CN101754280A - Multi-carrier load balancing method and device - Google Patents
Multi-carrier load balancing method and device Download PDFInfo
- Publication number
- CN101754280A CN101754280A CN200910265301A CN200910265301A CN101754280A CN 101754280 A CN101754280 A CN 101754280A CN 200910265301 A CN200910265301 A CN 200910265301A CN 200910265301 A CN200910265301 A CN 200910265301A CN 101754280 A CN101754280 A CN 101754280A
- Authority
- CN
- China
- Prior art keywords
- carrier
- underload
- carrier wave
- neighbor cell
- load
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention discloses a multi-carrier load balancing method and a device, relates to the field of wireless communication and is mainly used for solving the problem that the load balancing of a plurality of carriers can not be accurately realized among a plurality of cells in the prior art which carries out judgment according to the overall load situation of the cells. The method comprises the steps of determining light-load carriers of neighbor cells according to the received carrier load information of the neighbor cells when heavy-load carrier exists in the local cell; selecting target carriers from the light-load carriers of the neighbor cells, and the leading the signal quality of the target carriers received by a terminal to meet the lowest service quality requirements of the terminal; and switching the business of the terminal onto the target carriers of the neighbor cells.The embodiment of the invention is mainly applied in a multi-carrier system.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to a kind of load-balancing method and device of multicarrier.
Background technology
In order to utilize Radio Resource fully, avoid to adopt load-balancing technique to realize the load balance of a plurality of carrier waves between a plurality of sub-districts between a plurality of sub-districts usually owing to Radio Resource lacks can't inserting of causing or required service can't be provided.Prior art can be carried out the judgement of load balancing according to sub-district overall load situation usually, and the terminal with the heavy duty sub-district switches on the underloaded neighbor cell then, so that make all terminals all obtain service.
In the multicarrier load balancing process of a plurality of minizones of above-mentioned realization, the inventor finds that there are the following problems when prior art was carried out the judgement of load balancing according to sub-district overall load situation:
In multicarrier system, the total load of sub-district can not reflect the loading condition of each carrier wave in this sub-district really.For example there are two carrier waves sub-district 1, carrier wave CC1 and carrier wave CC2, there are two carrier waves sub-district 2, carrier wave CC3 and carrier wave CC4, from the sub-district on the whole, sub-district 1 loaded cell of attaching most importance to, sub-district 2 is the underload sub-district, but the terminal of sub-district 2 is distributed on the edge carrier wave CC3 more, and just the carrier wave CC3 of sub-district 2 is the heavy duty carrier wave, if allow the terminal of above-mentioned sub-district 1 switch on the sub-district 2 this moment by force, then can cause terminal the phenomenon of call drop to occur.Thereby also just having caused in above-mentioned sub-district 2 is that the terminal of described sub-district 1 can't realize the problem of carrier load balance by transferring to sub-district 2 under the situation of underloaded sub-district.
Summary of the invention
Embodiments of the invention provide a kind of load-balancing method and device of multicarrier, according in the sub-district separately the loading condition of carrier wave realize multicarrier load balancing between the sub-district.
For achieving the above object, embodiments of the invention adopt following technical scheme:
A kind of load-balancing method of multicarrier comprises:
When there is the heavy duty carrier wave in current area, determine the underload carrier wave of neighbor cell according to the neighbor cell carrier load information that receives;
The signal quality that select target carrier wave from the underload carrier wave of described neighbor cell, described terminal receive described target carrier satisfies the minimum quality of service requirement of described terminal;
The business of described terminal is switched on the target carrier of described neighbor cell.
A kind of load balancing device of multicarrier comprises:
Determining unit when being used for current area and having the heavy duty carrier wave, is determined the underload carrier wave of neighbor cell according to the neighbor cell carrier load information that receives;
Selected cell, select target carrier wave from the underload carrier wave of described neighbor cell, the signal quality that described terminal receives described target carrier satisfies the minimum quality of service requirement of described terminal;
Switch unit is used for the business of described terminal is switched to the target carrier of described neighbor cell.
The load-balancing method of the multicarrier that the embodiment of the invention provides, when there is the heavy duty carrier wave in current area, by determine the underload carrier wave of neighbor cell according to the neighbor cell carrier load information that receives, can obtain each carrier load situation of neighbor cell accurately, same neighbor cell also can detect the carrier load situation of current area from all the carrier load information of current area that receive, with in the prior art alternately sub-district overall load situation compare, the embodiment of the invention can be between current area and neighbor cell the loading condition of mutual each carrier wave separately.When in detecting neighbor cell, having the underload carrier wave, select target carrier wave from the underload carrier wave of described neighbor cell, the condition that satisfy to shift between described terminal and the described target carrier is: the signal quality that described terminal receives described target carrier satisfies the minimum quality of service requirement of described terminal.The business that can guarantee described terminal is like this transferred to after the described target carrier, and the service quality of described terminal can not be affected.Then described terminal is switched on the target carrier of described neighbor cell, realized the carrier load balance of current area and neighbor cell.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the flow chart of the load-balancing method of multicarrier in the embodiment of the invention 1;
Fig. 2 is the structured flowchart of the load balancing device of multicarrier in the embodiment of the invention 1;
Fig. 3 is the flow chart of the load-balancing method of multicarrier in the embodiment of the invention 2;
Fig. 4 is the flow chart of the load-balancing method of multicarrier in the embodiment of the invention 2;
Fig. 5 is the structured flowchart of the load balancing device of multicarrier in the embodiment of the invention 2;
Fig. 6 is the structured flowchart of the load balancing device of multicarrier in the embodiment of the invention 2.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Embodiment 1:
The embodiment of the invention provides a kind of load-balancing method of multicarrier, and as shown in Figure 1, this method may further comprise the steps:
When 101, there is the heavy duty carrier wave in current area, determine the underload carrier wave of neighbor cell according to the neighbor cell carrier load information that receives.Each sub-district all can send all carrier load situations of this sub-district all neighbor cells to it, whether there is the underload carrier wave by detecting neighbor cell, can obtain each carrier load situation of neighbor cell accurately, same neighbor cell also can detect the carrier load situation of current area, with in the prior art alternately sub-district overall load situation compare can be between current area and the neighbor cell mutual loading condition of carrier wave separately of the embodiment of the invention.In the time of can avoiding in the prior art judging, can't reflect the real load situation of each carrier wave in the sub-district accurately, thereby cause to realize the problem of minizone load balancing according to the overall carrier load situation in sub-district.
102, select target carrier wave from the underload carrier wave of described neighbor cell.The signal quality that described terminal receives described target carrier satisfies the minimum quality of service requirement of described terminal.SINR (Signal to Interference plus Noise Ratio, the Signal to Interference plus Noise Ratio) signal of the target carrier that receives of terminal satisfies the lowest service requirement of described terminal as described.
Described terminal be for can transferring to the terminal of described target carrier, and satisfied condition is exactly the minimum quality of service requirement that the described terminal signal quality that receives described target carrier satisfies described terminal between this terminal and the described target carrier.So just can guarantee when described terminal after the heavy duty carrier wave of current area is transferred on the described target carrier, the service quality of described terminal still can be guaranteed.As: when the calling of current terminal is in state of activation, with the calling that has activated of described terminal after the heavy duty carrier wave of current area is transferred on the target carrier of described neighbor cell, still can keep the call state that activates, the phenomenon of call drop can not take place.
103, the business with described terminal switches on the target carrier of described neighbor cell.At this moment, described terminal is switched on the target carrier of described neighbor cell to whole business of described terminal are transferred on the target carrier of described neighbor cell, perhaps also the partial service of described terminal can be transferred on the target carrier of described neighbor cell.
By judging each carrier load situation in the neighbor cell, from the underload carrier wave, determine then to carry out the target carrier that terminal shifts, guaranteed the reliability that terminal shifts like this between carrier wave, when having avoided in the prior art judging according to the overall carrier load in sub-district, when neighbor cell is the underload sub-district, but because the edge carrier wave is a heavy duty carrier wave and the terminal of current area can't be transferred to the problem of described neighbor cell.Said method is in implementation procedure, a plurality of sub-districts can be by detecting a plurality of carrier load situations of neighbor cell separately, thereby make between a plurality of sub-districts can be alternately separately carrier load situation, realized multicarrier load balancing between a plurality of sub-districts according to the loading condition of each carrier wave of each sub-district then.
The embodiment of the invention also provides a kind of load balancing device of multicarrier, can realize the load-balancing method of above-mentioned multicarrier by this device.As shown in Figure 2, this device comprises: determining unit 21, selected cell 22 and switch unit 23.
Wherein, when determining unit 21 is used for current area and has the heavy duty carrier wave, determine the underload carrier wave of neighbor cell according to the neighbor cell carrier load information that receives.Described current area can send to all carrier waves loading condition separately of this sub-district its all neighbor cells, with in the prior art alternately sub-district overall load situation compare, the embodiment of the invention can be between current area and neighbor cell the loading condition of mutual each carrier wave separately.Determine by above-mentioned determining unit 21 whether neighbor cell exists the underload carrier wave, can obtain each carrier load situation of neighbor cell accurately, and detect underload carrier waves all in the neighbor cell.Selected cell 22 is used for the underload carrier wave select target carrier wave from described neighbor cell then, and the signal quality that described terminal receives described target carrier satisfies the minimum quality of service requirement of described terminal.So just can guarantee when described terminal after the heavy duty carrier wave of current area is transferred on the described target carrier, the service quality of described terminal still can be guaranteed.Switch unit 23 is used for the business of described terminal is switched to the target carrier of described neighbor cell.By with the partial service of described terminal or all business switch on the target carrier of described neighbor cell, realized the load balancing of the underload carrier wave of the heavy duty carrier wave of current area and neighbor cell.
Embodiment 2:
The embodiment of the invention provides a kind of load-balancing method of multicarrier, and described sub-district includes a plurality of carrier waves, and as shown in Figure 3, this method may further comprise the steps:
When 301, the carrier wave of certain in determining current area CC1 is the heavy duty carrier wave, at first detects described current area and whether have the underload carrier wave.When there is the underload carrier wave in current area, can realize a plurality of carrier load balances in the sub-district by all or part of business of the terminal that can shift on the heavy duty carrier wave being transferred to underload carrier wave in this sub-district.
Current area also can send to all the carrier load information in this sub-district the neighbor cell of this sub-district, same current area also can receive the carrier load information of its neighbor cell transmission, just each sub-district all can send to all carrier waves loading condition separately of this sub-district its all neighbor cells, with in the prior art alternately sub-district overall load situation compare, the embodiment of the invention can be between current area and neighbor cell the loading condition of mutual each carrier wave separately.The loading condition of described each carrier wave can be the resource operating position of each carrier wave, comprises descending and operating position ascending resource.For example: in 3GPP REL-8 and later version thereof, in 3GPP LTE REL-10 agreement, the load operating position of each carrier wave comprises: the Physical Resource Block operating position of the descending guarantee bit rate business of each carrier wave: expression GBR (Guaranteed Bit Rate, guarantee bit rate) professional descending to PRB (Physical ResourceBlock, Physical Resource Block) the situation that takies, can represent with percentage, or with the absolute value representation of the PRB number that takies.
The Physical Resource Block operating position of the up assurance bit rate business of each carrier wave: expression GBR business is in the up situation that takies to PRB.Can represent with percentage, or with the absolute value representation of the PRB number that takies.
The Physical Resource Block of the descending non-assurance bit rate business of each carrier wave uses: expression non-GBR business is in the descending situation that takies to PRB.Can represent with percentage, or with the absolute value representation of the PRB number that takies.
The Physical Resource Block operating position of the up non-assurance bit rate business of each carrier wave: expression non-GBR business is in the up situation that takies to PRB.Can represent with percentage, or with the absolute value representation of the PRB number that takies.
The downlink physical Resource Block of each carrier wave uses sum: represent that all service bearers and signaling bear are in the descending situation that takies to PRB.Can represent with percentage, or with the absolute value representation of the PRB number that takies.
The ascending physical signal Resource Block of each carrier wave uses sum: represent that all service bearers and signaling bear are in the up situation that takies to PRB.Can represent with percentage, or with the absolute value representation of the PRB number that takies.
When whether the carrier wave that detects described current area is the underload carrier wave, can realize: suppose to use by following manner
, the composition carrier set of expression current area a, K
aFor the maximum of current area a is formed carrier number, the carrier wave f of current area a
i aLoad L
i aExpression.Wherein, L
i aCan be current area a carrier wave f
i aThe estimated value of total load, also may be the set of operating position of the various resources of carrier wave, for example
, wherein, l
I, DL-GBR aExpression current area a carrier wave f
i aThe Physical Resource Block operating position of descending guarantee bit rate business, l
I, UL-GBR aExpression current area a carrier wave f
i aThe Physical Resource Block operating position of up assurance bit rate business, l
I, DL-NGBR aExpression current area a carrier wave f
i aThe Physical Resource Block operating position of descending non-assurance bit rate business, l
I, UL-NGBR aExpression current area a carrier wave f
i aThe Physical Resource Block operating position of up non-assurance bit rate business, l
I, DL-T aExpression current area a carrier wave f
i aDescending total Physical Resource Block operating position, l
I, UL-T aExpression sub-district a carrier wave f
i aUp total Physical Resource Block operating position.
Simultaneously, suppose L
ThBe the carrier load thresholding, when carrier load surpasses described carrier load thresholding, think that this carrier wave is the heavy duty carrier wave.L
ThCan comprise a plurality of elements, for example comprise the heavy duty thresholding, the underload thresholding, intermediate part load thresholdings etc. perhaps have different load decision thresholds at upstream or downstream, perhaps at the different load decision threshold of having of different business, repeat no more here.
Satisfied when detecting
The carrier wave of condition the time, describedly satisfy
The carrier wave of condition correspondence be the underload carrier wave.It will be understood by those skilled in the art that the method for judging the underload carrier wave can have other multiple realization means, as the load of more a plurality of carrier waves, therefrom select the lightest one or more carrier waves of load etc., present embodiment no longer launches this.
When in current area, detecting in this step, go to step 304 and judge whether to exist the underload neighbor cell less than the underload carrier wave.
302, select the target carrier all or part of business of the terminal on the heavy duty carrier wave of described current area can be shifted from the underload carrier wave of described detected current area, the signal quality that described terminal receives described target carrier satisfies the minimum quality of service requirement of described terminal.
When judging that minimum quality of service that whether signal quality that described terminal receives described target carrier satisfies described terminal requires, can judge by expression terminal minimum quality of service requirement signal quality thresholding is set, use γ
ThExpression terminal minimum quality of service requires the signal quality thresholding, uses γ
i aThe expression terminal receives current area a carrier wave f
i aSignal quality, satisfy condition so
Terminal be the terminal that can transfer on the described target carrier, the signal quality that just described terminal receives described target carrier satisfies the minimum quality of service requirement of described terminal.
When in the underload carrier wave of described detected current area, not having the target carrier that the terminal on the heavy duty carrier wave of described current area can be shifted in this step, go to step 304 and judge whether to exist the underload neighbor cell.
303, the business of described terminal is transferred on the target carrier of described current area.Described terminal can be transferred to partial service on the target carrier of described current area, also whole business of described terminal can be transferred on the target carrier of described current area.Shift the Data-carrying speed that some or all of business depends on that the underload carrier wave can provide for terminal and the data rate of terminal requirements.If the underload carrier wave can be greater than or equal to the data rate of terminal requirements for the Data-carrying speed that terminal provides, then whole business of terminal are transferred to target underload carrier wave from the heavy duty carrier wave, otherwise, then the partial service of terminal is transferred to target underload carrier wave.
304, detect whether there is underloaded neighbor cell.Described detected underload neighbor cell can be for a plurality of.
Carrier load information according to each neighbor cell that receives detects in each underload neighbor cell whether have the underload carrier wave successively from described detected underload neighbor cell.When judging the underload carrier wave of described neighbor cell, the carrier wave f among the described neighbor cell b
j bLoad satisfy
Be the underload carrier wave during condition.This deterministic process judges whether to exist the process of underload carrier wave identical in current area with above-mentioned.
305, judge in the underload carrier wave of one of them described neighbor cell whether have target carrier.When exist can be with described heavy duty carrier wave on the business of terminal shift target carrier the time, the signal quality of selecting the target carrier business of terminal on the described heavy duty carrier wave can be shifted, described terminal to receive described target carrier from the underload carrier wave of one of them described neighbor cell satisfies the minimum quality of service requirement of described terminal.So just can guarantee that the service quality of described terminal still can be guaranteed when described terminal is transferred on the target carrier of described neighbor cell from the heavy duty carrier wave of current area after.
In order to better meet the business need of described terminal, can judge further that signal quality in the described neighbor cell satisfies the service rate requirement whether total amount of data that all underload carrier waves of terminal minimum quality of service requirement can carry satisfies described terminal.As: can judge for the maximum channel capacity that terminal provides by all underload carrier waves that signal quality in the neighbor cell as described in calculating satisfies the requirement of terminal minimum quality of service, suppose W
j bCarrier wave f for sub-district b
j bThe maximum bandwidth that can be provided for terminal u, SINR
j B, uReceive the carrier wave f of sub-district b for terminal u
j bThe signal noise interference ratio of signal can be by calculating all underload carrier waves
Summation judge, can guarantee the needed service rate of described terminal like this.
When having a plurality of neighbor cell, from the underload carrier wave of one of them described neighbor cell, do not find the target carrier that the terminal on the described heavy duty carrier wave shifts, will in next neighbor cell, search target carrier again, all judge up to the carrier wave of all neighbor cells.
306, the business with described terminal switches on the target carrier of described neighbor cell.
Such scheme is in implementation procedure, if it is overweight to detect in the current area certain carrier load, at first judge whether and the terminal that satisfies jump condition on this heavy duty carrier wave can be transferred on the underload carrier wave of this sub-district, if of course, the underload carrier wave of then partial service or whole business of this part terminal being transferred to this sub-district.If all business on the above-mentioned heavy duty carrier wave all cannot be transferred to the underload carrier wave of this sub-district, perhaps after partial service shifts, the load of carrier wave is still very heavy, then further judge whether the part terminal to be transferred to neighbor cell underload carrier wave, if have the terminal that can shift and can carry the neighbours' underload carrier wave that shifts terminal, then this part terminal is transferred to neighbours' underload carrier wave.The judgement that switches to before this sub-district underload carrier wave in above-mentioned this sub-district or switch to before the neighbor cell underload carrier wave all is to decide according to the actual loading situation of each carrier wave, thereby can be implemented in the load balancing of a plurality of carrier waves between a plurality of sub-districts exactly.
Further, in the implementation procedure of said method, can also carry out local optimum.If do not exist in the underload carrier wave as detected current area as described in the step 302 of above-mentioned method can with as described in terminal on the heavy duty carrier wave of current area shift target carrier the time, just can in this sub-district, find the underload carrier wave, can satisfy the target carrier that this terminal minimum quality of service requires for the signal that terminal provides but but can not find, can satisfy under the situation of certain condition so, for example neighbor cell is not caused under the situation of interference, suitably increase the coverage of certain candidate's underload carrier wave, for example increase the transmitting power of candidate's underload carrier wave, perhaps adjust the antenna parameter of candidate's underload carrier wave etc., to promote the signal quality that terminal receives above-mentioned candidate's underload carrier wave, make these candidate's underload carrier waves increase after a certain amount of power, just can become described target carrier, the signal quality that just makes described terminal receive described target carrier satisfies the minimum quality of service requirement of described terminal.Can realize by following concrete steps.
302A: judge in the underload carrier wave of described current area whether have the candidate carrier that can increase transmitting power.When judging whether to have the candidate carrier that can increase transmitting power, can judge by whether satisfying following condition:
1. the current transmit power of described candidate carrier is less than the maximum transmission power of described candidate carrier.
2. increase after the transmitting power of described candidate carrier interference to neighbor cell in preset range.This condition specifically can be judged in the following manner.Judge receive neighbor cell at the load indicator value of this candidate carrier whether less than specific value.The possible value of described Load indicator has LowLoad, Medium Load, High Load and Overload, wherein a kind of implementation method is if loadindicator is no more than Medium load, thinks that then the transmitting power of this candidate carrier of increase is enough little to the interference of neighbor cell.If Load indicator show this candidate carrier to the interference of neighbor cell greater than Medium load, then do not increase the transmitting power of this candidate carrier.If perhaps the UL high interference at this candidate carrier that receives from neighbor cell reaches certain value, then do not increase the transmitting power of this candidate carrier.
3. after the current transmit power of described candidate carrier was increased to the maximum transmission power of described candidate carrier, the signal quality that the candidate carrier of described terminal after described increase transmitting power receives satisfied the minimum quality of service requirement of described terminal.Can judge by following manner:
, γ wherein
i aReceive the carrier wave f of sub-district a for terminal
i aThe signal quality of signal, if with SINR as signal quality judgement standard, then γ
i aReceive the carrier wave f of sub-district b for terminal
i aThe SINR of signal, P
Max, i aCarrier wave f for sub-district a
i aMaximum transmission power.
When satisfying above-mentioned three conditions simultaneously, think that then this load carrier wave can increase transmitting power.
302B: determine existence can increase the candidate carrier of transmitting power the time, increase the transmitting power of described candidate carrier with the certain power recruitment.Increase transmitting power and can adopt the fixed step size method, the specific transmitting power of promptly each increase for example increases 3dB at every turn.Can also realize by variable stepsize method.In order to satisfy the lowest signal qualities requirement of the terminal that can carry out load transfer, need the power Δ P of candidate carrier increase by direct prediction
j a, direct then power ascension Δ P with above-mentioned candidate carrier
j aThe minimum received signal power of supposing to satisfy the service of terminal is R, and the current transmit power of the above-mentioned candidate carrier of current area a is P
j a, then
, wherein, PL
j aDescribed candidate carrier f for current area a
j aPath loss to above-mentioned terminal.
Candidate carrier after the described increase transmitting power is the target carrier that all or part of business of the terminal on the heavy duty carrier wave of described current area can be shifted.
If 302A determines when not having the candidate carrier that can increase transmitting power in the underload carrier wave of described current area, then go to step 304 and continue to detect whether have the underload neighbor cell.
If when in step 305, not having the target carrier that the terminal on the heavy duty carrier wave of described current area can be shifted in the underload carrier wave of described detected neighbor cell equally, also can make this candidate carrier become above-mentioned target carrier by the candidate carrier that increase satisfies condition.Specifically realize by following steps:
305A: judge in the underload carrier wave of described neighbor cell whether have the candidate carrier that can increase transmitting power.When judging whether to have the candidate carrier that can increase transmitting power, can judge by whether satisfying following condition:
1. the current transmit power of described candidate carrier is less than the maximum transmission power of described candidate carrier.
2. increase after the transmitting power of described candidate carrier interference to neighbor cell in preset range.The concrete deterministic process of this condition is with the deterministic process among the above-mentioned 302A.
3. after the current transmit power of described candidate carrier was increased to the maximum transmission power of described candidate carrier, the signal quality that the candidate carrier of described terminal after described increase transmitting power receives satisfied the minimum quality of service requirement of described terminal.The concrete deterministic process of this condition is with the deterministic process among the above-mentioned 302A.
When described candidate carrier need satisfy above-mentioned three conditions simultaneously, also need to satisfy following condition in addition:
4. after candidate carrier increases transmitting power, can satisfy the service rate requirement of above-mentioned terminal, that is:
, wherein, R
uBe the service rate requirement of terminal u, f
j bBe composition carrier set C at neighbor cell b
bIn, all signal qualitys that provide satisfy candidate's underload carrier wave that above-mentioned terminal minimum quality of service requires,
, wherein, W
j bCarrier wave f for neighbor cell b
j bThe maximum bandwidth that can be provided for terminal u, SINR
j B, uReceive the carrier wave f of sub-district b for terminal u
j bThe signal noise interference ratio of signal.
When satisfying above-mentioned four conditions simultaneously, think that then this load carrier wave can increase transmitting power.
When having a plurality of neighbor cell, from the underload carrier wave of one of them described neighbor cell, do not find the candidate carrier that can increase power, will in next neighbor cell, search the candidate carrier that can increase power again, all judge up to the carrier wave of all neighbor cells.
305B: determine existence can increase the candidate carrier of transmitting power the time, increase the transmitting power of described candidate carrier with the certain power recruitment.The method of described increase power is with step 302B.
Candidate carrier after the described increase transmitting power is the target carrier that the terminal on the heavy duty carrier wave of described neighbor cell can be shifted.
If 305A determines when not having the candidate carrier that can increase transmitting power in the underload carrier wave of described current area, then this method operation that leaves it at that.
In addition, if the load of the candidate carrier after the above-mentioned increase transmitting power lightens, can also reduce the transmitting power of described candidate carrier, when not having load on the described candidate carrier, also can close described underloaded candidate carrier, thereby reduce power consumption and the interference of neighbor cell.
Above-mentioned carry out after the local optimum the complete method flow chart as shown in Figure 4.
The embodiment of the invention also provides a kind of load balancing device of multicarrier, and as shown in Figure 5, this device comprises: determining unit 51, selected cell 52, switch unit 53.
Wherein, determining unit when being used for current area and having the heavy duty carrier wave, is determined the underload carrier wave of neighbor cell according to the neighbor cell carrier load information that receives.
Described determining unit 51 comprises: detection module 54, shift module 55, determination module 56.
When wherein detection module 54 is used for described current area and has the heavy duty carrier wave, detect described current area and whether have the underload carrier wave.Whether detect described current area by detection module 54 exists the underload carrier wave can obtain the concrete loading condition of each carrier wave.Shift module 55 is used for when there is the underload carrier wave in described current area then, the signal quality of selecting the target carrier terminal on the heavy duty carrier wave of described current area can be shifted, described terminal to receive described target carrier from the underload carrier wave of described detected current area satisfies the minimum quality of service requirement of described terminal.So just can guarantee that the signal that this terminal receives after described terminal switches to target carrier still can satisfy its minimum quality of service requirement.Described then shift module 55 is transferred to the business of described terminal on the target carrier of described current area, whole business of described terminal can be transferred on the target carrier of described current area, perhaps the partial service of described terminal be transferred on the target carrier of described current area.Thereby can realize the load balancing between a plurality of carrier waves in this sub-district.Determination module 56 is used for not having the underload carrier wave when described current area, determines the underload carrier wave of neighbor cell according to the neighbor cell carrier load information that receives.
Described determination module 56 comprises: judge submodule 57 and definite submodule 58.
When detection module 54 detects less than the underload carrier wave, judge that submodule 57 is used for judging whether to exist the underload neighbor cell when there is not the underload carrier wave in described current area in current area.Judge that perhaps submodule 57 also is used for judging whether to exist the underload neighbor cell when there is not target carrier in the underload carrier wave of described detected underload neighbor cell.Described definite submodule 58 is used for when having the underload neighbor cell, receives described neighbor cell carrier load information, determines the underload carrier wave of neighbor cell according to the neighbor cell carrier load information that receives.When the load balancing of carrier wave can not be realized in this sub-district, can be implemented in the load balance of realizing multicarrier between current area and the neighbor cell by the underload carrier wave that detects in the neighbor cell.
This device can also comprise: judging unit 59 and transmitter unit 510, thus can realize optimizing the function of said apparatus.Structure drawing of device after being optimized as shown in Figure 6.
If judging unit 59 determines when not having the candidate carrier that can increase transmitting power in the underload carrier wave of described neighbor cell, then this device is with end operation.
Equally, when shift module 55 during in the target carrier that the business of selecting from the described underload carrier wave that detects current area the terminal on the heavy duty carrier wave of described current area shifts, if do not have target carrier in the underload carrier wave of described detected current area, judging unit 59 is used for also judging whether the underload carrier wave of described current area exists the candidate carrier that can increase transmitting power so.When transmitter unit 510 also is used to determine existence and can increases the candidate carrier of transmitting power, increase the transmitting power of described candidate carrier with default power recruitment.
If judging unit 59 determines when not having the candidate carrier that can increase transmitting power in the underload carrier wave of described current area, then by judging submodule 57 continues to detect whether have the underload neighbor cell.
Present embodiment is by at first judging whether and the business of the terminal that satisfies jump condition on this heavy duty carrier wave can being transferred on the underload carrier wave of this sub-district, if of course, the underload carrier wave of then partial service or whole business of this part terminal being transferred to this sub-district.If all business on the above-mentioned heavy duty carrier wave all cannot be transferred to the underload carrier wave of this sub-district, perhaps after partial service shifts, the load of carrier wave is still very heavy, judge each carrier load situation in the neighbor cell then, from the underload carrier wave, determine then to carry out the target carrier that terminal shifts, guaranteed the reliability that terminal shifts like this between carrier wave, when having avoided in the prior art judging according to the overall carrier load in sub-district, when neighbor cell is the underload sub-district, but because the edge carrier wave is a heavy duty carrier wave and the terminal of current area can't be transferred to the problem of described neighbor cell.Said method is in implementation procedure, a plurality of sub-districts can be by detecting a plurality of carrier load situations of neighbor cell separately, thereby make between a plurality of sub-districts can be alternately separately carrier load situation, realized multicarrier load balancing between a plurality of sub-districts according to the loading condition of each carrier wave of each sub-district then.
The embodiment of the invention can be applied in the multicarrier system, has realized the multicarrier load balancing between a plurality of sub-districts.
Through the above description of the embodiments, the those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential common hardware, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium that can read, floppy disk as computer, hard disk or CD etc., comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of described claim.
Claims (11)
1. the load-balancing method of a multicarrier is characterized in that, comprising:
When there is the heavy duty carrier wave in current area, determine the underload carrier wave of neighbor cell according to the neighbor cell carrier load information that receives;
The signal quality that select target carrier wave from the underload carrier wave of described neighbor cell, described terminal receive described target carrier satisfies the minimum quality of service requirement of described terminal;
The business of described terminal is switched on the target carrier of described neighbor cell.
2. the load-balancing method of multicarrier according to claim 1 is characterized in that, the neighbor cell carrier load information that described basis receives determines that the underload carrier wave of neighbor cell comprises:
Detect described current area and whether have the underload carrier wave;
When there is the underload carrier wave in described current area, select target carrier wave from the underload carrier wave of described detected current area, the signal quality that described terminal receives described target carrier satisfies the minimum quality of service requirement of described terminal, the business of described terminal is transferred on the target carrier of described current area;
When there is not the underload carrier wave in described current area, determine the underload carrier wave of neighbor cell according to the neighbor cell carrier load information that receives.
3. the load-balancing method of multicarrier according to claim 2 is characterized in that, the neighbor cell carrier load information that described basis receives determines that the underload carrier wave of neighbor cell comprises:
Judge whether to exist the underload neighbor cell;
When having the underload neighbor cell, receive described neighbor cell carrier load information, determine the underload carrier wave of neighbor cell according to the neighbor cell carrier load information that receives.
4. the load-balancing method of multicarrier according to claim 1, it is characterized in that signal quality satisfies the service rate requirement that total amount of data that the part or all of underload carrier wave of terminal minimum quality of service requirement can carry satisfies described terminal in the described neighbor cell.
5. the load-balancing method of multicarrier according to claim 2 is characterized in that, also comprises:
When not having target carrier in the described underload carrier wave that detects neighbor cell, judge in the underload carrier wave of described neighbor cell and whether have the candidate carrier that can increase transmitting power, when existence in the underload carrier wave of described neighbor cell can increase the candidate carrier of transmitting power, increase the transmitting power of described candidate carrier to preset the power recruitment, perhaps
When not having target carrier in the described underload carrier wave that detects current area, judge in the underload carrier wave of described current area and whether have the candidate carrier that can increase transmitting power, when existence in the underload carrier wave of described current area can increase the candidate carrier of transmitting power, increase the transmitting power of described candidate carrier with default power recruitment;
With the candidate carrier after the described increase transmitting power as target carrier.
6. the load-balancing method of multicarrier according to claim 5 is characterized in that, described candidate carrier satisfies following condition:
The current transmit power of described candidate carrier is less than the maximum transmission power of described candidate carrier, and
Increase described candidate carrier after the transmitting power to the interference of neighbor cell in preset range, and
After the current transmit power of described candidate carrier was increased to the maximum transmission power of described candidate carrier, the signal quality that the candidate carrier of described terminal after described increase transmitting power receives satisfied the minimum quality of service requirement of described terminal.
7. the load-balancing method of multicarrier according to claim 6 is characterized in that,
After the current transmit power of all candidate carrier was increased to the maximum transmission power of described target underload carrier wave in the described neighbor cell, the total amount of data that part or all of candidate carrier can be carried in the described neighbor cell satisfied the service rate requirement of described terminal.
8. the load balancing device of a multicarrier is characterized in that, comprising:
Determining unit when being used for current area and having the heavy duty carrier wave, is determined the underload carrier wave of neighbor cell according to the neighbor cell carrier load information that receives;
Selected cell is used for the underload carrier wave select target carrier wave from described neighbor cell, and the signal quality that described terminal receives described target carrier satisfies the minimum quality of service requirement of described terminal;
Switch unit is used for the business of described terminal is switched to the target carrier of described neighbor cell.
9. the load balancing device of multicarrier according to claim 8 is characterized in that, described determining unit comprises:
Detection module when being used for described current area and having the heavy duty carrier wave, detects described current area and whether has the underload carrier wave;
Shift module, be used for when there is the underload carrier wave in described current area, select target carrier wave from the underload carrier wave of described detected current area, the signal quality that described terminal receives described target carrier satisfies the minimum quality of service requirement of described terminal, the business of described terminal is transferred on the target carrier of described current area;
Determination module is used for not having the underload carrier wave when described current area, determines the underload carrier wave of neighbor cell according to the neighbor cell carrier load information that receives.
10. the load balancing device of multicarrier according to claim 9 is characterized in that, described determination module comprises:
Judge submodule, be used to judge whether to exist the underload neighbor cell;
Determine submodule, be used for when having the underload neighbor cell, receive described neighbor cell carrier load information, determine the underload carrier wave of neighbor cell according to the neighbor cell carrier load information that receives.
11. the load balancing device of multicarrier according to claim 8 is characterized in that, also comprises:
Judging unit, when being used for the described underload carrier wave that detects neighbor cell and not having target carrier, judge in the underload carrier wave of described neighbor cell and whether have the candidate carrier that can increase transmitting power, when perhaps also being used for the described underload carrier wave that detects current area and not having target carrier, judge in the underload carrier wave of described current area whether have the candidate carrier that can increase transmitting power;
Transmitter unit, the underload carrier wave existence of described neighbor cell is used for when can increase the candidate carrier of transmitting power, increase the transmitting power of described candidate carrier with default power recruitment, perhaps also be used for when the underload carrier wave existence of described current area can increase the candidate carrier of transmitting power, increasing the transmitting power of described candidate carrier with default power recruitment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910265301A CN101754280A (en) | 2009-12-28 | 2009-12-28 | Multi-carrier load balancing method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910265301A CN101754280A (en) | 2009-12-28 | 2009-12-28 | Multi-carrier load balancing method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101754280A true CN101754280A (en) | 2010-06-23 |
Family
ID=42480489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910265301A Pending CN101754280A (en) | 2009-12-28 | 2009-12-28 | Multi-carrier load balancing method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101754280A (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102209351A (en) * | 2011-05-20 | 2011-10-05 | 中兴通讯股份有限公司 | Method, device and system for distributing multi-carrier forward data |
| CN102572950A (en) * | 2010-12-30 | 2012-07-11 | 中国移动通信集团设计院有限公司 | Method, device and system for cell reselection |
| CN102625373A (en) * | 2012-02-22 | 2012-08-01 | 中兴通讯股份有限公司 | Intelligent carrier management method and intelligent carrier management device |
| CN102695210A (en) * | 2011-03-24 | 2012-09-26 | 中国电信股份有限公司 | Method and system for reverse load control of multi-carrier BE service |
| CN102870459A (en) * | 2012-06-29 | 2013-01-09 | 华为技术有限公司 | Load control method and apparatus. |
| CN103650558A (en) * | 2012-05-11 | 2014-03-19 | 华为技术有限公司 | Carrier selection method and device |
| CN103906132A (en) * | 2012-12-25 | 2014-07-02 | 普天信息技术研究院有限公司 | Carrier wave load control method |
| CN104066120A (en) * | 2014-06-13 | 2014-09-24 | 北京邮电大学 | LTE satellite communication system traveling load balancing method |
| CN110234130A (en) * | 2014-07-16 | 2019-09-13 | 思科技术公司 | Neighbours plan between technology between frequency on self-organizing network |
| CN110312271A (en) * | 2014-08-06 | 2019-10-08 | 思科技术公司 | Neighbours plan between technology between frequency on self-organizing network |
| WO2019242000A1 (en) * | 2018-06-22 | 2019-12-26 | 华为技术有限公司 | Method and device for load balancing |
| CN111263410A (en) * | 2018-12-28 | 2020-06-09 | 维沃移动通信有限公司 | Resource reservation method and equipment |
| CN111787060A (en) * | 2020-05-28 | 2020-10-16 | 网宿科技股份有限公司 | Traffic scheduling method, system and device |
| CN111818574A (en) * | 2020-05-22 | 2020-10-23 | 福建北峰通信科技股份有限公司 | Carrier self-adaptive balanced seamless switching method and mobile communication terminal |
| WO2022188140A1 (en) * | 2021-03-12 | 2022-09-15 | 华为技术有限公司 | Processing method for carrier, and baseband unit and storage medium |
-
2009
- 2009-12-28 CN CN200910265301A patent/CN101754280A/en active Pending
Cited By (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102572950A (en) * | 2010-12-30 | 2012-07-11 | 中国移动通信集团设计院有限公司 | Method, device and system for cell reselection |
| CN102572950B (en) * | 2010-12-30 | 2016-03-30 | 中国移动通信集团设计院有限公司 | Residence reselecting, device and system |
| CN102695210B (en) * | 2011-03-24 | 2014-12-17 | 中国电信股份有限公司 | Method and system for reverse load control of multi-carrier BE service |
| CN102695210A (en) * | 2011-03-24 | 2012-09-26 | 中国电信股份有限公司 | Method and system for reverse load control of multi-carrier BE service |
| WO2012159396A1 (en) * | 2011-05-20 | 2012-11-29 | 中兴通讯股份有限公司 | Multi-carrier forward data distributing method, device and system |
| CN102209351A (en) * | 2011-05-20 | 2011-10-05 | 中兴通讯股份有限公司 | Method, device and system for distributing multi-carrier forward data |
| CN102209351B (en) * | 2011-05-20 | 2016-07-06 | 中兴通讯股份有限公司 | Multi-carrier forward data distribution method, device and system |
| CN102625373A (en) * | 2012-02-22 | 2012-08-01 | 中兴通讯股份有限公司 | Intelligent carrier management method and intelligent carrier management device |
| WO2013123729A1 (en) * | 2012-02-22 | 2013-08-29 | 中兴通讯股份有限公司 | Smart carrier management method and device |
| US9510241B2 (en) | 2012-05-11 | 2016-11-29 | Huawei Technologies Co., Ltd. | Carrier selection method and apparatus |
| CN103650558B (en) * | 2012-05-11 | 2017-10-17 | 华为技术有限公司 | Carrier selecting method and device |
| CN103650558A (en) * | 2012-05-11 | 2014-03-19 | 华为技术有限公司 | Carrier selection method and device |
| CN102870459B (en) * | 2012-06-29 | 2015-05-06 | 华为技术有限公司 | Load control method and apparatus |
| CN102870459A (en) * | 2012-06-29 | 2013-01-09 | 华为技术有限公司 | Load control method and apparatus. |
| CN103906132A (en) * | 2012-12-25 | 2014-07-02 | 普天信息技术研究院有限公司 | Carrier wave load control method |
| CN103906132B (en) * | 2012-12-25 | 2017-10-10 | 普天信息技术研究院有限公司 | A kind of control method of carrier load |
| CN104066120A (en) * | 2014-06-13 | 2014-09-24 | 北京邮电大学 | LTE satellite communication system traveling load balancing method |
| CN110234130A (en) * | 2014-07-16 | 2019-09-13 | 思科技术公司 | Neighbours plan between technology between frequency on self-organizing network |
| CN110234130B (en) * | 2014-07-16 | 2023-04-07 | 思科技术公司 | Inter-frequency and inter-technology neighbor planning on ad hoc networks |
| CN110312271A (en) * | 2014-08-06 | 2019-10-08 | 思科技术公司 | Neighbours plan between technology between frequency on self-organizing network |
| CN110312271B (en) * | 2014-08-06 | 2023-06-23 | 思科技术公司 | Inter-frequency and inter-technology neighbor planning on an ad hoc network |
| US11405825B2 (en) | 2018-06-22 | 2022-08-02 | Huawei Technologies Co., Ltd. | Load balancing method and device |
| WO2019242000A1 (en) * | 2018-06-22 | 2019-12-26 | 华为技术有限公司 | Method and device for load balancing |
| CN111263410A (en) * | 2018-12-28 | 2020-06-09 | 维沃移动通信有限公司 | Resource reservation method and equipment |
| CN111263410B (en) * | 2018-12-28 | 2022-07-08 | 维沃移动通信有限公司 | Resource reservation method and equipment |
| US11838803B2 (en) | 2018-12-28 | 2023-12-05 | Vivo Mobile Communication Co., Ltd. | Resource reserving method and device |
| CN111818574B (en) * | 2020-05-22 | 2023-03-24 | 福建北峰通信科技股份有限公司 | Carrier self-adaptive balanced seamless switching method and mobile communication terminal |
| CN111818574A (en) * | 2020-05-22 | 2020-10-23 | 福建北峰通信科技股份有限公司 | Carrier self-adaptive balanced seamless switching method and mobile communication terminal |
| CN111787060A (en) * | 2020-05-28 | 2020-10-16 | 网宿科技股份有限公司 | Traffic scheduling method, system and device |
| WO2022188140A1 (en) * | 2021-03-12 | 2022-09-15 | 华为技术有限公司 | Processing method for carrier, and baseband unit and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101754280A (en) | Multi-carrier load balancing method and device | |
| US11133902B2 (en) | Scheduling data transmissions between a mobile terminal and a base station in a wireless communications network using component carriers | |
| JP5161315B2 (en) | Opportunistic uplink scheduling | |
| US8909273B2 (en) | Wireless communication system, wireless communication method, terminal apparatus, and communication apparatus | |
| KR101555718B1 (en) | Method and apparatus for power saving in wireless communication node b | |
| US8565153B2 (en) | Dynamic switching between MIMO and DC HSDPA | |
| CN102378325B (en) | The up link of the secondary community of terminal is activated and the method for deexcitation and device | |
| US20120115468A1 (en) | Technique for anchor carrier selection in a telecommunication system | |
| CN106912081B (en) | Method, apparatus and system for cell selection in a wireless system | |
| CN202014371U (en) | Mobile communication device and system of load balancing management | |
| EP2941044A1 (en) | Load balancing method and network control node | |
| CN101925082B (en) | Method, system and equipment for determining and monitoring main carrier and indicating and activating carrier | |
| CN101932024A (en) | Downlink control information transmitting method and device | |
| CN103220717A (en) | Load balancing method and related device | |
| EP2210444A1 (en) | Opportunistic uplink scheduling | |
| US20160044514A1 (en) | Dual connectivity of user equipment to macro and small cell in long term evolution system | |
| CN103828422A (en) | Method for balancing load and network control node | |
| CN101808410B (en) | Resource management method, equipment and system | |
| CN105208602A (en) | Load balancing method and device | |
| KR20110111808A (en) | Multiple carrier communication system and method for adaptively selecting carrier and reporting link quality therein | |
| CN101669387A (en) | Carrier switching in a multi-carrier wireless communication network | |
| US9609570B2 (en) | Method and network node for handling handover | |
| CN104486826A (en) | Communication method of secondary cells of activated terminals and deactivated terminals and electronic device | |
| EP3764681B1 (en) | Wireless communication control method, wireless communication system, and management server | |
| RU2529553C1 (en) | Radio interface reconfiguration |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20100623 |