WO2017211212A1 - Dispositif et procédé destinés à positionner une cellule de source d'interférence, et station de base - Google Patents

Dispositif et procédé destinés à positionner une cellule de source d'interférence, et station de base Download PDF

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Publication number
WO2017211212A1
WO2017211212A1 PCT/CN2017/086397 CN2017086397W WO2017211212A1 WO 2017211212 A1 WO2017211212 A1 WO 2017211212A1 CN 2017086397 W CN2017086397 W CN 2017086397W WO 2017211212 A1 WO2017211212 A1 WO 2017211212A1
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Prior art keywords
cell
interference
determining
interference signal
crs sequence
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PCT/CN2017/086397
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English (en)
Chinese (zh)
Inventor
曾召华
王雯芳
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中兴通讯股份有限公司
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Publication of WO2017211212A1 publication Critical patent/WO2017211212A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • 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
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H04W64/003—Locating users or terminals or network equipment for network management purposes, e.g. mobility management locating network equipment

Definitions

  • the present disclosure relates to the field of communications, and in particular, to a method, an apparatus, and a base station for positioning an interference source cell.
  • the base station For the Time Division-Long Term Evolution (TD-LTE) system, the base station is required to maintain strict time synchronization. Generally, the global positioning system (GPS) is used to ensure synchronization. Time synchronization between base stations. However, in the TD-LTE system, the network is deployed in the same frequency coverage manner, which may cause mutual interference between neighboring cells. Due to the uplink and downlink transmission sharing frequency of the TD-LTE system, in addition to the traditional inter-cell interference in the TD-LTE system, the downlink signal of the remote base station interferes with the target cell (corresponding to the current cell described below). Signal problem.
  • GPS global positioning system
  • the cell of the base station (corresponding to the current cell described below) is interfered by the signals of other cells, it is necessary to analyze the source of the interference signal, that is, determine the cell to which the interference signal belongs, thereby preparing for the interference cancellation. If the cell of a certain base station cannot work normally due to interference of other cells, and cannot quickly locate the source of the interference signal, it is difficult to eliminate the interference signal, and the victim cell cannot be quickly restored to the normal working state.
  • the related technology is the remote end of the TD-LTE network.
  • the interference detection method involves less, and since the interference between the above base stations has a multi-station cumulative superposition and a wide range, it is difficult to accurately locate the interference source in the related art.
  • the embodiments of the present disclosure provide a method, a device, and a base station for locating an interference source cell, so as to at least solve the problem that the related information cannot be accurately located.
  • a method for locating an interference source cell including: acquiring an interference signal that interferes with a current cell; and determining, according to the interference signal, a cell reference signal of an interference source cell that sends the interference signal. a CRS sequence; determining the interferer cell according to the CRS sequence.
  • the acquiring the interference signal that interferes with the current cell includes at least one of: acquiring the interference signal in an uplink time slot of a base station to which the current cell belongs; The interference signal is acquired in a downlink time slot.
  • the acquiring the interference signal in the uplink time slot of the base station to which the current cell belongs includes: when the current cell is in an idle state, in the uplink time slot of the base station Obtaining the interference signal; and/or acquiring the interference signal in the downlink time slot of the base station to which the current cell belongs includes: after placing the downlink time slot in a silent state, in the The interference signal is acquired in the downlink time slot of the base station.
  • determining, according to the interference signal, the CRS sequence of the interference source cell that sends the interference signal comprises: performing time domain to frequency domain transformation on the interference signal to obtain a frequency domain interference signal; The frequency domain interference signal determines a symbol in which the CRS sequence is located; the CRS sequence is determined according to a symbol in which the CRS sequence is located.
  • performing time domain to frequency domain transform on the interference signal comprises: performing time domain symbol synchronization on the interference signal; and performing time domain to frequency domain transform on the interference signal that performs time domain symbol synchronization.
  • determining, according to the symbol in which the CRS sequence is located, the CRS sequence includes: Determining a set of values of the CRS sequence according to a symbol in which the CRS sequence is located; determining an actual value of the CRS sequence by performing traversal matching on values in the set of values of the CRS sequence.
  • determining, by performing traversal matching on the value in the set of values of the CRS sequence, the actual value of the CRS sequence includes: according to the location of the resource block occupied by the CRS sequence in the frequency domain from the Determining a set of values of the CRS sequence in the set of values; determining an actual value of the CRS sequence by performing traversal matching on the values in the subset of values of the CRS sequence.
  • determining, according to the CRS sequence, the interference source cell includes: determining, according to a cell identifier used when the CRS sequence is generated, a cell identifier of the interference source cell; determining, according to a cell identifier of the interference source cell, Interference source cell.
  • determining the interference source cell according to the cell identifier of the interference source cell includes: determining a distance between the interference source cell and the current cell, and/or determining, by the interference source cell, the current The location information of the cell; determining the interference source cell according to the determined distance, the location information, and the cell identity of the interference source cell.
  • determining the location information of the interference source cell relative to the current cell includes: determining an arrival angle of the interference signal to the current cell; determining, according to the angle of arrival, an interference source cell, relative to the current cell. Bearing information.
  • a positioning apparatus for an interference source cell including: an acquiring module, configured to acquire an interference signal that interferes with a current cell; and a first determining module configured to be according to the interference signal Determining a cell reference signal CRS sequence of the interference source cell that sends the interference signal; and determining, by the second determining module, the interference source cell according to the CRS sequence.
  • the acquiring module acquires, by using at least one of the following manners, the interference signal that interferes with the current cell: acquiring the interference signal in an uplink time slot of a base station to which the current cell belongs; The interference signal is acquired in a downlink time slot of a base station to which the current cell belongs.
  • the first determining module determines, according to the interference signal, the CRS sequence of the interference source cell that sends the interference signal according to the interference signal: performing time domain to frequency domain transformation on the interference signal, Obtaining a frequency domain interference signal; determining, according to the frequency domain interference signal, a symbol in which the CRS sequence is located; determining the CRS sequence according to a symbol in which the CRS sequence is located.
  • the second determining module determines, according to the CRS sequence, the interference source cell by: determining, according to the cell identifier used when the CRS sequence is generated, a cell identifier of the interference source cell; The cell identity of the source cell determines the interference source cell.
  • a base station comprising the positioning device of the interference source cell according to any one of the above.
  • a storage medium is also provided.
  • the storage medium is arranged to store program code for performing the steps in any of the above methods.
  • an electronic device comprising a memory, a processor, and a computer program stored on the memory and operable on the processor, wherein the processor The method of any of the above is performed by the computer program.
  • the CRS sequence of the interference source cell is determined according to the interference signal, and then the specific interference source cell is determined according to the CRS sequence, thereby realizing the purpose of locating the interference source cell, and solving the related art
  • the problem of accurately locating the interference source cannot be achieved, and the interference source is accurately located, thereby effectively eliminating the interference effect.
  • 1 is a schematic diagram of long-distance co-channel interference in a TD-LTE system
  • FIG. 2 is a block diagram showing a hardware structure of a base station of a method for locating an interference source cell according to an embodiment of the present disclosure
  • FIG. 3 is a flowchart of a method of locating an interference source cell according to an embodiment of the present disclosure
  • FIG. 4 is a flowchart of a method of locating an aggressor cell according to an embodiment of the present disclosure
  • FIG. 5 is a flow chart of a method of interference signal detection in accordance with an embodiment of the present disclosure
  • FIG. 6 is a schematic diagram of a single-port, two-port, and four-port CRS transmission location in a normal cyclic prefix in a TD-LTE system according to an embodiment of the present disclosure
  • FIG. 7 is a flowchart of another method for locating an interference source cell according to an embodiment of the present disclosure.
  • FIG. 8 is a structural block diagram of a positioning apparatus of an interference source cell according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic diagram of an apparatus for locating an interferer cell according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic diagram of another apparatus for locating an interference source cell according to an embodiment of the present disclosure.
  • a base station is provided, and the method embodiment provided in this embodiment of the present application may be performed in a base station.
  • 2 is a block diagram showing a hardware structure of a base station of a method for locating an interference source cell according to an embodiment of the present disclosure.
  • base station 20 may include one or more (only one of which is shown in FIG. 2) processor 202 (processor 202 may include, but is not limited to, micro A processing device such as a processor MCU or a programmable logic device FPGA, a memory 204 for storing data, and a transmission device 206 for communication functions.
  • FIG. 2 is merely illustrative and does not limit the structure of the above electronic device.
  • base station 20 may also include more or fewer components than those shown in FIG. 2, or have a different configuration than that shown in FIG. 2.
  • the memory 204 can be used to store software programs and modules of the application software, such as program instructions/modules corresponding to the positioning method of the interference source cell in the embodiment of the present disclosure, and the processor 202 runs the software program and the module stored in the memory 204, thereby The above methods are implemented by performing various functional applications and data processing.
  • Memory 204 can include high speed random access memory and can also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid state memory.
  • memory 204 can further include memory remotely located relative to processor 202, which can be connected to base station 20 over a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.
  • Transmission device 206 is for receiving or transmitting data.
  • FIG. 3 is a flowchart of a method for locating an interference source cell according to an embodiment of the present disclosure. As shown in FIG. 3, the process includes the following steps. :
  • Step S302 Acquire an interference signal that interferes with the current cell.
  • Step S304 determining, according to the interference signal, a cell reference signal (Cell-specific Reference Signals, CRS for short) sequence of the interference source cell that sends the interference signal;
  • a cell reference signal Cell-specific Reference Signals, CRS for short
  • Step S306 determining an interference source cell according to the CRS sequence.
  • the CRS sequence of the interference source cell is determined according to the interference signal, and then the specific interference source cell is determined according to the CRS sequence, thereby realizing the purpose of locating the interference source cell, and solving the problem that the related technology cannot accurately locate.
  • the problem of the interference source achieves the accurate positioning of the interference source, thereby effectively eliminating the interference effect.
  • the execution body of the foregoing steps may be a base station, but is not limited thereto.
  • the interfering interference signal may include at least one of the following: an uplink time slot of the base station to which the current cell belongs (the uplink time slot may include an Uplink Pilot Time Slot (UpPTS) and/or an UpPTS). Obtaining the above-mentioned interference signal in the normal uplink time slot; the downlink time slot of the base station to which the current cell belongs (including Downlink Pilot Time Slot (DwPTS) and/or normal downlink except DwPTS) The above interference signal is acquired in the time slot).
  • the interference signal may be extracted from the received signal.
  • the base station when the base station receives a signal, it may first perform interference measurement on the signal. When the measurement result is to determine that there is interference of other cells, the interference signal is extracted from the received signal, and then according to the extracted The interference signal determines the cell that transmitted the interference signal, that is, the interference source cell.
  • an interference signal when acquiring an interference signal, it may be acquired in an uplink time slot of a base station to which the current cell belongs, or may be acquired in a downlink time slot of a base station to which the current cell belongs.
  • the interference signal when acquiring the interference signal in the uplink time slot of the base station to which the current cell belongs, the interference signal may be acquired in an uplink time slot of the base station when the current cell is in an idle state, thereby avoiding the extraction.
  • the signal of the current cell ensures that the extracted signals are all from the interference source cell, thereby providing a guarantee for determining the interference source cell.
  • the downlink time slot may be placed in a silent state (some or all of the downlink time slots may be in a silent state),
  • the interference signal is acquired in the downlink time slot of the above base station, so that the extraction range can be expanded.
  • determining, according to the interference signal, the CRS sequence of the interference source cell that sends the interference signal may be determined by performing time domain to frequency domain transformation on the interference signal, Obtaining a frequency domain interference signal; determining a symbol of the CRS sequence according to the frequency domain interference signal; and determining a CRS sequence according to the symbol of the CRS sequence.
  • the transforming the time domain to the frequency domain of the interference signal comprises: performing time domain symbol synchronization on the interference signal; and performing time domain to frequency domain on the interference signal with time domain symbol synchronization.
  • the time domain symbol synchronization can be performed by using a cyclic prefix (Cyclic Prefix, abbreviated as CP), which is orthogonal frequency division multiplexing (orthogonal).
  • CP Cyclic Prefix
  • OFDM frequency division multiplexing
  • the frequency division multiplexing (referred to as OFDM) symbol tail repetition feature uses a CP of one OFDM symbol to perform correlation detection with the repeated part, and searches for the interference signal from the back to the front, and the peak position is the symbol synchronization position.
  • the correlation detection can be performed simultaneously with the CP of the plurality of OFDM symbols and the repeated portion.
  • determining the CRS sequence according to the symbol in which the CRS sequence is located includes: determining a value set of the CRS sequence according to a symbol in which the CRS sequence is located; and determining a value of the CRS sequence by using the CRS sequence. The values in the set are traversed and matched to determine the actual value of the above CRS sequence.
  • determining the value set of the CRS sequence according to the symbol of the CRS sequence determining the possible value of the CRS sequence according to the symbol of the CRS sequence, one or more of the determined possible values may exist. The value is the actual value of the CRS sequence.
  • the number of symbols in which the CRS sequence is located may be one or plural.
  • the symbol of the detected CRS sequence is independent of whether there is a Physical Downlink Shared Channel (PDSCH) signal, and may be in the DwPTS, or in a normal downlink subframe, or may be simultaneously distributed. Within DwPTS and normal downlink subframes.
  • PDSCH Physical Downlink Shared Channel
  • determining, by performing traversal matching on the values in the set of values of the CRS sequence, the actual value of the CRS sequence includes: according to the location of the resource block occupied by the CRS sequence in the frequency domain, Determining a subset of values of the CRS sequence in the set of values; determining the actual value of the CRS sequence by performing traversal matching on the values in the subset of values of the CRS sequence.
  • the number of possible values can be further reduced by the above operation, thereby reducing the time of traversing the matching.
  • determining, by using the CRS sequence, the interference source cell includes: determining, according to the cell identifier used when the CRS sequence is generated, the cell identifier of the interference source cell; and according to the cell of the interference source cell The identity identifies the interferer cell.
  • the cell identifier used to generate the CRS sequence may be determined according to the actual value of the CRS sequence, and the cell identifier used to generate the CRS sequence is the foregoing interference source cell. Cell identification.
  • determining the interference source cell according to the cell identifier of the interference source cell includes: determining a distance between the interference source cell and a current cell, and/or determining an orientation of the interference source cell relative to a current cell. And determining the interference source cell according to the determined distance, the azimuth information, and the cell identifier of the interference source cell.
  • the cell identifiers of different cells may be the same. Therefore, the specific interference source cell may not be determined according to the cell identifier.
  • the distance between the interference source cell and the current cell, and the interference are combined. The source cell performs the location of the interference source cell with respect to the orientation information of the current cell, so that the interference source cell can be accurately locked, and the purpose of accurately locating the source of the interference signal is achieved.
  • determining the azimuth information of the interference source cell relative to the current cell includes: determining an arrival angle of the interference signal to the current cell; and determining, according to the angle of arrival, the orientation information of the interference source cell relative to the current cell.
  • the base station may estimate an angle of arrival of the interference signal according to the channel estimation result of the CRS sequence, where the angle of arrival may be obtained according to a phase difference of channel estimation results on different antennas of the CRS sequence, or may be blind The test was obtained.
  • a method for a base station to locate an interference source cell includes:
  • Step S402 the base station performs interference measurement on the received signal, and when there is neighbor cell interference, the base station extracts the interference signal from the received signal;
  • the base station may extract the common uplink time slot or extract the normal uplink time slot and the uplink pilot time slot UpPTS.
  • the base station may extract the common uplink time slot or extract the normal uplink time slot and the uplink pilot time slot UpPTS.
  • the base station may be performed when the local cell is idling.
  • some or all downlink time slots of the base station may be silenced, so that the downlink time slots may also be extracted.
  • the above interference signal may be a downlink pilot time slot DwPTS.
  • Step S404 the base station analyzes and detects the interference signal to obtain an interference cell reference signal sequence, and the detection process is as shown in FIG. 5, including steps S4041-4044:
  • Step S4041 The base station performs time domain symbol synchronization on the interference signal.
  • the method for synchronizing the time domain symbols may include: using the CP to be a characteristic of the tail repetition of the OFDM symbol, performing correlation detection on the CP of the OFDM symbol and the repeated part, and searching for the interference signal from the back to the front, and the peak position is Symbol synchronization position.
  • the correlation detection can be performed simultaneously with the CP of the plurality of OFDM symbols and the repeated portion.
  • Step S4042 The base station performs time-frequency domain transform on the interference signal after the time domain symbol synchronization to obtain a frequency domain interference signal.
  • Step S4043 The base station determines, according to characteristics of the frequency domain signal, a symbol in which the cell reference signal sequence in the interference signal is located;
  • the transmission position of the cell reference signal CRS sequence (which may also be simply referred to as CRS) is fixed, and the transmission power is generally higher than the data symbols.
  • CRS the transmission position of the cell reference signal CRS sequence
  • the transmission power is generally higher than the data symbols.
  • the CRS is fixed at the symbol 0 and 4 of each slot when the single-port prefix is used.
  • the two-port CRS is the same as the single-port occupant, but the number of resource elements is doubled. The number of resources and resource elements is more, and is full bandwidth transmission. According to this feature, it is possible to determine which symbols are symbols for transmitting the CRS.
  • Step S4044 The base station performs a cell reference signal on the symbol where the reference signal sequence is located. Sequence detection, determining a cell reference signal sequence that has interference to the base station;
  • a cell reference signal sequence defined as:
  • pseudo-random sequence c(i) is defined by a Gold sequence of length 31:
  • x 1 (n+31) (x 1 (n+3)+x 1 (n)) mod2
  • x 2 (n+31) (x 2 (n+3)+x 2 (n+2)+x 2 (n+1)+x 2 (n)) mod2
  • N C 1600
  • N CP commonly used for the normal cyclic prefix value of 1, N CP for extended cyclic prefix is 0.
  • N CP , n s and l are all determined.
  • the cell reference signal sequence only matches the cell identifier.
  • the traversal matching of the CRS sequence is independent of whether the interference source base station transmits the PDSCH signal. For example, Time Division Duplex (TDD) special subframe ratio 0 and special subframe ratio 5, DwPTS only contains 3 downlink symbols. At this time, the downlink PDSCH signal is not transmitted in the DwPTS, but the downlink can be sent.
  • the Physical Downlink Control Channel (PDCCH) signal still has a CRS sequence.
  • traversal matching may be performed only on one CRS symbol, and multiple CRS symbols may be matched to improve accuracy.
  • the multiple CRS symbols used for traversing matching may be within the DwPTS only, or within a normal downlink subframe, or simultaneously. Distributed in DwPTS and normal downlink subframes.
  • Step S406 The base station determines a cell identifier of the interference source cell according to the cell identifier used when the cell reference signal sequence is generated.
  • the cell identifier used when the cell reference signal sequence detected in step S4044 is generated may be set as The interference cell identifier can be obtained by the following formula
  • Another method for locating an interference source cell is provided in this embodiment. The method is described below:
  • step S4044 The manner of locating the interference source cell in the embodiment of the present disclosure is mostly the same as the method in the specific embodiment 1, except that step S4044.
  • the range of possible CRS sequences may be narrowed according to the resource element (Resource Element, RE for short) position occupied by the CRS frequency domain. And performing traversal matching on the narrowed-out CRS sequence to obtain a cell reference signal sequence that interferes with the base station.
  • resource element Resource Element, RE for short
  • a cell reference signal sequence Will be mapped to complex modulation symbols
  • used as the reference symbol for the antenna port p in slotn s among them,
  • v and v shift define the position of the frequency domain for different reference signals.
  • the cell identifier used when the detected cell reference signal sequence is generated is The interference cell identifier can be obtained by the following formula
  • a method for locating an interference source cell includes the following steps:
  • Step S702 to step S706 are the same as steps S402-S406 in the specific embodiment 1, or are the same as all the steps in the specific embodiment 2;
  • Step S708 The base station obtains a distance between the interference source cell and the current cell according to the number of interference symbols that the interference signal falls in the uplink time slot of the received signal.
  • the number of interference symbols that the interference signal falls in the uplink time slot of the received signal (including falling in the system uplink pilot time slot and the normal uplink subframe) is N I , and the system protection interval is GP.
  • the corresponding number of symbols is N GP
  • the total length of each symbol including the cyclic prefix is T sym seconds
  • the distance D between the interference source cell and the current cell can be calculated according to the following formula:
  • N I may be an integer or a non-integer, that is, a fractional part may be used.
  • Step S710 The base station estimates an arrival angle of the interference signal according to the channel estimation result of the cell reference signal sequence, and obtains orientation information of the interference source cell relative to the current cell.
  • the angle of arrival of the interference signal may be obtained according to a phase difference of channel estimation results on different antennas of the cell reference signal sequence, or may be obtained according to blind detection.
  • Step S712 The base station determines the interference cell according to the distance information of the interference source cell and the current cell, the azimuth information of the interference source cell with respect to the current cell, and the cell identifier of the interference source cell.
  • a positioning device for the interference source cell is also provided.
  • the device is used to implement the foregoing embodiments and the preferred embodiments, and details are not described herein.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • FIG. 8 is a structural block diagram of a positioning apparatus of an interference source cell according to an embodiment of the present disclosure. As shown in FIG. 8, the apparatus includes an obtaining module 82, a first determining module 84, and a second determining module 86. Description:
  • the obtaining module 82 is configured to acquire an interference signal that interferes with the current cell; the first determining The module 84 is connected to the obtaining module 82, and is configured to determine a cell reference signal CRS sequence of the interference source cell that sends the interference signal according to the interference signal, and the second determining module 86 is connected to the first determining module 84, and is configured to be configured according to The above CRS sequence determines an interference source cell.
  • the acquiring module 82 may obtain, by using at least one of the following manners, an interference signal that interferes with the current cell: acquiring the interference signal in an uplink time slot of the base station to which the current cell belongs; The interference signal is obtained in a downlink time slot of the base station.
  • the acquiring module 82 may acquire the interference signal in an uplink time slot of the base station to which the current cell belongs by acquiring the current time slot in the uplink time slot of the base station when the current cell is in an idle state. In another optional embodiment, the obtaining module 82 may acquire an interference signal in a downlink time slot of a base station to which the current cell belongs by: after placing the downlink time slot in a silent state, at the base station The interference signal is obtained in the downlink time slot.
  • the first determining module 84 may determine, according to the interference signal, a CRS sequence of the interference source cell that sends the interference signal by performing time domain to frequency domain transformation on the interference signal to obtain a frequency. a domain interference signal; determining, according to the frequency domain interference signal, a symbol in which the CRS sequence is located; determining the CRS sequence according to a symbol in which the CRS sequence is located.
  • the first determining module 84 may perform time domain to frequency domain transformation on the interference signal by performing time domain symbol synchronization on the interference signal and time domain symbol synchronization.
  • the interference signal undergoes a time domain to frequency domain transformation.
  • the first determining module 84 may determine a CRS sequence according to a symbol in which the CRS sequence is located by determining a value set of the CRS sequence according to the symbol of the CRS sequence, and by using the CRS sequence. The values in the set of values are traversed to determine the actual value of the CRS sequence.
  • the first determining module 84 may determine the actual take of the CRS sequence by performing traversal matching on the values in the set of values of the CRS sequence. a value: determining, according to the location of the resource block occupied by the CRS sequence in the frequency domain, the obtained subset of the CRS sequence from the foregoing set of values; determining, by performing traversal matching on the values in the subset of values of the CRS sequence The actual value of the CRS sequence.
  • the second determining module 86 may determine, according to the CRS sequence, the interference source cell by: determining, according to the cell identifier used when the CRS sequence is generated, the cell identifier of the interference source cell; according to the interference source cell The cell identity identifies the interferer cell.
  • the second determining module 86 may determine the interference source cell according to the cell identifier of the interference source cell by determining a distance between the interference source cell and the current cell, and/or determining the interference source.
  • the location information of the cell relative to the current cell; the interference source cell is determined according to the determined distance, the location information, and the cell identity of the interference source cell.
  • the determining, by the second determining module 86, the location information of the interference source cell relative to the current cell may be: determining an arrival angle of the interference signal to the current cell; determining interference according to the foregoing angle of arrival.
  • the orientation information of the source cell relative to the current cell may be: determining an arrival angle of the interference signal to the current cell; determining interference according to the foregoing angle of arrival.
  • a base station is also provided, the base station comprising the apparatus described above.
  • a device for locating an interference source cell includes: an interference signal measurement and extraction unit 92 (corresponding to the above-mentioned acquisition module 82), and an interference signal detection unit 94 ( Corresponding to the first determining module 84) and the identifier determining unit 96 (corresponding to the second determining module 86 described above), wherein:
  • the interference signal measuring and extracting unit 92 is configured to perform interference measurement on the received signal by the base station. The amount, when there is neighbor cell interference, the base station extracts the interference signal from the received signal;
  • the interference signal detecting unit 94 is configured to perform analysis and detection on the interference signal by the base station, to obtain an interference cell reference signal sequence;
  • the identifier determining unit 96 is configured to determine, by the base station, the cell identifier of the interference source cell according to the cell identifier used when the interference cell reference signal sequence is generated.
  • the apparatus includes: an interference signal measurement and extraction unit 92, an interference signal detection unit 94, an identifier determination unit 96, and a distance estimation.
  • Unit 102 angle of arrival estimation unit 104, and cell determination unit 106, wherein:
  • the distance estimating unit 102 is configured to obtain distance information of the interference source cell and the current cell according to the number of symbols of the uplink signal slot interference of the received signal according to the interference signal;
  • the angle of arrival estimation unit 104 is configured to estimate an angle of arrival of the interference signal according to a channel estimation result of the interference cell reference signal sequence, and obtain orientation information of the interference source cell relative to the current cell.
  • the cell determining unit 106 is configured to jointly determine the interference cell according to the distance information of the interference source cell and the current cell, the azimuth information of the interference source cell with respect to the current cell, and the interference source cell identity.
  • each of the above modules may be implemented by software or hardware.
  • the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the above modules are in any combination.
  • the forms are located in different processors.
  • Embodiments of the present disclosure also provide a storage medium.
  • the above storage medium may be arranged to store program code for performing the above steps.
  • the foregoing storage medium may include, but is not limited to, a USB flash drive, a Read-Only Memory (ROM), and a Random Access Memory (RAM).
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • the processor performs the above steps according to the stored program code in the storage medium.
  • an electronic device comprising a memory, a processor, and a computer program stored on the memory and operable on the processor, wherein The processor executes the method of any of the above by the computer program.
  • modules or steps of the present disclosure described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module. As such, the disclosure is not limited to any specific combination of hardware and software.
  • the method, device, and base station for locating an interference source cell provided by the embodiments of the present disclosure have the following beneficial effects: solving the problem that the interference source cannot be accurately located in the related art, and the accurate positioning of the interference source is achieved. In addition, the effect of interference is effectively eliminated.

Abstract

La présente invention concerne un procédé et un dispositif destinés à positionner une cellule de source d'interférence, et une station de base. Le procédé consiste : à acquérir un signal d'interférence interférant avec une cellule actuelle ; à déterminer, conformément au signal d'interférence, une séquence de signal de référence de cellule (CRS) de la cellule de source d'interférence transmettant le signal d'interférence ; et à déterminer la cellule de source d'interférence conformément à la séquence CRS. La présente invention permet de résoudre le problème de l'état de la technique associé selon lequel une source d'interférence ne peut pas être positionnée précisément, et les effets de positionnement précis de la source d'interférence et d'élimination efficace de l'interférence sont obtenus.
PCT/CN2017/086397 2016-06-06 2017-05-27 Dispositif et procédé destinés à positionner une cellule de source d'interférence, et station de base WO2017211212A1 (fr)

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