Summary of the invention
The embodiment of the invention provides a kind of load balance method, Apparatus and system realized in floored community, to realize the load balancing between the different layers automatically in floored community.
For this reason, the embodiment of the invention provides following technical scheme:
A kind of load balance method that realizes in floored community comprises:
Obtain the load of all sub-districts under each base station of every layer;
According to the load of all sub-districts under each base station of every layer, determine every layer load condition;
If the layer that is in higher load condition is arranged, then the load between the different layers is carried out the load balancing adjustment, and notify the UE in each sub-district to read updated system messages.
A kind of device of realizing load balancing in floored community comprises:
Acquiring unit is used to obtain the load of all sub-districts under each base station of every layer;
The load condition determining unit is used for the load according to all sub-districts under each base station of every layer, determines every layer load condition;
Balanced unit is used for defining the layer that is in higher load condition in described load condition determining unit, and the load between the different layers is carried out the load balancing adjustment;
Notification unit is used for carrying out the load balancing adjustment process at described balanced unit, notifies the UE in each sub-district to read updated system messages.
A kind of system that realizes load balancing in floored community comprises: operational administrative module and a plurality of base station, described a plurality of base stations lay respectively at the identical or different layer of multilayer sub-district;
Described base station is used for according to the notice of described operational administrative module or periodically measures the load of all sub-districts under this base station, and gives described operational administrative module with measurement report;
Described operational administrative module, be used for load according to all sub-districts under each base station of every layer of the report acquisition of each base station, load according to all sub-districts under each base station of every layer, determine every layer load condition, and when the layer that is in higher load condition is arranged, load between the different layers is carried out the load balancing adjustment, after the load balancing adjustment is finished, notify the UE in each sub-district to read updated system messages.
The embodiment of the invention realizes load balance method, Apparatus and system in floored community, in floored community, the frequency deviant of the adaptive adjustment frequency of the information on load that utilizes the base station to report, need not artificial participation, can in floored community, realize the load balancing between the different layers automatically, reduce O﹠M cost.
Embodiment
In order to make those skilled in the art person understand the scheme of the embodiment of the invention better, the embodiment of the invention is described in further detail below in conjunction with drawings and embodiments.
The method of the embodiment of the invention at floored community, is obtained the load of all sub-districts under each base station of every layer; According to the load of all sub-districts under each base station of every layer, determine every layer load condition; If the layer that is in higher load condition is arranged, then the load between the different layers is carried out the load balancing adjustment, and notify the UE in each sub-district to read updated system messages.Like this, when the load of the sub-district of bottom increases, by the frequency deviant of adjusting frequency the certain customers in the underlay cell are transferred in the more high-rise sub-district, thereby reduce the load of this sub-district, reach load balancing between the different layers, improve the capacity of system.
As shown in Figure 1, be the embodiment of the invention realizes load balance method in floored community flow chart, may further comprise the steps:
Step 101 is obtained the load of all sub-districts under each base station of every layer.
In the LTE system, load comprises three key elements: the load of no specific electric load (load on promptly eating dishes without rice or wine), transport network layer, the hardware of node load.Do not have wherein that PRB (Physical Resource Block) that specific electric load is based on every kind of QCI (service quality rating sign) takies to determine.
Can be in hierarchical cellular system the setting operation administration module realize control to load balancing, particularly, each base station of every layer can be added up the load of all sub-districts under this base station periodically, and statistics reported described operational administrative module, like this, the described operational administrative module information that just can report according to each base station of every layer is carried out the control of load balancing; Certainly, each base station of every layer also can be carried out irregular statistics and be reported, and when determining to carry out load balancing such as described operational administrative module, notifies each base station of every layer to carry out the statistics of cell load and report.
Step 102 according to the load of all sub-districts under each base station of every layer, is determined every layer load condition.
Described operational administrative module calculates every layer average cell load according to all results that report, and determines every layer of residing load condition; Particularly, average, obtain the average cell load of this layer for the load of all sub-districts under each base station of every layer; If the average cell load of this layer surpasses the load thresholding of this default layer, determine that then this layer is in the heavy load state; Otherwise determine that this layer is in the normal duty state;
Need to prove that every layer load thresholding can be identical, also can be different.
Step 103 if the layer that is in higher load condition is arranged, is then carried out the load balancing adjustment to the load between the different layers.
Can determine every layer new frequency deviant according to the average cell load of each layer, particularly, the frequency deviant that will be in the affiliated frequency of layer of heavy load state reduces, and the frequency deviant that will be in the affiliated frequency of layer of normal duty state increases.Such as, if bottom is in the heavy load state, then adjust the frequency deviant of this bottom, it is reduced.Then, every layer frequency deviant is adjusted to should the layer new frequency deviant.The frequency deviant increases or the concrete numerical value that reduces can be determined according to emulation or system's actual application environment, and each load balancing adjusts that the intermediate-frequeney point deviant increases or the numerical value that reduces can be identical, also can be different.
Step 104 notifies the UE in each sub-district to read updated system messages.
Particularly, can updated system messages be sent to each base station, notify corresponding UE by the base station again by the operational administrative module.For the UE under the connection status, can notify it to read updated system messages by measuring control messages; For the UE under the idle condition, can notify it to read updated system messages by beep-page message.Comprise every layer the new frequency deviant of determining according to the average cell load of each layer in the described updated system messages.
As seen, the method for the embodiment of the invention, the frequency deviant of the adaptive adjustment frequency of the information on load that utilizes the base station to report need not artificial participation, can realize the load balancing between the different layers in floored community automatically, has reduced O﹠M cost.
In order to adapt to the technical characteristic of following SON (self-organizing network), in the method for the embodiment of the invention, also can further may further comprise the steps:
When the load between the different layers is carried out the load balancing adjustment, start a timer; If behind described timer expiry, described load balancing adjustment remains unfulfilled, and then every layer frequency deviant is returned to the frequency deviant before load balancing is adjusted, and notifies the UE in each sub-district to read updated system messages.
Need to prove, return to the frequency deviant before load balancing is adjusted in each load balancing adjustment or with every layer frequency deviant after, all need to notify the UE in each sub-district to read updated system messages, comprised corresponding new frequency deviant in this system message, UE carries out the sub-district according to this new frequency deviant and switches.In this cell switch process, UE need carry out processing such as the judgement of A3 incident, report, and detailed process is identical with cell switch process of the prior art, does not repeat them here.
Describe the implementation procedure of carrying out load balancing between the different layers in the inventive method in detail below by specific embodiment.
In following examples, suppose that floored community has 2 layers, is called: macrocell layer and microcell level.Detailed process is as follows:
Each base station of every layer is all periodically measured, and obtains the load of all sub-districts under this base station.At up direction, can add the resource utilization of NGBR (non-assurance bit rate) professional PBR (priority bit speed) needs according to GBR (assurance bit rate) service resources utilance, add up up load; And, can add up descending load according to GBR service resources utilance at down direction.The result that each base station will measure reports to the operational administrative module.
The operational administrative module averages every layer sub-district uplink and downlink load, calculates to obtain every layer the average cell load of up-downgoing.When the up or descending average load of certain sub-district layer surpasses the load thresholding UpTh1 or the DownTh1 of this layer, think that this layer of this sub-district is in the heavy load state, otherwise be in normal condition.Every layer load thresholding can be different.Therefore the descending cell load of supposing microcell level this moment determines that greater than microcell level load thresholding MicroDownTh1 microcell level is in the heavy load state.And the information that this moment, the operational administrative module reported according to each base station judges that macrocell layer is in normal condition.
The operational administrative module is carried out the load balancing adjustment to microcell level and macrocell layer.Frequency deviant according to frequency under the microcell level reduces, the principle that the skew of the frequency of frequency increases under the macrocell layer is adjusted, and the information on load that the new frequency deviant of the frequency of microcell level and macrocell layer reports according to microcell level and macrocell layer calculates and obtains.And microcell level and macrocell layer are all notified UE under all connection status by measuring control messages, read updated system messages by the UE under the beep-page message notice idle condition.
Wait for the next arrival constantly of measuring after adjustment finishes, continue the repetition aforementioned process.
Need to prove, one timer can also be set, when the operational administrative module is carried out load balancing and is adjusted microcell level and macrocell layer, start this timer, if the process of described load balancing adjustment remains unfulfilled behind this timer expiry, that is to say, the load of each layer is not adjusted to perfect condition yet, then close this timer, and return to and carry out the state of load balancing before handling, promptly recover microcell level and macrocell layer deviant at the frequency that carries out adopting before the load balancing, and microcell level and macrocell layer are all notified UE under all connection status by measuring control messages, UE by under the beep-page message notice idle condition reads updated system messages.
The operational administrative module is according to the information of each base station report, all be in the heavy load state if judge all layers, show load balancing adjustment failure, at this moment, can be with the deviant full recovery of microcell level and macrocell layer at the frequency that carries out adopting before the load balancing, and microcell level and macrocell layer are all notified UE under all connection status by measuring control messages, read updated system messages by the UE under the beep-page message notice idle condition.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to finish by program, described program can be stored in the computer read/write memory medium, described storage medium, as: ROM/RAM, magnetic disc, CD etc.
The embodiment of the invention also provides a kind of device of realizing load balancing in floored community, as shown in Figure 2, is the structural representation of this device.
In this device, comprise: acquiring unit 201, load condition determining unit 202, balanced unit 203 and notification unit 204.Wherein, acquiring unit 201 is used to obtain the load of all sub-districts under each base station of every layer; Load condition determining unit 202 is used for the load according to all sub-districts under each base station of every layer, determines every layer load condition; Balanced unit 203 is used for defining the layer that is in higher load condition in described load condition determining unit 202, and the load between the different layers is carried out load balancing; Notification unit 204 is used for notifying the UE in each sub-district to read updated system messages after described balanced unit 203 is finished load balancing.Particularly, can read updated system messages, read updated system messages by the UE under the beep-page message notice idle condition by the UE that measures under the control messages notice connection status.Comprise every layer the new frequency deviant of determining according to the average cell load of each layer in the described updated system messages.
In embodiments of the present invention, a kind of preferred structure of described load condition determining unit 202 comprises: computation subunit 221 and judgment sub-unit 222.Wherein, computation subunit 221 is used for averaging for the load of all sub-districts under each base station of every layer, obtains the average cell load of this layer; Judgment sub-unit 222, be used for judging the residing load condition of each layer according to described average cell load, if the average cell load of this layer surpasses the load thresholding of this default layer, determine that then this layer is in the heavy load state, otherwise determine that this layer is in the normal duty state.
In embodiments of the present invention, a kind of preferred structure of described balanced unit 203 comprises: the frequency deviant is determined subelement 231 and is adjusted subelement 232.Wherein:
The frequency deviant is determined subelement 231, be used for determining every layer new frequency deviant according to the average cell load of each layer, particularly, the frequency deviant that is in the affiliated frequency of layer of heavy load state can be reduced, the frequency deviant that will be in the affiliated frequency of layer of normal duty state increases.
Adjust subelement 232, be used for every layer frequency deviant is adjusted to new frequency deviant that should layer.
Certainly, load condition determining unit 202 in the embodiment of the invention and balanced unit 203 are not limited in above-mentioned this structure, also can other version be arranged according to thought of the present invention.
As seen, the device of the embodiment of the invention can be by obtaining the information on load of all sub-districts under each base station of every layer, the frequency deviant of adaptive adjustment frequency, need not artificial participation, can in floored community, realize the load balancing between the different layers automatically, reduced O﹠M cost.
Need to prove, in the device of the embodiment of the invention, also can further comprise: timer 2 05, the load of this timer 2 05 between 203 pairs of different layers of described balanced unit carry out starting when load balancing is adjusted, and close after overtime.Like this, described adjustment subelement 232 also is used for after described timer 2 05 is overtime, if described load balancing adjustment remains unfulfilled, every layer frequency deviant is returned to frequency deviant before load balancing is adjusted.Described notification unit 204 notifies UE to read updated system messages after described adjustment subelement 232 returns to every layer frequency deviant frequency deviant before load balancing is adjusted.Thereby can in the regular hour, finish the adjustment of load balancing according to the requirement of SON,, then abandon adjusting and returning to the state before of adjusting if exceed this time.
The embodiment of the invention also provides a kind of system that realizes load balancing in floored community, as shown in Figure 3, is the structural representation of this system.
Described system comprises: operational administrative module 301 and a plurality of base station, described a plurality of base stations lay respectively at the identical or different layer of multilayer sub-district.Clear in order to illustrate, figure 3 illustrates two base stations 302 and 303 that are positioned at different layers.
In this embodiment, described base station 302 and 303 is used for according to the notice of described operational administrative module 301 or periodically measures the load of all sub-districts under this base station, and gives described operational administrative module 301 with measurement report; Described operational administrative module 301, be used for load according to all sub-districts under each base station of every layer of the report acquisition of each base station, load according to all sub-districts under each base station of every layer, determine every layer load condition, and when the layer that is in higher load condition is arranged, the load between the different layers is carried out load balancing.The structure of described operational administrative module 301 is identical with device shown in Figure 2, is not described in detail at this.
Be in operation, each base station obtains the load of all sub-districts under this base station by measuring.At up direction, can add the resource utilization of the professional PBR needs of NGBR according to GBR service resources utilance, add up up load; And, can add up descending load according to GBR service resources utilance at down direction.The result that each base station will measure reports to operational administrative module 301.
Operational administrative module 301 averages every layer sub-district uplink and downlink load, calculates to obtain every layer the average cell load of up-downgoing.When the up or descending average load of certain sub-district layer surpasses the load thresholding UpTh1 or the DownTh1 of this layer, think that this layer of this sub-district is in the heavy load state, otherwise be in normal condition.Every layer load thresholding can be different.Therefore the descending cell load of supposing base station 302 affiliated layers this moment determines that greater than this layer load thresholding MicroDownTh1 this layer is in the heavy load state.
301 pairs of each layers of operational administrative module carry out load balancing.The frequency deviant that will be in the affiliated frequency of layer of heavy load state reduces, and the frequency deviant of handling the affiliated frequency of layer of normal duty state is increased, and occurrence can obtain according to the information on load calculating that each layer reports.Notify UE under all connection status by measuring control messages then, read updated system messages by the UE under the beep-page message notice idle condition.
As seen, the system of the embodiment of the invention, carry out the load measurement statistics of these all sub-districts, base station by the base station that is positioned at different layers, and statistics reported to the operational administrative module, the information on load of each sub-district that is reported according to the base station by the operational administrative module is adjusted the frequency deviant of frequency adaptively, need not artificial participation, can in floored community, realize the load balancing between the different layers automatically, reduced O﹠M cost.
More than the embodiment of the invention is described in detail, used embodiment herein the present invention set forth, the explanation of above embodiment just is used for help understanding method of the present invention, Apparatus and system; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.