CN102761973B - Method and system for adjusting almost bias subframe in heterogeneous network - Google Patents
Method and system for adjusting almost bias subframe in heterogeneous network Download PDFInfo
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Abstract
The invention discloses a method for adjusting an ABS (Almost Bias Subframe) in a heterogeneous network. The method comprises the following steps of: selecting users subjected to strong interference based on an RSRP (Reference Signal Received Power) fed back by UE (User Equipment) of a user by a micro base station; judging that the traditional ABS cannot meet the requirements of the users to be scheduled, subjected to strong interference, according to the number of the users subjected to strong interference to be scheduled and feeding information of the users to be scheduled, subjected to strong interference, back to a macro base station; and adjusting the ABS according to the information of the users to be scheduled, subjected to strong interference, by the macro base station. The invention also discloses the method for adjusting the ABS in the heterogeneous network. Therefore, the time delay of an ABS mode between the macro base station and the micro base station is shortened and the throughout of the whole system is improved.
Description
Technical field
The present invention relates to communication technical field, more specifically, relate in a kind of heterogeneous network almost method of adjustment and the system of gap frame (ABS).
Background technology
Now there are some researches show, in Long Term Evolution advanced person (LTE-advanced) system, introduce heterogeneous network.Heterogeneous network refers to that macrocell lower floor has also disposed Microcell.As long-distance radio frequency unit (RRH), femto base station (PicoeNB), Home eNodeB (Home eNB) and relay base station (relay eNB).Typically heterogeneous network has two kinds of deployment way.One is macrocell (macro cell)+home base station cells (femto cell), and another kind is macro cell+ picocell (pico cell) or relaying community (relay cell).The introducing of Microcell has caused more cell border areas, thereby causes extra interference.Unbalanced power between macrocell and Microcell is to causing particularly serious interference in the UE of cell border areas., all there is serious interference problem in above-mentioned two kinds of deployment way.
In the deployment way of macro cell+pico cell or relay cell, disturb and mainly come from distributed area expansion (range expansion).Range expansion uses in order to alleviate macro base station burden the reference signal receiving intensity (RSRP) that is different from tradition access.Specifically, UE is in the time of judgement access macrocell or Microcell, at the signal strength signal intensity RSRP from Microcell
microa side-play amount of upper increase (bias), bias is positive number, bias is normally configured by upper layer device, and change under normal circumstances.RSRP
microupper increase bias again with signal strength signal intensity RSRP from macrocell
macrorelatively, if RSRP
micro+ bias>=RSRP
macro, UE selects access Microcell; Otherwise UE selects access macrocell.
Use range expansion technology, the UE in accompanying drawing 1 in the extended region of Microcell can suffer severe jamming.Its reason is, comes from the one hand from the weakening of Microcell signal receiving strength, and comes from the other hand the enhancing from macrocell interference signal.The possibility that the UE of result within the scope of the extended region of Microcell can not correctly receive signal increases greatly, has further caused throughput of system decline.
How effectively to alleviate and even to eliminate Microcell and introduce the key that the interference bringing especially improves LTE-advanced systematic function, improves throughput.
Solution of the prior art is the time domain expansion of the ICIC of Release8/9 based on passback, conventionally uses ABS.ABS mainly refers to that macro base station sends downlink physical control channel (PDCCH) and is almost empty subframe, disturbs with the down control channel that reduces the user (pico UE) to Microcell.In ABS, PDCCH is only containing reference signal (CRS) and necessary control information, and downlink physical shared channel (PDSCH) part still retains the transmission of CRS.
In view of interference problem serious under heterogeneous network, in the time adopting ABS to alleviate the interference of the control channel of macro base station to micro-base station one side, the ABS configuration that macro base station one side has done possibly cannot meet the dispatching requirement of micro-base station one side, cause the time delay that between macro base station and micro-base station, abs mode is adjusted, and the decline of throughput.
Summary of the invention
In embodiment of the present invention proposition and a kind of heterogeneous network, the method for adjustment of ABS, shortens the time delay that between macro base station and micro-base station, abs mode is adjusted, and improves the throughput of whole system.
The embodiment of the present invention also proposes and a kind of system of adjusting ABS in heterogeneous network, shortens the time delay that between macro base station and micro-base station, abs mode is adjusted, and improves the throughput of whole system.
The technical scheme of the embodiment of the present invention is as follows:
A method of adjustment for gap frame almost in heterogeneous network, the method comprises:
The reference signal receiving intensity RSRP of micro-base station based on user UE feedback selects to be subject to interference user;
According to treating that scheduling is subject to the number of interference user, judge that existing almost gap frame ABS can not meet to treat that scheduling is subject to the demand of interference user, feed back and treat that scheduling is subject to the information of interference user to macro base station;
Macro base station is according to treating that scheduling is subject to the information of interference user to adjust ABS.
The described RSRP based on UE feedback selects comprised by interference user: select to meet RSRP
macrowith RSRP
microdifference be more than or equal to RSRP
thresholdbe subject to interference user, RSRP
macrothe RSRP that received from macrocell by interference user, RSRP
microthe RSRP that received from Microcell by interference user, RSRP
thresholdfor default threshold value.
Described basis treats that scheduling is subject to the number of interference user to judge that existing ABS can not meet and treats that scheduling is comprised by the demand of interference user: treat that scheduling is subject to the number of interference user to be greater than the carrying of downlink physical control channel PDCCH, existing ABS can not meet and treats that scheduling is subject to the demand of interference user.
Describedly comprised by the information of interference user to macro base station feedback, in load information, feed back and treat that scheduling is subject to the information of interference user to macro base station;
Or, in gap frame state information, feed back and treat that scheduling is subject to the information of interference user to macro base station;
Or, in newly-built message, feed back and treat that scheduling is subject to the information of interference user to macro base station.
Describedly treat that scheduling is comprised by the information of interference user: need to use the number of ABS and treat that scheduling is subject to the data to be transmitted amount of interference user.
Described macro base station is according to treating that scheduling is subject to the information of interference user to adjust ABS and comprises: treat that scheduling is subject to the data to be transmitted amount of interference user to obtain using the average data to be transmitted amount of ABS divided by the number that need to use ABS, need to use the average data to be transmitted amount of ABS to be greater than the average descending data to be transmitted amount of macro base station in existing subframe, macro base station sends abs mode adjustment information by X2 interface to micro-base station.
Describedly treat that scheduling is comprised by the information of interference user: treat that scheduling is subject to the number of interference user and treats that scheduling is subject to the data to be transmitted amount of interference user.
Described macro base station is according to treating that scheduling is subject to the information of interference user to adjust ABS and comprises: according to treating that scheduling is subject to the number of interference user to calculate the ABS that needs use;
Be subject to the data to be transmitted amount of interference user to obtain using the average data to be transmitted amount of ABS divided by the number that need to use ABS, need to use the average data to be transmitted amount of ABS to be greater than the average descending data to be transmitted amount of macro base station in existing subframe, macro base station sends abs mode adjustment information by X2 interface to micro-base station.
The described ABS using that needs equals to treat that scheduling is subject to the number of interference user divided by reference value;
Calculate first need to use the number of ABS time, reference value is determined according to user's mark;
Non-ly calculate need to use the number of ABS time first, reference value equals a number of users that PDCCH on average carries in last subframe.
Adjust in heterogeneous network an almost system for gap frame, described device comprises:
Micro-base station, the reference signal receiving intensity RSRP based on user UE feedback selects to be subject to interference user; According to treating that scheduling is subject to the number of interference user, judge that existing almost gap frame ABS can not meet to treat that scheduling is subject to the demand of interference user, feed back and treat that scheduling is subject to the information of interference user to macro base station;
Macro base station, the scheduling for the treatment of that receives the transmission of micro-base station is subject to the information of interference user, and according to treating that scheduling is subject to the information of interference user to adjust ABS.
Described micro-base station is further used for, and selects to meet RSRP
macrowith RSRP
microdifference be more than or equal to RSRP
thresholdbe subject to interference user, RSRP
macrothe RSRP that received from macrocell by interference user, RSRP
microthe RSRP that received from Microcell by interference user, RSRP
thresholdfor default threshold value.
Described micro-base station is further used for, and judges and treats that scheduling is subject to the number of interference user to be greater than the carrying of downlink physical control channel PDCCH, and existing ABS can not meet and treats that scheduling is subject to the demand of interference user.
Described micro-base station is further used for, and in load information, feeds back and treats that scheduling is subject to the information of interference user to macro base station;
Or, in gap frame state information, feed back and treat that scheduling is subject to the information of interference user to macro base station;
Or, in newly-built message, feed back and treat that scheduling is subject to the information of interference user to macro base station.
Described macro base station is further used for, by treating that scheduling is subject to the data to be transmitted amount of interference user to obtain using the average data to be transmitted amount of ABS divided by the number that need to use ABS, need to use the average data to be transmitted amount of ABS to be greater than the average descending data to be transmitted amount of macro base station in existing subframe, and send abs mode adjustment information by X2 interface to micro-base station.
Described macro base station is further used for, according to treating that scheduling is subject to the number of interference user to calculate the ABS that needs use; Obtain using the average data to be transmitted amount of ABS by the data to be transmitted amount that is subject to interference user divided by the number that need to use ABS, need to use the average data to be transmitted amount of ABS to be greater than the average descending data to be transmitted amount of macro base station in existing subframe, and send abs mode adjustment information by X2 interface to micro-base station.
From technique scheme, can find out, in embodiments of the present invention, the RSRP of micro-base station based on UE feedback selects to be subject to interference user, according to treating that scheduling is subject to the number of interference user, judging that existing almost gap frame ABS can not meet treats that scheduling is subject to the demand of interference user, feed back and treat that scheduling is subject to the information of interference user to macro base station, macro base station is according to treating that scheduling is subject to the information of interference user to adjust ABS.In the time that macro base station is adjusted ABS configuration, not only consider the situation of macro base station self, further contemplate and treat that scheduling is subject to the situation of interference user.The ABS configuration made like this, has met the demand of micro-base station side, has shortened the time delay that between macro base station and micro-base station, abs mode is adjusted, and has considered the throughput of system that the increase of ABS number brings and gain, thereby has improved the throughput of whole system.
Brief description of the drawings
Fig. 1 is the schematic diagram that is interfered of the UE in extended area in prior art;
Fig. 2 is the method for adjustment schematic flow sheet of ABS in embodiment of the present invention heterogeneous network;
Fig. 3 is the method for adjustment idiographic flow schematic diagram of ABS in embodiment of the present invention heterogeneous network;
Fig. 4 is the system configuration schematic diagram that the embodiment of the present invention is adjusted ABS in heterogeneous network.
Embodiment
For making the object, technical solutions and advantages of the present invention express clearlyer, below in conjunction with drawings and the specific embodiments, the present invention is further described in more detail.
In embodiments of the present invention, when definite user is for being subject to interference user, micro-base station is fed back and is treated that scheduling is subject to the information of interference user to macro base station, so that macro base station, in the time adjusting ABS configuration, is considered the concrete condition of micro-base station.Like this, in the time that macro base station is adjusted ABS configuration, according to treating that scheduling is subject to the number of interference user correspondingly to adjust ABS number, the ABS after adjustment is subject to the transmission of interference user data for micro-base station side, therefore shortened the time delay that between macro base station and micro-base station, abs mode is adjusted; And then judge whether to increase according to data to be transmitted amount and distribute ABS, thereby consider the throughput of system profit that the increase of ABS number brings, meet the demand of micro-base station side, improve the throughput of whole system.
Are the method for adjustment schematic flow sheets of ABS in heterogeneous network referring to accompanying drawing 2, specifically comprise the following steps:
Step 201, the RSRP feeding back based on UE select to be subject to interference user.
If macro base station is numbered 0, micro-base station is numbered i=1,2 ..., N.K the user that distributing in community, its set is designated as Ω, and Ω=Ω
0∪ Ω
1∪ ... ∪ Ω
n, wherein Ω
0for the UE being served by macro base station gathers, its UE number is made as K
0; Ω
i(i=1,2 ..., N) and be the UE set by i micro-base station service, its UE number is made as K
i.The normal transmission power of macro base station is P
eNB, the normal transmission power of micro-base station is P
pico, therefore the transmitting power of i node is P
i, have
i node (when i=0, represent macro base station, i ≠ 0 o'clock represent micro-base station i) and j user (j ∈ Ω) between path loss be expressed as h
i, j.
All UE measuring reference signals received powers.For each UEj (j=1,2 ..., K), its Connection Service community point is i, i.e. j ∈ Ω
i, the Reference Signal Received Power of its measurement is RSRP
i, j=h
i, jp
i, other access node i ' in the macrocell of measurement (i '=1,2 ..., the Reference Signal Received Power of N and i ' ≠ i) is RSRP
i ', j=h
i ', jp
i '; All UE feedback is from the RSRP information of diverse access point, for each mobile subscriber equipment j (j=1,2 ..., K), RSRP information separately (from micro-base station, macro base station) is fed back to its access station.
Being disturbed more serious UE, to be subject to interference user be from the RSRP of macro base station and the user who is greater than threshold value from the difference of the RSRP of micro-base station,
wherein RSRP
thresholdfor default threshold value.Generally RSRP
thresholdequal zero.Interference user is the user who needs to do to strengthen interference coordination, is desirably in the user of ABS transmission data.
Step 202, according to treating that scheduling is subject to the number of interference user, judge that existing ABS can not meet to treat that scheduling is subject to the demand of interference user.
Be subject to have in interference user need to transmit data be subject to interference user interference user to be dispatched.Treat that scheduling is subject to the number of interference user to be greater than the carrying of PDCCH, existing ABS can not meet and treats that scheduling is subject to the demand of interference user.For 10M hertz bandwidth, PDCCH carries 9-10 at the most treats that scheduling is subject to interference user.Generally, determine that according to user's mark the scheduling for the treatment of that can carry on PDCCH is subject to the number of interference user, is specially prior art.
Step 203, feed back and treat that scheduling is subject to the information of interference user to macro base station.
Treat that scheduling is comprised by the information of interference user and treats that scheduling is subject to the number of interference user maybe to need to use the number of ABS, and treat that scheduling is subject to the data to be transmitted amount of interference user.
If micro-base station is subject to the number of interference user to macro base station feedback, need macro base station to calculate in such a way the number that need to use ABS; If micro-base station need to be used the number of ABS to macro base station feedback, need micro-base station to calculate in such a way the number that need to use ABS.
According to treating that scheduling is subject to the number of interference user to calculate the number that need to use ABS.
First, need for example equitable proportion algorithm of corresponding dispatching algorithm to obtain the essential information of interference user to be dispatched, the essential information of interference user to be dispatched comprises the number that is subject to interference user, is subject to the data to be transmitted amount of interference user.
Need to use the number of ABS to calculate according to following mode.
For example, calculate need to use the number of ABS time first, treat that scheduling is subject to the number of interference user to equal to use the number of ABS divided by reference value, reference value is the maximum bearing capacity of PDCCH, and reference value is determined according to user's mark.For the bandwidth of 10M hertz, reference value maximum is 9 or 10.
If not calculate first the number that need to use ABS, first calculate the number of users that needs PDCCH on average to carry.According to the average bearing capacity of PDCCH in front once several subframes, as reference value, the number of users that PDCCH on average carries equals a number of users that PDCCH on average carries in last subframe.Treat that scheduling is subject to number of users that the number of interference user on average carries divided by a PDCCH to equal to use the number of ABS.
Micro-base station is fed back and is treated that scheduling is subject to the information of interference user to macro base station.The information that micro-base station is disturbed user to macro base station feedback has three kinds of modes.A kind of mode is: micro-base station with the X2 interface of macro base station on conventionally can feedback load information (load information), in load information, increase new IE, the content of IE treats that scheduling is subject to the information of interference user.The second way is: micro-base station with the X2 interface of macro base station on conventionally can feed back ABS state information (DL ABS Status information); in ABS Statusinformation, increase new IE, the content of IE treats that scheduling is subject to the information of interference user.The third mode is: increase newly-built message (ABS allocation reference), micro-base station is fed back and treated that scheduling is subject to the information of interference user to macro base station in newly-built message.
Step 204, macro base station are according to treating that scheduling is subject to the information of interference user to adjust ABS.
Macro base station treats that according to each micro-base station scheduling is subject to the information of interference user to adjust ABS, the ABS newly increasing brings more throughput of system profit, meet the demand of micro-base station side, shorten accordingly the time delay that the abs mode between macro base station and micro-base station is adjusted, and then improved the throughput of whole system including macro base station and micro-base station.
Describe technical scheme of the present invention in detail below in conjunction with accompanying drawing 3.
Interference user number in each subframe is added up in step 301, micro-base station.
Micro-base station is to monitoring in real time in community.Obtain being subject to the essential information of interference user according to for example equitable proportion algorithm of corresponding dispatching algorithm.And treat that scheduling is subject to interference user being subject between interference user to determine.The essential information of interference user to be dispatched comprises treats that scheduling is subject to the number of interference user maybe to need to use the number of ABS and index corresponding to data volume waiting for transmission.According to treating that scheduling is subject to the number of interference user to calculate the number that need to use ABS, detailed process is referring to step 202.
Step 302, judge whether to feed back to macro base station.
Judgement need to be fed back to macro base station, performs step 303; Otherwise, execution step 301.Treat that scheduling is subject to the number of interference user to be greater than the carrying of PDCCH, existing ABS can not meet and treats that scheduling is subject to the demand of interference user, needs to feed back to macro base station; Otherwise, treat that scheduling is subject to the number of interference user to be less than or equal to the carrying of PDCCH, without feeding back to macro base station.
The index question blank 1 (only as embodiment for reference) corresponding according to data volume waiting for transmission obtains data volume waiting for transmission.
The index value that table 1 ABS data to be transmitted amount is corresponding
| Index | Buffer Size(BS)value[bytes] | Index | Buffer Size(BS)value[bytes] |
| 0 | BS＝0 | 32 | 4940＜BS＜＝6074 |
| 1 | 0＜BS＜＝10 | 33 | 6074＜BS＜＝7469 |
| 2 | 10＜BS＜＝13 | 34 | 7469＜BS＜＝9185 |
| 3 | 13＜BS＜＝16 | 35 | 9185＜BS＜＝11294 |
| 4 | 16 BS＜＝19 | 36 | 11294＜BS＜＝13888 |
| 5 | 19＜BS＜＝23 | 37 | 13888＜BS＜＝17077 |
| 6 | 23＜BS＜＝29 | 38 | 17077＜BS＜＝20999 |
| 7 | 29＜BS＜＝35 | 39 | 20999＜BS＜＝25822 |
| 8 | 35＜BS＜＝43 | 40 | 25822＜BS＜＝31752 |
| 9 | 43＜BS＜＝53 | 41 | 31752＜BS＜＝39045 |
| 10 | 53＜BS＜＝65 | 42 | 39045＜BS＜＝48012 |
| 11 | 65＜BS＜＝80 | 43 | 48012＜BS＜＝59039 |
| 12 | 80＜BS＜＝98 | 44 | 59039＜BS＜＝72598 |
| 13 | 98＜BS＜＝120 | 45 | 72598＜BS＜＝89272 |
| 14 | 120＜BS＜＝147 | 46 | 89272＜BS＜＝109774 |
| 15 | 147＜BS＜＝181 | 47 | 109774＜BS＜＝134986 |
| 16 | 181＜BS＜＝223 | 48 | 134986＜BS＜＝165989 |
| 17 | 223＜BS＜＝274 | 49 | 165989＜BS＜＝204111 |
| 18 | 274＜BS＜＝337 | 50 | 204111＜BS＜＝250990 |
| 19 | 337＜BS＜＝414 | 51 | 250990＜BS＜＝308634 |
| 20 | 414＜BS＜＝509 | 52 | 308634＜BS＜＝379519 |
| 21 | 509＜BS＜＝625 | 53 | 379519＜BS＜＝466683 |
| 22 | 625＜BS＜＝769 | 54 | 466683＜BS＜＝573866 |
| 23 | 769＜BS＜＝945 | 55 | 573866＜BS＜＝705666 |
| 24 | 945＜BS＜＝1162 | 56 | 705666＜BS＜＝867737 |
| 25 | 1162＜BS＜＝1429 | 57 | 867737＜BS＜＝1067031 |
| 26 | 1429＜BS＜＝1757 | 58 | 1067031＜BS＜＝1312097 |
| 27 | 1757＜BS＜＝2161 | 59 | 1312097＜BS＜＝1613447 |
| 28 | 2161＜BS＜＝2657 | 60 | 1613447＜BS＜＝1984009 |
| 29 | 2657＜BS＜＝3267 | 61 | 1984009＜BS＜＝2439678 |
| 30 | 3267＜BS＜＝4017 | 62 | 2439678＜BS＜＝3000000 |
| 31 | 4017＜BS＜＝4940 | 63 | BS＞3000000 |
Feed back to macro base station by X2 interface step 303, micro-base station.
Micro-base station is fed back and is treated that scheduling is subject to the information of interference user to macro base station by the X2 interface between micro-base station and macro base station.There are three kinds of modes micro-base station referring to step 203 to macro base station feedback.Treat that scheduling is comprised by the information of interference user and treats that scheduling is subject to the number of interference user maybe to need to use the number of ABS, and be subject to the data to be transmitted amount of interference user.
Step 304, macro base station are collected the feedback of each micro-base station.
Macro base station receives the feedback that each micro-base station sends, and in view of micro-base station number of cell coverage area, adjusts and needs the regular hour, therefore to be adjusted in one-period etc.
Step 305, need to use the average data to be transmitted amount of ABS to be greater than the average descending data to be transmitted amount of macro base station in existing subframe.
Need to use the average data to be transmitted amount of ABS to be greater than the average descending data to be transmitted amount of macro base station in existing subframe, perform step 306; Otherwise, execution step 304.
Need to use the average data to be transmitted amount of ABS to equal to treat that scheduling is subject to the data to be transmitted amount of interference user divided by the number that need to use ABS, the scheduling for the treatment of is here subject to the data to be transmitted amount of interference user to refer to that macro base station receives the data to be transmitted amount sum that is subject to interference user of all micro-base stations.So just can obtain using the average data to be transmitted amount of ABS at needs.The average descending data to be transmitted amount of macro base station in existing subframe equals the summation of all descending data to be transmitted amounts of macro base station divided by the number of existing subframe.
Need to use the average descending data to be transmitted amount comparison in existing subframe of the average data to be transmitted amount of ABS and macro base station, if desired use the average data to be transmitted amount of ABS to be greater than the average descending data to be transmitted amount of macro base station in existing subframe, macro base station increases the number of ABS; If desired use the average data to be transmitted amount of ABS to be less than or equal to the average descending data to be transmitted amount of macro base station in existing subframe, macro base station does not increase the number of ABS.
Step 306, macro base station send ABS adjustment information by X2 interface to micro-base station.
Macro base station comprehensively judges whether to distribute ABS from the angle of throughput of system, and sends ABS adjustment information by X2 interface to micro-base station.Specifically how adjusting ABS is not key point of the present invention, therefore no longer describes in detail.
Step 301 is to the processing procedure of 303 micro-base stations; Step 304 is to 306 being processing procedures of macro base station.Step 301 is described by interference user to 306 for waiting to dispatch, the scheduling for the treatment of that macro base station can obtain micro-base station feedback is like this subject to the information of interference user, make macro base station in the time determining ABS configuration, consider interfered cell need to be on ABS the demand of transmission user.
Be to adjust in heterogeneous network the almost system configuration schematic diagram of gap frame referring to accompanying drawing 4, comprise:
Micro-base station, the reference signal receiving intensity RSRP based on user UE feedback selects to be subject to interference user; According to treating that scheduling is subject to the number of interference user, judge that existing almost gap frame ABS can not meet to treat that scheduling is subject to the demand of interference user, feed back and treat that scheduling is subject to the information of interference user to macro base station;
Macro base station, the scheduling for the treatment of that receives the transmission of micro-base station is subject to the information of interference user, and according to treating that scheduling is subject to the information of interference user to adjust ABS.
In addition, micro-base station is further used for, and selects to meet RSRP
macrowith RSRP
microdifference be more than or equal to RSRP
thresholdbe subject to interference user, RSRP
macrothe RSRP that received from macrocell by interference user, RSRP
microthe RSRP that received from Microcell by interference user, RSRP
thresholdfor default threshold value.Detailed process is referring to step 201.
Micro-base station judges treats that scheduling is subject to the number of interference user to be greater than the carrying of PDCCH, and existing ABS can not meet and treats that scheduling is subject to the demand of interference user.
Micro-base station is fed back and is treated that scheduling is subject to the information of interference user to macro base station in load information; Or feed back and treat that scheduling is subject to the information of interference user to macro base station in gap frame state information; Or feed back and treat that scheduling is subject to the information of interference user to macro base station in newly-built message.
Macro base station is further used for, by treating that scheduling is subject to the data to be transmitted amount of interference user to obtain using the average data to be transmitted amount of ABS divided by the number that need to use ABS, need to use the average data to be transmitted amount of ABS to be greater than the average descending data to be transmitted amount of macro base station in existing subframe, and send abs mode adjustment information by X2 interface to micro-base station.Macro base station is further used for, according to treating that scheduling is subject to the number of interference user to calculate the ABS that needs use; Obtain using the average data to be transmitted amount of ABS by the data to be transmitted amount that is subject to interference user divided by the number that need to use ABS, need to use the average data to be transmitted amount of ABS to be greater than the average descending data to be transmitted amount of macro base station in existing subframe, and send abs mode adjustment information by X2 interface to micro-base station.Specifically referring to step 203.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (11)
1. a method of adjustment for gap frame almost in heterogeneous network, is characterized in that, the method comprises:
The reference signal receiving intensity RSRP of micro-base station based on user UE feedback selects to be subject to interference user;
According to treating that scheduling is subject to the number of interference user, judge that existing almost gap frame ABS can not meet to treat that scheduling is subject to the demand of interference user, feed back and treat that scheduling is subject to the information of interference user to macro base station;
Macro base station is according to treating that scheduling is subject to the information of interference user to adjust ABS;
The described RSRP based on UE feedback selects comprised by interference user: select to meet RSRP
macrowith RSRP
microdifference be more than or equal to RSRP
thresholdbe subject to interference user, RSRP
macrothe RSRP that received from macrocell by interference user, RSRP
microthe RSRP that received from Microcell by interference user, RSRP
thresholdfor default threshold value;
Described basis treats that scheduling is subject to the number of interference user to judge that existing ABS can not meet and treats that scheduling is comprised by the demand of interference user: treat that scheduling is subject to the number of interference user to be greater than the carrying of downlink physical control channel PDCCH, existing ABS can not meet and treats that scheduling is subject to the demand of interference user.
2. the method for adjustment of gap frame almost in heterogeneous network according to claim 1, is characterized in that, describedly comprised by the information of interference user to macro base station feedback, in load information, feeds back and treats that scheduling is subject to the information of interference user to macro base station;
Or, in gap frame state information, feed back and treat that scheduling is subject to the information of interference user to macro base station;
Or, in newly-built message, feed back and treat that scheduling is subject to the information of interference user to macro base station.
3. according to the method for adjustment of gap frame almost in heterogeneous network described in claim 1 claim, it is characterized in that, described in treat that scheduling is comprised by the information of interference user: need to use the number of ABS and treat that scheduling is subject to the data to be transmitted amount of interference user.
4. the method for adjustment of gap frame almost in heterogeneous network according to claim 3, it is characterized in that, described macro base station is according to treating that scheduling is subject to the information of interference user to adjust ABS and comprises: treat that scheduling is subject to the data to be transmitted amount of interference user to obtain using the average data to be transmitted amount of ABS divided by the number that need to use ABS, need to use the average data to be transmitted amount of ABS to be greater than the average descending data to be transmitted amount of macro base station in existing subframe, macro base station sends abs mode adjustment information by X2 interface to micro-base station.
5. according to the method for adjustment of gap frame almost in heterogeneous network described in claim 1 claim, it is characterized in that, described in treat that scheduling is comprised by the information of interference user: treat that scheduling is subject to the number of interference user and treats that scheduling is subject to the data to be transmitted amount of interference user.
6. the method for adjustment of gap frame almost in heterogeneous network according to claim 5, it is characterized in that, described macro base station is according to treating that scheduling is subject to the information of interference user to adjust ABS and comprises: according to treating that scheduling is subject to the number of interference user to calculate the ABS that needs use;
Be subject to the data to be transmitted amount of interference user to obtain using the average data to be transmitted amount of ABS divided by the number that need to use ABS, need to use the average data to be transmitted amount of ABS to be greater than the average descending data to be transmitted amount of macro base station in existing subframe, macro base station sends abs mode adjustment information by X2 interface to micro-base station.
7. according to the method for adjustment of gap frame almost in heterogeneous network described in claim 3 or 6, it is characterized in that, the described ABS using that needs equals to treat that scheduling is subject to the number of interference user divided by reference value;
Calculate first need to use the number of ABS time, reference value is determined according to user's mark;
Non-ly calculate need to use the number of ABS time first, reference value equals a number of users that PDCCH on average carries in last subframe.
8. adjust in heterogeneous network an almost system for gap frame, it is characterized in that, described system comprises:
Micro-base station, the reference signal receiving intensity RSRP based on user UE feedback selects to be subject to interference user; According to treating that scheduling is subject to the number of interference user, judge that existing almost gap frame ABS can not meet to treat that scheduling is subject to the demand of interference user, feed back and treat that scheduling is subject to the information of interference user to macro base station;
Macro base station, the scheduling for the treatment of that receives the transmission of micro-base station is subject to the information of interference user, and according to treating that scheduling is subject to the information of interference user to adjust ABS;
Described micro-base station is further used for, and selects to meet RSRP
macrowith RSRP
microdifference be more than or equal to RSRP
thresholdbe subject to interference user, RSRP
macrothe RSRP that received from macrocell by interference user, RSRP
microthe RSRP that received from Microcell by interference user, RSRP
thresholdfor default threshold value;
Described micro-base station is further used for, and judges and treats that scheduling is subject to the number of interference user to be greater than the carrying of downlink physical control channel PDCCH, and existing ABS can not meet and treats that scheduling is subject to the demand of interference user.
9. adjust according to claim 8 in heterogeneous network the almost system of gap frame, it is characterized in that, described micro-base station is further used for, and in load information, feeds back and treats that scheduling is subject to the information of interference user to macro base station;
Or, in gap frame state information, feed back and treat that scheduling is subject to the information of interference user to macro base station;
Or, in newly-built message, feed back and treat that scheduling is subject to the information of interference user to macro base station.
10. adjust according to claim 8 in heterogeneous network the almost system of gap frame, it is characterized in that, described macro base station is further used for, by treating that scheduling is subject to the data to be transmitted amount of interference user to obtain using the average data to be transmitted amount of ABS divided by the number that need to use ABS, need to use the average data to be transmitted amount of ABS to be greater than the average descending data to be transmitted amount of macro base station in existing subframe, and send abs mode adjustment information by X2 interface to micro-base station.
11. adjust in heterogeneous network the almost system of gap frame according to claim 8, it is characterized in that, described macro base station is further used for, according to treating that scheduling is calculated by the number of interference user to need the ABS using; Obtain using the average data to be transmitted amount of ABS by the data to be transmitted amount that is subject to interference user divided by the number that need to use ABS, need to use the average data to be transmitted amount of ABS to be greater than the average descending data to be transmitted amount of macro base station in existing subframe, and send abs mode adjustment information by X2 interface to micro-base station.
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| CN103857040B9 (en) | 2012-11-28 | 2019-10-08 | 索尼公司 | For configuring the device and method and wireless communication heterogeneous network of quasi- blank subframe |
| US20140177558A1 (en) * | 2012-12-20 | 2014-06-26 | Futurewei Technologies, Inc. | System and Methods for Almost Blank Subframe (ABS) Density and Range Extension Optimization in Heterogeneous Networks |
| CN103945480B (en) * | 2013-01-17 | 2017-11-24 | 上海贝尔股份有限公司 | Eliminate the method, apparatus and system disturbed in heterogeneous network between picocell and highspeed user's equipment |
| WO2014146305A1 (en) * | 2013-03-22 | 2014-09-25 | 华为技术有限公司 | Almost blank subframe allocation method, apparatus, and system |
| CN104581736B (en) * | 2013-10-12 | 2019-02-26 | 普天信息技术有限公司 | A kind of downlink interference collaboration method, base station |
| CN104823472B (en) * | 2013-11-27 | 2019-04-19 | 华为技术有限公司 | A kind of method and apparatus of communication scheduling |
| CN104333909B (en) * | 2014-08-25 | 2018-02-09 | 上海交通大学 | Base stations in heterogeneous network selects and the dynamic time-domain resource distribution method based on load |
| CN106576367B (en) * | 2014-08-26 | 2020-02-14 | 华为技术有限公司 | Wireless communication method, device and system |
| KR102301826B1 (en) | 2014-08-27 | 2021-09-14 | 삼성전자 주식회사 | Wireless communication system and method for managing resource for interference coordication thereof |
| CN105517164A (en) * | 2014-09-24 | 2016-04-20 | 中兴通讯股份有限公司 | Interference adjustment processing method and device |
| CN104363660B (en) * | 2014-11-18 | 2018-01-26 | 中国联合网络通信集团有限公司 | A kind of network resource configuration method and device |
| CN106535208B (en) * | 2016-11-15 | 2019-07-09 | 中国联合网络通信集团有限公司 | A kind of open method and system of interference coordination function |
| CN106922027B (en) * | 2017-02-28 | 2020-02-11 | 重庆邮电大学 | ABS dynamic configuration method and system based on system stability |
| CN112217754B (en) * | 2020-10-15 | 2022-05-03 | 捷开通讯(深圳)有限公司 | Method, device and system for eliminating channel interference |
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