CN104378763B - A kind of disturbance coordination method and base station - Google Patents
A kind of disturbance coordination method and base station Download PDFInfo
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- CN104378763B CN104378763B CN201310349586.8A CN201310349586A CN104378763B CN 104378763 B CN104378763 B CN 104378763B CN 201310349586 A CN201310349586 A CN 201310349586A CN 104378763 B CN104378763 B CN 104378763B
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Abstract
The invention provides a kind of method of interference coordination and base station.This method includes：The frequency band of each cell is divided into edge band and center frequency-band；High interference sub-band is marked off in edge band, and the high interference sub-band in center frequency-band is set；And division edge customer and central user；Whether the current transmission quality of S1, detection user meets to require, if be unsatisfactory for, judges user-center user or edge customer, if central user, perform step S2, if edge customer, perform step S3；S2, judge the currently used frequency band of the user whether centered on high interference sub-band in frequency band, if it is, distributing the user using the frequency band in addition to high interference sub-band in center frequency-band, otherwise, distribute the user and use edge band, return to step S1；S3, the currently used transmission power of the user is improved, and the user high interference sub-band for using edge band, return to step S1 are distributed according to the watt level of user.The present invention can realize the real-time interference coordination in unique user granularity.
Description
Technical field
The present invention relates to the communication technology, and in particular to a kind of downlink interference collaboration method and base station.
Background technology
In a communications system, when using identical networking, whole system bandwidths, frequency band can be used between neighbor cell
Utilization rate is very high, but is used as cost, and identical networking can bring stronger inter-cell interference.How inter-cell interference is reduced, into
For an important subject of communication system.In order to ensure spectrum transmissions efficiency, improve user performance in cell, identical networking
Inter-cell interference is all suppressed using relative complex Inter-Cell Interference Coordination.
At present, the method for up-downgoing Inter-Cell Interference Coordination is：
First, the frequency band of each cell is divided into edge band and center frequency-band, the edge band of neighbor cell is mutually just
It is interleaved；
2nd, the pilot to powerratio of user is calculated（PPR, Pilot Power Ratio）,
If the PPR of the user is more than predetermined threshold value, the user is divided into central user, is its distributing center frequency
Band（Further, corresponding downlink interference collaboration, it is also necessary to set the user to use the down transmitting power of low-power）；
Otherwise, the user is divided into edge customer, is its allocations of edge frequency band（Further, corresponding descending interference association
Adjust, it is also necessary to set the user to use high-power down transmitting power）.
But as described above as can be seen that the method for existing Inter-Cell Interference Coordination is a kind of static configuration side
Method, i.e., by each user configuration it is in advance edge customer or central user, and correspondingly configure the frequency band that the user uses（Pin
To downlink interference collaboration, it is high power or low-power that the power that user uses, which is further configured,）, it is pre-configured with by this
Static method coordinate inter-cell interference.But actual wireless network environment is complicated and changeable, in the business reality of reality
In existing, the transmission quality of user may change at any time, such as, the actual transmissions quality of user is bad, but current does
Method once configures completion, will not carry out dynamic configuration modification for unique user again, can not be according to the actual transmissions matter of user
Amount carries out the real-time interference coordination in unique user granularity, so as to meet the actual requirement of business.
In addition, when finding that user's transmission quality is bad, it is also contemplated that modification static configuration parameter PPR temporarily, still,
If it have modified PPR, then many users belong to edge customer or central user and its corresponding frequency band and power all can
Change therewith, this adjustment does not have specific aim, even if helping to improve the transmission performance of certain customers, but often influences more
More users that need not be adjusted originally, so as to still realize the real-time interference coordination in unique user granularity, can not meet
The actual requirement of business.
The content of the invention
（One）The technical problem of solution
In view of the shortcomings of the prior art, the present invention provides a kind of disturbance coordination method and base station, can realize unique user
Real-time interference coordination in granularity.
（Two）Technical scheme
To realize object above, the present invention is achieved by the following technical programs：
A kind of method of interference coordination, the frequency band of each cell is divided into edge band and center frequency-band；In edge frequency
High interference sub-band is marked off in band, and the high interference sub-band in center frequency-band is set；And division edge customer and center
User, this method also include：
Whether the current transmission quality of S1, detection user meets to require, if be unsatisfactory for, judges that the user-center is used
Family or edge customer, if central user, step S2 is performed, if edge customer, perform step S3；
S2, judge the currently used frequency band of the user whether centered on high interference sub-band in frequency band, if it is, point
The frequency band in addition to high interference sub-band in center frequency-band is used with the user, otherwise, the user is distributed and uses edge band,
Return to step S1；
S3, the currently used transmission power of the user is improved, and distribute the user according to the watt level of user and use side
High interference sub-band in edge frequency band, return to step S1.
In step S1, whether the current transmission quality of the detection user meets to require to include：
The Block Error Rate of user's transmission is calculated, when the value of the Block Error Rate in the measurement period for specifying number is all higher than presetting
Threshold value, and the user using lowest-order modulation with encoding scheme MCS when, it is determined that the current transmission quality of the user is not
Meet to require, otherwise, it determines the transmission quality satisfaction requirement that the user is current.
When performing downlink interference collaboration,
Before step S1, further comprise：Defining the central user includes：First central user and the second center are used
Family, wherein,
For first central user using whole edge bands and whole center frequency-bands, the down transmitting power used is to be
The center low-power of system distribution；
Second central user uses the frequency in whole edge bands and the center frequency-band in addition to high interference sub-band
Band, the down transmitting power used are the center low-power of system distribution；
In the step S2, described distribution user uses the frequency band in addition to high interference sub-band in center frequency-band
Including：It is the first central user to determine the user, and first central user is changed into the second central user.
Before step S1, further comprise：
Defining the edge customer includes：First edge user, second edge user and the 3rd edge customer, wherein,
First edge user be used only the edge band in high interference sub-band, the down transmitting power used be
Increase preset value on the basis of the edge high power of system distribution；
For second edge user using whole edge bands, the down transmitting power used is the edge Gao Gong of system distribution
Rate；
For 3rd edge customer using whole edge bands, the down transmitting power used is the low work(in center of system distribution
Rate.
In step s 2, described distribution user is included using edge band：The second central user is determined that the user is, will
Second central user is changed to the 3rd edge customer；
Before judging it is edge customer, and perform the step S3, further comprise：Judge the user whether be
Second edge user, the edge high power distributed using system,
If it is, step S3 includes：The user is changed to first edge user from second edge user, correspondingly, carried
The currently used down transmitting power of the high user, distributes the user and uses the high interference sub-band in edge band；
If it is not, continue to judge the user as the 3rd edge customer or first edge user,
If the 3rd edge customer, step S3 includes：The currently used down transmitting power of the user is improved, then,
Determine whether current transmission power whether be system distribution edge high power, if system distribution edge Gao Gong
Rate, then the user is changed to second edge user from the 3rd edge customer；
If first edge user, step S3 includes：Improve the currently used down transmitting power of the user, Yong Huji
The continuous high interference sub-band used in edge band.
When performing uplink interference coordination,
Before step S1, further comprise：Defining the central user includes：3rd central user and the 4th center are used
Family, wherein, the 3rd central user uses whole edge bands and whole center frequency-bands；4th central user uses whole
Frequency band in edge band and the center frequency-band in addition to high interference sub-band；
In the step S2, described distribution user uses the frequency band in addition to high interference sub-band in center frequency-band
Including：It is the 3rd central user to determine the user, and the 3rd central user is changed into the 4th central user.
Before step S1, further comprise：Defining the edge customer includes：4th edge customer and the 5th edge are used
Family, wherein,
4th edge customer be used only the edge band in high interference sub-band, the uplink transmission power used be
Increase preset value on the power level of system distribution；
5th edge customer uses whole edge bands.
In step s 2, described distribution user is included using edge band：The 4th central user is determined that the user is, will
4th central user is changed to the 5th edge customer, and keeps the transmission power of the user constant；
Before judging it is edge customer, and perform the step S3, further comprise：Judge the user whether be
5th edge customer,
If it is, step S3 includes：The user is changed to the 4th edge customer from the 5th edge customer；Correspondingly, carry
The currently used uplink transmission power of the high user, distributes the high interference sub-band that the user uses edge band；
If it is not, step S3 includes：The user is the 4th edge customer, improves the currently used up hair of the user
Power is penetrated, user is continuing with the high interference sub-band in edge band.
When performing uplink interference coordination, in step S3, after the currently used transmission power of described raising user,
Further comprise：
Send the configuration of radio resource control messages RRC signaling configurating terminal open loop power control（P0_UE）It is worth to terminal, or passes through
Authorization command sends closed-loop power control bid value TPC to terminal, and itself uplink transmission power is improved with this instruction terminal.
This method further comprises：
The transmission rate of monitoring ensures bit rate GBR user in real time, when the transmission rate for monitoring the GBR user is not up to
During set rate requirement, determine whether continuously distribute frequency band, if it is, distributing more transmission belts to the GBR user
Width, otherwise, the high interference sub-band that the GBR user uses edge band is distributed, the transmitting power promotion of the GBR user is preset
Value.
A kind of base station, the base station include：
Division unit, for the frequency band of each cell to be divided into edge band and center frequency-band；Drawn in edge band
High interference sub-band is separated, and the high interference sub-band in center frequency-band is set；And division edge customer and central user；
Detection unit, for detecting whether the current transmission quality of user meets to require, if be unsatisfactory for, triggering judges single
Member；
Judging unit, in a triggered, the edge customer and central user divided according to the division unit, described in judgement
User-center user or edge customer, if central user, then first processing units are triggered, if edge customer,
Then trigger second processing unit；
First processing units, for the frequency band after being triggered by the judging unit, divided according to the division unit, sentence
The currently used frequency band of the user that breaks whether centered on high interference sub-band in frequency band, if it is, distributing the user makes
With the frequency band in addition to high interference sub-band in center frequency-band, otherwise, distribute the user and use edge band；
Second processing unit, for by the judging unit trigger after, the transmitting currently used for improving the user
Power, and distribute the user according to the watt level of user and use the high interference sub-band in edge band.
The division unit includes：
First descending setting subelement, includes for defining the central user：First central user and the second center are used
Family, wherein, for the first central user using whole edge bands and whole center frequency-bands, the down transmitting power used is to be
The center low-power of system distribution；Second central user is sub frequently using high interference is removed in whole edge bands and the center frequency-band
Frequency band outside band, the down transmitting power used are the center low-power of system distribution；
Second descending setting subelement, includes for defining the edge customer：First edge user, second edge user
With the 3rd edge customer, wherein, first edge user be used only the edge band in high interference sub-band, what is used is descending
Transmission power is to increase preset value on the basis of the edge high power of system distribution；Second edge user uses whole edge frequencies
Band, the down transmitting power used are the edge high power of system distribution；3rd edge customer is made using whole edge bands
Down transmitting power is the center low-power of system distribution.
The first processing units include the first downlink processing subelement, in described distribution user's use is performed
During the frequency band in addition to high interference sub-band in heart frequency band, according to the described first descending definition for setting subelement, will described in
User is changed to the second central user from the first central user；Also, when the described distribution user of execution uses edge band,
According to described first it is descending subelement and the second descending definition for setting subelement are set, by the user from the second central user
It is changed to the 3rd edge customer；
The second processing unit includes the second downlink processing subelement, for according to the described first descending setting subelement
With the second descending definition that subelement is set, perform it is described improve the currently used transmission power of the user before, further
Judge whether the user is second edge user, the edge high power distributed using system, if it is, by the user from the
Two edge customers are changed to first edge user, correspondingly, improve the currently used down transmitting power of the user, distribution should
User uses the high interference sub-band of edge band；If it is not, continue to judge the user for the 3rd edge customer or
One edge customer, if the 3rd edge customer, correspondingly, the currently used down transmitting power of the user is improved, then, is entered
One step judge current transmission power whether be system distribution edge high power, if system distribution edge high power,
The user is then changed to second edge user from the 3rd edge customer；If first edge user, correspondingly, the use is improved
The currently used down transmitting power in family, user are continuing with the high interference sub-band in edge band.
The division unit includes：
First up setting subelement, includes for defining central user：3rd central user and the 4th central user, its
In, the 3rd central user uses whole edge bands and whole center frequency-bands；4th central user uses whole edges
Frequency band in frequency band and the center frequency-band in addition to high interference sub-band；
Second up setting subelement, includes for defining the edge customer：4th edge customer and the 5th edge are used
Family, wherein, the 4th edge customer be used only the edge band in high interference sub-band, the uplink transmission power used be
Increase preset value on the power level of system distribution；5th edge customer uses whole edge bands.
The first processing units include the first up processing subelement, in described distribution user's use is performed
During the frequency band in addition to high interference sub-band in heart frequency band, the user is changed to the 4th center from the 3rd central user and used
Family；When the described distribution user of execution uses edge band, the user is changed to the 5th edge from the 4th central user
User, and keep the transmission power of the user constant；
The second processing unit includes the second up processing subelement, for currently used in described raising user
Before transmission power, determine whether the user is the 5th edge customer, if it is, by the user from the 5th edge
User is changed to the 4th edge customer, and improves the currently used uplink transmission power of the user, distributes the user and uses edge
The high interference sub-band of frequency band；If it is not, then the user is the 4th edge customer, it is currently used directly to improve the user
Uplink transmission power, user are continuing with the high interference sub-band in edge band.
（Three）Beneficial effect
The present invention at least has following beneficial effect：
1st, inter-cell interference coordination method of the invention is a kind of method of dynamic adjustment, i.e., bad in user's transmission quality
When, the frequency band that user uses can be changed in real time, also, when changing the frequency band that user uses, additionally use what is changed step by step
Mode, that is to say, that high interference sub-band has been marked off in center frequency-band and edge band in advance, if what user used
Be high interference sub-band, then changed into using non-high interference sub-band, if user use it is non-in center frequency-band
High interference sub-band, then it can change into edge band from center frequency-band.The method of such a dynamic adjustment can adapt to wireless network
Network environment it is complicated and changeable.On the other hand, the present invention be directed to unique user carry out frequency band adjustment, therefore, it is possible to according to
The actual transmissions quality at family carries out the real-time interference coordination in unique user granularity, so as to meet the actual requirement of business.
2nd, the present invention for cell when carrying out downlink interference collaboration, it is contemplated that the characteristics of downlink transfer, on the one hand adjusts
The frequency band that user uses, the descending power that user uses also on the other hand is adjusted simultaneously, therefore, it is possible to be carried out for descending interference
Preferably coordinate.
3rd, the present invention for cell when carrying out uplink interference coordination, it is contemplated that the characteristics of uplink, on the one hand adjusts
The frequency band that user uses, on the other hand user can be notified when uplink power changes, so as to further ensure transmission
Correctness.
4th, the present invention can be directed to GBR user, single interference coordination be carried out, so as to further ensure GBR user's
Transmission quality.
Certainly, any product or method for implementing the present invention must be not necessarily required to reach all the above excellent simultaneously
Point.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the flow chart that one embodiment of the invention realizes interference coordination；
Fig. 2 is the flow chart that downlink interference collaboration is realized in one embodiment of the invention；
Fig. 3 is midband of embodiment of the present invention division schematic diagram；
Fig. 4 is the flow chart that uplink interference coordination is realized in another embodiment of the present invention；
Fig. 5 is the flow chart for carrying out interference coordination in further embodiment of the present invention to GBR user；
Fig. 6 is a kind of structural representation of inside of base station in the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Embodiments of the invention propose a kind of method of interference coordination, and referring to Fig. 1, the method for the embodiment is including as follows
Step：
Step 101：The frequency band of each cell is divided into edge band and center frequency-band；Height is marked off in edge band
Sub-band is disturbed, and the high interference sub-band in center frequency-band is set；And division edge customer and central user.
Step 102：Whether the current transmission quality of detection user meets to require, if it is, return to step 102, otherwise, then
Perform step 103.
Step 103：Judge user-center user or edge customer, if central user, perform step 104,
If edge customer, step 107 is performed；
Step 104：Judge the currently used frequency band of the user whether centered on high interference sub-band in frequency band, if
It is to perform step 105, otherwise performs step 106.
Step 105：Distribute the user and use the frequency band in addition to high interference sub-band in center frequency-band, return to step
102。
Step 106：Distribute the user and use edge band, return to step 102.
Step 107：The currently used transmission power of the user is improved, and distribute the user according to the watt level of user to make
With the high interference sub-band of edge band, return to step 102.
The inter-cell interference coordination method that the embodiment of the present invention is can be seen that from flow shown in Fig. 1 is that a kind of dynamic adjusts
Method, i.e., when user's transmission quality is bad, the frequency band that user uses can be changed in real time, also, use changing user
Frequency band when, additionally use the mode changed step by step, that is to say, that marked off in center frequency-band and edge band in advance
High interference sub-band, if user uses high interference sub-band, changed into using non-high interference sub-band, if
User uses the non-high interference sub-band in center frequency-band, then can change into edge band from center frequency-band.It is such a dynamic
The method of state adjustment can adapt to the complicated and changeable of wireless network environment.On the other hand, the present invention be directed to unique user progress
The adjustment of frequency band, therefore, it is possible to carry out the real-time interference coordination in unique user granularity according to the actual transmissions quality of user, from
And meet the actual requirement of business.
Disturbance coordination method shown in above-mentioned Fig. 1 goes for uplink interference coordination, is readily applicable to descending interference
Coordinate.
When flow shown in above-mentioned Fig. 1 is applied to downlink interference collaboration, the frequency band that further can be used according to user and
The difference of power, multiclass central user and edge customer are defined respectively, so as to realize interference adjustment step by step.
For example a kind of preferably definition method is that central user is defined as into two classes, and edge customer is defined as into three classes.
Wherein,
Central user includes：First central user and the second central user.First central user uses whole edge frequencies
Band and whole center frequency-bands, the down transmitting power used are the center low-power of system distribution；Second central user uses
Frequency band in whole edge bands and the center frequency-band in addition to high interference sub-band, the down transmitting power used are to be
The center low-power of system distribution.
Edge customer includes：First edge user, second edge user and the 3rd edge customer.First edge user only makes
With the high interference sub-band in the edge band, the down transmitting power used is on the edge high power basis of system distribution
Upper increase preset value；For second edge user using whole edge bands, the down transmitting power used is the side of system distribution
Edge high power；For 3rd edge customer using whole edge bands, the down transmitting power used is that the center of system distribution is low
Power.
Based on two classes central user defined above and three class edge customers, when user's transmission quality is bad, according to
User is adjusted to the user of other ranks by the currently used frequency band in family and power, to realize downlink interference collaboration, so as to full
Sufficient user's transmission quality requirements.
When flow shown in above-mentioned Fig. 1 is applied to uplink interference coordination, the frequency band that further can also be used according to user
Difference, central user and edge customer are defined into multiclass respectively, so as to realize step by step interference adjustment.
For example a kind of preferably definition method is that central user is defined as into two classes, edge customer is also defined as into two
Class.Wherein,
Central user includes：3rd central user and the 4th central user.3rd central user uses whole edge frequencies
Band and whole center frequency-bands；4th central user is sub frequently using high interference is removed in whole edge bands and the center frequency-band
Frequency band outside band.
Edge customer includes the 4th edge customer and the 5th edge customer.Wherein, the side is used only in the 4th edge customer
High interference sub-band in edge frequency band, the uplink transmission power used are to increase preset value on the power level of system distribution；
5th edge customer uses whole edge bands.
Based on two classes central user defined above and two class edge customers, when user's transmission quality is bad, according to
User is adjusted to the user of other ranks by the currently used power in family, to realize uplink interference coordination, so as to meet user
Transmission quality requirements.
It should be noted that foregoing description for downlink interference collaboration and uplink interference coordination definition central user and
One preferred embodiment of the method for edge customer, the simply present invention, in the business realizing of reality, it can be become
Shape, as long as ensureing from the at different levels at different levels to edge customer of central user, per one-level by setting its corresponding frequency band and power
Ensure that interference reduces step by step, so, follow-up, when user's transmission quality is unsatisfactory for requiring, according to interference at different levels, renewal
Rank corresponding to user, that is, update the frequency band and power that user uses.Such as central user, can not be according to above-mentioned fixed
Justice is two classes, and is defined as three classes, and frequency band and power corresponding to the three classes user only need to ensure that interference reduction is i.e. step by step
Can；For another example, for edge customer, in downlink interference collaboration, three classes can not also be defined as according to above-mentioned, but be only defined as
Above-mentioned first edge user and second edge user two class, follow-up second central user directly switch to second edge user etc..
Further, the present invention can also be directed to GBR user and carry out interference coordination, and can not meet in GBR user's transmission will
When asking, the frequency band that adjustment GRB user uses is high interference sub-band, and lifts its transmission power, so as to be further ensured that GRB is used
The transmission requirement at family.
In order to clearly explain the detailed implementation of the embodiment of the present invention, separately below for downlink interference collaboration
A specific embodiment is lifted respectively with uplink interference coordination to illustrate.
Embodiment 1：
The present embodiment 1 describes a kind of implementation process of downlink interference collaboration in detail.
Fig. 2 is the flow chart that downlink interference collaboration is realized in the embodiment of the present invention 1.Referring to Fig. 2, when communication system is using same
During frequency networking, in an embodiment of the invention, realize that the process of downlink interference collaboration comprises the following steps：
Step 201：The frequency band of each cell is divided into edge band and center frequency-band, and division edge customer is with
Heart user, the center low-power for setting central user to use system to distribute, edge customer use the edge high power that system is distributed.
In this step, dividing the method for central user and edge customer includes：
This cell reference signals receiving power of reporting of user itself measurement（Reference Signal Receiving
Power, RSRP）With the RSRP values of neighbor cell to base station, base station is small using PPR=sheet according to the RSRP values of each reporting of user
Area RSRP- adjacent cells RSRP relative value size judges far and near position of the user from base station.PPR is more big, shows terminal from base
Station location is nearer.According to relative value thresholding set in advance, PPR values are set to central user higher than thresholding, less than determining for thresholding
For edge customer.
Step 202：High interference sub-band is marked off in edge band, and the high interference son frequency in center frequency-band is set
Band.
Here, each cell marks off 1/3 band system band as edge band, and remaining 2/3 frequency band is as center frequency
Band.
Referring to Fig. 3, because in identical networking system, the edge band of a cell is the center frequency-band of two cells,
Therefore, in the edge band of each cell, just there is a high interference after marking off high interference sub-band, in each edge band
Sub-band, in each center frequency-band correspondingly just have two high interference sub-bands.
For the high interference sub-band in edge band, its expression can be with other frequency bands of transmitting ratio, including common edge
Frequency band, higher transmission power, higher useful signal is may provide the user with, but may also give adjacent area bigger interference simultaneously
Intensity.Definition for the high interference sub-band in center frequency-band is not ensure the degree being interfered, and the frequency band may have
Very strong interference level.
Step 203：Defining central user includes two classes, central user A and central user B；Also, define edge customer bag
Include three classes, edge customer A, edge customer B, edge customer C.
In this step, edge customer A：The worst a part of edge customer of channel conditions, it can only use in edge band
High interference sub-band works, and its down transmitting power has lifting on the basis of normal edge high power.
Edge customer B：Normal edge customer, whole edge bands can be used to work, down transmitting power uses
Normal edge high power.
Edge customer C：For from the converted next edge customer of central user, original state is edge customer C, can be made
Worked with the edge band of whole, its down transmitting power uses or center low-power.
Central user A：The best a part of central user of channel conditions, it can use the high interference for including center frequency-band
All center frequency-bands including sub-band, and the work of whole edge bands, the down transmitting power used distribute for system
Center low-power.
Central user B：Common central user, it can use all in addition to the high interference sub-band of center frequency-band
Center frequency-band, and the work of whole edge bands；The down transmitting power used is the center low-power of system distribution
For ease of description, entered below exemplified by monitoring any one user 1 and carrying out downlink interference collaboration for user 1
Row explanation.
Step 204：The downlink transfer Block Error Rate of monitoring user 1 in real time（BLER, Block Error Ratio）.
Step 205：If user 1 is modulated using lowest-order and encoding scheme（MCS）, then judge to specify the statistics week of number
Whether the BLER values of user 1 are all higher than predetermined threshold value in phase, if it is, performing step 206, otherwise return to step 204.
The process of step 204 to step 205 then completes whether the current transmission quality of detection user meets to require.When
So, detect whether the current transmission quality of user meets that requirement can also use other implementation process.
Step 206：Judge whether user 1 is currently edge customer, if it is, performing step 207, otherwise perform step
215。
Step 207：Judge whether user 1 is currently edge customer B, and use normal edge high power, if it is,
Step 208 is performed, otherwise performs step 210.
Step 208：The classification of user 1 is changed to edge customer A, sets user 1 to use the high interference in edge band
Sub-band.
Step 209：The down transmitting power of user 1 lifts predetermined power value on the basis of existing performance number, returns to step
Rapid 204.
Step 210：Judge whether user 1 is currently edge customer C, using center low-power, if it is, performing step
211, otherwise, perform step 214.
Step 211：The down transmitting power of user 1 lifts predetermined power value on the basis of existing center low power value.
Step 212：Judge whether the current down transmitting power of user 1 has reached the normal edge Gao Gong of system distribution
Rate, if it is, performing step 213, otherwise, return to step 204.
Step 213：User 1 is changed to edge customer B, i.e. frequency band and power all uses frequency band corresponding to edge customer B
And power, return to step 204.
Step 214：It is currently edge customer A to determine user 1, turns to and performs step 209.
Step 215：Judge user 1 it is current whether centered on user A, using the high interference sub-band in center frequency-band, such as
Fruit is to perform step 216, otherwise, performs step 217.
Step 216：User 1 is changed to central user B, does not use the high interference sub-band in center frequency-band, it is descending
Transmission power uses the normal edge high power that system is distributed, return to step 204.
Step 217：User B centered on determining user 1 currently, is changed to edge customer C, i.e. the frequency band used by user 1
Be changed into edge band, but the descending power used is constant, still centered on low-power, return to step 204.
So far, then the downlink interference collaboration of user is completed.
Embodiment 2：
The present embodiment 2 describes a kind of implementation process of uplink interference coordination in detail.
Fig. 4 is the flow chart that uplink interference coordination is realized in the embodiment of the present invention 2.Referring to Fig. 4, when communication system is using same
During frequency networking, in an embodiment of the invention, realize that the process of uplink interference coordination comprises the following steps：
Step 401：The frequency band of each cell is divided into edge band and center frequency-band, and division edge customer is with
Heart user.
In this step, the method for dividing central user and edge customer is identical with the method that step 201 place describes.
Being described for step 402 is identical with being described for step 202.
Step 403：Defining central user includes two classes, central user a and central user b；Also, define edge customer bag
Include two classes, edge customer a, edge customer b.
In this step, edge customer a：The worst a part of edge customer of channel conditions, it can only use in edge band
High interference sub-band works, and its uplink transmission power has lifting on the basis of with power.
Edge customer b：Normal edge customer, whole edge bands can be used to work.
Central user a：The best a part of central user of channel conditions, it can use the high interference for including center frequency-band
All center frequency-bands including sub-band, and the work of whole edge bands.
Central user b：Common central user, it can use all in addition to the high interference sub-band of center frequency-band
Center frequency-band, and the work of whole edge bands.
For ease of description, entered below exemplified by monitoring any one user 1 and carrying out downlink interference collaboration for user 1
Row explanation.
Step 404：The up BLER of monitoring user 1 in real time.
Step 405：If user 1 is modulated using lowest-order and encoding scheme（MCS）, then judge to specify the statistics week of number
Whether the up BLER values of user 1 are all higher than predetermined threshold value in phase, if it is, performing step 406, otherwise return to step
404。
The process of step 404 to step 405 then completes whether the current transmission quality of detection user meets to require.When
So, detect whether the current transmission quality of user meets that requirement can also use other implementation process.
Step 406：Judge whether user 1 is currently edge customer, if it is, performing step 407, otherwise perform step
412。
Step 407：Judge whether user 1 is currently edge customer b, if it is, performing step 408, otherwise perform step
Rapid 411.
Step 408：The classification of user 1 is changed to edge customer a, sets user 1 to use the high interference in edge band
Sub-band.
Step 409：The uplink transmission power of user 1 lifts predetermined power value on the basis of existing performance number.
Step 410：Radio resource control messages are sent by base station（RRC）Signal deployment P0_UE values are referred to terminal with this
Show the uplink transmission power after terminal lifting.
In this step, closed-loop power control order can also be sent by authorization command（TPC）It is worth to terminal, with this instruction terminal
Uplink transmission power after lifting.
Step 411：It is currently edge customer a to determine user 1, turns to and performs step 409.
Step 412：Judge user 1 it is current whether centered on user a, using the high interference sub-band in center frequency-band, such as
Fruit is to perform step 413, otherwise, performs step 414.
Step 413：User 1 is changed to central user b, does not use the high interference sub-band in center frequency-band, is returned
Step 404.
Step 414：User b centered on determining user 1 currently, is changed to edge customer b, i.e. the frequency band used by user 1
It is changed into edge band, the ascending power used is constant, return to step 404.
So far, then the uplink interference coordination of user is completed.
In another embodiment, it is contemplated that ensures bit rate（GBR）User is important to for transmission rate
Ask, the way of high interference sub-band, and the way of increase power, the embodiment of the present invention are divided using the embodiments of the present invention
In, it is also proposed that a kind of method that interference coordination is carried out for GBR user.
In GBR transmission user, including edge customer GBR industry is carried out in the user of progress GBR traffic transmission and central user
Be engaged in the user transmitted.It uses corresponding available band according to the classification of above-mentioned center and peripheral user, but is used for center
Family, it avoids using the high interference sub-band in center frequency-band as far as possible when carrying out GBR traffic transmission.
Fig. 5 is the flow chart for carrying out interference coordination in further embodiment of the present invention to GBR user.Referring to Fig. 5, the flow
Comprise the following steps：
Step 501：Base station monitors the transmission rate of GBR user in real time.
Step 502：Base station judges whether the speed of current GBR user is not up to set rate requirement, if it is, performing step
Rapid 503, otherwise return to step 501.
Step 503：Determine whether continuously distribute frequency band, if it is, performing step 504, otherwise perform step 505.
Step 504：More transmission bandwidths, return to step 501 are distributed to the GBR user.
Step 505：Distribute the high interference sub-band that the GBR user uses edge band.
Step 506：By the transmitting power promotion preset value of the GBR user, return to step 501.
It should be noted that the flow shown in above-mentioned Fig. 5 can apply to the interference association for descending progress GBR user
Adjust, now, in above-mentioned steps 501, be the downlink transmission rate for monitoring GRB user, be by under in above-mentioned steps 506 correspondingly
Row transmitting power promotion preset value.
Certainly, the flow shown in above-mentioned Fig. 5 can also be applied to the interference coordination for up progress GBR user, now,
In above-mentioned steps 501, it is the uplink transmission rate for monitoring GRB user, is by up transmitting work(in above-mentioned steps 506 correspondingly
Rate lifts preset value, also, in order to ensure that user knows the uplink transmission power of the lifting, RRC letters can be sent by base station
Order configuration P0_UE values are to user, the uplink transmission power after being lifted with this instruction user.
In another embodiment of the present invention, it is proposed that a kind of base station, referring to Fig. 6, the base station includes：
Division unit, for the frequency band of each cell to be divided into edge band and center frequency-band；Drawn in edge band
High interference sub-band is separated, and the high interference sub-band in center frequency-band is set；And division edge customer and central user；
Detection unit, for detecting whether the current transmission quality of user meets to require, if be unsatisfactory for, triggering judges single
Member；
Judging unit, in a triggered, the edge customer and central user divided according to the division unit, described in judgement
User-center user or edge customer, if central user, then first processing units are triggered, if edge customer,
Then trigger second processing unit；
First processing units, for the frequency band after being triggered by the judging unit, divided according to the division unit, sentence
The currently used frequency band of the user that breaks whether centered on high interference sub-band in frequency band, if it is, distributing the user makes
With the frequency band in addition to high interference sub-band in center frequency-band, otherwise, distribute the user and use edge band；
Second processing unit, for by the judging unit trigger after, the transmitting currently used for improving the user
Power, and distribute the user according to the watt level of user and use the high interference sub-band in edge band.
In one embodiment of the invention, base station has following structure and function, so as to complete downlink interference collaboration：
Now, the division unit includes：
First descending setting subelement, includes for defining the central user：First central user and the second center are used
Family, wherein, for the first central user using whole edge bands and whole center frequency-bands, the down transmitting power used is to be
The center low-power of system distribution；Second central user is sub frequently using high interference is removed in whole edge bands and the center frequency-band
Frequency band outside band, the down transmitting power used are the center low-power of system distribution；
Second descending setting subelement, includes for defining the edge customer：First edge user, second edge user
With the 3rd edge customer, wherein, first edge user be used only the edge band in high interference sub-band, what is used is descending
Transmission power is to increase preset value on the basis of the edge high power of system distribution；Second edge user uses whole edge frequencies
Band, the down transmitting power used are the edge high power of system distribution；3rd edge customer is made using whole edge bands
Down transmitting power is the center low-power of system distribution.
Correspondingly,
The first processing units include the first downlink processing subelement, in described distribution user's use is performed
During the frequency band in addition to high interference sub-band in heart frequency band, according to the described first descending definition for setting subelement, will described in
User is changed to the second central user from the first central user；Also, when the described distribution user of execution uses edge band,
According to described first it is descending subelement and the second descending definition for setting subelement are set, by the user from the second central user
It is changed to the 3rd edge customer；
The second processing unit includes the second downlink processing subelement, for according to the described first descending setting subelement
With the second descending definition that subelement is set, perform it is described improve the currently used transmission power of the user before, further
Judge whether the user is second edge user, the edge high power distributed using system, if it is, by the user from the
Two edge customers are changed to first edge user, correspondingly, improve the currently used down transmitting power of the user, distribute the use
Family uses the high interference sub-band of edge band；If it is not, continue to judge the user for the 3rd edge customer or first
Edge customer, if the 3rd edge customer, correspondingly, the currently used down transmitting power of the user is improved, then, enters one
Step judge current transmission power whether be system distribution edge high power, if system distribute edge high power, then
The user is changed to second edge user from the 3rd edge customer；If first edge user, correspondingly, the user is improved
Currently used down transmitting power, user are continuing with the high interference sub-band in edge band.
In another embodiment of the present invention, base station has following structure and function, so as to complete uplink interference coordination：
Now, the division unit includes：
First up setting subelement, includes for defining central user：3rd central user and the 4th central user, its
In, the 3rd central user uses whole edge bands and whole center frequency-bands；4th central user uses whole edges
Frequency band in frequency band and the center frequency-band in addition to high interference sub-band；
Second up setting subelement, includes for defining the edge customer：4th edge customer and the 5th edge are used
Family, wherein, the 4th edge customer be used only the edge band in high interference sub-band, the uplink transmission power used be
Increase preset value on the power level of system distribution；5th edge customer uses whole edge bands.
Correspondingly,
The first processing units include the first up processing subelement, in described distribution user's use is performed
During the frequency band in addition to high interference sub-band in heart frequency band, the user is changed to the 4th center from the 3rd central user and used
Family；When the described distribution user of execution uses edge band, the user is changed to the 5th edge from the 4th central user
User, and keep the transmission power of the user constant；
The second processing unit includes the second up processing subelement, for currently used in described raising user
Before transmission power, determine whether the user is the 5th edge customer, if it is, by the user from the 5th edge
User is changed to the 4th edge customer, and improves the currently used uplink transmission power of the user, distributes the user and uses edge
The high interference sub-band of frequency band；If it is not, then the user is the 4th edge customer, it is currently used directly to improve the user
Uplink transmission power, user are continuing with the high interference sub-band in edge band.
It should be noted that the base station described by process and above-described embodiment shown in above-mentioned Fig. 2 and Fig. 4, simply this
A preferred embodiment of the invention in downlink interference collaboration and uplink interference coordination, can be right in the business realizing of reality
It is deformed, as long as ensureing from the at different levels at different levels to edge customer of central user, per one-level by setting frequency corresponding to its
Band and power assurance interference reduce step by step, so, follow-up, when user's transmission quality is unsatisfactory for requiring, according at different levels
Interference, rank corresponding to user is updated, that is, updates the frequency band and power that user uses.For example for central user, it can not press
It is divided into two classes according to above-mentioned definition, and is defined as three classes, frequency band and power corresponding to the three classes user only needs to ensure to do step by step
Disturb reduction；For another example, for edge customer, in downlink interference collaboration, can not also be divided into three classes according to above-mentioned definition, and
It is only to be defined as above-mentioned edge customer A and edge customer B two class, subsequent central user B directly switches to edge customer B etc..
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply and deposited between these entities or operation
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability includes, so that process, method, article or equipment including a series of elements not only will including those
Element, but also the other element including being not expressly set out, or it is this process, method, article or equipment also to include
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Other identical element also be present in process, method, article or equipment including the key element.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
The present invention is described in detail, it will be understood by those within the art that：It still can be to foregoing each implementation
Technical scheme described in example is modified, or carries out equivalent substitution to which part technical characteristic；And these modification or
Replace, the essence of appropriate technical solution is departed from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (13)
- A kind of 1. method of interference coordination, it is characterised in that the frequency band of each cell is divided into edge band and center frequency-band； High interference sub-band is marked off in edge band, and the high interference sub-band in center frequency-band is set；And division edge is used Family and central user, this method also include：Whether the current transmission quality of S1, detection user meets to require, if be unsatisfactory for, judges user-center user also It is edge customer, if central user, performs step S2, if edge customer, performs step S3；S2, judge the currently used frequency band of the user whether centered on high interference sub-band in frequency band, if it is, distribution should User uses the frequency band in addition to high interference sub-band in center frequency-band, otherwise, distributes the user and uses edge band, returns Step S1；S3, the currently used transmission power of the user is improved, and distribute the user according to the watt level of user and use edge frequency High interference sub-band in band, return to step S1；When performing downlink interference collaboration,Before step S1, further comprise：Defining the central user includes：First central user and the second central user, Wherein,For first central user using whole edge bands and whole center frequency-bands, the down transmitting power used is system point The center low-power matched somebody with somebody；Second central user is made using the frequency band in whole edge bands and the center frequency-band in addition to high interference sub-band Down transmitting power is the center low-power of system distribution；In the step S2, described distribution user uses the frequency band bag in addition to high interference sub-band in center frequency-band Include：It is the first central user to determine the user, and first central user is changed into the second central user.
- 2. according to the method for claim 1, it is characterised in that in step S1, the current transmission quality of the detection user Whether satisfaction requires to include：The Block Error Rate of user's transmission is calculated, when the value of the Block Error Rate in the measurement period for specifying number is all higher than pre-determined threshold Value, and the user using lowest-order modulation with encoding scheme MCS when, it is determined that the current transmission quality of the user is unsatisfactory for It is required that otherwise, it determines the current transmission quality of the user meets to require.
- 3. according to the method for claim 1, it is characterised in that before step S1, further comprise：Defining the edge customer includes：First edge user, second edge user and the 3rd edge customer, wherein,The high interference sub-band in the edge band is used only in first edge user, and the down transmitting power used is in system Increase preset value on the basis of the edge high power of distribution；For second edge user using whole edge bands, the down transmitting power used is the edge high power of system distribution；For 3rd edge customer using whole edge bands, the down transmitting power used is the center low-power of system distribution.
- 4. according to the method for claim 3, it is characterised in thatIn step s 2, described distribution user is included using edge band：Determine that the user is the second central user, by this Two central users are changed to the 3rd edge customer；Before judging it is edge customer, and perform the step S3, further comprise：Judge whether the user is second Edge customer, the edge high power distributed using system,If it is, step S3 includes：The user is changed to first edge user from second edge user, correspondingly, improving should The currently used down transmitting power of user, distribute the user and use the high interference sub-band in edge band；If it is not, continue to judge the user as the 3rd edge customer or first edge user,If the 3rd edge customer, step S3 includes：The currently used down transmitting power of the user is improved, then, enters one Step judge current transmission power whether be system distribution edge high power, if system distribute edge high power, then The user is changed to second edge user from the 3rd edge customer；If first edge user, step S3 includes：The currently used down transmitting power of the user is improved, user continues to make With the high interference sub-band in edge band.
- 5. according to the method for claim 1, it is characterised in that when performing uplink interference coordination,Before step S1, further comprise：Defining the central user includes：3rd central user and the 4th central user, Wherein, the 3rd central user uses whole edge bands and whole center frequency-bands；4th central user uses whole sides Frequency band in edge frequency band and the center frequency-band in addition to high interference sub-band；In the step S2, described distribution user uses the frequency band bag in addition to high interference sub-band in center frequency-band Include：It is the 3rd central user to determine the user, and the 3rd central user is changed into the 4th central user.
- 6. according to the method for claim 5, it is characterised in that before step S1, further comprise：Define the edge User includes：4th edge customer and the 5th edge customer, wherein,The high interference sub-band in the edge band is used only in 4th edge customer, and the uplink transmission power used is in system Increase preset value on the power level of distribution；5th edge customer uses whole edge bands.
- 7. according to the method for claim 6, it is characterised in thatIn step s 2, described distribution user is included using edge band：Determine that the user is the 4th central user, by this Four central users are changed to the 5th edge customer, and keep the transmission power of the user constant；Before judging it is edge customer, and perform the step S3, further comprise：Judge whether the user is the 5th Edge customer,If it is, step S3 includes：The user is changed to the 4th edge customer from the 5th edge customer；Correspondingly, improving should The currently used uplink transmission power of user, distribute the high interference sub-band that the user uses edge band；If it is not, step S3 includes：The user is the 4th edge customer, improves the currently used up transmitting work(of the user Rate, user are continuing with the high interference sub-band in edge band.
- 8. according to the method for claim 1, it is characterised in that when performing uplink interference coordination, in step S3, described After improving the currently used transmission power of the user, further comprise：Send radio resource control messages RRC signaling configurating terminal open loop power control and configure (P0_UE) value to terminal, or pass through mandate Order sends closed-loop power control bid value TPC to terminal, and itself uplink transmission power is improved with this instruction terminal.
- 9. according to any described method in claim 1 to 8, it is characterised in that this method further comprises：The transmission rate of monitoring ensures bit rate GBR user in real time, when the transmission rate for monitoring the GBR user is not up to predetermined During rate requirement, determine whether continuously distribute frequency band, if it is, more transmission bandwidths are distributed to the GBR user, it is no Then, the high interference sub-band that the GBR user uses edge band is distributed, by the transmitting power promotion preset value of the GBR user.
- 10. a kind of base station, it is characterised in that the base station includes：Division unit, for the frequency band of each cell to be divided into edge band and center frequency-band；Marked off in edge band High interference sub-band, and the high interference sub-band in center frequency-band is set；And division edge customer and central user；Detection unit, for detecting whether the current transmission quality of user meets to require, if be unsatisfactory for, trigger judging unit；Judging unit, in a triggered, the edge customer and central user divided according to the division unit, judge the user Centered on user or edge customer, if central user, then trigger first processing units, if edge customer, then touch Send out second processing unit；First processing units, for the frequency band after being triggered by the judging unit, divided according to the division unit, judge institute State the currently used frequency band of user whether centered on high interference sub-band in frequency band, if it is, distributing in user's use The frequency band in addition to high interference sub-band in heart frequency band, otherwise, distribute the user and use edge band；Second processing unit, for by the judging unit trigger after, the transmission power currently used for improving the user, And distribute the user according to the watt level of user and use the high interference sub-band in edge band；The division unit includes：First descending setting subelement, includes for defining the central user：First central user and the second central user, its In, for the first central user using whole edge bands and whole center frequency-bands, the down transmitting power used is system point The center low-power matched somebody with somebody；Second central user using in whole edge bands and the center frequency-band except high interference sub-band it Outer frequency band, the down transmitting power used are the center low-power of system distribution；Second descending setting subelement, includes for defining the edge customer：First edge user, second edge user and Three edge customers, wherein, the high interference sub-band in the edge band, the downlink used is used only in first edge user Power is to increase preset value on the basis of the edge high power of system distribution；Second edge user uses whole edge bands, The down transmitting power used is the edge high power of system distribution；3rd edge customer is used using whole edge bands Down transmitting power be system distribution center low-power.
- 11. base station according to claim 10, it is characterised in thatThe first processing units include the first downlink processing subelement, for using center frequency in the described distribution user of execution Band in the frequency band in addition to high interference sub-band when, according to described first it is descending set subelement definition, by the user The second central user is changed to from the first central user；Also, when the described distribution user of execution uses edge band, according to The described first descending definition for setting subelement and the second descending setting subelement, the user is changed from the second central user For the 3rd edge customer；The second processing unit includes the second downlink processing subelement, for descending setting subelement and the according to described first The two descending definition that subelement is set, before the currently used transmission power of described raising user is performed, determine whether Whether the user is second edge user, the edge high power distributed using system, if it is, by the user from the second side Edge user is changed to first edge user, correspondingly, improves the currently used down transmitting power of the user, distributing the user makes With the high interference sub-band of edge band；If it is not, continue to judge the user for the 3rd edge customer or first edge User, if the 3rd edge customer, correspondingly, the currently used down transmitting power of the user is improved, then, is further sentenced Disconnected current transmission power whether be system distribution edge high power, if the edge high power of system distribution, then should User is changed to second edge user from the 3rd edge customer；If first edge user, correspondingly, it is current to improve the user The down transmitting power used, user are continuing with the high interference sub-band in edge band.
- 12. base station according to claim 10, it is characterised in thatThe division unit includes：First up setting subelement, includes for defining central user：3rd central user and the 4th central user, wherein, 3rd central user uses whole edge bands and whole center frequency-bands；4th central user uses whole edge bands With the frequency band in the center frequency-band in addition to high interference sub-band；Second up setting subelement, includes for defining the edge customer：4th edge customer and the 5th edge customer, its In, the high interference sub-band in the edge band is used only in the 4th edge customer, and the uplink transmission power used is in system Increase preset value on the power level of distribution；5th edge customer uses whole edge bands.
- 13. base station according to claim 12, it is characterised in thatThe first processing units include the first up processing subelement, for using center frequency in the described distribution user of execution Band in the frequency band in addition to high interference sub-band when, the user is changed to the 4th central user from the 3rd central user； When the described distribution user of execution uses edge band, the user is changed to the 5th edge from the 4th central user and used Family, and keep the transmission power of the user constant；The second processing unit includes the second up processing subelement, in the currently used transmitting of described raising user Before power, determine whether the user is the 5th edge customer, if it is, by the user from the 5th edge customer The 4th edge customer is changed to, and improves the currently used uplink transmission power of the user, the user is distributed and uses edge band High interference sub-band；If it is not, then the user is the 4th edge customer, currently used up of the user is directly improved Transmission power, user are continuing with the high interference sub-band in edge band.
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| CN106658552B (en) * | 2015-10-30 | 2019-09-17 | 普天信息技术有限公司 | Interference management method, system |
| CN107204821B (en) * | 2016-03-16 | 2018-10-12 | 普天信息技术有限公司 | Inhibit method and the base station of high-power terminal interference |
| CN108990066B (en) * | 2017-06-02 | 2022-01-28 | 普天信息技术有限公司 | Downlink interference coordination method and device for multicast and unicast mixed service |
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| CN102204310A (en) * | 2011-05-17 | 2011-09-28 | 华为技术有限公司 | Resource allocation method, apparatus and base station |
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| EP1892972A1 (en) * | 2006-08-21 | 2008-02-27 | Nokia Siemens Networks Gmbh & Co. Kg | Method and system for interference mitigation in a mobile communications system |
| CN101420734A (en) * | 2008-11-28 | 2009-04-29 | 华为技术有限公司 | Downlink interference collaboration method and base station |
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