CN104185212B - LTE system inter-cell uplink interference coordination approach and system - Google Patents
LTE system inter-cell uplink interference coordination approach and system Download PDFInfo
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- CN104185212B CN104185212B CN201410401644.1A CN201410401644A CN104185212B CN 104185212 B CN104185212 B CN 104185212B CN 201410401644 A CN201410401644 A CN 201410401644A CN 104185212 B CN104185212 B CN 104185212B
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Abstract
The invention discloses a kind of LTE system inter-cell uplink interference coordination approach and system, wherein, methods described is directed to each target adjacent area, by calculate each edge customer to should target adjacent area the adjacent area factor, so that the list of Maintenance free edge customer collection can be achieved for HII lists corresponding to the generation of different adjacent areas, reduce the use of base station internal memory and reduce the cost of base station configuration, additionally, the average emitted power of each Physical Resource Block and prediction transmission power in the current statistic cycle are calculated according to the adjacent area factor, and by the way that prediction transmission power is generated into HII lists with the contrast of predetermined power thresholding, avoid Physical Resource Block used in simple geo-statistic edge customer in the prior art and generate the problem of HII lists cause HII inaccuracy, it ensure that the accuracy of the HII lists of generation.
Description
【Technical field】
The present invention relates to mobile communication technology field, more particularly to uplink interference coordination side between a kind of LET system cells
Method and system.
【Background technology】
The descending use OFDMA of LTE system (Orthogonal Frequency Division Multiple Access, just
Hand over frequency division multiple access), it is up using SC-FDMA (Single-carrier Frequency-Division Multiple
Access, single-carrier frequency division multiple access) technology is as transmission means.These multiple access technologies utilize the orthogonality between frequency so that
In theory, it is non-interfering between this community user.The interference of all users is mainly derived from other and uses identical frequency
The edge customer of the cell of resource, especially cell, the co-channel interference by neighbor cell are especially serious.LTE system will improve
Used with the performance for improving edge customer as an importance for improving throughput of system performance, and for how to improve edge
The performance at family, it is proposed that many solutions.Its frequency domain ICIC (Inter-Cell Interference
Coordination, Inter-Cell Interference Coordination) technology is exactly by a kind of interference coordination skill of frequency range orthogonalization used in edge customer
Art.
For up, LTE specification provides HII (High Interference Indicator, high interference instruction)
It is used to support dynamic interference coordination with OI (Overload Indicator, overload instruction) parameter.Wherein HII is to high level cadre in future
Disturb a kind of prediction in region, the cycle minimum 20ms of renewal, by corresponding RB (Resource Bloc：Resource block) bit
Map to realize, for example, representing high interference with " 1 ", low interference is represented with " 0 ".
In the existing technology that uplink interference coordination is carried out using HII, typically edge customer is carried out further
Division in detail, the edge customer collection for different adjacent areas is distinguished, it is respective according to each adjacent area then in a measurement period
RB positions used in edge customer collection, for the HII list informations of each adjacent area, each adjacent area receives respective HII for generation
Information, then carry out interference coordination；In the prior art, each base station needs to safeguard multiple edge customer collection lists, it is necessary to substantial amounts of
Memory headroom so that height is configured to BTS hardware, in addition, merely generated by counting RB positions used in edge customer
HII information, due to lacking enough Rule of judgment, easily cause HII information inaccurate.
【The content of the invention】
Based on this, it is necessary to for safeguard in the prior art multiple edge customer collection lists need substantial amounts of memory headroom with
And the problem of HII information inaccuracy, there is provided between a kind of high LET system cells of the few HII information accuracies of committed memory resource
Row disturbance coordination method and system.
Up-link interference coordination method between a kind of LET system cells, including step：
Obtain the uplink transmission power of this Cell Edge User and edge customer reports the first reference letter of target adjacent area
Number receiving power；
For each target adjacent area, each edge customer is calculated to should mesh according to first Reference Signal Received Power
Mark the adjacent area factor of adjacent area；Wherein, the adjacent area factor ρi,j=RSRPij/max(RSRPi) i be adjacent area numbering, j be edge use
The terminal number at family, RSRPijTarget adjacent area i the first Reference Signal Received Power is reported for terminal j；According to the up transmitting
Power and the adjacent area factor calculate average emitted power of each Physical Resource Block within the current statistic cycle, and according to institute
State average emitted power and obtain prediction transmission power；Wherein, average emitted of each Physical Resource Block within the current statistic cycle
PowerPRB is Physical Resource Block, and k is physical resource block number, and n is current statistic week
Physical resource block dispatching number in phase, PmFor the uplink transmission power of m-th of subframe, ρmFor k-th PRB institutes in m-th of subframe
The adjacent area factor of the corresponding edge user for the target adjacent area；
The first HII lists corresponding with target adjacent area are generated according to prediction transmission power, wherein, the HII lists include
When predicting that transmission power is more than predetermined power thresholding, Physical Resource Block corresponds to the high interference mark of RB positions, in prediction transmission power
Physical Resource Block corresponds to the low interference mark of RB positions during less than or equal to predetermined power thresholding；
Interference coordination is carried out to system cell according to the first HII lists.
Correspondingly, the present invention also provides a kind of LTE system inter-cell uplink interference coordination system, including；
First acquisition module, uplink transmission power and edge customer for obtaining this Cell Edge User report target
First Reference Signal Received Power of adjacent area；
Computing module, for for each target adjacent area, each side to be calculated according to first Reference Signal Received Power
Edge user to should target adjacent area the adjacent area factor；Wherein, the adjacent area factor
I be adjacent area numbering, j be edge customer terminal number, RSRPijThe first reference signal for reporting target adjacent area i for terminal j receives
Power；
Prediction module, exist for calculating each Physical Resource Block according to the uplink transmission power and the adjacent area factor
Average emitted power in the current statistic cycle, and prediction transmission power is obtained according to the average emitted power；Wherein, each
Average emitted power of the Physical Resource Block within the current statistic cyclePRB provides for physics
Source block, k are physical resource block number, and n is the physical resource block dispatching number in the current statistic cycle, PmFor m-th subframe
Uplink transmission power, ρmIt is edge customer corresponding to k-th PRB in m-th of subframe for the adjacent area factor of the target adjacent area；
List Generating Module, for generating the first HII lists corresponding with target adjacent area according to prediction transmission power, its
In, the HII lists are included in the high interference that Physical Resource Block when prediction transmission power is more than predetermined power thresholding corresponds to RB positions
Mark, when predicting that transmission power is less than or equal to predetermined power thresholding, Physical Resource Block corresponds to the low interference mark of RB positions；
Coordination module, for carrying out interference coordination to system cell according to the first HII lists.
The present invention obtains the uplink transmission power of this Cell Edge User first and edge customer reports target adjacent area
First Reference Signal Received Power, and be directed to each target adjacent area, calculate each edge customer to should target adjacent area adjacent area
The factor；Then average emitted power of each Physical Resource Block within the current statistic cycle and prediction transmission power are calculated again；It
Afterwards, the first HII lists corresponding with target adjacent area are generated according to prediction transmission power；Finally, according to the first HII lists to system
Cell carries out interference coordination.For each target adjacent area, by calculate each edge customer to should target adjacent area adjacent area because
Son so that the list of Maintenance free edge customer collection can be achieved, for HII lists corresponding to the generation of different adjacent areas, to reduce base station
The use of internal memory and the cost for reducing base station configuration, additionally, each thing in the current statistic cycle is calculated according to the adjacent area factor
The average emitted power and prediction transmission power of resource block are managed, and by the way that prediction transmission power is contrasted with predetermined power thresholding
HII lists are generated, Physical Resource Block used in simple geo-statistic edge customer in the prior art is avoided and generates HII lists
The problem of causing HII inaccuracy, it ensure that the accuracy of the HII lists of generation.
【Brief description of the drawings】
Fig. 1 is a kind of flow chart of LTE system inter-cell uplink interference coordination approach one embodiment of the present invention；
Fig. 2 is a kind of edge customer signal of LTE system inter-cell uplink interference coordination approach one embodiment of the present invention
Figure；
Fig. 3 is the structured flowchart that a kind of LTE system inter-cell uplink interference of the present invention coordinates system one embodiment.
【Embodiment】
In order that the object, technical solutions and advantages of the present invention are clearer, the present invention is made below in conjunction with accompanying drawing into
One step it is described in detail.
Referring to Fig. 1, it is a kind of flow of LTE system inter-cell uplink interference coordination approach one embodiment of the present invention
Figure.
A kind of LTE system inter-cell uplink interference coordination approach, including step：
S101：Obtain the uplink transmission power of this Cell Edge User and edge customer reports the first of target adjacent area to join
Examine signal reception power；
The uplink transmission power includes the uplink transmission power of each subframe in the current statistic cycle, typically, for
For LET systems, Physical Resource Block is scheduling to every 1ms scheduling once, and each scheduling meeting forms different subframes, and counts week
Phase minimum 20ms, that is, obtaining the uplink transmission power of this Cell Edge User includes the up transmitting work(of at least one subframe
Rate.
Edge customer is dispatched periodically to the first Reference Signal Received Power of cell base station active reporting target adjacent area
(RSRP), as shown in Fig. 2 it is a kind of edge of LTE system inter-cell uplink interference coordination approach one embodiment of the present invention
User's schematic diagram.Three edge customer UE1, UE2 and UE3, the target adjacent area eNodeB1 that UE1 is reported in Fig. 2 under eNodeB0
RSRP11For 45；The RSRP for the target adjacent area eNodeB2 that UE2 is reported22For 47；UE3 targets adjacent area has two, wherein
ENodeB1 RSRP13For 44, eNodeB2 RSRP23For 45.
S102：For each target adjacent area, each edge customer pair is calculated according to first Reference Signal Received Power
Should target adjacent area the adjacent area factor；
Wherein, the adjacent area factor ρi,j=RSRPij/max(RSRPi), i numbers for adjacent area, and j is terminal number.For example,
For target adjacent area eNodeB1, UE1 adjacent area factor ρ11=45/max (45,43)=1, UE2 adjacent area factor ρ12=0/max
(44,45)=0, UE3 adjacent area factor ρ13=44/max (44,45)=0.978；It can be seen that from above-mentioned result of calculation, UE2 mesh
It is not eNodeB1 to mark adjacent area, so eNodeB1 is directed to, UE2 adjacent area factor ρ12For 0.
The like, calculating is directed to each target adjacent area, each edge customer to should target adjacent area the adjacent area factor.
S103：Each Physical Resource Block is calculated in current statistic according to the uplink transmission power and the adjacent area factor
Average emitted power in cycle, and prediction transmission power is obtained according to the average emitted power；
Wherein, each Physical Resource Block (PRB：Physical Resource Block) it is flat within the current statistic cycle
Equal transmission powerWherein, k is physical resource block number, and n is in the current statistic cycle
Physical resource block dispatching number, PmFor the uplink transmission power of m-th of subframe, ρmFor side corresponding to k-th PRB in m-th of subframe
The adjacent area factor of the edge user for the target adjacent area.
Calculate after obtaining average emitted power of each Physical Resource Block within the current statistic cycle, by the average emitted
Power is filtered processing, obtains prediction transmission power, specifically, the prediction transmission power PPRBk=α PPRBk,now+(1-α)
PPRBk,pass, wherein PPRBk,passFor the prediction transmission power of the upper measurement period Physical Resource Block, launch work(if calculating first
Rate is without the statistical result of last time, then PPRBk=PPRBk,now, α therein preferably takes 0.875.
S104：The first HII lists corresponding with target adjacent area are generated according to prediction transmission power, wherein, the HII lists
It is included in the high interference mark that Physical Resource Block when prediction transmission power is more than predetermined power thresholding corresponds to RB positions, launches in prediction
Physical Resource Block corresponds to the low interference mark of RB positions when power is less than or equal to predetermined power thresholding；
HII lists include two kinds of marks, and one is that high interference mark one is low interference mark, in the present embodiment, when
The prediction transmission power is more than predetermined power thresholding, then it is believed that the Physical Resource Block is high interference, now by serving cell
The first HII lists in the PRB pair answer RB mark be set to high interference, otherwise, it is believed that the Physical Resource Block is low interference, and
The RB marks that the PRB pair is answered in the first HII lists are set to low interference.
S105：Interference coordination is carried out to system cell according to the first HII lists.
The present invention obtains the uplink transmission power of this Cell Edge User first and edge customer reports target adjacent area
First Reference Signal Received Power, and each target adjacent area is directed to, calculated according to first Reference Signal Received Power each
Edge customer to should target adjacent area the adjacent area factor；Then further according to the uplink transmission power and the adjacent area factor meter
Average emitted power of each Physical Resource Block within the current statistic cycle is calculated, and prediction hair is obtained according to the average emitted work(
Penetrate power；Afterwards, the first HII lists corresponding with target adjacent area are generated according to prediction transmission power, wherein, the HII lists
It is included in the high interference mark that Physical Resource Block when prediction transmission power is more than predetermined power thresholding corresponds to RB positions, launches in prediction
Physical Resource Block corresponds to the low interference mark of RB positions when power is less than or equal to predetermined power thresholding；Finally, arranged according to the first HII
Table carries out interference coordination to system cell.For each target adjacent area, by calculating each edge customer to should target adjacent area
The adjacent area factor so that the list of Maintenance free edge customer collection i.e. can be achieved for different adjacent areas generation corresponding to HII lists, subtract
The use of base station internal memory is lacked and has reduced the cost of base station configuration, additionally, the current statistic cycle has been calculated according to the adjacent area factor
The average emitted power and prediction transmission power of interior each Physical Resource Block, and by the way that transmission power and predetermined power will be predicted
Thresholding contrast generation HII lists, avoid Physical Resource Block next life used in simple geo-statistic edge customer in the prior art
The problem of causing HII inaccuracy into HII lists, it ensure that the accuracy of the HII lists of generation.
In one embodiment, can be before above-mentioned steps S101, further, in addition to step：
S201：Edge customer of this cell for inter-cell uplink interference coordination is screened according to signal reception power.
The signal of intra-cell users transmitting is received, this cell is screened according to signal reception power and is used for inter-cell uplink interference
The edge customer of coordination, if signal reception power is less than default power threshold, it is believed that the user is edge customer.
This cell is filtered out for the edge customer that inter-cell uplink interference is coordinated by signal reception power, helps to sieve
Select real edge customer so that the HII list informations being subsequently generated are more accurate.
Preferably, above-mentioned steps S201 can be realized by following steps：
S301：The measurement configuration information based on A3 events or A5 events is issued to the user for accessing this cell；
Wherein, the A3 times are that adjacent area is better than the offset relative to serving cell.A5 events are serving cell ratio
Absolute thresholding lower limit is poor, and adjacent area is better than absolute thresholding higher limit.The measurement configuration information includes A3 events or A5 events
On call time and report number, it is preferable that called time on described and be arranged to periodic report, report number be set to infinitely on
Report.
S302：Receive described intra-cell users and information is reported based on A3 events or A5 events, and preserve and notify
Second Reference Signal Received Power of this cell in breath；
When A3 or A5 events occur, user actively sends to cell base station and reports information, wherein described report information
The second reference information receiving power including this cell, then this cell base station receive described intra-cell users and be based on A3 events
Or A5 events report information.
S303：User's setting of preset ratio is chosen from the second Reference Signal Received Power according to ascending order
For the edge customer of this cell.
Second Reference Signal Received Power of reporting of user is ranked up, then according to ascending order from second
The user that preset ratio is chosen in Reference Signal Received Power is set as the edge customer of this cell.
Pass through the second reference signal according to ascending order from based on A3 events or A5 reporting events information
The user that preset ratio is chosen in receiving power is set as the edge customer of this cell so that base station can implement to track this cell
The state of user, when community user is edge customer, it is edge customer that can identify the user as early as possible, ensure that follow-up life
Into the accuracy of HII lists.
In one embodiment, above-mentioned steps S105 can specifically include step：
S401：The first HII lists are sent to the target adjacent area and carry out interference coordination；
After the first HII lists are generated, the first HII lists are sent to the target adjacent area so that target adjacent area can
To carry out interference coordination to the Physical Resource Block in target adjacent area according to the first HII lists.
S402：The 2nd HII lists that adjacent area is directed to the generation of this cell are received, according to the 2nd HII lists received to this
Edge customer in cell carries out interference coordination.
The 2nd HII lists that adjacent area is directed to the generation of this cell are received, wherein the generation method of the second HII lists and the
One HII lists are identical.This cell base station is according to the 2nd HII lists received to thing used in the edge customer in this cell
Manage resource block and carry out interference coordination.
Preferentially, above-mentioned steps S402, step can specifically be included：
S501：Each RB positions in 2nd HII lists of all receptions are summed up, if the value of some RB position is more than in advance
If candidate's threshold value, then the Physical Resource Block corresponding to the RB positions is determined as candidate's high interference Physical Resource Block；
Because this cell has multiple adjacent areas, thus the 2nd received HII lists have it is multiple, by the second of all receptions
Each RB positions in HII lists sum up, therefrom to determine high interference Physical Resource Block.If the value of some RB position is more than default
Candidate's threshold value, then the Physical Resource Block corresponding to the RB positions is determined as candidate's high interference Physical Resource Block.
S502：If ratio of the number of candidate's high interference Physical Resource Block in all Physical Resource Block is higher than default
Candidate's ratio, then provided according to order from high to low from candidate's high interference Physical Resource Block by choosing candidate's ratio number physics
Source block is as final high interference Physical Resource Block, otherwise, using all candidate's high interference Physical Resource Block as final high interference thing
Manage resource block；
If ratio of the number of candidate's high interference Physical Resource Block in all Physical Resource Block is higher than default candidate
Ratio, for example, all physics number of resource blocks amounts of this cell are 100, and the number of candidate's high interference Physical Resource Block is 20, then
Ratio of the number of candidate's high interference Physical Resource Block in all Physical Resource Block is 20%, if default candidate's ratio is
15%, then according to order from high to low from candidate's high interference Physical Resource Block by choose candidate's ratio number Physical Resource Block
As final high interference Physical Resource Block, i.e., 20 candidate's high interference Physical Resource Block are arranged according to the corresponding RB values for being
Sequence, 15 candidate's high interference Physical Resource Block are chosen from high to low as final high interference Physical Resource Block.
If ratio of the number of candidate's high interference Physical Resource Block in all Physical Resource Block is less than or equal to default
Candidate's ratio, using all candidate's high interference Physical Resource Block as final high interference Physical Resource Block.
S503：Interference coordination is carried out to the edge customer in this cell according to the final high interference Physical Resource Block.
According to the final high interference Physical Resource Block, reduce edge customer and final high interference Physical Resource Block is accounted for
With to realize to the edge customer progress interference coordination in this cell.
It is used as final high interference Physical Resource Block by choosing default candidate's ratio number Physical Resource Block, can avoids
The problem of a large amount of Physical Resource Block can not use in final scheduling process, reduce while interference coordination effect is ensured dry
Disturb the complexity of coordination.
Referring to Fig. 3, it is the structure that a kind of LTE system inter-cell uplink interference of the present invention coordinates system one embodiment
Block diagram.
First acquisition module 401, uplink transmission power and edge customer for obtaining this Cell Edge User are reported
First Reference Signal Received Power of target adjacent area；
Computing module 402, for for each target adjacent area, being calculated according to first Reference Signal Received Power each
Edge customer to should target adjacent area the adjacent area factor；
Prediction module 403, for calculating each physical resource according to the uplink transmission power and the adjacent area factor
Average emitted power of the block within the current statistic cycle, and prediction transmission power is obtained according to the average emitted power；
List Generating Module 404, for generating the first HII lists corresponding with target adjacent area according to prediction transmission power,
Wherein, the HII lists are included in the high level cadre that Physical Resource Block when prediction transmission power is more than predetermined power thresholding corresponds to RB positions
Mark is disturbed, Physical Resource Block corresponds to the low interference mark of RB positions when predicting that transmission power is less than or equal to predetermined power thresholding；
Interference coordination module 405, for carrying out interference coordination to system cell according to the first HII lists.
Each module that above-mentioned LTE system inter-cell uplink interference coordinates system can be realized on above-mentioned LTE system minizone
The corresponding steps and flow of row disturbance coordination method, here is omitted.
The present invention obtains the uplink transmission power of this Cell Edge User by the first acquisition module 401 first and edge is used
Family reports the first Reference Signal Received Power of target adjacent area, and is directed to each target adjacent area by computing module 402, according to
First Reference Signal Received Power calculate each edge customer to should target adjacent area the adjacent area factor；Then again by pre-
Survey module 403 and each Physical Resource Block is calculated in the current statistic cycle according to the uplink transmission power and the adjacent area factor
Interior average emitted power, and prediction transmission power is obtained according to the average emitted work(；Afterwards, List Generating Module is passed through
404 generate the first HII lists corresponding with target adjacent area according to prediction transmission power, wherein, the HII lists are included in prediction
When transmission power is more than predetermined power thresholding Physical Resource Block correspond to RB positions high interference mark, prediction transmission power be less than or
Physical Resource Block corresponds to the low interference mark of RB positions during equal to predetermined power thresholding；Finally, the basis of interference coordination module 405 is passed through
First HII lists carry out interference coordination to system cell.For each target adjacent area, each side is calculated by computing module 402
Edge user to should target adjacent area the adjacent area factor so that the list of Maintenance free edge customer collection i.e. can be achieved is directed to different adjacent areas
HII lists corresponding to generation, reduce the use of base station internal memory and reduce the cost of base station configuration, additionally, according to adjacent area
The factor calculates the average emitted power of each Physical Resource Block and prediction transmission power in the current statistic cycle, and passes through prediction
Module 403 will predict transmission power and the contrast generation HII lists of predetermined power thresholding, avoid simple geo-statistic in the prior art
Physical Resource Block used in edge customer generates the problem of HII lists cause HII inaccuracy, ensure that the HII row of generation
The accuracy of table.
In one embodiment, LTE system inter-cell uplink interference, which coordinates system, to include with lower module：
Screening module, used for screening this cell according to signal reception power for the edge that inter-cell uplink interference is coordinated
Family.
The signal of intra-cell users transmitting is received by screening module, this cell is screened for small according to signal reception power
The edge customer of section uplink interference coordination, if signal reception power is more than default power threshold, it is believed that the user
For edge customer.
Screening module filters out edge customer of this cell for inter-cell uplink interference coordination by signal reception power,
Help to filter out real edge customer so that the HII list informations being subsequently generated are more accurate.
Preferably, above-mentioned screening module includes following submodule.
Module is issued, for issuing the measurement configuration information based on A3 events or A5 events to the user for accessing this cell；
Wherein, the A3 events are that adjacent area is better than the offset relative to serving cell.A5 events are serving cell ratio
Absolute thresholding lower limit is poor, and adjacent area is better than absolute thresholding higher limit.The measurement configuration information includes A3 events or A5 events
On call time and report number, it is preferable that called time on described and be arranged to periodic report, report number be set to infinitely on
Report.
Receiving module, information is reported based on A3 events or A5 events for receiving described intra-cell users, and protected
Deposit the second Reference Signal Received Power for reporting this cell in information；
When A3 or A5 events occur, user actively sends to cell base station and reports information, wherein described report information
The second reference information receiving power including this cell, then this cell base station received in described cell and used by receiving module
Family reports information based on A3 events or A5 events.
Setting module, for choosing preset ratio from the second Reference Signal Received Power according to ascending order
User is set as the edge customer of this cell.
Second Reference Signal Received Power of reporting of user is ranked up by setting module, then according to ascending suitable
The user that sequence chooses preset ratio from the second Reference Signal Received Power is set as the edge customer of this cell.
By setting module according to ascending order from based on A3 events or A5 reporting events information second
The user that preset ratio is chosen in Reference Signal Received Power is set as the edge customer of this cell so that base station can implement with
The state of this community user of track, when community user is edge customer, it is edge customer that can identify the user as early as possible, is ensured
It is subsequently generated the accuracy of HII lists.
In one embodiment, above-mentioned interference coordination module 405 can specifically include：
Sending module, interference coordination is carried out for the first HII lists to be sent into the target adjacent area；
After the first HII lists are generated, the first HII lists are sent to the target adjacent area by sending module so that mesh
Interference coordination can be carried out according to the first HII lists to the Physical Resource Block in target adjacent area by marking adjacent area.
Coordination module is received, the 2nd HII lists of this cell generation are directed to for receiving adjacent area, according to second received
HII lists carry out interference coordination to the edge customer in this cell.
Receive Coordination module and receive the 2nd HII lists that adjacent area is directed to the generation of this cell, wherein the second HII lists
Generation method is identical with the first HII lists.This cell base station is by receiving Coordination module according to the 2nd HII lists pair received
Physical Resource Block used in edge customer in this cell carries out interference coordination.
Preferentially, above-mentioned reception Coordination module, specifically includes following submodule：
Add and module, summed up for each RB positions in the 2nd HII lists by all receptions, if some RB position
Value is more than default candidate's threshold value, then the Physical Resource Block corresponding to the RB positions is determined as into candidate's high interference Physical Resource Block；
Because this cell has multiple adjacent areas, thus the 2nd received HII lists have it is multiple, by adding institute with module
There are each RB positions in the 2nd HII lists of reception to sum up, therefrom to determine high interference Physical Resource Block.If some RB position
Value be more than default candidate's threshold value, then the Physical Resource Block corresponding to the RB positions is determined as candidate's high interference physical resource
Block.
Setting module, if ratio of the number for candidate's high interference Physical Resource Block in all Physical Resource Block is high
In default candidate's ratio, then according to order from high to low from candidate's high interference Physical Resource Block by choosing candidate's ratio
Number Physical Resource Block is as final high interference Physical Resource Block, otherwise, using all candidate's high interference Physical Resource Block as final
High interference Physical Resource Block；
If ratio of the number of candidate's high interference Physical Resource Block in all Physical Resource Block is higher than default candidate
Ratio, for example, all physics number of resource blocks amounts of this cell are 100, and the number of candidate's high interference Physical Resource Block is 20, that
Ratio of the number of candidate's high interference Physical Resource Block in all Physical Resource Block is 20%, if default candidate's ratio is
15%, then by setting module according to order from high to low from candidate's high interference Physical Resource Block by choosing candidate's ratio
Number Physical Resource Block is as final high interference Physical Resource Block, i.e., by 20 candidate's high interference Physical Resource Block according to corresponding RB
For value be ranked up, from high to low choose 15 candidate's high interference Physical Resource Block as final high interference Physical Resource Block.
If ratio of the number of candidate's high interference Physical Resource Block in all Physical Resource Block is less than or equal to default
Candidate's ratio, setting module is using all candidate's high interference Physical Resource Block as final high interference Physical Resource Block.
Coordination module, for being disturbed according to the final high interference Physical Resource Block the edge customer in this cell
Coordinate.
Coordination module reduces edge customer to final high interference physical resource according to the final high interference Physical Resource Block
The occupancy of block, interference coordination is carried out to the edge customer in this cell to realize.
Default candidate's ratio number Physical Resource Block is chosen by setting module and is used as final high interference Physical Resource Block,
It can avoid in final scheduling process, the problem of a large amount of Physical Resource Block can not use, ensure interference coordination effect
Reduce the complexity of interference coordination simultaneously.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of LTE system inter-cell uplink interference coordination approach, it is characterised in that comprise the following steps：
Obtain the uplink transmission power of this Cell Edge User and edge customer reports the first reference signal of target adjacent area to connect
Receive power；
For each target adjacent area, according to first Reference Signal Received Power calculate each edge customer to should target it is adjacent
The adjacent area factor in area；Wherein, the adjacent area factor ρi,j=RSRPij/max(RSRPi), i numbers for adjacent area, and j is edge customer
Terminal number, RSRPijTarget adjacent area i the first Reference Signal Received Power is reported for terminal j；
Each Physical Resource Block is calculated within the current statistic cycle according to the uplink transmission power and the adjacent area factor
Average emitted power, and prediction transmission power is obtained according to the average emitted power；Wherein, each Physical Resource Block is current
Average emitted power in measurement periodPRB is Physical Resource Block, and k is physical resource
Block number, n be the current statistic cycle in physical resource block dispatching number, PmFor the uplink transmission power of m-th of subframe, ρmFor
The adjacent area factor of the edge customer corresponding to k-th of PRB for the target adjacent area in m-th of subframe；
The first HII lists corresponding with target adjacent area are generated according to prediction transmission power, wherein, the HII lists are included in pre-
The high interference mark that Physical Resource Block when transmission power is more than predetermined power thresholding corresponds to RB positions is surveyed, is less than in prediction transmission power
Or Physical Resource Block corresponds to the low interference mark of RB positions during equal to predetermined power thresholding；
Interference coordination is carried out to system cell according to the first HII lists.
2. LTE system inter-cell uplink interference coordination approach according to claim 1, it is characterised in that described to obtain this
The uplink transmission power and edge customer of Cell Edge User report the first Reference Signal Received Power step of target adjacent area
Before, further including step：
Edge customer of this cell for inter-cell uplink interference coordination is screened according to signal reception power.
3. LTE system inter-cell uplink interference coordination approach according to claim 2, it is characterised in that the screening is originally
The edge customer step of cell, is specifically included：
The measurement configuration information based on A3 events or A5 events is issued to the user for accessing this cell；
Receive described intra-cell users and information is reported based on A3 events or A5 events, and preserve and report this cell in information
The second Reference Signal Received Power；
The user for choosing preset ratio from the second Reference Signal Received Power according to ascending order is set as this cell
Edge customer.
4. LTE system inter-cell uplink interference coordination approach according to claim 1, it is characterised in that described according to
The step of one HII lists carry out interference coordination to system cell, specifically includes：
The first HII lists are sent to the target adjacent area and carry out interference coordination；
The 2nd HII lists that adjacent area is directed to the generation of this cell are received, according to the 2nd HII lists received to the side in this cell
Edge user carries out interference coordination.
5. LTE system inter-cell uplink interference coordination approach according to claim 4, it is characterised in that the basis connects
The step of the 2nd HII lists received carry out interference coordination to the edge customer in this cell, specifically includes：
Each RB positions in 2nd HII lists of all receptions are summed up, if the value of some RB position is more than default candidate's door
Limit value, then the Physical Resource Block corresponding to the RB positions is determined as candidate's high interference Physical Resource Block；
If ratio of the number of candidate's high interference Physical Resource Block in all Physical Resource Block is higher than default candidate's ratio,
Then according to order from high to low from candidate's high interference Physical Resource Block by choose candidate's ratio number Physical Resource Block conduct
Final high interference Physical Resource Block, otherwise, using all candidate's high interference Physical Resource Block as final high interference Physical Resource Block；
Interference coordination is carried out to the edge customer in this cell according to the final high interference Physical Resource Block.
6. a kind of LTE system inter-cell uplink interference coordinates system, it is characterised in that including：
First acquisition module, uplink transmission power and edge customer for obtaining this Cell Edge User report target adjacent area
The first Reference Signal Received Power；
Computing module, for for each target adjacent area, calculating each edge according to first Reference Signal Received Power and using
Family to should target adjacent area the adjacent area factor；Wherein, the adjacent area factor ρI, j=RSRPij/max(RSRPi), i compiles for adjacent area
Number, j be edge customer terminal number, RSRPijTarget adjacent area i the first Reference Signal Received Power is reported for terminal j；Prediction
Module, for calculating each Physical Resource Block in the current statistic cycle according to the uplink transmission power and the adjacent area factor
Interior average emitted power, and prediction transmission power is obtained according to the average emitted power；Wherein, each Physical Resource Block exists
Average emitted power in the current statistic cyclePRB is Physical Resource Block, and k is physics
Resource block number, n be the current statistic cycle in physical resource block dispatching number, PmFor the uplink transmission power of m-th of subframe,
ρmIt is edge customer corresponding to k-th of PRB in m-th of subframe for the adjacent area factor of the target adjacent area；
List Generating Module, for generating the first HII lists corresponding with target adjacent area according to prediction transmission power, wherein, institute
State HII lists and be included in the high interference mark that Physical Resource Block when prediction transmission power is more than predetermined power thresholding corresponds to RB positions,
When predicting that transmission power is less than or equal to predetermined power thresholding, Physical Resource Block corresponds to the low interference mark of RB positions；
Interference coordination module, for carrying out interference coordination to system cell according to the first HII lists.
7. LTE system inter-cell uplink interference according to claim 6 coordinates system, it is characterised in that also includes：
Screening module, for screening edge customer of this cell for inter-cell uplink interference coordination according to signal reception power.
8. LTE system inter-cell uplink interference according to claim 7 coordinates system, it is characterised in that the screening mould
Block specifically includes：
Module is issued, for issuing the measurement configuration information based on A3 events or A5 events to the user for accessing this cell；
Receiving module, information is reported based on A3 events or A5 events for receiving described intra-cell users, and preserved
Second Reference Signal Received Power of this cell in breath of notifying；
Setting module, for choosing the user of preset ratio from the second Reference Signal Received Power according to ascending order
It is set as this Cell Edge User.
9. LTE system inter-cell uplink interference according to claim 6 coordinates system, it is characterised in that the interference association
Mode transfer block specifically includes：
Sending module, interference coordination is carried out for the first HII lists to be sent into the target adjacent area；
Coordination module is received, the 2nd HII lists of this cell generation are directed to for receiving adjacent area, according to the 2nd HII received
List carries out interference coordination to the edge customer in this cell.
10. LTE system inter-cell uplink interference according to claim 9 coordinates system, it is characterised in that described to receive association
Mode transfer block specifically includes：
Add and module, summed up for each RB positions in the 2nd HII lists by all receptions, if the value of some RB position is big
In default candidate's threshold value, then the Physical Resource Block corresponding to the RB positions is determined as candidate's high interference Physical Resource Block；
Setting module, if ratio of the number for candidate's high interference Physical Resource Block in all Physical Resource Block is higher than pre-
If candidate's ratio, then according to order from high to low from candidate's high interference Physical Resource Block by choose candidate's ratio number thing
Resource block is managed as final high interference Physical Resource Block, otherwise, using all candidate's high interference Physical Resource Block as final high level cadre
Disturb Physical Resource Block；
Coordination module, for carrying out interference association to the edge customer in this cell according to the final high interference Physical Resource Block
Adjust.
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| CN108990079B (en) * | 2017-05-31 | 2021-12-03 | 中国移动通信集团设计院有限公司 | Method and device for acquiring inter-cell system interference strength |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102088723A (en) * | 2009-12-02 | 2011-06-08 | 大唐移动通信设备有限公司 | Method and device for determining high interference indication (HII) |
| CN102469592A (en) * | 2010-11-17 | 2012-05-23 | 中兴通讯股份有限公司 | Interference coordination method and interference coordination base station |
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| WO2014106320A1 (en) * | 2013-01-04 | 2014-07-10 | 华为技术有限公司 | Uplink interference coordination method and device |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102088723A (en) * | 2009-12-02 | 2011-06-08 | 大唐移动通信设备有限公司 | Method and device for determining high interference indication (HII) |
| CN102469592A (en) * | 2010-11-17 | 2012-05-23 | 中兴通讯股份有限公司 | Interference coordination method and interference coordination base station |
Non-Patent Citations (2)
| Title |
|---|
| Clarification on Uplink Power Control to support UL ICIC;Alcatel-Lucent;《3GPP TSG RAN WG1 #51 Meeting》;20071109;全文 * |
| Way forward on UL ICIC/Overload Indicator for LTE;Telecom Italia et al;《3GPP TSG RAN WG1 #51》;20071109;全文 * |
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