CN104185286B - LTE system downlink interference collaboration method, system and LTE base station - Google Patents
LTE system downlink interference collaboration method, system and LTE base station Download PDFInfo
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- CN104185286B CN104185286B CN201410401645.6A CN201410401645A CN104185286B CN 104185286 B CN104185286 B CN 104185286B CN 201410401645 A CN201410401645 A CN 201410401645A CN 104185286 B CN104185286 B CN 104185286B
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Abstract
The invention discloses a kind of LTE system downlink interference collaboration method, system and LTE base station, wherein method includes step：The adjacent area factor of this cell is corresponded to according to each adjacent cell of first Reference Signal Received Power calculating, then the interference instruction list of each adjacent cell is calculated, each interference instruction list is summed up again, final high interference Physical Resource Block is therefrom filtered out, interference coordination finally is carried out to edge customer and central user in this cell.The adjacent area factor of this cell is corresponded to by calculating each adjacent cell, annoyance level of the adjacent cell to this cell is reflected exactly, and the interference that each adjacent cell is calculated according to the adjacent area factor indicates list, so that different interference instruction lists is different because of the different adjacent area factors, ensure that subsequently can accurately screen final high interference Physical Resource Block, avoid and low interference Physical Resource Block is mistaken for final high interference Physical Resource Block, ensure that edge customer has higher handling capacity during interference coordination.
Description
【Technical field】
The present invention relates to mobile communication technology field, more particularly to a kind of LTE system downlink interference collaboration method, system
And LTE base station.
【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 descending, LTE specification provides RNTP (Relative Narrowband Tx Power, with respect to arrowband
Transmission power) parameter be used for support dynamic interference coordination.RNTP is that the one kind in high interference in future region is predicted, the minimum of renewal
Cycle is 20ms, by corresponding RB (Resource Block：Resource block) bit map realize, for example, represent height with " 1 "
Interference, low interference is represented with " 0 ".
It is typically according to relative RNTP and neighboring BS information in the existing technology that downlink interference collaboration is carried out using RNTP
It is determined that participate in Inter-Cell Interference Coordination each user PRB priority, scheduler module according to priority carry out scheduling of resource and
Power distribution.The priority of the PRB, it is according to adjacent area jamming power, adjacent area RNTP, local area RNTP, progress ICIC interactions
Calculating under the factors such as adjacent area number, this cell and PRB number of adjacent area obtains, because work(is disturbed in the more difficult accurate adjacent area that obtains
Rate, therefore each PRB priority is inaccurate, and by each adjacent area of the reasons such as distance and signal transmission power to this cell
Influence it is not consistent, be finally difficult to ensure that among the process of interference coordination this cell edge customer can obtain it is higher
Handling capacity.
【The content of the invention】
Based on this, it is necessary to be difficult to ensure that the edge customer of this cell among the process of interference coordination for prior art
The problem of higher handling capacity can be obtained, there is provided a kind of to effectively improve edge user throughput during interference coordination
LTE system downlink interference collaboration method.
A kind of LTE system downlink interference collaboration method, including step：
Obtain the first Reference Signal Received Power of the adjacent cell that this cell base station is determined；
The adjacent area factor of this cell is corresponded to according to each adjacent cell of first Reference Signal Received Power calculating；
The RNTP lists that adjacent cell is sent are received, and is obtained according to the adjacent area factor and the RNTP lists and is united currently
Count the interference instruction list of each adjacent cell in the cycle；
Each RB positions of the interference instruction list of each adjacent cell are summed up to form resultant interference instruction list, and from
Final high interference Physical Resource Block is screened in the resultant interference instruction list；
Interference coordination is carried out to this cell inward flange user and central user according to the final high interference Physical Resource Block.
Correspondingly, the present invention also provides a kind of LTE system downlink interference collaboration system, including：
Acquisition module, the first Reference Signal Received Power of the adjacent cell determined for obtaining this cell base station；
Computing module, for corresponding to the neighbour of this cell according to each adjacent cell of first Reference Signal Received Power calculating
Area's factor；
Indicating module is disturbed, for receiving the RNTP lists of adjacent cell transmission, and according to the adjacent area factor and described
RNTP lists obtain the interference instruction list of each adjacent cell within the current statistic cycle；
Screening module, for the interference of each adjacent cell to be indicated into each RB positions of list sum up to form resultant interference
List is indicated, and final high interference Physical Resource Block is screened from resultant interference instruction list；
Interference coordination module, for according to the final high interference Physical Resource Block to this cell inward flange user and center
User carries out interference coordination.
Adjacent area of the invention by corresponding to this cell according to each adjacent cell of first Reference Signal Received Power calculating
The factor, the interference of each adjacent cell within the current statistic cycle is then calculated according to the adjacent area factor and the RNTP lists and referred to
Show list, then each interference instruction list summed up, then therefrom filter out final high interference Physical Resource Block, finally according to
Interference coordination is carried out to edge customer and central user in this cell according to final high interference Physical Resource Block.Due to RNTP lists
Only include high interference mark and low interference identifies two kinds of values, can not integrate and weigh each adjacent cell to this cell disturbance journey
The difference of degree.The adjacent area factor of this cell is corresponded to by calculating each adjacent cell, reflects adjacent cell exactly to this cell
Annoyance level, and calculate according to the adjacent area factor and the RNTP lists interference of each adjacent cell within the current statistic cycle
Indicate list so that different interference instruction lists is different because of the different adjacent area factors, and ensure that subsequently can accurately screen
Final high interference Physical Resource Block, avoid and low interference Physical Resource Block is mistaken for final high interference Physical Resource Block, dry
It ensure that edge customer has higher handling capacity during disturbing coordination.
In addition, the present invention also provides a kind of LTE base station, including LTE system downlink interference collaboration system, the LTE descending
Interference coordination system includes：
Acquisition module, the first Reference Signal Received Power of the adjacent cell determined for obtaining this cell base station；
Computing module, for corresponding to the neighbour of this cell according to each adjacent cell of first Reference Signal Received Power calculating
Area's factor；
Indicating module is disturbed, for receiving the RNTP lists of adjacent cell transmission, and according to the adjacent area factor and described
RNTP lists obtain the interference instruction list of each adjacent cell within the current statistic cycle；
Screening module, for the interference of each adjacent cell to be indicated into each RB positions of list sum up to form resultant interference
List is indicated, and final high interference Physical Resource Block is screened from resultant interference instruction list；
Interference coordination module, for according to the final high interference Physical Resource Block to this cell inward flange user and center
User carries out interference coordination.
Assisted by interference of the described LTE system downlink interference collaboration system to this cell inward flange user and central user
Adjust, ensure that this Cell Edge User has higher handling capacity among the process of interference coordination.
【Brief description of the drawings】
Fig. 1 is a kind of flow chart of LTE system downlink interference collaboration method one embodiment of the present invention；
Fig. 2 is a kind of this cell of LTE system downlink interference collaboration method one embodiment of the present invention and adjacent cell position
Schematic diagram；
Fig. 3 is a kind of structured flowchart of LTE system downlink interference collaboration system one embodiment of the present invention.
【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 chart of LTE system downlink interference collaboration method one embodiment of the present invention.
A kind of LTE system downlink interference collaboration method, including step：
S101：Obtain the first Reference Signal Received Power of the adjacent cell that this cell base station is determined；
This cell base station start when can measure and preserve adjacent cell the first Reference Signal Received Power (RSRP,
Reference Signal Receiving Power).Base station also can sporadically or periodically be surveyed in use
Measure and update the first Reference Signal Received Power of adjacent cell.As shown in Fig. 2 it is a kind of descending interference of LTE system of the present invention
This cell of coordination approach one embodiment and adjacent cell position view.ENodeB0 includes four adjacent cells in Fig. 2, and this is not
It is eNodeB1, eNodeB2, eNodeB3 and eNodeB4, wherein, adjacent cell eNodeB1 RSRP01For 45, adjacent cell
ENodeB2 RSRP02For 47, adjacent cell eNodeB3 RSRP03For 47, adjacent cell eNodeB4 RSRP04For 46.
S102：The adjacent area factor of this cell is corresponded to according to each adjacent cell of first Reference Signal Received Power calculating；
The adjacent area factor ρij=RSRPij/max(RSRPi), wherein, i is this cell number, and j numbers for adjacent cell.Example
Such as, adjacent cell eNodeB1 corresponds to this cell eNodeB0 adjacent area factor ρ01=45/max (45,46,47)=0.957, similarly,
The adjacent area factor that each adjacent cell corresponds to this cell is calculated, wherein, adjacent cell eNodeB2 and adjacent cell eNodeB3 are corresponding originally small
Area eNodeB0 adjacent area factor ρ02=ρ03=47/max (45,46,47)=1, adjacent cell eNodeB4 correspond to this cell
ENodeB0 adjacent area factor ρ04=46/max (45,46,47)=0.979.
As can be seen here, because the distance of each adjacent cell base station to this cell base station can have difference, and different adjacent cells
Communication environments to the radiofrequency signal of this minizone are also different, so each adjacent cell corresponds to the adjacent area factor of this cell also not
Together.
S103：The RNTP lists that adjacent cell is sent are received, and are obtained according to the adjacent area factor and the RNTP lists
The interference instruction list of each adjacent cell in the current statistic cycle；
Receive the RNTP lists RNTP that adjacent cell is sentij, wherein, i is this cell number, and j numbers for adjacent cell.Then root
According to the adjacent area factor ρijWith the RNTP lists RNTPij, calculate the current statistic cycle in each adjacent cell interference instruction row
Table RNTPij,new=ρij*RNTPij, for example, adjacent cell eNodeB1 interference instruction list RNTP01,new=ρ01*RNTP01。
The RNTP lists that adjacent cell is sent only have high interference mark and low interference to identify two kinds of values, by by RNTP lists
The interference instruction list for obtaining adjacent cell is calculated with the product of the corresponding adjacent area factor so that the value in interference instruction list can
Influenceed by the adjacent area factor.
S104：Each RB positions of the interference instruction list of each adjacent cell are summed up to form resultant interference instruction row
Table, and screen final high interference Physical Resource Block from resultant interference instruction list；
Each RB positions of the interference instruction list of each adjacent cell are summed up to form resultant interference instruction list, i.e., most
Interference instruction list eventuallyWherein, n is the number of adjacent cell.From formula
It can be seen that, resultant interference instruction list is the average value of each interference instruction list, reacts the average interference degree of each RB positions.
Formed after resultant interference instruction list, indicate to screen final high interference physics money in list from the resultant interference
Source block, can be by respectively by the value of each RB positions compared with the screening thresholding of systemic presupposition, being believed that if more than screening thresholding
Physical Resource Block corresponding to the RB positions is final high interference Physical Resource Block, can also be selected according to the value order from high to low of RB positions
A certain proportion of Physical Resource Block is taken as final high interference Physical Resource Block.
S105：This cell inward flange user and central user are disturbed according to the final high interference Physical Resource Block
Coordinate.
Adjacent area of the invention by corresponding to this cell according to each adjacent cell of first Reference Signal Received Power calculating
The factor, then the adjacent area factor and the RNTP lists calculate the interference instruction row of each adjacent cell within the current statistic cycle
Table, then each interference instruction list is summed up, final high interference Physical Resource Block is then therefrom filtered out, it is last according to most
Whole high interference Physical Resource Block carries out interference coordination in this cell to edge customer and central user.Because RNTP lists are only wrapped
Include high interference mark and low interference identifies two kinds of values, can not integrate and weigh each adjacent cell to this cell disturbance degree
Difference.The adjacent area factor of this cell is corresponded to by calculating each adjacent cell, reflects interference of the adjacent cell to this cell exactly
Degree, and the interference of each adjacent cell within the current statistic cycle indicates according to the adjacent area factor and RNTP lists calculating
List so that different interference instruction lists is different because of the different adjacent area factors, and ensure that subsequently can accurately screen finally
High interference Physical Resource Block, avoid and low interference Physical Resource Block is mistaken for final high interference Physical Resource Block, assisted in interference
It ensure that edge customer has higher handling capacity during tune.
In one embodiment, indicate to screen final high interference region in list from resultant interference in above-mentioned steps S104
Step, specifically include：
S201：Respectively by resultant interference indicate RB positions in list with it is default estimate thresholding compared with, if RB positions
Value, which is more than, estimates thresholding, then is judged to estimating high interference Physical Resource Block by the Physical Resource Block corresponding to the RB positions；
Respectively by resultant interference indicate list in RB positions with it is default estimate thresholding compared with, if the value of RB positions is more than
Thresholding is estimated, then illustrates serious interference of the Physical Resource Block corresponding to the RB positions to adjacent cell, it is now that RB positions institute is right
The Physical Resource Block answered is judged to estimating high interference Physical Resource Block.
S202：If ratio of the number of high interference Physical Resource Block in all Physical Resource Block is estimated higher than default
Candidate's ratio, then according to order from high to low from estimate candidate's ratio is chosen in high interference Physical Resource Block physics provide
Source block, and it is determined as final high interference Physical Resource Block, otherwise, all high interference Physical Resource Block of estimating are determined as most
Whole high interference Physical Resource Block.
If estimating ratio of the number of 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 for estimating high interference Physical Resource Block is 20, then
It is 20% to estimate ratio of the number of high interference Physical Resource Block in all Physical Resource Block, if default candidate's ratio is
15%, then disturb in Physical Resource Block from candidate according to order from high to low and made by choosing candidate's ratio number Physical Resource Block
For final high interference Physical Resource Block, i.e., estimate high interference Physical Resource Block by 20 and arranged according to the value of corresponding RB positions
Sequence, choose 15 from high to low and estimate high interference Physical Resource Block as final high interference Physical Resource Block.
Preset if estimating ratio of the number of high interference Physical Resource Block in all Physical Resource Block and being less than or equal to
Candidate's ratio, using all high interference Physical Resource Block of estimating as final high interference Physical Resource Block.
It is used as final high interference Physical Resource Block by choosing default candidate's ratio number Physical Resource Block, can avoids
A large amount of Physical Resource Block can not use during final interference coordination the problem of, ensure side during final interference coordination
The handling capacity of edge user.
In one embodiment, above-mentioned steps S105 can specifically include step：
S301：Physical Resource Block in all Physical Resource Block in addition to the final high interference Physical Resource Block is set
For low interference Physical Resource Block；
Due to being typically that low interference Physical Resource Block first is distributed into user to use in LTE system, so first judging all
Low interference Physical Resource Block in Physical Resource Block, because only that final high interference physical resource can just be produced to adjacent cell and done
Disturb, so the Physical Resource Block in addition to the final high interference Physical Resource Block may be set to low interference Physical Resource Block.
S302：The Physical Resource Block of selecting system allocation proportion is as edge customer resource from low interference Physical Resource Block
Block, and the edge customer resource block is distributed into this cell inward flange user and used；
Generally, due to the quantity of low interference Physical Resource Block is greater than the quantity of final high interference Physical Resource Block, such as
All low interference Physical Resource Block are distributed on cell inward flange user and used by fruit, then central user will lack in cell
Physical Resource Block workable enough, therefore, it is necessary to the physics of selecting system allocation proportion provides from low interference Physical Resource Block
The edge customer resource block is distributed to this cell inward flange user and used by source block as edge customer resource block.
Wherein, edge customer resource block can select the principle based on equitable proportion to enter for the method for salary distribution of edge customer
OK.
S303：Physical Resource Block in all Physical Resource Block in addition to edge user resources block is distributed in this cell
Central user uses.
Edge customer resource is used as by the Physical Resource Block of the selecting system allocation proportion from low interference Physical Resource Block
Block, and the edge customer resource block is distributed into this cell inward flange user and used, avoid all low interference physics money
Source block is distributed on cell inward flange user and used and central user the problem of lacking workable Physical Resource Block enough, makes
The quantity of the Physical Resource Block in cell shared by central user can not be influenceed among the process of interference coordination by obtaining, and ensure that
The communication quality and handling capacity of central user.
In one embodiment, can be before above-mentioned steps S101, further, in addition to step：
S401：The measurement configuration information based on A3 events or A5 events is issued 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.
S402：Receive the user and information is reported based on A3 events or A5 events, and preserve and report this in information small
Second Reference Signal Received Power in area；
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.
S403：User's setting of preset ratio is chosen from the second Reference Signal Received Power according to ascending order
For edge customer.
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.
Referring to Fig. 3, it is a kind of structured flowchart of LTE system downlink interference collaboration system one embodiment of the present invention.
Acquisition module 301, the first Reference Signal Received Power of the adjacent cell determined for obtaining this cell base station；
Computing module 302, this cell is corresponded to for calculating each adjacent cell according to first Reference Signal Received Power
The adjacent area factor；
Indicating module 303 is disturbed, for receiving the RNTP lists of adjacent cell transmission, and according to the adjacent area factor and described
RNTP lists obtain the interference instruction list of each adjacent cell within the current statistic cycle；
Screening module 304, to be formed finally for the interference of each adjacent cell to be indicated into each RB positions of list sum up
Interference instruction list, and screen final high interference Physical Resource Block from resultant interference instruction list；
Interference coordination module 305, for according to the final high interference Physical Resource Block to this cell inward flange user and
Central user carries out interference coordination.
Each module of above-mentioned LTE system downlink interference collaboration system can realize above-mentioned LTE system downlink interference collaboration side
The corresponding steps and flow of method, here is omitted.
The first Reference Signal Received Power meter that the present invention is obtained by computing module 302 according to acquisition module 301
The adjacent area factor that each adjacent cell corresponds to this cell is calculated, is then referred to according to the adjacent area factor and the RNTP lists by interference
Show that module 303 calculates the interference instruction list of each adjacent cell within the current statistic cycle, then by screening module 304 to each
Interference instruction list sums up, and final high interference Physical Resource Block is then therefrom filtered out, finally by interference coordination module
305 carry out interference coordination in this cell according to final high interference Physical Resource Block to edge customer and central user.Due to
RNTP lists only include high interference mark and low interference identifies two kinds of values, can not integrate and weigh each adjacent cell to this cell not
With the difference of annoyance level.The adjacent area factor that each adjacent cell corresponds to this cell is calculated by computing module 302, reflected exactly
Annoyance level of the adjacent cell to this cell, and by disturbing indicating module 303 to be arranged according to the adjacent area factor and the RNTP
Meter calculates the interference instruction list of each adjacent cell within the current statistic cycle so that different interference instruction lists are because different
The adjacent area factor and it is different, ensure that subsequently can accurately screen final high interference Physical Resource Block, avoid low interference physics
Resource block is mistaken for final high interference Physical Resource Block, ensure that edge customer has higher gulp down during interference coordination
The amount of telling.
In one embodiment, above-mentioned screening module 304, it is preferable that including following submodule.
Estimate module, for respectively by resultant interference indicate list in RB positions with it is default estimate thresholding compared with,
If the value of RB positions, which is more than, estimates thresholding, the Physical Resource Block corresponding to the RB positions is judged to estimating high interference physical resource
Block；
Estimate module respectively by resultant interference indicate list in RB positions with it is default estimate thresholding compared with, if RB positions
Value be more than estimate thresholding, then illustrate that the Physical Resource Block corresponding to the RB positions to the serious interference of adjacent cell, now estimates mould
Physical Resource Block corresponding to the RB positions is judged to estimating high interference Physical Resource Block by block.
Determination module, if high for estimating ratio of the number of high interference Physical Resource Block in all Physical Resource Block
In default candidate's ratio, then candidate's ratio is chosen in high interference Physical Resource Block from estimating according to order from high to low
Physical Resource Block, and be determined as final high interference Physical Resource Block, otherwise, high interference Physical Resource Block estimated by all
It is determined as final high interference Physical Resource Block.
If estimating ratio of the number of 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 for estimating high interference Physical Resource Block is 20, then
It is 20% to estimate ratio of the number of high interference Physical Resource Block in all Physical Resource Block, if default candidate's ratio is
15%, then determination module according to order from high to low from candidate disturb Physical Resource Block in by choose candidate's ratio number physics
Resource block estimates value of the high interference Physical Resource Block according to corresponding RB positions as final high interference Physical Resource Block by 20
It is ranked up, chooses 15 from high to low and estimate high interference Physical Resource Block as final high interference Physical Resource Block.
Preset if estimating ratio of the number of high interference Physical Resource Block in all Physical Resource Block and being less than or equal to
Candidate's ratio, then determination module is using all high interference Physical Resource Block of estimating as final high interference Physical Resource Block.
Default candidate's ratio number Physical Resource Block is chosen by determination module and is used as final high interference Physical Resource Block,
It can avoid a large amount of Physical Resource Block can not use during final interference coordination the problem of, ensureing final interference coordination
During edge customer handling capacity.
In one embodiment, above-mentioned interference coordination module 305 can specifically include following submodule.
Setting module, for the physics in all Physical Resource Block in addition to the final high interference Physical Resource Block to be provided
Source block is set as low interference Physical Resource Block；
Due in LTE system be typically first by it is low interference Physical Resource Block distribute to user use, so first judge so
Low interference Physical Resource Block in Physical Resource Block, because only that final high interference physical resource can just be produced to adjacent cell and done
Disturb, so the Physical Resource Block in addition to the final high interference Physical Resource Block may be set to low interference Physical Resource Block.
First distribute module, the Physical Resource Block conduct for the selecting system allocation proportion from low interference Physical Resource Block
Edge customer resource block, and the edge customer resource block is distributed into this cell inward flange user and used；
Generally, due to the quantity of low interference Physical Resource Block is greater than the quantity of final high interference Physical Resource Block, such as
All low interference Physical Resource Block are distributed on cell inward flange user and used by fruit, then central user will lack in cell
Physical Resource Block workable enough, therefore, it is necessary to the physics of selecting system allocation proportion provides from low interference Physical Resource Block
The edge customer resource block is distributed to this cell inward flange user and used by source block as edge customer resource block.
Wherein, edge customer resource block can select the principle based on equitable proportion to enter for the method for salary distribution of edge customer
OK.
Second distribute module, for the Physical Resource Block in all Physical Resource Block in addition to edge user resources block to be divided
Central user uses in this cell of dispensing.
By the first distribute module, the Physical Resource Block of selecting system allocation proportion is used as from low interference Physical Resource Block
Edge customer resource block, and the edge customer resource block is distributed into this cell inward flange user and used, avoiding will be all
Low interference Physical Resource Block is distributed on cell inward flange user use and central user will lack physics money workable enough
The problem of source block so that the Physical Resource Block in cell shared by central user can not be influenceed among the process of interference coordination
Quantity, ensure that the communication quality and handling capacity of central user.
In one embodiment, can be before above-mentioned steps S101, further, in addition to step：
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.
Module is chosen, 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.
Choose module to be ranked up the second Reference Signal Received Power of reporting of user, 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 choose 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.
A kind of LTE base station, including the LTE system downlink interference collaboration system described in any of the above-described embodiment.
Assisted by interference of the described LTE system downlink interference collaboration system to this cell inward flange user and central user
Adjust, ensure that this Cell Edge User has higher handling capacity among the process of interference coordination.
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 (9)
1. a kind of LTE system downlink interference collaboration method, it is characterised in that including step：
Obtain the first Reference Signal Received Power of the adjacent cell that this cell base station is determined；
The adjacent area factor of this cell is corresponded to according to each adjacent cell of first Reference Signal Received Power calculating；Wherein, it is described
The adjacent area factor is the first Reference Signal Received Power of adjacent cell corresponding to this cell and the first reference signal of all adjacent cells
The ratio of maximum in receiving power；
The RNTP lists that adjacent cell is sent are received, and are obtained according to the adjacent area factor and the RNTP lists in current statistic week
The interference instruction list of each adjacent cell in phase；Wherein, the interference instruction list of each adjacent cell is the adjacent area factor
With the product of the RNTP lists；
Each RB positions of the interference instruction list of each adjacent cell are summed up into averaging and form resultant interference instruction list, and
Indicate to screen final high interference Physical Resource Block in list from the resultant interference；
Interference coordination is carried out to this cell inward flange user and central user according to the final high interference Physical Resource Block.
2. LTE system downlink interference collaboration method according to claim 1, it is characterised in that described to refer to from resultant interference
Show the step of final high interference Physical Resource Block is screened in list, specifically include：
Respectively by resultant interference indicate RB positions in list with it is default estimate thresholding compared with, if the value of RB positions is more than estimating
Thresholding, then the Physical Resource Block corresponding to the RB positions is judged to estimating high interference Physical Resource Block；
If estimating ratio of the number of 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 estimating Physical Resource Block that candidate's ratio is chosen in high interference Physical Resource Block, and will
It is determined as final high interference Physical Resource Block, otherwise, all high interference Physical Resource Block of estimating is determined as into final high interference
Physical Resource Block.
3. LTE system downlink interference collaboration method according to claim 1, it is characterised in that described according to described final
The step of high interference Physical Resource Block carries out interference coordination to this cell inward flange user and central user, specifically includes：
Physical Resource Block in all Physical Resource Block in addition to the final high interference Physical Resource Block is set as low interference
Physical Resource Block；
From the low Physical Resource Block for disturbing selecting system allocation proportion in Physical Resource Block as edge customer resource block, and should
Edge customer resource block distributes to this cell inward flange user use；
Physical Resource Block in all Physical Resource Block in addition to edge user resources block is distributed into central user in this cell
Use.
4. LTE system downlink interference collaboration method according to claim 1, it is characterised in that in described this cell of acquisition
Before first Reference Signal Received Power step of the adjacent cell that base station is determined, in addition to step：
The measurement configuration information based on A3 events or A5 events is issued to the user for accessing this cell；
Receive the user and information is reported based on A3 events or A5 events, and preserve and report second of this cell in information to join
Examine signal reception power；
The user for choosing preset ratio from the second Reference Signal Received Power according to ascending order is set as that edge is used
Family.
A kind of 5. LTE system downlink interference collaboration system, it is characterised in that including：
Acquisition module, the first Reference Signal Received Power of the adjacent cell determined for obtaining this cell base station；
Computing module, for according to first Reference Signal Received Power calculate each adjacent cell correspond to the adjacent area of this cell because
Son；Wherein, first Reference Signal Received Power and all adjacent cells of the adjacent area factor for adjacent cell corresponding to this cell
The ratio of maximum in first Reference Signal Received Power；
Indicating module is disturbed, is arranged for receiving the RNTP lists of adjacent cell transmission, and according to the adjacent area factor and the RNTP
Table obtains the interference instruction list of each adjacent cell within the current statistic cycle；Wherein, the interference instruction of each adjacent cell
List is the adjacent area factor and the product of the RNTP lists；
Screening module, it is final dry for the interference of each adjacent cell to be indicated into each RB positions of list sum up averaging formation
Instruction list is disturbed, and final high interference Physical Resource Block is screened from resultant interference instruction list；
Interference coordination module, for according to the final high interference Physical Resource Block to this cell inward flange user and central user
Carry out interference coordination.
6. LTE system downlink interference collaboration system according to claim 5, it is characterised in that the screening module is specific
Including：
Estimate module, for respectively by resultant interference indicate list in RB positions with it is default estimate thresholding compared with, if RB
The value of position, which is more than, estimates thresholding, then is judged to estimating high interference Physical Resource Block by the Physical Resource Block corresponding to the RB positions；
Determination module, if for estimating ratio of the number of high interference Physical Resource Block in all Physical Resource Block higher than pre-
If candidate's ratio, then according to order from high to low from estimating thing that candidate's ratio is chosen in high interference Physical Resource Block
Resource block is managed, and is determined as final high interference Physical Resource Block, otherwise, all high interference Physical Resource Block of estimating are judged
For final high interference Physical Resource Block.
7. LTE system downlink interference collaboration system according to claim 5, it is characterised in that the interference coordination module
Specifically include：
Setting module, for by the Physical Resource Block in all Physical Resource Block in addition to the final high interference Physical Resource Block
It is set as low interference Physical Resource Block；
First distribute module, the Physical Resource Block conduct for the default allocation proportion of selecting system from low interference Physical Resource Block
Edge customer resource block, and the edge customer resource block is distributed into this cell inward flange user and used；
Second distribute module, for the Physical Resource Block in all Physical Resource Block in addition to edge user resources block to be distributed to
Central user uses in this cell.
8. LTE system downlink interference collaboration system according to claim 5, it is characterised in that in described this cell of acquisition
Before first Reference Signal Received Power step of the adjacent cell that base station is determined, further also include step：
Module is issued, for issuing the measurement configuration information based on A3 events or A5 events to the user for accessing this cell；
Preserving module is received, information is reported based on A3 events or A5 events for receiving the user, and preserve and notify
Second Reference Signal Received Power of this cell in breath；
Module is chosen, for choosing the user of preset ratio from the second Reference Signal Received Power according to ascending order
It is set as edge customer.
9. a kind of LTE base station, it is characterised in that including the descending interference association of the LTE system as described in any one of claim 5 to 8
Adjusting system.
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| CN111385861B (en) * | 2018-12-29 | 2023-06-23 | 普天信息技术有限公司 | Method and device for coordinating downlink traffic channel interference |
| CN113891447B (en) * | 2020-07-03 | 2023-09-26 | 大唐移动通信设备有限公司 | Uplink resource allocation method and device |
| CN115314911B (en) * | 2021-05-07 | 2023-09-05 | 中国移动通信集团有限公司 | Communication method, device, equipment and computer readable storage medium |
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