control management module is after receiving described incident, determine the stepping angle that antenna tilt is adjusted according to predetermined strategy, obtain next inclination angle constantly of respective antenna according to the inclination angle calculating of respective antenna current time, the inclination angle that equals the respective antenna current time adds this stepping angle.
Further, electrical tilt antenna comprises a day line Executive Module, be used for the antenna tilt information that basis parses from the sky line that receives, and calling driver module is adjusted to the inclination angle of antenna.
Further, Base Band Unit further comprises interactive interface, wherein:
After it line Executive Module is finished adjustment to antenna tilt, return antenna by sky line distribution module to Base Band Unit and adjust echo message;
This antenna that antenna control management module reception antenna instruction Executive Module returns is adjusted echo message;
Interactive interface is used for described Remote Radio Unit collected and all kinds of parameters of the reaction cell load situation of feedback are transmitted to the cell parameter monitoring module;
The antenna control management module is by the estimation to sub-district the present situation, and sky line that continuation will be packaged into and additional antenna positional information send to the sky line Executive Module of corresponding electrical tilt antenna by sky line distribution module.
Further, after the antenna control management module receives that antenna is adjusted echo message, be provided with and start a timer job;
Estimate that then sub-district the present situation is good if regularly device is overtime, determine the stepping angle that antenna tilt is adjusted according to predetermined strategy, obtain next inclination angle constantly of respective antenna according to the stepping angle calculation then, the inclination angle that equals the respective antenna current time deducts the stepping angle;
If regular device is not overtime and continue to receive that the parameter that has that the cell parameter monitoring module reports surpasses the critical value incident, then close this timer, and estimate that thus sub-district the present situation is not good as yet, obtain next inclination angle constantly of respective antenna according to the stepping angle calculation, or determine that according to predetermined strategy stepping angle and the calculating littler than antenna tilt adjustment last time obtains next inclination angle constantly of respective antenna, the inclination angle that equals the respective antenna current time adds the stepping angle.
Further,
When break down in the base station, each neighbor cell in the area under one's jurisdiction, base station of then breaking down reduces to increase separately coverage by the respective antenna inclination angle, up to the service call number of described neighbor cell adjacent area enough big or described neighbor cell disturb increase till.
In order to solve the problems of the technologies described above, the invention provides a kind of antenna that utilizes and adjust the base station apparatus that the sub-district covers, comprise Base Band Unit and as the Remote Radio Unit of centralized control unit, wherein:
Base Band Unit, be used for monitoring in real time the parameter of the reaction cell load situation that Remote Radio Unit collects, and when the parameter of monitoring surpasses default critical value, next inclination angle constantly of sub-district respective antenna is obtained in calculating, and formation day line sends to the Remote Radio Unit as centralized control unit;
As the Remote Radio Unit of centralized control unit, the sky line that is used for receiving is distributed to corresponding electrical tilt antenna.
Further, Base Band Unit comprises successively cell parameter monitoring module, antenna control management module and the database that connects, and comprises a day line distribution module as the Remote Radio Unit of centralized control unit; Wherein:
The cell parameter monitoring module, be used for after each electrical tilt antenna being carried out antenna parameter initialization and calibration, the parameter of cell load situation is reacted in monitoring in real time, comprises in service call number and refusal calls, the percent of call lost and the Cell Edge User signal interference ratio one or more; When surpassing the generation of critical value incident, parameter reports the antenna management control module;
The antenna control management module, be used for after receiving the incident that the cell parameter monitoring module reports, obtain the antenna configuration information of respective cell from data base querying, determine the stepping angle that antenna tilt is adjusted by predetermined strategy, obtain next inclination angle constantly of respective antenna according to the inclination angle of respective antenna current time and stepping angle calculation, line and additional antenna positional information send to a day line distribution module all day long by the antennal interface protocol encapsulation with antenna tilt information;
Database is used to preserve the antenna configuration information of jurisdiction district, base station;
It line distribution module is used for according to the antenna position information that parses sky line being distributed to corresponding electrical tilt antenna.
Further, Base Band Unit further comprises interactive interface, wherein:
The antenna control management module receives the antenna adjustment echo message that described electrical tilt antenna returns;
Interactive interface is used for described Remote Radio Unit collected and all kinds of parameters of the described reaction cell load situation of feedback are transmitted to described cell parameter monitoring module;
The antenna control management module is by the estimation to sub-district the present situation, and sky line that continuation will be packaged into and additional antenna positional information send to the sky line Executive Module of corresponding electrical tilt antenna by sky line distribution module.
Further,
After the antenna control management module receives that antenna is adjusted echo message, be provided with and start a timer job;
If regularly device is overtime, then the antenna control management module estimates that sub-district the present situation is good, determine the stepping angle that antenna tilt is adjusted according to predetermined strategy, obtain next inclination angle constantly of respective antenna according to this stepping angle calculation, the inclination angle that equals the respective antenna current time deducts this stepping angle;
If regular device is not overtime and continue to receive that the parameter that has that the cell parameter monitoring module reports surpasses the critical value incident, then the antenna control management module is closed this timer, and estimate that thus sub-district the present situation is not good as yet, obtain next inclination angle constantly of respective antenna according to the stepping angle calculation, or determine that according to predetermined strategy stepping angle and the calculating littler than antenna tilt adjustment last time obtains next inclination angle constantly of respective antenna, the inclination angle that equals the respective antenna current time adds this stepping angle.
In order to solve the problems of the technologies described above, the invention provides a kind of antenna that utilizes and adjust the electrical tilt antenna device that the sub-district covers, comprise a day line Executive Module, be used for the antenna tilt information that parses according to from the sky line that receives as the Remote Radio Unit of centralized control unit, and calling driver module is adjusted to antenna tilt.
Further,
After it line Executive Module is finished adjustment to the inclination angle of antenna, return antenna to Base Band Unit to Base Band Unit by Remote Radio Unit and adjust echo message as centralized control unit.
In order to solve the problems of the technologies described above, the invention provides a kind of antenna that utilizes and adjust the method that the sub-district covers, relate in electrical tilt antenna and the base station Base Band Unit and as the Remote Radio Unit of centralized control unit, this method comprises:
When Base Band Unit surpasses critical value in the parameter of the reaction cell load situation that monitors the Remote Radio Unit collection, the inclination angle that increases this corresponding electrical tilt antenna in sub-district, and formation day line sends to the Remote Radio Unit as centralized control unit;
The sky line that will receive as the Remote Radio Unit of centralized control unit is distributed to corresponding electrical tilt antenna;
Electrical tilt antenna is adjusted the inclination angle of antenna according to described day line.
Further, this method specifically comprises:
Base Band Unit is after carrying out antenna parameter initialization and calibration to each electrical tilt antenna, monitor all kinds of parameters of described reaction cell load situation in real time, comprise in service call number and refusal calls, the percent of call lost and the Cell Edge User signal interference ratio one or more; When parameter surpasses critical value, the antenna configuration information of respective cell is obtained in inquiry, determine the stepping angle that antenna tilt is adjusted by predetermined strategy, obtain next inclination angle constantly of respective antenna according to the inclination angle of respective antenna current time and stepping angle calculation, line and additional antenna positional information send to Remote Radio Unit as centralized control unit all day long by the antennal interface protocol encapsulation with antenna tilt information;
Remote Radio Unit as centralized control unit is distributed to corresponding electrical tilt antenna according to the antenna position information that parses with sky line;
After electrical tilt antenna is received day line, the inclination angle of antenna is adjusted according to the antenna tilt information that from sky line, parses.
Further,
After electrical tilt antenna is finished adjustment to antenna tilt, return antenna by Remote Radio Unit to Base Band Unit and adjust echo message as centralized control unit;
After Base Band Unit receives that antenna is adjusted echo message, be provided with and start a timer job;
Estimate that then sub-district the present situation is good if this regular device is overtime, determine the stepping angle that antenna tilt is adjusted according to predetermined strategy, obtain next inclination angle constantly of respective antenna according to this stepping angle calculation, the inclination angle that equals the respective antenna current time deducts this stepping angle;
If this regular device is not overtime and continue to know have parameter to surpass critical value, then close this timer, and estimate that thus sub-district the present situation is not good as yet, obtain next inclination angle constantly of respective antenna according to the stepping angle calculation, or determine that according to predetermined strategy stepping angle and the calculating littler than antenna tilt adjustment last time obtains next inclination angle constantly of respective antenna, the inclination angle that equals the respective antenna current time adds the stepping angle.
Further,
When break down in the base station, each neighbor cell in the area under one's jurisdiction, base station of then breaking down reduces to increase separately coverage by the respective antenna inclination angle, up to the service call number of described neighbor cell adjacent area enough big or described neighbor cell disturb increase till.
The antenna that utilizes provided by the invention is adjusted the method and system that the sub-district covers, making the base station to carry out self adaptation to antenna tilt by the monitor cell parameter regulates, removed from and manually climbed iron tower, the operational trouble of manpower drive test, and this regulative mode is comparatively sensitive to the reacting condition of offered load situation, and is also more accurate to the adjustment of Downtilt.Each base station covers self adaptation by the operation sub-district and adjusts strategy, can guarantee the angle of declination optimum of most of antenna for base station, when guaranteeing network service quality, can reach the effective utilization to Internet resources.Have again, utilize the present invention can handle some abnormal conditions in the network, for base station fault or newly-increased base station, this system can finish the reasonable covering of each sub-district in the short period of time by automatic adjusting, it is a lot of to need not manual intervention, and has saved more time for manpower keeps in repair and adjust the base station.
Description of drawings
Fig. 1 is a kind of connection diagram of the electrical tilt antenna networking of mobile communications network use;
Fig. 2 is the structural representation that utilizes antenna to adjust the system embodiment of sub-district covering of the present invention;
Fig. 3 is the flow chart that utilizes antenna to adjust the method embodiment of sub-district covering of the present invention;
Fig. 4 adjusts each module reciprocal process schematic diagram in the system that the sub-district covers for the antenna that utilizes of the present invention.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment technical scheme of the present invention is at length set forth.The embodiment that below exemplifies only is used for description and interpretation the present invention, and does not constitute the restriction to technical solution of the present invention.
As shown in Figure 1, be a kind of connected mode of the electrical tilt antenna networking of mobile communications network use.Usually the base station comprises Base Band Unit BBU (Base Band Unit) and radio frequency remote unit RRU (Remote Radio Unit), shown in the frame of broken lines among Fig. 1; Wherein, BBU is used for Base-Band Processing and a plurality of RRU is carried out centralized control; RRU is used to carry out the radio frequency resource management, and a plurality of RRU can become the chain topological structure by the optical fiber cascaded series.Electrical tilt antenna (ANT) connects RRU by radio frequency (RF) cable, a plurality of electrical tilt antennas can pass through antenna data interface protocol (AISG, Antenna Interface Standards Group) cable (or other day wire protocol cable) cascaded series becomes the chain topological structure, the RRU that connects the AISG cable is as centralized control unit (CCU, Central Control Unit), and by optional optical fiber be connected with BBU.
Fig. 1 only is a kind of networking connected mode of the electrical tilt antenna of mobile communications network use, certainly except that this networking mode, alternate manner can also be arranged.For example, a plurality of RRU all can be used as CCU, are connected with RRU by the AISG cable, and are connected with BBU by optional optical fiber.
The present invention is on the basis of Fig. 1, provide a kind of antenna that utilizes to adjust the system embodiment that the sub-district covers, its structure as shown in Figure 2, this system embodiment mainly is to realize by form of software, comprise successively the BBU that connects, as RRU and the electrical tilt antenna of CCU, wherein:
BBU, be used for monitoring in real time the parameter of the reaction cell load situation that RRU collects, and when the parameter of monitoring surpasses default critical value, calculate next inclination angle constantly of respective antenna, and formation antenna adjustment information is carried at the RRU that sends in day line as CCU;
The parameter of the cell load of monitoring reaction in real time situation, for example parameter such as service call number and refusal calls, the percent of call lost and Cell Edge User signal interference ratio.
The antenna adjustment information comprises the antenna position information of the antenna that indicates the needs adjustment and the obliquity information that respective antenna is adjusted.
As the RRU of CCU, the sky line that is used for receiving is distributed to corresponding electrical tilt antenna;
Only schematically draw an electrical tilt antenna among Fig. 2.In fact, according to the antenna position information in the sky line, corresponding day line is sent to corresponding electrical tilt antenna by the RRU under this antenna as the RRU of CCU.
Electrical tilt antenna is used for parsing the antenna adjustment information from the sky line of receiving, carries out the adjustment to antenna tilt.
After electrical tilt antenna also is used to carry out adjustment to antenna tilt, the RRU by separately and/or return antenna as the RRU of CCU to BBU and adjust echo message.
BBU carries out antenna parameter initialization and calibration thereof by RRU to each electrical tilt antenna, and the initial obliquity information of each electrical tilt antenna that will inquire about is kept at this locality.
BBU after receiving that antenna is adjusted echo message, by estimation to sub-district the present situation, further send carry the antenna adjustment information sky line to RRU as CCU.
BBU shown in Figure 2 comprises cell parameter monitoring module, antenna control management module and the database that connects successively, wherein:
The cell parameter monitoring module is used for monitoring in real time the parameter of the reaction cell load situation that RRU collects, and reports the antenna management control module when critical value incident takes place there being parameter to surpass;
The parameter of the reaction cell load situation of cell parameter monitoring module monitoring comprises service call number and parameters such as refusal calls, the percent of call lost and Cell Edge User signal interference ratio.
For example, the cell parameter monitoring module is calculated as follows the percent of call lost in this moment according to each service call number and refusal calls constantly of record:
The percent of call lost=(calls of refusing because of the base station is busy)/(service call number+refuse calls) because of the base station is busy.
Surpass default critical value if the cell parameter monitoring module calculates a certain moment percent of call lost, the percent of call lost critical value default such as a certain sub-district is 5%, then gives the antenna control management module with this reporting events when the percent of call lost that calculates this sub-district is higher than 5%.In addition, the cell parameter monitoring module can write down the QoS parameter of a plurality of sub-districts simultaneously, and stores corresponding cell ID, in order to distinguish the service quality of different districts.For example, BBU manages two sub-districts, and cell ID is respectively 0 and 1, two sub-district call loss critical value and is preset as 1% and 5% respectively, if it all is 2% that a certain moment monitors the percent of call lost of this two sub-district, then only need report No. 0 sub-district not satisfy the incident of service quality to the antenna control management module.
The antenna management control module, be used for after receiving that parameter that the cell parameter monitoring module reports surpasses the critical value incident, obtain the antenna configuration information of respective cell from data base querying, by next inclination angle constantly of the predetermined corresponding electrical tilt antenna of policy calculation, and with the positional information of this electrical tilt antenna and the angle of declination information that should adjust by specific antennal interface protocol encapsulation all day long line send to RRU as CCU.
The antenna management control module calculates next inclination angle=this antenna constantly of electrical tilt antenna when top rake+stepping angle, and wherein this stepping angle is that this antenna is when top rake and by predetermined policy selection.
Select the strategy of stepping angle a lot, for example can select a fixing angle, because the stepping accuracy of electrical tilt antenna is than higher, therefore the precision of fixing stepping angle adjustment also can be done finely; In addition, the angle that becomes in the time of also can selecting one, for example can adjust at the inclination angle flow process begin select a bigger stepping angle to carry out coarse adjustment, along with the increase of adjusting number of times reduces the stepping angle gradually, carry out the fine setting of antenna tilt, it is very fast that this method makes antenna tilt converge on the speed ratio of optimum angle of incidence.
The antenna management control module is after having sent day line, by a timer being set in order to estimate the load condition of sub-district after the respective antenna inclination angle adjustment, that is take place regularly overtime when this timer, the load condition of then inferring respective cell is good, then the antenna management control module can further calculate next the current angle of declination of inclination angle=this antenna-stepping angle constantly of electrical tilt antenna in view of the above, and continues to send day line; The antenna management control module receives that the parameter that the cell parameter monitoring module reports surpasses the critical value incident if this timer does not take place regularly overtime, timeing closing device then, adjust stepping angle and next inclination angle constantly of calculating electrical tilt antenna that antenna will increase according to incident, and continue to send day line.
BBU shown in Figure 2 further comprises interactive interface, be used to provide with other system and carry out mutual interface, receive all kinds of parameters of the reaction cell load situation of RRU (not only comprise RRU, also comprise general RRU) collection and feedback, and be transmitted to the cell parameter monitoring module as CCU.
RRU as CCU shown in Figure 2 further comprises a day line distribution module, is used to receive the antenna position information that parses after day line wherein, according to this antenna position information sky line is distributed on the corresponding electrical tilt antenna.
It line distribution module determines that according to antenna position information the antenna of required adjustment does not belong to this RRU, then by corresponding RRU distribution day line.
Electrical tilt antenna shown in Figure 2 further comprises a day line Executive Module, is used for after receiving day line, parses antenna tilt information wherein, calls antenna bottom layer driving module (not shown) according to this obliquity information the inclination angle of antenna is adjusted.
The present invention is based on above system embodiment, correspondingly propose to utilize antenna to adjust the method embodiment that the sub-district covers, its flow process comprises the steps: as shown in Figure 3
301,302: after carrying out antenna parameter initialization and initial calibration, monitor all kinds of parameters of the reaction cell load situation of RRU collection in real time;
303～305: when judgement have cell parameter not satisfy the demands and the inclination angle of antenna be not more than in limited time high, the inclination angle that increases antenna;
306～308: when judging that cell parameter satisfies the demands, and judge have the antenna long period to adjust and the inclination angle of antenna when being not less than lower bound, reduce the inclination angle of antenna.
In this embodiment, cell parameter does not satisfy the demands and is meant that relevant parameters exceeds default critical value, such as the percent of call lost exceeds default call loss critical value, and vice versa.
Fig. 4 has represented the reciprocal process of the present invention by BBU, RRU and electrical tilt antenna in the system embodiment shown in Figure 2, realizes said method embodiment of the present invention, and this reciprocal process is described below:
Step 1:BBU carries out antenna parameter initialization and initial calibration by the RRU as CCU to each electrical tilt antenna;
Step 2:BBU inquires about the inclination angle of each electrical tilt antenna by the RRU as CCU, and obtains corresponding antenna tilt query response;
The inclination angle initial value of each electrical tilt antenna that step 3:BBU will inquire is saved in this locality;
After step 4:BBU knows that cell parameter is out-of-limit, inquire about corresponding antenna in cell configuration information, determine next moment inclination angle of antenna according to predetermined strategy;
BBU knows that cell parameter is out-of-limit, for example according to each service call number and refusal calls constantly of record, calculates the percent of call lost=(calls of refusing because of the base station is busy) of knowing this moment/(service call number+refuse because of the base station is busy calls).
Step 5:BBU is packaged into antenna adjustment instruction with the positional information of definite antenna tilt and respective antenna, sends to corresponding electrical tilt antenna by the RRU as CCU;
Step 6: the antenna tilt information that electrical tilt antenna parses in the antenna adjustment instruction is adjusted antenna tilt, and also being about to antenna tilt increases a stepping angle;
Step 7: electrical tilt antenna returns antenna by the RRU as CCU to BBU and adjusts echo message;
Step 8:BBU is provided with and starts the timer work of estimation sub-district the present situation;
The selection of timer duration is carried out according to different demands.For example, the sub-district covering is comparatively stable if desired, can select long duration, otherwise can select short slightly duration.
When step 9:BBU overflows at timer expiry, determine next moment inclination angle of antenna according to the antenna configuration information and the predetermined strategy of the respective cell that inquires;
For example timer duration is selected 5s, if still do not obtain the still out-of-limit report of corresponding cell parameter within 5s, then can infer the current area situation and take a turn for the better.
Step 10:BBU is packaged into antenna adjustment instruction with the positional information of definite antenna tilt and respective antenna, sends to corresponding electrical tilt antenna by the RRU as CCU;
Step 11: the antenna tilt information that electrical tilt antenna parses in the antenna adjustment instruction is adjusted antenna tilt, also is about to antenna tilt and reduces a stepping angle;
This step is mainly considered effective utilization of base station resource.Because after in a single day the sub-district configured, cell load was relatively stable, antenna tilt does not need frequent adjustment yet.If trigger readjusting of antenna tilt, need to consider to recover original configuration later in this period owing to some period network capacity increases suddenly.Because may be after this period, cell load alleviates, and base station resource can so bigger antenna tilt is unnecessary, need be reduced antenna tilt by idle.In addition, when the antenna inclination angle reduced, the adjacent area was disturbed and can be increased gradually, can the suppressing antenna inclination angle further reduce, thereby guarantee that the sub-district rationally covers according to the adjacent area, so such self adaptation adjustment is reasonable and necessary.
Step 12: electrical tilt antenna returns antenna by the RRU as CCU to BBU and adjusts echo message.
Certainly, when step 9 knows that corresponding cell parameter is still out-of-limit as if BBU again before timer expiry overflows, meeting timeing closing device, and repeated execution of steps 4, the antenna tilt that the antenna tilt in next moment of just determining and last time are determined can be different, and for example the stepping angle that increases may be slightly smaller.
The method embodiment that utilizes antenna to adjust the sub-district covering provided by the invention can be applicable to another kind in particular cases: break down in certain base station in network, and then the mobile communication terminal user in this cell coverage area will can not get service.In this case, need manpower investigation base station fault in the past, reactivate this base station again after to be repaired.During this period of time may be very long, even can cause user's strong dissatisfaction.Utilize system and method for the present invention just can solve this matter of great urgency rapidly.
When break down in the base station,, just can not produce yet and disturb the adjacent area owing to do not have signal in its jurisdiction district coverage.Like this, neighbor cell can stop because the adjacent area disturbs increase adjusting in the adjustment process that antenna tilt reduces originally, but the current coverage that then can continue to increase separately, service-user number up to this sub-district is enough big, till perhaps the adjacent area is disturbed and increased once more.But no matter be in which kind of situation, can realize covering by the antenna tilt adjustment of adjacent area to the fault cells scope, thereby solve the base station failure problems temporarily,, and can make the interior mobile communication terminal user of fault cells also obtain service as much as possible for the base station repairing is got the time.
One of ordinary skill in the art will appreciate that all or part of step in the said method can instruct related hardware to finish by program, described program can be stored in the computer-readable recording medium, as read-only memory, disk or CD etc.Alternatively, all or part of step of the foregoing description also can use one or more integrated circuits to realize.Correspondingly, each module in the foregoing description both can realize with form of software, also can adopt example, in hardware to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.
Claims (17)
1. one kind is utilized antenna to adjust the system that the sub-district covers, comprise in electrical tilt antenna, the base station apparatus Base Band Unit and as the Remote Radio Unit of centralized control unit, wherein:
Described Base Band Unit, be used for monitoring in real time the parameter of the reaction cell load situation that Remote Radio Unit collects, and when the parameter of monitoring surpasses default critical value, next inclination angle constantly of sub-district respective antenna is obtained in calculating, and formation day line sends to the Remote Radio Unit as centralized control unit;
Described Remote Radio Unit as centralized control unit, the sky line that is used for receiving is distributed to corresponding electrical tilt antenna;
Described electrical tilt antenna is used for according to described day line the inclination angle of antenna being adjusted.
2. according to the described system of claim 1, it is characterized in that, in described base station apparatus, described Base Band Unit comprises cell parameter monitoring module, antenna control management module and the database that connects successively, and described Remote Radio Unit as centralized control unit comprises a day line distribution module; Wherein:
Described cell parameter monitoring module, be used for after each electrical tilt antenna being carried out antenna parameter initialization and calibration, monitor the parameter of described reaction cell load situation in real time, comprise in service call number and refusal calls, the percent of call lost and the Cell Edge User signal interference ratio one or more; When surpassing the generation of critical value incident, parameter reports described antenna management control module;
Described antenna control management module, be used for after receiving the described incident that described cell parameter monitoring module reports, obtain the antenna configuration information of respective cell from data base querying, by next inclination angle constantly of predetermined policy calculation respective antenna, become described sky line and additional antenna positional information to send to described day line distribution module by the antennal interface protocol encapsulation antenna tilt information;
Described database is used to preserve the antenna configuration information of jurisdiction district, described base station;
Described day line distribution module is used for according to the described antenna position information that parses described day line being distributed to corresponding electrical tilt antenna.
3. according to the described system of claim 2, it is characterized in that,
Described antenna control management module is after receiving described incident, determine the stepping angle that antenna tilt is adjusted according to predetermined strategy, obtain next inclination angle constantly of respective antenna according to the inclination angle calculating of respective antenna current time, the inclination angle that equals the respective antenna current time adds the above step angle degree.
4. according to the described system of claim 2, it is characterized in that, described electrical tilt antenna comprises a day line Executive Module, be used for the described antenna tilt information that basis parses from the described day line that receives, and calling driver module is adjusted to the inclination angle of described antenna.
5. according to the described system of claim 4, it is characterized in that described Base Band Unit further comprises interactive interface, wherein:
Described day line Executive Module returns antenna by described day line distribution module to described Base Band Unit and adjusts echo message after finishing adjustment to described antenna tilt;
Described antenna control management module receives the described antenna adjustment echo message that described sky line Executive Module returns;
Described interactive interface is used for described Remote Radio Unit collected and all kinds of parameters of the described reaction cell load situation of feedback are transmitted to described cell parameter monitoring module;
Described antenna control management module is by the estimation to sub-district the present situation, and sky line that continuation will be packaged into and additional antenna positional information send to the sky line Executive Module of corresponding electrical tilt antenna by sky line distribution module.
6. according to the described system of claim 5, it is characterized in that, after described antenna control management module receives that described antenna is adjusted echo message, be provided with and start a timer job;
Estimate that then sub-district the present situation is good if described regular device is overtime, determine the stepping angle that antenna tilt is adjusted according to predetermined strategy, obtain next inclination angle constantly of respective antenna according to described stepping angle calculation then, the inclination angle that equals the respective antenna current time deducts described stepping angle;
If described regular device is overtime not overtime and continue to receive that the parameter that has that described cell parameter monitoring module reports surpasses the critical value incident, then close described timer, and estimate that thus sub-district the present situation is not good as yet, obtain next inclination angle constantly of respective antenna according to described stepping angle calculation, or determine that according to predetermined strategy stepping angle and the calculating littler than antenna tilt adjustment last time obtains next inclination angle constantly of respective antenna, the inclination angle that equals the respective antenna current time adds the above step angle degree.
7. according to each described system of claim 1 to 6, it is characterized in that,
When break down in the base station, each neighbor cell in the area under one's jurisdiction, described base station of then breaking down reduces to increase separately coverage by the respective antenna inclination angle, up to the service call number of described neighbor cell adjacent area enough big or described neighbor cell disturb increase till.
8. one kind is utilized antenna to adjust the base station apparatus that the sub-district covers, and comprises Base Band Unit and as the Remote Radio Unit of centralized control unit, wherein:
Described Base Band Unit, be used for monitoring in real time the parameter of the reaction cell load situation that Remote Radio Unit collects, and when the parameter of monitoring surpasses default critical value, next inclination angle constantly of sub-district respective antenna is obtained in calculating, and formation day line sends to the Remote Radio Unit as centralized control unit;
Described Remote Radio Unit as centralized control unit, the described day line that is used for receiving is distributed to corresponding electrical tilt antenna.
9. according to the described device of claim 8, it is characterized in that, described Base Band Unit comprises cell parameter monitoring module, antenna control management module and the database that connects successively, and described Remote Radio Unit as centralized control unit comprises a day line distribution module; Wherein:
Described cell parameter monitoring module, be used for after each electrical tilt antenna being carried out antenna parameter initialization and calibration, monitor the parameter of described reaction cell load situation in real time, comprise in service call number and refusal calls, the percent of call lost and the Cell Edge User signal interference ratio one or more; When surpassing the generation of critical value incident, parameter reports described antenna management control module;
Described antenna control management module, be used for after receiving the described incident that described cell parameter monitoring module reports, obtain the antenna configuration information of respective cell from data base querying, determine the stepping angle that antenna tilt is adjusted by predetermined strategy, inclination angle and described stepping angle calculation according to the respective antenna current time are obtained next inclination angle constantly of respective antenna, become described sky line and additional antenna positional information to send to described day line distribution module by the antennal interface protocol encapsulation antenna tilt information;
Described database is used to preserve the antenna configuration information of jurisdiction district, described base station;
Described day line distribution module is used for according to the described antenna position information that parses described day line being distributed to corresponding electrical tilt antenna.
10. according to the described device of claim 9, it is characterized in that described Base Band Unit further comprises interactive interface, wherein:
Described antenna control management module receives the antenna adjustment echo message that described electrical tilt antenna returns;
Described interactive interface is used for described Remote Radio Unit collected and all kinds of parameters of the described reaction cell load situation of feedback are transmitted to described cell parameter monitoring module;
Described antenna control management module is by the estimation to sub-district the present situation, and sky line that continuation will be packaged into and additional antenna positional information send to the sky line Executive Module of corresponding electrical tilt antenna by described sky line distribution module.
11. according to the described device of claim 10, it is characterized in that,
After described antenna control management module receives that described antenna is adjusted echo message, be provided with and start a timer job;
If the overtime then described antenna control management module of described regular device estimates that sub-district the present situation is good, determine the stepping angle that antenna tilt is adjusted according to predetermined strategy, obtain next inclination angle constantly of respective antenna according to described stepping angle calculation, the inclination angle that equals the respective antenna current time deducts described stepping angle;
If described regular device is not overtime and continue to receive that the parameter that has that described cell parameter monitoring module reports surpasses the critical value incident, then described antenna control management module is closed described timer, and estimate that thus sub-district the present situation is not good as yet, obtain next inclination angle constantly of respective antenna according to described stepping angle calculation, or determine that according to predetermined strategy stepping angle and the calculating littler than antenna tilt adjustment last time obtains next inclination angle constantly of respective antenna, the inclination angle that equals the respective antenna current time adds the above step angle degree.
12. one kind is utilized antenna to adjust the electrical tilt antenna device that the sub-district covers, comprise a day line Executive Module, be used for the antenna tilt information that parses according to from the sky line that receives as the Remote Radio Unit of centralized control unit, and calling driver module is adjusted to the inclination angle of antenna.
13. according to the described device of claim 12, it is characterized in that,
Described day line Executive Module returns antenna to Base Band Unit to described Base Band Unit by described Remote Radio Unit as centralized control unit and adjusts echo message after finishing adjustment to the inclination angle of antenna.
14. one kind is utilized antenna to adjust the method that the sub-district covers, relate in electrical tilt antenna and the base station Base Band Unit and as the Remote Radio Unit of centralized control unit, this method comprises:
When the parameter that described Base Band Unit monitors the reaction cell load situation that Remote Radio Unit collects in real time surpasses critical value, the inclination angle that increases this corresponding electrical tilt antenna in sub-district, and form day line and send to Remote Radio Unit as centralized control unit;
The described described day line that will receive as the Remote Radio Unit of centralized control unit is distributed to corresponding electrical tilt antenna;
Described electrical tilt antenna is adjusted the inclination angle of antenna according to described day line.
15. in accordance with the method for claim 14, it is characterized in that, specifically comprise:
Described Base Band Unit is after carrying out antenna parameter initialization and calibration to each electrical tilt antenna, monitor the parameter of described reaction cell load situation in real time, comprise in service call number and refusal calls, the percent of call lost and the Cell Edge User signal interference ratio one or more; When parameter surpasses critical value, the antenna configuration information of respective cell is obtained in inquiry, determine the stepping angle that antenna tilt is adjusted by predetermined strategy, inclination angle and described stepping angle calculation according to the respective antenna current time are obtained next inclination angle constantly of respective antenna, become described sky line and additional antenna positional information to send to described Remote Radio Unit as centralized control unit by the antennal interface protocol encapsulation antenna tilt information;
Described Remote Radio Unit as centralized control unit is distributed to corresponding electrical tilt antenna according to the described antenna position information that parses with described day line;
Described electrical tilt antenna is adjusted the inclination angle of antenna according to the described antenna tilt information that parsed the line from described day after receiving described sky line.
16. in accordance with the method for claim 15, it is characterized in that,
After described electrical tilt antenna is finished adjustment to described antenna tilt, return antenna by described Remote Radio Unit to described Base Band Unit and adjust echo message as centralized control unit;
After described Base Band Unit receives that described antenna is adjusted echo message, be provided with and start a timer job;
Estimate that then sub-district the present situation is good if described regular device is overtime, determine the stepping angle that antenna tilt is adjusted according to predetermined strategy, obtain next inclination angle constantly of respective antenna according to described stepping angle calculation, the inclination angle that equals the respective antenna current time deducts described stepping angle;
If described regular device is not overtime and continue to know have parameter to surpass critical value, then close described timer, and estimate that thus sub-district the present situation is not good as yet, obtain next inclination angle constantly of respective antenna according to described stepping angle calculation, or determine that according to predetermined strategy stepping angle and the calculating littler than antenna tilt adjustment last time obtains next inclination angle constantly of respective antenna, the inclination angle that equals the respective antenna current time adds the above step angle degree.
17. according to each described method of claim 14 to 16, it is characterized in that,
When break down in the base station, each neighbor cell in the area under one's jurisdiction, described base station of then breaking down reduces to increase separately coverage by the respective antenna inclination angle, up to the service call number of described neighbor cell adjacent area enough big or described neighbor cell disturb increase till.
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| CN201010219361.7A CN102300221B (en) | 2010-06-25 | 2010-06-25 | A kind of system, device and method utilizing tested rotating platform MPS process |
| PCT/CN2010/078087 WO2011160375A1 (en) | 2010-06-25 | 2010-10-25 | System, apparatus and method for adjusting cell coverage area by using antennae |
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| CN201010219361.7A CN102300221B (en) | 2010-06-25 | 2010-06-25 | A kind of system, device and method utilizing tested rotating platform MPS process |
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| WO2011160375A1 (en) | 2011-12-29 |
| CN102300221B (en) | 2016-03-30 |
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