CN109672491A - A kind of signal processing method, device, equipment and computer readable storage medium - Google Patents
A kind of signal processing method, device, equipment and computer readable storage medium Download PDFInfo
- Publication number
- CN109672491A CN109672491A CN201710951890.8A CN201710951890A CN109672491A CN 109672491 A CN109672491 A CN 109672491A CN 201710951890 A CN201710951890 A CN 201710951890A CN 109672491 A CN109672491 A CN 109672491A
- Authority
- CN
- China
- Prior art keywords
- adjacent area
- cell
- power
- serving cell
- interfered
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
- H04J11/0023—Interference mitigation or co-ordination
- H04J11/005—Interference mitigation or co-ordination of intercell interference
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
- H04J11/0023—Interference mitigation or co-ordination
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
Abstract
The present invention provides a kind of signal processing method, device, equipment and computer readable storage medium, is related to field of communication technology, to improve system performance.Signal processing method of the invention comprises determining that interfered cell is gathered, wherein including serving cell and at least one adjacent area in the set of the interfered cell；Disturbance reconstruction and deletion are successively carried out to the cell in the set of the interfered cell；Result to each disturbance reconstruction and after deleting has carried out offset compensation.System performance can be improved in the present invention.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of signal processing method, device, equipment and computer-readable
Storage medium.
Background technique
EICIC (enhanced ICIC, the coordinating district interference of enhancing)/FeICIC (Further enhanced
Inter-Cell Interference Coordination, the coordinating district interference further increased) be primarily upon scene
There are two: macro-pico deployment scenario and macro-femto deployment scenario.CRE (Cell Range under above-mentioned scene
Expansion, cell coverage expansion) strong jamming of the zone user by adjacent area.In general, by between macro station and serving BS
Interaction, the CRE user of serving cell, which can dispatch, is set as ABS (Almost Blank Subframe, almost blank in adjacent area
Subframe) subframe on, but still will receive CRS (Cell-specific reference signals, cell specific reference
Signal) or common signal channel strong jamming, therefore, UE (User Equipment, user equipment) needs to have CRS/PBCH
The ability that (Physical Broadcast Channel, Physical Broadcast Channel) interference is deleted.
In FEICIC technology, first have to be ranked up adjacent area to be deleted.Secondly, the CRS or PBCH to adjacent area are carried out
Reconstruct, finally deletes the interference signal after reconstruct.Then demodulation coding processing is carried out to the data of serving cell again.
In above process, UE is according to RSRP (the Reference Signal of all adjacent areas and serving cell
Receiving Power, Reference Signal Received Power) power sequence is carried out to all adjacent areas and serving cell.If serviced small
The power in area is most weak, then deletes serving cell from the set of cells that interference is deleted, i.e., do not delete serving cell and mend again
The process repaid.So, under the slightly weak scene of the power of the power ratio adjacent area of serving cell, directly serving cell is deleted
It removes, it will very big influence is caused to system performance.
Summary of the invention
In view of this, the present invention provides a kind of signal processing method, device, equipment and computer readable storage medium, use
To improve system performance.
In order to solve the above technical problems, in a first aspect, the embodiment of the present invention provides a kind of signal processing method, comprising:
Determine that interfered cell is gathered, wherein including at least one adjacent area in the set of the interfered cell；
Disturbance reconstruction and deletion are successively carried out to the cell in the set of the interfered cell；
Result to each disturbance reconstruction and after deleting has carried out offset compensation.
Wherein, the determining interfered cell set, comprising:
Determine that the first interfered cell is gathered according to the notification information of base station；
Obtain the power of serving cell；
If the power of the serving cell is less than the power of any adjacent area in the set of first interfered cell, the is obtained
The power of one adjacent area, wherein the power of first adjacent area is the minimum value of the power of all adjacent areas；
When meeting the following conditions simultaneously, the serving cell is added in the set of first interfered cell, is constituted dry
Disturb set of cells, the condition are as follows:
The ratio of the power of the serving cell and the power of first adjacent area is greater than or equal to preset threshold, the clothes
CRS (Cell-specific reference signals, the specific ginseng of cell of an adjacent area in cell of being engaged in and the adjacent area
Examine signal) ratio of the power of conflict, the power of the serving cell and conflict adjacent area is greater than the preset threshold, wherein described
Conflict adjacent area is the adjacent area to conflict with the CRS of the serving cell.
Wherein, the cell in the set of the interfered cell successively carries out disturbance reconstruction and deletion, comprising:
Determine whether serving cell is dispatched in NABS (Non-ABS, normal sub-frames)；
If serving cell scheduling on NABS, to the adjacent area in the set of the interfered cell, using being stored in caching
Almost blank subframe ABS on the first PDP (Power Delay Profile, power delay spectrum), the first SINR that measure
(Signal to Interference plus Noise Ratio, Signal to Interference plus Noise Ratio) carries out disturbance reconstruction and deletes
It removes；
If the serving cell scheduling, to the adjacent area in the set of the interfered cell, measures on ABS using on ABS
Obtained the 2nd PDP, the 2nd SI NR carries out disturbance reconstruction and deletion；
Wherein, the corresponding frequency domain filtering order in adjacent area is less than the corresponding frequency domain filtering order of serving cell.
Wherein, the first Signal to Interference plus Noise Ratio SINR is that upper ABS subframe measures obtained SINR for the second time.
Wherein, the result to each disturbance reconstruction and after deleting has carried out offset compensation, comprising:
Least square (least-square estimation, LS) estimation is carried out to the target adjacent area in the adjacent area；
MMSE (Minimum mean square error estimation, lowest mean square are carried out to the target adjacent area
Estimation error)；
The target adjacent area is eliminated；
By the result after elimination divided by 1-Wk, obtain the target adjacent area has offset compensation result, wherein the Wk is
Weight coefficient.
It wherein, include serving cell in the interfered cell set, the method also includes:
According to having offset compensation as a result, compensating to the serving cell.
Second aspect, the embodiment of the present invention provide a kind of signal handling equipment, comprising: memory, processor and are stored in
On the memory and the computer program that can run on the processor；It is characterized in that,
The processor executes following process for reading the program in memory:
Determine that interfered cell is gathered, wherein including at least one adjacent area in the set of the interfered cell；
Disturbance reconstruction and deletion are successively carried out to the cell in the set of the interfered cell；
Result to each disturbance reconstruction and after deleting has carried out offset compensation.
Wherein, the processor is also used to read the program in memory, executes following process:
Determine that the first interfered cell is gathered according to the notification information of base station；
Obtain the power of serving cell；
If the power of the serving cell is less than the power of any adjacent area in the set of first interfered cell, the is obtained
The power of one adjacent area, wherein the power of first adjacent area is the minimum value of the power of all adjacent areas；
When meeting the following conditions simultaneously, the serving cell is added in the set of first interfered cell, is constituted dry
Disturb set of cells, the condition are as follows:
The ratio of the power of the serving cell and the power of first adjacent area is greater than or equal to preset threshold, the clothes
Business cell conflicts with the cell specific reference signal CRS of an adjacent area in the adjacent area, the power of the serving cell and punching
The ratio of the power of prominent adjacent area is greater than the preset threshold, wherein the conflict adjacent area is to conflict with the CRS of the serving cell
Adjacent area.
Wherein, the processor is also used to read the program in memory, executes following process:
Determine whether serving cell is dispatched on normal sub-frames NABS；
If serving cell scheduling on NABS, to the adjacent area in the set of the interfered cell, using being stored in caching
Almost blank subframe ABS on the first power delay spectrum PDP, the first Signal to Interference plus Noise Ratio SINR that measure carry out
Disturbance reconstruction and deletion；
If the serving cell scheduling, to the adjacent area in the set of the interfered cell, measures on ABS using on ABS
Obtained the 2nd PDP, the 2nd SI NR carries out disturbance reconstruction and deletion；
Wherein, the corresponding frequency domain filtering order in adjacent area is less than the corresponding frequency domain filtering order of serving cell.
Wherein, the first Signal to Interference plus Noise Ratio SINR is that upper ABS subframe measures obtained SINR for the second time.
Wherein, the processor is also used to read the program in memory, executes following process:
Least square LS estimation is carried out to the target adjacent area in the adjacent area；
Minimum Mean Squared Error estimation MMSE is carried out to the target adjacent area；
The target adjacent area is eliminated；
By the result after elimination divided by 1-Wk, obtain the target adjacent area has offset compensation result, wherein the Wk is
Weight coefficient.
Wherein, the processor is also used to read the program in memory, executes following process:
According to having offset compensation as a result, compensating to the serving cell.
The third aspect, the embodiment of the present invention provide a kind of signal processing apparatus, comprising:
Determining module, for determining that interfered cell is gathered, wherein including at least one adjacent area in the set of the interfered cell；
Disturbance reconstruction and removing module, for successively carrying out disturbance reconstruction to the cell in the set of the interfered cell and deleting
It removes；
There is offset compensation module, has carried out offset compensation for the result to each disturbance reconstruction and after deleting.
Wherein, the determining module includes:
First determines submodule, determines that the first interfered cell is gathered for the notification information according to base station；
First acquisition submodule, for obtaining the power of serving cell；
Second acquisition submodule, if the power for the serving cell is any less than in the set of first interfered cell
The power of adjacent area then obtains the power of the first adjacent area, wherein the power of first adjacent area is the minimum of the power of all adjacent areas
Value；
Second determines submodule, for being added in the set of first interfered cell when meeting the following conditions simultaneously
The serving cell constitutes interfered cell set, the condition are as follows:
The ratio of the power of the serving cell and the power of first adjacent area is greater than or equal to preset threshold, the clothes
Business cell conflicts with the cell specific reference signal CRS of an adjacent area in the adjacent area, the power of the serving cell and punching
The ratio of the power of prominent adjacent area is greater than the preset threshold, wherein the conflict adjacent area is to conflict with the CRS of the serving cell
Adjacent area.
Wherein, the disturbance reconstruction and removing module include:
Judging submodule, for determining whether serving cell is dispatched in normal sub-frames NABS；
First disturbance reconstruction and deletion submodule are small to the interference if dispatching for the serving cell in NABS
Area set in adjacent area, using the first power delay spectrum PDP measured on the almost blank subframe ABS stored in caching,
First Signal to Interference plus Noise Ratio SINR carries out disturbance reconstruction and deletion；
Second disturbance reconstruction and deletion submodule, if dispatching for the serving cell in ABS, to the interfered cell
Adjacent area in set carries out disturbance reconstruction and deletion using the 2nd PDP, the 2nd SI NR measured on ABS；
Wherein, the corresponding frequency domain filtering order in adjacent area is less than the corresponding frequency domain filtering order of serving cell.
Wherein, the first Signal to Interference plus Noise Ratio SINR is that upper ABS subframe measures obtained SINR for the second time.
Wherein, described to there is the offset compensation module to include:
First estimation submodule, for carrying out least square LS estimation to the target adjacent area in the adjacent area；
Second estimation submodule, for carrying out Minimum Mean Squared Error estimation MMSE to the target adjacent area；
First eliminates submodule, for eliminating to the target adjacent area；
Submodule is handled, for the result after eliminating divided by 1-Wk, obtain the target adjacent area has offset compensation knot
Fruit, wherein the Wk is weight coefficient.
Wherein, described device further include:
Processing module, for when including serving cell in the set of the interfered cell, according to having offset compensation as a result, to institute
Serving cell is stated to compensate.
Fourth aspect, the embodiment of the present invention provide a kind of computer readable storage medium, for storing computer program, institute
State the step realized in method as described in relation to the first aspect when computer program is executed by processor.
The advantageous effects of the above technical solutions of the present invention are as follows:
In embodiments of the present invention, after the cell in gathering interfered cell carries out disturbance reconstruction and deletes, to interference
The problem of adjacent area in set of cells has carried out offset compensation, becomes Biased estimator so as to avoid LS in the prior art estimation,
Improve the performance of system.
Detailed description of the invention
Fig. 1 is the flow chart of the signal processing method of the embodiment of the present invention；
Fig. 2 is the FEICIC overall flow block diagram after optimization of the embodiment of the present invention；
Fig. 3 is the process schematic that interfered cell set is determined in the embodiment of the present invention；
Fig. 4 is the process schematic that disturbance reconstruction and deletion are carried out in the embodiment of the present invention；
Fig. 5 is to carry out the process schematic for having offset compensation in the embodiment of the present invention；
Fig. 6 is the schematic diagram of signal processing apparatus in the embodiment of the present invention；
Fig. 7 is the structure chart of signal processing apparatus in the embodiment of the present invention；
Fig. 8 is the schematic diagram of signal processing apparatus of the embodiment of the present invention.
Specific embodiment
Below in conjunction with drawings and examples, specific embodiments of the present invention will be described in further detail.Following reality
Example is applied for illustrating the present invention, but is not intended to limit the scope of the invention.
As shown in Figure 1, the signal processing method of the embodiment of the present invention, comprising:
Step 101 determines that interfered cell is gathered, wherein including at least one adjacent area in the set of the interfered cell.
In this step, determine that the first interfered cell is gathered according to the notification information of base station first.Under normal conditions, usually
In the case of base station notice CRS relevant information cell be UE required for consider strong jamming adjacent area.In embodiments of the present invention, sharp
The first interfered cell set is constituted with these strong jamming adjacent areas.
Then, obtain the serving cell power (such as RSRP (Reference Signal Receiving Power,
Reference Signal Received Power)).If the power of the serving cell less than the first interfered cell gather in any adjacent area power,
The power of the first adjacent area is then obtained, wherein the power of first adjacent area is the minimum value of the power of all adjacent areas.It is full when simultaneously
When sufficient the following conditions, the serving cell is added in the set of first interfered cell, constitutes interfered cell set, the item
Part are as follows:
The ratio of the power of the serving cell and the power of first adjacent area is greater than or equal to preset threshold, the clothes
Business cell conflicts with the cell specific reference signal CRS of an adjacent area in the adjacent area, the power of the serving cell and punching
The ratio of the power of prominent adjacent area is greater than the preset threshold, wherein the conflict adjacent area is to conflict with the CRS of the serving cell
Adjacent area.
In the prior art, power sequence is carried out according to RSRP to all adjacent areas and serving cell, if the function of serving cell
Rate is most weak, then deletes serving cell from the set of cells that interference is deleted, i.e., do not delete serving cell the mistake compensated again
Journey.And in embodiments of the present invention, by the above-mentioned means, serving cell can be included in interference set to be deleted, finally taken
The compensation for cell of being engaged in, thus further lifting system performance.
Step 102 successively carries out disturbance reconstruction and deletion to the cell in the set of the interfered cell.
In this step, it can first determine that whether serving cell is dispatched on NABS.
If serving cell scheduling on NABS, to the adjacent area in the set of the interfered cell, using being stored in caching
Almost blank subframe ABS on the first PDP, the first SINR that measure carry out disturbance reconstruction and deletion；
If the serving cell scheduling, to the adjacent area in the set of the interfered cell, measures on ABS using on ABS
Obtained the 2nd PDP, the 2nd SI NR carries out disturbance reconstruction and deletion；
Wherein, the corresponding frequency domain filtering order in adjacent area is less than the corresponding frequency domain filtering order of serving cell.For example, interference is small
The corresponding frequency domain filtering order in area, which is less than, to be reduced to 1/2 or so of existing order from existing 12 rank.
Wherein, the first SINR is that upper ABS subframe measures obtained SINR for the second time.
Step 103, the result to each disturbance reconstruction and after deleting have carried out offset compensation.
In this step, offset compensation only has been carried out to adjacent area.Specifically, LS can be carried out to the target adjacent area in the adjacent area
Estimation, then MMSE estimation is carried out to the target adjacent area, then the target adjacent area is eliminated.Finally, after eliminating
Result divided by 1-Wk, obtain the target adjacent area has offset compensation result, wherein the Wk be weight coefficient.
By this step, the LS estimated result that can avoid serving cell becomes Biased estimator.
In embodiments of the present invention, after the cell in gathering interfered cell carries out disturbance reconstruction and deletes, to interference
The problem of adjacent area in set of cells has carried out offset compensation, becomes Biased estimator so as to avoid LS in the prior art estimation,
Improve the performance of system.
As shown in Fig. 2, including the following steps: for the FEICIC overall flow block diagram after optimization
Step 201 determines that interfered cell is gathered.
In this step, setting one can match parameter alpha.For including two adjacent areas during interfered cell is gathered, note service is small
Area's power (by taking RSRP as an example) is P_UE, and 1 power of adjacent area is P_Ne1, and the power of adjacent area 2 is P_Ne2.It is adjacent after power sorts
Area's power is orderly, P_Ne1 > P_Ne2.
Power by the power of serving cell respectively with adjacent area 1,2 is compared, to determine whether serving cell is brought into
Interfered cell set.
Specifically, as shown in connection with fig. 3, if the power of the serving cell and first adjacent area (most weak small of power
Area is in this embodiment adjacent area 2) the ratio of power be greater than or equal to α, one in the serving cell and the adjacent area
The ratio of the power of the CRS conflict of adjacent area, the power of the serving cell and conflict adjacent area is greater than the α, wherein the conflict
Adjacent area is the adjacent area to conflict with the CRS of the serving cell, then, serving cell can be brought into the set of interfered cell, otherwise
It does not bring into the set of interfered cell.
Adjacent area is traversed, if the ratio of the power of serving cell and adjacent area power is more than or equal to α, first deletes local area, then successively
Delete adjacent area.Otherwise, adjacent area 1 is first deleted, then repeats to judge.
Step 202 successively carries out disturbance reconstruction and deletion to the cell in the set of the interfered cell.
When serving cell is in NABS subframe scheduling, since serving cell will receive the serious interference in adjacent area, channel estimation
It can become extremely inaccurate, and then lead to whole penalty.Therefore, in embodiments of the present invention, determine that the service is small
Whether dispatch on normal sub-frames NABS in area.
As shown in figure 4, if the serving cell is dispatched on NABS, to the adjacent area in the set of the interfered cell, if
Current cell to be deleted is adjacent area, then is done using the first PDP, the first SINR that measure on the ABS stored in caching
Disturb reconstruction and deletion；If serving cell scheduling on ABS, to the adjacent area in the set of the interfered cell, if currently to
Deletion cell is adjacent area, then carries out disturbance reconstruction and deletion using the 2nd PDP, the 2nd SI NR measured on ABS.
Wherein, the corresponding frequency domain filtering order in adjacent area is less than the corresponding frequency domain filtering order of serving cell.
On the basis of existing scheme, during carrying out IC_CHE (disturbance reconstruction and deletion) to adjacent area, by adjacent area
Frequency domain filtering order from existing 12 rank be reduced to its 1/2 or so.Since adjacent area is without being filtered data subcarrier,
So can be obtained more accurately CRS or PBCH (Physical Broadcast Channel, physics without too high order
Broadcast channel) channel estimation at position, therefore the filter order for reducing adjacent area can be in the case where not losing performance, significantly
Reduce complexity.
Step 203, the result to each disturbance reconstruction and after deleting have carried out offset compensation.
For receiving signal Yk=Y0k+Y1k+N0k=H0kS0k+H1kS1k+N0k, wherein Y0kIt is that SC (serving cell) receives letter
Number, Y1kIt is that NC (adjacent area) receives signal, S0kIt is that SC (serving cell) sends signal, S1kIt is that NC (adjacent area) sends signal, N0kIt is white
Noise, H0k, H1kIndicate channel coefficients.
It mainly comprises the following processes herein:
(1) LS estimation is done to NC:
(2) MMSE estimation is done to NC:
(3) NC is eliminated:
It is as follows to the LS estimation procedure of SC:
Ask expectation as follows:
So the LS estimation for also needing otherwise to be SC after finishing IC after IC divided by (1-Wk) is Biased estimator.Wk
For the weight coefficient generated when two-dimentional MMSE filtering.
As shown in figure 5, the process for having offset compensation includes:
W_FD is obtained from frequency domain filtering coefficient, W_TD is obtained from time domain filter coefficients, Wk is obtained by W_FD and W_TD,
And the index after estimating LS is converted into index k physically in interference reconstruct part, this IC terminates, by data divided by (1-
Wk it) zooms in and out.And for serving cell then without having offset compensation, directly progress IC process and the mistake of CRS, PBCH compensation
Journey.
If including serving cell in step 204, interfered cell set, basis has offset compensation as a result, to the clothes
Business cell compensates.
The realization process of this step is identical with the prior art.Finally, carrying out channel to serving cell further according to compensation result
Estimation, MIMO (Multiple-Input Multiple-Output, multiple-input and multiple-output) detection etc..
It in embodiments of the present invention, can 0.5~1dB of lifting system performance when serving cell is slightly weaker than adjacent area；It solves
The problem of IC process makes LS estimation become Biased estimator, systematic entirety is enabled to promote 0.5~1dB；Reduce FEICIC
Whole implementation complexity improves performance when scheduling NABS subframe.
As shown in fig. 6, the signal processing apparatus of the embodiment of the present invention, comprising:
Determining module 601, for determining that interfered cell is gathered, wherein including that at least one is adjacent in the set of the interfered cell
Area；Disturbance reconstruction and removing module 602, for successively carrying out disturbance reconstruction to the cell in the set of the interfered cell and deleting
It removes；There is offset compensation module 603, has carried out offset compensation for result of the root to each disturbance reconstruction and after deleting.
Wherein, the determining module 601 includes: first to determine submodule, determines for the notification information according to base station
One interfered cell set；First acquisition submodule, for obtaining the power of serving cell；Second acquisition submodule, if being used for institute
The power for stating serving cell is less than the power of any adjacent area in the set of first interfered cell, then obtains the function of the first adjacent area
Rate, wherein the power of first adjacent area is the minimum value of the power of all adjacent areas；Second determines submodule, for that ought expire simultaneously
When sufficient the following conditions, the serving cell is added in the set of first interfered cell, constitutes interfered cell set, the item
Part are as follows:
The ratio of the power of the serving cell and the power of first adjacent area is greater than or equal to preset threshold, the clothes
Business cell conflicts with the cell specific reference signal CRS of an adjacent area in the adjacent area, the power of the serving cell and punching
The ratio of the power of prominent adjacent area is greater than the preset threshold, wherein the conflict adjacent area is to conflict with the CRS of the serving cell
Adjacent area.
Wherein, the disturbance reconstruction and removing module 602 include:
Judging submodule, for determining whether serving cell is dispatched in normal sub-frames NABS；It first disturbance reconstruction and deletes
Except submodule, if for serving cell scheduling in NABS, to the adjacent area in the set of the interfered cell, using in caching
The first power delay spectrum PDP, the first Signal to Interference plus Noise Ratio SINR measured on the almost blank subframe ABS of storage
Carry out disturbance reconstruction and deletion；Second disturbance reconstruction and submodule is deleted, if for serving cell scheduling in ABS, it is right
Adjacent area in the set of the interfered cell, using the 2nd PDP, the 2nd SI NR measured on ABS carry out disturbance reconstruction and
It deletes；
Wherein, the corresponding frequency domain filtering order in adjacent area is less than the corresponding frequency domain filtering order of serving cell.
Wherein, the first Signal to Interference plus Noise Ratio SINR is that upper ABS subframe measures obtained SINR for the second time.
Wherein, described to there is the offset compensation module 603 to include:
First estimation submodule, for carrying out least square LS estimation to the target adjacent area in the adjacent area；Second estimation
Submodule, for carrying out Minimum Mean Squared Error estimation MMSE to the target adjacent area；First eliminates submodule, for the mesh
It is eliminated mark adjacent area；Submodule is handled, for the result after eliminating divided by 1-Wk, obtain the target adjacent area has partially
Compensation result, wherein the Wk is weight coefficient.
As shown in fig. 7, described device may also include that processing module 604, for working as in the set of the interfered cell including clothes
When cell of being engaged in, according to having offset compensation as a result, compensating to the serving cell.
The working principle of device of the present invention can refer to the description of preceding method embodiment.
In embodiments of the present invention, after the cell in gathering interfered cell carries out disturbance reconstruction and deletes, to interference
The problem of adjacent area in set of cells has carried out offset compensation, becomes Biased estimator so as to avoid LS in the prior art estimation,
Improve the performance of system.
As shown in figure 8, the signal handling equipment of the embodiment of the present invention, comprising:
Processor 700 executes following process for reading the program in memory 720:
Determine that interfered cell is gathered, wherein including at least one adjacent area in the set of the interfered cell；It is small to the interference
Cell in area's set successively carries out disturbance reconstruction and deletion；Result to each disturbance reconstruction and after deleting has carried out inclined benefit
It repays；
Transceiver 710, for sending and receiving data under the control of processor 700.
Wherein, in Fig. 7, bus architecture may include the bus and bridge of any number of interconnection, specifically by processor 700
The various circuits for the memory that the one or more processors and memory 720 of representative represent link together.Bus architecture is also
Various other circuits of such as peripheral equipment, voltage-stablizer and management circuit or the like can be linked together, these are all
It is it is known in the art, therefore, it will not be further described herein.Bus interface provides interface.Transceiver 710 can
To be multiple element, that is, includes transmitter and transceiver, the list for communicating over a transmission medium with various other devices is provided
Member.Processor 700, which is responsible for management bus architecture and common processing, memory 720, can store processor 700 and is executing operation
When used data.
Processor 700, which is responsible for management bus architecture and common processing, memory 720, can store processor 700 and is holding
Used data when row operation.
Processor 700 is also used to read the computer program, executes following steps:
Determine that the first interfered cell is gathered according to the notification information of base station；
Obtain the power of serving cell；
If the power of the serving cell is less than the power of any adjacent area in the set of first interfered cell, the is obtained
The power of one adjacent area, wherein the power of first adjacent area is the minimum value of the power of all adjacent areas；
When meeting the following conditions simultaneously, the serving cell is added in the set of first interfered cell, is constituted dry
Disturb set of cells, the condition are as follows:
The ratio of the power of the serving cell and the power of first adjacent area is greater than or equal to preset threshold, the clothes
Business cell conflicts with the cell specific reference signal CRS of an adjacent area in the adjacent area, the power of the serving cell and punching
The ratio of the power of prominent adjacent area is greater than the preset threshold, wherein the conflict adjacent area is to conflict with the CRS of the serving cell
Adjacent area.
Processor 700 is also used to read the computer program, executes following steps:
Determine whether serving cell is dispatched on normal sub-frames NABS；
If serving cell scheduling on NABS, to the adjacent area in the set of the interfered cell, using being stored in caching
Almost blank subframe ABS on the first power delay spectrum PDP, the first Signal to Interference plus Noise Ratio SINR that measure carry out
Disturbance reconstruction and deletion；
If the serving cell scheduling, to the adjacent area in the set of the interfered cell, measures on ABS using on ABS
Obtained the 2nd PDP, the 2nd SI NR carries out disturbance reconstruction and deletion；
Wherein, the corresponding frequency domain filtering order in adjacent area is less than the corresponding frequency domain filtering order of serving cell.
Wherein, the first Signal to Interference plus Noise Ratio SINR is that upper ABS subframe measures obtained SINR for the second time.
Processor 700 is also used to read the computer program, executes following steps:
Least square LS estimation is carried out to the target adjacent area in the adjacent area；
Minimum Mean Squared Error estimation MMSE is carried out to the target adjacent area；
The target adjacent area is eliminated；
By the result after elimination divided by 1-Wk, obtain the target adjacent area has offset compensation result, wherein the Wk is
Weight coefficient.
Processor 700 is also used to read the computer program, executes following steps:
According to having offset compensation as a result, compensating to the serving cell.
In addition, the computer readable storage medium of the embodiment of the present invention, for storing computer program, the computer journey
Sequence can be executed by processor and perform the steps of
Determine that interfered cell is gathered, wherein including at least one adjacent area in the set of the interfered cell；
Disturbance reconstruction and deletion are successively carried out to the cell in the set of the interfered cell；
Result to each disturbance reconstruction and after deleting has carried out offset compensation.
Wherein, the determining interfered cell set, comprising:
Determine that the first interfered cell is gathered according to the notification information of base station；
Obtain the power of serving cell；
If the power of the serving cell is less than the power of any adjacent area in the set of first interfered cell, the is obtained
The power of one adjacent area, wherein the power of first adjacent area is the minimum value of the power of all adjacent areas；
When meeting the following conditions simultaneously, the serving cell is added in the set of first interfered cell, is constituted dry
Disturb set of cells, the condition are as follows:
The ratio of the power of the serving cell and the power of first adjacent area is greater than or equal to preset threshold, the clothes
Business cell conflicts with the cell specific reference signal CRS of an adjacent area in the adjacent area, the power of the serving cell and punching
The ratio of the power of prominent adjacent area is greater than the preset threshold, wherein the conflict adjacent area is to conflict with the CRS of the serving cell
Adjacent area.
Wherein, the cell in the set of the interfered cell carries out disturbance reconstruction and deletion, comprising:
Determine whether serving cell is dispatched on normal sub-frames NABS；
If serving cell scheduling on NABS, to the adjacent area in the set of the interfered cell, using being stored in caching
Almost blank subframe ABS on the first power delay spectrum PDP, the first Signal to Interference plus Noise Ratio SINR that measure carry out
Disturbance reconstruction and deletion；
If the serving cell scheduling, to the adjacent area in the set of the interfered cell, measures on ABS using on ABS
Obtained the 2nd PDP, the 2nd SI NR carries out disturbance reconstruction and deletion；
Wherein, the corresponding frequency domain filtering order in adjacent area is less than the corresponding frequency domain filtering order of serving cell.
Wherein, the first Signal to Interference plus Noise Ratio SINR is that upper ABS subframe measures obtained SINR for the second time.
Wherein, the result to each disturbance reconstruction and after deleting has carried out offset compensation, comprising:
Least square LS estimation is carried out to the target adjacent area in the adjacent area；
Minimum Mean Squared Error estimation MMSE is carried out to the target adjacent area；
The target adjacent area is eliminated；
By the result after elimination divided by 1-Wk, obtain the target adjacent area has offset compensation result, wherein the Wk is
Weight coefficient.
It wherein, include serving cell in the interfered cell set, the method also includes:
According to having offset compensation as a result, compensating to the serving cell.
In several embodiments provided herein, it should be understood that disclosed method and apparatus, it can be by other
Mode realize.For example, the apparatus embodiments described above are merely exemplary, for example, the division of the unit, only
For a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components can combine
Or it is desirably integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed phase
Coupling, direct-coupling or communication connection between mutually can be through some interfaces, the INDIRECT COUPLING or communication of device or unit
Connection can be electrical property, mechanical or other forms.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that the independent physics of each unit includes, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of hardware adds SFU software functional unit.
The above-mentioned integrated unit being realized in the form of SFU software functional unit can store and computer-readable deposit at one
In storage media.Above-mentioned SFU software functional unit is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or the network equipment etc.) executes receiving/transmission method described in each embodiment of the present invention
Part steps.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (Read-Only Memory, abbreviation
ROM), random access memory (Random Access Memory, abbreviation RAM), magnetic or disk etc. are various can store
The medium of program code.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (19)
1. a kind of signal processing method characterized by comprising
Determine that interfered cell is gathered, wherein including at least one adjacent area in the set of the interfered cell；
Disturbance reconstruction and deletion are successively carried out to the cell in the set of the interfered cell；
Result to each disturbance reconstruction and after deleting has carried out offset compensation.
2. the method according to claim 1, wherein the determining interfered cell set, comprising:
Determine that the first interfered cell is gathered according to the notification information of base station；
Obtain the power of serving cell；
If the power of the serving cell is less than the power of any adjacent area in the set of first interfered cell, it is adjacent to obtain first
The power in area, wherein the power of first adjacent area is the minimum value of the power of all adjacent areas；
When meeting the following conditions simultaneously, the serving cell is added in the set of first interfered cell, it is small to constitute interference
Area's set, the condition are as follows:
The ratio of the power of the serving cell and the power of first adjacent area is small more than or equal to preset threshold, the service
Area conflicts with the cell specific reference signal CRS of an adjacent area in the adjacent area, the power of the serving cell and conflict are adjacent
The ratio of the power in area is greater than the preset threshold, wherein the conflict adjacent area is the neighbour to conflict with the CRS of the serving cell
Area.
3. the method according to claim 1, wherein it is described to the interfered cell set in cell successively into
Row disturbance reconstruction and deletion, comprising:
Determine whether serving cell is dispatched on normal sub-frames NABS；
If the serving cell scheduling is on NABS, several using what is stored in caching to the adjacent area in the set of the interfered cell
The first power delay spectrum PDP, the first Signal to Interference plus Noise Ratio SINR measured on blank subframe ABS is interfered
It rebuilds and deletes；
If the serving cell scheduling, to the adjacent area in the set of the interfered cell, is obtained on ABS using measuring on ABS
The 2nd PDP, the 2nd SI NR carry out disturbance reconstruction and deletion；
Wherein, the corresponding frequency domain filtering order in adjacent area is less than the corresponding frequency domain filtering order of serving cell.
4. according to the method described in claim 3, it is characterized in that, the first Signal to Interference plus Noise Ratio SINR is upper one
ABS subframe measures obtained SINR for the second time.
5. the method according to claim 1, wherein the result to each disturbance reconstruction and after deleting carries out
There is offset compensation, comprising:
Least square LS estimation is carried out to the target adjacent area in the adjacent area；
Minimum Mean Squared Error estimation MMSE is carried out to the target adjacent area；
The target adjacent area is eliminated；
By the result after elimination divided by 1-Wk, obtain the target adjacent area has offset compensation result, wherein the Wk is power system
Number.
6. the method according to claim 1, wherein the interfered cell set in include serving cell, it is described
Method further include:
According to having offset compensation as a result, compensating to the serving cell.
7. a kind of signal handling equipment characterized by comprising memory, processor and be stored on the memory and can
The computer program run on the processor；It is characterized in that,
The processor executes following process for reading the program in memory:
Determine that interfered cell is gathered, wherein including at least one adjacent area in the set of the interfered cell；
Disturbance reconstruction and deletion are successively carried out to the cell in the set of the interfered cell；
Result to each disturbance reconstruction and after deleting has carried out offset compensation.
8. equipment according to claim 7, which is characterized in that the processor is also used to read the program in memory,
Execute following process:
Determine that the first interfered cell is gathered according to the notification information of base station；
Obtain the power of serving cell；
If the power of the serving cell is less than the power of any adjacent area in the set of first interfered cell, it is adjacent to obtain first
The power in area, wherein the power of first adjacent area is the minimum value of the power of all adjacent areas；
When meeting the following conditions simultaneously, the serving cell is added in the set of first interfered cell, it is small to constitute interference
Area's set, the condition are as follows:
The ratio of the power of the serving cell and the power of first adjacent area is small more than or equal to preset threshold, the service
Area conflicts with the cell specific reference signal CRS of an adjacent area in the adjacent area, the power of the serving cell and conflict are adjacent
The ratio of the power in area is greater than the preset threshold, wherein the conflict adjacent area is the neighbour to conflict with the CRS of the serving cell
Area.
9. equipment according to claim 7, which is characterized in that the processor is also used to read the program in memory,
Execute following process:
Determine whether serving cell is dispatched on normal sub-frames NABS；
If the serving cell scheduling is on NABS, several using what is stored in caching to the adjacent area in the set of the interfered cell
The first power delay spectrum PDP, the first Signal to Interference plus Noise Ratio SINR measured on blank subframe ABS is interfered
It rebuilds and deletes；
If the serving cell scheduling, to the adjacent area in the set of the interfered cell, is obtained on ABS using measuring on ABS
The 2nd PDP, the 2nd SI NR carry out disturbance reconstruction and deletion；
Wherein, the corresponding frequency domain filtering order in adjacent area is less than the corresponding frequency domain filtering order of serving cell.
10. equipment according to claim 9, which is characterized in that the first Signal to Interference plus Noise Ratio SINR is upper
One ABS subframe measures obtained SINR for the second time.
11. equipment according to claim 7, which is characterized in that the processor is also used to read the program in memory,
Execute following process:
Least square LS estimation is carried out to the target adjacent area in the adjacent area；
Minimum Mean Squared Error estimation MMSE is carried out to the target adjacent area；
The target adjacent area is eliminated；
By the result after elimination divided by 1-Wk, obtain the target adjacent area has offset compensation result, wherein the Wk is power system
Number.
12. equipment according to claim 7, which is characterized in that the processor is also used to read the program in memory,
Execute following process:
According to having offset compensation as a result, compensating to the serving cell.
13. a kind of signal processing apparatus characterized by comprising
Determining module, for determining that interfered cell is gathered, wherein including at least one adjacent area in the set of the interfered cell；
Disturbance reconstruction and removing module, for successively carrying out disturbance reconstruction and deletion to the cell in the set of the interfered cell；
There is offset compensation module, has carried out offset compensation for the result to each disturbance reconstruction and after deleting.
14. device according to claim 13, which is characterized in that the determining module includes:
First determines submodule, determines that the first interfered cell is gathered for the notification information according to base station；
First acquisition submodule, for obtaining the power of serving cell；
Second acquisition submodule, if the power for the serving cell is less than any adjacent area in the set of first interfered cell
Power, then obtain the power of the first adjacent area, wherein the power of first adjacent area be all adjacent areas power minimum value；
Second determines submodule, described in being added in the set of first interfered cell when meeting the following conditions simultaneously
Serving cell constitutes interfered cell set, the condition are as follows:
The ratio of the power of the serving cell and the power of first adjacent area is small more than or equal to preset threshold, the service
Area conflicts with the cell specific reference signal CRS of an adjacent area in the adjacent area, the power of the serving cell and conflict are adjacent
The ratio of the power in area is greater than the preset threshold, wherein the conflict adjacent area is the neighbour to conflict with the CRS of the serving cell
Area.
15. device according to claim 13, which is characterized in that the disturbance reconstruction and removing module include:
Judging submodule, for determining whether serving cell is dispatched in normal sub-frames NABS；
First disturbance reconstruction and deletion submodule, if dispatching for the serving cell in NABS, to the interfered cell collection
Adjacent area in conjunction utilizes the first power delay spectrum PDP measured on the almost blank subframe ABS stored in caching, first
Signal to Interference plus Noise Ratio SINR carries out disturbance reconstruction and deletion；
Second disturbance reconstruction and deletion submodule, if gathering in ABS the interfered cell for serving cell scheduling
In adjacent area, utilize the 2nd PDP, the 2nd SI NR that measure on ABS to carry out disturbance reconstruction and deletion；
Wherein, the corresponding frequency domain filtering order in adjacent area is less than the corresponding frequency domain filtering order of serving cell.
16. device according to claim 15, which is characterized in that the first Signal to Interference plus Noise Ratio SINR is upper
One ABS subframe measures obtained SINR for the second time.
17. device according to claim 13, which is characterized in that described have the offset compensation module to include:
First estimation submodule, for carrying out least square LS estimation to the target adjacent area in the adjacent area；
Second estimation submodule, for carrying out Minimum Mean Squared Error estimation MMSE to the target adjacent area；
First eliminates submodule, for eliminating to the target adjacent area；
Handle submodule, for the result after eliminating divided by 1-Wk, obtain the target adjacent area have offset compensation as a result, its
In, the Wk is weight coefficient.
18. device according to claim 13, which is characterized in that described device further include:
Processing module, for when including serving cell in the set of the interfered cell, according to having offset compensation as a result, to the clothes
Business cell compensates.
19. a kind of computer readable storage medium, for storing computer program, which is characterized in that the computer program quilt
It realizes when processor executes such as the step in method described in any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710951890.8A CN109672491B (en) | 2017-10-13 | 2017-10-13 | Signal processing method, device, equipment and computer readable storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710951890.8A CN109672491B (en) | 2017-10-13 | 2017-10-13 | Signal processing method, device, equipment and computer readable storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109672491A true CN109672491A (en) | 2019-04-23 |
| CN109672491B CN109672491B (en) | 2020-04-17 |
Family
ID=66139927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710951890.8A Active CN109672491B (en) | 2017-10-13 | 2017-10-13 | Signal processing method, device, equipment and computer readable storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109672491B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130184018A1 (en) * | 2012-01-16 | 2013-07-18 | Qualcomm Incorporated | Intercell frequency offset compensation for frequency domain interference cancellation and equalization for downlink cellular systems |
| CN103428120A (en) * | 2012-05-25 | 2013-12-04 | 华为技术有限公司 | Method and apparatus for interference cancellation in long term evolution system, and method and apparatus for data sending in long term evolution system |
| CN104754623A (en) * | 2015-03-05 | 2015-07-01 | 京信通信技术(广州)有限公司 | Cell searching method and system based on interference elimination of LTE (Long Term Evolution) system |
-
2017
- 2017-10-13 CN CN201710951890.8A patent/CN109672491B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130184018A1 (en) * | 2012-01-16 | 2013-07-18 | Qualcomm Incorporated | Intercell frequency offset compensation for frequency domain interference cancellation and equalization for downlink cellular systems |
| CN103428120A (en) * | 2012-05-25 | 2013-12-04 | 华为技术有限公司 | Method and apparatus for interference cancellation in long term evolution system, and method and apparatus for data sending in long term evolution system |
| CN104754623A (en) * | 2015-03-05 | 2015-07-01 | 京信通信技术(广州)有限公司 | Cell searching method and system based on interference elimination of LTE (Long Term Evolution) system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109672491B (en) | 2020-04-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105340336B (en) | Communication control unit, communication control method, radio communications system and terminal device | |
| CN103684676B (en) | The notice of antenna port position relationship and definite method, system and device | |
| CN106549897B (en) | Use the interference elimination method of nonlinear filtering, device and computer-readable program medium | |
| CN108199819A (en) | The determining method and device of the transmission of control signaling, reception and information | |
| US9313678B2 (en) | Method and apparatus for measuring interference in a telecommunications system | |
| CN102986269B (en) | A kind of method and apparatus estimating down channel quality | |
| US9516528B2 (en) | Method for estimating interference within a serving cell, user equipment, computer program and computer program products | |
| CN107431589A (en) | Method and apparatus for handling and distributing uplink pilot | |
| CN104378128B (en) | The method that wireless receiving platform and the Radio frequency interference generated for platform mitigate | |
| CN105745985B (en) | A kind of method and device of Adaptive Modulation and Coding | |
| JP2014072893A (en) | Interference canceller and receiver | |
| JP6492334B2 (en) | Communication control apparatus, communication control method and information processing apparatus | |
| CN102571659B (en) | Interference noise estimation and interference inhibition method and corresponding system | |
| CN104066196A (en) | Method and device for determining remote radio unit (RRU) | |
| CN106533515A (en) | Antenna retraction method and base station | |
| CN103686762B (en) | WCDMA system cell coverage evaluation method and device | |
| KR20160121165A (en) | Method for interference cancellation and apparatus thereof | |
| US11425635B2 (en) | Small cell identification using machine learning | |
| CN105099964B (en) | A kind of method and apparatus of power level estimation and determining interfered cell | |
| CN106788938A (en) | The semi-orthogonal pilot design and channel estimation methods of a kind of user grouping | |
| CN109672491A (en) | A kind of signal processing method, device, equipment and computer readable storage medium | |
| CN109041215B (en) | CSI indoor AP positioning algorithm based on probability density | |
| CN106571857A (en) | Interference suppression method, network server and base station using the same | |
| CN107204817B (en) | Interference detection method and terminal | |
| CN103947148B (en) | Discrete transmission detecting device and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee after: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |
|
| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210608 Address after: 100085 1st floor, building 1, yard 5, Shangdi East Road, Haidian District, Beijing Patentee after: DATANG MOBILE COMMUNICATIONS EQUIPMENT Co.,Ltd. Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |
|
| TR01 | Transfer of patent right |