CN101778463A - Home base station and transmitting power setting method thereof - Google Patents

Home base station and transmitting power setting method thereof Download PDF

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Publication number
CN101778463A
CN101778463A CN200910076540A CN200910076540A CN101778463A CN 101778463 A CN101778463 A CN 101778463A CN 200910076540 A CN200910076540 A CN 200910076540A CN 200910076540 A CN200910076540 A CN 200910076540A CN 101778463 A CN101778463 A CN 101778463A
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base stations
serving base
home enodeb
home
signal received
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CN101778463B (en
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李男
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China Mobile Communications Group Co Ltd
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China Mobile Communications Group Co Ltd
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Priority to PCT/CN2009/001560 priority patent/WO2010078713A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/38—TPC being performed in particular situations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/243—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account interferences
    • H04W52/244—Interferences in heterogeneous networks, e.g. among macro and femto or pico cells or other sector / system interference [OSI]

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses a home base station and a transmitting power setting method thereof, which are used for reducing inference of the home base station on a macro terminal and other home terminals. The transmitting power setting method of the home base station comprises the following steps that: the home base station receives a measuring result of non-service base station pilot frequency/reference signal received power; and the home base station refers to the received measuring result to set transmitting power. The invention does not modify a protocol and effectively reduces the interference of the home base station on the macro terminal and other home terminals.

Description

A kind of Home eNodeB and transmitting power setting method thereof
Technical field
The present invention relates to moving communicating field, relate in particular to a kind of Home eNodeB and transmitting power thereof technology is set.
Background technology
Home eNodeB (Home NodeB, HNB), also can be called femto base station (Femto Cell/FemtoNodeB), femto base station (Pico Cell/Pico NodeB) or the like, it is extremely low transmitting power communication base station towards indoor scene, the user can arbitrarily buy and independently install, usually be placed on the indoor desk or ground, for the domestic consumer provides the wireless access service.Generally speaking, the transmitting power of Home eNodeB is a constant relatively performance number, only its placement location change or near the deployment of macro base station just adjust when bigger variation takes place.User's demand to high-speed data service under indoor scene has been satisfied in the indoor covering that Home eNodeB has extended movable signal with lower cost, and various traditional fixed network services (for example broadband access network is professional and fixedly speech business) can comprehensively be provided.
Because it is random and uncertain that Home eNodeB is disposed, between Home eNodeB and the macro base station (for example BaseStation, NodeB, eNodeB are referred to as Macro NodeB) and inevitably exist interference between the Home eNodeB.For the ease of distinguishing, the subscriber equipment of access to family base station is called home terminal (Home User Equipment, Home UE), the subscriber equipment that inserts macro base station is called grand terminal (Macro User Equipment, Macro UE).Interference schematic diagram between the base station, as shown in Figure 1, mainly have following several interference types between Home eNodeB and the macro base station and between the Home eNodeB: Home eNodeB HNB1 disturbs grand terminal Macro UE, home terminal Home UE to disturb macro base station Macro NodeB, macro base station Macro NodeB to disturb home terminal Home UE, grand terminal Macro UE interference Home eNodeB HNB1, Home eNodeB HNB1 to disturb the home terminal (being called for short other home terminal), the home terminal Home UE that insert other Home eNodeB to disturb non-service Home eNodeB HNB2.As seen, how to reduce Home eNodeB grand terminal and the interference that other home terminal produces are become one of problem demanding prompt solution in the prior art.
Summary of the invention
The invention provides a kind of Home eNodeB and transmitting power setting method thereof, in order to reduce the interference of Home eNodeB to grand terminal and the generation of other home terminal.
The transmitting power setting method of Home eNodeB provided by the invention comprises:
The measurement result of non-serving base stations pilot tone/Reference Signal Received Power that Home eNodeB reception home terminal reports;
Home eNodeB is provided with transmitting power with reference to the measurement result that receives.
Home eNodeB provided by the invention comprises:
Receiving element is used to receive the measurement result of non-serving base stations pilot tone/Reference Signal Received Power that home terminal reports;
The power setting unit is used for reference to the measurement result that receives transmitting power being set.
Home eNodeB provided by the invention and transmitting power setting method thereof, the transmitting power of Home eNodeB no longer adopts constant relatively performance number, but effectively utilize home terminal to the measurement of non-serving base stations pilot tone/Reference Signal Received Power with report, the measurement result that Home eNodeB reports home terminal is as the reference frame that this base station transmitting power is set.The present invention need not agreement is made amendment, exploitativeness is strong, Home eNodeB is provided with the transmitting power of this base station with reference to non-serving base stations pilot tone/Reference Signal Received Power that home terminal reports, thereby effectively reduces the interference of Home eNodeB to grand terminal and the generation of other home terminal; The present invention can guarantee to improve the transmitting power of Home eNodeB under the prerequisite of control Home eNodeB to interference that other base station produces, and helps promoting the user experience of home terminal.
Description of drawings
Fig. 1 is the interference schematic diagram between the base station in the prior art;
Fig. 2 is the transmitting power setting method flow chart of Home eNodeB in the embodiment of the invention;
Fig. 3 realizes principle schematic in the embodiment of the invention one;
Fig. 4 is the transmitting power setting method flow chart of Home eNodeB in the embodiment of the invention one;
Fig. 5 is the transmitting power setting method flow chart of Home eNodeB in the embodiment of the invention two;
Fig. 6 is for being arranged on the transmitting power setting device block diagram in the Home eNodeB in the embodiment of the invention;
Fig. 7 is a kind of possibility structured flowchart of power setting unit in the embodiment of the invention;
Fig. 8 is a kind of possibility structured flowchart of first definite subelement in the embodiment of the invention;
Fig. 9 is that the another kind of power setting unit in the embodiment of the invention may structured flowchart.
Embodiment
The embodiment of the invention provides a kind of transmitting power setting method of Home eNodeB, as shown in Figure 2, comprises step:
The measurement result of non-serving base stations pilot tone/Reference Signal Received Power that the home terminal that S201, Home eNodeB reception are administered reports;
S202, Home eNodeB are provided with transmitting power with reference to the measurement result that receives.
In the embodiment of the invention, the transmitting power of Home eNodeB no longer adopts constant relatively performance number, but effectively utilize home terminal that Home eNodeB administers to the measurement of non-serving base stations pilot tone/Reference Signal Received Power with report, according to measurement result transmitting power is set, thereby has reduced the interference of Home eNodeB grand terminal and the generation of other home terminal.Home eNodeB described in the embodiment of the invention includes but not limited to HNB, Femto Cell, Femto NodeB, Pico Cell, Pico NodeB.
Below in conjunction with Figure of description the technical scheme that the embodiment of the invention provides is described in detail.
Embodiment one
The technical scheme that adopts in the present embodiment comprises: the measurement result of non-serving base stations pilot tone/Reference Signal Received Power that Home eNodeB reports according to home terminal, determine the distance between Home eNodeB and the non-serving base stations, and transmitting power is set with reference to the distance between Home eNodeB and the non-serving base stations.
At first, introduce the basic realization principle of present embodiment.For the distance between Home eNodeB and the macro base station, as shown in Figure 3, be the center of circle with the macro base station, the different distance thresholding of setting between Home eNodeB and the macro base station is that radius can obtain several concentric circless, thereby mark off first area, second area, the 3rd zone, or the like.The received signal to noise ratio computational methods of grand terminal are shown in formula [1]:
SIR MUE＝(P tx_MNB/PL MNB_MUE)/(P tx_HNB/PL HNB_MUE+N+I) [1]
Wherein, SIR MUEBe the received signal to noise ratio of grand terminal, P Tx_MNBBe the transmitting power of macro base station, PL MNB_MUEBe the path loss of macro base station to grand terminal, P Tx_HNBBe the transmitting power of Home eNodeB, PL HNB_MUEBe the path loss of Home eNodeB to grand terminal, N is the noise power of grand terminal, and I is the interference power of other base station to grand terminal.
Distance between family base station and macro base station is hour (for example Home eNodeB is placed on the first area in), because that macro base station and Home eNodeB arrive the distance of grand terminal is more approaching, makes PL HNB_MUEWith PL MNB_MUEMore approaching, in this case, because the transmitting power of macro base station is far longer than the transmitting power of Home eNodeB, it is less that the interference that Home eNodeB produces grand terminal causes the received signal to noise ratio of grand terminal to descend, and Home eNodeB can be provided with relatively large transmitting power; When the distance between family base station and the macro base station is big (for example Home eNodeB is placed in the 3rd zone), for the distance macro base station grand terminal nearer far still, PL apart from Home eNodeB HNB_MUEWith PL MNB_MUEBigger (the PL of difference MNB_MUE＞＞PL HNB_MUE), to be Home eNodeB be far longer than transmitting power between macro base station and the Home eNodeB to the path loss and the macro base station of grand terminal to the difference between the path loss of grand terminal difference, it is bigger that the interference that Home eNodeB produces this grand terminal causes the received signal to noise ratio of this grand terminal to descend, and Home eNodeB should be provided with less relatively transmitting power.In like manner, the distance between the family base station hour, Home eNodeB can be provided with relatively large transmitting power; When the distance between family base station and the macro base station was big, Home eNodeB should be provided with less relatively transmitting power.
Because the coverage of Home eNodeB is smaller, the distance between Home eNodeB and macro base station or other Home eNodeB can be approximate definite by home terminal and the distance between the non-serving base stations that Home eNodeB is administered.As shown in Figure 4, the transmitting power setting method of the Home eNodeB that embodiment one provides comprises the steps:
The measurement result of non-serving base stations pilot tone/Reference Signal Received Power that S401, Home eNodeB reception home terminal report;
In the prior art standard, home terminal switches for the sub-district or minizone gravity treatment meeting is carried out the measurement of non-serving base stations pilot tone/Reference Signal Received Power and reported; Wherein, the home terminal that Home eNodeB is administered is generally a plurality of, and the non-serving base stations of each home terminal measurement generally also is a plurality of simultaneously, comprises macro base station, perhaps other Home eNodeB, perhaps macro base station and other Home eNodeB; Described measurement result comprises each home terminal that Home eNodeB administers measured value to non-serving base stations pilot tone/Reference Signal Received Power.
The measurement result that S402, Home eNodeB basis receive is determined the distance between Home eNodeB and the non-serving base stations, specifically comprises the steps:
A, from measurement result, extract all measured values respectively to each non-serving base stations pilot tone/Reference Signal Received Power;
B, all measured values of each non-serving base stations pilot tone/Reference Signal Received Power are merged to handle obtain merging effective value;
C, according to the merging effective value of each non-serving base stations pilot tone/Reference Signal Received Power and the reference transmit power of this non-serving base stations, determine that Home eNodeB arrives the path loss of each non-serving base stations;
D, according to Home eNodeB to the path loss of each non-serving base stations, determine the distance between Home eNodeB and each non-serving base stations.
S403, Home eNodeB are provided with transmitting power with reference to Home eNodeB of determining and the distance between the non-serving base stations;
Home eNodeB can be taken into account the factors such as covering requirement of considering this family base station transmitting power is set with reference to Home eNodeB of determining and the distance between the non-serving base stations.
Preferable, in S402, Home eNodeB is at the measured value of each home terminal to each non-serving base stations pilot tone/Reference Signal Received Power, in order to reduce the influence of small scale decline to the instantaneous measurement value, can carry out smoothing processing to measured value, the smoothing processing method that each measured value of each non-serving base stations pilot tone/Reference Signal Received Power is adopted is shown in formula [2]:
PCCPCH RSCP ( n ) ‾ = α · PCCPCH RSCP ( n - 1 ) ‾ + ( 1 - α ) · PCCPCH RSCP ( n ) - - - [ 2 ]
Wherein,
Figure G2009100765407D0000052
Be the level and smooth effective value that when last time measured value carry out smoothing processing after obtain of arbitrary home terminal to arbitrary non-serving base stations pilot tone/Reference Signal Received Power;
Figure G2009100765407D0000053
Carry out the level and smooth effective value that obtains after the smoothing processing for a preceding measured value to this pilot tone/Reference Signal Received Power; PCCPCH RSCP(n) be the last time measured value of this pilot tone/Reference Signal Received Power; Weighted factor and 0≤α≤1 of α for being provided with.
Home eNodeB can take modes such as high specific merging, equal gain combining or selectivity merging to merge processing to all measured values of each non-serving base stations pilot tone/Reference Signal Received Power, the merging processing method of taking is shown in formula [3]:
PCCPCH RSCP ‾ = Σ i = 1 N α i · PCCPCH RSCP ( i ) - - - [ 3 ]
Wherein, Merge the merging effective value that obtains after the processing for all measured values to arbitrary non-serving base stations pilot tone/Reference Signal Received Power; N is the home terminal quantity that reports the measured value of this non-serving base stations pilot tone/Reference Signal Received Power; I is an i home terminal, PCCPCH RSCP(i) be the measured value of this non-serving base stations pilot tone/Reference Signal Received Power of reporting of i home terminal; α iIt is the weighted factor of i home terminal.If the α of i home terminal iEqual the signal to noise ratio of i home terminal pilot tone/reference signal, then take high specific to merge mode, if the α of all home terminals iBe 1, then take the equal gain combining mode, α iAlso can get other value.It is to be noted, Home eNodeB is before merging processing, if at the measured value of each home terminal, carry out smoothing processing according to formula [2] and obtained level and smooth effective value, then PCCPCH in the formula [3] each non-serving base stations pilot tone/Reference Signal Received Power RSCP(i) carry out the level and smooth effective value that obtains after the smoothing processing for the measured value of this non-serving base stations pilot tone/Reference Signal Received Power that i home terminal reported.
Home eNodeB is according to the merging effective value of each non-serving base stations pilot tone/Reference Signal Received Power and the reference transmit power of this non-serving base stations, can calculate Home eNodeB to the path loss of each non-serving base stations, according to path loss and utilize propagation model can determine between the two distance.Because it is a plurality of that non-serving base stations is generally, so the distance between Home eNodeB and the non-serving base stations generally comprises a plurality of distances between Home eNodeB and each non-serving base stations.
Described propagation model can be selected the free space propagation model, perhaps for example hata model, cost231 model, vehicle-mounted model etc. of other propagation model.Path loss generally is the power function of distance, and in the free space propagation model, path loss is directly proportional with 2 powers of distance; In the cellular cell of city, approximate 2.7～3.5 powers that are proportional to distance of path loss; Approximate 1.6～1.8 powers that are proportional to distance of sighting distance straight line path loss in building; Approximate 3～5 powers that are proportional to distance of the path loss that on wave path, has the common building thing to stop; Approximate 4～6 powers that are proportional to distance of the path loss that on wave path, has high-lager building to stop.Described propagation model can be selected to determine by ray tracing method, can also select suitable propagation model according to the actual deployment scene of Home eNodeB.
In S403, if non-serving base stations comprises a plurality of, then at a plurality of distances between the Home eNodeB of determining and each non-serving base stations, general with minimum range as the reference frame that transmitting power is set, promptly with reference to the minimum range between Home eNodeB and each non-serving base stations transmitting power is set, concrete method to set up is shown in formula [4]:
P tx＝I max+Pathloss+ACIR-ΔP [4]
Wherein, P TxTransmitting power for Home eNodeB; I MaxFor the maximum of the non-serving base stations of minimum range correspondence allows interference power; Pathloss is the path loss of determining according to minimum range, and is concrete, can and utilize the propagation model of selecting among the S302 to determine path loss according to minimum range; ACIR is the adjacent-channel interference power ratio between the Home eNodeB non-serving base stations corresponding with minimum range, determines that than (ACLR) and adjacent-channel selectivity parameter (ACS) if frequency is identical, then the ACIR value is 0 by the side channel leakage power; The interference power adjusted value of Δ P for being provided with, Δ P can be set to 0.
Preferable, Home eNodeB is when being provided with transmitting power, and (Channel Quality Indicator, CQI), wherein CQI comprises recommendation modulation system (RMF) and recommends transmission block size (RTBS) in the channel quality indication that reports with reference to home terminal simultaneously.Generally speaking, when CQI is preferable, can suitably reduce the transmitting power of Home eNodeB, when CQI is relatively poor, can suitably improve the transmitting power of Home eNodeB.
In the present embodiment, Home eNodeB has effectively utilized home terminal to the measurement of non-serving base stations pilot tone/Reference Signal Received Power with report, because the coverage of Home eNodeB is smaller, can the distance between home terminal and the non-serving base stations is approximate as the distance between Home eNodeB and the non-serving base stations, the measurement result that reports according to home terminal is determined the distance between Home eNodeB and the non-serving base stations, and transmitting power is set, thereby effectively reduce the interference that Home eNodeB produces grand terminal and other home terminal with reference to the distance between this Home eNodeB and the non-serving base stations.
Embodiment two
The technical scheme that adopts in the present embodiment comprises: the measurement result of non-serving base stations pilot tone/Reference Signal Received Power that Home eNodeB reports according to home terminal, determine the path loss of Home eNodeB, and to the path loss of non-serving base stations transmitting power is set with reference to Home eNodeB to non-serving base stations.
Because the coverage of Home eNodeB is smaller, Home eNodeB can be approximate definite to the path loss of non-serving base stations by the home terminal that Home eNodeB is administered to the path loss of macro base station or other Home eNodeB.As shown in Figure 5, the transmitting power setting method of the Home eNodeB that embodiment two provides comprises the steps:
The measurement result of non-serving base stations pilot tone/Reference Signal Received Power that S501, Home eNodeB reception home terminal report;
S502, Home eNodeB are determined the path loss of Home eNodeB to non-serving base stations according to the measurement result that receives, and specifically comprise the steps:
A, from measurement result, extract all measured values respectively to each non-serving base stations pilot tone/Reference Signal Received Power;
B, all measured values of each non-serving base stations pilot tone/Reference Signal Received Power are merged to handle obtain merging effective value;
C, according to the merging effective value of each non-serving base stations pilot tone/Reference Signal Received Power and the reference transmit power of this non-serving base stations, determine that Home eNodeB arrives the path loss of each non-serving base stations.
The Home eNodeB that S503, Home eNodeB reference are determined is provided with transmitting power to the path loss of non-serving base stations;
Home eNodeB can be taken into account the factors such as covering requirement of considering this family base station transmitting power is set with reference to the path loss of the Home eNodeB of determining to non-serving base stations.
Preferable, in S502, Home eNodeB is at the measured value of each home terminal to each non-serving base stations pilot tone/Reference Signal Received Power, in order to reduce the influence of small scale decline to the instantaneous measurement value, can carry out smoothing processing to measured value, same shown in formula [2] to the smoothing processing method that each measured value of each non-serving base stations pilot tone/Reference Signal Received Power adopts, repeat no more.
Home eNodeB can take modes such as high specific merging, equal gain combining or selectivity merging to merge processing to all measured values of each non-serving base stations pilot tone/Reference Signal Received Power, the merging processing method of taking is same shown in formula [3], repeats no more.
Home eNodeB is according to the merging effective value of each non-serving base stations pilot tone/Reference Signal Received Power and the reference transmit power of this non-serving base stations, can calculate the path loss of Home eNodeB to each non-serving base stations, because it is a plurality of that non-serving base stations is generally, so Home eNodeB generally comprises a plurality of path losses that Home eNodeB arrives each non-serving base stations to the path loss of non-serving base stations.
In S503, if non-serving base stations comprises a plurality of, then at a plurality of path losses of the Home eNodeB of determining to each non-serving base stations, general with the minimal path loss as the reference frame that transmitting power is set, the path loss that sets in advance of inquiry and the corresponding relation of transmitting power are provided with the transmitting power of Home eNodeB according to Query Result.The corresponding relation of path loss and transmitting power can adopt the mode of corresponding relation tabulation to provide, and also can adopt the mode of functional relation to provide.
In the present embodiment, Home eNodeB has effectively utilized home terminal to the measurement of non-serving base stations pilot tone/Reference Signal Received Power with report, because Home eNodeB side coverage is smaller, can home terminal is approximate as the path loss of Home eNodeB to non-serving base stations to the path loss of non-serving base stations, determine the path loss of Home eNodeB according to the measurement result that home terminal reports to non-serving base stations, and to the path loss of non-serving base stations transmitting power is set, thereby effectively reduce the interference that Home eNodeB produces grand terminal and other home terminal with reference to this Home eNodeB.
Based on same technical conceive, the embodiment of the invention provides a kind of transmitting power setting device that is arranged in the Home eNodeB, and as shown in Figure 6, this transmitting power setting device comprises:
Receiving element 601 is used to receive the measurement result of non-serving base stations pilot tone/Reference Signal Received Power that home terminal reports;
Wherein, measurement result comprises each home terminal that Home eNodeB administers measured value to non-serving base stations pilot tone/Reference Signal Received Power;
Power setting unit 602 is used for reference to the measurement result that receives transmitting power being set.
As shown in Figure 7, a kind of possibility structure of power setting unit 602 comprises:
First determines subelement 701, is used for determining distance between Home eNodeB and the non-serving base stations according to the measurement result that receives;
First is provided with subelement 702, is used for reference to the distance between Home eNodeB and the non-serving base stations transmitting power being set.
First determines a kind of possibility structure of subelement 701, as shown in Figure 8, comprising:
Extraction module 801 is used for extracting all measured values to each non-serving base stations pilot tone/Reference Signal Received Power respectively from measurement result;
Merge processing module 802, be used for all measured values to each non-serving base stations pilot tone/Reference Signal Received Power and merge to handle and obtain merging effective value;
Path loss determination module 803 is used for according to the merging effective value of each non-serving base stations pilot tone/Reference Signal Received Power and the reference transmit power of this non-serving base stations, determines that Home eNodeB arrives the path loss of each non-serving base stations;
Apart from determination module 804, be used for determining the distance between Home eNodeB and each non-serving base stations according to the path loss of Home eNodeB to each non-serving base stations.
If non-serving base stations comprises a plurality of, then first subelement 702 is set transmitting power is set with reference to the minimum range between Home eNodeB and each non-serving base stations.
As shown in Figure 9, the another kind of power setting unit 602 possibility structure comprises:
Second determines subelement 901, is used for determining the path loss of Home eNodeB to non-serving base stations according to the measurement result that receives;
Second is provided with subelement 902, is used for to the path loss of non-serving base stations transmitting power being set with reference to Home eNodeB.
If non-serving base stations comprises a plurality of, then second subelement 902 is set to the minimal path loss of each non-serving base stations transmitting power is set with reference to Home eNodeB.
Preferable, the power setting unit 602 in the transmitting power setting device also is used for when transmitting power is set, simultaneously the CQI that reports with reference to home terminal.
Home eNodeB that the embodiment of the invention provides and transmitting power setting method thereof, the transmitting power of Home eNodeB no longer adopts constant relatively performance number, but effectively utilizing home terminal to the measurement of non-serving base stations pilot tone/Reference Signal Received Power with report, Home eNodeB is provided with transmitting power with reference to the measurement result that home terminal reports;
Home eNodeB that the embodiment of the invention provides and transmitting power setting method thereof, need not agreement is made amendment, exploitativeness is strong, when being set, transmitting power considered non-serving base stations pilot tone/Reference Signal Received Power that home terminal reports, thereby effectively reduce the interference of Home eNodeB to grand terminal and the generation of other home terminal, the CQI that when transmitting power is set, can also report simultaneously with reference to home terminal, thus the accuracy of set transmitting power promoted;
Home eNodeB that the embodiment of the invention provides and transmitting power setting method thereof can guarantee to improve the transmitting power of Home eNodeB under the prerequisite of control Home eNodeB to interference that other base station produces, and help promoting the user experience of home terminal.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims (22)

1. the transmitting power setting method of a Home eNodeB is characterized in that, comprising:
The measurement result of non-serving base stations pilot tone/Reference Signal Received Power that Home eNodeB reception home terminal reports;
Home eNodeB is provided with transmitting power with reference to the measurement result that receives.
2. the method for claim 1, it is characterized in that, described non-serving base stations comprises macro base station and/or other Home eNodeB, and described measurement result comprises each home terminal that described Home eNodeB administers measured value to non-serving base stations pilot tone/Reference Signal Received Power.
3. method as claimed in claim 2 is characterized in that, described Home eNodeB is provided with transmitting power with reference to the measurement result that receives, and specifically comprises:
Determine distance between Home eNodeB and the non-serving base stations according to the measurement result that receives; And
With reference to the distance between described Home eNodeB and the non-serving base stations transmitting power is set.
4. method as claimed in claim 3 is characterized in that, the measurement result that described basis receives is determined the distance between Home eNodeB and the non-serving base stations, specifically comprises:
From described measurement result, extract all measured values respectively to each non-serving base stations pilot tone/Reference Signal Received Power;
All measured values of each non-serving base stations pilot tone/Reference Signal Received Power are merged to handle obtain merging effective value;
According to the merging effective value of each non-serving base stations pilot tone/Reference Signal Received Power and the reference transmit power of this non-serving base stations, determine that Home eNodeB arrives the path loss of each non-serving base stations;
According to the path loss of Home eNodeB, determine the distance between Home eNodeB and each non-serving base stations to each non-serving base stations.
5. method as claimed in claim 4 is characterized in that described non-serving base stations comprises a plurality of, and with reference to the minimum range between Home eNodeB and each non-serving base stations transmitting power is set.
6. method as claimed in claim 5 is characterized in that, with reference to the minimum range between Home eNodeB and each non-serving base stations transmitting power is set and realizes by following formula:
P tx＝I max+Pathloss+ACIR-ΔP
Wherein, P TxTransmitting power for Home eNodeB; I MaxFor the maximum of the non-serving base stations of described minimum range correspondence allows interference power; Pathloss is the path loss of determining according to described minimum range; ACIR is the adjacent-channel interference power ratio between the Home eNodeB non-serving base stations corresponding with described minimum range; The interference power adjusted value of Δ P for being provided with.
7. method as claimed in claim 2 is characterized in that, the measurement result that described reference receives is provided with transmitting power, specifically comprises:
Determine the path loss of Home eNodeB according to the measurement result that receives to non-serving base stations; And
The described Home eNodeB of reference is provided with transmitting power to the path loss of non-serving base stations.
8. method as claimed in claim 7 is characterized in that, the measurement result that described basis receives is determined the path loss of Home eNodeB to non-serving base stations, specifically comprises:
From described measurement result, extract all measured values respectively to each non-serving base stations pilot tone/Reference Signal Received Power;
All measured values of each non-serving base stations pilot tone/Reference Signal Received Power are merged to handle obtain merging effective value;
According to the merging effective value of each non-serving base stations pilot tone/Reference Signal Received Power and the reference transmit power of this non-serving base stations, determine that Home eNodeB arrives the path loss of each non-serving base stations.
9. method as claimed in claim 8 is characterized in that described non-serving base stations comprises a plurality of, and to the minimal path loss of each non-serving base stations transmitting power is set with reference to Home eNodeB.
10. method as claimed in claim 9 is characterized in that, describedly to the minimal path loss of each non-serving base stations transmitting power is set with reference to Home eNodeB, specifically comprises:
According to the minimal path loss of Home eNodeB to each non-serving base stations, inquire about the path loss of setting and the corresponding relation of transmitting power, the transmitting power of Home eNodeB is set according to Query Result.
11., it is characterized in that described all measured values to each non-serving base stations pilot tone/Reference Signal Received Power merge to handle and obtain merging effective value and realize by following formula as claim 4 or 8 described methods:
PCCPCH RSCP ‾ = Σ i = 1 N α i . PCCPCH RSCP ( i )
Wherein,
Figure F2009100765407C0000032
Merge the merging effective value that obtains after the processing for all measured values to arbitrary non-serving base stations pilot tone/Reference Signal Received Power; N is the home terminal quantity that reports the measured value of described non-serving base stations pilot tone/Reference Signal Received Power; I is an i home terminal, PCCPCH RSCP(i) be the measured value of described non-serving base stations pilot tone/Reference Signal Received Power of reporting of i home terminal, α iIt is the weighted factor of i home terminal.
12. method as claimed in claim 11 is characterized in that, described α iBe the signal to noise ratio of i home terminal pilot tone/reference signal, the perhaps α of all home terminals iBe 1.
13. as claim 4 or 8 described methods, it is characterized in that, before carrying out described merging processing, also comprise:
Each measured value to each non-serving base stations pilot tone/Reference Signal Received Power carries out smoothing processing.
14. method as claimed in claim 13 is characterized in that, described each measured value to each non-serving base stations pilot tone/Reference Signal Received Power carries out smoothing processing to be realized by following formula:
PCCPCH RSCP ( n ) ‾ = α . PCCPCH RSCP ( n - 1 ) ‾ + ( 1 - α ) . PCCPCH RSCP ( n )
Wherein, Be the level and smooth effective value that when last time measured value carry out smoothing processing after obtain of arbitrary home terminal to arbitrary non-serving base stations pilot tone/Reference Signal Received Power; Carry out the level and smooth effective value that obtains after the smoothing processing for a preceding measured value to described pilot tone/Reference Signal Received Power; PCCPCH RSCP(n) be the last time measured value of described pilot tone/Reference Signal Received Power; Weighted factor and 0≤α≤1 of α for being provided with.
15. the method for claim 1 is characterized in that, also comprises:
Described Home eNodeB when transmitting power is set, the channel quality indicator (CQI) that reports with reference to home terminal simultaneously.
16. a Home eNodeB is characterized in that, comprising:
Receiving element is used to receive the measurement result of non-serving base stations pilot tone/Reference Signal Received Power that home terminal reports;
The power setting unit is used for reference to the measurement result that receives transmitting power being set.
17. Home eNodeB as claimed in claim 16 is characterized in that, described measurement result comprises each home terminal that described Home eNodeB administers measured value to non-serving base stations pilot tone/Reference Signal Received Power, and described power setting unit comprises:
First determines subelement, is used for determining distance between Home eNodeB and the non-serving base stations according to the measurement result that receives;
First is provided with subelement, is used for reference to the distance between described Home eNodeB and the non-serving base stations transmitting power being set.
18. Home eNodeB as claimed in claim 17 is characterized in that, described first determines that subelement comprises:
Extraction module is used for extracting all measured values to each non-serving base stations pilot tone/Reference Signal Received Power respectively from described measurement result;
Merge processing module, be used for all measured values to each non-serving base stations pilot tone/Reference Signal Received Power and merge to handle and obtain merging effective value;
The path loss determination module is used for according to the merging effective value of each non-serving base stations pilot tone/Reference Signal Received Power and the reference transmit power of this non-serving base stations, determines that Home eNodeB arrives the path loss of each non-serving base stations;
Apart from determination module, be used for determining the distance between Home eNodeB and each non-serving base stations according to the path loss of Home eNodeB to each non-serving base stations.
19. Home eNodeB as claimed in claim 18 is characterized in that, described non-serving base stations comprises a plurality of, and described first is provided with subelement and with reference to the minimum range between Home eNodeB and each non-serving base stations transmitting power is set.
20. Home eNodeB as claimed in claim 16 is characterized in that, described measurement result comprises each home terminal that described Home eNodeB administers measured value to non-serving base stations pilot tone/Reference Signal Received Power, and described power setting unit comprises:
Second determines subelement, is used for determining the path loss of Home eNodeB to non-serving base stations according to the measurement result that receives;
Second is provided with subelement, is used for to the path loss of non-serving base stations transmitting power being set with reference to described Home eNodeB.
21. Home eNodeB as claimed in claim 20 is characterized in that, described non-serving base stations comprises a plurality of, and described second is provided with subelement and to the minimal path loss of each non-serving base stations transmitting power is set with reference to Home eNodeB.
22. Home eNodeB as claimed in claim 16 is characterized in that, described power setting unit also is used for when transmitting power is set, simultaneously the channel quality indicator (CQI) that reports with reference to home terminal.
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