CN105009636A - Method, device and system for downlink interference coordination - Google Patents

Method, device and system for downlink interference coordination Download PDF

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Publication number
CN105009636A
CN105009636A CN201380002966.2A CN201380002966A CN105009636A CN 105009636 A CN105009636 A CN 105009636A CN 201380002966 A CN201380002966 A CN 201380002966A CN 105009636 A CN105009636 A CN 105009636A
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community
signal
cooperation modes
base station
noise ratio
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CN105009636B (en
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李小捷
辛嘉鹏
吴利华
李琦
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/367—Power values between minimum and maximum limits, e.g. dynamic range

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Disclosed in the present invention are a method, device and system for downlink interference coordination. The method comprises: a base station determines that the actual transmission power of a first cell is less than or equal to a preset maximum transmission power; the base station determines at least one user equipment (UE) and a cell where the at least one UE is located, and the at least one UE is the UE interfered when the first cell transmits signals using the preset maximum transmission power; the base station modifies the property of the at least one UE to Coordinated Multi-Point (COMP) user, and adds the first cell to the COMP cooperation set of the UE; the base station determines a number and selects a COMP cooperation mode for the UE according to the number, and the number is the total number of cells where the at least one UE is located.

Description

Method, device and system for downlink interference coordination
A kind of downlink interference collaboration method, apparatus and system technical field
The present invention relates to communication technical field, more particularly to a kind of downlink interference collaboration method, apparatus and system.Background technology
At present, senior long term evolution（Long Term Evolution Advanced, LTE-A) interference solution in system include it is a variety of, for example, coordinate multipoint（Coordinated multi-point, COMP) technology, its target is to be evaded or be converted into the signal useful to targeted customer to the interference of targeted customer by other cells, handling capacity is improved by base station cooperative transmission, especially cell edge throughput, and then improve cell edge covering, lifting edge customer experience.
Wherein, collaboration user and collaboration set selection are one of COMP key technologies, and its implementation has a variety of, for example：Determine serving cell and the Reference Signal Received Power of the adjacent cell of the serving cell that UE is measured（Reference Signal Received Power, RSRP) difference be less than the user of certain thresholding, the user is defined as collaboration user, and the adjacent cell related to calculating when determining the collaboration user is added to the collaboration set of the collaboration user.And for example, Signal to Interference plus Noise Ratio after being added according to user collaboration cell（Geometry change selection collaboration set), after cooperation, interference signal is become useful signal by the cooperation cell in addition to this cell, Geometry has larger lifting, when the Geometry liftings before and after cooperation are more than certain thresholding, this cooperation cell is the collaboration set of user, and corresponding user is collaboration user.
COMP key technology also includes：Combined Treatment (Joint Processing, JP) and cooperative scheduling and cooperative beam（CS/CB ).Wherein, collaborative process (Joint Processing, JP) can be divided into：Joint transmission
(Joint Transmission, JT), i.e., multiple COMP nodes simultaneous transmission data；With dynamic point selection（Dynamic Point Selection, DPS), i.e., from multiple one transmission data of COMP nodes dynamic select.Dynamic cooperative dispatches (Dynamic Coordinated Scheduling, DCS) and cooperative beam
In (Coordinated Beamforming, CBF), COMP host nodes can obtain data to be transferred, and COMP cooperative nodes obtain scheduling and beam forming decision information of the UE in host node, using not sending out or The strategy that selection is transmitted with the less user of serving cell orthogonality.
In existing COMP schemes, determine collaboration set and determine all only to consider the factor how collaboration user is benefited during cooperation mode, therefore can not effectively lift performance of the entire network.The content of the invention
The embodiment of the present invention provides a kind of downlink interference collaboration method, apparatus and system, during to the collaboration set selection in COMP interference coordination algorithms and cooperation mode selection, improves the throughput performance income of COMP technologies, effectively lifts performance of the entire network.
In a first aspect, a kind of downlink interference collaboration method provided in an embodiment of the present invention, including：Base station determines that the actual emission power of first community is less than or equal to default maximum transmission power；The base station determines the cell where at least one user equipment (UE) and at least one described UE, and at least one described UE is that the first community uses the UE interfered with during default maximum transmission power transmission signal;
The attribute modification of at least one UE is coordinate multipoint COMP user by the base station, and will first ' the area addition UE COMP collaboration sets；
The base station quantification, and be that the UE selects COMP cooperation modes, the sum of cell of the quantity for described in where at least one UE according to the quantity.
With reference in a first aspect, in the first possible implementation, the base station determines that the actual emission power of first community is less than or equal to before default maximum transmission power, in addition to：The base station determines the actual emission power of the first community.
With reference in a first aspect, or combine first aspect the first possible implementation, in second of possible implementation, the base station is determined as follows at least one described UE:
The base station determines the first signal to noise ratio and the second signal to noise ratio；Wherein, first signal to noise ratio is：When the first community uses default maximum transmission power transmission signal, the first signal to noise ratio that the first UE is detected；Second signal to noise ratio is：When the first community is using actual emission power transmission signal, the second signal to noise ratio that the first UE is detected；The serving cell of first UE is second community, and the second community is the adjacent cell of the first community； When the difference of first signal to noise ratio and second signal to noise ratio is more than default first thresholding, the base station determines dry 4 UE arrived especially when the first UE uses default maximum transmission power transmission signal for the first community.
After at least one described UE in a first aspect, in the third possible implementation, is determined in the base station, the base station determines the sum of the cell where at least one described UE.
With reference to first aspect, or combine the first possible implementation of first aspect, or combine second of possible implementation of first aspect, or combine the third possible implementation of first aspect, in the 4th kind of possible implementation, the base station is that the UE selects COMP cooperation modes according to the quantity, including：
If the quantity is more than default second thresholding, the base station is that the COMP cooperation modes of the UE selections are dynamic cooperative scheduling DCS modes.
With reference to first aspect, or combine the first possible implementation of first aspect, or combine second of possible implementation of first aspect, or combine the third possible implementation of first aspect, in the 5th kind of possible implementation, the base station is that the UE selects COMP cooperation modes according to the quantity, including：
If the quantity is less than or equal to default second thresholding, the base station is that the COMP cooperation modes of the UE selections are following any：Joint transmission JT cooperation modes, dynamic cooperative scheduling DCS cooperation modes and cooperative beam CBF cooperation modes.
With reference to the 5th kind of possible implementation of first aspect, in the 6th kind of possible implementation, if the quantity is less than or equal to the second thresholding, the base station is that the UE selects COMP cooperation modes according to the load of the first community.
With reference to the 6th kind of possible implementation of first aspect, in the 7th kind of possible implementation, the base station is that the UE selects COMP cooperation modes according to the load of the first community, including：When the load of the first community is more than default three thresholding, the base station is that the COMP cooperation modes of the UE selections are CBF cooperation modes.
With reference to the 6th kind of possible implementation of first aspect, in the 8th kind of possible implementation, the base station is that the UE selects COMP cooperation modes according to the load of the first community, including： When the load of the first community is less than or equal to default three thresholding, the base station is described
The COMP cooperation modes of UE selections are following any：JT cooperation modes and DCS cooperation modes.
With reference to the 8th kind of possible implementation of first aspect, in the 9th kind of possible implementation, when the load of the first community is less than or equal to default three thresholding, the base station is that the UE selects COMP cooperation modes according to the Signal to Interference plus Noise Ratio of the UE SRS signals received in told first community.
With reference to the 9th kind of possible implementation of first aspect, in the tenth kind of possible implementation, the base station is that the UE selects COMP cooperation modes according to the Signal to Interference plus Noise Ratio of the UE SRS signals received in told first community, including：
When the Signal to Interference plus Noise Ratio of the SRS signal of the UE is more than default four thresholding, the base station is that the COMP cooperation modes of the UE selections are JT cooperation modes.
With reference to the 9th kind of possible implementation of first aspect, in a kind of the tenth possible implementation, the base station is that the UE selects COMP cooperation modes according to the Signal to Interference plus Noise Ratio of the UE SRS signals received in told first community, including：
When the Signal to Interference plus Noise Ratio of the SRS signal of the UE is less than or equal to default four thresholding, the base station is that the COMP cooperation modes of the UE selections are DCS cooperation modes.
Second aspect, a kind of downlink interference collaboration device provided in an embodiment of the present invention, including：First module, for determining that the actual emission power of first community is less than or equal to default maximum transmission power；
Second unit, for determining the cell where at least one user equipment (UE) and at least one described UE, at least one described UE is that the first community uses the UE interfered with during default maximum transmission power transmission signal;
Third unit, for being coordinate multipoint COMP user by the attribute modification of at least one UE, and the first community is added the COMP collaboration sets of the UE；
Unit the 4th, is that the UE selects COMP cooperation modes, the sum of cell of the quantity for described in where at least one UE for quantification, and according to the quantity.
With reference to second aspect, in the first possible implementation, the first module is it is determined that the actual emission power of first community is additionally operable to less than or equal to before default maximum transmission power：Determine institute State the actual emission power of first community.
With reference to second aspect, or the first possible implementation of second aspect is combined, in second of possible implementation, the second unit is determined as follows at least one described UE:
Determine the first signal to noise ratio and the second signal to noise ratio；Wherein, first signal to noise ratio is：When the first community uses default maximum transmission power transmission signal, the first signal to noise ratio that the first UE is detected；Second signal to noise ratio is：When the first community is using actual emission power transmission signal, the second signal to noise ratio that the first UE is detected；The serving cell of first UE is second community, and the second community is the adjacent cell of the first community；
When the difference of first signal to noise ratio and second signal to noise ratio is more than default first thresholding, the UE interfered with when the first UE uses default maximum transmission power transmission signal for the first community is determined.
With reference to second aspect, in the third possible implementation, the second unit is additionally operable to：It is determined that after at least one described UE, it is determined that the sum of the cell where at least one described UE.
With reference to second aspect, or with reference to the first possible implementation of second aspect, or second of possible implementation of second aspect is combined, or with reference to the third possible implementation of second aspect, in the 4th kind of possible implementation, Unit the 4th specifically for：
If the quantity is more than default second thresholding, the COMP cooperation modes for being the UE selections are dynamic cooperative scheduling DCS modes.
With reference to second aspect, or with reference to the first possible implementation of second aspect, or second of possible implementation of second aspect is combined, or with reference to the third possible implementation of second aspect, in the 5th kind of possible implementation, Unit the 4th specifically for：
It is that the COMP cooperation modes of the UE selections are following any if the quantity is less than or equal to default second thresholding：Joint transmission JT cooperation modes, dynamic cooperative scheduling DCS cooperation modes and cooperative beam CBF cooperation modes.
With reference to the 5th kind of possible implementation of second aspect, in the 6th kind of possible implementation, if the quantity be less than or equal to default second thresholding, Unit the 4th specifically for：It is that the UE selects COMP cooperation modes according to the load of the first community. With reference to the 6th kind of possible implementation of second aspect, in the 7th kind of possible implementation, Unit the 4th specifically for：
When the load of the first community is more than default three thresholding, the COMP cooperation modes for being the UE selections are CBF cooperation modes.
With reference to the 6th kind of possible implementation of second aspect, in the 8th kind of possible implementation, Unit the 4th specifically for：
It is that the COMP cooperation modes of the UE selections are following any when the load of the first community is less than or equal to default three thresholding：JT cooperation modes and DCS cooperation modes.
With reference to the 8th kind of possible implementation of second aspect, in the 9th kind of possible implementation, when the first community load be less than or equal to default three thresholding when, Unit the 4th specifically for：It is that the UE selects COMP cooperation modes according to the Signal to Interference plus Noise Ratio of the UE SRS signals received in told first community.
With reference to the 9th kind of possible implementation of second aspect, in the tenth kind of possible implementation, Unit the 4th specifically for：
When the Signal to Interference plus Noise Ratio of the SRS signal of the UE is more than default four thresholding, the COMP cooperation modes for being the UE selections are JT cooperation modes.
With reference to the tenth kind of possible implementation of second aspect, in a kind of the tenth possible implementation, Unit the 4th specifically for：
When the Signal to Interference plus Noise Ratio of the SRS signal of the UE is less than or equal to default four thresholding, the COMP cooperation modes for being the UE selections are DCS cooperation modes.
The third aspect, a kind of communication system provided in an embodiment of the present invention, including any of the above-described described device.
In above-mentioned technical proposal, so as to solve when collaboration set selection and cooperation mode selection in COMP interference coordination algorithms, whole network users are experienced with the problem of shortage is considered, the throughput performance income of COMP technologies is improved, the purpose of effective lifting performance of the entire network has been reached. Brief description of the drawings
Fig. 1 is a kind of downlink interference collaboration method schematic flow sheet provided in an embodiment of the present invention；Fig. 2 is the structural representation of the first downlink interference collaboration device provided in an embodiment of the present invention；Fig. 3 is the structural representation of second of downlink interference collaboration device provided in an embodiment of the present invention.Embodiment
In current COMP technologies, the selection of collaboration set and cooperation mode is mainly selected from the impression of serving cell users, not in view of the impression of whole net other users, also just can not necessarily reach the purpose of lifting performance of the entire network.Therefore, technical scheme provided in an embodiment of the present invention, solves the selection of collaboration set and cooperation mode in interference coordination algorithm, so as to reach the purpose that performance of the entire network is lifted by interference coordination.
Referring specifically to Fig. 1, a kind of downlink interference collaboration method provided in an embodiment of the present invention, including：Step 101:Base station determines that the actual emission power of first community is less than or equal to default maximum transmission power.
4 Jia set a cluster by M cell（Cell) constitute, M cell carries out the adjustment of power grade, wherein, M is the integer more than or equal to 1, when selecting optimal power level, under each candidate power grade, to each resource block group（Resource Block Group, RBG) virtual scheduling is carried out, the quality of the power grade is judged according to virtual scheduling result.Wherein, virtual scheduling process is the hypothesis transmission power according to each Cell in cluster, all Cell utility function is calculated respectively and the transmission power of maximum utility function and corresponding each cell is power used in follow-up actual schedule, i.e. actual emission power.
Wherein, on power grade p, the utility function on k-th of RBG of m-th of cell is defined as formula（1), the formula can be described as PF criterions：
Utmtym k p = max(PF p) n e N ( 1 )Wherein, it is the equitable proportion factor of nth user, N is number of users.
Utility function and it is： M K
Up =∑∑ tility^p
m=\ k=\ ( 2 )
Wherein, K represents total RB numbers.
When reaching the cycle of cooperative scheduling and Power Control, each cell is calculated according to above-mentioned formula, maximum utility function and corresponding power grade are the power grade of needs.
Step 102:Base station determines the cell where at least one UE and at least one described UE, and at least one described UE is that the first community uses the UE interfered with during default maximum transmission power transmission signal.Wherein described first community is not launched with default maximum transmission power, and is reduction of the cell of transmission power.
For example, described first community is cell G, the user equipment for the adjacent cell that first community may interfere with when default maximum transmission power is launched is user equipmentUJ, corresponding adjacent cell is cell ^, then by the G severe jammingsCU U] there are following characteristics：In any Transmission Time Interval（ Transmission
Time Interval, TTI) in,C' use actual power（I.e. power, that is, drop in the power lower than default maximum transmission power）^ ^ ^ signal to noise ratio during transmission signal, ^ during with using default maximum transmission power transmission signalU] meeting there is difference.
UE signal to noise ratio, is referred to as UE Signal to Interference plus Noise Ratio, i.e.,：The desired signal that UE is received, with the UE be subject to interference plus equipment bottom make an uproar it is obtaining and ratio.
Thus, it is supposed thatC' using default maximum transmission power transmission signal whenCU ^ signal to noise ratio be hide G ^ ^ when using actual power transmission signal signal to noise ratio then to there is Bilej Pi- Bilej P full〉7¾ ;Wherein, 7 default first thresholding is represented, first thresholding can be default value or the Configuration Values for inputting the equipment.The value unit of first thresholding can be dB, and such as value can be any value between 3dB, or 5dB, or 3dB ~ 5dB.
Wherein, the calculating of ^ ^ signal to noise ratio can be adopted with the following method：
Be the channel fading factor from ^ cell transmissions point to ^ for ^ transmission powers, ^ is cell G transmission powers, be the channel fading factor from G launch point to ^, A is cell transmission power, is from cell transmission point to U] the channel fading factor,2Made an uproar for UE receivers bottom.
To sum up, all cells power pattern determine after, using each cell as first community carry out drop power and default maximum transmission power transmitting it is assumed that and for each cell perform according to above-mentioned formula
(1) calculating of-(3), so that the user equipment of the adjacent cell of each cell is selected, for example, determining a cell（Such as first community）The user equipment of adjacent cell include：When calculating the user equipment of G adjacent cell G respectively using actual power and maximum transmission power transmission signalcU ^ signal to noise ratio, the difference of the two signal to noise ratio is compared with thresholding 7；If the difference is more than thresholding 7, it is determined that the user equipment of the adjacent cell receives the interference of first community, that is, it is the cell disturbed by the first community to determine the adjacent cell.
Step 103:It is coordinate multipoint COMP user by the attribute modification of at least one UE, and the first community is added to the COMP collaboration sets of the UE.
Determined and be disturbed after UE according to step 102, this UE can be used as COMP user, with COMP user properties, participate in follow-up cell scheduling process, its corresponding first community can be used as its COMP collaboration set.
Step 104:Base station quantification, and be that the UE selects COMP cooperation modes, the sum of cell of the quantity for described in where at least one UE according to the quantity.
After the adjacent cell being disturbed calculated according to step 102, the adjacent cell number that statistics first community is interfered with obtains the cell number that first community may interfere with.COMP cooperation modes adaptive can be should determine that according to the cell number interfered with, it is that first community uses the UE selection dynamic cooperative scheduling interfered with during default maximum transmission power transmission signal when the adjacent cell number interfered with is more than default second thresholding n（Dynamic Coordinated Scheduling, DCS) mode, i.e. the first ' area does not signal as zero energy cell, otherwise when the adjacent cell number interfered with is not more than default second thresholding n, Interfered with when using default maximum transmission power transmission signal for first community UE selection COMP cooperation modes for JT, DCS or CBF cooperation mode.Wherein, the second thresholding n can be default value or the Configuration Values for inputting the equipment.For example, the value of second thresholding can be 2 or 3.
Alternatively, it is cooperation mode that first community uses the COMP cooperation modes that the UE that is interfered with during default maximum transmission power transmission signal is selected for JT, DCS or CBF, including：It is that the UE selects COMP cooperation modes according to the load of the first community.
For example, be that the UE selects COMP cooperation modes according to the load of the first community, including：When the load of the first community is more than default three thresholding, base station is that first community uses the COMP cooperation modes that the UE interfered with during default maximum transmission power transmission signal is selected for CBF cooperation modes；Or, when the load of the first community is less than or equal to default three thresholding, base station is that first community uses the COMP cooperation modes that the UE interfered with during default maximum transmission power transmission signal is selected for JT cooperation modes or DCS cooperation modes.Wherein, the 3rd thresholding can be default value or the Configuration Values for inputting the equipment.The value of 3rd thresholding can account for the ratio of the total resources of the equipment for load（That is resource utilization）, for example, resource utilization is 30% corresponding load.
Alternatively, when the load of the first community is less than or equal to default three thresholding, the UE that base station is interfered with when using default maximum transmission power transmission signal according to the first community is telling the Signal to Interference plus Noise Ratio for the SRS signal that the first ' J, area are received for UE selection COMP cooperation modes.
For example, the Signal to Interference plus Noise Ratio for the SRS signal that the UE that base station is interfered with when using default maximum transmission power transmission signal according to the first community is received in told first community selects COMP cooperation modes for the UE, including：When the Signal to Interference plus Noise Ratio of the SRS signal of the UE is more than default four thresholding, the base station is that the COMP cooperation modes of UE selections are JT cooperation modes, wherein, the 4th thresholding can be default value or the Configuration Values for inputting the equipment.The value unit of 4th thresholding can be dB, for example, value is OdB;Or, when the Signal to Interference plus Noise Ratio of the SRS signal of the UE is less than or equal to default four thresholding, the base station is that the COMP cooperation modes of UE selections are DCS cooperation modes.
With the above method accordingly, referring to Fig. 2, a kind of downlink interference collaboration device provided in an embodiment of the present invention, the device can be used for perform above-described embodiment provide method.For example, the device includes：First module 201, for determining that the actual emission power of first community is less than or equal to default maximum Transmission power；
Second unit 202, for determining the cell where at least one user equipment (UE) and at least one described UE, at least one described UE is that the first community uses the UE interfered with during default maximum transmission power transmission signal;
Third unit 203, for being coordinate multipoint COMP user by the attribute modification of at least one UE, and the first community is added the COMP collaboration sets of the UE；
4th unit 204, is that the UE selects COMP cooperation modes, the sum of cell of the quantity for described in where at least one UE for quantification, and according to the quantity.
Alternatively, the first module is it is determined that the actual emission power of first community is additionally operable to less than or equal to before default maximum transmission power：Determine the actual emission power of the first community.
Alternatively, the second unit is determined as follows at least one described UE:
Determine the first signal to noise ratio and the second signal to noise ratio；Wherein, first signal to noise ratio is：When the first community uses default maximum transmission power transmission signal, the first signal to noise ratio that the first UE is detected；Second signal to noise ratio is：When the first community is using actual emission power transmission signal, the second signal to noise ratio that the first UE is detected；The serving cell of first UE is second community, and the second community is the adjacent cell of the first community；
When the difference of first signal to noise ratio and second signal to noise ratio is more than default first thresholding, the UE interfered with when the first UE uses default maximum transmission power transmission signal for the first community is determined.
Alternatively, the sum of cell of the second unit where at least one described UE it is determined that after at least one described UE, is further determined that.
Alternatively, when Unit the 4th is that the UE selects COMP cooperation modes according to the quantity, specifically for：If the quantity is more than default second thresholding, the COMP cooperation modes for being the UE selections are dynamic cooperative scheduling DCS modes.
Alternatively, when Unit the 4th is that the UE selects COMP cooperation modes according to the quantity, specifically for：It is that the COMP cooperation modes of the UE selections are following any if the quantity is less than or equal to default second thresholding：Joint transmission JT cooperation modes, dynamic cooperative scheduling DCS cooperation parts Formula and cooperative beam CBF cooperation modes.
Alternatively, if the quantity is less than or equal to default second thresholding, Unit the 4th is that the UE selects COMP cooperation modes according to the load of the first community.
Alternatively, when Unit the 4th is that the UE selects COMP cooperation modes according to the load of the first community, specifically for：When the load of the first community is more than default three thresholding, the COMP cooperation modes for being the UE selections are CBF cooperation modes.
Alternatively, when Unit the 4th is that the UE selects COMP cooperation modes according to the load of the first community, specifically for：It is that the COMP cooperation modes of the UE selections are following any when the load of the first community is less than or equal to default three thresholding：JT cooperation modes and DCS cooperation modes.
Alternatively, when the load of the first community is less than or equal to default three thresholding, Unit the 4th is that the UE selects COMP cooperation modes according to the Signal to Interference plus Noise Ratio of the UE SRS signals received in told first community.
Alternatively, Unit the 4th according to the UE the SRS signal intensity that told first community is received be the UE select COMP cooperation modes when, specifically for：When the Signal to Interference plus Noise Ratio of the SRS signal of the UE is more than default four thresholding, the COMP cooperation modes for being the UE selections are JT cooperation modes.
Alternatively, Unit the 4th according to the UE the SRS signal intensity that told first community is received be the UE select COMP cooperation modes when, specifically for：When the Signal to Interference plus Noise Ratio of the SRS signal of the UE is less than or equal to default four thresholding, the COMP cooperation modes for being the UE selections are DCS cooperation modes.
With the above method accordingly, referring to Fig. 3, the embodiment of the present invention provides another downlink interference collaboration device, and the device can be used for performing the method that above-described embodiment is provided.For example, the device includes：Processor 301, for performing above method flow by the computer program being pre-configured with, realizes following function：Determine that the actual emission power of first community is less than or equal to default maximum transmission power；The cell where at least one user equipment (UE) and at least one described UE is determined, at least one described UE is that the first community uses the UE interfered with during default maximum transmission power transmission signal;Will it is described at least one UE attribute modification is coordinate multipoint COMP user, and will first ' the area addition UE COMP collaboration sets；Quantification, and be that the UE selects COMP cooperation modes, the sum of cell of the quantity for described in where at least one UE according to the quantity.
The device can also include：The data produced in memory 302, the above-mentioned computer program code for storing, and storage said procedure implementation procedure.
Alternatively, processor 301 determines that the actual emission power of first community is less than or equal to before default maximum transmission power, in addition to：The base station determines the actual emission power of the first community.
Alternatively, processor 301 is determined as follows at least one described UE:
Processor 301 determines the first signal to noise ratio and the second signal to noise ratio；Wherein, first signal to noise ratio is：When the first community uses default maximum transmission power transmission signal, the first signal to noise ratio that the first UE is detected；Second signal to noise ratio is：When the first community is using actual emission power transmission signal, the second signal to noise ratio that the first UE is detected；The serving cell of first UE is second community, and the second community is the adjacent cell of the first community；
When the difference of first signal to noise ratio and second signal to noise ratio is more than default first thresholding, the base station determines dry 4 UE arrived especially when the first UE uses default maximum transmission power transmission signal for the first community.
Alternatively, after processor 301 determines at least one described UE, processor 301 determines the sum of the cell where at least one described UE.
Alternatively, processor 301 is that the UE selects COMP cooperation modes according to the quantity, including：If the quantity is more than default second thresholding, processor 301 is that the COMP cooperation modes of the UE selections are dynamic cooperative scheduling DCS modes.
Alternatively, processor 301 is that the UE selects COMP cooperation modes according to the quantity, including：If the quantity is less than or equal to default second thresholding, processor 301 is that the COMP cooperation modes of the UE selections are following any：Joint transmission JT cooperation modes, dynamic cooperative scheduling DCS cooperation modes and cooperative beam CBF cooperation modes.
Alternatively, if the quantity is less than or equal to the second thresholding, processor 301 is that the UE selects COMP cooperation modes according to the load of the first community. Alternatively, processor 301 is that the UE selects COMP cooperation modes according to the load of the first community, including：When the load of the first community is more than default three thresholding, processor 301 is that the COMP cooperation modes of the UE selections are CBF cooperation modes.
Alternatively, processor 301 is that the UE selects COMP cooperation modes according to the load of the first community, including：When the load of the first community is less than or equal to default three thresholding, processor 301 is that the COMP cooperation modes of the UE selections are following any：JT cooperation modes and DCS cooperation modes.
Alternatively, when the load of the first community is less than or equal to default three thresholding, processor 301 is that the UE selects COMP cooperation modes according to the Signal to Interference plus Noise Ratio of the UE SRS signals received in told first community.
Alternatively, processor 301 is that the UE selects COMP cooperation modes according to the Signal to Interference plus Noise Ratio of the UE SRS signals received in told first community, including：When the Signal to Interference plus Noise Ratio of the SRS signal of the UE is more than default four thresholding, processor 301 is that the COMP cooperation modes of the UE selections are JT cooperation modes.
Alternatively, processor 301 is that the UE selects COMP cooperation modes according to the Signal to Interference plus Noise Ratio of the UE SRS signals received in told first community, including：When the Signal to Interference plus Noise Ratio of the SRS signal of the UE is less than or equal to default four thresholding, processor 301 is that the COMP cooperation modes of the UE selections are DCS cooperation modes.
Various embodiments of the present invention can be combined with each other, also, suitable for LTE system.
A kind of communication system that the embodiment of the present invention is also provided, including any device described in the embodiments of the present invention.
In summary, the disturbance coordination method that the embodiment of the present invention is combined CSPC with COMP, when solving collaboration set selection and cooperation mode selection in COMP, the problem of shortage is considered is experienced to whole network users, it is favorably improved the throughput performance income of COMP technologies, wherein, the selection of COMP cooperation cells is carried out by combined dispatching and Power Control (CSPC), the low-power resource of CSPC optimizations is regard as COMP cooperation cell；The cell number that may interfere with according to drop power resource cell, carries out the selection of COMP cooperation modes；In CSPC calculating process, the power of reduction and SINR differences under default maximum transmission power Larger user is used as COMP user candidate.
It should be understood by those skilled in the art that, embodiments of the invention can be provided as method, system or computer program product.Therefore, the form of the embodiment in terms of the present invention can use complete hardware embodiment, complete software embodiment or combine software and hardware.Moreover, the present invention can be used (includes but is not limited to magnetic disk storage, CD-ROM, optical memory etc. in one or more computer-usable storage mediums for wherein including computer usable program code）The form of the computer program product of upper implementation.
The present invention is with reference to method according to embodiments of the present invention, device（System）And the flow chart and/or block diagram of computer program product are described.It should be understood that can by the flow in each flow and/or square frame and flow chart and/or block diagram in computer program instructions implementation process figure and/or block diagram and/or square frame combination.These computer program instructions can be provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing units to produce a machine so that produce the device for being used for realizing the function of specifying in one flow of flow chart or multiple flows and/or one square frame of block diagram or multiple square frames by the instruction of the computing device of computer or other programmable data processing units.
These computer program instructions may be alternatively stored in the computer-readable memory that computer or other programmable data processing units can be guided to work in a specific way, so that the instruction being stored in the computer-readable memory, which is produced, includes the manufacture of command device, the command device realizes the function of being specified in one flow of flow chart or multiple flows and/or one square frame of block diagram or multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing units, so that series of operation steps is performed on the computer or other programmable apparatus to produce computer implemented processing, so that the instruction performed on the computer or other programmable apparatus provides the step of being used to realize the function of specifying in one flow of flow chart or multiple flows and/or one square frame of block diagram or multiple square frames.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creative concept, then other change and modification can be made to these embodiments.So, appended claims are intended to be construed to include preferred embodiment and fall into having altered and changing for the scope of the invention. Depart from the spirit and scope of the embodiment of the present invention.So, if these modifications and variations of the embodiment of the present invention belong within the scope of the claims in the present invention and its equivalent technologies, then the present invention is also intended to comprising including these changes and modification.

Claims (1)

  1. Claim
    1st, a kind of downlink interference collaboration method, it is characterised in that methods described includes：
    Base station determines that the actual emission power of first community is less than or equal to default maximum transmission power；The base station determines the cell where at least one user equipment (UE) and at least one described UE, and at least one described UE is that the first community uses the UE interfered with during default maximum transmission power transmission signal;
    The attribute modification of at least one UE is coordinate multipoint COMP user by the base station, and will first ' the area addition UE COMP collaboration sets；
    The base station quantification, and be that the UE selects COMP cooperation modes, the sum of cell of the quantity for described in where at least one UE according to the quantity.
    2nd, according to the method described in claim 1, it is characterised in that the base station determine first community actual emission power be less than or equal to default maximum transmission power before, in addition to：The base station determines the actual emission power of the first community.
    3rd, method according to claim 1 or 2, it is characterised in that the base station is determined as follows at least one described UE:
    The base station determines the first signal to noise ratio and the second signal to noise ratio；Wherein, first signal to noise ratio is：When the first community uses default maximum transmission power transmission signal, the first signal to noise ratio that the first UE is detected；Second signal to noise ratio is：When the first community is using actual emission power transmission signal, the second signal to noise ratio that the first UE is detected；The serving cell of first UE is second community, and the second community is the adjacent cell of the first community；
    When the difference of first signal to noise ratio and second signal to noise ratio is more than default first thresholding, the base station determines dry 4 UE arrived especially when the first UE uses default maximum transmission power transmission signal for the first community.
    4th, according to the method described in claim 1, it is characterised in that after at least one UE described in being determined in the base station, the sum of the cell where described at least one described UE of base station determination.
    5th, the method according to any one of Claims 1-4, it is characterised in that the base station according to The quantity is that the UE selects COMP cooperation modes, including：
    If the quantity is more than default second thresholding, the base station is that the COMP cooperation modes of the UE selections are dynamic cooperative scheduling DCS modes.
    6th, the method according to any one of Claims 1-4, it is characterised in that the base station is that the UE selects COMP cooperation modes according to the quantity, including：
    If the quantity is less than or equal to default second thresholding, the base station is that the COMP cooperation modes of the UE selections are following any：Joint transmission JT cooperation modes, dynamic cooperative scheduling DCS cooperation modes and cooperative beam CBF cooperation modes.
    7th, method according to claim 6, it is characterised in that if the quantity is less than or equal to the second thresholding, the base station is that the UE selects COMP cooperation modes according to the load of the first community.
    8th, method according to claim 7, it is characterised in that the base station is that the UE selects COMP cooperation modes according to the load of the first community, including：
    When the load of the first community is more than default three thresholding, the base station is that the COMP cooperation modes of the UE selections are CBF cooperation modes.
    9th, method according to claim 7, it is characterised in that the base station is that the UE selects COMP cooperation modes according to the load of the first community, including：
    When the load of the first community is less than or equal to default three thresholding, the base station is that the COMP cooperation modes of the UE selections are following any：JT cooperation modes and DCS cooperation modes.
    10th, method according to claim 9, it is characterized in that, when the load of the first community is less than or equal to default three thresholding, the base station is that the UE selects COMP cooperation modes according to the Signal to Interference plus Noise Ratio of the UE SRS signals received in told first community.
    11st, method according to claim 10, it is characterised in that the base station is that the UE selects COMP cooperation modes according to the Signal to Interference plus Noise Ratio of the UE SRS signals received in told first community, including：
    When the Signal to Interference plus Noise Ratio of the SRS signal of the UE is more than default four thresholding, the base station is that the COMP cooperation modes of the UE selections are JT cooperation modes.
    12nd, method according to claim 10, it is characterised in that the base station is according to the UE The Signal to Interference plus Noise Ratio of the SRS signal received in told first community selects COMP cooperation modes for the UE, including：
    When the Signal to Interference plus Noise Ratio of the SRS signal of the UE is less than or equal to default four thresholding, the base station is that the COMP cooperation modes of the UE selections are DCS cooperation modes.
    13rd, a kind of downlink interference collaboration device, it is characterised in that the device includes：
    First module, for determining that the actual emission power of first community is less than or equal to default maximum transmission power；
    Second unit, for determining the cell where at least one user equipment (UE) and at least one described UE, at least one described UE is that the first community uses the UE interfered with during default maximum transmission power transmission signal;
    Third unit, for being coordinate multipoint COMP user by the attribute modification of at least one UE, and the first community is added the COMP collaboration sets of the UE；
    Unit the 4th, is that the UE selects COMP cooperation modes, the sum of cell of the quantity for described in where at least one UE for quantification, and according to the quantity.
    14th, device according to claim 13, it is characterised in that the first module is it is determined that the actual emission power of first community is additionally operable to less than or equal to before default maximum transmission power：Determine the actual emission power of the first community.
    15th, the device according to claim 13 or 14, it is characterised in that the second unit is determined as follows at least one described UE:
    Determine the first signal to noise ratio and the second signal to noise ratio；Wherein, first signal to noise ratio is：When the first community uses default maximum transmission power transmission signal, the first signal to noise ratio that the first UE is detected；Second signal to noise ratio is：When the first community is using actual emission power transmission signal, the second signal to noise ratio that the first UE is detected；The serving cell of first UE is second community, and the second community is the adjacent cell of the first community；
    When the difference of first signal to noise ratio and second signal to noise ratio is more than default first thresholding, the UE interfered with when the first UE uses default maximum transmission power transmission signal for the first community is determined. 16th, device according to claim 13, it is characterised in that the second unit is additionally operable to：It is determined that after at least one described UE, it is determined that the sum of the cell where at least one described UE.
    17th, the device according to claim any one of 13-16, it is characterised in that Unit the 4th specifically for：
    If the quantity is more than default second thresholding, the COMP cooperation modes for being the UE selections are dynamic cooperative scheduling DCS modes.
    18th, the device according to claim any one of 13-16, it is characterised in that Unit the 4th specifically for：
    It is that the COMP cooperation modes of the UE selections are following any if the quantity is less than or equal to default second thresholding：Joint transmission JT cooperation modes, dynamic cooperative scheduling DCS cooperation modes and cooperative beam CBF cooperation modes.
    19th, device according to claim 18, it is characterised in that if the quantity be less than or equal to default second thresholding, Unit the 4th specifically for：It is that the UE selects COMP cooperation modes according to the load of the first community.
    20th, device according to claim 19, it is characterised in that Unit the 4th specifically for：When the load of the first community is more than default three thresholding, the COMP cooperation modes for being the UE selections are CBF cooperation modes.
    21st, device according to claim 19, it is characterised in that Unit the 4th specifically for：It is what the UE was selected when the load of the first community is less than or equal to default three thresholding
    COMP cooperation modes are following any：JT cooperation modes and DCS cooperation modes.
    22nd, device according to claim 21, it is characterised in that when the first community load be less than or equal to default three thresholding when, Unit the 4th specifically for：It is that the UE selects COMP cooperation modes according to the Signal to Interference plus Noise Ratio of the UE SRS signals received in told first community.
    23rd, device according to claim 22, it is characterised in that Unit the 4th specifically for：When the Signal to Interference plus Noise Ratio of the SRS signal of the UE is more than default four thresholding, the COMP cooperation modes for being the UE selections are JT cooperation modes.
    24th, device according to claim 23, it is characterised in that Unit the 4th specifically for： When the Signal to Interference plus Noise Ratio of the SRS signal of the UE is less than or equal to default four thresholding, the COMP cooperation modes for being the UE selections are DCS cooperation modes.
    25th, a kind of communication system, including the device according to claim any one of 13-24.
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CN101754383A (en) * 2010-02-02 2010-06-23 中国科学院计算技术研究所 Structuring method of CoMP cell cluster
CN103281770A (en) * 2013-06-27 2013-09-04 电子科技大学 Method for achieving collaborative multipoint transmission dispatch and power distribution
WO2013183029A1 (en) * 2012-06-07 2013-12-12 Telefonaktiebolaget L M Ericsson (Publ) Network-centric link adaptation for coordinated multipoint downlink transmission

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
CN101754383A (en) * 2010-02-02 2010-06-23 中国科学院计算技术研究所 Structuring method of CoMP cell cluster
WO2013183029A1 (en) * 2012-06-07 2013-12-12 Telefonaktiebolaget L M Ericsson (Publ) Network-centric link adaptation for coordinated multipoint downlink transmission
CN103281770A (en) * 2013-06-27 2013-09-04 电子科技大学 Method for achieving collaborative multipoint transmission dispatch and power distribution

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