CN102625330A - Channel status indication measurement method - Google Patents

Channel status indication measurement method Download PDF

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Publication number
CN102625330A
CN102625330A CN2011100360925A CN201110036092A CN102625330A CN 102625330 A CN102625330 A CN 102625330A CN 2011100360925 A CN2011100360925 A CN 2011100360925A CN 201110036092 A CN201110036092 A CN 201110036092A CN 102625330 A CN102625330 A CN 102625330A
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China
Prior art keywords
base station
macro base
measurement resource
limited measurement
absf
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CN2011100360925A
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Chinese (zh)
Inventor
付景兴
孙程君
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Beijing Samsung Telecommunications Technology Research Co Ltd
Samsung Electronics Co Ltd
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Beijing Samsung Telecommunications Technology Research Co Ltd
Samsung Electronics Co Ltd
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Application filed by Beijing Samsung Telecommunications Technology Research Co Ltd, Samsung Electronics Co Ltd filed Critical Beijing Samsung Telecommunications Technology Research Co Ltd
Priority to CN2011100360925A priority Critical patent/CN102625330A/en
Priority to KR1020110111321A priority patent/KR20120049134A/en
Priority to US13/291,616 priority patent/US20120113850A1/en
Priority to PCT/KR2011/008465 priority patent/WO2012064085A2/en
Publication of CN102625330A publication Critical patent/CN102625330A/en
Pending legal-status Critical Current

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Abstract

The invention provides a channel status indication measurement method. The method comprises the following steps: (a) a Macro Node B station terminal determines a format of limited measured resource used for carrying out CSI measurement; (b) the Macro Node B station terminal reports CSI measured on the limited measured resource to a Macro Node B such that the Macro Node B schedules data and transmits resource for the Macro Node B station terminal on the limited measured resource according to the CSI reported by the Macro Node B station terminal. By employing the channel status indication measurement method, the reasonable scheduling and the effective transmission of the data resource are realized.

Description

Channel status indication measurement method
Technical field
The present invention relates to wireless communication field, particularly channel status indication (CSI) method of measurement.
Background technology
In 3GPP, the different capacity node has caused great concern with covering the heterogeneous network system (Hetnet:Heterogeneous Network) that forms as a kind of remarkable elevator system throughput and the technology that improves the network whole efficiency in the LTE/LTE-A standard at present.Also set up the work problem (Work Item) that the heterogeneous network interference coordination strengthens (Enhanced Inter-cell Interference Coordination for HetNet is called for short eICICfor HetNet) in March, 2010.
It is a kind of technology that significantly improves throughput of system and network whole efficiency that the heterogeneous network interference coordination strengthens.Wherein, so-called heterogeneous network is meant that low power nodes (LPN:Low Power Node) cloth is placed in macro base station (the Macro Node B) overlay area, forms with the heterogeneous system that covers different nodes.Here, LPN comprises Microcell node (Pico Node B) and Home eNodeB node (Home Node B) etc. at least.
In heterogeneous network, a very important problem is exactly with the interference between each node that covers, especially since the macro base station transmitting power than the interference of the big a lot of macro base stations that cause of transmitting power of LPN to the descending reception of boundary user among the LPN; In addition, insert under user's group (CSG:Closed Subscriber Group) scene in family's base stations control, the emission of Home eNodeB also can produce very big interference near macro base station user.
In the discussion of present 3GPP, a lot of disturbance coordination methods has been proposed, for example division of resources and power control etc.Wherein, A kind of important disturbance coordination method is the interference coordination of time domain; It is mainly used in avoids macro base station on identical subframe, to send the interference that data caused simultaneously with LPN; Be specially: limit one of them node and on some subframe, send data, so that reduce to of the interference of another one node such as the user that LPN served such as macro base station.
Under macro base station-Home eNodeB scene, can access group (non-CSG) macro base station subscriber equipment can receive very large interference during near number of C SG Home eNodeB when non-, in this case, the macro base station user is receiving control information and data correctly.In order to address this problem, the interference coordination that has proposed time domain strengthens (eICIC) method.Wherein, The eICIC method of time domain refers to Home eNodeB and produces the very little subframe (ABSF:Almost Blank Sub-frame) of some interference through some special scheduling; Then; Macro base station user's control information and data only can be scheduled in those and disturb among the very little ABSF, guarantee macro base station user's the control information and the correct reception of data with this, and are specifically as shown in Figure 1.Similarly, when macro base station can be to LPN, when causing larger interference such as the user of Microcell node etc., the eICIC method of above-mentioned time domain can also be applied in the macro base station, and is specifically as shown in Figure 2.In Fig. 2, macro base station is only in subframe 0,2, sends data on 5,8 and 9, and in subframe 1,3, do not send data on 4,6 and 7, and promptly subframe 1,3, and 4,6 and 7 is ABSF.Like this, the Microcell node just can be the user on Microcell border scheduling in subframe 1,3, transmitting downlink data on 4,6 and 7, thus avoided the interference of macro base station for the Microcell boundary user.
Under the situation of macro base station and Home eNodeB coexistence, because the macro base station terminal does not allow access to family base station, when the macro base station terminal was in the coverage of Home eNodeB, Home eNodeB was very serious to the interference at macro base station terminal.And the eICIC method through time domain; Just Home eNodeB produces and disturbs very little ABSF; Make way for the very little ABSF of interference that near the macro base station terminal of Home eNodeB uses Home eNodeB to produce; Guarantee still can work when the macro base station terminal is near near Home eNodeB, reduce the interference of Home eNodeB the macro base station terminal.But the eICIC method of this time domain needs the macro base station terminal when carrying out the CSI measurement, knows and disturbs little ABSF so that CSI measures, and also needs macro base station to know and disturbs little ABSF so that scheduling.
But; Because the decision of 3GPP standardization does not at present define the interface (X2 that is used to transmit the ABSF resource between macro base station and Home eNodeB; S1), thereby Home eNodeB can't the signaling through X2 or S1 structure give macro base station with the ABSF resource notification of this Home eNodeB, so; Macro base station also just can't be told the ABSF resource of Home eNodeB to the macro base station terminal through signaling, and is concrete like Fig. 3 pictute.Because the ABSF resource of Home eNodeB can't be known in the macro base station terminal, therefore, it can't carry out channel status indication (CSI) and measure on the less ABSF resource of interference.Correspondingly, when the macro base station terminal was in the coverage of Home eNodeB, macro base station also just can't improve macro base station user's data transmission performance with macro base station user scheduling on the ABSF resource of disturbing less Home eNodeB, avoid the interference of Home eNodeB.Therefore be necessary to provide the ABSF resource that some solutions make the macro base station user to know to close on Home eNodeB, measure thereby on the ABSF resource of disturbing less Home eNodeB, be CSI.The ABSF resource of the Home eNodeB that some solutions make that macro base station knows that the macro base station terminal is closed on to be arranged in addition, thereby this macro base station terminal is dispatched on the ABSF of Home eNodeB resource.
Summary of the invention
The invention provides channel status indication measurement method, so that realize effective transmission of reasonably scheduling and data resource.
Technical scheme provided by the invention comprises:
A kind of channel status indication measurement method comprises:
A, the form of the limited measurement resource that CSI measures is confirmed to be used to carry out in the macro base station terminal;
B, the CSI that said macro base station terminal will be measured on said limited measurement resource reports said macro base station, on said limited measurement resource, is macro base station terminal scheduling data transmission resources according to the CSI of macro base station terminal to report for said macro base station.
Can find out by above technical scheme; Among the present invention; The form of the limited measurement resource that CSI measures is confirmed to be used to carry out in the macro base station terminal; And the CSI that the macro base station terminal will be measured on said limited measurement resource reports macro base station, on said limited measurement resource, is macro base station terminal scheduling data transmission resources according to the CSI of macro base station terminal to report for macro base station.Can find out; In the inventive method; The limited measurement resource format that CSI measures can be confirmed to be used to carry out in macro base station terminal self; Make macro base station dispatch the macro base station subscriber equipment on the limited measurement resource comparatively accurately, thereby reduced LPN, realize effective transmission of reasonably scheduling and data resource such as the phase mutual interference between Home eNodeB and the macro base station.
Description of drawings
Fig. 1 is the main sketch map that disturbs under macro base station-Home eNodeB scene;
Fig. 2 is the main sketch map that disturbs under macro base station-Pico base station scene;
Fig. 3 is an interface sketch map between macro base station and the Home eNodeB;
The flow chart that Fig. 4 provides for the embodiment of the invention;
Fig. 5 is provided with sketch map for the ABSF of the Home eNodeB that the embodiment of the invention provides;
The ABSF distribution mode method to set up sketch map relevant of the Home eNodeB that Fig. 6 provides for the embodiment of the invention with physical layer ID;
Fig. 7 reports the flow chart of ABSF form for the high-level signaling that utilizes that the embodiment of the invention provides;
Fig. 8 reports the sketch map of ABSF form for the physical layer of utilizing that the embodiment of the invention provides;
The CSI that Fig. 9 provides for the embodiment of the invention reports sketch map constantly;
The macro base station terminal restricted resource format sketch map that Figure 10 provides for the embodiment of the invention;
The ABSF pattern transfer process figure that Figure 11 provides for the embodiment of the invention;
The macro base station that Figure 12 provides for the embodiment of the invention 2 confirms to be used to dispatch the flow chart of the sub-frame resources at said macro base station terminal;
The macro base station terminal restricted resource format flow path switch diagram intention that Figure 13 provides for the embodiment of the invention.
Embodiment
Method provided by the invention mainly comprises: the form of the limited measurement resource that CSI measures is confirmed to be used to carry out in the macro base station terminal; And the CSI that said macro base station terminal will be measured on said limited measurement resource reports said macro base station, on said limited measurement resource, is macro base station terminal scheduling data transmission resources according to the CSI of macro base station terminal to report for said macro base station.With macro base station and Home eNodeB coexistence is example; Then according to this method; The limited measurement resource format of interfered cell can be identified in the macro base station terminal; And,, thereby reduce the interference of Home eNodeB to the macro base station subscriber equipment so that macro base station lets this terminal disturb little transmitted over resources data at these through scheduling according to this limited measurement resource format measurement CSI.
In order to make the object of the invention, technical scheme and advantage clearer, describe the present invention below in conjunction with accompanying drawing and specific embodiment.
Embodiment 1:
Referring to Fig. 4, the flow chart that Fig. 4 provides for the embodiment of the invention 1.This flow process is an example with the scene of the coexistence of the Home eNodeB among macro base station and the LPN, and other situation principles are similar, as shown in Figure 4, and this flow process can may further comprise the steps:
Step 401, macro base station terminal confirm to be used to carry out the form of the limited measurement resource that CSI measures.
Here, limited measurement resource format is the corresponding macro base station sub-frame resources form of ABSF form that disposes with Home eNodeB.
Step 402, the limited measurement resource format that step 401 is confirmed at the macro base station terminal reports macro base station.
Step 403, the CSI that the macro base station terminal will measure on said limited measurement resource reports macro base station, on the limited measurement resource that reports, is macro base station terminal scheduling transfer resource for macro base station according to the CSI of terminal to report.
A kind of implementation in above-mentioned steps 403 is, the macro base station terminal just begins to report the CSI that measures on the said limited measurement resource after the limited measurement resource format of having received affirmation message authentication that macro base station sends.
So far, accomplished the flow process that the embodiment of the invention provides.
According to a kind of implementation method of the present invention, above-mentioned flow process can start according to certain condition, that is, when condition satisfies, just carry out above-mentioned flow process and measure, and otherwise, measures according to existing method.The benefit of this implementation method is, certain condition is only being satisfied in the terminal, such as when closing on Home eNodeB, just carry out the limited resources format identification that will measure, thereby avoided the measuring process of some unnecessary complicacies.
Specifically, a kind of method that starts according to condition is, said condition is that the terminal is carried out RRM to Home eNodeB and measured (RRM), for example measures the signal strength signal intensity of Home eNodeB, when the result who measures meets some requirements, and the above-mentioned flow process of starting terminal.
The another kind of method that starts according to condition is, said condition is that the terminal is carried out RRM to Home eNodeB and measured (RRM), for example measures the signal strength signal intensity of Home eNodeB, and when the result who measures met some requirements, the reporting measurement result gave macro base station.Macro base station is through the above-mentioned flow process of signaling indication macro base station starting terminal afterwards.Wherein, Macro base station is when sending the above-mentioned flow process of signaling macro base station starting terminal; Can also notify the candidate format that is used to discern said limited measurement resource format simultaneously, from candidate format, select said limited measurement resource format for the macro base station terminal, execution mode 2 specifically sees below.
Need to prove; In the prior art; The CSI measurement be satisfy that Measuring Time requires and with the constantly nearest subframe of reporting measurement result on carry out, when not introducing ABSF, the CSI of adjacent sub-frame differs very little; Therefore, can think that when scheduling transmission resources their CSI is the same.And after having introduced ABSF; Because in fact adjacent ABSF and the CSI of non-ABSF differ maybe be very big; If think that when scheduling transmission resources the CSI that measures on the ABSF and the CSI of non-ABSF are the same; Just directly utilize ABSF to go up the CSI that measures, this can cause the transfer of data on the non-ABSF very large FER to occur.Based on this; Among the present invention; The macro base station terminal is before the CSI that carries out step 403 measures; Confirm that earlier on which limited measurement resource, carrying out the CSI measurement is step 401, and determined limited measurement resource format is reported macro base station is step 402, reports macro base station to the CSI that on limited measurement resource, measures again afterwards.So, can find out that through flow process shown in Figure 4, (X2 S1) tells macro base station with limited measurement resource format, but limited measurement resource format is determined self at the macro base station terminal not need Home eNodeB to pass through interface.Through following each execution mode the macro base station terminal is confirmed that the operation of limited measurement resource format describes below:
Execution mode 1:
In this execution mode 1; If all Home eNodeB adopt a fixing ABSF distribution mode or adopt a general ABSF distribution mode by the network terminal notice; Promptly all Home eNodeB all adopt unified ABSF distribution mode, and then the macro base station terminal can be directly be carried out CSI and measured just passable on the corresponding macro base station sub-frame resources form of this unified ABSF distribution mode.
Need to prove that because all Home eNodeB all adopt unified ABSF distribution mode, macro base station can uniquely confirm that therefore, the macro base station terminal there is no need the ABSF distribution mode that this is unified and reports macro base station.
Execution mode 2:
It is not the situation that adopts unified ABSF distribution mode that this execution mode 2 is mainly used in all Home eNodeB.Adopting different ABSF distribution modes with the different home base station is example; Based on this; Each limited measurement resource distribution form of limited measurement resource distribution form that the macro base station terminal can provide network terminal or agreement regulation is as the limited measurement resource format of candidate; Wherein, the limited measurement resource format of candidate is essentially the pairing macro base station sub-frame resources of the ABSF distribution mode form that Home eNodeB possibly adopt.
More excellent; In order to simplify the complexity that limited measurement resource format is confirmed at the macro base station terminal; Improve the accuracy of the limited measurement resource format of terminal recognition, in this execution mode 2, the limited measurement resource format of candidate that network terminal provides or the agreement regulation can be the limited resources of corresponding specific ratios; That is, candidate's limited measurement resource format has only limited several kinds or even has only a kind of.Said specific ratios is the ratio that limited resources account for total resources; For example in 40 milliseconds cycle; One has 40 sub-frame, and the limited resources ratio is 25%, and referring to limited measurement resource format has 10 subframes that can be used as limited measurement resource in 40 sub-frame.A kind of concrete examples of implementation do; Agreement has been stipulated or network terminal defines the corresponding unique or several kinds of limited limited measurement resource formats of each limited resources ratio through signaling; As stipulated 12.5%; 25%, 50% ratio such as limited resources such as grade is distinguished corresponding limited measurement resource format.Based on this, network terminal when the limited measurement resource format of notice macro base station terminal candidate, only notify the limited resources ratio or wait the limited resources ratio and which or the limited measurement resource format of which candidate that said ratio is corresponding just passable.The macro base station terminal is discerned just passablely with regard to only measuring the limited resources that will measure institute in the resource format limited several candidates like this, and this can reduce the complexity of identification, and improves the precision of discerning.
Afterwards, thus the macro base station terminal the limited measurement resource format of candidate measured confirmed limited measurement resource format, specifically can realize through following mode:
Mode 1:
Select the maximum CQI value of value the CQI value that the limited measurement resource format of each candidate is measured in setting cycle; As limited measurement resource format, said setting cycle comprises ABSF configuration cycle or a plurality of ABSF configuration cycle with the limited measurement resource format of the candidate who records this CQI value.Here, setting cycle comprises ABSF configuration cycle or a plurality of ABSF configuration cycle.
With specific embodiment mode 1 is described below:
If in the corresponding CQI value that records of the limited measurement resource format of each candidate, the limited measurement resource format of candidate that records maximum CQI value is P in setting cycle i, will be at this P iOn the CQI value that records be designated as CQI i, the CQI value that will on current measurement resource (such as the limited measurement resource format of having determined) or the limited measurement resource format of current other candidates, record is designated as CQI 0, CQI then iWith CQI 0Satisfy following relation:
CQI i>=CQI 0+ Δ, wherein Δ is real number or the integer more than or equal to 0;
Then, Pi is limited measurement resource format to be determined.
Need to prove, more accurate and stable in order to ensure determined limited measurement resource format, can add on mode 1 basis that one or more filter confirms limited measurement resource format, specifically see following mode 2 and 3.
Mode 2:
If the limited measurement resource format of a candidate at N the ABSF number of times (the square formula 1 of this identification mode) at most that is identified as limited measurement resource format in configuration cycle continuously, then confirm the limited measurement resource format of this candidate for the limited measurement resource format that will measure.Also promptly:
Limited measurement resource format confirm the cycle=N*ABSF configuration cycle, wherein N is an integer;
Such as, in configuration cycle, all be P at N the continuous M of ABSF in a configuration cycle ABSF according to certain determined limited measurement resource format of method (like mode 1) of confirming limited measurement resource format i, P so iBe the limited measurement resource format that will measure.Wherein, M is more than or equal to 1 and smaller or equal to N.
For above dual mode is understood easily, lift a specific embodiment below and describe.
Referring to Fig. 5, the sketch map of the definite limited measurement resource format that Fig. 5 provides for the embodiment of the invention.As shown in Figure 5, suppose that the limited measurement resource format of candidate is 4 kinds, be respectively P 1To P 4It should be noted that the limited measurement resource format of candidate that network terminal provides can corresponding a certain frequency.So, the macro base station terminal will be according to aforesaid way 1 or mode 2 or while occupation mode 1 and mode 2 definite limited measurement resource format from the limited measurement resource format of these four kinds of candidates.
Mode 3:
If the limited measurement resource format of a candidate is identified as limited measurement resource format L time continuously, confirm that then the limited measurement resource format of this candidate is limited measurement resource format.For example, confirm that at L time continuous needs adopting the determined limited measurement resource format of certain method of confirming limited measurement resource format (like mode 1) is P on the cycle of limited measurement resource format i, P so iBe the limited resource format that will measure.Wherein, L is more than or equal to 1, and it is confirmed by the precision that limited measurement resource format is identified.
Mode 4:
In this mode 4, can utilize arbitrary combination of mode 1 to mode 3 to confirm limited measurement resource format.
Execution mode 3:
In this execution mode 3; The macro base station terminal is through near the system information of Home eNodeB reading; Therefrom obtain the ABSF distribution mode of Home eNodeB, the macro base station sub-frame resources form that the ABSF distribution mode of this acquisition is corresponding confirm as the limited measurement resource format that will measure.
Execution mode 4:
In this execution mode 4, the physical layer identifications (ID) of Home eNodeB need be set and the ABSF distribution mode that adopts between mapping relations, specifically as shown in Figure 6.So; Near the physical layer ID of the Home eNodeB macro base station terminal just can be confirmed; From the mapping relations that have been provided with, find the corresponding ABSF distribution mode of this physical layer ID that confirms, the macro base station sub-frame resources form that this ABSF distribution mode of confirming is corresponding is confirmed as limited measurement resource format.In the present embodiment, the physical layer ID of each Home eNodeB can a corresponding unique ABSF form.Wherein, the mapping relations between physical layer ID and the ABSF distribution mode specifically can be: the value of physical layer ID delivery is exactly the index of Home eNodeB ABSF distribution mode, i.e. the index of PCI mod N=ABSF distribution mode.
Execution mode 5:
In this execution mode 5, the form of the limited measurement resource that CSI measures is confirmed to be used to carry out in the macro base station terminal, and be specially: the signal to noise ratio of all possible subframe combination correspondence is measured at the macro base station terminal in first specific period; Wherein, this first specific period can comprise ABSF configuration cycle or a plurality of ABSF configuration cycle; From the Signal to Interference plus Noise Ratio of measuring (SINR), select the maximum signal to noise ratio of value, the subframe combination that this signal to noise ratio of selecting is corresponding is as the said limited measurement resource format that will measure.
Execution mode 6:
In this execution mode 6; The form of the limited measurement resource that CSI measures is confirmed to be used to carry out in the macro base station terminal; Be specially: if near the strong jamming of Home eNodeB is not received at the macro base station terminal; Perhaps all descending sub frames of Home eNodeB all are the ABSF subframes near the macro base station terminal, then the macro base station terminal with the combination of all subframes in second specific period as the limited measurement resource format that will measure.
Execution mode 7:
In this execution mode 7, all possible subframe combination in the fixed cycle is measured at the macro base station terminal, then according to the definite limited measurement resource format that will measure of the arbitrary mode in mode 1 to the mode 4 in the foregoing description 2.
So far, accomplished the description of the definite limited measurement resource format that will measure in macro base station terminal among the embodiment 1 through above 7 execution modes.
In the face of the macro base station terminal operation that limited measurement resource format reports macro base station is described down:
In the present embodiment, can send limited measurement resource format through high-level signaling, wherein; It is aperiodic that limited measurement resource format sends, event driven, promptly works as the macro base station terminal recognition and thinks that variation has taken place the ABSF distribution mode of Home eNodeB; At this moment the limited measurement resource format that triggers after the high-level signaling transmission changes is given the base station; Wherein, the limited measurement resource format after the said variation is the corresponding macro base station sub-frame resources form of ABSF distribution mode after changing, and flow process is as shown in Figure 7.
A kind of expansion as the embodiment of the invention; Also can send limited measurement resource format through the physical layer channel control information cycle; At this moment, it is the cycle that this limited measurement resource format sends, and that is to say; No matter whether limited measurement resource format changes, and limited measurement resource format all will be sent to macro base station in the macro base station terminal.Here, the cycle that this limited measurement resource format sends can be the same with the cycle of CSI, also can be the multiple in CSI cycle, and is as shown in Figure 8.
Need to prove; Because the cycle of limited measurement resource format and the report cycle of CSI do not match, therefore, when the same CSI needs of measuring according to same ABSF resource were reported in a plurality of different moment; The unnecessary CSI that repeats reports and will be cancelled, and is as shown in Figure 9.
So far, embodiment 1 provided by the invention is described.
Embodiment 2:
The situation that this embodiment 2 is mainly used in Home eNodeB and macro base station and deposits, its method that provides mainly comprises: the form of the limited measurement resource that CSI measures is confirmed to be used to carry out in the macro base station terminal; The CSI that said macro base station terminal will be measured on said limited measurement resource reports said macro base station, on said limited measurement resource, is macro base station terminal scheduling data transmission resources according to the CSI of macro base station terminal to report for said macro base station.
Clearer for the description that makes embodiment 2, be described in detail in the face of this embodiment 2 down:
In embodiment 2; The user carries out the measurement of RLM/RRM for ease, under the situation of macro base station and Home eNodeB coexistence, has introduced the public ABSF form of Home eNodeB; The form of this public ABSF is the subclass of all Home eNodeB ABSF forms, and is shown in figure 10.
As can be seen from Figure 10,, except having public ABSF form, also have the distinctive ABSF form of Home eNodeB, specifically see Home eNodeB 1 to the Home eNodeB 4 among Figure 10 for Home eNodeB.
In present embodiment 2; The form of public ABSF is to be set by the OAM that is used for managing Femtocell and macro base station; Be specially: the public ABSF form of all Home eNodeB of OAM configuration; And notice gives macro base station and Home eNodeB, when the family base station receives public ABSF form, carries out corresponding sub-frame configuration according to the public ABSF form of this reception; When macro base station receives public ABSF form, send the public ABSF form that receives and give the macro base station terminal.This flow process specifically can be referring to Figure 11.
In present embodiment 2; The macro base station terminal confirms that limited measurement resource format mainly is to confirm according to the disturbed condition near Home eNodeB experiencing; Particularly, this limited measurement resource format can comprise: the macro base station sub-frame resources form that the public ABSF of the form of all sub-frame resources of macro base station, near Home eNodeB is corresponding, near the public ABSF of perhaps Home eNodeB and the corresponding macro base station sub-frame resources form of peculiar ABSF.Wherein, near the public ABSF of Home eNodeB is informed to the macro base station terminal by macro base station, and near the peculiar ABSF of Home eNodeB can be confirmed through near the system information of Home eNodeB reading by the macro base station terminal.
Macro base station is known the limited measurement resource format that the macro base station terminal is confirmed for ease, in the present embodiment, can send the indication that is used to report limited measurement resource format to the macro base station terminal by macro base station.So; After the macro base station terminal receives this indication; If the current form of confirming limited measurement resource, the form that then reports definite limited measurement resource are to macro base station, if the current form of also not confirming limited measurement resource; Wait until that then the form that reports definite limited measurement resource is to macro base station after the form of confirming limited measurement resource.
And as the another kind of implementation of present embodiment 2; This macro base station terminal also can confirm to be used to carry out the form of the limited measurement resource that CSI measures according to the subframe type that macro base station being used to of confirming dispatched said macro base station terminal, and the subframe type of through Figure 12 how macro base station being confirmed to be used to dispatch said macro base station terminal is below described:
Referring to Figure 12, the macro base station that Figure 12 provides for the embodiment of the invention 2 confirms to be used to dispatch the flow chart of the subframe type at said macro base station terminal.Shown in figure 12, this flow process can may further comprise the steps:
Step 1201, macro base station terminal are carried out the RSRQ measurement, and feed back to macro base station.
Step 1202, macro base station receives the RSRQ that send at the macro base station terminal, and whether judges said RSRQ less than the setting thresholding, if, execution in step 1203, otherwise, execution in step 1204.
In this step 1202, setting thresholding can be according to the actual conditions setting.
Step 1203, macro base station are confirmed the said macro base station of scheduling terminal on all subframes.
That is to say that the subframe type that macro base station is confirmed is the said macro base station of scheduling terminal on all subframes of macro base station.This step 1203 mainly be at the macro base station terminal away from Home eNodeB, Home eNodeB is to confirming under the less scene of the interference at macro base station terminal.Under this scene, the macro base station terminal can be dispatched on all subframes by macro base station, and the present invention is called the 3rd Terminal Type with this type macro base station terminal, and is specifically shown in figure 13.
Step 1204, macro base station determine whether only scheduling macro base station terminal on the public ABSF of Home eNodeB, if, execution in step 1205, otherwise, execution in step 1206.
Confirming of this step 1204 can be according to current business amount and actual conditions execution, and the present invention does not limit.
Step 1205, macro base station are confirmed the said macro base station of scheduling terminal on the public ABSF of Home eNodeB.
That is to say that in this step 1205, the subframe type that macro base station is confirmed is scheduling macro base station terminal on the public ABSF of Home eNodeB, the present invention is called the 1st Terminal Type with this type macro base station terminal, and is shown in figure 13.
Step 1206, macro base station are confirmed to dispatch said macro base station terminal at the public ABSF of Home eNodeB and peculiar ABSF.
That is to say that in this step 1206, the subframe type that macro base station is confirmed is scheduling macro base station terminal on the public ABSF of Home eNodeB and peculiar ABSF, the present invention is called the 2nd Terminal Type with this type macro base station terminal, and is shown in figure 13.
So far, accomplish flow process shown in Figure 12.
Based on flow process shown in Figure 12, when macro base station determine be used to dispatch the subframe type at said macro base station terminal after, the subframe type of being dispatched said macro base station terminal this being used to of confirming is sent to said macro base station terminal.Particularly, macro base station can be given said macro base station terminal through the subframe type that high-level signaling being used to of send confirming dispatched said macro base station terminal.
After macro base station terminal being used to of receiving that macro base station confirms dispatched the subframe type at said macro base station terminal; Can confirm to be used to carry out the limited measurement resource that CSI measures; Be specially: if said subframe type is dispatched said macro base station terminal on all subframes of macro base station, the form of then said limited measurement resource is all sub-frame resources forms of said macro base station;
If said subframe type is the said macro base station of scheduling terminal on the public ABSF of Home eNodeB, the form of then said limited measurement resource is the corresponding macro base station sub-frame resources form of public ABSF;
If said subframe type is for to dispatch said macro base station terminal at the public ABSF and the peculiar ABSF of Home eNodeB, the form of then said limited measurement resource is public ABSF and the corresponding macro base station sub-frame resources form of peculiar ABSF.Wherein, the peculiar ABSF of Home eNodeB confirms that through near the system information of Home eNodeB reading macro base station is not known by said macro base station terminal.
Wherein, When the macro base station terminal is the 3rd type of macro base station terminal; The macro base station terminal is basic identical in the CSI of all subframes value, and at this moment macro base station just need not known the limited measurement resource format that the macro base station terminal is confirmed, can on all subframes, dispatch this macro base station terminal; When the macro base station terminal is the 1st type of macro base station terminal,, therefore, need not know the limited measurement resource format that the macro base station terminal is confirmed because macro base station has been known the public ABSF form of Home eNodeB yet.But; When the macro base station terminal is the 2nd type of macro base station terminal; Macro base station is not known the peculiar ABSF form of Home eNodeB; Therefore, the limited measurement resource format that needs the macro base station terminal to confirm is that public ABSF and the corresponding macro base station sub-frame resources form of peculiar ABSF report to macro base station, when the affirmation continued CSI that receives macro base station measures.
So far, accomplish the description of embodiment 2.
Can find out by above technical scheme, among the present invention, utilize the macro base station terminal to obtain the form of limited measurement resource, on this form, measure CSI, report macro base station to CSI.In addition, report macro base station to the form of this limited measurement resource that identifies, let macro base station on the resource of CSI indication, dispatch.Can measure to disturb on the little resource through method provided by the invention terminal and measure CSI, and make the base station let the terminal disturb little transmitted over resources data, thereby can reduce the interference of Home eNodeB the macro base station terminal at these through scheduling.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being made, is equal to replacement, improvement etc., all should be included within the scope that the present invention protects.

Claims (26)

1. a channel status is indicated (CSI) method of measurement, it is characterized in that this method comprises:
A, the form of the limited measurement resource that CSI measures is confirmed to be used to carry out in the macro base station terminal;
B, the CSI that said macro base station terminal will be measured on said limited measurement resource reports said macro base station, on said limited measurement resource, is macro base station terminal scheduling data transmission resources according to the CSI of macro base station terminal to report for said macro base station.
2. method according to claim 1 is characterized in that steps A comprises:
A1, the subframe type that said macro base station terminal is dispatched according to said macro base station being used to of confirming in the macro base station terminal confirms to be used to carry out the form of the limited measurement resource that CSI measures.
3. method according to claim 2 is characterized in that, in the steps A 1, the RSRQ that said macro base station utilizes said macro base station terminal to send confirms to be used to dispatch the subframe type at said macro base station terminal.
4. method according to claim 2 is characterized in that, in the steps A 1, the subframe type that said macro base station is dispatched said macro base station terminal through definite being used to of high-level signaling transmission is given said macro base station terminal.
5. method according to claim 2 is characterized in that, steps A 1 comprises:
If said subframe type is dispatched said macro base station terminal on all subframes of macro base station, the form of then said limited measurement resource is all sub-frame resources forms of said macro base station;
If said subframe type is the said macro base station of scheduling terminal on the public ABSF of Home eNodeB, the form of then said limited measurement resource is the corresponding macro base station sub-frame resources form of public ABSF;
If said subframe type is for to dispatch said macro base station terminal at the public ABSF and the peculiar ABSF of Home eNodeB, the form of then said limited measurement resource is public ABSF and the corresponding macro base station sub-frame resources form of peculiar ABSF.
6. method according to claim 5 is characterized in that, the form of said public ABSF is sent to Home eNodeB and macro base station by the OAM that is used to manage said Home eNodeB and macro base station, and is sent to the macro base station terminal by said macro base station.
7. method according to claim 5 is characterized in that, the form of the peculiar ABSF of said Home eNodeB is confirmed through near the system information of Home eNodeB reading by said macro base station terminal.
8. method according to claim 5; It is characterized in that; When said macro base station terminal is the form of the corresponding macro base station sub-frame resources of public ABSF and peculiar ABSF at the form of said limited measurement resource, further report form to the said macro base station of this limited measurement resource.
9. method according to claim 1 is characterized in that steps A further comprises:
The macro base station terminal receives the indication that is used to report limited measurement resource format that macro base station sends;
The macro base station terminal is behind the form of confirming limited measurement resource, and the form that reports definite limited measurement resource is to macro base station.
10. method according to claim 9; It is characterized in that the limited measurement resource format that the macro base station terminal is confirmed is: the macro base station sub-frame resources form that the public ABSF of the form of all sub-frame resources of said macro base station, near Home eNodeB is corresponding, near the public ABSF of perhaps Home eNodeB and the corresponding macro base station sub-frame resources form of peculiar ABSF.
11. method according to claim 1 is characterized in that, steps A further comprises:
The form of the limited measurement resource of macro base station terminal to report is to macro base station.
12. method according to claim 1 is characterized in that, limited measurement resource format is and the corresponding macro base station sub-frame resources form of ABSF form of low power nodes LPN configuration, is confirmed by the system information of the LPN said macro base station terminal scheduling near.
13. method according to claim 1 is characterized in that, the form of limited measurement resource is confirmed at said macro base station terminal through following operation:
Select the maximum CQI value of value the CQI value that the limited measurement resource format of each candidate is measured in setting cycle; As limited measurement resource format, said setting cycle comprises ABSF configuration cycle or a plurality of ABSF configuration cycle with the limited measurement resource format of the candidate who records this CQI value.
14. method according to claim 1 is characterized in that, the form of limited measurement resource is confirmed at said macro base station terminal through following operation:
If the limited measurement resource format of a candidate is maximum at N continuous ABSF is identified as limited measurement resource format in configuration cycle number of times, confirm that then the limited measurement resource format of this candidate is said limited measurement resource format.
15. method according to claim 1 is characterized in that, the form of limited measurement resource is confirmed at said macro base station terminal through following operation:
If the limited measurement resource format of a candidate is identified as limited measurement resource format L time continuously, confirm that then the limited measurement resource format of this candidate is limited measurement resource format, said L is confirmed by the precision that said limited measurement resource format is identified.
16., it is characterized in that the CQI value of measuring on the said identified limited measurement resource format is maximum according to claim 14 or 15 described methods.
17., it is characterized in that said macro base station terminal confirms that limited measurement resource format comprises according to the arbitrary described method of claim 13 to 15:
The form of limited measurement resource is confirmed in utilization by the combination of arbitrary operation in the claim 13 to 15.
18. method according to claim 1 is characterized in that, said macro base station terminal confirms that limited measurement resource format comprises:
The corresponding signal to noise ratio of all possible subframe combination is measured at the macro base station terminal in first specific period;
From the signal to noise ratio of measuring, select the maximum signal to noise ratio of value, the subframe combination that this signal to noise ratio of selecting is corresponding is as said limited measurement resource format.
19. method according to claim 1 is characterized in that, said macro base station terminal confirms that limited measurement resource format comprises:
If all descending sub frames of LPN all are ABSF near near the strong jamming of LPN does not receive at the macro base station terminal, perhaps said macro base station terminal, then said macro base station terminal with the combination of all subframes in second specific period as said limited measurement resource format.
20. method according to claim 1 is characterized in that, limited measurement resource format is confirmed at said macro base station terminal:
The physical layer identifications of LPN said macro base station terminal is confirmed near; From the LPN physical layer identifications that has been provided with and the mapping relations between the ABSF distribution mode, find the corresponding ABSF distribution mode of this physical layer identifications of confirming, the macro base station sub-frame resources form that this ABSF distribution mode of confirming is corresponding is confirmed as the form of limited measurement resource.
21. method according to claim 1 is characterized in that, said macro base station terminal reports macro base station with limited measurement resource format and comprises:
When the ABSF distribution mode of LPN changes near identifying at said macro base station terminal; Limited measurement resource format through after the high-level signaling transmission variation is given the base station, and the limited measurement resource format after the said variation is the corresponding macro base station sub-frame resources form of ABSF distribution mode after changing.
22. according to Claim 8,9 or 11 described methods, it is characterized in that form to the macro base station of the limited measurement resource of said macro base station terminal to report comprises:
The form that limited measurement resource is sent through the physical layer channel control information cycle in said macro base station terminal is given macro base station.
23. method according to claim 22 is characterized in that, among the said step B, the macro base station terminal is after the said limited measurement resource format that received affirmation message authentication that macro base station sends, carries out the operation that reports said CSI.
24., it is characterized in that said method is at said macro base station terminal LPN to be carried out RRM to measure the measurement result of (RRM) and reach when imposing a condition and carry out according to the arbitrary described method of claim 12 to 15; Perhaps;
Said is that the measurement result of LPN being carried out RRM at said macro base station terminal reaches to impose a condition and reports macro base station, and carry out when receiving the indication of the said method of startup that macro base station sends through signaling.
25. method according to claim 24 is characterized in that, the limited measurement resource format of said candidate is carried at informs in the said indication to said macro base station terminal;
Perhaps, the limited measurement resource format of said candidate is the agreement regulation.
26. method according to claim 24 is characterized in that, the limited resources of the corresponding specific ratios of the limited measurement resource format of said candidate;
The limited measurement resource format of said candidate is confirmed through the specific ratios that signaling limits through agreement regulation or network terminal.
CN2011100360925A 2010-11-08 2011-02-01 Channel status indication measurement method Pending CN102625330A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN2011100360925A CN102625330A (en) 2011-02-01 2011-02-01 Channel status indication measurement method
KR1020110111321A KR20120049134A (en) 2010-11-08 2011-10-28 Method and apparatus for measuring channel state information
US13/291,616 US20120113850A1 (en) 2010-11-08 2011-11-08 Method and apparatus for measuring channel state information
PCT/KR2011/008465 WO2012064085A2 (en) 2010-11-08 2011-11-08 Method and apparatus for measuring channel state information

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011100360925A CN102625330A (en) 2011-02-01 2011-02-01 Channel status indication measurement method

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Application publication date: 20120801