CN102300306B - Power control method, device and system - Google Patents
Power control method, device and system Download PDFInfo
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- CN102300306B CN102300306B CN201010215914.1A CN201010215914A CN102300306B CN 102300306 B CN102300306 B CN 102300306B CN 201010215914 A CN201010215914 A CN 201010215914A CN 102300306 B CN102300306 B CN 102300306B
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Abstract
The embodiment of the invention discloses a power control method, device and system. The method comprises the following steps that: a base station subjected to interference obtains the interference information reported by user equipment in the cell; the base station subjected to interference determines a controlled base station needing power control according to the interference information; and the base station subjected to interference sends the power control command to the controlled base station. The method, the device and the system have the following advantages: the coverage performances and the data rates of the layered networks can be improved; and the method, the device and the system are also suitable for the single layer networks.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of Poewr control method, device and system.
Background technology
Along with the raising that the growing and business load of data rate requires, traditional macro base station individual layer covering of passing through provides the method for access can not meet user's demand.Adopt layered coverage, in hot zones or the lower powered base station of indoor deployment, for example, Home eNodeB (Home eNodeB), Pico (focus covers micro-station) and Relay (relaying) etc., can address the above problem well.Lower powered base station is a kind of base station equipment being applied under family's indoor environment, working environment or the little overlay environment of other focuses, can make operator provide high data rate more, more cheaply, attractive business.
Existing LTE (Long Term Evolution, Long Term Evolution) in standard, descending use power distributing technique, specify PDSCH (Physical Downlink Shared Channel, Physical Downlink Shared Channel), PMCH (Physical Multicast Channel, Physical Multicast Channel) RE (Resource Element, resource particle) concrete ratio relation between power and reference symbol power, but there is no the concrete regulation power allocation scheme of details more.At ICIC (Inter-Cell Interference Coordination, Inter-Cell Interference Coordination) downlink transfer in, can adopt RNTP (Relative Narrowband Tx Power, arrowband transmitted power instruction relatively) parameter instruction transmitting power, avoid in advance contingent interference problems of too.In the process of specific implementation, can indicate according to RNTP, user's PRB (Physical Resource Block, Physical Resource Block) priority is set by dispatch interface, also can reduce by power control interface the operation of resource power.
In existing method for controlling downlink power, can use switch or the reporting of user of cell reselection to the metrical information of Home eNodeB (HeNB) macrocell, for example, RSRP (Reference Signal Receiving Power, Reference Signal Received Power) and RSRQ (Reference Signal Receiving Quality, Reference Signal Received Quality) etc., Home eNodeB judges that this user is switched or cell reselection is due to the signal difference of former Serving cell or because the interference of oneself causes greatly, then makes corresponding adjustment.Said method uses macrocell reporting of user measured value, can multiplexing existing switching flow, in the time sending handover request, notify Home eNodeB by information.
In addition, existing method for controlling downlink power can also arrange HeNB transmitting power by open loop power control.Particularly, can HeNB transmitting power be set by following formula:
Ptx＝max(min(α·PM+β，Pmax)，Pmin)[dBm]
Wherein, Ptx is the HeNB transmitting power calculating, and Pmax/Pmin is maximum/minimum emissive power of HeNB, and PM is the received power of the macro station (MeNB) that records, and α and β adjust parameter.
In the time that user's disturbed value and the measuring amount (as RSRP and RSRQ etc.) of channel quality are carried out power control, need certain reporting of user mechanism to support.In current R8LTE system, measurement event comprises A1, A2, A3, A4 and A5 event, and wherein, A1 event is: the absolute thresholding of measuring amount > of Serving cell; A2 event is: the absolute thresholding of measuring amount < of Serving cell; A3 event is: adjacent cell measurement amount+offset > Serving cell measuring amount (offset can on the occasion of or negative value); A4 event is: the absolute thresholding of measuring amount > of adjacent cell; A5 event is: the measuring amount < thresholding 1 of Serving cell, and the measuring amount > thresholding 2 of adjacent cell.
Inventor is realizing in process of the present invention, and at least there are the following problems to find prior art:
For CSG (Close Subscriber Group, closed user group), as shown in Figure 1, UE1 belongs to macro station, and Home eNodeB only can authorization of service CSG user, because UE2 is CSG user, so can authenticate access to family base station.In the time that UE1 is positioned at the coverage of Home eNodeB, because UE1 is not the CSG user who authorizes, even if Home eNodeB signal strength signal intensity is far away higher than the signal strength signal intensity of macro station, UE1 also cannot be switched to Home eNodeB and will be subject to the strong jamming from Home eNodeB, likely cause the non-constant of channel condition of UE1, produce call drop, or even cannot work.
For OSG (Open Subscriber Group, development of user group), in the time that the skew of community switching individual character skew or interlayer is set, even if occur that the signal strength signal intensity of adjacent area is far above the situation of existing Serving cell signal strength signal intensity, user also possibly cannot be switched to Qiang community, also can bring thus corresponding covering problem.
Summary of the invention
The embodiment of the present invention provides a kind of Poewr control method, device and system, for improving covering performance and the data rate of hierarchical network.
The embodiment of the present invention proposes a kind of Poewr control method, comprises the following steps:
Be disturbed the interfere information that base station obtains local area user equipment to report;
The controlled base station that need to carry out power control is determined in the described base station that is disturbed according to described interfere information;
The described base station that is disturbed is to described controlled base-station transmitting-power control command.
Preferably, in described power control command, carry power decreasing information;
The described base station that is disturbed, to before described controlled base-station transmitting-power control command, also comprises:
The power decreasing information that described controlled base station is corresponding is determined according to described interfere information in the described base station that is disturbed.
Preferably, described power decreasing information comprises power adjustment step-length;
The power decreasing information that described controlled base station is corresponding is determined according to described interfere information in the described base station that is disturbed, and comprising:
The described base station that is disturbed, according to the target signal to noise ratio of setting and the local area channel quality information of described local area user equipment to report, obtains and disturbs total amount minimizing value;
The described base station that is disturbed is that described controlled base station assigns power is adjusted step-length according to described interference total amount minimizing value.
Preferably, described in be disturbed base station according to described interfere information determine need to carry out the controlled base station of power control before, also comprise:
The described base station that is disturbed determines that according to described interfere information described local area subscriber equipment is disturbed by adjacent area.
Preferably, described in be disturbed base station according to described interfere information determine need to carry out power control controlled base station, comprising:
Described controlled base station is determined according at least one in following judgment condition in the described base station that is disturbed:
Local area signal to noise ratio is less than the first threshold value;
Local area signal strength signal intensity is greater than the second threshold value, and neighboring area signal intensity is higher than local area signal strength signal intensity;
Adjacent area is disturbed and is greater than the 3rd threshold value.
Preferably, described in be disturbed base station after described controlled base-station transmitting-power control command, also comprise:
Described controlled base station judges whether to carry out power control, if judged result is no, sends refusal power control information to the described base station that is disturbed; Otherwise, carry out power adjustment according to described power control command, and send power control feedback information to the described base station that is disturbed.
Preferably, described controlled base station is disturbed after base station sends power control feedback information to described, also comprises:
The described base station that is disturbed judges whether to continue described controlled base station to carry out power control according to the power control feedback information receiving, if judged result is yes, to described controlled base-station transmitting-power control command; Otherwise, process ends.
Preferably, described interfere information comprises adjacent area interfere information and local area channel quality information.
The embodiment of the present invention also proposes a kind of base station, comprising:
Acquisition module, for obtaining the interfere information of local area user equipment to report;
Judging module, for determining the controlled base station that need to carry out power control according to described interfere information;
Sending module, for to described controlled base-station transmitting-power control command.
Preferably, in described power control command, carry power decreasing information;
Described judging module, also for determining the power decreasing information that described controlled base station is corresponding according to described interfere information.
Preferably, described power decreasing information comprises power adjustment step-length;
Described judging module, for according to the target signal to noise ratio of setting and the local area channel quality information of described local area user equipment to report, obtains and disturbs total amount minimizing value; Be that described controlled base station assigns power is adjusted step-length according to described interference total amount minimizing value.
Preferably, described judging module, also for determining that according to described interfere information described local area subscriber equipment is disturbed by adjacent area.
Preferably, described judging module, specifically for determining described controlled base station according at least one in following judgment condition:
Local area signal to noise ratio is less than the first threshold value;
Local area signal strength signal intensity is greater than the second threshold value, and neighboring area signal intensity is higher than local area signal strength signal intensity;
Adjacent area is disturbed and is greater than the 3rd threshold value.
Preferably, described acquisition module, also for receiving the power control feedback information from described controlled base station;
Described judging module, also continues described controlled base station to carry out power control for judging whether according to described power control feedback information;
Described sending module, also in the judged result of described judging module when being, to described controlled base-station transmitting-power control command.
The embodiment of the present invention also proposes a kind of power control system, comprising:
Be disturbed base station, for obtaining the interfere information of local area user equipment to report, according to described interfere information determine need to carry out power control controlled base station, and described in be disturbed base station to described controlled base-station transmitting-power control command;
Controlled base station, for receiving the power control command that is disturbed base station from described, carries out power adjustment according to described power control command.
The technical scheme of the embodiment of the present invention has the following advantages, propose a kind of Poewr control method, can effectively improve in hierarchical network, the interference problem of low power base station to adjacent cell user, thereby improve covering performance and the data rate of hierarchical network, and be equally applicable to single layer network.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is CSG scene schematic diagram of the prior art;
Fig. 2 is a kind of Poewr control method flow chart in the embodiment of the present invention;
Fig. 3 is a kind of architecture of base station schematic diagram in the embodiment of the present invention;
Fig. 4 is a kind of power control system structural representation in the embodiment of the present invention.
Embodiment
In the technical scheme of the embodiment of the present invention, be disturbed the interfere information that base station obtains local area user equipment to report, determine the controlled base station that need to carry out power control according to this interfere information, and to controlled base-station transmitting-power control command, can solve descending covering problem, and can be applicable to the downlink power control of same layer network.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 2, be a kind of Poewr control method flow chart in the embodiment of the present invention, comprise the following steps:
Step 201, is disturbed base station and obtains the interfere information of local area user equipment to report.
Wherein, being disturbed base station can be macro base station, and interfere information can comprise adjacent area interfere information and local area channel quality information, as disturbed RSRP, local area RSRP and RSRQ in adjacent area.For meeting power demand for control, can also allocating and measuring reported event.
Particularly, can configure A2 event+A3 reporting events, when user receive local area signal excessively a little less than, or adjacent area disturbs and adds skew when exceeding local area signal, triggers to measure reporting.For example, base station side is in order to obtain adjacent area interference value and local area channel quality, and high level configures A2 event, lag parameter Hys_A2 and triggers thresholding Thresh_A2; For frequency range individual character skew Ofs, the Serving cell individual character skew Ocs of power control block configuration A3 event, Serving cell, frequency range individual character skew Ofn, adjacent cell individual character skew Ocn, event offset parameter O_eventA3 and the event lag parameter Hys_A3 of adjacent cell; In order to guarantee to trigger A2 event and A3 reporting events, the individual character deviant of threshold value, event offset value and each Serving cell can be set as lower than handover measurement requirement.User measures local area signal Ms and adjacent cell interference strength Mn, if meet Ms+Hys_A2 < Thresh_A2, triggers A2 event, reports RSRP and the RSRQ of local area, and the RSRP of adjacent area; If meet Mn+Ofn+Ocn and Hys_A3 > Ms+Ofs+Ocs+O_eventA3, trigger A3 event, report RSRP and the RSRQ of local area, and the RSRP of adjacent area.
Can also configure A4 reporting events, in the time that user receives that adjacent area interference signal exceedes certain thresholding, trigger to measure reporting.For example, base station side is in order to obtain adjacent area interference value and local area channel quality, and high-rise configuration A4 event and the threshold T hre_A4 requiring lower than handover measurement, even if adjacent area is disturbed when not being very large, also can trigger A4 reporting events; The frequency range individual character skew Ofn of configuration adjacent cell, adjacent cell individual character skew Ocn, event lag parameter Hys.User measures the interference strength Mn of adjacent cell, if Mn+Ofn+Ocn > is Thre_A4, triggers and enters A4 event, reports RSRP and the RSRQ of local area, and the RSRP of adjacent area.
Can also configure A5 reporting events.When user receive local area signal excessively a little less than, and the interference signal of adjacent area is when exceeding certain thresholding, triggers to measure reporting.For example, base station side is in order to obtain adjacent area interference value and local area channel quality, high-rise configuration A5 event, lag parameter Hys, the frequency range individual character skew Ofn of adjacent cell, adjacent cell individual character skew Ocn, larger threshold T hresh1 and less threshold T hresh2, it is not very little making local area signal and disturb when not being very large adjacent area, can trigger A5 reporting events yet.User measures local area signal Ms and adjacent cell interference strength Mn, if when meeting Ms+Hys < Thresh1 and meet Mn+Ofn+Ocn > Thresh2, triggering enters A5 event, reports local area RSRP and RSRQ, and the RSRP of adjacent area.
Step 202, is disturbed base station and determines that according to interfere information local area subscriber equipment is disturbed by adjacent area.
Particularly, after being disturbed reporting neighboring cell that base station receives local area user and disturbing, analyze and judge that this interference is due to due to a little less than the signal of service link, or due to disturbing greatly by adjacent area; If the former, the signal strength signal intensity of enhancement service link; If the latter continues to carry out subsequent step.
Step 203, is disturbed base station and determines power decreasing information corresponding to controlled base station and controlled base station that need to carry out power control according to interfere information.
Particularly, be disturbed the community ID that base station can be carried according to default rule and measured value, analyze this community user is carried out to strongly disturbing adjacent cell, the adjacent cell base station of judgement transmission power control commands, and calculate corresponding power decreasing information.
Wherein, controlled base station can be the low power base station such as Home eNodeB.Be disturbed base station and can determine controlled base station according at least one in following judgment condition: local area signal to noise ratio is less than the first threshold value; Local area signal strength signal intensity is greater than the second threshold value, and neighboring area signal intensity is higher than local area signal strength signal intensity; Adjacent area is disturbed and is greater than the 3rd threshold value.
Power decreasing information can comprise power adjustment step-length; Being disturbed base station can be according to the target signal to noise ratio of setting and the local area channel quality information of local area user equipment to report, obtains and disturbs total amount minimizing value, and be that controlled base station assigns power is adjusted step-length according to disturbing total amount minimizing value.Be disturbed base station also can select power corresponding to controlled base station to adjust step-length from alternative granularity set.
Step 204, is disturbed base station to controlled base-station transmitting-power control command.
Particularly, be greater than controlled base-station transmitting-power control command corresponding to zero, Ze Xianggai community if need to carry out the community number of power control.Wherein, in power control command, can carry power decreasing information.
Step 205, power adjustment is carried out according to the power control command receiving in controlled base station, and sends power control feedback information to being disturbed base station.
Particularly, controlled base station receives after power control command, can judge whether to carry out power control, if judged result is no, does not carry out corresponding power control action, and to being disturbed base station feedback refusal power control information; If the determination result is YES, carry out power decreasing according to power control command.Optionally, controlled base station can also be adjusted result according to power and send power control feedback information to being disturbed base station.
Step 206, is disturbed base station and judges whether to continue controlled base station to carry out power control according to the power control feedback information receiving.If so, perform step 204; Otherwise, process ends.
If power decreasing cannot be carried out in controlled base station, be disturbed base station and can controlled base station cannot carry out the judgement number of times of power control and count.For example, be a counter of controlled base station configuration, and counting thresholding Npc, after receiving continuously a refusal power control information, this counter is added to 1; If receive power control feedback information, by counter zero setting.If continuous several times refusal in controlled base station carries out power control, counter reaches counting thresholding Npc, this controlled base station is removed from controlled set of cells to counter O reset; Meanwhile, opening timing device configurator timing window, in the time that timer timing is within time window, do not trigger the power control to controlled base station; In the time of timer timing overtime window, this controlled base station is added to controlled set of cells, and by timer zero setting.
In addition, be disturbed base station and receive after the interference of reporting of user adjacent area, can continue execution analysis judging process, until close control function of power.
In step 203, be disturbed base station and determine that the decision rule of controlled base station can include but not limited to: local area signal to noise ratio is less than certain threshold value; Local area signal is greater than certain threshold value, and neighboring area signal is higher than local area signal; Adjacent area is disturbed and is greater than certain threshold value.
When decision rule is local area signal to noise ratio while being less than certain threshold value, can suppose to be disturbed base station and use M the interference source area interference information RSRP (j) obtaining
i=1,2 ..., Mwith local area channel quality information RSRP (j)
belongand RSRQ (j), judgement need to be carried out the adjacent interferer set of cells of power control, and decision rule is as shown in following false code:
For?j＝1to?N
If?RSRQ(j)＜Thresh_minSINR
For?i＝1to?M
If?RSRP(j)
i＞Thresh_I
RSRP (j)
icorresponding adjacent cell adds S set (j)
End
End
End
End
Wherein, j is that adjacent cell is disturbed corresponding user label; I is the label of adjacent cell; Thresh_minSINR is the thresholding that judgement local area user is edge customer, can configure by demand; Thresh_I is that the corresponding adjacent cell of judgement is the thresholding of strong jamming community; S (j) causes strongly disturbing adjacent cell set to user j.
When decision rule is that local area signal is greater than certain threshold value, and neighboring area signal is during higher than local area signal, can suppose to be disturbed base station and use M the interference source area interference information RSRP (j) obtaining
i=1,2 ..., Mwith local area channel quality information RSRP (j)
belongand RSRQ (j), judgement need to be carried out the adjacent interferer set of cells of power control, shown in the following false code of decision rule:
For?j＝1to?N
If?RSRP(j)
belong＞Thresh_minRSRP
For?i＝1to?M
If?RSRP(j)
i＞Thresh_I
RSRP (j)
icorresponding adjacent cell adds S set (j)
End
End
End
End
Wherein, j is that adjacent cell is disturbed corresponding user label; I is the label of adjacent cell; Thresh_minSINR is the thresholding that judgement local area user is edge customer, can configure by demand; Thresh_I is that the corresponding adjacent cell of judgement is the thresholding of strong jamming community; S (j) causes strongly disturbing adjacent cell set to user j.
When decision rule is that disturb while being greater than certain threshold value adjacent area, can suppose to be disturbed cell base station and use M the interference source area interference information RSRP (j) obtaining
i=1,2 ..., Mwith local area channel quality information RSRP (j)
belongand RSRQ (j), judgement need to be carried out the adjacent interferer set of cells of power control, shown in the following false code of decision rule:
For?j＝1to?N
For?i＝1to?M
If?RSRP(j)
i＞Thresh_I
RSRP (j)
icorresponding adjacent cell adds S set (j)
End
End
End
Wherein, j is that adjacent cell is disturbed corresponding user label; I is the label of adjacent cell; Thresh_minSINR is the thresholding that judgement local area user is edge customer, can configure by demand; Thresh_I is that the corresponding adjacent cell of judgement is the thresholding of strong jamming community; S (j) causes strongly disturbing adjacent cell set to user j.
In addition, being disturbed base station calculates while carrying out the power decreasing information of controlled base station of power control, can adopt rapid adjustment mode, calculating principle can comprise: first set a target signal to noise ratio SINR_obj (j), represent to finish and be disturbed user after power control and expect the signal to noise ratio reaching; The value ∑ Δ that disturbs total amount to reduce when calculating reaches target signal to noise ratio according to the RSRQ of current reporting of user (j)
k; Make the base station adjustment total amount in controlled adjacent cell set equal ∑ Δ
k, according to local area user's interference strength is directly proportional, for each controlled cell allocation power is adjusted step delta
k; If there are the multiple user's of being disturbed measurements to report, be disturbed base station and obtain multiple power adjustment step-lengths, can choose multiple power and adjust the one in maximum, mean value or the minimum value in step-lengths.
For example, macro base station calculates user j is caused to strongly disturbing femtocell neighbor cell S set (j), has K community, for the each Home eNodeB k in set, can adjust step-length according to following formula rated output.
Wherein, Δ
kfor k adjacent cell Home eNodeB in S set (j) lowered power step size; RSRP (j)
belongfor local area user's Serving cell received power; RSRQ (j) is local area user's Serving cell signal to noise ratio; SINR_obj (j) carries out the target signal to noise ratio after power control for local area user in adjacent area, can configure according to demand; RSRP (j)
krepresent k adjacent cell Home eNodeB in S set (j) interference value to local area user.
In addition, be disturbed base station and calculate while carrying out the power decreasing information of controlled base station of power control, also can adopt slow-action perfect square formula.Macro base station judgement is calculated after the adjacent area Home eNodeB set of required power control, can among alternative granularity set, select each base station power fall the set of controlled adjacent area, and selection result is included in the merit control command sending to adjacent cell in set.In slow-action perfect square formula, when base station side is determined the power fall of each enforcement power control adjacent area, use the fixed step size that optionally differs in size, make adjacent area progressively adjust transmitting power to stable value.
In step 204, controlled base station judges whether to carry out the decision rule of power control can be including but not limited to: local area user snr of received signal considers that power can not be lower than certain thresholding after adjusting; Local area user received signal intensity considers that power can not be lower than certain thresholding after adjusting.
Particularly, controlled base station receives after the power control command of adjacent cell transmission, the power decreasing step-length in RSRQ and the power control command that can report according to local area edge customer, and whether judgement carries out power control commands, shown in following false code:
If?RSRQ-Δ
k＜Thres_min
Return?False；
Else
Return?Ture；
End
Wherein, RSRQ is the Serving cell channel quality of local area reporting of user, can adopt the auxiliary power control of UE to measure report method and obtain, or obtain from user's handover request reports; Δ
kfor the power decreasing step-length in power control commands information; Thres_min is the signal to noise ratio minimum threshold that power is adjusted community, can from power control commands information, pass and come, and also can specify voluntarily by local area.
Receive after the power control command of adjacent cell transmission controlled base station, the power decreasing step-length in RSRP and the power control command that also can report according to local area edge customer, and whether judgement carries out power control commands.Shown in following false code:
If?RSRP-Δ
k＜Thres_min
Return?False；
Else
Return?Ture；
End
Wherein, RSRP is the Serving cell signal strength signal intensity of local area reporting of user, can adopt the auxiliary power control of UE to measure report method and obtain, or obtain from user's handover request reports; Δ
kfor the power decreasing step-length in power control commands information; Thres_min is the signal to noise ratio minimum threshold that power is adjusted community, can from power control commands information, pass and come, and also can specify voluntarily by local area.
The technical scheme of the embodiment of the present invention has the following advantages, propose a kind of Poewr control method, can effectively improve in hierarchical network, the interference problem of low power base station to adjacent cell user, thereby improve covering performance and the data rate of hierarchical network, and be equally applicable to single layer network.
As shown in Figure 3, be a kind of architecture of base station schematic diagram in the embodiment of the present invention, comprising:
Acquisition module 310, for obtaining the interfere information of local area user equipment to report.
Judging module 320, for determining the controlled base station that need to carry out power control according to interfere information.
Particularly, above-mentioned judging module 320, specifically for determining described controlled base station according at least one in following judgment condition:
Local area signal to noise ratio is less than the first threshold value;
Local area signal strength signal intensity is greater than the second threshold value, and neighboring area signal intensity is higher than local area signal strength signal intensity;
Adjacent area is disturbed and is greater than the 3rd threshold value.
Sending module 330, for to controlled base-station transmitting-power control command.
Wherein, in power control command, can carry power decreasing information; Above-mentioned judging module 320, also the power decreasing information for determining that according to interfere information controlled base station is corresponding.
Above-mentioned power decreasing information can comprise power adjustment step-length; Above-mentioned judging module 320, for according to the target signal to noise ratio of setting and the local area channel quality information of local area user equipment to report, obtains and disturbs total amount minimizing value; Be that controlled base station assigns power is adjusted step-length according to this interference total amount minimizing value.Above-mentioned judging module 320, also for determining that according to described interfere information described local area subscriber equipment is disturbed by adjacent area.
Above-mentioned acquisition module 310, also for receiving the power control feedback information from controlled base station; Correspondingly, above-mentioned judging module 320, also continues described controlled base station to carry out power control for judging whether according to power control feedback information; Above-mentioned sending module 330, also in the judged result of judging module 320 when being, to controlled base-station transmitting-power control command.
The technical scheme of the embodiment of the present invention has the following advantages, propose a kind of Poewr control method, can effectively improve in hierarchical network, the interference problem of low power base station to adjacent cell user, thereby improve covering performance and the data rate of hierarchical network, and be equally applicable to single layer network.
As shown in Figure 4, be a kind of power control system structural representation in the embodiment of the present invention, comprising:
Be disturbed base station 410, for obtaining the interfere information of local area user equipment to report, determine the controlled base station 420 that need to carry out power control according to this interfere information, and to controlled base station 420 transmission power control commands.
Controlled base station 420, for receiving from the power control command that is disturbed base station 410, carries out power adjustment according to power control command.
The technical scheme of the embodiment of the present invention has the following advantages, propose a kind of Poewr control method, can effectively improve in hierarchical network, the interference problem of low power base station to adjacent cell user, thereby improve covering performance and the data rate of hierarchical network, and be equally applicable to single layer network.
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that the present invention can add essential general hardware platform by software and realize, and can certainly pass through hardware, but in a lot of situation, the former is better execution mode.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 a storage medium, comprise that some instructions (can be mobile phones in order to make a station terminal equipment, personal computer, server, or the network equipment etc.) carry out the method described in each embodiment of the present invention.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be looked protection scope of the present invention.
It will be appreciated by those skilled in the art that the module in the device in embodiment can be distributed in the device of embodiment according to embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from the present embodiment.The module of above-described embodiment can be integrated in one, and also can separate deployment, can merge into a module, also can further split into multiple submodules.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
Disclosed is above only several specific embodiment of the present invention, and still, the present invention is not limited thereto, and the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.
Claims (14)
1. a Poewr control method, is characterized in that, comprises the following steps:
Be disturbed the interfere information that base station obtains local area user equipment to report;
The controlled base station that need to carry out power control is determined in the described base station that is disturbed according to described interfere information;
The described base station that is disturbed is to described controlled base-station transmitting-power control command;
Described controlled base station judges whether to carry out power control, if judged result is no, sends refusal power control information to the described base station that is disturbed; Otherwise, carry out power adjustment according to described power control command, and send power control feedback information to the described base station that is disturbed;
Wherein, described in to be disturbed base station be a counter of controlled base station configuration, and counting thresholding, after receiving continuously a refusal power control information, adds 1 to this counter; In the time receiving power control feedback information, by counter zero setting; In the time that counter reaches counting thresholding, this controlled base station is removed from controlled set of cells to counter O reset;
Described base station opening timing device the configurator timing window of being disturbed, in the time that timer timing is within time window, does not trigger the power control to controlled base station; In the time of timer timing overtime window, this controlled base station is added to controlled set of cells, and by timer zero setting.
2. the method for claim 1, is characterized in that, carries power decreasing information in described power control command;
The described base station that is disturbed, to before described controlled base-station transmitting-power control command, also comprises:
The power decreasing information that described controlled base station is corresponding is determined according to described interfere information in the described base station that is disturbed.
3. method as claimed in claim 2, is characterized in that, described power decreasing information comprises power adjustment step-length;
The power decreasing information that described controlled base station is corresponding is determined according to described interfere information in the described base station that is disturbed, and comprising:
The described base station that is disturbed, according to the target signal to noise ratio of setting and the local area channel quality information of described local area user equipment to report, obtains and disturbs total amount minimizing value;
The described base station that is disturbed is that described controlled base station assigns power is adjusted step-length according to described interference total amount minimizing value.
4. the method for claim 1, is characterized in that, described in be disturbed base station according to described interfere information determine need to carry out the controlled base station of power control before, also comprise:
The described base station that is disturbed determines that according to described interfere information described local area subscriber equipment is disturbed by adjacent area.
5. the method for claim 1, is characterized in that, described in be disturbed base station according to described interfere information determine need to carry out power control controlled base station, comprising:
Described controlled base station is determined according at least one in following judgment condition in the described base station that is disturbed:
Local area signal to noise ratio is less than the first threshold value;
Local area signal strength signal intensity is greater than the second threshold value, and neighboring area signal intensity is higher than local area signal strength signal intensity;
Adjacent area is disturbed and is greater than the 3rd threshold value.
6. the method for claim 1, is characterized in that, described controlled base station is disturbed after base station sends power control feedback information to described, also comprises:
The described base station that is disturbed judges whether to continue described controlled base station to carry out power control according to the power control feedback information receiving, if judged result is yes, to described controlled base-station transmitting-power control command; Otherwise, process ends.
7. the method as described in claim 1 to 6 any one, is characterized in that, described interfere information comprises adjacent area interfere information and local area channel quality information.
8. a base station, is characterized in that, comprising:
Acquisition module, for obtaining the interfere information of local area user equipment to report;
Judging module, for determining the controlled base station that need to carry out power control according to described interfere information;
Sending module, be used for to described controlled base-station transmitting-power control command, so that described controlled base station judges whether to carry out power control, and send refusal power control information while being no to described base station when judged result, and when judged result is when being, carry out power adjustment according to described power control command, and send power control feedback information to described base station;
Wherein, described base station is a counter of controlled base station configuration, and counting thresholding, after receiving continuously a refusal power control information, this counter is added to 1; In the time receiving power control feedback information, by counter zero setting; In the time that counter reaches counting thresholding, this controlled base station is removed from controlled set of cells to counter O reset;
Described base station opening timing device configurator timing window, in the time that timer timing is within time window, do not trigger the power control to controlled base station; In the time of timer timing overtime window, this controlled base station is added to controlled set of cells, and by timer zero setting.
9. base station as claimed in claim 8, is characterized in that, carries power decreasing information in described power control command;
Described judging module, also for determining the power decreasing information that described controlled base station is corresponding according to described interfere information.
10. base station as claimed in claim 9, is characterized in that, described power decreasing information comprises power adjustment step-length;
Described judging module, for according to the target signal to noise ratio of setting and the local area channel quality information of described local area user equipment to report, obtains and disturbs total amount minimizing value; Be that described controlled base station assigns power is adjusted step-length according to described interference total amount minimizing value.
11. base stations as claimed in claim 8, is characterized in that,
Described judging module, also for determining that according to described interfere information described local area subscriber equipment is disturbed by adjacent area.
12. base stations as claimed in claim 8, is characterized in that,
Described judging module, specifically for determining described controlled base station according at least one in following judgment condition:
Local area signal to noise ratio is less than the first threshold value;
Local area signal strength signal intensity is greater than the second threshold value, and neighboring area signal intensity is higher than local area signal strength signal intensity;
Adjacent area is disturbed and is greater than the 3rd threshold value.
13. base stations as claimed in claim 8, is characterized in that,
Described acquisition module, also for receiving the power control feedback information from described controlled base station;
Described judging module, also continues described controlled base station to carry out power control for judging whether according to described power control feedback information;
Described sending module, also in the judged result of described judging module when being, to described controlled base-station transmitting-power control command.
14. 1 kinds of power control systems, is characterized in that, comprising:
Be disturbed base station, for obtaining the interfere information of local area user equipment to report, determine the controlled base station that need to carry out power control according to described interfere information, and described in be disturbed base station to described controlled base-station transmitting-power control command, so that described controlled base station judges whether to carry out power control, and send refusal power control information to the described base station that is disturbed while being no when judged result, and when judged result is when being, carry out power adjustment according to described power control command, and send power control feedback information to the described base station that is disturbed;
Controlled base station, for receiving the power control command that is disturbed base station from described, carries out power adjustment according to described power control command;
Wherein, described in to be disturbed base station be a counter of controlled base station configuration, and counting thresholding, after receiving continuously a refusal power control information, adds 1 to this counter; In the time receiving power control feedback information, by counter zero setting; In the time that counter reaches counting thresholding, this controlled base station is removed from controlled set of cells to counter O reset;
Described base station opening timing device the configurator timing window of being disturbed, in the time that timer timing is within time window, does not trigger the power control to controlled base station; In the time of timer timing overtime window, this controlled base station is added to controlled set of cells, and by timer zero setting.
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| CN102340857A (en) * | 2010-07-26 | 2012-02-01 | 电信科学技术研究院 | Power control method and device |
| CN103327590B (en) | 2012-03-21 | 2017-10-10 | 华为技术有限公司 | The method and apparatus for determining transmission power |
| CN103428837B (en) * | 2012-05-16 | 2018-10-02 | 中兴通讯股份有限公司 | The method and system of base station transmitting power adjustment |
| CN102892124B (en) * | 2012-09-25 | 2015-02-25 | 中国联合网络通信集团有限公司 | Method, device and system for adjusting coverage area of base station |
| CN105530692A (en) * | 2014-10-27 | 2016-04-27 | 中兴通讯股份有限公司 | Downlink sending power control method and device |
| CN105142160B (en) * | 2015-09-15 | 2018-12-11 | 中国联合网络通信集团有限公司 | A kind of method and device of interference coordination |
| CN106535208B (en) * | 2016-11-15 | 2019-07-09 | 中国联合网络通信集团有限公司 | A kind of open method and system of interference coordination function |
| CN108243490B (en) * | 2016-12-26 | 2020-05-08 | 大唐移动通信设备有限公司 | Method and device for reducing uplink interference |
| CN109219121B (en) * | 2017-06-29 | 2020-12-01 | 上海华为技术有限公司 | Power control method and related equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003067783A2 (en) * | 2002-02-07 | 2003-08-14 | Qualcomm Incorporated | Power control of serving and non-serving base stations |
| CN1461161A (en) * | 2003-06-06 | 2003-12-10 | 北京大学 | Interference eliminating method between basic stations of mobile communication system and correspondent mobile communication system |
| CN101192871A (en) * | 2006-11-22 | 2008-06-04 | 北京三星通信技术研究有限公司 | Power control method for reduction of interference between relay systems |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101394649A (en) * | 2007-09-21 | 2009-03-25 | 夏普株式会社 | Method and base station for lowering interference between cells in uplink cell communication system |
-
2010
- 2010-06-22 CN CN201010215914.1A patent/CN102300306B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003067783A2 (en) * | 2002-02-07 | 2003-08-14 | Qualcomm Incorporated | Power control of serving and non-serving base stations |
| CN1461161A (en) * | 2003-06-06 | 2003-12-10 | 北京大学 | Interference eliminating method between basic stations of mobile communication system and correspondent mobile communication system |
| CN101192871A (en) * | 2006-11-22 | 2008-06-04 | 北京三星通信技术研究有限公司 | Power control method for reduction of interference between relay systems |
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