WO2012167751A1 - 处理小区间干扰的方法及装置 - Google Patents

处理小区间干扰的方法及装置 Download PDF

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Publication number
WO2012167751A1
WO2012167751A1 PCT/CN2012/076703 CN2012076703W WO2012167751A1 WO 2012167751 A1 WO2012167751 A1 WO 2012167751A1 CN 2012076703 W CN2012076703 W CN 2012076703W WO 2012167751 A1 WO2012167751 A1 WO 2012167751A1
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WO
WIPO (PCT)
Prior art keywords
cell
downtilt
user equipment
antenna
frequency resource
Prior art date
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Ceased
Application number
PCT/CN2012/076703
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English (en)
French (fr)
Inventor
万蕾
冯心睿
伍勇
刘建琴
孙伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to EP12796362.7A priority Critical patent/EP2709394B1/en
Publication of WO2012167751A1 publication Critical patent/WO2012167751A1/zh
Priority to US14/100,281 priority patent/US9565010B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/0073—Allocation arrangements that take into account other cell interferences
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0026—Division using four or more dimensions, e.g. beam steering or quasi-co-location [QCL]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering

Definitions

  • the present invention relates to the field of communications, and in particular, to a method and apparatus for handling inter-cell interference. Background technique
  • the downtilt angle is the direction of the main main beam of the antenna.
  • the signal receiving power and signal receiving quality of the UE will be the highest.
  • the AAS Active Antenna System
  • the downtilt angle of the antenna per time-frequency resource block can be aligned with the target UE to improve the signal receiving power of the target UE. Improve signal reception quality.
  • the elevation angle of most UEs is smaller than the downtilt angle set when the antenna antenna adopts a uniform downtilt angle, so that the antenna is on the per-frequency resource block.
  • the set downtilt angle is aligned with the target UE, and the downtilt angle set by the AAS system will cause the vertical beam on each time-frequency resource block to further point to the cell edge.
  • the signal interference power of the neighboring cell UE is increased, which in turn affects the SINR (Signal-to-Interference Plus Noise Ratio) of each UE.
  • SINR Signal-to-Interference Plus Noise Ratio
  • the present invention provides a method and a device for processing inter-cell interference, in order to avoid the interference to the neighboring cell UE while ensuring the received signal strength of the UE in the current cell.
  • the technical solution is as follows: A method for processing inter-cell interference, the method comprising:
  • the downtilt angle coordination information of the local cell downtilt coordination information and the neighboring cell downtilt coordination information includes: an optimal downtilt information of a user equipment on a cell antenna for a cell service range, and a cell service range Location information of the internal user equipment, location information of the cell base station, usage probability of the up and down angle of each time-frequency resource block on the cell antenna, probability of each time-frequency resource block of the cell base station being allocated to different user equipments, and when not recommending the neighboring cell antenna One or more of the downtilts used by the frequency resource block.
  • An apparatus for processing inter-cell interference includes: an obtaining module and a setting module; the acquiring module, configured to acquire a downtilt angle coordination information of the current cell and a down-tilt angle coordination information of the neighboring cell, where the down-tilt angle coordination information of the local cell And any downtilt coordination information of the neighboring cell downtilt coordination information includes: optimal downtilt information of the time-frequency resource block on the cell antenna for the user equipment in the cell service range, location information of the user equipment in the cell service range, and the cell The location information of the base station, the probability of using the up and down angle of each time-frequency resource block on the cell antenna, the probability of each time-frequency resource block allocated by the cell base station to different user equipments, and the downtilt angle used for the time-frequency resource block on the neighboring cell antenna are not recommended.
  • the acquiring module configured to acquire a downtilt angle coordination information of the current cell and a down-tilt angle coordination information of the neighboring cell, where the down-t
  • the setting module is configured to set, according to the local cell downtilt coordination information and the neighboring cell downtilt coordination information acquired by the acquiring module, a downtilt angle of the time-frequency resource block on the antenna of the cell for the user equipment to be coordinated.
  • the technical solution provided by the embodiment of the present invention has the beneficial effects that: by acquiring the downtilt angle coordination information of the cell and the downtilt angle coordination information of the neighboring cell, the cell is set according to the downtilt angle coordination information of the cell and the downtilt angle coordination information of the neighboring cell.
  • FIG. 1 is a schematic diagram of an antenna downtilt angle provided in the background art of the present invention.
  • FIG. 2 is a schematic diagram of a UE pitch angle provided in the background art of the present invention.
  • FIG. 3 is a flowchart of a method for processing inter-cell interference according to an embodiment of the present invention
  • FIG. 4 is a flowchart of another method for processing inter-cell interference according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of a DOA of a user equipment according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a method for measuring three-dimensional precoding according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of a downlink device CSI-RS transmitted by a user equipment according to an embodiment of the present invention
  • FIG. 8 is a schematic diagram of a method for calculating a downtilt angle according to an embodiment of the present invention
  • FIG. 9 is a block diagram of an apparatus for processing inter-cell interference according to an embodiment of the present invention. detailed description
  • an embodiment of the present invention provides a method for processing inter-cell interference, where an execution entity of the method includes a serving base station or a network node, and the like, which is not specifically limited in this embodiment, and includes: Step 101: Acquire a local cell Downtilt angle coordination information and neighboring cell downtilt coordination information; Step 102: Set a downtilt angle of the time-frequency resource block on the antenna of the current cell for the user equipment to be coordinated according to the downlink downtilt coordination information of the local cell and the downtilt coordination information of the neighboring cell ;
  • the downlink downtilt coordination information of the local cell and the downtilt coordination information of the neighboring cell downtilt coordination information includes: an optimal downtilt information of the user equipment in the cell service range on the cell antenna, and a cell Location information of user equipment within the service area, location information of the cell base station, The probability of using the up and down angle of each time-frequency resource block on the cell antenna, the probability of each time-frequency resource block of the cell base station being allocated to different user equipments, and one or more of the downtilt angles used by the time-frequency resource block on the neighboring cell antenna are not recommended. item.
  • the technical solution for setting the downtilt angle of the time-frequency resource block on the antenna of the cell to the user equipment to be coordinated according to the down-tilt coordination information of the cell and the down-tilt coordination information of the neighboring cell is obtained by acquiring the down-tilt coordination information of the cell and the down-tilt coordination information of the neighboring cell.
  • the implementation is such that when the time-frequency resource block of the local cell antenna is set for the downtilt angle of the user equipment to be coordinated, the down-tilt coordination information of the local cell and the neighboring cell is referenced, and the signal receiving power of the user equipment in the service range of the cell is ensured. While the SINR experience, it avoids interference to user equipment within the service range of the neighboring cell.
  • the executor of the method includes a serving base station or a network node, and the like, which is not specifically limited in this embodiment of the present invention. , see Figure 4, the specific method is as follows:
  • Step 201 The base station of the cell acquires the downtilt angle coordination information of the local cell and the downtilt angle coordination information of the neighboring cell, wherein any downtilt angle coordination information of the downtilt angle coordination information of the cell and the downtilt angle coordination information of the neighboring cell includes: time-frequency resources on the cell antenna
  • the block is directed to the optimal downtilt information of the user equipment in the cell service range, the location information of the user equipment in the cell service range, the location information of the cell base station, the usage probability of the up and down angle of each time-frequency resource block on the cell antenna, and the time and frequency of the cell base station.
  • the step specifically includes the following operations:
  • Step 201-1 The base station of the cell acquires the downtilt angle coordination information of the local cell, where the downtilt angle coordination information of the cell includes: the downtilt angle coordination information of the local cell and the downtilt angle coordination information of the neighboring cell downtilt angle coordination information, including: the current cell
  • the time-frequency resource block on the antenna is for the optimal downtilt information of the user equipment in the cell service range, the location information of the user equipment in the service range of the cell, and the location of the base station of the local cell.
  • the probability of use of the up and down angle of each time-frequency resource block on the antenna of the local cell the probability of each time-frequency resource block of the base station allocated to different user equipments, and the downtilt angle used by the time-frequency resource block on the neighboring cell antenna are not recommended.
  • the obtaining, by the base station, the optimal downtilt information of the time-frequency resource block on the antenna of the local cell for the user equipment in the service area of the cell includes the following operations:
  • Step 201-1-1 The base station of the cell acquires the DOA (wave direction) information parameter of the user equipment in the antenna service range of the local cell, where the DOA parameter includes at least the antenna time-frequency resource block of the local cell for the user equipment in the service range of the local cell.
  • the DO A parameter may further include azimuth information of the user equipment antenna time-frequency resource block for the user equipment in the service range of the cell; see FIG. 5, which is the DOA of the user equipment.
  • azimuth refers to the angle between the direction of the incoming wave and the horizontal side of the antenna and the direction of the side view of the antenna of the cell.
  • the array in the figure refers to the antenna array on the base station. .
  • the DOA information of the user equipment can be obtained in one of three ways:
  • the first method is to obtain, according to an uplink channel quality measurement reference signal reported by the user equipment in the service area of the cell, a direction of arrival parameter of the user equipment in the service range of the local cell;
  • the base station of the cell uses the general DOA algorithm to report the uplink SRS (Sounding Channel Signal) to the user equipment in the service range of the cell (such as the user equipment periodically reporting or receiving the signaling configured by the base station)
  • the reference signal is estimated to obtain the DOA parameter of the user equipment in the range of the cell.
  • the DOA algorithm includes a Capon algorithm, a Music (Multiple Signal Classification) algorithm, and the like, which is not specifically limited in this embodiment of the present invention.
  • the signal receiving array of the antenna on the base station of the cell performs an array response estimation on the received uplink SRS reported by the user equipment in the service range of the cell, and then responds with an array corresponding to different DOAs.
  • the signal receiving array in the vertical direction scans the received SRS between 0° and 180°, and obtains 10 by using the Capon algorithm. .
  • the antenna time-frequency resource block of the local cell is considered to be 10° to 15 for the user equipment in the service range of the cell.
  • the DOA parameter is the azimuth information of the user equipment of the cell antenna in the service range of the cell
  • the signal receiving array in the horizontal direction is related to the received SRS between 0° and 360°.
  • Degree scan, sampling Capon algorithm is obtained at 85.
  • the cell antenna time-frequency resource block is considered to have an azimuth of 85 for the user equipment in the service range of the cell. Between 95°.
  • the user equipment in the surrounding area transmits a channel state information reference signal with different direction of arrival parameters, and receives a corresponding signal corresponding to the reference signal whose signal received strength is greater than a preset threshold measured by the user equipment in the service range of the cell.
  • Direction parameter
  • the base station of the cell transmits different downlink state CSI-RSs (Channel State Information Reference Signals) to the user equipments in the service range of the cell, where each CSI-RS is different.
  • the DOA parameter is received by the user equipment, and the signal receiving strength of the CSI-RS is measured, and the DOA parameter corresponding to the CSI-RS whose measured signal receiving strength is greater than the preset value is returned to the base station of the cell; The DOA parameter fed back by the user equipment.
  • CSI-RSs Channel State Information Reference Signals
  • the cell base station The DOA parameters transmitted to the user equipment within the service range of the cell are respectively ⁇ /6. , 3° / 8. , 5. /8. And 6° /10° CSI-RS; the user equipment receives and measures the CSI-RS signal reception strength under the above DOA parameters, such as 48%, 89%, 60% and 40% respectively; the user equipment can receive the signal
  • the user equipment may use the index number to number the DOA, and return the DOA index number to the base station of the cell, and when the user equipment needs to feed back multiple DOAs to the base station of the cell.
  • the user equipment may report the index number of the multiple DOA to the base station of the local cell by using the existing differential method; after receiving the index number of the DOA returned by the user equipment, the base station of the cell according to the pre-stored index number and the DOA information
  • the relational table lookup obtains DOA information.
  • Manner 3 The time-division, frequency-division, or code-division method is used to send a reference signal to the user equipment in the service range of the cell in the pilot resource grid in the time-frequency resource block of the antenna of the cell, and receive the user in the service range of the cell. And determining, by the device, the precoding of the obtained channel state according to the reference signal, and obtaining, according to the precoding estimation, a direction of arrival parameter of the user equipment in the service range of the local cell;
  • the base station sends a reference signal to the user equipment in the antenna service range of the local cell by using the pilot resource grid in the time-frequency resource block on the antenna of the cell in a time division, frequency division, or code division manner; Referring to the signal, and estimating the channel state of the channel corresponding to each pilot resource frame according to each reference information, obtaining a channel matrix of N ⁇ M dimensions, and obtaining precoding used by the recommended transmitting end according to the channel matrix, where N r is the user The number of receiving antennas on the device side, M is the number of pilot resource cells in the time-frequency resource block on the base station antenna; the base station receives the pre-coding fed back by the user equipment, and obtains the DOA parameters of the user equipment according to the pre-coding and decoding;
  • Each of the squares in FIG. 7 represents a pilot resource block in the time-frequency resource block on the antenna of the local cell
  • the frequency division transmission mode The pilot resource resources in the time-frequency resource block on the antenna of the local cell are served to the antenna of the cell at different frequencies at the same time.
  • the reference signal sent by the user equipment is specifically as shown in (a) of FIG. 7.
  • the eight pilot resource cells send reference signals of eight ports to the user equipment in the antenna service range of the local cell, as shown in the first column and the second column in (a), and the frequency division transmission manner is given at two moments.
  • Time-division transmission mode At different times on the same frequency point, the reference signal transmitted by the user equipment in the antenna service area of the local cell through the pilot resource grid in the time-frequency resource block on the antenna of the cell, as shown in FIG. 7 (b)
  • the pilot resource grid in the time-frequency resource block on the antenna of the cell As shown in FIG. 7 (b)
  • there are 8 pilot resource blocks in the time-frequency resource block and each of the 4 groups is at 2 frequency points, and the pilot signals of the 8 array ports pass the same frequency point and 2 different moments.
  • the eight pilot resource cells are transmitted, as shown in the first row and the second row in (b), and a schematic diagram of transmitting reference information at two different times of the same frequency point is given;
  • the reference signal transmitted by the pilot resource grid in the time-frequency resource block of the antenna on the antenna of the cell to the user equipment in the antenna service range of the cell is as shown in (c) of FIG. 7
  • there are 8 pilot resource cells in the time-frequency resource block and 8 array ports are divided into 2 groups, each group containing 4 ports.
  • the pilot signal of the nth port in group 2 is multiplied by another sequence of length 2 (denoted as b, a and b are orthogonal) , placed in the nth group of pilot resource cells in the same position as the pilot signal of the nth port of the group 1, as shown in FIG. 7(c);
  • the user equipment numbers the precoding by using an index number, and returns the precoded index number to the base station; the base station searches for the pre-stored according to the received precoded index number.
  • the correspondence between the index number and the precoding is precoded; if the DOA parameter includes the downtilt information and the azimuth information of the user equipment of the cell time-frequency resource block for the user equipment in the service range of the cell, and the downtilt and azimuth information If it is separable, the downtilt and azimuth information can be quantized separately, expressed as an index number, and then the index numbers are separately or jointly reported to the base station.
  • the precoding is uniformly quantized. Report the corresponding index number to the base station.
  • the base station needs to configure a signaling procedure to notify the user equipment to prepare for CSI-RS or pilot measurement. Feedback information is fed back within the required time.
  • the down-tilt information of the user equipment antenna time-frequency resource block obtained by one of the foregoing manners for the user equipment in the service range of the cell and the signal reception strength under the downtilt angle are as shown in Table 1;
  • the embodiment of the present invention may perform some processing on the downtilt or/and the azimuth of the antenna for the user equipment in the service range according to the acquired DOA parameter, so that the user equipment can receive the signal better.
  • the embodiment of the present invention focuses on how to set the downtilt angle of the time-frequency resource block on the antenna for the user equipment to be coordinated according to the downtilt information in the acquired DOA parameter, and how to obtain the azimuth information according to the acquired DOA parameter.
  • the method for processing the azimuth of the antenna for the user equipment in the service range is similar to this, and will not be described again.
  • Step 201-1-2 The base station of the cell determines, according to the direction of arrival parameter, an optimal downtilt information of the time-frequency resource block on the antenna of the cell for the user equipment in the service range of the cell;
  • the time-frequency resource on the cell antenna is defined according to the down-tilt information of the user equipment in the service range of the cell and the signal receiving strength corresponding to the down-tilt information in the acquired uplink direction time-frequency resource block.
  • the optimal downtilt angle of the block for the user equipment in the service range includes: selecting, from the acquired DOA direction parameter, the local cell antenna time-frequency resource block, for the user's downtilt information in the service range of the cell, selecting the user When the device receives the signal sent by the base station, the device receives the lowest downtilt angle of the signal, and serves as the optimal downtilt angle for the user equipment in the service range on the time-frequency resource block on the antenna;
  • the optimal downtilt angle of the time-frequency resource block on the antenna of the cell for the user equipment in the service range is as shown in Table 2:
  • the local base station obtains the location information of the user equipment in the service range of the cell, such as One of the two ways to get:
  • the downtilt information of the user equipment in the service area of the cell, and the location information of the user equipment in the service range of the cell is calculated according to the direction of arrival parameter;
  • the location of the user equipment can be calculated according to the geometric trigonometric function formula according to the downtilt information of the antenna time-frequency resource block for the user equipment;
  • Manner 2 Receive location information obtained by user equipment according to a predetermined positioning technology in a service scope of the cell;
  • the user equipment After receiving the instruction for acquiring the location information sent by the base station of the local cell, the user equipment returns the location information obtained by the positioning to the base station according to the predetermined positioning technology, where the predetermined positioning technology includes GPS positioning, DOA positioning, or Positioning technology such as TDOA positioning;
  • the base station acquires the usage probability of the up and down inclination of each time-frequency resource block on the cell antenna, and uses the probability of the up-down inclination of each time-frequency resource block on the antenna of the cell;
  • the downslope used by the base station to obtain the time-frequency resource block of the neighboring cell antenna is not: the time-frequency resource block of the neighboring cell antenna reported by the user equipment that is received by the local cell service is for the predetermined user equipment.
  • the downtilt information is selected from the downtilt information of the predetermined user equipment from the time-frequency resource block on the neighboring cell antenna, and the downtilt angle used by the time-frequency resource block on the neighboring cell antenna is not recommended.
  • UE1 which is located in the overlapping coverage area of the local cell and the neighboring cell, is served by the UE, and the downtilt angle for the UE1 on the neighboring cell antenna time-frequency resource block is 2.
  • the receiving strength of the signal sent by the UE1 to the neighboring cell is 35%, it indicates that the UE1 receives strong interference from the neighboring cell. Therefore, the neighboring cell does not recommend the downtilt angle of the neighboring cell with a downtilt angle of 2° or less.
  • Step 201-2 The base station of the cell acquires the downtilt angle coordination information of the neighboring cell, where the neighboring cell is tilted down
  • the angle coordination information includes: optimal downtilt information of the time-frequency resource block on the neighboring cell antenna for the user equipment in the cell service range, location information of the user equipment in the service range of the neighboring cell, location information of the neighboring cell base station, and antennas on the neighboring cell antenna
  • the probability of use of the up-down tilt of the time-frequency resource block, the probability of each time-frequency resource block of the neighboring cell base station being allocated to different user equipments, and one or more of the downtilt angles used by the time-frequency resource block on the neighboring cell antenna are not recommended;
  • the local cell base station receives the neighboring cell downtilt coordination information sent by the neighboring cell base station, where the neighboring cell downtilt coordination information is obtained by the neighboring cell base station by using the method described in the foregoing step 201-1, where it is no longer Description:
  • the base station of the cell receives the neighboring cell downtilt coordination information sent by the neighboring cell base station by using the predetermined interface.
  • the cell downlink down coordination information obtained by the neighboring cell base station may be sent to the neighboring cell base station, where the predetermined interface may be Is the X2 interface between two adjacent base stations;
  • the base station acquires the down-tilt coordination information of the neighboring cell, including the downtilt angle used by the time-frequency resource block of the neighboring cell of the neighboring cell, the following method may also be implemented:
  • the directional direction parameter includes at least a downtilt angle information of the user equipment time-frequency resource block for the user equipment in the service range of the neighboring cell, and according to the direction of arrival parameter Determining the downtilt angle used by the time-frequency resource block on the neighboring cell of the neighboring cell.
  • the obtaining the direction of arrival parameters of the user equipment in the neighborhood service area includes:
  • the channel state information reference signals of different directional direction parameters are sent to the user equipments in the service area of the neighboring cell on the pilot resource grids in the time-frequency resource block on the antenna of the local cell, and the user equipment feedback in the service range of the neighboring cell is received.
  • the directional direction parameter corresponding to the reference signal whose received signal strength is greater than the preset threshold is received by the reference signal; wherein, in a specific implementation, the user equipment in the neighboring cell service range may obtain the reference signal of the local cell from the base station of the local cell in advance.
  • the direction of arrival parameter of the user equipment after the measurement may be directly sent to the base station of the local cell, or may be sent And sending, by the base station of the neighboring cell, the direction of arrival parameter to the base station of the local cell by using an interface between the base station of the neighboring cell and the base station of the local cell.
  • the time-division, frequency-division or code-division method is used to transmit a reference signal to the user equipment in the service area of the neighboring cell on each pilot resource grid in the time-frequency resource block of the antenna of the cell, and the user equipment in the service range of the neighboring cell is estimated according to the reference signal.
  • the user equipment in the service area of the neighboring cell may obtain the original from the base station of the local cell in advance
  • the information about the reference signal of the cell, the precoding of the channel state fed back by the user equipment after the measurement may be directly sent to the base station of the local cell, or may be sent to the base station of the neighboring cell serving the user equipment, by the neighbor
  • the base station of the cell forwards the precoding of the channel state to the base station of the local cell by using an interface with the base station of the local cell.
  • the specific sequence of the uplink channel quality measurement reference signal reported by the user equipment in the neighboring cell antenna service range may be obtained by the neighboring cell base station by using the displayed or implicitly notified information before the reference signal is measured. .
  • step 201-1-1 For details on the above methods, refer to the related description in step 201-1-1, which will not be described here.
  • the base station of the cell allocates a time-frequency resource block to the user equipment to be coordinated on the antenna of the local cell according to the down-tilt coordination information of the cell;
  • the time-frequency resource block is allocated to the user equipment to be coordinated on the antenna of the cell in the following three manners:
  • the first method is to classify the user equipments in the service area of the cell, and use the classification information of the user equipment in the service area of the cell according to the FFR (Frequency Frequency Reuse) scheduling principle to be the coordinated user equipment on the antenna of the local cell. Allocating time-frequency resource blocks;
  • Step 202-1A Perform location classification on the user equipment in the service area of the cell, and obtain location classification information of the user equipment in the cell service scope;
  • the user equipment in the service area of the cell can be classified by one of the following two methods:
  • the first method is to classify the user equipment in the service range of the cell according to the preset allocation rule according to the preset allocation rule according to the optimal downtilt information of the user equipment in the service area of the cell in the downtilt coordination information of the cell. ;
  • the user equipment that is optimally tilted into the first preset range by the user equipment is used as the first type of user equipment
  • the user equipment that is optimally tilted into the second preset range by the user equipment is used as the second type.
  • the user equipment selects the user equipment as the third type of user equipment and the like by optimally tilting the user equipment into a third preset range.
  • the user equipment with the user equipment optimally tilted down to the 5° range is referred to as the first type of user equipment, which is referred to as the cell edge zone user equipment; and the user equipment is optimally tilted into the corner by 6° to 10.
  • the user equipment in the range is referred to as the second type of user equipment, which is referred to as the user equipment in the middle of the cell; the user equipment is optimally tilted into the corner 11 .
  • the user equipment in the range is regarded as the third type of user equipment, which is called the user equipment in the center of the community.
  • the classified user equipment can use the collection ⁇ ⁇ ⁇ to indicate, where ⁇ represents the downslope interval subscript ("center”, “outer”, “edge”), "center”, “outer”, and “” on the time-frequency resource block on the antenna for the user equipment.
  • “edge” indicates the middle zone of the cell, the middle zone of the cell and the edge zone of the cell, foe (ue is the optimal downtilt angle of 11 and 0 5 ⁇ is the angular interval segment corresponding to the zone.
  • 0 6 ⁇ 911. ⁇ 9 ⁇ 5..
  • ⁇ 0 ⁇ 6.
  • ⁇ ⁇ ⁇ 10 ⁇ ⁇ , 0 edge ⁇ 9lll ° ⁇ ⁇ ⁇ 15 0 ⁇ .
  • UEi belongs to a small UE edge ; UE 3 belongs to the UE. Uter ; UE 2 belongs to " ⁇ " UE cen t er .
  • Manner 2 According to the location information of the user equipment in the service scope of the cell in the downlink downtilt coordination information of the cell, the user equipment in the service scope of the cell is directly classified.
  • Step 202-2A According to the location classification information of the user equipment in the service scope of the cell, the user equipment with a large degree of coordination in the service scope of the cell is taken out, and is recorded as a set Uedgej;
  • the degree of interference to the neighboring cell is higher than that of the cell in the middle zone or the cell center zone, that is, the UE belonging to the UE edge .
  • the coordination is more urgent. It is assumed here that there are 2 neighboring cells.
  • the UE belonging to the UE edge which is obtained from the down-tilt coordination information of the cell 1, includes U, UE 5 , and UE 7 , and is denoted as ⁇ , and the UE belonging to the UE edge acquired from the down-tilt coordination information of the cell 2 includes the UE 10 , UE 9 , UE 60 , denoted as U e d GE , 2;
  • Step 202-3A How many adjacent cells are separated from each other by a frequency band that does not overlap each other? ⁇ .. ⁇ , such as cell No. 1 corresponding to F 1 2 cell corresponding to F 2 , ..., L cell corresponding to FL, called the coordinated frequency band of cell No. 1;
  • Step 202-4A dividing Uedg ⁇ of the neighboring cell into different coordinated frequency bands
  • the number 1 community will UE 5 , UE 7 ⁇ is divided into frequency bands, and cell 2 will UE 9 , UE 6 . ⁇ is divided in frequency band F 2 ;
  • Step 202-5A Perform coordinated scheduling of time-frequency resources on the user equipment according to the PF (Proportional Fair) priority level in the allocated frequency band, specifically, allocate time-frequency resources to the time-frequency resources.
  • PF Proportional Fair
  • the devices in the two neighboring cells that may cause a large interference to the other party are allocated to two different frequency bands, which prevents the neighboring cell from allocating the same time-frequency resource to the user equipment that interferes with the neighboring cell, which can reduce the subsequent The difficulty of downtilt coordination.
  • Manner 2 classify user equipments within the service scope of the community, according to the service scope of the community Allocating time-frequency resource blocks for the to-be-coordinated user equipment on the antenna of the cell according to the SFR (Soft Frequency Reuse) scheduling principle;
  • Step 202-1B Perform location classification on the user equipment in the service scope of the cell, and obtain location classification information of the user equipment in the cell service scope;
  • step 202-1A The specific implementation process of this step is detailed in the description of step 202-1A, and will not be described here.
  • Step 202-2B According to the location classification information of the user equipment in the service scope of the cell, the user equipment with a large degree of coordination in the service scope of the community is taken out, and is recorded as a set Uedgej;
  • This step is specifically the same as step 202-2A, and will not be described here.
  • Step 202-3B The adjacent cells are divided into mutually overlapping frequency bands F 1 , . . . , F L , for example, the cell No. 1 corresponds to the F l 2 cell corresponding to F 2 , ... , L The number cell corresponds to a coordinated frequency band called cell 1;
  • Step 202-4B The user equipment in the Uedgej of the cell 1 has a high priority in the allocated coordinated frequency band, and the other user equipments served have a low priority in the coordinated frequency band, and the user equipment in the Uedgej of the cell 1 is in the There is a low priority on the non-coordinating frequency band, and other user equipments served have high priority in the uncoordinated frequency band;
  • Step 202-5B Perform coordinated allocation of time-frequency resources on the user equipment according to the priority of the PF (Proportional Fair) priority, and adjust the priority of the user equipment; specifically, 1 cell is on When the resource block is allocated, it is determined whether the user equipment belongs to the Uedge. If yes, the PF priority of the user equipment is adjusted to
  • PF. Rigi . n is the PF calculated according to CQI (Channel quality indicator) and historical rate before adjustment, a>l and 0 ⁇ b ⁇ l; similarly, 1 cell is in addition to other
  • CQI Chip quality indicator
  • Uedgej User Equipment
  • Step 202-6B Allocating a time-frequency resource to the user equipment according to the adjusted priority, specifically, allocating the time-frequency resource to the user equipment with the highest PF priority on the time-frequency resource;
  • the third method is to classify the user equipments in the service scope of the cell, according to the classification information of the user equipment in the service scope of the cell and the usage probability of the up and down inclination of each time-frequency resource block on the neighboring cell antenna in the neighboring cell coordination information.
  • the dynamic scheduling principle allocates a time-frequency resource block to the to-be-coordinated user equipment on the antenna of the local cell;
  • the parameter step for the method of classifying the user equipment in the service scope of the community is a parameter step for the method of classifying the user equipment in the service scope of the community
  • the coordinated scheduling according to the custom dynamic scheduling principle specifically includes:
  • the cell When the cell allocates the kth resource block to the user equipment, the cell refers to the down-tilt coordination information of the neighboring cell, and adjusts the priority of the user equipment according to the information. For example, the cell does not recommend the downtilt according to the down-tilt coordination information of the neighboring cell. Or the downtilt usage probability to determine coordination criteria, a preferred criterion is: On the same resource block:
  • the cell preferentially allocates the resource block to the user equipment in U cento , and the second priority is assigned.
  • User equipment in the network
  • the local cell preferentially allocates the resource block to the U C .
  • the second priority is assigned to The user equipment in the u center
  • the third priority is assigned to the user equipment in the u edge ;
  • the local cell preferentially allocates the resource block to the user equipment in the 11 ⁇ , and the second priority is allocated to the user equipment.
  • the third priority is assigned to the user equipment in the U center ;
  • step 202 is an optional step.
  • the step is to ensure that the vertical beam does not collide when the downtilt angle of the neighboring cell for the user equipment on the same resource block is equal to the optimal downtilt angle for the user equipment. Reduce the difficulty of subsequent downtilt coordination;
  • Step 203 Set, according to the downlink downtilt coordination information of the cell and the downtilt angle coordination information of the neighboring cell, a downtilt angle of the time-frequency resource block on the antenna of the small area for the user equipment to be coordinated.
  • This step specifically includes the following operations:
  • Step 203-1 Determine, according to the downlink downtilt coordination information of the cell and the downtilt angle coordination information of the neighboring cell, a downtilt range that can be used by the time-frequency resource block on the antenna of the cell for the user equipment in the service range of the cell; And the down-tilt coordination information of the neighboring cell determines that the down-tilt range that can be used by the time-frequency resource block on the antenna of the cell for the user equipment in the service range of the cell may include: the time-frequency resource block on the antenna of the local cell according to the downlink down-angle coordination information of the cell Determining, according to the optimal downtilt information of the user equipment in the service area of the cell, an optimal downtilt range of the time-frequency resource block on the antenna of the cell for the user equipment in the service range of the cell, and taking the optimal downtilt range In the neighboring cell downtilt information, the downtilt range outside the downtilt angle used by the neighboring cell is not recommended as the down
  • the optimal downtilt angle of the user equipment UE1 in the service area of the cell is 1.
  • the optimal downtilt angle of UE2 is 14.
  • the optimal downtilt angle of the UE3 is 9 degrees, and the optimal downtilt angle of the antenna time-frequency resource block of the local cell for the user equipment in the service area of the cell may be set to 1 ° to 14°, the downtilt angle used by the unrecommended neighboring cell on a certain time-frequency resource block in the neighboring cell downtilt coordination information sent by the neighboring cell base station is 4°, and the local cell antenna is targeted to the time-frequency resource block.
  • the downtilt range of the user equipment in the service area of the community is 4. To 14. ;
  • determining, according to the downlink downtilt coordination information of the cell and the downtilt coordination information of the neighboring cell, the downtilt range of the time-frequency resource block on the antenna of the cell for the user equipment in the service area of the d may include: according to the downtilt angle coordination information of the cell
  • the time-frequency resource block on the antenna of the local cell determines the optimal downtilt range of the time-frequency resource block on the antenna of the cell for the user equipment in the service range of the cell, according to the optimal downtilt information of the user equipment in the service area of the cell;
  • the usage probability of the neighboring cell antenna in the down-tilt coordination information of the neighboring cell in the up-down direction of the time-frequency resource block, and the set of the down-tilt angle of the neighboring cell whose usage probability exceeds the first threshold is obtained, according to the location information of the neighboring cell base station and the base station of the local cell Position information, calculating a downtilt set B of the geographic location of the
  • the downtilt angle corresponds to the geographic location and the location information of the base station of the local cell, and calculates a downtilt set C of the
  • Angular range Determining, according to the optimal downtilt information of the user equipment in the service range of the local cell, the time-frequency resource block on the antenna of the local cell in the downlink down-tilt coordination information of the cell, determining the most time-frequency resource block on the antenna of the cell for the user equipment in the service range of the cell a preferred downtilt range; a probability that the time-frequency resource blocks of the neighboring cell base stations are allocated to different user equipments according to the neighboring cell downtilt coordination information, and the user equipment whose probability of the allocated neighboring cell time-frequency resource block is greater than the second threshold is determined according to Determining the location information of the UE and the location information of the base station of the local cell, and calculating a downtilt set D of the location information of the local cell for the searched UE; or according to the time-frequency resource block on the neighboring cell antenna Determining the optimal downtilt angle information of the UE and the location information of the neighboring cell base station, and calculating the optimal
  • the downtilt set B, C or D may be: the neighboring cell does not recommend the downtilt angle used by the time-frequency resource block on the neighboring cell antenna, and may be acquired by the neighboring cell base station and sent to the base station as the downtilt coordination information. It can also be obtained by the base station of the local cell according to the above method.
  • the downtilt angle in the set of downtilt angles of the neighboring cells and the location information of the base station of the neighboring cell can be used, and the geographical direction of the vertical main beam of the neighboring cell is obtained according to the geometric relationship.
  • Location that is, the geographic location corresponding to the set of downtilt angles of the neighboring cells.
  • the location information of the base station of the cell and the geographic location corresponding to the set of downtilt angles of the neighboring cell may be used to obtain a set of downtilt angles (e.g., B, C, or D) of the antenna of the cell according to the geometric relationship.
  • determining, according to the downlink downtilt coordination information of the cell and the downtilt coordination information of the neighboring cell, the downtilt range of the time-frequency resource block on the antenna of the cell for the user equipment in the service area of the d may include: according to the coordination information in the neighboring cell The location information of the neighboring cell base station and the local information in the coordination information of the local cell Calculating the distance between the base station and the neighboring cell base station based on the location information of the cell base station, and calculating the time-frequency resource block on the antenna of the cell according to the span and the vertical main beam width of the antenna of the cell according to the geometric relationship.
  • ⁇ 3 ⁇ , ⁇ is the downtilt range of the time-frequency resource block on the antenna of the cell for the user equipment in the service range of the cell
  • ⁇ ⁇ arctan(b*H/D)-BW/c
  • BW is the cell The vertical main beam width of the antenna
  • BW/2 is the main beam boundary pointing to the downtilt angle of the antenna time-frequency resource block when the distance between the base station and the neighboring cell base station is half
  • H is the difference between the height of the base station and the average height of the user equipment.
  • D is the spacing between the base station of the cell and the neighboring cell base station; where a, b, c, ⁇ are positive real numbers, preferably, a is 8, b is 2, c is 2, and ⁇ is 90°.
  • Step 203-2 Set, according to a preset downtilt range, a downtilt angle of the time-frequency resource block on the antenna of the local cell to the user equipment to be coordinated according to a preset rule.
  • the following steps can be used to set the downtilt angle of the time-frequency resource block on the antenna of the cell to coordinate the user equipment:
  • Manner 1 The time-frequency resource block on the antenna of the local cell in the coordination information of the current cell obtains the optimal downtilt information of the user equipment to be coordinated in the optimal downtilt information of the user equipment in the service area of the cell, and traverses the available down All available downtilt angles in the range of inclinations, find the usable downtilt angle closest to the optimal downtilt angle of the user equipment to be coordinated, and set the downtilt angle of the time-frequency resource block on the antenna of the local cell to the user equipment to be coordinated to The usable downtilt angle closest to the optimal downtilt angle of the user equipment to be coordinated;
  • Manner 2 traverse all available downtilt angles in the range of downtilt angles that can be used, find the available downtilt angle that maximizes the signal receiving power of the user equipment to be coordinated, and use the time-frequency resources on the antenna of the local cell.
  • the downtilt angle of the block for the user equipment to be coordinated is set to a usable downtilt angle that maximizes the signal receiving power of the user equipment to be coordinated;
  • the calculation formula of the signal receiving power of the user equipment to be coordinated is:
  • N n ⁇ N/ 2 ;
  • N is the preset path number, which is the total number of channels between the user equipment of the cell to the user equipment in the service range of the cell, and ⁇ is the estimated cell day
  • G(9, ⁇ , + ⁇ (9) is an antenna gain set on the antenna for the user equipment to be coordinated with a downtilt angle but the user equipment to be coordinated is located at ⁇ 2 + ⁇ sweet;
  • the downtilt angle that can be used ranges from 13° to 90°, and the optimal downtilt angle for the user equipment to be coordinated on the antenna time-frequency resource block is 10°, if the time-frequency resource block is for the user equipment to be coordinated The downtilt angle is set to 10°. At this time, the signal receiving power of the user equipment to be coordinated will reach the maximum; however, considering the interference level to the neighboring cell when the downtilt angle is less than 13°, the method according to the method 1 is adopted.
  • the downtilt angle of 13 to 90° Traversing the downtilt angle of 13 to 90° to find the usable downtilt angle closest to the optimal downtilt angle of the antenna time-frequency resource block for the user equipment to be coordinated, that is, 13°, the local time-frequency resource of the antenna should be used.
  • the downtilt angle on the block for the user equipment to be coordinated is set to 13°.
  • Manner 3 traversing all available downtilt angles in the range of available downtilt angles, finding a usable downtilt angle that maximizes the signal leakage ratio, and targeting the time-frequency resource blocks on the antenna of the local cell to the to-be-coordinated
  • the downtilt angle of the user equipment is set to the maximum downtilt angle at which the signal-to-Leakage-and-Noise Ratio (SLNR) is maximized;
  • the SLNR on the time-frequency resource block of the antenna of the cell may be calculated according to the following formula: 1-celll k-celll
  • ⁇ ⁇ transmit power used when the user equipment for transmitting signals to be coordinated can be obtained through power measurement
  • target _ UE is the optimal downtilt angle of the user equipment to be coordinated (can be obtained from the optimal downtilt coordination information of the local cell antenna time-frequency resource block in the downlink down-angle coordination information for the user equipment;);
  • G(9 0 , e t get _ UE ) is a downtilt angle set by the time-frequency resource on the antenna of the cell for the user equipment to be coordinated, which is ⁇ . , but the antenna gain to be coordinated when the user equipment is located at 9 ⁇ _ ⁇ « (can be calculated by the existing method of calculating the antenna gain);
  • the PL user equipment m is the path loss of the user equipment to be coordinated to the local cell (can be estimated according to the D0A parameter using an existing estimation algorithm or measured by RSRP (Reference S i gna l Received Power) Get);
  • a k is a probability that the neighboring cell allocates the time-frequency resource block to the kth user equipment (can be obtained by the neighboring cell base station through statistics, and sent to the local cell base station through the X2 interface);
  • PL UEtcell1 is the path loss of the kth device to the local cell in the service range of the neighboring cell (measured by using RSRP (Reference S i gna l Received Power)); way 3, traversing available All available downtilt angles in the range of inclination, find the available downtilt angle when the sum of the signal to interference and noise ratios is maximized, and set the downtilt angle of the time-frequency resource block on the antenna of the cell to the user equipment to be coordinated to make the signal The downtilt angle that can be used when the sum of the noise ratios is maximum;
  • RSRP Reference S i gna l Received Power
  • the sum of the signal to interference and noise ratios on the time-frequency resource blocks of the antenna of the cell can be calculated according to the following formula, specifically, as follows:
  • ⁇ ⁇ (can be measured on the power) to transmit power at the user equipment transmitting a signal to be coordinated;
  • ⁇ ! is the downtilt angle of the user equipment to be coordinated in the service area of the cell on the time-frequency resource block of the cell antenna;
  • ⁇ 2 is the downtilt angle of the neighboring cell antenna on the time-frequency resource block for the user equipment to be coordinated in the service range of the neighboring cell, and it can be combined with the probability that the time-frequency resource blocks of the neighboring cell base station are allocated to different user equipments and the time-frequency of the neighboring cell antenna.
  • the resource block is obtained for the optimal downtilt information of the user equipment in the service area of the neighboring cell;
  • G(9!, e UE1 _ Cell1 ) is the downtilt angle set by the time-frequency resource on the antenna of the cell for the user equipment to be coordinated in the service range of the cell, but is located in the service area of the cell to be coordinated with the user equipment.
  • Antenna gain at ⁇ (calculated by the existing method of calculating the antenna gain);
  • PL UE1 _ celll be coordinated user equipment within the service range of a cell-based path loss of the cell (obtained can be estimated using the estimation algorithm according to the conventional cell using D0A parameters or RSRP (Reference S igna l Received Power , reference signal received Power) measured);
  • G(9 2 , e UE2 _ Cell2 ) is a down-tilt angle set by the time-frequency resource on the neighboring cell antenna for the user equipment to be coordinated in the service range of the neighboring cell is ⁇ 2 , but the user equipment to be coordinated in the service area of the neighboring cell is relative to
  • the antenna gain when the neighboring cell is located at e UE2 _ Cell2 can be calculated and calculated by using the existing method for calculating the antenna gain);
  • PL UE2 _ cell2 neighbor cell within a service range to be coordinated user equipment neighbor cell path loss (or can be derived using RSRP (Reference S igna l Received Power D0A The neighbor cell parameter estimation, Reference signal received power) measured);
  • RSRP Reference S igna l Received Power D0A The neighbor cell parameter estimation, Reference signal received power
  • G(9 2 , e UE1 _ Cell2 ) is that the down-tilt resource set on the neighboring cell antenna is set to ⁇ 2 for the user equipment to be coordinated in the service range of the cell, but the user equipment to be coordinated in the service range of the cell is relative to The antenna gain of the cell when it is located at e UE1 _ Cell2 (can be calculated and calculated by the existing method for calculating the antenna gain);
  • PL UE1 . cell2 is the path loss of the user equipment to the neighboring cell to be coordinated in the service range of the cell (can be estimated according to the DOA parameter of the cell or measured by RSRP (Reference S ignal Received Power));
  • G(Q e UE2 _ Cell1 ) is a downtilt angle set by the cell antenna time-frequency resource block for the user equipment to be coordinated in the service range of the neighboring cell to be ⁇ 1, but the user equipment to be coordinated in the service area of the neighboring cell is located relative to the local cell.
  • e Antenna gain at UE2 _ Celll can be calculated by the existing method of calculating the antenna gain);
  • PL UE2 _ celll neighbor cells to be coordinated user equipment in the serving cell according to the path loss (which may be in accordance with the estimated neighbor cell parameter D0A); it should be noted that the user equipment within the above range according to the present cell or services
  • the user equipment in the range of the neighboring cell refers to all or part of the user equipments in the service area of the cell, and all or part of the user equipments in the service range of the neighboring cell.
  • the technical solution for setting the downtilt angle of the time-frequency resource block on the antenna of the cell to the user equipment to be coordinated according to the down-tilt coordination information of the cell and the down-tilt coordination information of the neighboring cell is obtained by acquiring the down-tilt coordination information of the cell and the down-tilt coordination information of the neighboring cell.
  • the implementation is such that when the time-frequency resource block of the local cell antenna is set for the downtilt angle of the user equipment to be coordinated, the down-tilt coordination information of the local cell and the neighboring cell is referenced, and the signal receiving power of the user equipment in the service range of the cell is ensured. While the SINR experience, it avoids interference to user equipment within the service range of the neighboring cell.
  • an embodiment of the present invention provides a device for coordinating a downtilt angle, the device specifically The base station or the network node in the method embodiment is corresponding to the embodiment of the present invention, and the device includes: an obtaining module 301 and a setting module 302;
  • the obtaining module 301 is configured to obtain the downtilt angle coordination information of the local cell and the downtilt angle coordination information of the neighboring cell, and any downtilt angle coordination information of the downtilt angle coordination information of the cell and the downtilt angle coordination information of the neighboring cell includes: a time-frequency resource block on the cell antenna
  • the optimal downtilt information for the user equipment in the cell service range, the location information of the user equipment in the cell service range, the location information of the cell base station, the usage probability of the up and down angle of each time-frequency resource block on the cell antenna, and the time-frequency resources of the cell base station One or more of the probability that the block is allocated to the different user equipments and the downtilt angle used by the time-frequency resource blocks on the neighboring cell antennas;
  • the setting module 302 is configured to use the local cell down-tilt coordination information acquired by the obtaining module 301 And the neighboring cell downtilt coordination information sets a downtilt angle of the time-frequency resource block on
  • the obtaining module 301 includes:
  • a first obtaining unit configured to acquire a direction of arrival parameter of the user equipment in the service area of the cell, where the direction of the directional direction parameter includes at least a downtilt angle information of the user equipment of the cell time-frequency resource block of the local cell;
  • a determining unit configured to determine, according to the direction of arrival parameter obtained by the first acquiring unit, the optimal downtilt information of the time-frequency resource block on the antenna of the current cell for the user equipment in the service range of the local cell.
  • the first acquiring unit is specifically configured to: send, by using the pilot resource grids in the time-frequency resource block of the current cell resource block, channel state information reference signals of different directional direction parameters to the user equipment in the service range of the local cell, and receive The direction of arrival parameter corresponding to the reference signal whose signal received strength is greater than the preset threshold measured by the user equipment in the service area of the cell; or
  • the first acquiring unit is configured to send, by using a time division, a frequency division, or a code division manner, a pilot signal to the user equipment in the service range of the local cell in each pilot resource grid in the time-frequency resource block of the antenna of the cell, and receive the service of the community Precoding of the channel state estimated by the user equipment according to the reference signal, and rooting According to the precoding, the directional direction parameter of the user equipment in the service range of the cell is obtained; or the first acquiring unit is specifically configured to obtain the service range of the cell according to the uplink channel quality measurement reference signal reported by the user equipment in the service area of the cell. The direction of arrival parameter of the internal user equipment.
  • the obtaining module 301 further includes:
  • a second obtaining unit configured to obtain, according to an uplink channel quality measurement reference signal reported by the user equipment in the service area of the cell, a direction of arrival parameter of the user equipment in the service range of the local cell, where the direction of the arrival direction parameter includes at least the time-frequency resource of the antenna of the local cell
  • the block is configured for the downtilt information of the user equipment in the service area of the cell, and calculates the location information of the user equipment in the service scope of the community according to the direction of arrival parameter;
  • the third obtaining unit is configured to receive location information obtained by the user equipment in the service area of the local area according to a predetermined positioning technology.
  • a fourth acquiring unit configured to receive the downtilt information of the time-frequency resource block of the neighboring cell antenna reported by the user equipment served by the user equipment of the local cell, and the time-frequency resource block of the neighboring cell antenna is for the predetermined user equipment In the dip information, the downtilt angle used by the time-frequency resource block on the neighboring cell antenna is not recommended.
  • the receiving unit is configured to receive the neighboring cell downtilt coordination information sent by the neighboring cell.
  • a fifth acquiring unit configured to acquire a direction of arrival parameter of the user equipment in the service range of the neighboring cell, where the parameter of the direction of arrival includes at least a downtilt angle information of the user equipment of the neighboring cell antenna time-frequency resource block for the service area of the neighboring cell, and according to the wave
  • the directional parameter determines the optimal downtilt information of the time-frequency resource block on the neighboring cell antenna for the user equipment in the service range of the neighboring cell.
  • the fifth acquiring unit is specifically configured to send, according to each pilot resource grid in the time-frequency resource block on the antenna of the local cell, a channel state information reference signal of different directional direction parameters to the user equipment in the service range of the neighboring cell, and receive The direction of arrival parameter corresponding to the reference signal whose signal received strength is greater than the preset threshold measured by the user equipment in the service area of the neighboring cell; or
  • the fifth obtaining unit is specifically configured to use time division, frequency division or code division manner to time-frequency on the antenna of the local cell.
  • Each pilot resource cell in the resource block sends a reference signal to the user equipment in the service range of the neighboring cell, and receives the precoding of the channel state estimated by the user equipment according to the reference signal in the service range of the neighboring cell, and obtains the neighbor according to the precoding estimation.
  • the fifth obtaining unit is specifically configured to estimate, according to the uplink channel quality measurement reference signal reported by the user equipment in the service area of the neighboring cell, a direction of arrival direction of the user equipment in the service range of the neighboring cell antenna.
  • the setting module 302 includes:
  • a first determining unit configured to determine, according to the downlink downtilt coordination information of the cell and the downtilt angle coordination information of the neighboring cell, a range of downtilt angles that can be used by the time-frequency resource block on the antenna of the cell for the user equipment in the service range of the cell;
  • a setting unit configured to set, according to a preset rule, a downtilt angle of the time-frequency resource block on the antenna of the current cell for the user equipment to be coordinated according to the available downtilt range determined by the first determining unit.
  • the first determining unit is specifically configured to determine, according to the optimal downtilt information of the user equipment in the service range of the local cell, the time-frequency resource block on the antenna of the local cell according to the time-frequency resource block of the local cell in the down-tilt coordination information of the local cell.
  • the optimal downtilt range of the user equipment in the service range of the cell the downtilt angle range except the downtilt angle used by the neighboring cell in the neighboring cell downtilt information is taken as the current cell in the optimal downtilt range.
  • the time-frequency resource block on the antenna is applicable to a downtilt range that can be used by the user equipment in the service area of the cell; or
  • the first determining unit is configured to calculate, according to the neighboring cell base station location information in the neighbor cell coordination information, the base station base station location information in the cell coordination information, the distance between the base station and the neighboring cell base station, according to the spacing and the local
  • the vertical main beam width of the cell antenna is calculated according to the geometric relationship to obtain a downtilt range that can be used by the time-frequency resource block on the antenna of the cell for the user equipment in the service range of the cell; or
  • the first determining unit is specifically configured to determine, according to the optimal downtilt information of the user equipment in the service area of the local cell, the current time domain resource block in the local cell antenna in the downtilt coordination information of the local cell to determine the local cell.
  • the set of the down-tilt angles of the neighboring cells of the first threshold according to the location information of the neighboring cell base station and the location information of the base station of the local cell, calculate a set of downtilt angles of the geographic locations corresponding to the set of the downtilt angles of the neighboring cells.
  • the first determining unit is specifically configured to determine, according to the optimal downtilt information of the user equipment in the service area of the local cell, the time-frequency resource block on the antenna of the local cell according to the time-frequency resource block of the local cell in the down-tilt coordination information of the local cell.
  • the optimal downtilt range of the user equipment in the service range of the cell For the optimal downtilt range of the user equipment in the service range of the cell; according to the location information of the UE in the service range of the neighboring cell in the downtilt coordination information of the neighboring cell, and the location information of the base station of the cell, calculate the antenna of the cell for the The downtilt set C of the neighboring cell UE location information; or calculating the optimal under the optimal downtilt information of the user equipment in the neighboring cell service range and the location information of the neighboring cell base station according to the time-frequency resource block on the neighboring cell antenna
  • the tilt angle corresponds to the geographic location, and according to the optimal downtilt corresponding geographic location and the location information of the base station of the local cell, the downtilt set C of the local cell antenna for the geographic location corresponding to the optimal downtilt angle is calculated; a range of downtilt angles other than the downtilt angle in the set C in the range of inclination as a
  • the first determining unit is specifically configured to determine, according to the optimal downtilt information of the user equipment in the service area of the local cell, the time-frequency resource block on the antenna of the local cell according to the time-frequency resource block of the local cell in the down-tilt coordination information of the local cell.
  • the optimal downtilt range of the user equipment in the service range of the cell the probability of allocating the time-frequency resource blocks of the neighboring cell base station to the different user equipments in the neighboring cell downtilt coordination information, and searching for the allocated time-frequency resource blocks of the neighboring cells
  • the user equipment with a probability greater than the second threshold calculates a downtilt set D of the location information of the local cell antenna for the found UE according to the location information of the searched UE and the location information of the base station of the local cell; or Time-frequency resources based on neighboring cell antennas And calculating, according to the optimal downtilt information of the found UE and the location information of the neighboring cell base station, the geographic location corresponding to the optimal downtilt angle, and the location of the base station according to the optimal downtilt angle and the location of the base station of the local cell.
  • the upper time-frequency resource block is for a downtilt range that can be used by user equipment within the service range of the cell.
  • a setting unit configured to obtain an optimal downtilt information of the user equipment to be coordinated from the optimal downtilt information of the user equipment in the service area of the local cell from the time-frequency resource block of the local cell in the coordination information of the local cell, and traverse the information All available downtilt angles in the range of downtilt angles used to find the usable downtilt angle closest to the optimal downtilt angle of the user equipment to be coordinated, and the time-frequency resource blocks on the antenna of the cell are targeted to the user equipment to be coordinated.
  • the inclination angle is set to the usable downtilt angle closest to the optimal downtilt angle of the user equipment to be coordinated; or
  • the setting unit is specifically configured to traverse all available downtilt angles in the range of downtilt angles that can be used, find a usable downtilt angle that maximizes the signal receiving power of the user equipment to be coordinated, and use the time-frequency resource block on the antenna of the local cell.
  • the downtilt angle for the user equipment to be coordinated is set to a usable downtilt angle that maximizes the signal receiving power of the user equipment to be coordinated; or
  • the setting unit is specifically configured to traverse all available downtilt angles in the range of downtilt angles that can be used, find a usable downtilt angle that maximizes the signal leakage ratio, and set the time-frequency resource block on the antenna of the local cell to the user equipment to be coordinated.
  • the downtilt angle is set to the maximum available downtilt angle for the signal leakage ratio; or
  • the setting unit is specifically configured to traverse all available downtilt angles in the range of downtilt angles that can be used, find a usable downtilt angle when the sum of the signal to interference and noise ratios is maximized, and target the time-frequency resource block on the antenna of the local cell.
  • the downtilt angle of the coordinated user equipment is set to the usable downtilt angle when the sum of the signal to interference and noise ratios is maximized.
  • the device further includes: a coordination module 303;
  • the coordination module 303 includes: a classification unit, configured to classify user equipments in the service area of the local cell; a first coordinating unit, configured to allocate a time-frequency resource block to the user equipment to be coordinated on the antenna of the cell according to the frequency division multiplexing FFR scheduling principle or the soft frequency reuse SFR scheduling principle according to the classification information of the user equipment in the service scope of the cell ; or
  • a second coordinating unit configured to use the dynamic scheduling principle according to the custom dynamic scheduling principle according to the classification information of the user equipment in the service area of the cell and the usage probability of the up and down dip of each time-frequency resource block on the neighboring cell antenna in the neighbor cell coordination information
  • a time-frequency resource block is allocated on the antenna for the user equipment to be coordinated.
  • the classification unit is specifically configured to: according to the optimal downtilt information of the user equipment in the service area of the local cell according to the time-frequency resource block of the local cell in the downtilt coordination information of the cell, according to the preset allocation rule, the user in the service scope of the community Equipment is classified; or
  • the categorization unit is specifically configured to directly classify the user equipments in the service scope of the cell according to the location information of the user equipment in the service scope of the cell in the downtilt angle coordination information of the cell.
  • the technical solution for setting the downtilt angle of the time-frequency resource block on the antenna of the cell to the user equipment to be coordinated according to the down-tilt coordination information of the cell and the down-tilt coordination information of the neighboring cell is obtained by acquiring the down-tilt coordination information of the cell and the down-tilt coordination information of the neighboring cell.
  • the implementation is such that when the time-frequency resource block of the local cell antenna is set for the downtilt angle of the user equipment to be coordinated, the down-tilt coordination information of the local cell and the neighboring cell is referenced, and the signal receiving power of the user equipment in the service range of the cell is ensured. While the SINR experience, it avoids interference to user equipment within the service range of the neighboring cell.
  • a method for processing inter-cell interference comprising:
  • the downtilt angle coordination information of the local cell downtilt coordination information and the neighboring cell downtilt coordination information includes: an optimal downtilt information of a user equipment on a cell antenna for a cell service range, and a cell service range Location information of the internal user equipment, location information of the cell base station, usage probability of the up and down angle of each time-frequency resource block on the cell antenna, probability of each time-frequency resource block of the cell base station being allocated to different user equipments, and when not recommending the neighboring cell antenna One or more of the downtilts used by the frequency resource block.
  • obtaining the optimal downtilt information of the time-frequency resource block on the antenna of the local cell for the user equipment in the service range of the local cell includes:
  • the directional direction parameter includes at least a downtilt angle information of the user equipment antenna time-frequency resource block for the user equipment in the service range of the cell, and according to the direction of arrival parameter Determining the optimal downtilt information of the time-frequency resource block on the antenna of the local cell for the user equipment in the service range of the cell.
  • the obtaining a direction of arrival parameter of the user equipment in the service range of the cell comprises: receiving, by the user equipment, a channel state information reference signal of a different direction of arrival parameter, and receiving The direction of arrival parameter corresponding to the reference signal that is received by the user equipment in the service area of the cell and is received by the reference signal on the reference signal is greater than a preset threshold; or

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Abstract

本发明公开了一种协调下倾角的方法和装置，属于通信领域。方法包括：获取本小区下倾角协调信息和邻小区下倾角协调信息；根据所述本小区下倾角协调信息和所述邻小区下倾角协调信息设置本小区天线上时频资源块针对待协调用户设备的下倾角。在设置本小区天线上时频资源块针对待协调用户设备的下倾角时参考了本小区及邻小区的下倾角协调信息，保证了本小区服务范围内用户设备的信号接收功率及SINR体验的同时，避免对邻小区服务范围内用户设备的干扰。

Description

处理小区间千扰的方法及装置
本申请要求于 2011 年 06 月 09 日提交中国专利局、 申请号为 201110154192.8、 发明名称为"处理小区间干扰的方法及装置"的中国专利申请 的优先权， 其全部内容通过引用结合在本申请中。 技术领域
本发明涉及通信领域， 具体涉及一种处理小区间干扰的方法及装置。 背景技术
如图 1所示， 下倾角为天线垂直主束波的指向， 一般情况下， 当天线下倾 角对准 UE ( User equipment, 用户设备 )时， UE的信号接收功率及信号接收质 量将会最高。
目前， AAS ( Active Antenna System, 主动天线系统）具有毫秒级和子载 波级电调下倾角的能力， 可将天线每时频资源块上的下倾角对准目标 UE, 以 提升目标 UE的信号接收功率、 增强信号接收质量。
但是， 如图 2所示， 在 UE地理位置均匀分布的情况下， 多数 UE的俯仰角 小于每小区天线采用统一下倾角时所设定的下倾角，那么为了使天线在每时频 资源块上所设定的下倾角对准目标 UE, AAS系统所设定的下倾角将使每时频 资源块上的垂直波束进一步指向小区边缘。 这样， 在同频组网系统中， 将会导 致本小区对邻小区 UE的信号干扰功率上升， 进而影响各小区 UE的 SINR ( Signal-to-Interference Plus Noise Ratio, 信干噪比）体险。 发明内容
为了解决上述问题， 达到在保证本小区 UE的接收信号强度的同时， 避免 对邻小区 UE的干扰的目的，本发明实施例提供了一种处理小区间干扰的方法 及装置。 所述技术方案如下： 一种处理小区间干扰的方法， 所述方法包括：
获取本小区下倾角协调信息和邻小区下倾角协调信息；
根据所述本小区下倾角协调信息和所述邻小区下倾角协调信息设置本小 区天线上时频资源块针对待协调用户设备的下倾角；
所述本小区下倾角协调信息和所述邻小区下倾角协调信息的任一个下倾 角协调信息包括：小区天线上时频资源块针对小区服务范围内用户设备的最优 下倾角信息、 小区服务范围内用户设备的位置信息、 小区基站的位置信息、 小 区天线上各时频资源块上下倾角的使用概率、小区基站各时频资源块分配给不 同用户设备的概率和不推荐相邻小区天线上时频资源块使用的下倾角中的一 项或多项。
一种处理小区间干扰的装置， 所述装置包括： 获取模块和设置模块； 所述获取模块， 用于获取本小区下倾角协调信息和邻小区下倾角协调信 息，所述本小区下倾角协调信息和所述邻小区下倾角协调信息的任一个下倾角 协调信息包括：小区天线上时频资源块针对小区服务范围内用户设备的最优下 倾角信息、 小区服务范围内用户设备的位置信息、 小区基站的位置信息、 小区 天线上各时频资源块上下倾角的使用概率、小区基站各时频资源块分配给不同 用户设备的概率和不推荐相邻小区天线上时频资源块使用的下倾角中的一项 或多项；
所述设置模块，用于根据所述获取模块获取的本小区下倾角协调信息和邻 小区下倾角协调信息设置本小区天线上时频资源块针对待协调用户设备的下 倾角。
本发明实施例提供的技术方案带来的有益效果是：通过获取本小区下倾角 协调信息和邻小区下倾角协调信息，才艮据本小区下倾角协调信息和邻小区下倾 角协调信息设置本小区天线上时频资源块针对待协调用户设备的下倾角的技 术方案的实现，使得在设置本小区天线上时频资源块针对待协调用户设备的下 倾角时参考了本小区及邻小区的下倾角协调信息，保证了本小区服务范围内用 户设备的信号接收功率及 SINR体验的同时， 避免对邻小区服务范围内用户设 备的干扰。 附图说明
图 1是本发明背景技术中提供的天线下倾角示意图；
图 2是本发明背景技术中提供的 UE俯仰角示意图；
图 3是本发明实施例提供的一种处理小区间干扰的方法流程图；
图 4是本发明实施例提供的另一种处理小区间干扰的方法流程图； 图 5是本发明实施例提供的一种用户设备的 DOA示意图；
图 6是本发明实施例提供的一种测量三维预编码的方法示意图；
图 7是本发明实施例提供的一种用户设备发射不同的下行 CSI-RS示意图； 图 8是本发明实施例提供的一种下倾角集合计算方法示意图；
图 9是本发明实施例提供的一种处理小区间干扰的装置框图。 具体实施方式
为使本发明的目的、技术方案和优点更加清楚， 下面将结合附图对本发明 实施方式作进一步地详细描述。
参见图 3, 本发明实施例提供一种处理小区间干扰的方法， 该方法的执行 主体包括服务基站或网络节点等， 本发明实施例对此不做具体限制， 包括： 步骤 101: 获取本小区下倾角协调信息和邻小区下倾角协调信息； 步骤 102: 根据所述本小区下倾角协调信息和所述邻小区下倾角协调信息 设置本小区天线上时频资源块针对待协调用户设备的下倾角；
其中，所述本小区下倾角协调信息和所述邻小区下倾角协调信息的任一个 下倾角协调信息包括：小区天线上时频资源块针对小区服务范围内用户设备的 最优下倾角信息、小区服务范围内用户设备的位置信息、小区基站的位置信息、 小区天线上各时频资源块上下倾角的使用概率、小区基站各时频资源块分配给 不同用户设备的概率和不推荐相邻小区天线上时频资源块使用的下倾角中的 一项或多项。
通过获取本小区下倾角协调信息和邻小区下倾角协调信息，根据本小区下 倾角协调信息和邻小区下倾角协调信息设置本小区天线上时频资源块针对待 协调用户设备的下倾角的技术方案的实现，使得在设置本小区天线上时频资源 块针对待协调用户设备的下倾角时参考了本小区及邻小区的下倾角协调信息， 保证了本小区服务范围内用户设备的信号接收功率及 SINR体验的同时， 避免 对邻小区服务范围内用户设备的干扰。
下面， 具体介绍上述处理小区间干扰的方法， 该方法的执行主体包括服务 基站或网络节点等， 本发明实施例对此不做具体限制，本发明实施例以基站作 为方法的执行主体进行相关说明， 参见图 4, 具体方法如下：
步骤 201: 本小区基站获取本小区下倾角协调信息和邻小区下倾角协调信 其中，本小区下倾角协调信息和邻小区下倾角协调信息的任一个下倾角协 调信息包括：小区天线上时频资源块针对小区服务范围内用户设备的最优下倾 角信息、 小区服务范围内用户设备的位置信息、 小区基站的位置信息、 小区天 线上各时频资源块上下倾角的使用概率、小区基站各时频资源块分配给不同用 户设备的概率和不推荐相邻小区天线上时频资源块使用的下倾角中的一项或 多项。
具体地， 本步骤具体包括如下操作：
步骤 201-1: 本小区基站获取本小区下倾角协调信息， 其中， 本小区下倾 角协调信息包括：本小区下倾角协调信息和邻小区下倾角协调信息的任一个下 倾角协调信息包括：本小区天线上时频资源块针对小区服务范围内用户设备的 最优下倾角信息、本小区服务范围内用户设备的位置信息、本小区基站的位置 信息、本小区天线上各时频资源块上下倾角的使用概率、本小区基站各时频资 源块分配给不同用户设备的概率和不推荐相邻小区天线上时频资源块使用的 下倾角中的一项或多项。
其中，本小区基站获取本小区天线上时频资源块针对本小区服务范围内用 户设备的最优下倾角信息包括如下操作：
步骤 201-1-1:本小区基站获取本小区天线服务范围内用户设备的 DOA(波 达方向）信息参数， 其中， DOA参数至少包括本小区天线时频资源块针对本 小区服务范围内用户设备的下倾角信息， 本发明实施例中， DO A参数还可以 包括本小区天线时频资源块针对本小区服务范围内用户设备的方位角信息； 参见图 5, 为用户设备 的 DOA (波达方向）示意图， 方位角是指来波方 向投影到水平面上与本小区天线正侧视方向的夹角， 和下倾角的概念一样， 均 描述小区的覆盖范围， 图中的阵列是指基站上天线阵列。
可以通过如下三种方式之一来获取用户设备的 DOA信息：
方式一、根据本小区服务范围内用户设备上报的上行信道质量测量参考信 号估计得到所述本小区服务范围内用户设备的波达方向参数；
具体地， 本小区基站采用通用的 DOA算法对本小区服务范围内用户设备 上报（如用户设备定时主动上报或接收到基站所配置的信令后上报） 的上行 SRS ( Sounding reference signal, 上行信道质量测量参考信号）进行估计， 得 到本小区范围内用户设备的 DOA参数； 其中， DOA算法包括 Capon算法、 Music(Multiple Signal Classification, 多信号分类）算法等， 本发明实施例对此 不做具体限定。
这里， 筒单的介绍一下 DOA算法的原理， 本小区基站上天线的信号接收 阵列对接收到的本小区服务范围内用户设备上报的上行 SRS进行阵列响应的 估计， 然后用不同 DOA对应的阵列响应与估计到的阵列响应做相关度扫描， 从而获得与 SRS相关度高于预设阈值的 DOA参数； 例如， 当 DOA参数为本 小区天线时频资源块针对本小区服务范围内用户设备的下倾角信息时，在垂直 方向上信号接收阵列在 0° 到 180° 之间对接收到的 SRS进行相关度扫描， 采 用 Capon算法得到 10。 到 15。 之间 SRS的信号接收强度均高于预设阈值，则 认为本小区天线时频资源块针对本小区服务范围内用户设备的下倾角在 10° 到 15。 之间， 当 DOA参数为本小区天线时频资源块针对本小区服务范围内用 户设备的方位角信息时， 在水平方向上信号接收阵列在 0° 到 360° 之间对接 收到的 SRS进行相关度扫描， 采样 Capon算法得到在 85。 到 95。 之间 SRS 的信号接收强度均高于预设值，则认为小区天线时频资源块针对本小区服务范 围内用户设备的方位角在 85。 到 95° 之间。 围内用户设备发送不同波达方向参数的信道状态信息参考信号，并接收本小区 服务范围内用户设备反馈的在参考信号上测量得到的信号接收强度大于预设 阈值的参考信号所对应的波达方向参数；
具体地， 参见图 6, 本小区基站向本小区服务范围内的用户设备发射不同 的下行 CSI-RS ( Channel state information reference signal, 信道状态信息参考 信号）， 其中， 每个 CSI-RS均采用不同的 DOA参数； 用户设备接收 CSI-RS 并测量 CSI-RS的信号接收强度， 将测量得到的信号接收强度中大于预设值的 CSI-RS对应的 DOA参数返回给本小区基站；本小区基站接收用户设备反馈的 DOA参数。
例如， 当 DOA参数为本小区天线时频资源块针对本小区服务范围内用户 设备的下倾角信息和本小区天线时频资源块针对本小区服务范围内用户设备 的方位角信息时， 本小区基站向本小区服务范围内的用户设备发射 DOA参数 分别为 Γ /6。 、 3° /8。 、 5。 /8。 和 6° /10° 的 CSI-RS; 用户设备接收并测 量在上述 DOA参数下的 CSI-RS信号接收强度， 如分别为 48%、 89%、 60%和 40%; 用户设备可将信号接收强度大于 50%的 CSI-RS对应的 DOA参数 3。 /8° 、 5° /8° 返回给本小区基站。
在实际操作中， 用户设备在测量得到 DOA信息后， 可采用索引编号方式 对 DOA进行编号， 并将 DOA的索引编号返回给本小区基站， 而当用户设备 需反馈多个 DOA给本小区基站时， 用户设备可将多个 DOA的索引编号用现 有的差分方式上报给本小区基站； 本小区基站在接收到用户设备返回的 DOA 的索引编号后， 根据预先存储的索引编号与 DOA信息的对应关系表查找获得 DOA信息。
方式三、采用时分、频分或码分方式在本小区天线上时频资源块内的各导 频资源格上向本小区服务范围内用户设备发送参考信号，接收所述本小区服务 范围内用户设备根据所述参考信号估计得到的信道状态的预编码，并根据所述 预编码估计得出所述本小区服务范围内用户设备的波达方向参数；
具体地， 参见图 7, 基站分别采用时分、 频分或码分方式通过本小区天线 上时频资源块内的导频资源格向本小区天线服务范围内用户设备发送参考信 号； 用户设备接收各参考信号， 并根据各参考信息估计得到各导频资源格对应 的信道的信道状态， 得到 N^M维的信道矩阵， 并根据信道矩阵得到推荐发射 端使用的预编码， 其中， Nr为用户设备端接收天线数， M为基站天线上时频 资源块内的导频资源格的数量；基站接收用户设备反馈的预编码， 并根据该预 编码解码得出用户设备的 DOA参数；
其中，图 7中的每一个方格均代表本小区天线上时频资源块内的一个导频 资源格；
这里以天线阵列端口数为 8为例筒单介绍一下， 频分发送方式： 在同一时 刻不同的频点上通过本小区天线上时频资源块内的导频资源格向本小区天线 服务范围内用户设备发送的参考信号， 具体如图 7中的 （a )所示的方式， 时 频资源块内的导频资源格有 8个，每四个导频资源格占用一个频点（有阴影部 分和无阴影部分分别代表一个频点）， 在同一时刻， 分别在两个频点上通过这 八个导频资源格向本小区天线服务范围内用户设备发送 8个端口的参考信号， 如（a ) 中的第一列和第二列所示， 给出了两个时刻采用频分发送方式发送参 考信息的示意图；
时分发送方式： 在同一频点上的不同时刻，通过本小区天线上时频资源块 内的导频资源格向本小区天线服务范围内用户设备发送的参考信号，具体如图 7中的（b )所示的方式， 时频资源块内的导频资源格有 8个， 每 4个一组在 2 个频点上， 8个阵列端口的导频信号通过同一个频点、 2个不同时刻的 8个导 频资源格发送， 如（b ) 中的第一行和第二行所示， 给出了同一频点的两个不 同时刻发送参考信息的示意图；
码分发送方式： 在同一时刻同一频点上，通过本小区天线上时频资源块内 的导频资源格向本小区天线服务范围内用户设备发送的参考信号，以图 7中 (c) 所示为例， 时频资源块内的导频资源格有 8个， 阵列端口共 8个分为 2组， 每 组含 4个端口。 组 1中第 n个端口（n=l,2,3,4)的导频信号乘以长度为 2的序列 (记作 a ), 放置在 8个导频资源格的某两个资源格中 （这两个资源格记作 8 个资源格中的第 n组）， 组 2中第 n个端口的导频信号乘以另一长度为 2的序 列（记作 b , a与 b正交）， 放置在与组 1第 n个端口的导频信号放置位置相同 的第 n组导频资源格中， 具体如图 7中的 （c )所示的方式；
在实际操作中， 用户设备在得到预编码后，将该预编码采用索引编号方式 进行编号， 并将预编码的索引编号返回给基站；基站则根据接收到的预编码的 索引编号查找预先存储的索引编号与预编码的对应关系表得到预编码； 若 DOA参数包括本小区天线时频资源块针对本小区服务范围内用户设备的下倾 角信息和方位角信息，且所述下倾角和方位角信息是可分的， 则可将下倾角和 方位角信息分别量化，表示为索引编号， 然后将索引编号分开或联合上报给基 站， 若下倾角和方位角信息不可分， 则将预编码统一量化后， 将对应的索引编 号上报给基站。 另外， 需要说明的是，在采用方式二或方式三所述的方法获取用户设备的 DOA参数时，基站需要事先配置信令流程，以通知用户设备去准备进行 CSI-RS 或导频的测量并在要求的时间内反馈测量信息。
例如，通过上述方式之一获取的本小区天线时频资源块针对本小区服务范 围内用户设备的下倾角信息及在该下倾角下的信号接收强度如表 1所示； 表 1 小区
UE 小区天线时频资源 信号接收强度
块针对 UE的下倾角
信息
1° 89%
3° 70%
5。 55%
8° 43%
12。 32%
15。 12%
2° 25%
5。 40%
UE2 7° 60%
10。 73%
13。 80%
14。 90%
4° 13%
UE3 5。 35%
7° 53%
9° 88%
11。 80%
15。 65% 本发明实施例在获取用户设备的 DOA参数后，便可以根据该获取的 DOA 参数对天线针对服务范围内用户设备的下倾角或 /和方位角进行一些处理， 使 得用户设备可以更好的接收信号， 本发明实施例将重点讲述如何根据获取的 DOA参数中的下倾角信息来设置天线上时频资源块针对待协调用户设备的下 倾角的方法， 有关如何根据获取的 DOA参数中的方位角信息对天线针对服务 范围内用户设备的方位角进行处理的方法与此类似， 不再赘述。
步骤 201-1-2: 本小区基站根据波达方向参数确定本小区天线上时频资源 块针对本小区服务范围内用户设备的最优下倾角信息；
具体地，根据获取的波达方向参数中的本小区天线时频资源块针对本小区 服务范围内用户设备的下倾角信息及所述下倾角信息对应的信号接收强度来 定义小区天线上时频资源块针对服务范围内用户设备的最优下倾角， 包括： 从获取的波达方向参数中的本小区天线时频资源块针对本小区服务范围 内用户设备的下倾角信息中，选出其中针对用户设备时使得用户设备在接收基 站所发送的信号时信号接收强度最大的一个下倾角，作为天线上时频资源块上 针对服务范围内用户设备的最优下倾角；
根据表 1的内容可以知道，本小区天线上时频资源块针对服务范围内用户 设备的最优下倾角如表 2所示：
表 2
Figure imgf000012_0001
其中，本小区基站获取本小区服务范围内用户设备的位置信息可以通过如 下两种方式之一来获取：
方式一、根据本小区服务范围内用户设备上报的上行信道质量测量参考信 号估计得到本小区服务范围内用户设备的波达方向参数， 其中， 波达方向参数 至少包括本小区天线时频资源块针对小区服务范围内用户设备的下倾角信息， 并根据波达方向参数计算得出本小区服务范围内用户设备的位置信息；
具体地， 参见图 1 , 根据本小区天线时频资源块针对用户设备的下倾角信 息按照几何三角函数公式即可计算得出用户设备的位置；
方式二、接收本小区服务范围内用户设备根据预定定位技术定位得到的位 置信息；
具体地， 用户设备在接收到本小区基站发送的获取其位置信息的指令后， 按照预定定位技术将定位自身得到的位置信息返回给本小区基站， 其中，预定 定位技术包括 GPS定位、 DOA定位或者 TDOA定位等定位技术；
其中， 本小区基站获取小区天线上各时频资源块上下倾角的使用概率包 本小区天线上各时频资源块上下倾角的使用概率；
其中，本小区基站获取本小区不推荐相邻小区天线上时频资源块使用的下 倾角具体为：接收至少一个本小区服务的用户设备上报的邻小区天线上时频资 源块针对预定用户设备的下倾角信息，从邻小区天线上时频资源块针对预定用 户设备的下倾角信息中选出本小区不推荐相邻小区天线上时频资源块使用的 下倾角。
例如， 位于本小区和邻小区重叠覆盖区域内的由本小区提供服务的 UE1 , 在邻小区天线时频资源块上针对该 UE1的下倾角为 2。 时， UE1接收邻小区 发送的信号的接收强度为 35%, 则说明 UE1收到邻小区的干扰较强， 故， 本 小区不推荐相邻小区使用下倾角为 2° 以下的下倾角。
步骤 201-2: 本小区基站获取邻小区下倾角协调信息， 其中， 邻小区下倾 角协调信息包括：邻小区天线上时频资源块针对小区服务范围内用户设备的最 优下倾角信息、邻小区服务范围内用户设备的位置信息、邻小区基站的位置信 息、邻小区天线上各时频资源块上下倾角的使用概率、邻小区基站各时频资源 块分配给不同用户设备的概率和不推荐相邻小区天线上时频资源块使用的下 倾角中的一项或多项；
具体地， 本小区基站接收邻小区基站所发送的邻小区下倾角协调信息， 其 中，邻小区下倾角协调信息是邻小区基站采用上述步骤 201-1所述的方法获取 的， 此处就不再赘述：
在具体实现时，本小区基站通过预定接口接收邻小区基站发送的邻小区下 倾角协调信息， 可选的，也可以向邻小区基站发送上述得到的本小区下倾角协 调信息， 其中， 预定接口可以是相邻两基站间的 X2接口；
另夕卜，还需要说明的是， 本小区基站获取邻小区下倾角协调信息包括邻小 区的不推荐相邻小区天线上时频资源块使用的下倾角时，还可以通过下述方法 来实现：
获取邻小区服务范围内用户设备的波达方向参数，所述波达方向参数至少 包括本小区天线时频资源块针对邻小区服务范围内用户设备的下倾角信息，并 根据所述波达方向参数确定邻小区的不推荐相邻小区天线上时频资源块使用 的下倾角。
其中， 获取邻 ' j、区服务范围内用户设备的波达方向参数包括：
在本小区天线上时频资源块内的各导频资源格上向邻小区服务范围内用 户设备发送不同波达方向参数的信道状态信息参考信号，并接收邻小区服务范 围内用户设备反馈的在参考信号上测量得到的信号接收强度大于预设阈值的 参考信号所对应的波达方向参数； 其中， 具体实现时， 邻小区服务范围内用户 设备可以预先从本小区的基站获取本小区的参考信号的相关信息，所述用户设 备在测量后反馈的波达方向参数可以直接发送给所述本小区的基站，也可以发 送给服务所述用户设备的邻小区的基站，由邻小区的基站通过与所述本小区的 基站间的接口向所述本小区的基站转发所述波达方向参数。 或者
采用时分、频分或码分方式在本小区天线上时频资源块内的各导频资源格 上向邻小区服务范围内用户设备发送参考信号，接收邻小区服务范围内用户设 备根据参考信号估计得到的信道状态的预编码，并根据预编码估计得出邻小区 服务范围内用户设备的波达方向参数； 其中， 具体实现时， 邻小区服务范围内 用户设备可以预先从本小区的基站获取本小区的参考信号的相关信息，所述用 户设备在测量后反馈的信道状态的预编码可以直接发送给所述本小区的基站， 也可以发送给服务所述用户设备的邻小区的基站，由邻小区的基站通过与所述 本小区的基站间的接口向所述本小区的基站转发所述信道状态的预编码。或者 根据邻小区天线服务范围内用户设备上报的上行信道质量测量参考信号 估计得到邻小区天线服务范围内用户设备的波达方向参数。其中，具体实现时， 本小区基站可以在测量参考信号前，根据邻小区基站通过显示的或隐式通知的 信息获取邻小区天线服务范围内用户设备上报的上行信道质量测量参考信号 所使用的序列。
有关上述方法的详细说明请参见步骤 201-1-1中的相关说明， 此处就不再 赘述。
可选的， 步骤 202: 本小区基站根据本小区下倾角协调信息在本小区天线 上为待协调用户设备分配时频资源块；
具体通过如下三种方式在本小区天线上为待协调用户设备分配时频资源 块：
方式一、对本小区服务范围内用户设备进行分类，根据本小区服务范围内 用户设备的分类信息按照 FFR ( Fractional Frequency Reuse, 部分频率复用 ) 调度原则在本小区天线上为所述待协调用户设备分配时频资源块；
具体包括： 步骤 202-1A: 对本小区服务范围内的用户设备进行位置分类， 得到小区 服务范围内用户设备的位置分类信息；
可以通过如下两种方式之一来对本小区服务范围内的用户设备进行位置 分类：
方式一、才艮据本小区下倾角协调信息中的本小区天线上时频资源块针对本 小区服务范围内用户设备的最优下倾角信息按照预设分配规则对本小区服务 范围内用户设备进行分类；
具体地，将用户设备最优下倾角落入第一预设范围内的用户设备作为第一 类用户设备，将用户设备最优下倾角落入第二预设范围内的用户设备作为第二 类用户设备，将用户设备最优下倾角落入第三预设范围内的用户设备作为第三 类用户设备等等。 例如， 将用户设备最优下倾角落入 Γ 至 5° 范围内的用户 设备作为第一类用户设备， 称其为小区边缘地带用户设备； 将用户设备最优下 倾角落入 6° 至 10。 范围内的用户设备作为第二类用户设备，称其为小区中间 地带用户设备； 将用户设备最优下倾角落入 11。 至 15。 范围内的用户设备作 为第三类用户设备， 称其为小区中心地带用户设备。
分类后的用户设备可以用集合
Figure imgf000016_0001
ΘΧ }来表示， 其中， χ 表示天线上时频资源块上针对用户设备的下倾角区间段下标 （ " center" , "outer" , "edge" ), "center"、 "outer" 和 "edge" 分别表示小区中间地带、 小 区中间地带和小区边缘地带， foe(ue是 11 的最优下倾角， 05^是 地带对应的 角度区间段， 如上例中06 ={911。≤9≤5。} , Θ0 ={ΘΙ6。≤θ≤10ο}， 0edge={9lll °≤θ≤150}。
例如， 由表 2可以得出， UEi 属于小 UEedge; UE3 属于 UE。uter； UE2属 "ί" UEcenter。
方式二、根据本小区下倾角协调信息中的本小区服务范围内用户设备的位 置信息直接对本小区服务范围内用户设备进行分类。 步骤 202-2A: 根据本小区服务范围内用户设备的位置分类信息， 取出本 小区服务范围内协调迫切度较大的一类用户设备， 记作集合 Uedgej;
由图 2可以看出，通常情况下，当垂直向波束指向小区边缘地带的 UE时， 其对邻小区的干扰程度要高于小区中间地带或小区中心地带的 UE, 即属于 UEedge的 UE的协调迫切度较大。 这里假设有 2个邻小区。 从 1号小区下倾角 协调信息中获取的属于 UE edge的 UE包括 U 、 UE5、 UE7, 记为 υ ^, 从 2 号小区下倾角协调信息中获取的属于 UE edge的 UE包括 UE10、 UE9、 UE60, 记 为 UedGE,2;
步骤 202-3A: 相邻的若干小区彼此划分出互不重叠的频段？^..^^, 如 1 号小区对应 F1 2号小区对应 F2, ... ... , L号小区对应 FL, 称为 1号小区的 协调频段；
步骤 202-4A: 将邻小区的 Uedg^分别划分在不同的协调频段上；
例如， 1号小区将
Figure imgf000017_0001
UE5, UE7}划分在频段 上， 2号小区 将
Figure imgf000017_0002
UE9, UE6。}划分在频段 F2上；
步骤 202-5A: 在所分配的频段上按照 PF ( Propotional fair, 比例公平 )优 先级的高低对用户设备进行时频资源的协调调度， 具体地，将时频资源分配给 在该时频资源上 PF优先级最高的用户设备；
例如： 1号小区在 上按照 PF优先级调度 Uedgej中的用户设备， 在时频 资源 RUi上 UE 的 PF优先级最高，则将 RUi分配给 U ,在 F2上调度除 Uedgej 中 UE的其他所服务 UE; 2号小区在 F2上按照 PF优先级调度 Uedge,2中的 UE, 在 上调度除 Uedge,2中用户设备的其他所服务用户设备。
本步骤将两邻小区上可能给对方造成较大干扰的设备分在了两个不同的 频段上， 避免了邻小区将同一时频资源分配给对邻小区干扰较大的用户设备， 可降低后续下倾角协调的难度。
方式二、对本小区服务范围内用户设备进行分类，根据本小区服务范围内 用户设备的分类信息按照 SFR ( Soft Frequency Reuse, 软频率复用 )调度原则 在本小区天线上为所述待协调用户设备分配时频资源块；
具体包括：
步骤 202-1B: 对本小区服务范围内的用户设备进行位置分类， 得到小区 服务范围内用户设备的位置分类信息；
本步骤的具体实现过程详见步骤 202-1A的说明， 此处就不再赘述。
步骤 202-2B: 根据本小区服务范围内用户设备的位置分类信息， 取出本 小区服务范围内协调迫切度较大的一类用户设备， 记作集合 Uedgej;
本步骤具体与步骤 202-2A—样， 此处就不再赘述。
步骤 202-3B: 相邻的若干小区彼此划分出互不重叠的频段F1,...,FL, 如 1 号小区对应 Fl 2号小区对应 F2, ... ... , L号小区对应 称为 1号小区的 协调频段；
步骤 202-4B : 1号小区的 Uedgej中的用户设备在划分的协调频段上具有高 优先级，所服务的其他用户设备在协调频段上具有低优先级， 1号小区的 Uedgej 中的用户设备在非协调频段上有低优先级，所服务的其他用户设备在非协调频 段上具有高优先级；
步骤 202-5B: 在所分配的频段上按照 PF ( Propotional fair, 比例公平 )优 先级的高低对用户设备进行时频资源的协调分配， 并调整用户设备的优先级； 具体地， 1小区在 上分配资源块时， 判断用户设备是否属于 Uedge 若 是， 则该用户设备的 PF优先级调整为
PF=(l+a)PFong
否则，
PF=(l-b)PFong
其中， PF。rigi。n是调整前根据 CQI ( Channel quality indicator , 信道质量 指示）和历史速率计算得到的 PF, a>l且 0<b<l;类似的， 1小区在除 的其他 频段分配资源块时， 判断用户设备是否属于 Uedgej, 若不是， 则该用户设备的 PF优先级调整为
PF=(l+c)PFong
否则， PF=(l-d)PFong
其中 c>l且 0<d<l ;
步骤 202-6B: 根据调整后的优先级为用户设备分配时频资源， 具体地， 将时频资源分配给在该时频资源上 PF优先级最高的用户设备；
方式三、对本小区服务范围内用户设备进行分类，根据本小区服务范围内 用户设备的分类信息及邻小区协调信息中的邻小区天线上各时频资源块上下 倾角的使用概率的情况按照自定义动态调度原则在本小区天线上为所述待协 调用户设备分配时频资源块；
其中， 有关对本小区服务范围内用户设备进行分类的方法请参数步骤
202-1A的描述， 此处就不再赘述。
其中， 根据自定义动态调度原则进行协调调度具体包括：
本小区在分配第 k个资源块给用户设备时参考邻小区下倾角协调信息，并 根据这些信息调整用户设备的优先级， 比如， 本小区根据邻小区下倾角协调信 息中的不推荐使用下倾角或下倾角使用概率确定协调准则， 一个优选准则是： 在同一资源块上：
1 )避免邻小区天线服务范围内的用户设备同属于各自小区的 Uedge集合；
2 )若该资源块上针对邻小区天线服务范围用户设备的下倾角 θ2属于集合
0edge, 则本小区将该资源块优先分配给 Ucento中的用户设备， 第二优先分配给 。∞中的用户设备；
3 )若该资源块上针对邻小区天线服务范围用户设备的下倾角 θ2属于集合 0coor, 则本小区将该资源块优先分配给 UC。OT中的用户设备， 第二优先分配给 ucenter中的用户设备， 第三优先分配给 uedge中的用户设备；
4 )若该资源块上针对邻小区天线服务范围用户设备的下倾角 θ2属于集合 0center, 则本小区将该资源块优先分配给 11∞∞中的用户设备， 第二优先分配给
Uedge中的用户设备， 第三优先分配给 Ucenter中的用户设备；
上述仅是本发明实施例提供的一种自定义动态调度原则，凡在本发明的精 神和原则之内， 对该自定义动态调度原则的任何修改、 等同替换、 改进等， 均 应包含在本发明的保护范围之内；
需要说明的是， 步骤 202为可选步骤； 该步骤通过资源分配尽可能保证邻 小区在同一资源块上针对用户设备的下倾角在等于针对用户设备的最优下倾 角时， 垂直波束不碰撞， 减小后续下倾角协调的难度；
步骤 203: 根据本小区下倾角协调信息和邻小区下倾角协调信息设置本小 区天线上时频资源块针对待协调用户设备的下倾角；
本步骤具体包括如下操作：
步骤 203-1: 根据本小区下倾角协调信息和邻小区下倾角协调信息确定本 小区天线上时频资源块针对本小区服务范围内用户设备可使用的下倾角范围； 根据本小区下倾角协调信息和邻小区下倾角协调信息确定本小区天线上 时频资源块针对本小区服务范围内用户设备可使用的下倾角范围可以包括： 根据本小区下倾角协调信息中的本小区天线上时频资源块针对本小区服 务范围内用户设备的最优下倾角信息确定本小区天线上时频资源块针对本小 区服务范围内用户设备的最优下倾角范围，取所述最优下倾角范围内除所述邻 小区下倾角信息中不推荐相邻小区使用的下倾角外的下倾角范围作为本小区 天线上时频资源块针对本小区服务范围内用户设备可使用的下倾角范围；
例如，由表 2可知，本小区服务范围内用户设备 UE1的最优下倾角为 1。 、 UE2的最优下倾角为 14。 、 UE3的最优下倾角为 9度， 则可以设定本小区天 线时频资源块针对本小区服务范围内用户设备的最优下倾角范围为 1 ° 到 14° ,接收邻小区基站所发送过来的邻小区下倾角协调信息中某时频资源块上 的不推荐相邻小区使用的下倾角为 4° , 则将本小区天线在该时频资源块针对 本小区服务范围内用户设备的可使用下倾角范围为 4。 至 14。 ；
或根据本小区下倾角协调信息和邻小区下倾角协调信息确定本小区天线 上时频资源块针对本 d、区服务范围内用户设备可使用的下倾角范围可以包括： 根据本小区下倾角协调信息中的本小区天线上时频资源块针对本小区服 务范围内用户设备的最优下倾角信息确定本小区天线上时频资源块针对本小 区服务范围内用户设备的最优下倾角范围；根据所述邻小区下倾角协调信息中 的邻小区天线在时频资源块上下倾角的使用概率，获取使用概率超过第一阈值 的邻小区下倾角组成的集合，根据邻小区基站的位置信息和本小区基站的位置 信息，计算出本小区天线针对所述邻小区下倾角组成的集合所对应地理位置的 下倾角集合 B,取所述最优下倾角范围内除所述集合 B中的下倾角外的下倾角 范围作为本小区天线上时频资源块针对本小区服务范围内用户设备可使用的 下倾角范围； 或者
根据本小区下倾角协调信息中的本小区天线上时频资源块针对本小区服 务范围内用户设备的最优下倾角信息确定本小区天线上时频资源块针对本小 区服务范围内用户设备的最优下倾角范围；根据邻小区下倾角协调信息中的邻 小区服务范围内 UE的位置信息， 及本小区基站的位置信息， 计算出本小区天 线针对所述邻小区 UE位置信息的下倾角集合 C; 或根据邻小区天线上时频资 源块针对邻小区服务范围内用户设备的最优下倾角信息及邻小区基站的位置 信息，计算出所述最优下倾角对应地理位置，根据所述最优下倾角对应地理位 置和本小区基站的位置信息，计算出本小区天线针对所述最优下倾角对应地理 位置的下倾角集合 C;取所述最优下倾角范围内除所述集合 C中的下倾角外的 下倾角范围作为本小区天线上时频资源块针对本小区服务范围内用户设备可 使用的下倾角范围； 或者 根据本小区下倾角协调信息中的本小区天线上时频资源块针对本小区服 务范围内用户设备的最优下倾角信息确定本小区天线上时频资源块针对本小 区服务范围内用户设备的最优下倾角范围；根据邻小区下倾角协调信息中的邻 小区基站各时频资源块分配给不同用户设备的概率，查找被分配邻小区时频资 源块的概率大于第二阈值的用户设备， 根据所述查找到的 UE的位置信息， 及 本小区基站的位置信息，计算出本小区天线针对所述查找到的 UE的位置信息 的下倾角集合 D; 或根据邻小区天线上时频资源块针对所述查找到的 UE的最 优下倾角信息及邻小区基站的位置信息， 计算出所述最优下倾角对应地理位 置，根据所述最优下倾角对应地理位置和本小区基站的位置信息，计算出本小 区天线针对所述最优下倾角对应地理位置的下倾角集合 D,取所述最优下倾角 范围内除所述集合 D 中的下倾角外的下倾角范围作为本小区天线上时频资源 块针对本小区服务范围内用户设备可使用的下倾角范围；
其中， 上述下倾角集合 B,C或 D可以为： 邻小区不推荐相邻小区天线上 时频资源块使用的下倾角，可以由邻小区基站获取后作为下倾角协调信息发送 给本小区基站， 也可以由本小区基站根据上述方法获取。
其中， 上述下倾角集合 B,C,D的计算方法可以参见图 8, 可以利用邻小区 下倾角集合中的下倾角及邻小区基站的位置信息，根据几何关系得到邻小区垂 直主波束指向的地理位置， 即邻小区下倾角集合对应的地理位置。可以利用本 小区基站的位置信息及所述邻小区下倾角集合对应的地理位置，根据几何关系 得到本小区天线的下倾角集合（例如 B,C或 D )。 当然， 也可以直接利用邻小 区服务的 UE的位置信息及本小区基站的位置信息，根据几何关系得到本小区 天线的下倾角集合（例如 B,C或 D )。
或根据本小区下倾角协调信息和邻小区下倾角协调信息确定本小区天线 上时频资源块针对本 d、区服务范围内用户设备可使用的下倾角范围可以包括： 根据邻小区协调信息中的邻小区基站位置信息与本小区协调信息中的本 小区基站位置信息计算得出本小区基站与邻小区基站间的间距，根据间距和本 小区天线垂直主束波宽度按照几何关系计算得出本小区天线上时频资源块针 对本小区服务范围内用户设备可使用的下倾角范围。
其中， 按照几何关系得出可使用的下倾角范围的一个例子如下： 0valld,x
Figure imgf000023_0001
β ]
其中， Θν3Μ,χ 为本小区天线上时频资源块针对本小区服务范围内用户设备 可使用的下倾角范围， θΟΡ =arctan(b*H/D)-BW/c， BW为本小区天线垂直主束 波宽度， BW/2为主波束边界正好指向本小区基站与邻小区基站间的间距一半 时的天线时频资源块上的下倾角， H是基站高度与用户设备平均高度之差， D 是本小区基站与邻小区基站间的间距； 其中， a, b, c, β为正实数， 优选的， a 为 8, b为 2, c为 2, β为 90° 。
这里，本领域普通技术人员可以采用基本的技术知识和常用的技术手段获 得本小区天线垂直主束波宽度、 基站高度、 用户设备的平均高度等信息；
步骤 203-2: 根据可使用的下倾角范围按照预设规则设置本小区天线上时 频资源块针对待协调用户设备的下倾角；
具体地，本步骤可以通过如下四种方式来设置本小区天线上时频资源块针 对待协调用户设备的下倾角：
方式一、从本小区协调信息中的本小区天线上时频资源块针对本小区服务 范围内用户设备的最优下倾角信息中获取待协调用户设备的最优下倾角信息， 遍历可使用的下倾角范围内所有可使用的下倾角，找出最接近于待协调用户设 备的最优下倾角的可使用的下倾角，将本小区天线上时频资源块针对待协调用 户设备的下倾角设置为最接近于待协调用户设备的最优下倾角的可使用的下 倾角；
方式二、遍历可使用的下倾角范围内的所有可使用的下倾角，找出使待协 调用户设备的信号接收功率最大的可使用的下倾角，将本小区天线上时频资源 块针对待协调用户设备的下倾角设置为使待协调用户设备的信号接收功率最 大的可使用的下倾角；
其中， 待协调用户设备的信号接收功率的计算式为：
1 N/2
N n=-N/2 ； 其中， N为预设径数， 该经数是指本小 区天线到本小区服务范围内用户设备间的信道总数， ηΔ 为估计得出的小区天
G(9, θ,+ ηΔ(9)在天线上为待协调用户设备设定的下倾角为 Θ但待协调用户设备 位于 θ2+ ηΔ甜的天线增益；
本领域的普通技术人员可以根据基本技术常识来计算得到上述公式中的 天线增益。
例如， 可使用的下倾角范围为 13° 至 90° , 而天线时频资源块上针对待 协调用户设备的最优下倾角为 10° , 如果将该时频资源块上针对待协调用户 设备的下倾角设定为 10° , 此时， 待协调用户设备的信号接收功率将达到最 大； 但是， 考虑到下倾角小于 13° 时对邻小区的干扰水平增强， 那么， 按照 方法一所述的方法， 遍历 13至 90° 的下倾角， 找出最接近于天线时频资源块 针对待协调用户设备的最优下倾角的可使用的下倾角， 即 13° , 则应将本小 区天线时频资源块上针对待协调用户设备的下倾角置为 13° 。 虽然此时该用 户设备不能达到最大信号接收功率，但是减小了对邻小区的干扰，对全系统提 升 SINR体验是有利的；
方式三、遍历所述可使用的下倾角范围内的所有可使用的下倾角，找到使 所述信号泄漏比最大的可使用的下倾角，将本小区天线上时频资源块针对所述 待协调 用 户 设备的 下倾 角 设置 为 所述使所述信号 泄漏 比 ( Signal-to-Leakage-and-Noise Ratio , SLNR )最大的可使用的下倾角；
其中， 可以按照下述公式计算得到本小区天线时频资源块上的 SLNR: 1-celll k-celll
k=l
还可以利用现有技术中的其它方法计算得到上述 SLNR, 此处不再赘述。 其中， Ρτ为待协调用户设备发射信号时的发射功率（可以通功率测量的 得到）；
Θ。为本小区天线时频资源块上针对待协调用户设备的下倾角；
6target_UE为待协调用户设备的最优下倾角 （可以由本小区下倾角协调信息 中的本小区天线时频资源块针对用户设备的最优下倾角协调信息中获取；)；
G(90, et get_UE)为本小区天线上时频资源针对待协调用户设备所设定的下 倾角为 θ。，但待协调用户设备位于9^^_^«备时的天线增益（可以采用现有的计 算天线增益的方法计算计算得到）；
PL用户设备 m为待协调用户设备到本小区的路损 （可以根据 D0A参数采用 现有的估计算法进行估计得到或者采用 RSRP ( Ref erence S i gna l Rece i ved Power , 参考信号接收功率）测量得到）；
ak为邻小区给出的将时频资源块分配给第 k个用户设备的概率（可以由邻 小区基站通过统计得出， 并通过 X2接口发送给本小区基站）；
PLUEtcelll为邻小区服务范围内第 k个设备到本小区的路损 （采用 RSRP ( Ref erence S i gna l Rece i ved Power , 参考信号接收功率）测量得到）； 方式三、遍历可使用的下倾角范围内的所有可使用的下倾角，找到使信干 噪比之和最大时的可使用的下倾角，将本小区天线上时频资源块针对待协调用 户设备的下倾角设置为使信干噪比之和最大时的可使用的下倾角；
其中，可以按照下述公式计算得到本小区天线时频资源块上的信干噪比之 和, 具体地, 如下：
^TG(61, eijE1_∞m)PLfjE1_∞m PTG(^2, ^UE2_CELL2)PLUE2_CELL2
PT G ( ^2 , ^ ^ j J ) P 1-£；6112 PTG(^2 , ^υΕ2-∞111 )PLUE 2— cell 1 还可以利用现有技术中的其它方法计算得到上述信干噪比之和，此处不再 赘述。
该表达式给出了相邻两个小区是如何计算得到信干噪比之和，若干个邻小 区计算之间信干噪比之和的方法与此相同：
其中， Ρτ为待协调用户设备发射信号时的发射功率 （可以通功率测量得 到）；
θ!为本小区天线时频资源块上针对本小区服务范围内待协调用户设备的 下倾角；
θ2为邻小区天线时频资源块上针对邻小区服务范围内待协调用户设备的 下倾角，它可以结合邻小区基站各时频资源块分配给不同用户设备的概率和邻 小区天线上时频资源块针对邻小区服务范围内用户设备的最优下倾角信息得 到；
G(9!, eUE1_Celll)为本小区天线上时频资源针对本小区服务范围内待协调用 户设备所设定的下倾角为 但对本小区服务范围内待协调用户设备相对于本 小区位于 θυ^α^时的天线增益（可以采用现有的计算天线增益的方法计算得 到）；
PLUE1_celll为本小区服务范围内待协调用户设备到本小区的路损 (可以根据 本小区 D0A参数采用现有的估计算法进行估计得到或者采用 RSRP ( Reference S igna l Received Power , 参考信号接收功率）测量得到）；
G(92, eUE2_Cell2)为邻小区天线上时频资源针对邻小区服务范围内待协调用 户设备所设定的下倾角为 θ2，但邻小区服务范围内待协调用户设备相对于邻小 区位于 eUE2_Cell2时的天线增益（可以采用现有的计算天线增益的方法计算计算 得到）；
PLUE2_cell2为邻小区服务范围内待协调用户设备到邻小区的路损 (可以根据 邻小区 D0A参数估计得出或者采用 RSRP ( Reference S igna l Received Power , 参考信号接收功率） 测量得到）；
G(92, eUE1_Cell2)为邻小区天线上时频资源针对本小区服务范围内待协调用 户设备所设定的下倾角为 Θ2，但本小区服务范围内待协调用户设备相对于本小 区位于 eUE1_Cell2时的天线增益（可以采用现有的计算天线增益的方法计算计算 得到）；
PLUE1.cell2为本小区服务范围内待协调用户设备到邻小区的路损 (可以根据 本小区 D0A 参数进行估计得到或者采用 RSRP ( Reference S igna l Received Power , 参考信号接收功率）测量得到）；
G(Q eUE2_Celll)为本小区天线时频资源块针对邻小区服务范围内待协调用 户设备所设定的下倾角为 Θ1，但邻小区服务范围内待协调用户设备相对于本小 区位于 eUE2_Celll时的天线增益（可以采用现有的计算天线增益的方法计算计算 得到）；
PLUE2_celll为邻小区服务范围内待协调用户设备到本小区的路损（可以根据 邻小区 D0A参数进行估计得到）； 需要说明的是， 以上所述的本小区服务范围 内的用户设备或者邻小区范围内的用户设备是指：本小区服务范围内的全部或 部分用户设备，邻小区服务范围内的全部或部分用户设备， 这里的部分用户设 备是指本小区服务范围内或者邻小区服务范围内需要进行协调的用户设备、移 动的用户设备或者按照其他规则所定义的用户设备。
通过获取本小区下倾角协调信息和邻小区下倾角协调信息，根据本小区下 倾角协调信息和邻小区下倾角协调信息设置本小区天线上时频资源块针对待 协调用户设备的下倾角的技术方案的实现，使得在设置本小区天线上时频资源 块针对待协调用户设备的下倾角时参考了本小区及邻小区的下倾角协调信息， 保证了本小区服务范围内用户设备的信号接收功率及 SINR体验的同时， 避免 对邻小区服务范围内用户设备的干扰。
参见图 9, 本发明的实施例提供了一种协调下倾角的装置， 该装置具体与 方法实施例中的基站或网络节点相对应， 本发明实施例对此不做具体限制， 装 置包括： 获取模块 301和设置模块 302;
获取模块 301 , 用于获取本小区下倾角协调信息和邻小区下倾角协调信 息，本小区下倾角协调信息和邻小区下倾角协调信息的任一个下倾角协调信息 包括： 小区天线上时频资源块针对小区服务范围内用户设备的最优下倾角信 息、 小区服务范围内用户设备的位置信息、 小区基站的位置信息、 小区天线上 各时频资源块上下倾角的使用概率、小区基站各时频资源块分配给不同用户设 备的概率和不推荐相邻小区天线上时频资源块使用的下倾角中的一项或多项； 设置模块 302, 用于根据获取模块 301获取的本小区下倾角协调信息和邻 小区下倾角协调信息设置本小区天线上时频资源块针对待协调用户设备的下 倾角。
下面详细介绍上述模块的具体功能：
具体， 获取模块 301包括：
第一获取单元， 用于获取本小区服务范围内用户设备的波达方向参数， 波 达方向参数至少包括本小区天线时频资源块针对本小区服务范围内用户设备 的下倾角信息；
确定单元，用于根据第一获取单元获取的波达方向参数确定本小区天线上 时频资源块针对本小区服务范围内用户设备的最优下倾角信息。
其中， 第一获取单元， 具体用于在本小区天线上时频资源块内的各导频资 源格上向本小区服务范围内用户设备发送不同波达方向参数的信道状态信息 参考信号，并接收本小区服务范围内用户设备反馈的在参考信号上测量得到的 信号接收强度大于预设阈值的参考信号所对应的波达方向参数； 或者
第一获取单元， 具体用于采用时分、频分或码分方式在本小区天线上时频 资源块内的各导频资源格上向本小区服务范围内用户设备发送参考信号，接收 本小区服务范围内用户设备根据参考信号估计得到的信道状态的预编码，并根 据预编码估计得出本小区服务范围内用户设备的波达方向参数； 或者 第一获取单元，具体用于根据本小区服务范围内用户设备上报的上行信道 质量测量参考信号估计得到本小区服务范围内用户设备的波达方向参数。
具体地， 获取模块 301还包括：
第二获取单元，用于根据本小区服务范围内用户设备上报的上行信道质量 测量参考信号估计得到本小区服务范围内用户设备的波达方向参数，波达方向 参数至少包括本小区天线时频资源块针对小区服务范围内用户设备的下倾角 信息， 并根据波达方向参数计算得出本小区服务范围内用户设备的位置信息； 或者
第三获取单元，用于接收本小区服务范围内用户设备根据预定定位技术定 位得到的位置信息。
第四获取单元，用于接收至少一个本小区服务的用户设备上报的邻小区天 线上时频资源块针对预定用户设备的下倾角信息，从邻小区天线上时频资源块 针对预定用户设备的下倾角信息中选出本小区不推荐相邻小区天线上时频资 源块使用的下倾角。
接收单元， 用于接收邻小区发送的邻小区下倾角协调信息。
第五获取单元， 用于获取邻小区服务范围内用户设备的波达方向参数， 波 达方向参数至少包括邻小区天线时频资源块针对邻小区服务范围内用户设备 的下倾角信息，并根据波达方向参数确定邻小区天线上时频资源块针对邻小区 服务范围内用户设备的最优下倾角信息。
其中， 第五获取单元， 具体用于在本小区天线上时频资源块内的各导频资 源格上向邻小区服务范围内用户设备发送不同波达方向参数的信道状态信息 参考信号，并接收邻小区服务范围内用户设备反馈的在参考信号上测量得到的 信号接收强度大于预设阈值的参考信号所对应的波达方向参数； 或者
第五获取单元， 具体用于采用时分、频分或码分方式在本小区天线上时频 资源块内的各导频资源格上向邻小区服务范围内用户设备发送参考信号，接收 邻小区服务范围内用户设备根据参考信号估计得到的信道状态的预编码，并根 据预编码估计得出邻小区服务范围内用户设备的波达方向参数； 或者
第五获取单元，具体用于根据邻小区天线服务范围内用户设备上报的上行 信道质量测量参考信号估计得到邻小区天线服务范围内用户设备的波达方向 参数。
具体地， 设置模块 302包括：
第一确定单元，用于根据本小区下倾角协调信息和邻小区下倾角协调信息 确定本小区天线上时频资源块针对本小区服务范围内用户设备可使用的下倾 角范围；
设置单元，用于根据第一确定单元确定的可使用的下倾角范围按照预设规 则设置本小区天线上时频资源块针对待协调用户设备的下倾角。
其中， 第一确定单元， 具体用于根据本小区下倾角协调信息中的本小区天 线上时频资源块针对本小区服务范围内用户设备的最优下倾角信息确定本小 区天线上时频资源块针对本小区服务范围内用户设备的最优下倾角范围，取所 述最优下倾角范围内除所述邻小区下倾角信息中不推荐相邻小区使用的下倾 角外的下倾角范围作为本小区天线上时频资源块针对本小区服务范围内用户 设备可使用的下倾角范围； 或者
第一确定单元，具体用于根据邻小区协调信息中的邻小区基站位置信息与 本小区协调信息中的本小区基站位置信息计算得出本小区基站与邻小区基站 间的间距，根据间距和本小区天线垂直主束波宽度按照几何关系计算得出本小 区天线上时频资源块针对本小区服务范围内用户设备可使用的下倾角范围；或 者
所述第一确定单元，具体用于根据本小区下倾角协调信息中的本小区天线 上时频资源块针对本小区服务范围内用户设备的最优下倾角信息确定本小区 天线上时频资源块针对本小区服务范围内用户设备的最优下倾角范围；根据所 述邻小区下倾角协调信息中的邻小区天线在时频资源块上下倾角的使用概率， 获取使用概率超过第一阈值的邻小区下倾角组成的集合，根据邻小区基站的位 置信息和本小区基站的位置信息，计算出本小区天线针对所述邻小区下倾角组 成的集合所对应地理位置的下倾角集合 B,取所述最优下倾角范围内除所述集 合 B 中的下倾角外的下倾角范围作为本小区天线上时频资源块针对本小区服 务范围内用户设备可使用的下倾角范围； 或者
所述第一确定单元，具体用于根据本小区下倾角协调信息中的本小区天线 上时频资源块针对本小区服务范围内用户设备的最优下倾角信息确定本小区 天线上时频资源块针对本小区服务范围内用户设备的最优下倾角范围；根据邻 小区下倾角协调信息中的邻小区服务范围内 UE的位置信息，及本小区基站的 位置信息， 计算出本小区天线针对所述邻小区 UE位置信息的下倾角集合 C; 或根据邻小区天线上时频资源块针对邻小区服务范围内用户设备的最优下倾 角信息及邻小区基站的位置信息，计算出所述最优下倾角对应地理位置，根据 所述最优下倾角对应地理位置和本小区基站的位置信息，计算出本小区天线针 对所述最优下倾角对应地理位置的下倾角集合 C;取所述最优下倾角范围内除 所述集合 C 中的下倾角外的下倾角范围作为本小区天线上时频资源块针对本 小区服务范围内用户设备可使用的下倾角范围； 或者
所述第一确定单元，具体用于根据本小区下倾角协调信息中的本小区天线 上时频资源块针对本小区服务范围内用户设备的最优下倾角信息确定本小区 天线上时频资源块针对本小区服务范围内用户设备的最优下倾角范围；根据邻 小区下倾角协调信息中的邻小区基站各时频资源块分配给不同用户设备的概 率， 查找被分配邻小区时频资源块的概率大于第二阈值的用户设备，根据所述 查找到的 UE的位置信息， 及本小区基站的位置信息， 计算出本小区天线针对 所述查找到的 UE的位置信息的下倾角集合 D; 或根据邻小区天线上时频资源 块针对所述查找到的 UE的最优下倾角信息及邻小区基站的位置信息，计算出 所述最优下倾角对应地理位置，根据所述最优下倾角对应地理位置和本小区基 站的位置信息，计算出本小区天线针对所述最优下倾角对应地理位置的下倾角 集合 D, 取所述最优下倾角范围内除所述集合 D 中的下倾角外的下倾角范围 作为本小区天线上时频资源块针对本小区服务范围内用户设备可使用的下倾 角范围。
设置单元，具体用于从本小区协调信息中的本小区天线上时频资源块针对 本小区服务范围内用户设备的最优下倾角信息中获取待协调用户设备的最优 下倾角信息，遍历可使用的下倾角范围内所有可使用的下倾角，找出最接近于 待协调用户设备的最优下倾角的可使用的下倾角，将本小区天线上时频资源块 针对待协调用户设备的下倾角设置为最接近于待协调用户设备的最优下倾角 的可使用的下倾角； 或者
设置单元， 具体用于遍历可使用的下倾角范围内的所有可使用的下倾角， 找出使待协调用户设备的信号接收功率最大的可使用的下倾角，将本小区天线 上时频资源块针对待协调用户设备的下倾角设置为使待协调用户设备的信号 接收功率最大的可使用的下倾角； 或者
设置单元， 具体用于遍历可使用的下倾角范围内的所有可使用的下倾角， 找到使信号泄漏比最大的可使用的下倾角，将本小区天线上时频资源块针对待 协调用户设备的下倾角设置为使信号泄漏比最大的可使用的下倾角； 或者
设置单元， 具体用于遍历可使用的下倾角范围内的所有可使用的下倾角， 找到使信干噪比之和最大时的可使用的下倾角，将本小区天线上时频资源块针 对待协调用户设备的下倾角设置为使信干噪比之和最大时的可使用的下倾角。
另外， 装置还包括:协调模块 303;
协调模块 303包括： 分类单元， 用于对本小区服务范围内用户设备进行分 类； 第一协调单元，用于根据本小区服务范围内用户设备的分类信息按照部分 频分复用 FFR调度原则或软频率复用 SFR调度原则在本小区天线上为待协调 用户设备分配时频资源块； 或者
第二协调单元，用于根据本小区服务范围内用户设备的分类信息及邻小区 协调信息中的邻小区天线上各时频资源块上下倾角的使用概率的情况按照自 定义动态调度原则在本小区天线上为待协调用户设备分配时频资源块。
其中， 分类单元， 具体用于根据本小区下倾角协调信息中的本小区天线上 时频资源块针对本小区服务范围内用户设备的最优下倾角信息按照预设分配 规则对本小区服务范围内用户设备进行分类； 或者
分类单元，具体用于根据本小区下倾角协调信息中的本小区服务范围内用 户设备的位置信息直接对本小区服务范围内用户设备进行分类。
通过获取本小区下倾角协调信息和邻小区下倾角协调信息，根据本小区下 倾角协调信息和邻小区下倾角协调信息设置本小区天线上时频资源块针对待 协调用户设备的下倾角的技术方案的实现，使得在设置本小区天线上时频资源 块针对待协调用户设备的下倾角时参考了本小区及邻小区的下倾角协调信息， 保证了本小区服务范围内用户设备的信号接收功率及 SINR体验的同时， 避免 对邻小区服务范围内用户设备的干扰。
以上实施例提供的技术方案中的全部或部分内容可以通过软件编程实现， 其软件程序存储在可读取的存储介质中， 存储介质例如： 计算机中的硬盘、 光 盘或软盘。 以上所述仅为本发明的较佳实施例， 并不用以限制本发明， 凡在本发明的 精神和原则之内， 所作的任何修改、 等同替换、 改进等， 均应包含在本发明的 保护范围之内。 权 利 要 求
1、 一种处理小区间干扰的方法， 其特征在于， 所述方法包括：
获取本小区下倾角协调信息和邻小区下倾角协调信息；
根据所述本小区下倾角协调信息和所述邻小区下倾角协调信息设置本小 区天线上时频资源块针对待协调用户设备的下倾角；
所述本小区下倾角协调信息和所述邻小区下倾角协调信息的任一个下倾 角协调信息包括：小区天线上时频资源块针对小区服务范围内用户设备的最优 下倾角信息、 小区服务范围内用户设备的位置信息、 小区基站的位置信息、 小 区天线上各时频资源块上下倾角的使用概率、小区基站各时频资源块分配给不 同用户设备的概率和不推荐相邻小区天线上时频资源块使用的下倾角中的一 项或多项。
2、 根据权利要求 1所述的方法， 其特征在于， 获取本小区天线上时频资 源块针对本小区服务范围内用户设备的最优下倾角信息包括：
获取本小区服务范围内用户设备的波达方向参数，所述波达方向参数至少 包括本小区天线时频资源块针对本小区服务范围内用户设备的下倾角信息，并 根据所述波达方向参数确定本小区天线上时频资源块针对本小区服务范围内 用户设备的最优下倾角信息。 3、 根据权利要求 2所述的方法， 其特征在于， 所述获取本小区服务范围 内用户设备的波达方向参数， 包括： 户设备发送不同波达方向参数的信道状态信息参考信号，并接收所述本小区服 务范围内用户设备反馈的在所述参考信号上测量得到的信号接收强度大于预 设阈值的所述参考信号所对应的波达方向参数； 或者

Claims
采用时分、频分或码分方式在本小区天线上时频资源块内的各导频资源格 上向本小区服务范围内用户设备发送参考信号，接收所述本小区服务范围内用 户设备根据所述参考信号估计得到的信道状态的预编码，并根据所述预编码估 计得出所述本小区服务范围内用户设备的波达方向参数； 或者
根据本小区服务范围内用户设备上报的上行信道质量测量参考信号估计 得到所述本小区服务范围内用户设备的波达方向参数。
4、 根据权利 1至 3任一项所述的方法， 其特征在于， 获取本小区服务范 围内用户设备的位置信息包括：
根据本小区服务范围内用户设备上报的上行信道质量测量参考信号估计 得到所述本小区服务范围内用户设备的波达方向参数，所述波达方向参数至少 包括本小区天线时频资源块针对小区服务范围内用户设备的下倾角信息，并根 据所述波达方向参数计算得出本小区服务范围内用户设备的位置信息； 或者 接收本小区服务范围内用户设备根据预定定位技术定位得到的位置信息。
5、 根据权利要求 1至 4任一项所述的方法， 其特征在于， 获取本小区的 不推荐相邻小区天线上时频资源块使用的下倾角包括：
接收至少一个本小区服务的用户设备上报的邻小区天线上时频资源块针 对所述预定用户设备的下倾角信息，从所述邻小区天线上时频资源块针对所述 预定用户设备的下倾角信息中选出本小区不推荐相邻小区天线上时频资源块 使用的下倾角。
6、 根据权利要求 1至 5任一项所述的方法， 其特征在于， 所述获取邻小 区下倾角协调信息包括：
接收邻小区发送的邻小区下倾角协调信息。
7、 根据权利要求 1至 5任一项所述的方法， 其特征在于， 获取邻小区的 不推荐相邻小区天线上时频资源块使用的下倾角， 包括：
获取邻小区服务范围内用户设备的波达方向参数，所述波达方向参数至少 包括本小区天线时频资源块针对邻小区服务范围内用户设备的下倾角信息，并 根据所述波达方向参数确定邻小区的不推荐相邻小区天线上时频资源块使用 的下倾角。
8、 根据权利要求 7所述的方法， 其特征在于， 所述获取邻小区服务范围 内用户设备的波达方向参数包括： 户设备发送不同波达方向参数的信道状态信息参考信号，并接收所述邻小区服 务范围内用户设备反馈的在所述参考信号上测量得到的信号接收强度大于预 设阈值的所述参考信号所对应的波达方向参数； 或者
采用时分、频分或码分方式在本小区天线上时频资源块内的各导频资源格 上向邻小区服务范围内用户设备发送参考信号，接收所述邻小区服务范围内用 户设备根据所述参考信号估计得到的信道状态的预编码，并根据所述预编码估 计得出所述邻小区服务范围内用户设备的波达方向参数； 或者
根据邻小区天线服务范围内用户设备上报的上行信道质量测量参考信号 估计得到所述邻小区天线服务范围内用户设备的波达方向参数。
9、 根据权利要求 1至 8任一项所述的方法， 其特征在于， 根据所述本小 区下倾角协调信息和所述邻小区下倾角协调信息设置本小区天线上时频资源 块针对待协调用户设备的下倾角包括：
根据所述本小区下倾角协调信息和所述邻小区下倾角协调信息确定本小 区天线上时频资源块针对本小区服务范围内用户设备可使用的下倾角范围； 根据所述可使用的下倾角范围按照预设规则设置本小区天线上时频资源 块针对待协调用户设备的下倾角。
10、 根据权利要求 9所述的方法， 其特征在于， 所述根据所述本小区下倾 角协调信息和所述邻小区下倾角协调信息确定本小区天线上时频资源块针对 本小区服务范围内用户设备可使用的下倾角范围包括：
根据所述本小区下倾角协调信息中的本小区天线上时频资源块针对本小 区服务范围内用户设备的最优下倾角信息确定本小区天线上时频资源块针对 本小区服务范围内用户设备的最优下倾角范围，取所述最优下倾角范围内除所 述邻小区下倾角信息中不推荐相邻小区使用的下倾角外的下倾角范围作为本 小区天线上时频资源块针对本小区服务范围内用户设备可使用的下倾角范围； 或者
根据邻小区协调信息中的邻小区基站位置信息与本小区协调信息中的本 小区基站位置信息计算得出本小区基站与邻小区基站间的间距，根据所述间距 和本小区天线垂直主束波宽度按照几何关系计算得出本小区天线上时频资源 块针对本小区服务范围内用户设备可使用的下倾角范围； 或者
根据本小区下倾角协调信息中的本小区天线上时频资源块针对本小区服 务范围内用户设备的最优下倾角信息确定本小区天线上时频资源块针对本小 区服务范围内用户设备的最优下倾角范围；根据所述邻小区下倾角协调信息中 的邻小区天线在时频资源块上下倾角的使用概率，获取使用概率超过第一阈值 的邻小区下倾角组成的集合，根据邻小区基站的位置信息和本小区基站的位置 信息，计算出本小区天线针对所述邻小区下倾角组成的集合所对应地理位置的 下倾角集合 B,取所述最优下倾角范围内除所述集合 B中的下倾角外的下倾角 范围作为本小区天线上时频资源块针对本小区服务范围内用户设备可使用的 下倾角范围； 或者
根据本小区下倾角协调信息中的本小区天线上时频资源块针对本小区服 务范围内用户设备的最优下倾角信息确定本小区天线上时频资源块针对本小 区服务范围内用户设备的最优下倾角范围；根据邻小区下倾角协调信息中的邻 小区服务范围内 UE的位置信息， 及本小区基站的位置信息， 计算出本小区天 线针对所述邻小区 UE位置信息的下倾角集合 C; 或根据邻小区天线上时频资 源块针对邻小区服务范围内用户设备的最优下倾角信息及邻小区基站的位置 信息，计算出所述最优下倾角对应地理位置，根据所述最优下倾角对应地理位 置和本小区基站的位置信息，计算出本小区天线针对所述最优下倾角对应地理 位置的下倾角集合 C;取所述最优下倾角范围内除所述集合 C中的下倾角外的 下倾角范围作为本小区天线上时频资源块针对本小区服务范围内用户设备可 使用的下倾角范围； 或者
根据本小区下倾角协调信息中的本小区天线上时频资源块针对本小区服 务范围内用户设备的最优下倾角信息确定本小区天线上时频资源块针对本小 区服务范围内用户设备的最优下倾角范围；根据邻小区下倾角协调信息中的邻 小区基站各时频资源块分配给不同用户设备的概率，查找被分配邻小区时频资 源块的概率大于第二阈值的用户设备， 根据所述查找到的 UE的位置信息， 及 本小区基站的位置信息，计算出本小区天线针对所述查找到的 UE的位置信息 的下倾角集合 D; 或根据邻小区天线上时频资源块针对所述查找到的 UE的最 优下倾角信息及邻小区基站的位置信息， 计算出所述最优下倾角对应地理位 置，根据所述最优下倾角对应地理位置和本小区基站的位置信息，计算出本小 区天线针对所述最优下倾角对应地理位置的下倾角集合 D,取所述最优下倾角 范围内除所述集合 D 中的下倾角外的下倾角范围作为本小区天线上时频资源 块针对本小区服务范围内用户设备可使用的下倾角范围。
11、 根据权利要求 9或 10所述的方法， 其特征在于， 所述根据所述可使 用的下倾角范围按照预设规则设置本小区天线上时频资源块针对待协调用户 设备的下倾角包括：
从所述本小区协调信息中的本小区天线上时频资源块针对本小区服务范 围内用户设备的最优下倾角信息中获取待协调用户设备的最优下倾角信息，遍 历所述可使用的下倾角范围内所有可使用的下倾角，找出最接近于所述待协调 用户设备的最优下倾角的可使用的下倾角，将本小区天线上时频资源块针对所 述待协调用户设备的下倾角设置为所述最接近于所述待协调用户设备的最优 下倾角的可使用的下倾角； 或者
遍历所述可使用的下倾角范围内的所有可使用的下倾角，找出使所述待协 调用户设备的信号接收功率最大的可使用的下倾角，将本小区天线上时频资源 块针对所述待协调用户设备的下倾角设置为所述使所述待协调用户设备的信 号接收功率最大的可使用的下倾角； 或者
遍历所述可使用的下倾角范围内的所有可使用的下倾角，找到使所述信号 泄漏比最大的可使用的下倾角，将本小区天线上时频资源块针对所述待协调用 户设备的下倾角设置为所述使所述信号泄漏比最大的可使用的下倾角； 或者 遍历所述可使用的下倾角范围内的所有可使用的下倾角，找到使所述信干 噪比之和最大时的可使用的下倾角，将本小区天线上时频资源块针对所述待协 调用户设备的下倾角设置为使所述信干噪比之和最大时的可使用的下倾角。
12、 根据权利要求 1至 11任一项所述的方法， 其特征在于， 所述方法还 包括：
对本小区服务范围内用户设备进行分类，根据本小区服务范围内用户设备 的分类信息按照部分频分复用 FFR调度原则或软频率复用 SFR调度原则在本 小区天线上为所述待协调用户设备分配时频资源块； 或者 对本小区服务范围内用户设备进行分类，根据本小区服务范围内用户设备 的分类信息及邻小区协调信息中的邻小区天线上各时频资源块上下倾角的使 用概率的情况按照自定义动态调度原则在本小区天线上为所述待协调用户设 备分配时频资源块。
13、 根据权利要求 12所述的方法， 其特征在于， 所述对本小区服务范围 内用户设备进行分类包括：
根据所述本小区下倾角协调信息中的本小区天线上时频资源块针对本小 区服务范围内用户设备的最优下倾角信息按照预设分配规则对本小区服务范 围内用户设备进行分类； 或者
根据所述本小区下倾角协调信息中的本小区服务范围内用户设备的位置 信息直接对本小区服务范围内用户设备进行分类。
14、 一种处理小区间干扰的装置， 其特征在于， 所述装置包括： 获取模块 和设置模块；
所述获取模块， 用于获取本小区下倾角协调信息和邻小区下倾角协调信 息，所述本小区下倾角协调信息和所述邻小区下倾角协调信息的任一个下倾角 协调信息包括：小区天线上时频资源块针对小区服务范围内用户设备的最优下 倾角信息、 小区服务范围内用户设备的位置信息、 小区基站的位置信息、 小区 天线上各时频资源块上下倾角的使用概率、小区基站各时频资源块分配给不同 用户设备的概率和不推荐相邻小区天线上时频资源块使用的下倾角中的一项 或多项；
所述设置模块，用于根据所述获取模块获取的本小区下倾角协调信息和邻 小区下倾角协调信息设置本小区天线上时频资源块针对待协调用户设备的下 倾角。
15、 根据权利要求 14所述的装置， 其特征在于， 所述获取模块包括： 第一获取单元， 用于获取本小区服务范围内用户设备的波达方向参数， 所 述波达方向参数至少包括本小区天线时频资源块针对本小区服务范围内用户 设备的下倾角信息；
确定单元，用于根据所述第一获取单元获取的波达方向参数确定本小区天 线上时频资源块针对本小区服务范围内用户设备的最优下倾角信息。
16、 根据权利要求 15所述的装置， 其特征在于， 所述第一获取单元， 具 体用于在本小区天线上时频资源块内的各导频资源格上向本小区服务范围内 用户设备发送不同波达方向参数的信道状态信息参考信号，并接收所述本小区 服务范围内用户设备反馈的在所述参考信号上测量得到的信号接收强度大于 预设阈值的所述参考信号所对应的波达方向参数； 或者
所述第一获取单元， 具体用于采用时分、频分或码分方式在本小区天线上 时频资源块内的各导频资源格上向本小区服务范围内用户设备发送参考信号， 接收所述本小区服务范围内用户设备根据所述参考信号估计得到的信道状态 的预编码，并根据所述预编码估计得出所述本小区服务范围内用户设备的波达 方向参数； 或者
所述第一获取单元，具体用于根据本小区服务范围内用户设备上报的上行 信道质量测量参考信号估计得到所述本小区服务范围内用户设备的波达方向 参数。
17、 根据权利 14至 16任一项所述的装置， 其特征在于， 所述获取模块包 括：
第二获取单元，用于根据本小区服务范围内用户设备上报的上行信道质量 测量参考信号估计得到所述本小区服务范围内用户设备的波达方向参数，所述 波达方向参数至少包括本小区天线时频资源块针对小区服务范围内用户设备 的下倾角信息，并根据所述波达方向参数计算得出本小区服务范围内用户设备 的位置信息； 或者
第三获取单元，用于接收本小区服务范围内用户设备根据预定定位技术定 位得到的位置信息。
18、 根据权利要求 14至 17任一项所述的装置， 其特征在于， 所述获取模 块包括：
第四获取单元，用于接收至少一个本小区服务的用户设备上报的邻小区天 线上时频资源块针对所述预定用户设备的下倾角信息，从所述邻小区天线上时 频资源块针对所述预定用户设备的下倾角信息中选出本小区不推荐相邻小区 天线上时频资源块使用的下倾角。
19、 根据权利要求 14至 18任一项所述的装置， 其特征在于， 所述获取模 块包括：
接收单元， 用于接收邻小区发送的邻小区下倾角协调信息。
20、 根据权利要求 14至 18任一项所述的装置， 其特征在于， 所述获取模 块包括：：
第五获取单元， 用于获取邻小区服务范围内用户设备的波达方向参数， 所 述波达方向参数至少包括邻小区天线时频资源块针对邻小区服务范围内用户 设备的下倾角信息，并根据所述波达方向参数确定邻小区天线上时频资源块针 对邻小区服务范围内用户设备的最优下倾角信息。
21、 根据权利要求 20所述的装置， 其特征在于， 所述第五获取单元， 具 体用于在本小区天线上时频资源块内的各导频资源格上向邻小区服务范围内 用户设备发送不同波达方向参数的信道状态信息参考信号，并接收所述邻小区 服务范围内用户设备反馈的在所述参考信号上测量得到的信号接收强度大于 预设阈值的所述参考信号所对应的波达方向参数； 或者
所述第五获取单元， 具体用于采用时分、频分或码分方式在本小区天线上 时频资源块内的各导频资源格上向邻小区服务范围内用户设备发送参考信号， 接收所述邻小区服务范围内用户设备根据所述参考信号估计得到的信道状态 的预编码，并根据所述预编码估计得出所述邻小区服务范围内用户设备的波达 方向参数； 或者
所述第五获取单元，具体用于根据邻小区天线服务范围内用户设备上报的 上行信道质量测量参考信号估计得到所述邻小区天线服务范围内用户设备的 波达方向参数。
22、 根据权利要求 14至 21任一项所述的装置， 其特征在于， 所述设置模 块包括：
第一确定单元，用于根据所述本小区下倾角协调信息和所述邻小区下倾角 协调信息确定本小区天线上时频资源块针对本小区服务范围内用户设备可使 用的下倾角范围；
设置单元，用于根据所述第一确定单元确定的可使用的下倾角范围按照预 设规则设置本小区天线上时频资源块针对待协调用户设备的下倾角。
23、 根据权利要求 22所述的装置， 其特征在于， 所述第一确定单元， 具 体用于根据所述本小区下倾角协调信息中的本小区天线上时频资源块针对本 小区服务范围内用户设备的最优下倾角信息确定本小区天线上时频资源块针 对本小区服务范围内用户设备的最优下倾角范围，取所述最优下倾角范围内除 所述邻小区下倾角信息中不推荐相邻小区使用的下倾角外的下倾角范围作为 本小区天线上时频资源块针对本小区服务范围内用户设备可使用的下倾角范 围； 或者
所述第一确定单元，具体用于根据邻小区协调信息中的邻小区基站位置信 息与本小区协调信息中的本小区基站位置信息计算得出本小区基站与邻小区 基站间的间距，根据所述间距和本小区天线垂直主束波宽度按照几何关系计算 得出本小区天线上时频资源块针对本小区服务范围内用户设备可使用的下倾 角范围； 或者
所述第一确定单元，具体用于根据本小区下倾角协调信息中的本小区天线 上时频资源块针对本小区服务范围内用户设备的最优下倾角信息确定本小区 天线上时频资源块针对本小区服务范围内用户设备的最优下倾角范围；根据所 述邻小区下倾角协调信息中的邻小区天线在时频资源块上下倾角的使用概率， 获取使用概率超过第一阈值的邻小区下倾角组成的集合，根据邻小区基站的位 置信息和本小区基站的位置信息，计算出本小区天线针对所述邻小区下倾角组 成的集合所对应地理位置的下倾角集合 B,取所述最优下倾角范围内除所述集 合 B 中的下倾角外的下倾角范围作为本小区天线上时频资源块针对本小区服 务范围内用户设备可使用的下倾角范围； 或者
所述第一确定单元，具体用于根据本小区下倾角协调信息中的本小区天线 上时频资源块针对本小区服务范围内用户设备的最优下倾角信息确定本小区 天线上时频资源块针对本小区服务范围内用户设备的最优下倾角范围；根据邻 小区下倾角协调信息中的邻小区服务范围内 UE的位置信息，及本小区基站的 位置信息， 计算出本小区天线针对所述邻小区 UE位置信息的下倾角集合 C; 或根据邻小区天线上时频资源块针对邻小区服务范围内用户设备的最优下倾 角信息及邻小区基站的位置信息，计算出所述最优下倾角对应地理位置，根据 所述最优下倾角对应地理位置和本小区基站的位置信息，计算出本小区天线针 对所述最优下倾角对应地理位置的下倾角集合 C;取所述最优下倾角范围内除 所述集合 C 中的下倾角外的下倾角范围作为本小区天线上时频资源块针对本 小区服务范围内用户设备可使用的下倾角范围； 或者
所述第一确定单元，具体用于根据本小区下倾角协调信息中的本小区天线 上时频资源块针对本小区服务范围内用户设备的最优下倾角信息确定本小区 天线上时频资源块针对本小区服务范围内用户设备的最优下倾角范围；根据邻 小区下倾角协调信息中的邻小区基站各时频资源块分配给不同用户设备的概 率， 查找被分配邻小区时频资源块的概率大于第二阈值的用户设备，根据所述 查找到的 UE的位置信息， 及本小区基站的位置信息， 计算出本小区天线针对 所述查找到的 UE的位置信息的下倾角集合 D; 或根据邻小区天线上时频资源 块针对所述查找到的 UE的最优下倾角信息及邻小区基站的位置信息，计算出 所述最优下倾角对应地理位置，根据所述最优下倾角对应地理位置和本小区基 站的位置信息，计算出本小区天线针对所述最优下倾角对应地理位置的下倾角 集合 D, 取所述最优下倾角范围内除所述集合 D 中的下倾角外的下倾角范围 作为本小区天线上时频资源块针对本小区服务范围内用户设备可使用的下倾 角范围。
24、 根据权利要求 22或 23所述的装置， 其特征在于， 所述设置单元， 具 体用于从所述本小区协调信息中的本小区天线上时频资源块针对本小区服务 范围内用户设备的最优下倾角信息中获取待协调用户设备的最优下倾角信息， 遍历所述可使用的下倾角范围内所有可使用的下倾角，找出最接近于所述待协 调用户设备的最优下倾角的可使用的下倾角，将本小区天线上时频资源块针对 所述待协调用户设备的下倾角设置为所述最接近于所述待协调用户设备的最 优下倾角的可使用的下倾角； 或者 所述设置单元，具体用于遍历所述可使用的下倾角范围内的所有可使用的 下倾角， 找出使所述待协调用户设备的信号接收功率最大的可使用的下倾角， 将本小区天线上时频资源块针对所述待协调用户设备的下倾角设置为所述使 所述待协调用户设备的信号接收功率最大的可使用的下倾角； 或者
所述设置单元，具体用于遍历所述可使用的下倾角范围内的所有可使用的 下倾角，找到使所述信号泄漏比最大的可使用的下倾角，将本小区天线上时频 资源块针对所述待协调用户设备的下倾角设置为所述使所述信号泄漏比最大 的可使用的下倾角； 或者
所述设置单元，具体用于遍历所述可使用的下倾角范围内的所有可使用的 下倾角，找到使所述信干噪比之和最大时的可使用的下倾角，将本小区天线上 时频资源块针对所述待协调用户设备的下倾角设置为使所述信干噪比之和最 大时的可使用的下倾角。
25、 根据权利要求 14至 24任一项所述的装置， 其特征在于， 所述装置还 包括:协调模块；
所述协调模块包括： 分类单元， 用于对本小区服务范围内用户设备进行分 类；
第一协调单元，用于根据本小区服务范围内用户设备的分类信息按照部分 频分复用 FFR调度原则或软频率复用 SFR调度原则在本小区天线上为所述待 协调用户设备分配时频资源块； 或者
所述协调模块包括： 分类单元， 用于对本小区服务范围内用户设备进行分 类；
第二协调单元，用于根据本小区服务范围内用户设备的分类信息及邻小区 协调信息中的邻小区天线上各时频资源块上下倾角的使用概率的情况按照自 定义动态调度原则在本小区天线上为所述待协调用户设备分配时频资源块。
26、 根据权利要求 25所述的装置， 其特征在于， 所述分类单元， 具体用 于根据所述本小区下倾角协调信息中的本小区天线上时频资源块针对本小区 服务范围内用户设备的最优下倾角信息按照预设分配规则对本小区服务范围 内用户设备进行分类； 或者
所述分类单元，具体用于根据所述本小区下倾角协调信息中的本小区服务 范围内用户设备的位置信息直接对本小区服务范围内用户设备进行分类。
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