CN102752863A - Method for acquiring NeNB (Home eNode B) ABS (Almost Blank Subframe) configuration modes - Google Patents
Method for acquiring NeNB (Home eNode B) ABS (Almost Blank Subframe) configuration modes Download PDFInfo
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- CN102752863A CN102752863A CN2012102130975A CN201210213097A CN102752863A CN 102752863 A CN102752863 A CN 102752863A CN 2012102130975 A CN2012102130975 A CN 2012102130975A CN 201210213097 A CN201210213097 A CN 201210213097A CN 102752863 A CN102752863 A CN 102752863A
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Abstract
The invention discloses a method for acquiring NeNB (Home eNode B) ABS (Almost Blank Subframe) configuration modes. The method comprises the following steps of: carrying out a channel quality indication measurement on resources which are possibly protected by ABSs in all the ABS configuration modes through MUE (Macro User Equipment) with a relatively low broadband CQI (Channel Quality Indicator) value reported to an MeNB under the indication of the MeNB; detecting the MUE interfered by CSG (Closed Subscriber Group)-HeNB according to relatively high difference between broadband CQI values fed back under the channel quality indicator measurement which is carried out on the resources protected through the ABSs and broadband CQI values fed back under the channel quality indicator measurement which is carried out on the resources which are not protected through the ABSs; and then carrying out limited channel quality indicator measurement on other subframes by the interfered MUE under the indication of the MeNB, thus finally acquiring the ABS configuration mode of the CSG-HeNB according to the relatively large difference between the broadband CQI values of the resources protected through the ABSs and the broadband CQI values of the resources which are not protected by the ABSs.
Description
Technical field
The invention belongs to wireless communication technology field; Be specifically related to based on Home eNodeB (Home eNode B; HeNB) in LTE-A (Long Term Evolution Advanced) the heterogeneous network Inter-Cell Interference Coordination technology, (Macro eNode B MeNB) detects grand user (the Macro User Equipment that disturbed by Home eNodeB to macro base station; MUE) method, and the method for obtaining Home eNodeB ABS (Almost Blank Subframe) configuration mode.
Background technology
The demand of miscellaneous service amount is exponential increase in the Cellular Networks.The performance of various advanced technologies with the whole network of further raising used in the LTE-A suggestion, like carrier aggregation, high-order mimo (Multiple Input Multiple Output) and multi-point cooperative etc.But these advanced technologies (as indoor) under the lower situation of Signal to Interference plus Noise Ratio can not obtain bigger performance improvement 0; But concrete list of references: David Lopez-Perez; Etc; Enhanced Inter-Cell interference Coordination Challenges in Heterogeneous Networks, IEEE wireless communications magazine, June 2011.
Nearest investigation shows that following 50% telephone service and 70% data service will be carried out indoor.Mobile operator wants to win the market more share, just must support a large amount of indoor business.Because penetration loss, even increase the input of macro base station, the indoor signal quality also can not get improving well, and indoor user often can not get the service of good wireless network.Yet important index of the 4th third-generation mobile communication is exactly the broadband service experience that unanimity is provided for the user in any place.
For above problem, be the most promising solution at present at indoor deployment low-power, undersized Home eNodeB.Because HeNB adopts with mode frequently to dispose; And CSG (the Closed Subscriber Group) HeNB of pattern down only provides wireless data transfer services to CSG user; Therefore, CSG-HeNB can cause serious descending interference to the MUE that is in its coverage.
In motion " 3GPP; R1-104547; Time Shifting and Almost Blank Subframe for Intercell Interference; MediaTek Inc.August, 2010 ", point out, can eliminate CSG-HeNB to the descending interference of the MUE that is positioned at its coverage through the ABS subframe that in the CSG-HeNB downlink radio frame, reasonably disposes some.The basic ideas of this Inter-Cell Interference Coordination technology based on the ABS subframe are: the part subframe in the CSG-HeNB downlink frame is configured to the ABS subframe; To avoid descending control information of CSG-HeNB cell downlink information and macrocell and system information to clash; And make MeNB on by the resource of ABS subframe protection, dispatch the MUE that receives the CSG-HeNB interference, thereby realize the interference coordination of minizone.Obviously, guarantee to receive between MUE that CSG-HeNB disturbs and the MeNB reliable wireless to transmit, MeNB must find in time that disturbed MUE also accurately obtains the ABS configuration mode of CSG-HeNB.The ABS configuration mode comprises the position and the quantity of ABS subframe in configuration cycle and each configuration cycle of ABS.3GPP decides through discussion and does not have X2 interface between MeNB and the HeNB, and therefore, MeNB can not directly carry out Signalling exchange to obtain the ABS configuration mode of CSG-HeNB with CSG-HeNB.
Summary of the invention
There is not X2 interface in the present invention in order to solve between MeNB and the HeNB; The MeNB that causes can not directly carry out the problem of Signalling exchange with the ABS configuration mode that obtains CSG-HeNB with CSG-HeNB; At first proposed a kind of macro base station and detected the grand user method that disturbed by Home eNodeB, specifically comprised the steps:
Step 1: design some kinds of ABS configuration modes in advance according to communication environment, said some kinds of ABS configuration modes satisfy the subframe that there are a same sequence number at least in all configuration modes and are all the ABS subframe;
The first broadband CQI (Channel Quality Indicator) the value CQI that the channel quality indication measurement of all MUE is reported in the step 2:MeNB monitoring macrocell
0, the first broadband CQI value CQI that is reported when the channel quality indication measurement of a certain MUE
0During≤α, MeNB indicates said MUE on the resource that can be protected by all ABS configuration modes, to do the channel quality indication measurement, and said channel quality indication measurement is a limited channel quality indication measurement.Then, the second broadband CQI value CQI that the limited channel quality indication measurement that utilizes said MUE and done reports
2The 3rd broadband CQI value CQI with the last subnormal channel quality indication measurement of said MUE
3Value is compared, if CQI
2-CQI
3During>=β, then said MUE receives CSG-HeNB and disturbs, and wherein, α is the first threshold that is provided with in advance, and β is second threshold value that is provided with in advance.
In order to address the above problem, the invention allows for a kind of method of obtaining Home eNodeB ABS configuration mode, specifically comprise the steps:
Step 1: design some kinds of ABS configuration modes in advance according to communication environment, said some kinds of ABS configuration modes satisfy that to have the subframe of a same sequence number at least be the ABS subframe;
The first broadband CQI (Channel Quality Indicator) the value CQI that the channel quality indication measurement of all MUE is reported in the step 2:MeNB monitoring macrocell
1, the first broadband CQI value CQI that is reported when the channel quality indication measurement of a certain MUE
1During≤α, MeNB indicates said MUE on the resource that can be protected by all ABS configuration modes, to do the channel quality indication measurement, and said channel quality indication measurement is a limited channel quality indication measurement.Then, the second broadband CQI value CQI that the limited channel quality indication measurement that utilizes said MUE and done reports
2The 3rd broadband CQI value CQI with the last subnormal channel quality indication measurement of said MUE
3Value is compared, if CQI
2-CQI
3During>=β, then said MUE receives CSG-HeNB and disturbs, and wherein, α is the first threshold that is provided with in advance, and β is second threshold value that is provided with in advance;
Step 3: step 2 detects the interference that said MUE receives CSG-HeNB; Then MeNB indicates said MUE in all possible ABS configuration mode, to choose two kinds arbitrarily; Be designated as first configuration mode and second configuration mode; For selected two kinds of ABS configuration mode first configuration modes and second configuration mode; Do limited channel quality indication measurement, the 4th broadband CQI value CQI that uses this limited channel quality indication measurement to report on the resource that can not be protected only being protected by the ABS subframe of first configuration mode by the ABS subframe of the second pattern configurations pattern
4The second broadband CQI value CQI that value and step 2 obtain
2Value is compared, if CQI
2-CQI
4During>=γ, then get rid of the second pattern configurations pattern, otherwise, get rid of first configuration mode, wherein, γ is the 3rd threshold value that is provided with in advance;
Step 4: repeating step 3 is 1 up to the number of all possible ABS configuration mode, and then this ABS configuration mode is the ABS configuration mode of the CSG-HeNB that MeNB obtains.
Further, said some kinds of ABS configuration modes have identical ABS configuration cycle and different ABS number of sub-frames.
Beneficial effect of the present invention: the present invention does the channel quality indication measurement to the less MUE of the broadband CQI value that MeNB reports through the MeNB indication on the resource that possibly protected by the ABS subframe in all ABS configuration modes; There is bigger difference in the broadband CQI value that is utilized in the channel quality indication measurement feedback of being done on the resource of ABS subframe protection with the broadband CQI value that the channel quality indication measurement of on the resource of not protected by the ABS subframe, being done feeds back, and detects in time effectively and receives the MUE that CSG-HeNB disturbs; MeNB indicates the MUE that is interfered to do limited channel quality indication measurement in other subframe more then; Utilize once more by the broadband CQI value of the resource of ABS subframe protection and by the bigger difference of broadband CQI value existence of the resource of ABS subframe protection; Lacking between HeNB and the MeNB under the condition of X2 interface; Make MeNB obtain the ABS configuration mode of CSG-HeNB exactly; Thereby make MeNB in the resource of being protected by the ABS subframe of CSG-HeNB configuration, dispatch disturbed MUE, guarantee the reliability of wireless data transmission between disturbed MUE and the MeNB.
Description of drawings
Fig. 1 is disturbed MUE and CSG-HeNBABS configuration mode schematic flow sheet for MeNB detects.
Fig. 2 is the HeNB downlink frame sketch map of configuration ABS subframe.
Embodiment
Below in conjunction with accompanying drawing (Fig. 1, Fig. 2) the present invention is done at length to set forth.
To there not being X2 interface between MeNB and the HeNB; The MeNB that causes can not directly carry out the problem of Signalling exchange with the ABS configuration mode that obtains CSG-HeNB with CSG-HeNB; The present invention has at first proposed a kind of macro base station and has detected the grand user method that disturbed by Home eNodeB; As shown in Figure 1, specifically comprise the steps:
Step 1: design some kinds of ABS configuration modes in advance according to communication environment; Here; Communication environment refers to the disturbance regime of current area; Specifically can be according to some kinds of ABS configuration modes of needs design of channels such as zones of different Physical Downlink Control Channel, Physical Control Format Indicator Channel, physics HARQ (Hybrid Automatic Repeat reQuest) indicating channel, Physical Broadcast Channel, primary synchronization channel, auxiliary synchronization channel, system information block type 1 and PCH in the protection macrocell; The number of ABS configuration mode can be set according to above-mentioned actual conditions; No longer specify at this, suppose that some kinds of ABS configuration modes are specially the N kind, can be designated as: P={p
0, p
1..., P
N-2, P
N-1.
Here; N kind ABS configuration mode is satisfied to exist the subframe of a same sequence number to be all the ABS subframe at least; 0 work song frame as shown in Figure 2, i.e.
Wherein, the number of ABS subframe in the set of
num (x) expression parameter x.The present invention has enumerated N=3 kind ABS configuration mode { p
0, p
1, p
2, below explain with bitmap:
Pattern 0 (8,1) p
0=[10000000]
Pattern 1 (8,2) p
1=[10000100]
Pattern 2 (8,3) p
2=[10001100]
Wherein, (8, x) expression is the cycle to dispose the ABS subframe with 8 sub-frame, and the number of ABS subframe is x in this pattern; Conventional subframe is represented in " 0 " in the square brackets, and the ABS subframe is represented in " 1 ".
Here, N kind ABS configuration mode has identical ABS configuration cycle and different ABS number of sub-frames.
The first broadband CQI value CQI that the channel quality indication measurement of all MUE is reported in the step 2:MeNB monitoring macrocell
1, the first broadband CQI value CQI that is reported when the channel quality indication measurement of a certain MUE
1During≤α; MeNB indicates said MUE (MeNB downlink frame 0 work song frame as shown in Figure 2) on the resource that can be protected by all ABS configuration modes to do the channel quality indication measurement; Said channel quality indication measurement is a limited channel quality indication measurement, the second broadband CQI value CQI that the limited channel quality indication measurement that utilizes said MUE then and done reports
2The 3rd broadband CQI value CQI with the last subnormal channel quality indication measurement of said MUE
3Value is compared, if CQI
2-CQI
3During>=β, then said MUE receives CSG-HeNB and disturbs, and wherein, α is the first threshold that is provided with in advance, and β is second threshold value that is provided with in advance.
To the problems referred to above, the present invention has also proposed a kind of method of obtaining Home eNodeB ABS configuration mode on the basis of said method, on the basis of above-mentioned two steps, also comprise the steps:
At this definition and variable of initialization, all possible ABS configuration mode of CSG-HeNB P
Pos={ p
0, p
1..., P
N-2, P
N-1.
Step 3: step 2 detects the interference that said MUE has received CSG-HeNB, and then MeNB indicates said MUE at all possible ABS configuration mode P
PosIn choose two kinds arbitrarily, be designated as the first configuration mode p
I1With the second configuration mode p
I2For two kinds of selected ABS configuration mode p
I1And p
I2, only by p
I2ABS subframe protection and not by p
I1The subframe of ABS subframe protection on do limited channel quality indication measurement, the 4th broadband CQI value CQI that reports with each limited channel quality indication measurement
4The second broadband CQI value CQI that value and step 2 obtain
2Value is compared, if CQI
2-CQI
4During>=γ, then get rid of the second pattern configurations pattern p
I2, the possible ABS configuration mode P of CSG-HeNB so
Pos-{ p
I2; If CQI
2-CQI
4<γ gets rid of the second configuration mode p
I1, the possible ABS configuration mode P of CSG-HeNB so
Pos-{ p
I1.Wherein, γ is the 3rd threshold value that is provided with in advance;
Step 4: repeating step 3 is 1 up to the number of all possible ABS configuration mode, and then this ABS configuration mode is the ABS configuration mode of the CSG-HeNB that MeNB obtains.
3 kinds of ABS configuration mode { p to enumerate in the step 1 below
0, p
1, p
2Specify the process that MeNB obtains Home eNodeB ABS configuration mode for example:
The all possible ABS configuration mode of Step1:HeNB is P
Pos={ p
0, p
1, p
2.At P
PosIn choose two configuration modes arbitrarily, that suppose to choose is p
0And p
1For p
0And p
1Two kinds of configuration modes can only be configured pattern p in ABS configuration cycle 1
1ABS subframe protection and can not be configured pattern p
0The subframe of protection is MeNB downlink frame 5 work song frames, and is as shown in Figure 2.
MeNB indicates disturbed MUE to do limited channel quality indication measurement at 5 work song frames then, the broadband CQI value CQI that uses this limited measurement to feed back
4With the second broadband CQI value CQI in the step 2
2Value is compared, if CQI
2-CQI
4>=γ then gets rid of pattern p
1, P
Pos={ p
0, p
2; If CQI
2-CQI
4<γ gets rid of pattern p
0, P
Pos={ p
1, p
2.
Step2: if that the Step1 eliminating is p
0, then all possible ABS configuration mode of CSG-HeNB this moment becomes P
Pos={ p
1, p
2.For p
1And p
2Two kinds of configuration modes can only be configured pattern p in ABS configuration cycle 1
2ABS subframe protection and can not be configured pattern p
1The subframe of protection is MeNB downlink frame 4 work song frames, and is as shown in Figure 2.
MeNB indicates said MUE to do limited channel quality indication measurement at 4 work song frames then, with the broadband CQI value CQI of this restricting channel quality indication measurement feedback
4With the second broadband CQI value CQI in the step 2
2Value is compared, if CQI
2-CQI
4>=γ then gets rid of pattern p
2, P
Pos={ p
1, MeNB thinks that the ABS configuration mode of CSG-HeNB is p so
1If CQI
2-CQI
4<γ gets rid of pattern p
1, P
Pos={ p
2, MeNB thinks that the ABS configuration mode of CSG-HeNB is p so
2
If that Step1 gets rid of is p
1, then all possible ABS configuration mode of CSG-HeNB this moment becomes P
Pos={ p
0, p
2.For p
0And p
2Two kinds of configuration modes can only be configured pattern p in ABS configuration cycle 1
2ABS subframe protection and can not be configured pattern p
1The subframe of protection is MeNB downlink frame 4 and 5 work song frames.So MeNB indicates described MUE to do limited channel quality indication measurement at No. 4 or 5 work song frames again.Because Step1 has obtained the broadband CQI value CQI in the limited measurement feedback of 5 work song frames
4, therefore, needn't repeat to have done the channel quality indication measurement.Get rid of configuration mode p by Step1
1Can know CQI
2-CQI
4>=γ directly gets rid of pattern p
2, P
Pos={ p
0.So can confirm the ABS configuration mode of CSG-HeNB is p
0
Those of ordinary skill in the art will appreciate that embodiment described here is in order to help reader understanding's principle of the present invention, should to be understood that protection scope of the present invention is not limited to such special statement and embodiment.Those of ordinary skill in the art can make various other various concrete distortion and combinations that do not break away from essence of the present invention according to these teachings disclosed by the invention, and these distortion and combination are still in protection scope of the present invention.
Claims (4)
1. a macro base station detects the grand user method that disturbed by Home eNodeB, specifically comprises the steps:
Step 1: design some kinds of ABS configuration modes in advance according to communication environment, said some kinds of ABS configuration modes satisfy the subframe that there are a same sequence number at least in all configuration modes and are all the ABS subframe;
The first broadband CQI value CQI that the channel quality indication measurement of all MUE is reported in the step 2:MeNB monitoring macrocell
1, the first broadband CQI value CQI that is reported when the channel quality indication measurement of a certain MUE
1During≤α, MeNB indicates said MUE on the resource that can be protected by all ABS configuration modes, to do the channel quality indication measurement, and said channel quality indication measurement is a limited channel quality indication measurement.Then, the second broadband CQI value CQI that the limited channel quality indication measurement that utilizes said MUE and done reports
2The 3rd broadband CQI value CQI with the last subnormal channel quality indication measurement of said MUE
3Value is compared, if CQI
2-CQI
3During>=β, then said MUE receives CSG-HeNB and disturbs, and wherein, α is the first threshold that is provided with in advance, and β is second threshold value that is provided with in advance.
2. macro base station according to claim 1 detects the grand user method that disturbed by Home eNodeB, it is characterized in that, some kinds of ABS configuration modes described in the step 1 have identical ABS configuration cycle and different ABS number of sub-frames.
3. a method of obtaining Home eNodeB ABS configuration mode specifically comprises the steps:
Step 1: design some kinds of ABS configuration modes in advance according to communication environment, said some kinds of ABS configuration modes satisfy that to have the subframe of a same sequence number at least be the ABS subframe;
The first broadband CQI value CQI that the channel quality indication measurement of all MUE is reported in the step 2:MeNB monitoring macrocell
1, the first broadband CQI value CQI that is reported when the channel quality indication measurement of a certain MUE
1During≤α, MeNB indicates said MUE on the resource that can be protected by all ABS configuration modes, to do the channel quality indication measurement, and said channel quality indication measurement is a limited channel quality indication measurement.Then, the second broadband CQI value CQI that the limited channel quality indication measurement that utilizes said MUE and done reports
2The 3rd broadband CQI value CQI with the last subnormal channel quality indication measurement of said MUE
3Value is compared, if CQI
2-CQI
3During>=β, then said MUE receives CSG-HeNB and disturbs, and wherein, α is the first threshold that is provided with in advance, and β is second threshold value that is provided with in advance.
Step 3: step 2 detects the interference that said MUE receives CSG-HeNB; Then MeNB indicates said MUE in all possible ABS configuration mode, to choose two kinds arbitrarily; Be designated as first configuration mode and second configuration mode; For selected two kinds of ABS configuration mode first configuration modes and second configuration mode; Do limited channel quality indication measurement, the 4th broadband CQI value CQI that uses this limited channel quality indication measurement to report on the resource that can not be protected only being protected by the ABS subframe of first configuration mode by the ABS subframe of the second pattern configurations pattern
4The second broadband CQI value CQI that value and step 2 obtain
2Value is compared, if CQI
2-CQI
4During>=γ, then get rid of the second pattern configurations pattern, otherwise, get rid of first configuration mode, wherein, γ is the 3rd threshold value that is provided with in advance;
Step 4: repeating step 3 is 1 up to the number of all possible ABS configuration mode, and then this ABS configuration mode is the ABS configuration mode of the CSG-HeNB that MeNB obtains.
4. the method for obtaining Home eNodeB ABS configuration mode according to claim 1 is characterized in that, some kinds of ABS configuration modes described in the step 1 have identical ABS configuration cycle and different ABS number of sub-frames.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2014067349A1 (en) * | 2012-11-02 | 2014-05-08 | 华为技术有限公司 | Quality measurement method, user equipment, network side device, and system |
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| CN101895936A (en) * | 2009-05-18 | 2010-11-24 | 中兴通讯股份有限公司 | Method and device for distributing control channel resources |
| CN101986586A (en) * | 2010-11-09 | 2011-03-16 | 中兴通讯股份有限公司 | Method and user equipment (UE) for measuring and feeding back channel quality |
| CN102098739A (en) * | 2011-01-28 | 2011-06-15 | 工业和信息化部电信传输研究所 | Method for increasing utilization ratio of resources, home base station, macro base station and system |
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| CN101895936A (en) * | 2009-05-18 | 2010-11-24 | 中兴通讯股份有限公司 | Method and device for distributing control channel resources |
| CN101986586A (en) * | 2010-11-09 | 2011-03-16 | 中兴通讯股份有限公司 | Method and user equipment (UE) for measuring and feeding back channel quality |
| CN102098739A (en) * | 2011-01-28 | 2011-06-15 | 工业和信息化部电信传输研究所 | Method for increasing utilization ratio of resources, home base station, macro base station and system |
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