WO2013149593A1 - 干扰协调的方法和装置 - Google Patents
干扰协调的方法和装置 Download PDFInfo
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- WO2013149593A1 WO2013149593A1 PCT/CN2013/073741 CN2013073741W WO2013149593A1 WO 2013149593 A1 WO2013149593 A1 WO 2013149593A1 CN 2013073741 W CN2013073741 W CN 2013073741W WO 2013149593 A1 WO2013149593 A1 WO 2013149593A1
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- 238000000034 method Methods 0.000 title claims abstract description 67
- 230000002452 interceptive effect Effects 0.000 claims abstract description 54
- 239000011159 matrix material Substances 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 4
- 210000004027 cell Anatomy 0.000 description 329
- 229920006934 PMI Polymers 0.000 description 85
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 12
- 238000004891 communication Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 10
- 230000007246 mechanism Effects 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 210000004128 D cell Anatomy 0.000 description 2
- 210000003850 cellular structure Anatomy 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 210000003771 C cell Anatomy 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- -1 cell D cell A Chemical compound 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/022—Site diversity; Macro-diversity
- H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0636—Feedback format
- H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
Definitions
- Smart antenna technology can make full use of the spatial characteristics of wireless resources, improve the utilization of wireless resources by wireless mobile communication systems, and fundamentally improve system capacity.
- beamforming plays a huge role in eliminating inter-cell interference and improving the performance of cell edge users.
- the best/worst companion precoding matrix indicator requires the UE (User Equipment) to report the best/worst precoding matrix indicator of the local area and the neighboring area (PMI, Precoding Matrix Indicator). ).
- the UE needs to perform the cell search in the neighboring area first, and then the PMI of the neighboring area can be learned and reported to the serving base station to which the cell belongs. .
- frequent reporting by the UE to the PMI of the neighboring area greatly increases the overhead of the uplink.
- Embodiments of the present invention provide a method and apparatus for interference coordination, which can perform interference coordination without increasing uplink overhead.
- a method for interference coordination including: determining, according to the first interference information and the second interference information, a beam of a cell of a first base station and a cell of a second base station that interfere with each other, where the first interference information includes the first a set of cells, where the first cell set is composed of a first interfering cell to which an interference beam of a beam of a cell of the first base station belongs, the second interference information includes a second cell set, and the second cell set is interfered by a beam of a cell of the second base station
- the second interfering cell to which the beam belongs is configured to coordinate time-frequency resources, time-domain resources, or frequency-domain resources occupied by the cells of the first base station and the cells of the second base station that interfere with each other to reduce interference.
- an apparatus for interference coordination including: a determining unit and an interference coordination unit, wherein the determining unit is configured to determine a cell of the first base station and a cell of the second base station based on the first interference information and the second interference information a mutually interfered beam, where the first interference information includes a first cell set, the first cell set is composed of a first interfering cell to which an interference beam of a beam of a cell of the first base station belongs, and the second interference information includes a second cell set, The second cell set is composed of a second interfering cell to which the interference beam of the beam of the cell of the second base station belongs; the interference coordinating unit is configured to coordinate the use of the beam transmitted by the cell of the first base station and the cell of the second base station determined by the determining unit to interfere with each other. Time-frequency resources, time-domain resources or frequency-domain resources to reduce interference.
- the base station may be an evolved base station (eNB or e-NodeB, evolved Node B) in LTE or LTE-A, including a macro base station or a micro base station.
- eNB evolved base station
- e-NodeB evolved Node B
- LTE or LTE-A including a macro base station or a micro base station.
- LTE-A CoMP also includes other beamforming-based neighboring interference coordination mechanisms, such as coordinated beamforming and Coordinated Beam Switching (CBs).
- CBs Coordinated Beam Switching
- the above methods have their own disadvantages.
- the coordinated beamforming mechanism requires the UE to report the spatial covariance matrix of the region, the UE needs to first perform cell search in the neighboring cell, and then the spatial covariance matrix of the neighboring cell can be known after synchronization. Reported to the base station to which the serving cell belongs. However, if the UE frequently reports the spatial covariance of the neighboring area, the overhead of the uplink will be greatly increased.
- the cooperative beam switching mechanism requires the base station to inform the UE to initiate the coordinated beam switching mechanism through the air interface. At the same time, the UE is required to report the best CQI and the corresponding time-frequency position in the beam switching period, which also greatly increases the uplink overhead.
- the embodiment of the invention provides a method and a device for implementing beam interference coordination between cells of a base station without increasing uplink overhead.
- FIG. 1 is a schematic diagram of an application scenario according to an embodiment of the present invention.
- FIG. 1 schematically includes: 3 cells 11, 12, and 13 controlled by different base stations, and each cell includes 4 beams labeled 1, 3, 0, and 2.
- the multiple beams of the cell of the base station are beamformed based on different PMIs, and each beam has a corresponding relationship with a specific PMI.
- the embodiment of the present invention can provide a method for interference coordination.
- the coordination, the subframe of the cell of the base station is staggered and transmitted on the time-frequency resource, the time domain resource, or the frequency domain resource, and the base station can be reduced without increasing the uplink overhead.
- Mutual interference between beams of a cell can be reduced without increasing the uplink overhead.
- Method 20 is a schematic flow chart of a method 20 of interference coordination according to an embodiment of the present invention.
- Method 20 can be performed by different network side devices, such as base stations or core network elements, in a wireless communication system.
- the embodiment of the present invention can provide a method for interference coordination.
- the coordination, the subframe of the cell of the base station is staggered and transmitted on the time-frequency resource, the time domain resource, or the frequency domain resource, and the base station can be reduced without increasing the uplink overhead.
- Mutual interference between beams of a cell can be reduced without increasing the uplink overhead.
- FIG. 3 is a schematic flow diagram of a method 30 of interference coordination in accordance with another embodiment of the present invention.
- the process by which the base station in the wireless communication system specifically performs the method 20 is illustrated. 31.
- the first base station receives information reported by the UE in the cell.
- the information reported by the UE in the cell to the serving base station may be information that the UE sends to reflect the channel quality or status, including, for example, PMI and RSRP (Reference Signal Receiving Power) and CQI.
- the information reported by the UE here may be the same as the information reported before the interference coordination in the prior art.
- the reported CQI is smaller than a specific threshold, and the UE reporting the same PMI is divided into one.
- the first base station counts the RSRPs reported by the UEs in the same group in the same group, and the neighboring cells to which the RSRPs reported by the UEs in the same group belong are sorted according to the statistical RSRP.
- the same group refers to the UE group that reports the same PMI.
- the RSRP reported by the UE may be processed by the RSRP reported by the UE.
- the processed RSRP may be regarded as an indication of the interference strength of the signal carried by the beam of the cell to the beam carried by the cell.
- the method for processing the RSRP may be various, including summing, averaging, or finding the minimum variance, which is not limited by the embodiment of the present invention. For convenience of description, the following descriptions are averaged and sorted from large to small, but the present invention also applies other methods of processing and sorting.
- the RSRPs of the same neighboring cell reported by the UEs in the same group are averaged, and the average RSRP value is used as the RSRP of the same neighboring cell, and all neighboring cells are sorted from large to small.
- the sorting order of the neighboring cells corresponds to the order in which the interference of the beams of the first base station is strong to weak.
- the signal carried by the beam of the neighboring neighboring cell has stronger interference with the signal carried by the beam of the local cell.
- the first base station receives information reported by the UE in the cell.
- the RSRPs of the same neighbor cell number are averaged to obtain the average interference size of the beam of the neighboring cell to the corresponding PMI of the cell.
- the RSRPs of the cell 1, cell 2, and cell 3 reported by the UE are averaged to obtain three average RSRPs.
- the sorting of the corresponding neighboring cells is obtained by sorting the averaged RSRP from large to small, for example, the sorting order is neighboring cell 3, neighboring cell 1 and neighboring cell 2.
- the carried signal has a large interference to the signal carried by the corresponding PMI of the cell.
- the channel quality information reported by the UEs in the same group may be smaller than The RSRP reported by the UE of a certain threshold is averaged.
- the information reported by the UE includes the CQI, it is considered that the CQI of the UE at the cell edge can more accurately reflect the interference of the neighboring cell, and only the RSRP reported by the UE whose CQI reported in the same group is smaller than the specific threshold is processed. Therefore, the first base station can actively reduce the UE participating in the processing, thereby improving efficiency.
- the neighbor cell number to which the RSRP is fed by the UE is correspondingly reduced, and the interference coordination accuracy can be improved when the interference is further coordinated with the base station to which the neighboring cell belongs.
- load information that is exchanged with the second base station to which the neighboring cell belongs is used as a weighting factor of the averaged RSRP to calculate a weighted average RSRP value, and the weighted average is used.
- the RSRP values sort all neighboring cells from large to small.
- the second base station can be one or more.
- the weighted average RSRP may be calculated by using the X2 protocol interface and the load information of the interaction as a weighting factor, where the X2 protocol interface is a protocol interface for communication between the base stations.
- the load information may be, for example, a Radio Resource Status in the TS36.423 protocol for standardizing inter-base station X2 interface applications.
- the load may be used as the weighting factor of the averaged RSRP.
- the first base station acquires load information of each cell from the neighboring cell 1, the neighboring cell 2, and the second base station to which the neighboring cell 3 belongs through the X2 interface, for example, represented by L1, L2, and L3, and the foregoing load information.
- the sorted neighboring cell is the first interfering cell, and the first base station generates the first interference information of the first base station based on the sorted neighboring cells obtained in the foregoing step.
- the first interference information includes a first set of cells, and the first set of cells is composed of a first interfering cell to which an interference beam of a beam of a cell of the first base station belongs.
- the first cell in the top group may be selected to form the first cell set, or the processed RSRP may be selected as the interference strength, and the cell with the interference strength greater than the threshold value constitutes the first cell set, and optionally It is also possible to select all the neighboring cells to form the first cell set after the above sorting.
- the "first" and “second” in the first base station and the second base station are only for distinguishing two base stations.
- the second base station in step 35 may perform steps similar to steps 31 to 34 performed by the first base station to generate second interference information, before sending the second interference information to the first base station, for the sake of brevity, the process is not Let me repeat.
- the first base station can serve as a central control node, and receive multiple second interference information sent by multiple second base stations.
- the first base station reduces the interference by coordinating the time domain resources occupied by the beams transmitted by the first base station and the plurality of second base stations according to the beam interference relationship between the base stations.
- first base station and the second base station do not need to be controlled by the central control node, but are used as level nodes, each of which performs the method 20 in parallel, may also include the following.
- the first base station sends first interference information to the second base station.
- steps 35 and 36 can be performed in either order or simultaneously.
- the first base station and the second base station may implement interaction of the first interference information and the second interference information.
- the first base station may receive the second interference information sent by the second base station and send the first interference information to the second base station by using an X2 protocol interface or an S1 protocol interface, where the S1 protocol interface is a protocol interface between the core network and the base station.
- Table 2 is an example of an embodiment of the present invention. Table 2
- the first base station includes a cell A, and the cell A includes four beams formed by beamforming with different PMIs, as shown in the second to fifth rows of the first column.
- the second to fifth rows of the second column of Table 2 are neighbor cells to which the interference beams corresponding to the four beams of the cell A of the first base station belong.
- the second base station includes a cell B.
- the first base station determines, according to the first interference information and the second interference information, a beam of mutual interference between the cell of the first base station and the cell of the second base station.
- the first base station and the second base station coordinate time-frequency resources, time-domain resources, or frequency-domain resources occupied by mutually interfered beam transmissions to reduce interference.
- the first base station When the first base station serves as a centrally controlled node, the first base station may coordinate the base stations in the network through the X2 or S1 protocol interface, and each base station is required to transmit the mutually interfered beams.
- the time domain resources occupied are staggered to reduce mutual interference, thereby improving the performance of the entire network.
- each of the time-frequency resources, the time-domain resource, or the frequency-domain resource occupied by the mutually interfered beams may be used. Staggered ways to coordinate interference. For example, the interference of the time-frequency resources occupied by the mutually interfered beams is taken as an example.
- the embodiment of the present invention can provide a method for interference coordination.
- the coordination, the subframe of the cell of the base station is staggered and transmitted on the time-frequency resource, the time domain resource, or the frequency domain resource, and the base station can be reduced without increasing the uplink overhead.
- Mutual interference between beams of a cell can be reduced without increasing the uplink overhead.
- the first interference information may further include an interference strength value of the first interfering cell
- the second interference information may further include an interference strength value of the second interfering cell.
- the interference intensity value may include, for example, an average interference intensity value or a maximum interference intensity value or the like.
- the first interference information and the second interference information after the beam and the second base station where the cell B is located are as shown in the example in Table 4.
- Beams The above embodiments, in relation to the embodiment of method 30, interact with the interference strength values of the interfering cells in addition to the information of the interfering cells.
- Cell B finds that the average interference strength from cell A is greater by comparing the average interference strength values from cell A and cell C. Therefore, the cell B may consider interference coordination with the interference beam of the cell A instead of the cell C, thereby improving the accuracy of interference coordination.
- the embodiment of the present invention can provide a method for interference coordination.
- the coordination, the subframe of the cell of the base station is staggered and transmitted on the time-frequency resource, the time domain resource, or the frequency domain resource, and the base station can be reduced without increasing the uplink overhead.
- Mutual interference between beams of a cell can be reduced without increasing the uplink overhead.
- the interference strength value included in the first interference information and the second interference information may be replaced by an interference strength number.
- Table 5 is an example of the correspondence between the interference strength number and the interference strength value range. For specific implementation, reference may be made to the prior art, which is not limited by the present invention. As shown in Table 5 below, when the interference intensity range falls between [-43, 42), the interactive interference strength number is 98. This method can also improve the accuracy of coordinated interference. Table 5 Average interference intensity number average interference intensity range
- the embodiment of the present invention provides a method for performing interference coordination in a manner that a neighboring cell will be staggered by a beam, and can implement a strong interference beam between the current cell and the neighboring cell in a time-frequency resource without increasing the uplink overhead.
- the transmission is staggered on the time domain resource or the frequency domain resource, thereby reducing mutual interference.
- the first interference information may further include an appearance order of the beams of the cells of the first base station.
- the order of appearance may be represented by the order of appearance of the PMIs corresponding to the respective beams.
- the beam, and correspondingly, the second interference information may further include an appearance order of the beams of the cells of the second base station.
- the order of appearance of the bundles which may be represented by the corresponding PMI appearance order, etc., is advantageous for further determining a strong interference beam of a single beam.
- the first interference information includes the first interfering cell, and the interference strength value of the first interfering cell and the appearance order of the beam of the cell of the first base station
- the second interference information includes the second interference cell, and the interference strength value of the second interference cell and the appearance order of the beam of the cell of the second base station; or the first interference information includes the first interference cell, and the first interference
- the interference strength number of the cell and the appearance order of the beam of the cell of the first base station, and the second interference information includes the second interference cell, and the interference strength number of the second interference cell and the appearance order of the beam of the cell of the second base station .
- FIG. 4 is a schematic flow diagram of a method 40 of interference coordination in accordance with another embodiment of the present invention.
- a core network element in a wireless communication system such as an MME (Mobility Management Entity)
- MME Mobility Management Entity
- the core network element obtains the first interference information and the second interference information by using the S1 protocol interface, where the first interference information is generated by the first base station, and the second interference information is generated by the second base station.
- the core network element can obtain interference information from multiple base stations through the S1 protocol interface.
- the first interference information and the second interference information are respectively from two different base stations, and the content included may be as described in the above embodiments.
- the first interference information may include a first cell set, or an interference strength value of the first cell set and the first interfering cell, or an interference strength number of the first cell set and the first interfering cell, or the first cell set and the first cell set The order of appearance of the beams of the cells of the base station, or the interference strength values of the first cell set and the first interfering cell, and the order of occurrence of the beams of the cells of the first base station, or the interference strength coding of the first cell set and the first interfering cell and The order of appearance of the beams of the cells of the first base station.
- the second interference information is similar to the first interference information, including the corresponding content.
- the core network element determines, according to the first interference information and the second interference information, a beam that interferes with a cell of the first base station and a cell of the second base station.
- step 42 is similar to or the same as the method performed by the first base station in the method 30, and is not described here.
- the core network element determines the time domain resource occupied by the first base station and the second base station, the coordinated first base station and the first base station and the second base station or the first base station and the second base station The time domain resources occupied by the two base stations transmitting mutually interfered beams.
- the first base station or the second base station or the first base station or the second base station simultaneously transmits the beam of the cell on the coordinated time domain resource.
- the embodiment of the present invention can provide a method for interference coordination.
- the coordination, the beam of the cell of the base station is sent to the time domain resource, and the interference between the beams of the cell of the base station can be reduced without increasing the uplink overhead. .
- FIG. 5 is a schematic block diagram of an apparatus 50 for interference coordination in accordance with an embodiment of the present invention.
- the apparatus 50 may be a network side device in a wireless communication system, such as a base station or a core network element, including a determining unit 51 and an interference coordination unit 52.
- the determining unit 51 determines the cell of the first base station based on the first interference information and the second interference information.
- a beam that interferes with a cell of the second base station where the first interference information includes a first cell set, and the first cell set is composed of a first interference cell to which an interference beam of a beam of a cell of the first base station belongs
- the second interference information includes a second cell set, where the second cell set is composed of a second interference cell to which an interference beam of a beam of a cell of the second base station belongs.
- the interference coordination unit 52 coordinates time-frequency resources, time-domain resources, or frequency-domain resources occupied by the cells of the first base station and the cells of the second base station that are mutually interfered by the determining unit 51 to reduce interference.
- the device 50 can implement the method 20, and details are not described herein again.
- the device of the present invention can provide a device for interference coordination, and the beam of the cell of the base station is staggered and transmitted on the time-frequency resource, the time-domain resource or the frequency domain resource, and the base station can be reduced without increasing the uplink overhead.
- Mutual interference between beams of a cell can be reduced without increasing the uplink overhead.
- Figure 6A is a schematic block diagram of another apparatus 60 for interference coordination in accordance with an embodiment of the present invention.
- the base station can be a specific implementation of the device 60.
- the determining unit 61 and the interference coordinating unit 61 of the device 60 are the same as or similar to the determining unit 51 and the interference coordinating unit 52 of the device 50, and the external device 60 further includes a generating unit 63 and a receiving unit 64.
- the determining unit 61 determines, according to the first interference information and the second interference information, a beam that the cell of the first base station and the cell of the second base station interfere with each other, where the first interference information includes a first cell set, and the first cell set And consisting of a first interfering cell to which an interference beam of a beam of a cell of the first base station belongs, the second interference information includes a second cell set, and the second cell set is a beam of a cell of the second base station The second interfering cell component to which the interference beam belongs.
- the interference coordination unit 62 coordinates time-frequency resources, time-domain resources, or frequency-domain resources occupied by the cells of the first base station and the cells of the second base station that are mutually interfered by the determining unit 61 to reduce interference.
- the generating unit 63 generates the first interference information used by the determining unit based on the information reported by the UE.
- the receiving unit 64 receives the second base station sending by using an X2 protocol interface or an S1 protocol interface.
- the second interference information is not limited to Bluetooth, Wi-Fi, Wi-Fi, Wi-Fi, Wi-Fi, Wi-Fi, Wi-Fi, Wi-Fi, Wi-Fi, Wi-Fi, Wi-Fi, Wi-Fi, Wi-Fi, Wi-Fi, Wi-Fi, Wi-Fi, Wi-Fi, Wi-Fi, Wi-Fi, Wi-Fi Protectet Access (WPA) protocol, or an S1 protocol interface.
- the apparatus 60 can implement the methods 20 and/or 30, and details are not described herein again.
- the device of the present invention can provide a device for interference coordination, and the beam of the cell of the base station is staggered and transmitted on the time-frequency resource, the time-domain resource or the frequency domain resource, and the base station can be reduced without increasing the uplink overhead.
- Mutual interference between beams of a cell can be reduced without increasing the uplink overhead.
- the generating unit 63 of the device 60 may further include a grouping module 631, a sorting module 632, and a generating module 633.
- the grouping module 631 divides the UEs reporting the same PMI into a group when the information reported by the UE includes the precoding matrix PMI and the reference signal receiving level RSRP.
- the sorting module 632 sorts the neighboring cells to which the RSRP reported by the UEs in the same group is grouped according to the reported RSRP.
- the generating module 633 determines the first cell set based on the neighboring cell that is sorted by the sorting module 632, and generates the first interference information.
- the grouping module 631 when the reported information further includes the channel quality information CQI, the reported CQI is smaller than a specific threshold, and the UEs reporting the same PMI are grouped into one group.
- the sorting module 632 processes the RSRPs of the same neighboring cell on the UE in the same group, and the processed RSRPs are used as the RSRPs of the same neighboring cell to sort all the neighboring cells from large to small.
- the sorting order of the neighboring cells corresponds to the order in which the interference of the beams of the cells of the first base station is strong to weak.
- the sorting module 632 calculates the weighted RSRP by using the load information of the base station to which the neighboring cell belongs, and the weighted RSRP, and sorts all the neighboring cells by the weighted RSRP.
- the first interference information generated by the generating module 633 further includes an interference strength value of the first interfering cell, and the second interference information further includes an interference intensity value of the second interfering cell;
- the first interference information further includes an interference strength number of the first interfering cell, and the second interference information further includes an interference strength number of the second interfering cell; or the An interference information further includes an appearance order of a beam of a cell of the first base station, and the second interference information further includes an appearance order of a beam of a cell of the second base station; or the first interference information further includes An interference strength value of the first interfering cell and an appearance order of a beam of the cell of the first base station, and the second interference information further includes an interference strength value of the second interfering cell and a cell of the second base station The order of occurrence of the beam; or the first interference information further includes an interference strength number of the first interfering cell and an appearance order of a beam of a cell of the first base station, and the second interference information further includes the The interference strength number of the second
- the beam of the cell of the first base station is formed after beamforming based on the PMI
- the beam of the cell of the second base station is formed after beamforming based on the PMI
- FIG. 7 is a schematic block diagram of another apparatus 70 for interference coordination in accordance with an embodiment of the present invention.
- the core network element can be used as a specific implementation method of the device 60.
- the determining unit 71 and the interference coordinating unit 71 of the device 70 are the same as or similar to the determining unit 51 and the interference coordinating unit 52 of the device 50. Further, the device 70 further includes an obtaining unit 73 and a transmitting unit 74.
- the determining unit 71 determines, according to the first interference information and the second interference information, a beam that the cell of the first base station and the cell of the second base station interfere with each other, where the first interference information includes a first cell set, and the first cell set And consisting of a first interfering cell to which an interference beam of a beam of a cell of the first base station belongs, the second interference information includes a second cell set, and the second cell set is a beam of a cell of the second base station The second interfering cell component to which the interference beam belongs.
- the obtaining unit 73 acquires the first interference information and the second interference information used by the determining unit 71 by using an S1 protocol interface, where the first interference information is generated by the first base station, and the second interference information is generated by the first base station. Generated by the second base station.
- the interference coordination unit 72 coordinates the time domain resources occupied by the beams of the mutual interference between the cell of the first base station and the cell of the second base station acquired by the acquiring unit.
- the apparatus 70 can implement the methods 20 and/or 40, and details are not described herein again.
- the device of the present invention can provide a device for interference coordination, and the beam of the cell of the base station is staggered and transmitted on the time domain resource, and the interference between the beams of the cell of the base station can be reduced without increasing the uplink overhead. .
- each functional unit in various embodiments of the present invention may be integrated into one processing unit
- each unit may exist physically separately, or two or more units may be integrated into one unit.
- the functions, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium.
- the technical solution of the present invention which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
- the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
- the foregoing storage medium includes: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, and the program code can be stored. Medium.
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Abstract
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EP13771760.9A EP2824984B1 (en) | 2012-04-06 | 2013-04-03 | Method and device for interference coordination |
US14/500,799 US9544909B2 (en) | 2012-04-06 | 2014-09-29 | Method and device for interference coordination |
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CN103369539A (zh) | 2013-10-23 |
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EP2824984A4 (en) | 2015-02-18 |
EP2824984B1 (en) | 2016-11-23 |
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