CN102883386A - Cell switching method and device in LTE network - Google Patents
Cell switching method and device in LTE network Download PDFInfo
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- CN102883386A CN102883386A CN2012103248086A CN201210324808A CN102883386A CN 102883386 A CN102883386 A CN 102883386A CN 2012103248086 A CN2012103248086 A CN 2012103248086A CN 201210324808 A CN201210324808 A CN 201210324808A CN 102883386 A CN102883386 A CN 102883386A
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Abstract
The invention provides a cell switching method and a cell switching device in a LTE (Long Term Evolution) network, which can be used for considering the load conditions of cells in the process of carrying out cell switching so as to improve the utilization rate of the network, as well as the switching success rate, and ensure the service quality. The method comprises the following steps: a base station receives a measurement report on the basis of a power, which is uploaded by first user equipment, wherein the measurement report on the basis of the power comprises each neighbor cell of the first user equipment and a reference signal receiving power of each neighbor cell and the neighbor cells are cells adjacent to a cell in which the first user equipment is positioned; the base station acquires load information of each neighbor cell of the first user equipment; the base station sorts the neighbor cells according to the reference signal receiving powers and the load information so as to determine the overall rank of each neighbor cell; and the base station selects a target cell according to the overall rank of each neighbor cell and switches the first user equipment into the target cell.
Description
Technical field
The application relates to the communication technology, particularly relates to cell switching method and device in a kind of LTE network.
Background technology
In Long Term Evolution (Long Term Evolution, the LTE) network, switch the residential quarter is initiatively to be initiated by subscriber equipment (User Equipment, UE).UE need to carry out the residential quarter when switching detecting, the meeting reporting measurement reports, then the base station is according to Reference Signal Received Power (the Reference Signal Receiving Power of each adjacent area in the measurement report, RSRP) select target residential quarter, for example, select prominent residential quarter as Target cell.If Target cell is chosen successfully, then the base station can send switching command to UE, and UE is switched to described Target cell, if if the residential quarter is selected unsuccessfully, then finish this handoff procedure.
But, in the LTE network, owing to enter the UE quantity of residential quarter and the traffic carrying capacity of UE has randomness and time variation, thereby may cause the load imbalance of network small area, and then affect quality of service, and cause the waste of resource.
For example, UE quantity traffic carrying capacity considerably less or UE is very little in some residential quarter, even does not have UE in the residential quarter, causes the load too low of described residential quarter, and this moment, the network of described residential quarter was not fully utilized, and had caused the waste of resource.
And for example, UE quantity traffic carrying capacity very many or UE is very large in some residential quarter, causes this cell load excessive, and then causes inter-user interference increase in this residential quarter, and quality of service is difficult to be guaranteed.And, if carrying out the residential quarter as Target cell, the residential quarter that described load is excessive switches, then probably cause the residential quarter handoff failure, reduced the success rate of switching, even handover success, quality of service is difficult to be guaranteed equally.
Therefore, the urgent technical problem that solves of those skilled in the art is to propose the cell switching method in a kind of LTE network, can be at the loading condition that carries out considering when switch the residential quarter residential quarter, thereby increase network utilization, improve handover success rate, and guarantee quality of service.
Summary of the invention
The application provides cell switching method and the device in a kind of LTE network, can carry out considering the loading condition of residential quarter when switch the residential quarter, thereby increase network utilization, and improves handover success rate, and guarantees quality of service.
In order to address the above problem, the application discloses the cell switching method in a kind of LTE network, comprising:
The base station receives the measurement report based on power that first user equipment is uploaded, wherein, each adjacent area that comprises described first user equipment in the described measurement report based on power, and the Reference Signal Received Power of each adjacent area, described adjacent area are the residential quarter adjacent with residential quarter, first user equipment place;
The base station obtains the information on load of each adjacent area of described first user equipment;
Sorting to each adjacent area according to described Reference Signal Received Power and information on load in the base station, determines the overall ranking of each adjacent area;
The base station switches to Target cell according to the overall ranking select target residential quarter of each adjacent area with described first user equipment.
Preferably, described information on load comprises the load capacity of each adjacent area; The base station is according to described Reference Signal Received Power and information on load, sorted in each adjacent area, determine the rank of each adjacent area, comprising: the size of each adjacent area according to described Reference Signal Received Power sorted in the base station, obtains the power rank of each adjacent area; The base station according to how much the sorting of load capacity in the described information on load, obtains the load capacity rank of each adjacent area with each adjacent area; According to power rank and the load capacity rank of each adjacent area, obtain the overall ranking of described each adjacent area.
Preferably, described power rank and load capacity rank according to each adjacent area are obtained the overall ranking of described each adjacent area, comprising: obtain respectively the first weight of described power rank, and the second weight of described load capacity rank; For each adjacent area, adopt respectively described the first weight that the power rank is weighted, and adopt described the second weight that the load capacity rank is weighted; With the power rank after the weighting and the load capacity rank addition after the weighting and ordering, obtain the overall ranking of described each adjacent area.
Preferably, described base station obtains before the measurement report based on power that first user equipment uploads, and also comprises: the load information of the periodic detected cells in base station, and wherein, described load information comprises the load capacity of each residential quarter; When the load capacity that detects the residential quarter when the base station surpasses threshold value, obtain the edge customer equipment that described load capacity surpasses the residential quarter of threshold value, with described edge customer equipment as first user equipment.
Preferably, describedly obtain the edge customer equipment that described load capacity surpasses the residential quarter of threshold value, comprising: obtain the second subscriber equipment that described load capacity surpasses the residential quarter of threshold value; Send location measurement request to described the second subscriber equipment, described location measurement request is used for asking location-based measurement report; Receive the location-based measurement report that described each second subscriber equipment sends, and according to described location-based measurement report edge calculation subscriber equipment.
Preferably, described base station obtains the information on load of each adjacent area of described first user equipment, comprising: the base station is measured the adjacent area that belongs to this base station of described first user equipment, obtains the information on load of this adjacent area.
Preferably, described base station obtains the information on load of each adjacent area of described first user equipment, comprising: the base station at this place, adjacent area is inquired about to the adjacent area that does not belong to this base station of described first user equipment in the base station; The base station obtains the information on load of this adjacent area to the base station at this place, adjacent area.
Accordingly, disclosed herein as well is the residential quarter switching device shifter in a kind of LTE network, comprising:
Receiver module, be used for the base station and receive the measurement report based on power that first user equipment is uploaded, wherein, each adjacent area that comprises described first user equipment in the described measurement report based on power, with the Reference Signal Received Power of each adjacent area, described adjacent area is the residential quarter adjacent with residential quarter, first user equipment place;
Acquisition module is used for the base station and obtains the information on load of each adjacent area of described first user equipment;
Order module is used for the base station according to described Reference Signal Received Power and information on load, is sorted in each adjacent area, obtains the overall ranking of each adjacent area;
Select and handover module, be used for the base station according to the overall ranking select target residential quarter of each adjacent area, described first user equipment is switched to Target cell.
Preferably, described information on load comprises the load capacity of each adjacent area; Described order module comprises: power ordering submodule, and be used for the base station size of each adjacent area according to described Reference Signal Received Power sorted, obtain the power rank of each adjacent area; Load capacity ordering submodule, be used for the base station with each adjacent area according to how much the sorting of described information on load load capacity, obtain the load capacity rank of each adjacent area; The overall ranking submodule is used for power rank and load capacity rank according to each adjacent area, obtains the overall ranking of described each adjacent area.
Preferably, described overall ranking submodule comprises: the Weight Acquisition unit, and for the first weight of obtaining respectively described power rank, and the second weight of described load capacity rank; Weighted units is used for for each adjacent area, adopts respectively described the first weight that the power rank is weighted, and adopts described the second weight that the load capacity rank is weighted; Addition and sequencing unit are used for the overall ranking of described each adjacent area is obtained in the power rank after the weighting and the load capacity rank addition after the weighting and ordering.
Preferably, described device also comprises: detection module, and for the load information of the periodic detected cells in base station, wherein, described load information comprises the load capacity of each residential quarter; The base station requests module is used for obtaining described load capacity above the edge customer equipment of the residential quarter of threshold value when load capacity that the base station detects the residential quarter surpasses threshold value, with described edge customer equipment as first user equipment.
Preferably, described base station requests module comprises: obtain submodule, be used for obtaining the second subscriber equipment that described load capacity surpasses the residential quarter of threshold value; The request submodule is used for sending location measurement request to described the second subscriber equipment, and described location measurement request is used for asking location-based measurement report; Receive and calculating sub module, be used for receiving the location-based measurement report that described each second subscriber equipment sends, and according to described location-based measurement report edge calculation subscriber equipment.
Preferably, described acquisition module comprises: first obtains submodule, is used for the base station adjacent area that belongs to this base station of described first user equipment is measured, and obtains the information on load of this adjacent area.
Preferably, described acquisition module comprises: the inquiry submodule, be used for the base station to the adjacent area that does not belong to this base station of described first user equipment, and inquire about the base station at this place, adjacent area; Second obtains submodule, is used for the base station and obtains the information on load of this adjacent area to the base station at this place, adjacent area.
Compared with prior art, the application comprises following advantage:
At first, the application reaches the purpose of load balancing in order to switch in the residential quarter, except receiving the measurement report based on power that first user equipment uploads, also can obtain the information on load of each adjacent area of described first user equipment.Then consider described Reference Signal Received Power and information on load, determining the overall ranking of an adjacent area, and according to the overall ranking select target residential quarter of each adjacent area, described first user equipment is switched to Target cell.Thereby so that the application reaches the load balancing in the residential quarter, thereby increases network utilization, and guaranteed the quality of service of subscriber equipment in the residential quarter at the loading condition that carries out considering when switch the residential quarter residential quarter, improved simultaneously the success rate of switching.
Secondly, the application at first determines the power rank of the RSRP size of each adjacent area when determining the overall ranking of residential quarter, and how many load capacity ranks of load capacity.And then according to the first weight of described power rank the power rank is weighted, and according to the second weight of described load capacity rank the load capacity rank is weighted, finally determine the overall ranking of residential quarter.The application considers the weight separately of RSRP and load capacity, thereby can reach better the purpose of load balancing.
Again, the application can comprise that two kinds are carried out the condition that switch the residential quarter, and a kind of is that switch the mobile-initiated residential quarter of subscriber equipment; Another kind is that the base station detects the residential quarter switching that cell-overload triggers.Subscriber equipment is in movement, in order to guarantee professional normally carrying out, can trigger that carrying out the residential quarter switches.When the base station surpasses threshold value in the load capacity of determining the residential quarter, in order to guarantee professional quality, can trigger equally the edge customer equipment in this residential quarter is switched.
Again, the application is when obtaining the information on load of adjacent area, the adjacent area that belongs to this base station to described first user equipment, the base station can directly obtain the information on load of this adjacent area, the adjacent area that does not belong to this base station to described first user equipment, the base station can by mutual with the base station at this place, adjacent area, get access to the information on load of this adjacent area.Therefore the application can get access to the information on load of each adjacent area, is conducive to realize load balancing.
Description of drawings
Fig. 1 is the cell switching method flow chart in the described a kind of LTE network of the embodiment of the present application;
Fig. 2 is adjacent area rank flow chart in the cell switching method in the described a kind of LTE network of the application's preferred embodiment;
Fig. 3 is overall ranking flow chart in the cell switching method in the described a kind of LTE network of the application's preferred embodiment;
Fig. 4 is that information on load obtains flow chart in the cell switching method in the described a kind of LTE network of the application's preferred embodiment;
Fig. 5 is that edge customer equipment is determined flow chart in the cell switching method in the described a kind of LTE network of the application's preferred embodiment;
Fig. 6 is the cell switching method schematic diagram in the described a kind of LTE network of the application's preferred embodiment;
Fig. 7 is the residential quarter switching device shifter structure chart in the described a kind of LTE network of the embodiment of the present application;
Fig. 8 is the residential quarter switching device shifter structure chart in the described a kind of LTE network of the application's preferred embodiment.
Embodiment
For above-mentioned purpose, the feature and advantage that make the application can become apparent more, below in conjunction with the drawings and specific embodiments the application is described in further detail.
LTE network, UE need to carry out the residential quarter when switching detecting, can reporting measurement reports, and then the base station is according to the RSRP select target residential quarter of each adjacent area in the measurement report.
But, in the LTE network, owing to enter the UE quantity of residential quarter and the traffic carrying capacity of UE has randomness and time variation, thereby may cause the load imbalance of network small area, and then affect quality of service, and cause the waste of resource.
The application provides the cell switching method in a kind of LTE network, the base station can be according to RSRP and the load information comprehensive selection Target cell of described residential quarter, at the loading condition that carries out considering when switch the residential quarter residential quarter, thereby increase network utilization, improve handover success rate, and guarantee quality of service.
With reference to Fig. 1, provided the cell switching method flow chart in the described a kind of LTE network of the embodiment of the present application.
In the LTE system, during the first user equipment moving, when reaching measurement report and report thresholding, mobile device can report to the base station measurement report based on power, and then the base station can receive the measurement report based on power that first user equipment is uploaded.Wherein, described measurement report based on power is corresponding to handoff algorithms.Described base station is the base station of residential quarter, first user equipment place.
Certainly also may have other reasons, so that the base station can receive the measurement report based on power that first user equipment is uploaded, the application does not do restriction to this.
Each adjacent area that comprises described first user equipment in the described measurement report based on power, and the RSRP of each adjacent area.Described adjacent area is the residential quarter adjacent with residential quarter, first user equipment place.In the implementation, can there be a neighborhood region correlation chart in each base station, have preserved each residential quarter in the base station in the described neighborhood region correlation chart, and the adjacent area of each residential quarter.Because neighborhood region correlation chart is a kind of prior art, so the application does not discuss in detail.
For example, the residential quarter at first user device A place is residential quarter 1, residential quarter 1 and residential quarter 2 are adjacent in the geographical position, then residential quarter 2 is adjacent areas of residential quarter 1, be that residential quarter 2 is adjacent areas of first user device A, the RSRP that comprises residential quarter 2 and residential quarter 2 in the measurement report based on power that the first user device A is uploaded can comprise the RSRP of other adjacent area and described adjacent area certainly.
Reach the purpose of load balancing in order to switch in the residential quarter, the base station also will obtain the information on load of each adjacent area of described first user equipment except the RSRP of each adjacent area that will obtain first user equipment and described adjacent area.
Wherein, described information on load can comprise the quantity of subscriber equipment in each adjacent area, and the traffic carrying capacity of each subscriber equipment, can also comprise the resource utilization of adjacent area etc.
At the RSRP and the information on load that carry out to consider when switch the residential quarter each adjacent area in the base station, the Target cell when deciding which adjacent area of final selection as switching.Specific practice as: RSRP and information on load according to each adjacent area sort to each adjacent area, obtain the overall ranking of each adjacent area, and for example, dispose respectively the weight of RSRP and the weight of information on load, then RSRP and information on load are weighted summation, sorting obtains the overall ranking of each adjacent area again.
After the above-mentioned overall ranking that gets access to each adjacent area, the base station can be according to described rank select target residential quarter, and the residential quarter switching behind the selected target residential quarter, just can be carried out to described first user equipment as Target cell in the residential quarter of for example selecting to come first place.Wherein, described Target cell is the residential quarter that first user equipment will switch, and be Target cell if select the residential quarter 2 in the example, then can be from the residential quarter when carrying out the residential quarter switching 1 switches to residential quarter 2.
In sum, the application reaches the purpose of load balancing in order to switch in the residential quarter, except receiving the measurement report based on power that first user equipment uploads, also can obtain the information on load of each adjacent area of described first user equipment.Then consider described Reference Signal Received Power and information on load, determining the overall ranking of an adjacent area, and according to the overall ranking select target residential quarter of each adjacent area, described first user equipment is switched to Target cell.Thereby so that the application reaches the load balancing in the residential quarter, thereby increases network utilization, and guaranteed the quality of service of subscriber equipment in the residential quarter at the loading condition that carries out considering when switch the residential quarter residential quarter, improved simultaneously the success rate of switching.
With reference to Fig. 2, provided adjacent area rank flow chart in the cell switching method in the described a kind of LTE network of the application's preferred embodiment.
Preferably, described information on load comprises the load capacity of each adjacent area, and described load capacity can adopt the quantity of subscriber equipment in each adjacent area, and the traffic carrying capacity of each subscriber equipment is weighed.
Sorting to each adjacent area according to described Reference Signal Received Power and information on load in the base station, obtains the rank of each adjacent area, comprising:
Can sort the size of each adjacent area according to described RSRP, as adopt descending order to sort after receiving the RSRP of each adjacent area of first user equipment in the base station, and obtain the power rank after the ordering of each adjacent area.
After the base station gets access to the information on load of each adjacent area of first user equipment, can with each adjacent area how much sorting according to load capacity in the described information on load, for example according to load capacity order from less to more in each adjacent area, such as the quantity order from less to more of subscriber equipment, and the traffic carrying capacity of each subscriber equipment order from less to more.Then obtain each adjacent area by load capacity what the ordering after the load capacity rank.
Step 203 according to power rank and the load capacity rank of each adjacent area, is obtained the overall ranking of described each adjacent area.
After getting access to the power rank and load capacity rank of each adjacent area, can be according to the overall ranking of certain described each adjacent area of Rule.For example, with again ordering after power rank and the addition of load capacity rank, get access to overall ranking; And for example, the weight of power rank and load capacity rank is set, described power rank and load capacity rank are weighted summation to obtain overall ranking.
Step 203 specifically can comprise the steps:
With reference to Fig. 3, provided overall ranking flow chart in the cell switching method in the described a kind of LTE network of the application's preferred embodiment.
Step 301 is obtained respectively the first weight of described power rank and the second weight of described load capacity rank;
The application has preset the first weight of power rank and the second weight of load capacity rank, when carrying out overall ranking, at first will obtain the first weight of described power rank and the second weight of load capacity rank.As the first weight is set is that 0.4, the second weight is 0.6.
Step 302 for each adjacent area, adopts respectively described the first weight that the power rank is weighted, and adopts described the second weight that the load capacity rank is weighted;
For each adjacent area, adopt described the first weight that the power rank is weighted, and adopt described the second weight that the load capacity rank is weighted.
For example, described adjacent area comprises residential quarter 2 and residential quarter 3, and the power rank of residential quarter 2 is first, and the load capacity rank is second, and the power rank of residential quarter 3 is seconds, and the load capacity rank is first.
Then employing first weight of residential quarter 2 is 1*0.4=0.4 after the power rank is weighted, and adopts the second weight that the load capacity rank is weighted the rear 2*0.6=1.2 that is.
Employing first weight of residential quarter 3 is 2*0.4=0.8 after the power rank is weighted, and adopts the second weight that the load capacity rank is weighted the rear 1*0.6=0.6 that is.
Step 303 with the power rank after the weighting and the load capacity rank addition after the weighting and ordering, is obtained the overall ranking of described each adjacent area.
With the power rank after the weighting and the load capacity rank addition after the weighting, then the result after the addition is sorted, according to described overall ranking of obtaining each adjacent area.
For example, the overall ranking of above-mentioned residential quarter 2 is 0.4+1.2=1.6, and the overall ranking of residential quarter 3 is 0.8+0.6=1.4.The overall ranking of residential quarter 3 is forward, so be chosen as Target cell.
In sum, the application at first determines the power rank of the RSRP size of each adjacent area when determining the overall ranking of residential quarter, and how many load capacity ranks of load capacity.And then according to the first weight of described power rank the power rank is weighted, and according to the second weight of described load capacity rank the load capacity rank is weighted, finally determine the overall ranking of residential quarter.The application considers the weight separately of RSRP and load capacity, thereby can reach better the purpose of load balancing.
With reference to Fig. 4, provided that information on load obtains flow chart in the cell switching method in the described a kind of LTE network of the application's preferred embodiment.
Preferably, the base station obtains the information on load of each adjacent area of described first user equipment, comprising:
In the measurement report based on power that first user equipment is uploaded, comprise each adjacent area of described first user equipment, for load balancing, need to obtain the information on load of described each adjacent area.Then at first will determine the base station that described each adjacent area is affiliated, could determine whom information on load measured by, whether each adjacent area that therefore will detect respectively described first user equipment belongs to this base station, and described this base station is the base station of residential quarter, first user equipment place.
If, follow-up execution in step 402 then, if not, follow-up execution in step 403 then.
If certain adjacent area of described first user equipment belongs to this base station, then the base station can be measured the adjacent area that belongs to this base station of described first user equipment, can obtain the information on load of this adjacent area by measuring, then described information on load can be kept in the base station.
If certain adjacent area of described first user equipment does not belong to this base station, then the base station cannot directly be measured this residential quarter, so the base station can be to the adjacent area that does not belong to this base station of described first user equipment, and the base station at this place, adjacent area can be inquired about in the base station.
Then the request of measuring can be initiated to the base station at place, adjacent area in the base station, and the base station measurement at place, adjacent area can feed back to the base station of request, the base station of residential quarter, first user equipment place behind the information on load of this adjacent area.The base station can be stored in this base station behind the information on load that obtains the adjacent area that does not belong to this base station.
Wherein, if certain adjacent area of described first user equipment is not the residential quarter in the described base station, then X2 interface can be passed through in the base station, carries out the mutual of load information with the base station at this place, adjacent area, to obtain the load information of this adjacent area.In order to reduce the expense of X2 interface, only have when preparing to switch, Cai send the load information query requests by described base station to this base station, place, adjacent area, trigger the mutual of load information.
In sum, the application is when obtaining the information on load of adjacent area, the adjacent area that belongs to this base station to described first user equipment, the base station can directly obtain the information on load of this adjacent area, the adjacent area that does not belong to this base station to described first user equipment, the base station can by mutual with the base station at this place, adjacent area, get access to the information on load of this adjacent area.Therefore the application can get access to the information on load of each adjacent area, is conducive to realize load balancing.
The application can comprise that in order to make the load balancing of base station small area as far as possible two kinds are carried out the condition that switch the residential quarter, and a kind of is that switch the mobile-initiated residential quarter of subscriber equipment; Another kind is that the base station detects the residential quarter switching that cell-overload triggers.
1, switch the mobile-initiated residential quarter of subscriber equipment;
The base station has disposed the measurement report thresholding of subscriber equipment, when subscriber equipment detects when reaching the measurement report thresholding, just can measure each adjacent area, and for example, the power of subscriber equipment in this residential quarter is excessively low, reaches the measurement report thresholding.
First user equipment is in movement, because the variation of position etc., meeting is so that the parameter of first user equipment and minizone, first user equipment place reaches the measurement report thresholding, lower such as power ratio, execution that can't supporting business, therefore in order to guarantee professional normally carrying out, first user equipment can be measured its each adjacent area, and generates measurement report according to measurement result.Respective base station can receive the residential quarter handover request of described first user equipment, then first user equipment is carried out the follow-up flow process that switch the residential quarter, for example, the base station is according to described measurement report judgement adjacent area, and the base station sends switching command notice first user equipment and switches etc.
2, the base station detects the residential quarter switching that cell-overload triggers.
Described base station obtains before the measurement report based on power that first user equipment uploads, and also comprises:
The load information of the periodic detected cells in base station, wherein, described load information comprises the load capacity of each residential quarter that belongs to this base station; When the load capacity that detects the residential quarter when the base station surpasses threshold value, obtain the edge customer equipment that described load capacity surpasses the residential quarter of threshold value, with described edge customer equipment as first user equipment.
When the application can also detect cell-overload in the base station, switched by the base station triggers residential quarter, one of criterion that switch the base station triggers residential quarter is the threshold value of load capacity, the application has preset threshold value and has been used for the load capacity of residential quarter is limited, to reach the purpose of load balancing, can also effectively guarantee the quality of service of residential quarter simultaneously.
The load information of base station periodic detected cells when work, wherein, described load information comprises the load capacity of each residential quarter that belongs to this base station.In case when detecting the load capacity of certain residential quarter in this base station and surpassing threshold value, just need to the load capacity of described residential quarter be limited, for example, some subscriber equipmenies in the described residential quarter can be switched in other residential quarters, need to obtain the edge customer equipment that described load capacity surpasses the residential quarter of threshold value this moment, described edge customer equipment as first user equipment, is namely carried out the residential quarter to described edge customer equipment and switches.
Wherein, described edge customer equipment can for example, calculate the marginal position that certain subscriber equipment is in described residential quarter for subscriber equipment residing position in the residential quarter, can determine that then described subscriber equipment is the edge customer equipment of this residential quarter.
With reference to Fig. 5, provided in the cell switching method in the described a kind of LTE network of the application's preferred embodiment edge customer equipment and determined flow chart.
Preferably, describedly obtain the edge customer equipment that described load capacity surpasses the residential quarter of threshold value, concrete grammar comprises:
Step 501 is obtained the second subscriber equipment that described load capacity surpasses the residential quarter of threshold value;
Detect the load capacity of certain residential quarter above after the threshold value, can obtain all second subscriber equipmenies that described load capacity surpasses the residential quarter of threshold value.The residential quarter connects subscriber equipment, and for subscriber equipment provides service, then described load capacity is the second subscriber equipment above the subscriber equipment of the residential quarter connection of threshold value.
Step 502 sends location measurement request to described the second subscriber equipment, and described location measurement request is used for asking location-based measurement report;
The second subscriber equipment that surpasses the residential quarter of threshold value to load capacity sends location measurement request, and by described location measurement request, the base station can be to the location-based measurement report of described the second user equipment requests.Described location-based measurement report can judge corresponding to the Inter-Cell Interference Coordination algorithm whether described subscriber equipment is edge customer equipment.
Step 503 receives the location-based measurement report that described each second subscriber equipment sends, and according to described location-based measurement report edge calculation subscriber equipment.
After described the second subscriber equipment is measured and generated location-based measurement report, can send to the base station, the base station just can receive the location-based measurement report of described each second subscriber equipment transmission.By described location-based measurement report, can get access to the second subscriber equipment corresponding to described location-based measurement report, the position in this residential quarter, and then determine whether edge customer equipment of described the second subscriber equipment.Follow-up edge subscriber equipment carries out the residential quarter and switches.
In sum, the application can comprise that two kinds are carried out the condition that switch the residential quarter, and a kind of is that switch the mobile-initiated residential quarter of subscriber equipment; Another kind is that the base station detects the residential quarter switching that cell-overload triggers.Subscriber equipment is in movement, in order to guarantee professional normally carrying out, can trigger that carrying out the residential quarter switches.When the base station surpasses threshold value in the load capacity of determining the residential quarter, in order to guarantee professional quality, can trigger equally the edge customer equipment in this residential quarter is switched.
With reference to Fig. 6, provided the cell switching method schematic diagram in the described a kind of LTE network of the application's preferred embodiment.
When switch the residential quarter, at first be the initiation of switching, comprise following two kinds of situations:
1, base station triggers: the base station obtains the load information of residential quarter, then detects described load information and whether reaches threshold value: if not, then wait for reaching and again detect detection time; If then determine the edge customer equipment of this residential quarter.This moment, the residential quarter switching can be carried out to described edge customer equipment in the base station.
2, subscriber equipment triggers: subscriber equipment moves middle triggering cell and switches, and reporting measurement reports.This moment, the residential quarter switching can be carried out to the subscriber equipment of described transmission handover request in the base station.
Next is the selection of Target cell:
The base station obtains the measurement report based on power of user equipment to report, comprises each adjacent area of described first user equipment in the described measurement report based on power, and the Reference Signal Received Power of each adjacent area.Simultaneously the base station can also obtain the information on load of each adjacent area, again according to Reference Signal Received Power and the information on load of described each adjacent area, and the select target residential quarter.Judge whether Target cell is chosen successfully.
The switching of residential quarter at last:
If the non-selected success of above-mentioned Target cell, namely Target cell is selected unsuccessfully, and then this handoff failure is proceeded the switching of next time.If above-mentioned Target cell is chosen successfully, then subscriber equipment is switched to described Target cell.
With reference to Fig. 7, provided the residential quarter switching device shifter structure chart in the described a kind of LTE network of the embodiment of the present application.
The application also provides the residential quarter switching device shifter in a kind of LTE network, comprising: receiver module 11, acquisition module 12, order module 13 and selection and handover module 14, wherein:
Select and handover module 14, be used for the base station according to the overall ranking select target residential quarter of each adjacent area, described first user equipment is switched to Target cell.
Preferably, described information on load comprises the load capacity of each adjacent area; Described order module 13 comprises:
Power ordering submodule is used for the base station size of each adjacent area according to described Reference Signal Received Power is sorted, and obtains the power rank of each adjacent area
Load capacity ordering submodule, be used for the base station with each adjacent area according to how much the sorting of described information on load load capacity, obtain the load capacity rank of each adjacent area;
The overall ranking submodule is used for power rank and load capacity rank according to each adjacent area, obtains the overall ranking of described each adjacent area.
Preferably, described overall ranking submodule comprises:
The Weight Acquisition unit, for the first weight of obtaining respectively described power rank, and the second weight of described load capacity rank;
Weighted units is used for for each adjacent area, adopts respectively described the first weight that the power rank is weighted, and adopts described the second weight that the load capacity rank is weighted;
Addition and sequencing unit are used for the overall ranking of described each adjacent area is obtained in the power rank after the weighting and the load capacity rank addition after the weighting and ordering.
Preferably, described acquisition module comprises:
First obtains submodule, is used for the base station adjacent area that belongs to this base station of described first user equipment is measured, and obtains the information on load of this adjacent area;
The inquiry submodule is used for the base station to the adjacent area that does not belong to this base station of described first user equipment, inquires about the base station at this place, adjacent area;
Second obtains submodule, is used for the base station and obtains the information on load of this adjacent area to the base station at this place, adjacent area.
With reference to Fig. 8, provided the residential quarter switching device shifter structure chart in the described a kind of LTE network of the application's preferred embodiment.
Base station requests module 22 is used for obtaining described load capacity above the edge customer equipment of the residential quarter of threshold value when load capacity that the base station detects the residential quarter surpasses threshold value, with described edge customer equipment as first user equipment.
Preferably, described base station requests module 22 comprises:
Obtain submodule, be used for obtaining the second subscriber equipment that described load capacity surpasses the residential quarter of threshold value;
The request submodule is used for sending location measurement request to described the second subscriber equipment, and described location measurement request is used for asking location-based measurement report;
Receive and calculating sub module, be used for receiving the location-based measurement report that described each second subscriber equipment sends, and according to described location-based measurement report edge calculation subscriber equipment.
Select and handover module 26, be used for the base station according to the overall ranking select target residential quarter of each adjacent area, described first user equipment is switched to Target cell.
For device embodiment because itself and embodiment of the method basic simlarity, so describe fairly simple, relevant part gets final product referring to the part explanation of embodiment of the method.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
The application can describe in the general context of the computer executable instructions of being carried out by computer, for example program module.Usually, program module comprises the routine carrying out particular task or realize particular abstract data type, program, object, assembly, data structure etc.Also can in distributed computing environment (DCE), put into practice the application, in these distributed computing environment (DCE), be executed the task by the teleprocessing equipment that is connected by communication network.In distributed computing environment (DCE), program module can be arranged in the local and remote computer-readable storage medium that comprises memory device.
At last, also need to prove, in this article, relational terms such as the first and second grades only is used for an entity or operation are made a distinction with another entity or operation, and not necessarily requires or hint and have the relation of any this reality or sequentially between these entities or the operation.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby not only comprise those key elements so that comprise process, method, commodity or the equipment of a series of key elements, but also comprise other key elements of clearly not listing, or also be included as the intrinsic key element of this process, method, commodity or equipment.Do not having in the situation of more restrictions, the key element that is limited by statement " comprising ... ", and be not precluded within process, method, commodity or the equipment that comprises described key element and also have other identical element.
More than cell switching method and device in a kind of LTE network that the application is provided, be described in detail, used specific case herein the application's principle and execution mode are set forth, the explanation of above embodiment just is used for helping to understand the application's method and core concept thereof; Simultaneously, for one of ordinary skill in the art, the thought according to the application all will change in specific embodiments and applications, and in sum, this description should not be construed as the restriction to the application.
Claims (14)
1. the cell switching method in the LTE network is characterized in that, comprising:
The base station receives the measurement report based on power that first user equipment is uploaded, wherein, each adjacent area that comprises described first user equipment in the described measurement report based on power, and the Reference Signal Received Power of each adjacent area, described adjacent area are the residential quarter adjacent with residential quarter, first user equipment place;
The base station obtains the information on load of each adjacent area of described first user equipment;
Sorting to each adjacent area according to described Reference Signal Received Power and information on load in the base station, determines the overall ranking of each adjacent area;
The base station switches to Target cell according to the overall ranking select target residential quarter of each adjacent area with described first user equipment.
2. method according to claim 1 is characterized in that, described information on load comprises the load capacity of each adjacent area;
Sorting to each adjacent area according to described Reference Signal Received Power and information on load in the base station, determines the rank of each adjacent area, comprising:
The size of each adjacent area according to described Reference Signal Received Power sorted in the base station, obtains the power rank of each adjacent area;
The base station according to how much the sorting of load capacity in the described information on load, obtains the load capacity rank of each adjacent area with each adjacent area;
According to power rank and the load capacity rank of each adjacent area, obtain the overall ranking of described each adjacent area.
3. method according to claim 2 is characterized in that, described power rank and load capacity rank according to each adjacent area are obtained the overall ranking of described each adjacent area, comprising:
Obtain respectively the first weight of described power rank, and the second weight of described load capacity rank;
For each adjacent area, adopt respectively described the first weight that the power rank is weighted, and adopt described the second weight that the load capacity rank is weighted;
With the power rank after the weighting and the load capacity rank addition after the weighting and ordering, obtain the overall ranking of described each adjacent area.
4. method according to claim 1 is characterized in that, described base station obtains before the measurement report based on power that first user equipment uploads, and also comprises:
The load information of the periodic detected cells in base station, wherein, described load information comprises the load capacity of each residential quarter;
When the load capacity that detects the residential quarter when the base station surpasses threshold value, obtain the edge customer equipment that described load capacity surpasses the residential quarter of threshold value, with described edge customer equipment as first user equipment.
5. method according to claim 4 is characterized in that, describedly obtains the edge customer equipment that described load capacity surpasses the residential quarter of threshold value, comprising:
Obtain the second subscriber equipment that described load capacity surpasses the residential quarter of threshold value;
Send location measurement request to described the second subscriber equipment, described location measurement request is used for asking location-based measurement report;
Receive the location-based measurement report that described each second subscriber equipment sends, and according to described location-based measurement report edge calculation subscriber equipment.
6. method according to claim 1 is characterized in that, described base station obtains the information on load of each adjacent area of described first user equipment, comprising:
The base station is measured the adjacent area that belongs to this base station of described first user equipment, obtains the information on load of this adjacent area.
7. method according to claim 1 is characterized in that, described base station obtains the information on load of each adjacent area of described first user equipment, comprising:
The base station at this place, adjacent area is inquired about to the adjacent area that does not belong to this base station of described first user equipment in the base station;
The base station obtains the information on load of this adjacent area to the base station at this place, adjacent area.
8. the residential quarter switching device shifter in the LTE network is characterized in that, comprising:
Receiver module, be used for the base station and receive the measurement report based on power that first user equipment is uploaded, wherein, each adjacent area that comprises described first user equipment in the described measurement report based on power, with the Reference Signal Received Power of each adjacent area, described adjacent area is the residential quarter adjacent with residential quarter, first user equipment place;
Acquisition module is used for the base station and obtains the information on load of each adjacent area of described first user equipment;
Order module is used for the base station according to described Reference Signal Received Power and information on load, is sorted in each adjacent area, obtains the overall ranking of each adjacent area;
Select and handover module, be used for the base station according to the overall ranking select target residential quarter of each adjacent area, described first user equipment is switched to Target cell.
9. device according to claim 8 is characterized in that, described information on load comprises the load capacity of each adjacent area; Described order module comprises:
Power ordering submodule is used for the base station size of each adjacent area according to described Reference Signal Received Power is sorted, and obtains the power rank of each adjacent area;
Load capacity ordering submodule, be used for the base station with each adjacent area according to how much the sorting of described information on load load capacity, obtain the load capacity rank of each adjacent area;
The overall ranking submodule is used for power rank and load capacity rank according to each adjacent area, obtains the overall ranking of described each adjacent area.
10. device according to claim 9 is characterized in that, described overall ranking submodule comprises:
The Weight Acquisition unit, for the first weight of obtaining respectively described power rank, and the second weight of described load capacity rank;
Weighted units is used for for each adjacent area, adopts respectively described the first weight that the power rank is weighted, and adopts described the second weight that the load capacity rank is weighted;
Addition and sequencing unit are used for the overall ranking of described each adjacent area is obtained in the power rank after the weighting and the load capacity rank addition after the weighting and ordering.
11. device according to claim 8 is characterized in that, also comprises:
Detection module, for the load information of the periodic detected cells in base station, wherein, described load information comprises the load capacity of each residential quarter;
The base station requests module is used for obtaining described load capacity above the edge customer equipment of the residential quarter of threshold value when load capacity that the base station detects the residential quarter surpasses threshold value, with described edge customer equipment as first user equipment.
12. device according to claim 11 is characterized in that, described base station requests module comprises:
Obtain submodule, be used for obtaining the second subscriber equipment that described load capacity surpasses the residential quarter of threshold value;
The request submodule is used for sending location measurement request to described the second subscriber equipment, and described location measurement request is used for asking location-based measurement report;
Receive and calculating sub module, be used for receiving the location-based measurement report that described each second subscriber equipment sends, and according to described location-based measurement report edge calculation subscriber equipment.
13. device according to claim 8 is characterized in that, described acquisition module comprises:
First obtains submodule, is used for the base station adjacent area that belongs to this base station of described first user equipment is measured, and obtains the information on load of this adjacent area.
14. device according to claim 8 is characterized in that, described acquisition module comprises:
The inquiry submodule is used for the base station to the adjacent area that does not belong to this base station of described first user equipment, inquires about the base station at this place, adjacent area;
Second obtains submodule, is used for the base station and obtains the information on load of this adjacent area to the base station at this place, adjacent area.
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