CN102281571A - Power control method and equipment - Google Patents

Abstract

The invention discloses a power control method and power control equipment. The method comprises the following steps that: a base station acquires interference information; the base station computes a transmitting power according to the interference information; and the base station regulates a current transmitting power according to the transmitting power. In a layered network scene, by controlling a downlink power under the assistance of user equipment (UE), the problem that in the layered network, a low-power base station or a macro base station interferes with other cells nearby can be effectively solved, so that coverage performance and data rate of the layered network are improved; and in a single-layer network scene, by adopting the method and the equipment, the coverage performance and data rate of the single-layer network can be also improved.

Description

A kind of method and apparatus of power control

Technical field

The present invention relates to communication technical field, relate in particular to a kind of method and apparatus of power control.

Background technology

Existing LTE (Long Term Evolution, Long Term Evolution) in the standard, on down direction, use power distributing technique, stipulated PDSCH (Physical Downlink Shared Channel, Physical Downlink Shared Channel), RE (Resource Element, the resource particle) power of PMCH (Physical broadcast channel, physical layer broadcast channel) and the concrete ratio relation between the reference symbol power.At ICIC (Inter-cell interference coordination, Inter-Cell Interference Coordination) in the downlink transfer, can pass through RNTP (Relative Narrowband TX Power, Relative Narrowband TX Power) parameter indication transmitting power, and avoid contingent interference problems of too in advance.

In concrete implementation procedure, can be according to the indication of RNTP, by dispatch interface user's PRB (Physical Resource Block, Physical Resource Block) priority is set, also can reduce the operation of resource power by the power control interface.

Below will introduce the control technology of disclosed relevant descending power for example.

(1) utilizes and to switch or the user of sub-district gravity treatment reports the metrical information of Home eNodeB (HeNB) macrocell, for example, RSRP (Reference Signal Received Power, the reference symbol received power), RSRQ (Reference Signal Received Quality, the reference symbol quality of reception) etc.; HeNB judges that this user is switched or the sub-district gravity treatment is because the signal difference of former Serving cell or because big the causing of interference of self made corresponding adjustment then.When making in this way, can use the measured value of macrocell reporting of user, and can multiplexing existing switching flow, when sending handoff request, information is notified to Home eNodeB carries out subsequent treatment.

(2) transmitting power of HeNB is set, and by open loop power control realize Ptx=max (min (and α PM+ β, Pmax), Pmin) [dBm], wherein, Pmax/Pmin is maximum/minimum emissive power of HeNB, PM is the received power at the grand station (MeNB) that records, and α, β adjust parameter.

Concrete, if power control techniques uses user's the disturbed value and the measuring amount (RSRP, RSRQ etc.) of channel quality, then need certain reporting of user mechanism to support.In the present LTE system, measurement event comprises A1, A2, and A3, A4, the A5 incident, the implication of each incident is respectively: EventA1: the measuring amount of Serving cell＞absolute thresholding; Event A2: the measuring amount of Serving cell＜absolute thresholding; EventA3: adjacent cell measurement amount+offset＞Serving cell measuring amount (offset can on the occasion of or negative value); Event A4: the measuring amount of adjacent sub-district＞absolute thresholding; Event A5: the measuring amount＜thresholding 1 of Serving cell and the measuring amount＞thresholding 2 of adjacent sub-district.

But in realizing process of the present invention, the inventor finds to exist at least in the prior art following problem:

As shown in Figure 1, for CSG (Closed Subscriber Group, the closed signed user group) situation, UE (User Equipment, subscriber equipment) 1 belongs to macro base station, Home eNodeB only can authorization of service CSG user because UE2 is CSG user, then UE2 can be linked into Home eNodeB by the mode of authentication.

When UE1 is positioned at the coverage of Home eNodeB, because UE1 is different from UE2, not the CSG user who authorizes, even the intensity of Home eNodeB signal is higher than the signal strength signal intensity of macro base station far away, UE1 also can't switch to Home eNodeB, and will be subjected to the strong jamming from Home eNodeB, thereby can cause the non-constant of channel condition of UE1, and produce situation such as call drop, or even can't operate as normal.

For OSG (Open Subscriber Group, exploitation contracted user group) situation, switch the individual character skew when being provided with the sub-district, perhaps during the skew of interlayer, even the situation of the signal strength signal intensity of adjacent area far above the current service cell signal strength signal intensity occur, UE also can't switch to the strongest sub-district, and can be subjected to corresponding interference, the non-constant of channel condition that causes UE, and produce situation such as call drop, or even can't operate as normal.

Summary of the invention

The invention provides a kind of method and apparatus of power control, with of the interference of minimizing base station to other community users, and the covering performance and the message transmission rate of raising hierarchical network.

In order to achieve the above object, the embodiment of the invention provides a kind of method of power control, comprising:

The base station obtains interfere information;

Transmitting power is calculated according to described interfere information in described base station;

Current transmit power is adjusted according to described transmitting power in described base station.

The embodiment of the invention provides a kind of equipment of power control, comprising:

Acquisition module is used to obtain interfere information;

Computing module is used for calculating transmitting power according to the described interfere information that described acquisition module obtains;

Adjusting module is used for adjusting current transmit power according to the described transmitting power that described computing module calculates.

The embodiment of the invention provides a kind of method of power control, comprising:

Base station configuration is used for the measurement event and the corresponding parameters of power control, and described measurement event and corresponding parameters are notified to user equipment (UE);

Described UE carries out local area channel quality measurement and adjacent area interferometry according to described measurement event and corresponding parameters, and when determining to satisfy the trigger condition of described measurement event according to measurement result, to described base station reporting measurement value;

Described base station obtains described interfere information according to described measured value, and adjusts current transmit power according to described interfere information power.

The embodiment of the invention provides a kind of equipment of power control, comprising:

Configuration module is used to dispose the measurement event and the corresponding parameters that are used for power control;

Sending module is used for the described measurement event and the corresponding parameters of described configuration module configuration are notified to user equipment (UE); Carry out local area channel quality measurement and adjacent area interferometry by described UE according to described measurement event and corresponding parameters;

Receiver module is used for receiving the measured value that described UE reports to described base station when described UE determines to satisfy the trigger condition of described measurement event according to measurement result;

Acquisition module is used for obtaining described interfere information according to the described measured value that described receiver module receives;

Adjusting module is used for adjusting current transmit power according to the described interfere information power that described acquisition module obtains.

Compared with prior art, the embodiment of the invention has the following advantages at least:

In the hierarchical network scene, carry out the control of descending power by the mode that UE assists, can effectively improve in the hierarchical network, low power base station or macro base station are near the interference problem of other community users, thus the covering performance and the data rate of raising hierarchical network.Same, in the single layer network scene, also can improve the covering performance and the data rate of single layer network by adopting the present invention.

Description of drawings

In order to be illustrated more clearly in technical scheme of the present invention, the accompanying drawing of required use is done to introduce simply in will describing embodiment 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 for the schematic diagram of CSG situation in the prior art;

Fig. 2 is the method flow schematic diagram of a kind of power control that provides of the embodiment of the invention one;

Fig. 3 is that the UE of a kind of auxiliary power control that provides of the embodiment of the invention three measures the report method schematic flow sheet;

Fig. 4 is the schematic diagram of being measured by base station side self in the embodiment of the invention nine;

Fig. 5 is the device structure schematic diagram of a kind of power control that provides of the embodiment of the invention;

Fig. 6 is the device structure schematic diagram of the another kind of power control that provides of the embodiment of the invention.

Embodiment

Requirement along with growing data rate and business load, traditional use macro base station individual layer covers provides the method for access can not satisfy the demands, the employing layering covers, and can be good at addressing this is that at hot zones or some lower powered base stations of indoor deployment (Home eNodeB/Pico/Femto/Relay).Wherein, this lower powered base station is a kind of base station equipment that is applied under family's indoor environment, working environment or the little overlay environment of other focus, can make operator that high data rate, attractive business more cheaply are provided more.

Can be subjected to the strong jamming of base station in order to solve UE in the prior art, thereby the non-constant of the channel condition that can cause UE, and the situation of generation call drop, or even can't operate as normal etc. problem, the embodiment of the invention provides a kind of method and apparatus of power control, with in the hierarchical network scene, carry out the control of descending power by the mode that UE assists, can effectively improve in the hierarchical network, low power base station or macro base station are near the interference problem of other community users, thus the covering performance and the data rate of raising hierarchical network.Certainly, in actual applications, the method and apparatus of the power control that the embodiment of the invention provides, can also be in the network scenarios of individual layer, carry out the control of descending power by the mode that UE assists, and effectively improve interference problem in the single layer network, thus improve the covering performance and the data rate of single layer network, be that example describes with the hierarchical network in the embodiment of the invention.

Below in conjunction with the accompanying drawing among the present invention, the technical scheme among the present invention is clearly and completely described, obviously, described embodiment only is a part of embodiment of the present invention, 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 one provides a kind of method of power control, as shown in Figure 2, may further comprise the steps:

Step 201, the base station obtains interfere information.

Step 202, transmitting power is calculated according to described interfere information in described base station.

Step 203, current transmit power is adjusted according to described transmitting power in described base station.

In the embodiment of the invention, described base station obtains interfere information, comprising: described base station configuration is used for the measurement event and the corresponding parameters of power control, and described measurement event and corresponding parameters are notified to user equipment (UE); Described UE carries out local area channel quality measurement and adjacent area interferometry according to described measurement event and corresponding parameters, and when determining to satisfy the trigger condition of described measurement event according to measurement result, to described base station reporting measurement value; Described base station obtains described interfere information according to described measured value.

Wherein, described base station configuration corresponding parameters comprises: disturb when being lower than default value described base station configuration adjacent area can trigger the corresponding parameters of measuring reported event; By this corresponding parameters, the trigger condition that makes measurement report is looser with respect to handover measurement, when the adjacent area interference is less, also can trigger the measurement reported event.Described measured value comprises: the reference symbol received power RSRP of local area, the reference symbol quality of reception RSRQ of local area, and the RSRP of adjacent area.

Described interfere information comprises a kind of or several arbitrarily in the following content: user's target signal to noise ratio, adjacent area interference value, circuit loss value; Transmitting power is calculated according to described interfere information in described base station, comprising: described base station is according to formula:

$P_{\mathrm{UE}\_\mathrm{recieved}}\left(i\right)=10{\log }_{10}({10}^{I/10}+{10}^{N_{\mathrm{background}\_\mathrm{noise}}/10})+x\left(i\right)+\mathrm{\Δ}\left(i\right)\left[\mathrm{dBm}\right]$

P(i)＝max(Pmin，min(α·pathloss+P _{UE_recieved}(i)，Pmax)[dBm]

Calculate described transmitting power; Wherein, I is adjacent area interference value, N _{Background_noise}For background noise value, x (i) are that adjustable parameter, α are that path loss penalty coefficient, pathloss are that circuit loss value, Pmin are that lower limit, the Pmax of transmitting power is the upper limit of transmitting power for user's target signal to noise ratio, Δ (i).

Further, the acquisition mode of described adjacent area interference value comprises: described base station with the RSRP of the strongest adjacent area in the described measured value as described adjacent area interference value; Perhaps, described base station with the RSRP of the strongest Hong Qu in the described measured value as described adjacent area interference value; Perhaps, described base station according to the RSRQ of the local area in the described measured value and RSRP calculate disturb and, and should disturb and as described adjacent area interference value; Perhaps, described base station obtains the RSRQ of local area according to the channel quality indicator (CQI) that reports, and according to the RSRP of RSRQ that obtains and the local area in the measured value calculate disturb and, and should disturb and as described adjacent area interference value.

The acquisition mode of described circuit loss value comprises: described base station obtains described circuit loss value according to default empirical value; Perhaps, described circuit loss value is calculated according to the RSRP value of the local area in the described measured value and the current transmit power of described base station in described base station.

During a plurality of UE report in receiving the sub-district measured value, the acquisition mode of described adjacent area interference value and described circuit loss value comprises: the adjacent area interference value that is disturbed maximum UE correspondence in the measured value that the UE in this sub-district of described base station selection reports is as described adjacent area interference value, and the circuit loss value of choosing the UE correspondence of RSRP minimum in the measured value that the UE in this sub-district reports is described circuit loss value; Perhaps, described base station uses the adjacent area interference value of mean value correspondence of the measured value that a plurality of UE report as described adjacent area interference value, and to use the circuit loss value of the mean value correspondence of the measured value that a plurality of UE report be described circuit loss value; Perhaps, the adjacent area interference value of the adjacent area interference value of the measured value correspondence that each UE reports as this UE used in described base station, and uses the circuit loss value of the circuit loss value of the measured value correspondence that each UE reports as this UE.

Described base station obtains interfere information, comprising: described base station uses idle time slot to obtain the interfere information of adjacent sub-district according to preset period.

In addition, described base station obtains interfere information, also comprises before: described base station receives the power control command from adjacent base station, and carrying in the described power control command has UE to be subjected to the information of described base station interference under the described adjacent base station; When described base station determines that according to described power control command needs are adjusted current transmit power, then carry out the operation that described base station obtains interfere information.

In the embodiment of the invention, current transmit power is adjusted according to described transmitting power in described base station, comprising: when UE satisfied the default capabilities requirement in local area, described base station reduced the transmitting power of self, to avoid the interference to adjacent area UE.

As seen, in the embodiment of the invention, in the hierarchical network scene, carry out the control of descending power by the mode that UE assists, can effectively improve in the hierarchical network, low power base station or macro base station are near the interference problem of other community users, thus the covering performance and the data rate of raising hierarchical network.

In order more clearly to set forth the technical scheme that the embodiment of the invention provides, below in conjunction with specific embodiment the method for this power control is discussed in detail, wherein, the method for this power control is descending Poewr control method.In the embodiment of the invention, method, the UE measurement report method of auxiliary power control, the power control triggering method of power control will be introduced in detail.

The method of power control

In the embodiment of the invention, for fear of descending interference to the adjacent area user, down transmitting power need be calculated according to interfere information in the base station, guaranteeing that the local area user satisfies under the prerequisite of certain performance requirement, reduce the transmitting power of self as far as possible, thereby reach the purpose of avoiding adjacent area user's descending interference.Wherein, this interfere information includes but not limited to: the radiation pattern of local area user's target signal to noise ratio, UE residing adjacent area interference, local area path loss, base station data etc.

Embodiment 2:

In the present embodiment, calculate the mode of down transmitting power according to interfere information with introducing the base station in detail.Layering networking with macro base station and Home eNodeB is an example, and then calculating the mode of down transmitting power according to interfere information can be as shown in Equation (1):

$P_{\mathrm{UE}\_\mathrm{recieved}}\left(i\right)=10{\log }_{10}({10}^{I/10}+{10}^{N_{\mathrm{background}\_\mathrm{noise}}/10})+x\left(i\right)+\mathrm{\Δ}\left(i\right)\left[\mathrm{dBm}\right]$ Formula (1)

P _HeNB(i)＝max(Pmin，min(α·pathloss+P _{UE_recieved}(i)，Pmax)[dBm]

In formula (1), the implication of each data is as follows:

(1) I is the adjacent area interference value that measures, and unit is dBm, when specific implementation, can use but is not limited to following numerical value: the strongest adjacent area interference value, the interference total value of all adjacent areas, when base station the strongest grand district interference value etc. during as low power nodes.

(2) N _{Background_noise}Be the background noise value, unit is dBm.

(3) x (i) is the ownership goal signal to noise ratio, and unit is dB; The size of this x (i) can be provided with according to the operation needs of HeNB.

For example, dispose this x (i) according to interference coordination target and demodulation threshold.

Again for example, whether have the user's information outside the strongly disturbing CSG that suffers around HeNB is known, then HeNB can use the reference of this information as the configuration target signal to noise ratio.When not having the MUE that disturbed or existing and when being subjected to interference strength to be lower than default thresholding or MUE local area signal to be higher than default thresholding, can dispose bigger target signal to noise ratio; When existence is subjected to strongly disturbing MUE and interference strength to be lower than default thresholding greater than certain thresholding or MUE local area signal, then can dispose smaller target signal to noise ratio.

(4) Δ (i) for dedicated channel, can be adjusted transmitting power according to different adaptive M CS (modulation and coding style, modulation coding mode) grade; For common signal channel, can require to strengthen or cut down according to different receptivities.

(5) the α value can be according to the power control flexible configuration of application scenarios and different channels as the path loss penalty coefficient.

(6) pathloss is the path loss that UE is arrived in the base station, and unit is dB, includes but not limited to following numerical value: default empirical value is used in configuration; By the RSRP value that user's measurement reports, the estimated value that draws is as input parameter pathloss.

(7) Pmin is the lower limit of transmitting power, and unit is dBm.

(8) Pmax is the upper limit of transmitting power, and unit is dBm.

In order to further specify each parameter in the above-mentioned formula (1), below will introduce the acquisition mode of each parameter in detail.

The calculating of adjacent area interference value I

In above-mentioned formula (1), I is the adjacent area interference value that measures, and includes but not limited to: the maximum RSRP in the adjacent area that the adjacent area interference value that (1) is the strongest, this numerical value can use UE to report obtains; (2) when base station the strongest grand district interference value during as low power nodes, this numerical value can use the RSRP of the specific adjacent area that UE reports to obtain; (3) RSRQ and local area RSRP that the interference total value of all adjacent areas, this numerical value can use UE to report obtain, and the CQI (Channel Quality Indicator, channel quality indication) that also can use UE to report obtains; If the CQI value of using UE to report after then smoothing processing need be done to the CQI value in the base station, is carried out the calculating of I value according to the RSRQ value of result's reflection.

Concrete, the account form of adjacent area interference value I as shown in Equation (2):

$I=\left\{\begin{array}{c}{\mathrm{RSRP}}_{\mathrm{strongestadjacentcell}}\\ {\mathrm{RSRP}}_{\mathrm{strongestMacrocell}}\\ 10{\log }_{10}({10}^{({\mathrm{RSRP}}_{\mathrm{belongcell}}-\mathrm{RSRQ})/10}-{10}^{N_{\mathrm{backgrondnoise}}/10})\end{array}\right.$ Formula (2)

Therefore, in the embodiment of the invention, according to the actual needs, can be with the strongest adjacent area RSRP that measures as the input parameter I that calculates transmitting power; Perhaps, can be with the strongest grand district RSRP that measures as the input parameter I that calculates transmitting power; Perhaps, behind local area RSRQ and RSRP that base station acquisition service-user reports, according to formula

Calculate to disturb and, and will disturb and the input parameter I of conduct calculating transmitting power; Perhaps, can do according to the CQI that service-user reports to obtain local area RSRQ after the smoothing processing, and cooperate the RSRP that reports, and according to formula

Calculate to disturb and, with this interference with as the input parameter I of calculating transmitting power.

The calculating of circuit loss value pathloss

In above-mentioned formula (1), pathloss is the circuit loss value that UE is arrived in the base station, includes but not limited to: (1) uses default empirical value, and this empirical value can obtain by the covering size estimation of expectation; (2) calculate this circuit loss value pathloss by the RSRP value of local area reporting of user and the transmitting power of base station, as shown in Equation (3):

Pathloss=P _HeNB-RSRP _{Belong cell}Formula (3)

Therefore, in the embodiment of the invention, according to the actual needs, and can be by the covering magnitude estimation of expectation, the value of configuration input parameter pathloss; Perhaps, can pass through the local area RSRP size of reporting of user, and use formula (3) estimation path loss, and be used for disposing the value of input parameter pathloss.

In sum, by using aforesaid way, promptly can calculate down transmitting power, and avoid descending interference the adjacent area user according to interfere information.But in actual applications, the base station need obtain this interfere information from the UE side, and in order to obtain this interfere information from the UE side, in the embodiment of the invention, the UE that has proposed auxiliary power control measures report method, below will discuss in detail this method.

The UE of auxiliary power control measures report method

Because the input parameter (being the parameter in the formula 1) of above-mentioned power control need utilize existing measurement reported event mechanism to obtain, in order to obtain current signal quality of user and the disturbed condition that is subjected to the adjacent area, thereby calculate down transmitting power, in the embodiment of the invention, need the UE side to report relevant parameter.

Concrete, in the measurement event of LTE system, owing to need the UE side to report RSRP or RSRQ to carry out flexible configuration by the high-level signaling of base station, and in the described scene of the embodiment of the invention, the effect of the amount of reporting is to provide relevant parameter (rather than carrying out sub-district switching and gravity treatment) for descending power control, therefore, the base station can dispose the measurement event parameter that is used for power control accordingly by high level.

Further, satisfy the trigger gate of measurement event when disturbed condition and prescribe a time limit, UE will measure and report, and relevant parameter is reported the base station, calculate down transmitting power by the base station according to relevant parameter, and carry out power control.

In the embodiment of the invention, in the process that the UE measurement that auxiliary power is controlled reports, the triggering thresholding that uses is inequality with the triggering thresholding that is generally used for switching to reported event, in the embodiment of the invention, trigger gate is being set in limited time, need guarantee under the metastable condition of the channel condition of service-user, for the control of the descending power in the hierarchical network provides enough reference measurement values.

Embodiment 3:

Present embodiment provides a kind of UE of auxiliary power control to measure report method, as shown in Figure 3, can may further comprise the steps:

Step 301, base station configuration are used for parameters such as the measurement event of power control and relative trigger thresholding.

Step 302, UE carries out local area channel quality and adjacent area interferometry.

When base station configuration be used for after the parameters such as the measurement event of power control and relative trigger thresholding, can pass through RRC (Radio Resource Control, Radio Resource control) signaling is notified to UE with above-mentioned information, and UE then needs to carry out local area channel quality and adjacent area interferometry according to above-mentioned information.

Step 303, UE judges whether to satisfy the trigger condition of measurement event according to measurement result, if satisfy, forwards step 304 to, otherwise, forward to and proceed in the step 302 to measure.

Step 304 trigger to be measured reported event, and UE is to base station reporting measurement value, and calculates down transmitting power by the base station according to this measured value.

For the UE that this auxiliary power control more clearly is described measures report method, be further detailed below in conjunction with specific embodiment.

Embodiment 4

In the layering networking, can use the eventA4 of configuration LTE to realize that measurement reports, key step comprises:

(1) base station is in order to obtain adjacent area interference value and local area channel quality, at high level configuration eventA4 be lower than the threshold T hre_A4 of handover measurement requirement, by this threshold T hre_A4, even make the adjacent area disturb when being not very big, also can guarantee to trigger reporting of eventA4.

In addition, the base station also needs to dispose the frequency range individual character skew Ofn of adjacent sub-district, adjacent sub-district individual character skew Ocn, incident lag parameter Hys.

(2) UE measures the interference strength Mn of adjacent sub-district, if Mn+Ofn+Ocn＞Thre_A4 then triggers and enters incident eventA4, and reports the RSRP and the RSRQ of local area, and the RSRP of adjacent area.

In the embodiment of the invention, if the UE of this auxiliary power control measures report method and is applied in the hierarchical network, then ought relate to measuring amount between the sub-district relatively and during the skew of sub-district individual character, also need to add the consideration of interlayer side-play amount, describe below in conjunction with embodiment 5.

Embodiment 5

Can use the eventA3 of configuration LTE system to realize that measurement reports, key step comprises:

(1) base station is in order to obtain adjacent area interference value and local area channel quality, and at high level configuration eventA3, and the frequency range individual character of Serving cell is offset Ofs, Serving cell individual character skew Ocs; The frequency range individual character skew Ofn of adjacent sub-district, adjacent sub-district individual character skew Ocn; And event offset parameter O_eventA3, incident lag parameter Hys.

In addition, report in order to guarantee to trigger eventA3, the individual character deviant of event offset value and each Serving cell can be set is lower than the handover measurement requirement, even can be negative value.

(2) UE measures local area signal Ms and adjacent area interference intensity Mn, replaces Mn+Ofn+Ocn-Hys＞Ms+Ofs+Ocs+O_eventA3, then triggers entering eventA3, reports the RSRP and the RSRQ of local area, and the RSRP of adjacent area.

Need to prove, measure among each embodiment of report method at the UE of above-mentioned auxiliary power control, be process at independent UE reporting measurement, but in actual applications, the process that a plurality of UE reporting measurements also can occur, and corresponding processing mode includes but not limited to when having a plurality of UE reporting measurement: (1) chooses the interference value that is disturbed maximum user's correspondence in the reporting of user measuring amount in this sub-district, with the path loss of user's correspondence of RSRP minimum, as the basis of the input parameter of power control.(2) use the basis of the mean value of a plurality of reporting of user measuring amount as the input parameter of power control.(3) each user's power control process is used the basis of this user's reporting measurement value as the input parameter of power control separately.

Embodiment 6

Present embodiment is that example describes at (1) above-mentioned kind processing mode with Home eNodeB and macro base station layering networking, may further comprise the steps:

(1) configure user is measured reported event.

(2) when a plurality of reporting of user measuring amount in the sub-district, Home eNodeB is chosen the maximum of the Hong Qu that reports in disturbing according to formula (4), and the maximum substitution formula (2) during Hong Qu disturbed, calculating parameter I.

$I=\underset{i,j}{\max }\left\{{\mathrm{RSRP}}_{\mathrm{adjacentMacrocell}}(i,j)\right\},i=\mathrm{1,2},...,N_{\mathrm{adj}\_\mathrm{Macro}},j=\mathrm{1,2},...,N_{\mathrm{UE}}$ Formula (4)

Home eNodeB is chosen the minimum value among the local area RSRP that reports according to formula (5), and with minimum value substitution formula (3) the calculating parameter pathloss among the local area RSRP.

RSRP _{Belong cell}=min{RSRP _{Serving cell report}(i) }, i=1,2 ..., N _UEFormula (5)

In actual applications, when the family base station only can access a user's the measuring amount of correspondence, then directly with the value of reporting substitution formula (2) and (3) of this measuring amount, calculating parameter I and parameter p athloss.

(3) Home eNodeB calculates the transmitting power of PBCH (Physical broadcast channel, Physical Broadcast Channel) with the input parameter I and the parameter p athloss substitution formula (1) that obtain, and current transmit power is adjusted accordingly.

Embodiment 7

Present embodiment is that example describes at (2) above-mentioned kind processing mode with Home eNodeB and macro base station layering networking, may further comprise the steps:

(1) configure user is measured reported event.

(2) when a plurality of reporting of user measuring amount in the sub-district, Home eNodeB disturbs the strongest Hong Qu of each reporting of user according to formula (6) and averages, and the strongest Hong Qu is disturbed the substitution formula (2) of averaging, calculating parameter I.

$I=\frac{1}{N_{\mathrm{UE}}}\underset{j=1}{\overset{N_{\mathrm{UE}}}{\mathrm{\Σ}}}\underset{i}{\max }\left\{{\mathrm{RSRP}}_{\mathrm{adjacentMacrocell}}(i,j)\right\},i=\mathrm{1,2},...,N_{\mathrm{adj}\_\mathrm{Macro}},j=\mathrm{1,2},...,N_{\mathrm{UE}}$ Formula (6)

Home eNodeB is averaged the local area RSRP that reports according to formula (7), and with mean value substitution formula (3) the calculating parameter pathloss of local area RSRP.

${\mathrm{RSRP}}_{\mathrm{belongcell}}=\frac{1}{N_{\mathrm{UE}}}\underset{i=1}{\overset{N_{\mathrm{UE}}}{\mathrm{\Σ}}}{\mathrm{RSRP}}_{\mathrm{servingcellreport}}\left(i\right),i=1,2,...,N_{\mathrm{UE}}$ Formula (7)

In actual applications, when the family base station only can access a user's the measuring amount of correspondence, then directly with the value of reporting substitution formula (2) and (3) of this measuring amount, calculating parameter I and parameter p athloss.

(3) Home eNodeB calculates the transmitting power of PMCH (Physical Multicast channel, physical layer Multicast Channel) with the input parameter I and the parameter p athloss substitution formula (1) that obtain, and current transmit power is adjusted accordingly.

Embodiment 8

Present embodiment is that example describes at (3) above-mentioned kind processing mode with Home eNodeB and macro base station layering networking, may further comprise the steps:

(1) measures reported event for each user's configuration user separately.

(2) when a plurality of reporting of user measuring amount in the sub-district, Home eNodeB uses the grand district maximum interference and the local area RSRP of each reporting of user, and substitution formula (2) and formula (3) are independent calculating parameter I of each user and parameter p athloss respectively.

(3) Home eNodeB is with the input parameter I and the parameter p athloss substitution formula (1) that obtain, PDCCH (Physical Downlink Control Channel for each user, Physical Downlink Control Channel) calculates transmitting power, and current transmit power is adjusted accordingly.

It should be noted that, in actual applications, at PDCCH, PDSCH (Physical Downlink Shared Channel, Physical Downlink Shared Channel) etc. user's associated channel can adopt each user's power control process to use the processing mode of this user's reporting measurement value as the basis of the input parameter of power control separately.

At PBCH, PMCH, common signal channel and public guide frequency resource locations such as CRS, can adopt the interference value that is disturbed maximum user's correspondence in the reporting of user measuring amount of choosing in this sub-district, path loss with user's correspondence of RSRP minimum, processing mode as the basis of the input parameter of power control perhaps adopts, and uses the processing mode of the mean value of a plurality of reporting of user measuring amount as the basis of the input parameter of power control.

Need to prove, in actual applications, can also measure by base station side self, and need not report by the measurement of UE side.For example,, do not have suitable UE to measure and give the correct time if in the sub-district of Home eNodeB, perhaps the base station can't receive correctly that the UE measurement reports as a result the time, then some precision can be considered to lose in the base station, and are carried out the measurement of relevant parameter by base station self.

In this case, when the family base station after start, Home eNodeB self will carry out the interference value of adjacent sub-district to be measured, and carries out the calculating of down transmitting power after measurement is finished according to measurement result.At this moment, this processing mode can be semi-static processing mode, and the interference value that Home eNodeB can periodically utilize some idle time slots to carry out adjacent sub-district is measured, and carries out the calculating of down transmitting power according to measurement result.

Embodiment 9

As shown in Figure 4, UE1 belongs to low-power node LPN, UE2 belongs to grand station, when UE2 can't belong to LPN, this UE2 will be subjected to the strong jamming of LPN, and the mode of LPN power control is mainly: because the geographical position of LPN and UE1 is nearer, LPN can monitor the interference value at grand station, perhaps, will be from the interference and the next approximate interference value that is subjected to as UE1 of all adjacent sub-districts.LPN calculates transmitting power according to this interference value, and current transmit power is adjusted accordingly, to reduce the strong jamming to UE2.

Need to prove,, promptly can calculate down transmitting power, and avoid descending interference the adjacent area user according to the interfere information that the adjacent area reports by using aforesaid way.But in actual applications, trigger the mode that interfere information that the base station reports according to the adjacent area calculates down transmitting power and can trigger the process that the interfere information that reports according to the adjacent area calculates down transmitting power according to self needs for: base station; Can also calculate the process of down transmitting power for the interfere information that adjacent base station triggers base station reports according to the adjacent area.In the embodiment of the invention, also proposed the method (being power control triggering method) that interfere information that adjacent base station triggers base station reports according to the adjacent area calculates down transmitting power, below will discuss in detail this method.

Power control triggering method

In the embodiment of the invention,, can also carry out following operation: when existing, then trigger the power control of this base station by the adjacent area user of this base station interference in order further to strengthen the performance of power control; When not existing by the adjacent area user of this base station interference, then do not trigger the power control of this base station, the full power emission is directly used in the base station.

Concrete, the sub-district that is interfered can be by the adjacent area interferometry incident of UE, the interference value of judging interfered cell surpasses default thresholding, and can notify corresponding interfered cell, and whether interfered cell will trigger the foundation of base station power control according to this announcement information conduct; In addition, this interfered cell can also be with the reference of this interference value as the parameter x in the allocating power control method.

Embodiment 10

In this power control trigger method, can may further comprise the steps:

(1) high level is grand district user MUE allocating and measuring reported event eventA3.

(2) MUE measures the RSRP of adjacent sub-district.

(3) MUE judges to disturb whether surpass default thresholding according to the RSRP of this neighbour sub-district.If (signal that is the adjacent sub-district that measures of MUE surpasses default thresholding), execution in step (4) then, otherwise, continue the measuring process of execution in step (2).

(4) triggering enters eventA3, and MUE reports interference value to MeNB.

(5) after MeNB receives the adjacent area interferometry report that MUE reports, judge whether transmission power control commands, if, execution in step (6) then.

(6) MeNB, notifies adjacent base station local area to exist and receives strongly disturbing MUE to interference source adjacent area transmission power control commands by X2 mouth/S1 mouth, and reports the reference of corresponding interference strength information as adjacent base station power control.

In addition, it should be noted that, when existence and reliability owing to X2 mouth/S1 mouth, or other reason, cause to be subjected to user's measurement of interfered cell to report when triggering power control, can also periodically trigger the power control operation of self by the base station, describe below in conjunction with embodiment 11.

Embodiment 11

(1) high level is a base station side allocating power controlled function, and is defined as periodic trigger mode, and configure trigger period T p opens timer.

(2) when timer arrive to trigger period T p, trigger control function of power and open, and dispose corresponding user's measurement event for UE.

(3) disturb and the corresponding input parameter of local area channel quality estimation according to the adjacent area that measures the base station, and substitution formula (1) calculates transmitting power, and current transmitting power is carried out corresponding power adjustment.

(4) the timer zero setting of control function of power, and jump to step (2).

For the method for more clearly setting forth the power control that the embodiment of the invention proposes, the UE of auxiliary power control measure report method, power control triggering method, application scenarios below in conjunction with macro base station and Home eNodeB layering networking is further detailed the embodiment of the invention.

Embodiment 12

When (1) MUE measures the strong jamming of adjacent C SG sub-district, report local area RSRP, RSRQ value, and the RSRP value of adjacent area to MeNB.

(2) MeNB receives after the interference that MUE reports, and judges whether transmission power control commands, if) MeNB sends power control commands and corresponding prompt information, interference value and channel quality information by X2 mouth/S1 mouth to HeNB.

(3) HeNB receive exist be subjected to the relevant information and interference value information of the strongly disturbing MUE of local area after, judge whether to carry out power control.If judged result is for being the then high-rise starting power controlled function of HeNB side, and configuration eventA3, and the frequency range individual character of Serving cell skew Ofs, Serving cell individual character skew Ocs; The frequency range individual character skew Ofn of adjacent sub-district, adjacent sub-district individual character skew Ocn; Event offset parameter O_eventA3, incident lag parameter Hys; And report in order to guarantee to trigger eventA3, the individual character deviant of event offset value and each Serving cell can be set is lower than handover measurement requirement or even negative value; If judged result is that then HeNB does not directly launch with maximum transmission power.

(4) UE measures local area signal Ms and adjacent area interference intensity Mn, if Mn+Ofn+Ocn-Hys＞Ms+Ofs+Ocs+O_eventA3 then triggers and enters eventA3, reports the RSRP and the RSRQ of local area, and the RSRP of adjacent area.

(5) HeNB chooses maximum as I from the interference value of these all reporting of user of sub-district, and use the value of RSRP minimum to calculate pathloss, and the local area that biography is come from step (2) is to the interfere information of adjacent area, obtain the suitable target signal to noise ratio of local area user, use formula (1) to calculate transmitting power then, and current power is adjusted.

Embodiment 13

Based on the inventive concept same with said method, a kind of equipment of power control also is provided in the embodiment of the invention, as shown in Figure 5, comprising:

Acquisition module 11 is used to obtain interfere information.

Computing module 12 is used for calculating transmitting power according to the described interfere information that described acquisition module 11 obtains.

Adjusting module 13 is used for adjusting current transmit power according to the described transmitting power that described computing module 12 calculates.

In the embodiment of the invention, described acquisition module 11 specifically is used to dispose the measurement event and the corresponding parameters that are used for power control, and described measurement event and corresponding parameters are notified to user equipment (UE); Carry out local area channel quality measurement and adjacent area interferometry by described UE according to described measurement event and corresponding parameters, and when determining to satisfy the trigger condition of described measurement event according to measurement result, to described base station reporting measurement value; And obtain described interfere information according to described measured value.

The corresponding parameters of described configuration comprises: disturb when being lower than default value the adjacent area of configuration can trigger the corresponding parameters of measuring reported event; Described measured value comprises: the reference symbol received power RSRP of local area, the reference symbol quality of reception RSRQ of local area, and the RSRP of adjacent area.

Described interfere information comprises a kind of or several arbitrarily in the following content: user's target signal to noise ratio, adjacent area interference value, circuit loss value; Described computing module 12 specifically is used for according to formula:

$P_{\mathrm{UE}\_\mathrm{recieved}}\left(i\right)=10{\log }_{10}({10}^{I/10}+{10}^{N_{\mathrm{background}\_\mathrm{noise}}/10})+x\left(i\right)+\mathrm{\Δ}\left(i\right)\left[\mathrm{dBm}\right]$

P(i)＝max(Pmin，min(α·pathloss+P _{UE_recieved}(i)，Pmax)[dBm]

Calculate described transmitting power; Wherein, I is adjacent area interference value, N _{Background_noise}For background noise value, x (i) are that adjustable parameter, α are that path loss penalty coefficient, pathloss are that circuit loss value, Pmin are that lower limit, the Pmax of transmitting power is the upper limit of transmitting power for user's target signal to noise ratio, Δ (i).

In addition, described acquisition module 11 also is used for RSRP with the strongest adjacent area of described measured value as described adjacent area interference value; Perhaps, with the RSRP of the strongest Hong Qu in the described measured value as described adjacent area interference value; Perhaps, according to the RSRQ of the local area in the described measured value and RSRP calculate disturb and, and should disturb and as described adjacent area interference value; Perhaps, obtain the RSRQ of local area according to the channel quality indicator (CQI) that reports, and according to the RSRP of RSRQ that obtains and the local area in the measured value calculate disturb and, and should disturb and as described adjacent area interference value.

Described acquisition module 11 also is used for obtaining described circuit loss value according to default empirical value; Perhaps, calculate described circuit loss value according to the RSRP value of the local area in the described measured value and the current transmit power of described base station.

During a plurality of UE report in receiving the sub-district measured value, described acquisition module 11, also be used for choosing adjacent area interference value that measured value that the UE in this sub-district reports disturbed maximum UE correspondence as described adjacent area interference value, and the circuit loss value of choosing the UE correspondence of RSRP minimum in the measured value that the UE in this sub-district reports is described circuit loss value; Perhaps, the adjacent area interference value of mean value correspondence that uses the measured value that a plurality of UE report is as described adjacent area interference value, and to use the circuit loss value of the mean value correspondence of the measured value that a plurality of UE report be described circuit loss value; Perhaps, use the adjacent area interference value of the adjacent area interference value of the measured value correspondence that each UE reports, and use the circuit loss value of the circuit loss value of the measured value correspondence that each UE reports as this UE as this UE.

In the embodiment of the invention, described acquisition module 11 specifically is used for using idle time slot to obtain the interfere information of adjacent sub-district according to preset period.

In the embodiment of the invention, this equipment also comprises:

Receiver module 14 is used to receive the power control command from adjacent base station, and carrying in the described power control command has UE to be subjected to the information of described base station interference under the described adjacent base station;

Determination module 15 is used for determining whether that according to described power control command needs adjust current transmit power, and when determining to adjust current transmit power, obtains interfere information by described acquisition module 11.

In the embodiment of the invention, described adjusting module 13 when specifically being used in local area UE and satisfying default capabilities and require, reduces the transmitting power of self, to avoid the interference to adjacent area UE.

Wherein, each module of apparatus of the present invention can be integrated in one, and also can separate deployment.Above-mentioned module can be merged into a module, also can further split into a plurality of submodules.

Embodiment 14

Based on the inventive concept same with said method, a kind of equipment of power control also is provided in the embodiment of the invention, as shown in Figure 6, comprising:

Configuration module 21 is used to dispose the measurement event and the corresponding parameters that are used for power control.

Sending module 22 is used for the described measurement event and the corresponding parameters of described configuration module 21 configurations are notified to user equipment (UE); Carry out local area channel quality measurement and adjacent area interferometry by described UE according to described measurement event and corresponding parameters.

Receiver module 23 is used for receiving the measured value that described UE reports to described base station when described UE determines to satisfy the trigger condition of described measurement event according to measurement result.

Acquisition module 24 is used for obtaining described interfere information according to the described measured value that described receiver module 23 receives.

Adjusting module 25 is used for adjusting current transmit power according to the described interfere information power that described acquisition module 24 obtains.

In the embodiment of the invention, the corresponding parameters of described configuration comprises: disturb when being lower than default value the adjacent area of configuration can trigger the corresponding parameters of measuring reported event; Described measured value comprises: the reference symbol received power RSRP of local area, the reference symbol quality of reception RSRQ of local area, and the RSRP of adjacent area.

Described adjusting module 25 specifically is used for calculating transmitting power according to described interfere information; And according to described transmitting power adjustment current transmit power.

In the embodiment of the invention, described interfere information comprises a kind of or several arbitrarily in the following content: user's target signal to noise ratio, adjacent area interference value, circuit loss value; Described adjusting module 25 is further used for according to formula:

$P_{\mathrm{UE}\_\mathrm{recieved}}\left(i\right)=10{\log }_{10}({10}^{I/10}+{10}^{N_{\mathrm{background}\_\mathrm{noise}}/10})+x\left(i\right)+\mathrm{\Δ}\left(i\right)\left[\mathrm{dBm}\right]$

P(i)＝max(Pmin，min(α·pathloss+P _{UE_recieved}(i)，Pmax)[dBm]

Calculate described transmitting power; Wherein, I is adjacent area interference value, N _{Background_noise}For background noise value, x (i) are that adjustable parameter, α are that path loss penalty coefficient, pathloss are that circuit loss value, Pmin are that lower limit, the Pmax of transmitting power is the upper limit of transmitting power for user's target signal to noise ratio, Δ (i).

In addition, described acquisition module 24 also is used to obtain described adjacent area interference value, is specially: with the RSRP of the strongest adjacent area in the described measured value as described adjacent area interference value; Perhaps, with the RSRP of the strongest Hong Qu in the described measured value as described adjacent area interference value; Perhaps, according to the RSRQ of the local area in the described measured value and RSRP calculate disturb and, and should disturb and as described adjacent area interference value; Perhaps, obtain the RSRQ of local area according to the channel quality indicator (CQI) that reports, and according to the RSRP of RSRQ that obtains and the local area in the measured value calculate disturb and, and should disturb and as described adjacent area interference value;

Obtain described circuit loss value, be specially: obtain described circuit loss value according to default empirical value; Perhaps, calculate described circuit loss value according to the RSRP value of the local area in the described measured value and the current transmit power of described base station;

During a plurality of UE report in receiving the sub-district measured value, obtain described adjacent area interference value and described circuit loss value, be specially: choose disturbed maximum UE correspondence in the measured value that the UE in this sub-district reports the adjacent area interference value as described adjacent area interference value, and the circuit loss value of choosing the UE correspondence of RSRP minimum in the measured value that the UE in this sub-district reports is described circuit loss value; Perhaps, the adjacent area interference value of mean value correspondence that uses the measured value that a plurality of UE report is as described adjacent area interference value, and to use the circuit loss value of the mean value correspondence of the measured value that a plurality of UE report be described circuit loss value; Perhaps, use the adjacent area interference value of the adjacent area interference value of the measured value correspondence that each UE reports, and use the circuit loss value of the circuit loss value of the measured value correspondence that each UE reports as this UE as this UE.

In the embodiment of the invention, described receiver module 23 also is used to receive the power control command from adjacent base station, and carrying in the described power control command has UE to be subjected to the information of described base station interference under the described adjacent base station;

Described equipment also comprises:

Determination module 26 is used for determining whether that according to described power control command needs adjust current transmit power, and when determining to adjust current transmit power, obtains interfere information by described acquisition module 24.

Described adjusting module 25 when specifically being used in local area UE and satisfying default capabilities and require, reduces the transmitting power of self, to avoid the interference to adjacent area UE.

Wherein, each module of apparatus of the present invention can be integrated in one, and also can separate deployment.Above-mentioned module can be merged into a module, also can further split into a plurality of submodules.

Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, 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, comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.

It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, module in the accompanying drawing or flow process might not be that enforcement the present invention is necessary.

It will be appreciated by those skilled in the art that the module in the device among the embodiment can be distributed in the device of embodiment according to the embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of the foregoing description can be merged into a module, also can further split into a plurality of submodules.

The invention described above embodiment sequence number is not represented the quality of embodiment just to description.

More than disclosed only be several specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.

Claims (34)

1. the method for a power control is characterized in that, comprising:

The base station obtains interfere information;

Transmitting power is calculated according to described interfere information in described base station;

Current transmit power is adjusted according to described transmitting power in described base station.

2. the method for claim 1 is characterized in that, described base station obtains interfere information, comprising:

Described base station configuration is used for the measurement event and the corresponding parameters of power control, and described measurement event and corresponding parameters are notified to user equipment (UE);

Described UE carries out local area channel quality measurement and adjacent area interferometry according to described measurement event and corresponding parameters, and when determining to satisfy the trigger condition of described measurement event according to measurement result, to described base station reporting measurement value;

Described base station obtains described interfere information according to described measured value.

3. method as claimed in claim 2 is characterized in that, described base station configuration corresponding parameters comprises: disturb when being lower than default value described base station configuration adjacent area can trigger the corresponding parameters of measuring reported event;

Described measured value comprises: the reference symbol received power RSRP of local area, the reference symbol quality of reception RSRQ of local area, and the RSRP of adjacent area.

4. method as claimed in claim 3 is characterized in that, described interfere information comprises a kind of or several arbitrarily in the following content: user's target signal to noise ratio, adjacent area interference value, circuit loss value;

Transmitting power is calculated according to described interfere information in described base station, comprising:

Described base station is according to formula:

$P_{\mathrm{UE}\_\mathrm{recieved}}\left(i\right)=10{\log }_{10}({10}^{I/10}+{10}^{N_{\mathrm{background}\_\mathrm{noise}}/10})+x\left(i\right)+\mathrm{\Δ}\left(i\right)\left[\mathrm{dBm}\right]$

P(i)＝max(Pmin，min(α·pathloss+P _{UE_recieved}(i)，Pmax)[dBm]

Calculate described transmitting power;

Wherein, I is adjacent area interference value, N _{Background_noise}For background noise value, x (i) are that adjustable parameter, α are that path loss penalty coefficient, pathloss are that circuit loss value, Pmin are that lower limit, the Pmax of transmitting power is the upper limit of transmitting power for user's target signal to noise ratio, Δ (i).

5. method as claimed in claim 4 is characterized in that, the acquisition mode of described adjacent area interference value comprises:

Described base station with the RSRP of the strongest adjacent area in the described measured value as described adjacent area interference value; Perhaps,

Described base station with the RSRP of the strongest Hong Qu in the described measured value as described adjacent area interference value; Perhaps,

Described base station according to the RSRQ of the local area in the described measured value and RSRP calculate disturb and, and should disturb and as described adjacent area interference value; Perhaps,

Described base station obtains the RSRQ of local area according to the channel quality indicator (CQI) that reports, and according to the RSRP of RSRQ that obtains and the local area in the measured value calculate disturb and, and should disturb and as described adjacent area interference value.

6. method as claimed in claim 4 is characterized in that, the acquisition mode of described circuit loss value comprises:

Described base station obtains described circuit loss value according to default empirical value; Perhaps,

Described circuit loss value is calculated according to the RSRP value of the local area in the described measured value and the current transmit power of described base station in described base station.

7. method as claimed in claim 4 is characterized in that, during a plurality of UE report in receiving the sub-district measured value, the acquisition mode of described adjacent area interference value and described circuit loss value comprises:

The adjacent area interference value that is disturbed maximum UE correspondence in the measured value that UE in this sub-district of described base station selection reports is as described adjacent area interference value, and the circuit loss value of choosing the UE correspondence of RSRP minimum in the measured value that the UE in this sub-district reports is described circuit loss value; Perhaps,

Described base station uses the adjacent area interference value of mean value correspondence of the measured value that a plurality of UE report as described adjacent area interference value, and to use the circuit loss value of the mean value correspondence of the measured value that a plurality of UE report be described circuit loss value; Perhaps,

The adjacent area interference value of the adjacent area interference value of the measured value correspondence that each UE reports as this UE used in described base station, and uses the circuit loss value of the circuit loss value of the measured value correspondence that each UE reports as this UE.

8. the method for claim 1 is characterized in that, described base station obtains interfere information, comprising:

Described base station uses idle time slot to obtain the interfere information of adjacent sub-district according to preset period.

9. the method for claim 1 is characterized in that, described base station obtains interfere information, also comprises before:

Described base station receives the power control command from adjacent base station, and carrying in the described power control command has UE to be subjected to the information of described base station interference under the described adjacent base station;

When described base station determines that according to described power control command needs are adjusted current transmit power, then carry out the operation that described base station obtains interfere information.

10. the method for claim 1 is characterized in that, current transmit power is adjusted according to described transmitting power in described base station, comprising:

When UE satisfied the default capabilities requirement in local area, described base station reduced the transmitting power of self, to avoid the interference to adjacent area UE.

11. the equipment of a power control is characterized in that, comprising:

Acquisition module is used to obtain interfere information;

Computing module is used for calculating transmitting power according to the described interfere information that described acquisition module obtains;

Adjusting module is used for adjusting current transmit power according to the described transmitting power that described computing module calculates.

12. equipment as claimed in claim 11 is characterized in that,

Described acquisition module specifically is used to dispose the measurement event and the corresponding parameters that are used for power control, and described measurement event and corresponding parameters are notified to user equipment (UE); Carry out local area channel quality measurement and adjacent area interferometry by described UE according to described measurement event and corresponding parameters, and when determining to satisfy the trigger condition of described measurement event according to measurement result, to described base station reporting measurement value;

Obtain described interfere information according to described measured value.

13. equipment as claimed in claim 12 is characterized in that, the corresponding parameters of described configuration comprises: disturb when being lower than default value the adjacent area of configuration can trigger the corresponding parameters of measuring reported event;

Described measured value comprises: the reference symbol received power RSRP of local area, the reference symbol quality of reception RSRQ of local area, and the RSRP of adjacent area.

14. equipment as claimed in claim 13 is characterized in that, described interfere information comprises a kind of or several arbitrarily in the following content: user's target signal to noise ratio, adjacent area interference value, circuit loss value;

Described computing module specifically is used for according to formula:

$P_{\mathrm{UE}\_\mathrm{recieved}}\left(i\right)=10{\log }_{10}({10}^{I/10}+{10}^{N_{\mathrm{background}\_\mathrm{noise}}/10})+x\left(i\right)+\mathrm{\Δ}\left(i\right)\left[\mathrm{dBm}\right]$

P(i)＝max(Pmin，min(α·pathloss+P _{UE_recieved}(i)，Pmax)[dBm]

Calculate described transmitting power;

Wherein, I is adjacent area interference value, N _{Background_noise}For background noise value, x (i) are that adjustable parameter, α are that path loss penalty coefficient, pathloss are that circuit loss value, Pmin are that lower limit, the Pmax of transmitting power is the upper limit of transmitting power for user's target signal to noise ratio, Δ (i).

15. equipment as claimed in claim 14 is characterized in that,

Described acquisition module also is used for RSRP with the strongest adjacent area of described measured value as described adjacent area interference value; Perhaps,

With the RSRP of the strongest Hong Qu in the described measured value as described adjacent area interference value; Perhaps,

According to the RSRQ of the local area in the described measured value and RSRP calculate disturb and, and should disturb and as described adjacent area interference value; Perhaps,

Obtain the RSRQ of local area according to the channel quality indicator (CQI) that reports, and according to the RSRP of RSRQ that obtains and the local area in the measured value calculate disturb and, and should disturb and as described adjacent area interference value.

16. equipment as claimed in claim 14 is characterized in that,

Described acquisition module also is used for obtaining described circuit loss value according to default empirical value; Perhaps,

Calculate described circuit loss value according to the RSRP value of the local area in the described measured value and the current transmit power of described base station.

17. equipment as claimed in claim 14 is characterized in that, during a plurality of UE report in receiving the sub-district measured value,

Described acquisition module, also be used for choosing adjacent area interference value that measured value that the UE in this sub-district reports disturbed maximum UE correspondence as described adjacent area interference value, and the circuit loss value of choosing the UE correspondence of RSRP minimum in the measured value that the UE in this sub-district reports is described circuit loss value; Perhaps,

The adjacent area interference value of mean value correspondence that uses the measured value that a plurality of UE report is as described adjacent area interference value, and to use the circuit loss value of the mean value correspondence of the measured value that a plurality of UE report be described circuit loss value; Perhaps,

Use the adjacent area interference value of the adjacent area interference value of the measured value correspondence that each UE reports, and use the circuit loss value of the circuit loss value of the measured value correspondence that each UE reports as this UE as this UE.

18. equipment as claimed in claim 11 is characterized in that,

Described acquisition module specifically is used for using idle time slot to obtain the interfere information of adjacent sub-district according to preset period.

19. equipment as claimed in claim 11 is characterized in that, also comprises:

Receiver module is used to receive the power control command from adjacent base station, and carrying in the described power control command has UE to be subjected to the information of described base station interference under the described adjacent base station;

Determination module is used for determining whether that according to described power control command needs adjust current transmit power, and when determining to adjust current transmit power, obtains interfere information by described acquisition module.

20. equipment as claimed in claim 11 is characterized in that,

Described adjusting module when specifically being used in local area UE and satisfying default capabilities and require, reduces the transmitting power of self, to avoid the interference to adjacent area UE.

21. the method for a power control is characterized in that, comprising:

Base station configuration is used for the measurement event and the corresponding parameters of power control, and described measurement event and corresponding parameters are notified to user equipment (UE);

Described UE carries out local area channel quality measurement and adjacent area interferometry according to described measurement event and corresponding parameters, and when determining to satisfy the trigger condition of described measurement event according to measurement result, to described base station reporting measurement value;

Described base station obtains described interfere information according to described measured value, and adjusts current transmit power according to described interfere information power.

22. method as claimed in claim 21 is characterized in that, described base station configuration corresponding parameters comprises: disturb when being lower than default value described base station configuration adjacent area can trigger the corresponding parameters of measuring reported event;

Described measured value comprises: the reference symbol received power RSRP of local area, the reference symbol quality of reception RSRQ of local area, and the RSRP of adjacent area.

23. method as claimed in claim 22 is characterized in that, adjusts current transmit power according to described interfere information power, comprising:

Transmitting power is calculated according to described interfere information in described base station;

Current transmit power is adjusted according to described transmitting power in described base station.

24. method as claimed in claim 23 is characterized in that, described interfere information comprises a kind of or several arbitrarily in the following content: user's target signal to noise ratio, adjacent area interference value, circuit loss value;

Transmitting power is calculated according to described interfere information in described base station, comprising:

Described base station is according to formula:

$P_{\mathrm{UE}\_\mathrm{recieved}}\left(i\right)=10{\log }_{10}({10}^{I/10}+{10}^{N_{\mathrm{background}\_\mathrm{noise}}/10})+x\left(i\right)+\mathrm{\Δ}\left(i\right)\left[\mathrm{dBm}\right]$

P(i)＝max(Pmin，min(α·pathloss+P _{UE_recieved}(i)，Pmax)[dBm]

Calculate described transmitting power;

Wherein, I is adjacent area interference value, N _{Background_noise}For background noise value, x (i) are that adjustable parameter, α are that path loss penalty coefficient, pathloss are that circuit loss value, Pmin are that lower limit, the Pmax of transmitting power is the upper limit of transmitting power for user's target signal to noise ratio, Δ (i).

25. method as claimed in claim 24 is characterized in that, the acquisition mode of described adjacent area interference value comprises:

Described base station with the RSRP of the strongest adjacent area in the described measured value as described adjacent area interference value; Perhaps,

Described base station with the RSRP of the strongest Hong Qu in the described measured value as described adjacent area interference value; Perhaps,

Described base station according to the RSRQ of the local area in the described measured value and RSRP calculate disturb and, and should disturb and as described adjacent area interference value; Perhaps,

Described base station obtains the RSRQ of local area according to the channel quality indicator (CQI) that reports, and according to the RSRP of RSRQ that obtains and the local area in the measured value calculate disturb and, and should disturb and as described adjacent area interference value;

The acquisition mode of described circuit loss value comprises:

Described base station obtains described circuit loss value according to default empirical value; Perhaps,

Described circuit loss value is calculated according to the RSRP value of the local area in the described measured value and the current transmit power of described base station in described base station;

During a plurality of UE report in receiving the sub-district measured value, the acquisition mode of described adjacent area interference value and described circuit loss value comprises:

The adjacent area interference value that is disturbed maximum UE correspondence in the measured value that UE in this sub-district of described base station selection reports is as described adjacent area interference value, and the circuit loss value of choosing the UE correspondence of RSRP minimum in the measured value that the UE in this sub-district reports is described circuit loss value; Perhaps,

Described base station uses the adjacent area interference value of mean value correspondence of the measured value that a plurality of UE report as described adjacent area interference value, and to use the circuit loss value of the mean value correspondence of the measured value that a plurality of UE report be described circuit loss value; Perhaps,

The adjacent area interference value of the adjacent area interference value of the measured value correspondence that each UE reports as this UE used in described base station, and uses the circuit loss value of the circuit loss value of the measured value correspondence that each UE reports as this UE.

26. method as claimed in claim 21 is characterized in that, described base station configuration is used for the measurement event of power control and triggers thresholding, also comprises before:

Described base station receives the power control command from adjacent base station, and carrying in the described power control command has UE to be subjected to the information of described base station interference under the described adjacent base station;

When described base station determines that according to described power control command needs are adjusted current transmit power, then carry out the operation that described base station configuration is used for the measurement event of power control and triggers thresholding.

27. method as claimed in claim 21 is characterized in that, adjusts current transmit power according to described interfere information power, comprising:

When UE satisfied the default capabilities requirement in local area, described base station reduced the transmitting power of self, to avoid the interference to adjacent area UE.

28. the equipment of a power control is characterized in that, comprising:

Configuration module is used to dispose the measurement event and the corresponding parameters that are used for power control;

Sending module is used for the described measurement event and the corresponding parameters of described configuration module configuration are notified to user equipment (UE); Carry out local area channel quality measurement and adjacent area interferometry by described UE according to described measurement event and corresponding parameters;

Receiver module is used for receiving the measured value that described UE reports to described base station when described UE determines to satisfy the trigger condition of described measurement event according to measurement result;

Acquisition module is used for obtaining described interfere information according to the described measured value that described receiver module receives;

Adjusting module is used for adjusting current transmit power according to the described interfere information power that described acquisition module obtains.

29. equipment as claimed in claim 28 is characterized in that, the corresponding parameters of described configuration comprises: disturb when being lower than default value the adjacent area of configuration can trigger the corresponding parameters of measuring reported event;

Described measured value comprises: the reference symbol received power RSRP of local area, the reference symbol quality of reception RSRQ of local area, and the RSRP of adjacent area.

30. equipment as claimed in claim 28 is characterized in that,

Described adjusting module specifically is used for calculating transmitting power according to described interfere information; And according to described transmitting power adjustment current transmit power.

31. equipment as claimed in claim 30 is characterized in that, described interfere information comprises a kind of or several arbitrarily in the following content: user's target signal to noise ratio, adjacent area interference value, circuit loss value;

Described adjusting module is further used for according to formula:

$P_{\mathrm{UE}\_\mathrm{recieved}}\left(i\right)=10{\log }_{10}({10}^{I/10}+{10}^{N_{\mathrm{background}\_\mathrm{noise}}/10})+x\left(i\right)+\mathrm{\Δ}\left(i\right)\left[\mathrm{dBm}\right]$

P(i)＝max(Pmin，min(α·pathloss+P _{UE_recieved}(i)，Pmax)[dBm]

Calculate described transmitting power;

Wherein, I is adjacent area interference value, N _{Background_noise}For background noise value, x (i) are that adjustable parameter, α are that path loss penalty coefficient, pathloss are that circuit loss value, Pmin are that lower limit, the Pmax of transmitting power is the upper limit of transmitting power for user's target signal to noise ratio, Δ (i).

32. equipment as claimed in claim 31 is characterized in that,

Described acquisition module also is used to obtain described adjacent area interference value, is specially: with the RSRP of the strongest adjacent area in the described measured value as described adjacent area interference value; Perhaps, with the RSRP of the strongest Hong Qu in the described measured value as described adjacent area interference value; Perhaps, according to the RSRQ of the local area in the described measured value and RSRP calculate disturb and, and should disturb and as described adjacent area interference value; Perhaps, obtain the RSRQ of local area according to the channel quality indicator (CQI) that reports, and according to the RSRP of RSRQ that obtains and the local area in the measured value calculate disturb and, and should disturb and as described adjacent area interference value;

Obtain described circuit loss value, be specially: obtain described circuit loss value according to default empirical value; Perhaps, calculate described circuit loss value according to the RSRP value of the local area in the described measured value and the current transmit power of described base station;

During a plurality of UE report in receiving the sub-district measured value, obtain described adjacent area interference value and described circuit loss value, be specially: choose disturbed maximum UE correspondence in the measured value that the UE in this sub-district reports the adjacent area interference value as described adjacent area interference value, and the circuit loss value of choosing the UE correspondence of RSRP minimum in the measured value that the UE in this sub-district reports is described circuit loss value; Perhaps, the adjacent area interference value of mean value correspondence that uses the measured value that a plurality of UE report is as described adjacent area interference value, and to use the circuit loss value of the mean value correspondence of the measured value that a plurality of UE report be described circuit loss value; Perhaps, use the adjacent area interference value of the adjacent area interference value of the measured value correspondence that each UE reports, and use the circuit loss value of the circuit loss value of the measured value correspondence that each UE reports as this UE as this UE.

33. equipment as claimed in claim 28 is characterized in that,

Described receiver module also is used to receive the power control command from adjacent base station, and carrying in the described power control command has UE to be subjected to the information of described base station interference under the described adjacent base station;

Described equipment also comprises:

Determination module is used for determining whether that according to described power control command needs adjust current transmit power, and when determining to adjust current transmit power, obtains interfere information by described acquisition module.

34. equipment as claimed in claim 28 is characterized in that,

Described adjusting module when specifically being used in local area UE and satisfying default capabilities and require, reduces the transmitting power of self, to avoid the interference to adjacent area UE.

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