WO2015151446A1 - 通信装置、通信システム、制御方法及び通信プログラム - Google Patents
通信装置、通信システム、制御方法及び通信プログラム Download PDFInfo
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- WO2015151446A1 WO2015151446A1 PCT/JP2015/001583 JP2015001583W WO2015151446A1 WO 2015151446 A1 WO2015151446 A1 WO 2015151446A1 JP 2015001583 W JP2015001583 W JP 2015001583W WO 2015151446 A1 WO2015151446 A1 WO 2015151446A1
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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
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- 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
- H04W16/18—Network planning tools
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
Definitions
- the present disclosure relates to control of a wireless communication network, and control of identification information for identifying a cell in a cellular communication system.
- An example of a cellular communication system is a long-term evolution LTE (Long Term Evolution) system.
- LTE Long Term Evolution
- PCI Physical Cell Identifier
- a SON (Self-Organized Network) functional node assigns a PCI to a cell based on information on neighboring cells. Specifically, based on information on neighboring cells reported from the base station, the SON function node assigns different PCIs to two cells adjacent to each other.
- the SON server checks whether interference (inter-cell interference) to an existing HeNB cell (femtocell) is a problem. If interference is a problem, Correct wireless parameter settings such as antenna tilt angle.
- interference inter-cell interference
- HeNB cell Fremtocell
- the SON function node assigns PCI to all cells included in the information of neighboring cells. For this reason, PCI of all the cells in the adjacency relationship is changed by PCI allocation. Therefore, for example, when the number of adjacent cells is large, the adjacency relationship becomes complicated, so that the processing required for PCI allocation becomes complicated. Therefore, a great load is applied to the SON function node related to the processing.
- an object of one embodiment disclosed in the present specification is to provide an information processing apparatus that solves the above-described problems. It should be noted that this objective is only one of several objectives that the exemplary embodiments disclosed herein are to achieve. Other objects or problems and novel features will become apparent from the description of the present specification or the accompanying drawings.
- the information processing apparatus of this embodiment is A determination unit that determines whether at least a part of the coverage range of the first cell and the coverage range of the second cell overlap; The determination unit determines whether the first cell identification information for identifying the first cell and the second cell identification information assigned in advance for identifying the second cell are the same. A judgment unit for judging based on the result; Have
- the communication system of this embodiment is In a communication system having a management device and a base station connected to the management device,
- the management device A determination unit that determines whether at least a part of the coverage range of the first cell and the coverage range of the second cell overlap;
- the determination unit determines whether the first cell identification information for identifying the first cell and the second cell identification information assigned in advance for identifying the second cell are the same.
- a determination unit for determining based on the result The base station Information obtained based on the determination result of the determination unit is received.
- the method for the information processing apparatus of the present embodiment is as follows: Determining whether at least part of the coverage range of the first cell and the coverage range of the second cell overlap; The determination unit determines whether the first cell identification information for identifying the first cell and the second cell identification information assigned in advance for identifying the second cell are the same. Judging based on the results; Have
- the storage medium of this embodiment is Determining whether at least part of the coverage range of the first cell and the coverage range of the second cell overlap;
- the determination unit determines whether the first cell identification information for identifying the first cell and the second cell identification information assigned in advance for identifying the second cell are the same. Judging based on the results;
- a storage medium storing a program for causing a computer to execute.
- the load on the information processing apparatus can be reduced.
- 1 is a block diagram of an information processing apparatus according to a first exemplary embodiment. It is an example of the overlapping relationship of the coverage range of a 1st cell and the coverage range of a 2nd cell. It is an example of the overlapping relationship of the coverage range of a 1st cell and the coverage range of a 2nd cell. It is a flowchart of operation
- the plurality of exemplary embodiments described below can be implemented independently or in appropriate combinations.
- the plurality of embodiments have different novel features. Therefore, these multiple embodiments contribute to solving different purposes or problems and contribute to producing different effects.
- FIG. 1 shows an example of the configuration of the information processing apparatus in the first exemplary embodiment.
- the information processing apparatus 100 includes at least a determination unit 10 and a determination unit 20.
- the determination unit 10 determines whether at least a part of the coverage range of the first cell and the coverage range of the second cell overlap.
- the determination unit 20 determines whether the first cell identification information for identifying the first cell is the same as the second cell identification information assigned in advance for identifying the second cell. Judgment is made based on the determination result.
- 2A and 2B show an example of the overlapping relationship between the coverage range of the first cell and the coverage range of the second cell.
- 100 is set as the first cell identification information.
- 200 is set as the second cell identification information.
- the first cell identification information and the second cell identification information are information for identifying the first cell and information for identifying the second cell, respectively.
- the first cell identification information and the second cell identification information are already set, but information for identifying the cell is set in one or both cells. It is not necessary.
- step S1 the determination unit 10 determines whether at least a part of the coverage range of the first cell and the coverage range of the second cell overlap. For example, in the case of FIG. 2A, the determination unit 10 determines that at least a part of the coverage range of the first cell and the coverage range of the second cell overlap. In the case of FIG. 2B, the determination unit 10 determines that at least a part of the coverage range of the first cell and the coverage range of the second cell do not overlap. In addition, as long as the determination result represents the determination result, the details of the content do not matter.
- step S ⁇ b> 2 the determination unit 20 determines whether the first cell identification information for identifying the first cell is the same as the second cell identification information assigned in advance for identifying the second cell. Is determined based on the determination result of the determination unit. For example, in the case of FIG. 2A or 2B, since the first cell identification information and the second cell identification information are different, the determination unit 20 determines that the first cell identification information and the second cell identification information are not the same. Judge. Further, if the first cell identification information is not set and the second cell identification information is assigned in advance, the first cell identification information does not exist. It is determined that the cell identification information and the second cell identification information are not at least the same.
- the determination unit 20 determines that the first cell identification information and the second cell identification information are the same.
- the information processing apparatus 100 determines whether or not at least a part of the coverage range of the first cell and the coverage range of the second cell overlap, and the first cell Whether the first cell identification information for identifying the second cell identification information and the second cell identification information assigned in advance for identifying the second cell are the same is determined based on the determination result of the determination unit. Therefore, according to the information processing apparatus 100 in the present embodiment, there is an effect that the load on the information processing apparatus 100 can be reduced.
- FIG. 4 shows an example of the configuration of the information processing apparatus according to the second embodiment.
- the information processing apparatus 200 includes at least a determination unit 10, a determination unit 20, and an extraction unit 30.
- the determination unit 10 and the determination unit 20 are the same as those in the first embodiment.
- the extraction unit 30 extracts identification information candidates for identifying the first cell based on the determination result of the determination unit.
- Step S1 and step S2 are the same as in the first embodiment.
- the extraction unit 30 extracts identification information candidates for identifying the first cell based on the determination result of the determination unit.
- FIG. 6 shows an example of the extraction result by the extraction unit 30.
- the information processing apparatus 200 extracts identification information candidates for identifying the first cell based on the determination result of the determination unit. Therefore, according to the information processing apparatus 200 in the present embodiment, candidates can be extracted.
- FIG. 7 shows an example of the configuration of the information processing apparatus according to the third embodiment.
- the information processing apparatus 300 includes a determination unit 10, a determination unit 20, an extraction unit 30, a transmission / reception unit 40, a calculation unit 50, an information acquisition unit 60, a storage unit 70, an input unit 80, a PCI setting unit 90, a control unit 110, and a display unit. 120 at least.
- the determination unit 10, the determination unit 20, and the extraction unit 30 are the same as those in the second embodiment.
- the transmission / reception unit 40 is connected to an external device in a wired or wireless manner, and transmits or receives various information to and from the external device.
- the calculation unit 50 calculates the coverage range of the first cell and the coverage range of the second cell.
- the calculation unit 50 may calculate either the coverage range of the first cell or the coverage range of the second cell, or may calculate both.
- the stored information may be used.
- the information may be acquired from another device.
- the coverage range may be mapped as a calculation result on, for example, a two-dimensional plane.
- the map is not limited to a two-dimensional plane, but may be a one-dimensional axis or a three-dimensional space.
- the calculation unit 50 may calculate the coverage range of the first cell and the coverage range of the second cell by regarding the coverage range as a two-dimensional plane using two axes.
- the coverage range of the first cell may be calculated using two parameters of latitude and longitude as axes.
- the information acquisition unit 60 acquires the second cell identification information of the second cell. For example, when the second cell identification information of the second cell is stored in the storage unit 70, the information acquisition unit 60 may acquire the information from the storage unit 70. Further, when the information is not stored in the storage unit 70, the information may be obtained from another device. Note that the information acquisition unit 60 may acquire the second cell identification information of the second cell based on the information input to the input unit 80.
- the storage unit 70 stores various information. For example, information related to the coverage range of the first cell, information related to the coverage range of the second cell, second cell identification information of the second cell, and the like are stored.
- the input unit 80 inputs various information. For example, information related to the coverage range of the first cell, information related to the coverage range of the second cell, first cell identification information of the first cell, second cell identification information of the second cell, and the like are input.
- the PCI setting unit 90 sets identification information for identifying the first cell in the first cell.
- the control unit 110 controls each component included in the information processing apparatus 300.
- the display unit 120 displays identification information candidates for identifying the first cell, which are extraction results extracted by the extraction unit 30.
- the information related to the coverage range of the first cell is, for example, latitude information and longitude information indicating the coverage range of the first cell, the antenna tilt angle of the base station subordinate to the first cell, the base station Transmission power, type of base station (for example, information on whether it is a macro cell base station or a micro cell base station), PCI, ECGI (E-UTRAN Cell Global Identifier) set in the first cell, PLMN ID (Public Land Mobile Network Identity), ECI (E-UTRAN Cell Identifier), PSC (Primary Scrambling Code) or altitude information of the base station.
- latitude information and longitude information indicating the coverage range of the first cell
- the antenna tilt angle of the base station subordinate to the first cell the base station Transmission power
- type of base station for example, information on whether it is a macro cell base station or a micro cell base station
- PCI PCI
- E-UTRAN Cell Global Identifier set in the first cell
- PLMN ID Public Land Mobile Network Identity
- ECI E-UTRAN
- the first cell identification information of the first cell is, for example, latitude information and longitude information indicating the coverage range of the first cell, frequency information regarding the frequency used in the first cell, It is information for specifying a cell, such as PCI, ECGI, PLMN ID, ECI, and PSC set in the cell.
- step S1 shown in FIG. 5 First, details of step S1 shown in FIG. 5 will be described with reference to FIG.
- step S4 the determination unit 10 determines whether at least a part of the coverage range of the first cell and the coverage range of the second cell overlap.
- the determination unit 20 It is not determined whether the first cell identification information for identifying the second cell is the same as the second cell identification information assigned in advance for identifying the second cell. As described above, since the determination unit 20 operates based on the determination result, the determination unit 20 operates only when a determination is necessary. Thereby, power saving and load reduction of the information processing apparatus 300 are possible.
- step S4 when the determination result of step S4 indicates that “at least a part of the coverage range of the first cell and the coverage range of the second cell overlaps” (step S4: YES), the determination unit 20 It is determined whether or not it is determined whether or not the first cell identification information for identifying the first cell is the same as the second cell identification information assigned in advance for identifying the second cell. . For example, it is selected whether or not to determine whether or not the first frequency information as the first cell identification information and the second frequency information as the second cell identification information are the same (step S5). .
- step S5 indicates that “the first frequency information as the first cell identification information and the second frequency information as the second cell identification information are not determined to be the same”.
- step S5: NO the determination unit 20 compares the first PCI information of the first cell with the second PCI information of the second cell. Details regarding this comparison processing will be described in the explanation after step S10 in FIG.
- step S5 is “determining whether or not the first frequency information as the first cell identification information and the second frequency information as the second cell identification information are the same”.
- step S5: YES the determination unit 20 compares the first frequency information of the first cell with the second frequency information of the second cell.
- FIG. 9 will be used to describe the subsequent processing when the determination result in step S5 of FIG. 8 is YES.
- step S5 in FIG. 8 If the decision result in the step S5 in FIG. 8 is YES, the process in the step S6 in FIG. 9 is performed.
- step S6 the determination unit 20 determines whether the first frequency information of the first cell and the second frequency information of the second cell are the same.
- step S7 ⁇ When the first frequency information and the second frequency information are different>
- the determination result of step S6 indicates that “the first frequency information of the first cell and the second frequency information of the second cell are different” (step S6: different)
- step S7 whether or not the determination unit 20 performs a PCI information determination process for determining whether or not the first PCI information of the first cell is the same as the second PCI information of the second cell. Select.
- step S7 when the determination unit 20 selects not to perform the PCI information determination process (step S7: NO), the extraction unit 30 extracts identification information candidates for identifying the first cell. Absent.
- the extraction unit 30 since the extraction unit 30 operates based on the determination result of the determination unit 20, it can be configured to be executed only when the extraction process of the extraction unit 30 is necessary. That is, since the hardware or software processing related to the extraction unit 30 is configured to be performed only when a predetermined condition is satisfied, power saving and load reduction of the entire information processing apparatus 300 including the extraction unit 30 can be achieved.
- step S7 determines whether the first PCI information of the first cell and the second PCI information. Compare with the second PCI information of the cell. Details regarding this comparison processing will be described in the explanation after step S10 in FIG.
- step S6 When it is unknown whether the first frequency information and the second frequency information are the same>
- step S8 the process of step S8 is performed.
- step S8 the determination unit 20 selects whether to determine whether the first PCI information of the first cell and the second PCI information of the second cell are the same.
- step S6 indicates that “the first frequency information of the first cell and the second frequency information of the second cell are the same or not” is, for example, This is a case where the comparison target is missing, such as when at least one of the first frequency information and the second frequency information is not set.
- step S8: NO When it is selected not to determine whether or not the first PCI information and the second PCI information are the same in step S8 (step S8: NO), the extracting unit 30 is based on the determination result of the determining unit 20. The candidate of the identification information for identifying the first cell is extracted. On the other hand, when it is selected in step S8 whether or not the first PCI information and the second PCI information are the same (step S8: YES), the determination unit 20 determines whether the first PCI information is the same as the first PCI information. The first PCI information is compared with the second PCI information of the second cell. Details regarding this comparison processing will be described in the explanation after step S10 in FIG.
- step S9 Perform the process. In step S9, it is selected whether or not to perform a PCI information determination process for determining whether or not the first PCI information of the first cell is the same as the second PCI information of the second cell.
- step S9 when the determination unit 20 selects not to execute the PCI information determination process (step S9: NO), the extraction unit 30 identifies the first cell based on the determination result of the determination unit. Extract identification information candidates. On the other hand, when it is selected in step S9 whether or not the first PCI information and the second PCI information are the same (step S9: YES), the determination unit 20 determines the first cell information of the first cell. Compare one PCI information with the second PCI information of the second cell. Details regarding this comparison processing will be described in the explanation after step S10 in FIG.
- step S10 the determination unit 20 determines whether or not the first PCI information of the first cell is the same as the second PCI information of the second cell.
- step S10 When the determination result of step S10 indicates that “the first PCI information of the first cell is different from the second PCI information of the second cell” (step S10: different), the process of step S11 is performed. . In step S11, it is selected whether or not to perform frequency information determination processing for determining whether or not the first frequency information of the first cell is the same as the second frequency information of the second cell.
- step S11 when the determination unit 20 selects not to perform frequency information determination processing (step S11: NO), the extraction unit 30 extracts identification information candidates for identifying the first cell. Absent.
- the extraction unit 30 since the extraction unit 30 operates based on the determination result of the determination unit 20, it can be configured to be executed only when the extraction process of the extraction unit 30 is necessary. That is, since the hardware or software processing related to the extraction unit 30 is configured to be performed only when a predetermined condition is satisfied, power saving and load reduction of the entire information processing apparatus 300 including the extraction unit 30 can be achieved.
- step S11 determines the first frequency information and the second cell of the first cell. Is compared with the second frequency information.
- step S10 When it is unknown whether the first PCI information and the second PCI information are the same>
- step S10 Unknown
- the process of step S12 is performed. In step S12, it is selected whether or not to perform frequency information determination processing for determining whether or not the first frequency information of the first cell and the second frequency information of the second cell are the same.
- step S10 indicates that “the first PCI information of the first cell and the second PCI information of the second cell are the same or not” is, for example, This is a case where the comparison target is missing, such as when at least one of the first PCI information of the first cell and the second PCI information of the second cell is not set.
- step S12 determines whether the frequency information determination process is performed in step S12 (step S12: NO) in step S12. If the determination unit 20 selects not to perform the frequency information determination process (step S12: NO) in step S12, the extraction unit 30 identifies the first cell based on the determination result of the determination unit. Extract information candidates. On the other hand, when the determination unit 20 selects that the frequency information determination process is performed in step S12 (step S12: YES), the determination unit 20 determines the first frequency information of the first cell and the second cell. Is compared with the second frequency information.
- step S13 Perform the process. In step 13, it is selected whether or not to perform frequency information determination processing for determining whether or not the first frequency information of the first cell and the second frequency information of the second cell are the same.
- step S13 when the determination unit 20 selects not to perform the frequency information determination process (step S13: NO), the extraction unit 30 identifies the first cell based on the determination result of the determination unit. Extract identification information candidates.
- step S13: YES when the determination unit 20 selects that the frequency information determination process is performed in step S13 (step S13: YES), the determination unit 20 determines the first frequency information of the first cell and the second cell. Is compared with the second frequency information.
- step S7, S8, S9, S11, S12, and S13 is implemented by the determination part 20, it is not limited to the information processing apparatus 300, The operator who operates the information processing apparatus 300, Information processing apparatus 300, and A base station, a control device, an EMS (Element Management System) device, or the like that performs wired communication or wireless communication may be used.
- EMS Element Management System
- YES when YES is selected in step S7, it may be set not to select YES in steps S11, S12, and S13.
- FIG. 11 shows a setting operation of cell identification information in the information processing apparatus 300.
- the input unit 80 inputs various information.
- the input information may be information stored in the storage unit 70 inside the information processing apparatus 300.
- an entity that inputs information includes an operator who operates the information processing device 300, a base station that performs wired communication or wireless communication with the information processing device 300, a control device that controls the base station (for example, Mobility Management Entity (MME)), An EMS device or the like may be used.
- MME Mobility Management Entity
- An EMS device or the like may be used.
- step 15 the calculation unit 50 calculates the coverage range of the first cell and the coverage range of the second cell based on the information input to the input unit 80 in step 14.
- the calculation unit 50 may calculate either the coverage range of the first cell or the coverage range of the second cell, or may calculate both. Moreover, when the information regarding the coverage range of the first cell or the coverage range of the second cell is stored in the storage unit 70, the stored information may be used. Furthermore, when the information is not stored in the storage unit 70, the information may be acquired from another device.
- the coverage range may be mapped on the calculation result, for example, on a two-dimensional plane.
- the map is not limited to a two-dimensional plane, but may be a one-dimensional axis or a three-dimensional space.
- Step S1, Step S2, and Step 3 are the same as those in the first and second embodiments.
- step S16 the display unit 120 displays identification information candidates for identifying the first cell, which are extraction results extracted by the extraction unit 30.
- step 17 the information processing apparatus 300 selects identification information for identifying the first cell based on the display on the display unit 120.
- the entity to be selected is not limited to the information processing device 300, but may be an operator who operates the information processing device 300, a base station that performs wired communication or wireless communication with the information processing device 300, a control device, an EMS device, or the like.
- step S16 may be omitted, and the process may proceed to step S17 without displaying identification information candidates for identifying the first cell extracted in step S3.
- identification information for identifying the first cell may be selected based on the information extracted in step S3.
- step 18 the PCI setting unit 90 sets identification information for identifying the first cell in the first cell.
- the determination unit 20 and the extraction unit 30 can be operated when necessary based on the determination result of the determination unit 10 and the determination result of the determination unit 20. That is, according to the information processing apparatus 300 in the present embodiment, whether or not the determination unit 20 and the extraction unit 30 are operated can be finely controlled, and thus power saving and load reduction of the information processing apparatus 300 are possible.
- FIG. 12 when a part of the present embodiment is applied to, for example, a system including the EMS device 310 and the base station 320, a configuration as shown in FIG. 12 can be considered.
- the EMS device 310 can perform wireless communication or wired communication with the base station 320.
- the EMS device 310 can determine a PCI to be assigned to the base station 320.
- the base station 320 can perform wireless communication or wired communication with the EMS device 310.
- the base station 320 can accept the PCI assigned by the EMS device 310 as its own PCI.
- the PCI accepting unit 130 accepts the PCI assigned by the EMS device 310 as its own PCI.
- the transmission / reception unit 43 transmits / receives various information to / from the EMS device 310 by wireless communication or wired communication.
- FIG. 13 shows an example of the configuration of a communication system 600 according to the fourth embodiment.
- the communication system 600 shown in FIG. 13 includes an EMS device 400 for managing each device (element) constituting a network, and an EMS client device 500 managed by the EMS device 400.
- the EMS device 400 includes at least a PCI control unit 95, an adjacent cell addition instruction unit 140, a base station information management unit 150, a station building control unit 160, a transmission / reception unit 40, and a control unit 170.
- the PCI control unit 95 includes at least the storage unit 70, the calculation unit 50, the determination unit 20, and the extraction unit 30 of the third embodiment described above.
- the base station information management unit 150 includes at least the determination unit 10 and the information acquisition unit 60 of the third embodiment.
- the transmission / reception unit 40 is connected to an external device in a wired or wireless manner, and transmits or receives various information to and from the external device.
- the control unit 170 controls each component included in the EMS device 400.
- the EMS client device 500 includes a GUI (Graphical User Interface) unit 125, a GUI processing unit 180, and a transmission / reception unit 45.
- GUI Graphic User Interface
- the GUI unit 125 When the GUI processing unit 180 is instructed to output information, the GUI unit 125 outputs the information, and notifies the GUI processing unit 180 of information input from the outside.
- the GUI unit 125 includes at least a part of the input unit 80 and the display unit 120 of the third embodiment.
- the GUI processing unit 180 instructs the GUI unit 125 to output information, and outputs information input from the outside to the GUI unit 125 to the transmission / reception unit 45. Further, the GUI processing unit 180 may include at least a part of the input unit 80 of the third embodiment.
- base station system parameters including latitude and longitude information, neighboring cell information, cell size, and the like of the base station to be built are input to the GUI unit 125.
- the PCI control unit 180 transmits the already input latitude / longitude information, PCI, and Cell Radius parameters through the transmission / reception units 45 and 40. Pass to 95.
- the Cell Radius parameter is an example of an indication of the radius of the coverage area of the cell.
- the PCI control unit 95 uses the latitude / longitude information and the Cell Radius parameter to calculate the coverage area of the base station cell based on the latitude / longitude information. Thereafter, the PCI control unit 95 inquires of the base station information management unit 150 whether there is a cell that overlaps at least a part of the coverage range of the calculated base station cell.
- the cell coverage range corresponds to the LTE cell range in the LTE system.
- the base station information management unit 150 passes the PCI of the existing base station having a cell range that overlaps the coverage range of the cell of the base station built in the station to the PCI control unit 95.
- the PCI control unit 95 checks whether or not the PCI of the existing base station with the overlapping coverage range received from the base station information management unit 140 is the same as the input PCI of the base station built in the station.
- the GUI processing unit 180 displays on the GUI unit 125 that the input PCI is the same as the PCI of the existing base station. In addition, a message indicating that the received PCI list of existing base stations should not be used is displayed on the GUI unit 125.
- the GUI processing unit 180 when the GUI processing unit 180 receives an operation for displaying the neighboring cell setting screen of the station base station to be built from an external device, the GUI processing unit 180 makes a recommended neighboring cell PCI acquisition request to the PCI control unit 95.
- This request includes the frequency band of the cell.
- the PCI control unit 95 Upon receiving the recommended neighboring cell PCI acquisition request, the PCI control unit 95 passes the information on the latitude and longitude of the coverage range of the base station cell that has already been calculated to the base station information management unit 150, and this value overlaps the existing base The station PCI and the frequency of the cell to which the PCI is assigned are obtained.
- the PCI control unit 95 lists PCIs for each Inter Frequency and Intra Frequency based on the information acquired from the base station information management unit 150 and passes the PCIs to the GUI processing unit 180.
- the GUI processing unit 180 displays the PCI list received from the PCI control unit 95 as “recommended neighboring cell information”.
- FIG. 14 is a flowchart showing the operation of the EMS apparatus 400 when setting the PCI of the base station built in the station.
- step A1 the GUI processing unit 130 detects that various types of information have been input to the GUI unit 125.
- various information for example, input latitude, longitude (including direction), and Cell Radius (LTE cell radius) are accepted.
- Cell Radius (CR) is not limited to an operator input value, and a predetermined value (for example, a default value) is also valid.
- step A2 the PCI control unit 95 that has received the information detected by the GUI processing unit 130 calculates the coverage area of the base station cell.
- the information regarding the coverage area of the cell of the base station built in the station is temporarily stored in the EMS device 400 until the station building is completed, and stored in the base station information management unit 150 when the station building is completed. If the station building is interrupted, it will be destroyed.
- step A3 the PCI control unit 95 compares the cell coverage range of the existing base station stored in advance in the base station information management unit 150 with the cell coverage range of the base station built in advance, and Check if there is a cell that overlaps even part.
- step A3 when there is no existing base station with overlapping coverage ranges (step A3: NO), the accepted PCI is used as it is as a system parameter.
- the PCI of the cell with the closest latitude / longitude position may be acquired and the process may proceed to A5.
- step A3 when there are existing base stations with overlapping coverage ranges (step A3: YES), the process proceeds to step A4, and a PCI list of the existing base stations determined in A3 is acquired.
- step A5 the GUI unit 125 displays that the input PCI may be confused. For example, a message such as “There is a possibility that PCI Confusion is detected because the input PCI: xxx overlaps with a neighboring cell” is displayed on the GUI unit 125.
- an operation such as “Ignore and continue” may be permitted in order to allow the received value to be used as a system parameter only by notification as information.
- Confusion means that the PCIs of two cells that are adjacent to each other are the same. If the PCIs are the same, there arises a problem that serious interference may occur between cells.
- step A6 the PCI that may be confused is displayed on the GUI unit 125.
- the PCI list acquired in A4 is displayed on the GUI as “PCI existing in the vicinity”.
- step A7 it is determined whether duplicate PCI is accepted.
- the input PCI is set in the base station built locally.
- FIG. 16 is a flowchart showing the operation of the EMS device 400 when setting the adjacent cell of the base station built in the station.
- step A8 in FIG. 14 the operator is requested to accept a screen for registering the neighboring cell of the base station to be built. Further, the cell range information calculated in step A2 in FIG. 14 is read from a memory or the like, and a frequency band that has already been set is acquired.
- the default values may be acquired.
- step B2 information regarding the cell is acquired from the base station information management unit 150 in order to compare whether the coverage range acquired in step B1 overlaps the coverage range of the existing base station. Furthermore, it is confirmed whether there is an existing base station with overlapping coverage areas.
- step B2 When it is determined in step B2 that there are no existing base stations with overlapping coverage ranges (step B2: NO), an adjacent cell setting screen is displayed on the GUI unit 125. However, it is also possible to acquire the PCI of the existing base station that is closest in geography and perform the operations after step B3.
- step B3 when it is determined in step B2 that there are existing base stations with overlapping coverage ranges (step B2: YES), the process of step B3 is performed.
- step B3 information on existing base stations with overlapping coverage ranges is acquired. Specifically, the frequency band and PCI of an existing base station with overlapping coverage ranges are acquired from the base station information management screen.
- the acquired PCI may be held as a PCI list.
- the PCI list may be a list of PCIs of existing base stations for each frequency band.
- a list may be divided into PCI (Inter Frequency) in a frequency band different from the base station built in the station and PCI (Intra Frequency) in the same frequency band as the base station built in the station.
- PCI Inter Frequency
- PCI Intra Frequency
- step B4 the neighboring cell setting screen is displayed on the GUI unit 125 in a state where the recommended PCI is displayed. Specifically, the adjacent cell setting screen is displayed in a state where the recommended adjacent cell is displayed based on the created list.
- step B6 an adjacent cell is set.
- FIG. 16 can be applied to existing base stations as well as base stations built in the station.
- PCI information set for a base station built in a station may be applied to update the adjacent cell list of an adjacent base station.
- step A6 of FIG. 14 the PCI that may be confused is displayed on the GUI unit 125, but the PCI that is not likely to be confused may be displayed on the GUI unit 125.
- the management device 700 can perform wireless communication or wired communication with the base station 800.
- the management apparatus 700 includes a determination unit 10, a determination unit 20, and a transmission / reception unit 40.
- the base station 800 includes a transmission / reception unit 45 and can perform wireless communication or wired communication with the management apparatus 700.
- the transmission / reception unit 45 transmits / receives various information to / from the management device 700 by wireless communication or wired communication.
- the information processing apparatus 100 determines whether or not at least a part of the coverage range of the first cell and the coverage range of the second cell overlap, and the first cell Whether the first cell identification information for identifying the second cell identification information and the second cell identification information assigned in advance for identifying the second cell are the same is determined based on the determination result of the determination unit. Therefore, according to the information processing apparatus 100 in the present embodiment, there is an effect that the load on the information processing apparatus 100 can be reduced. Also, as one of the effects of the above embodiment, PCI is set in advance in the base station. By doing so, it is possible to avoid bursts of control signals related to PCI allocation by existing SON function nodes (a lot of messages fly in a short time). As a result, it is possible to reduce the load on the network itself such as a base station and a node management device (for example, an EMS device) as well as a node equipped with the SON function.
- a node management device for example, an EMS device
- Each process of the above-described embodiment may be executed by software. That is, a computer program for performing each process may be read and executed by a CPU (Central Processing Unit) included in the communication apparatus. Even if each process is performed using a program, the same process as the process of the above-described embodiment can be performed.
- the above program may be stored in a non-transitory medium such as a ROM (Read Only Memory), a RAM (Random Access Memory), a semiconductor memory device such as a flash memory, an optical disk, a magnetic disk, or a magneto-optical disk. .
- cell used in the present specification and claims means a base station, a coverage range of a base station, a sector, or a combination thereof.
- frequency used in the present specification and claims means a frequency and a frequency band or a combination thereof from time to time.
- the term information processing device used in the present specification and claims means a base station, a control device, a SON function node, an EMS device, or a combination thereof from time to time.
- the control device may be a device that is inside the base station and controls the base station itself, or a device that is outside the base station and controls the subordinate base stations.
- the extraction unit 30 of the above-described embodiment may extract a PCI that may be confused as a candidate for identification information for identifying the first cell, or may extract a PCI that is not likely to be confused. You may do it.
- the determination part which determines whether at least one part of the coverage range of a 1st cell and the coverage range of a 2nd cell overlaps, and the 1st for identifying said 1st cell
- a determination unit that determines whether or not the cell identification information is the same as the second cell identification information assigned in advance to identify the second cell based on a determination result of the determination unit; Processing equipment.
- the information processing apparatus according to supplementary note 1, further comprising: an extraction unit that extracts identification information candidates for identifying the first cell based on a determination result of the determination unit.
- the first cell identification information and the second cell identification information include at least one of frequency information and PCI information, and the frequency information indicates information about the frequency, 5.
- the information processing apparatus according to any one of attachments 3 and 4, wherein the PCI information indicates information related to a PCI assigned to a cell.
- Appendix 6 The information processing apparatus according to appendix 5, wherein the determination unit does not make the determination when the determination result of the determination unit indicates a second condition.
- the information processing device according to supplementary note 7, further including an information acquisition unit that acquires the second cell identification information.
- the determination unit If the first frequency information in the first cell identification information is the same as the second frequency information in the second cell identification information, the determination unit outputs a third notification.
- the determination unit If the first PCI information in the first cell identification information is different from the second PCI information in the second cell identification information, the determination unit outputs a fourth notification.
- the determination unit If the first PCI information in the first cell identification information is the same as the second PCI information in the second cell identification information, the determination unit outputs a sixth notification.
- the parameter is at least one of information on latitude, information on longitude, information on altitude, information on antenna height, information on radio wave radiation direction, and a parameter representing a coverage range.
- Information processing device is configured to process information on latitude, information on longitude, information on altitude, information on antenna height, information on radio wave radiation direction, and a parameter representing a coverage range.
- Additional remark 25 The information processing apparatus according to additional remark 24 having a display unit for displaying output information.
- the information processing apparatus including a calculation unit that calculates a cell space.
- Information processing apparatus 100, 200, 300 Information processing apparatus 10 Determination unit 20 Determination unit 30 Extraction unit 40, 43, 45 Transmission / reception unit 50 Calculation unit 60 Information acquisition unit 70 Storage unit 80 Input unit 90 PCI setting unit 95 PCI control unit 110 Control unit 120, DESCRIPTION OF SYMBOLS 125 Display part 130 PCI reception part 150 Base station information management part 180 GUI processing part 310,400 EMS apparatus 320 Base station 500 EMS client apparatus 600 Communication system
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Abstract
Description
なお、特許文献2では、SONサーバが、既存のHeNBのセル(フェムトセル)への干渉(セル間干渉)が問題となるかチェックし、干渉が問題となる場合、設置するeNBの送信電力、アンテナチルト角等の無線パラメータの設定を補正する。ただし、PCIのようなセル識別情報の割当を制御することに関する開示は、ない。
第一のセルのカバレッジ範囲と第二のセルのカバレッジ範囲の少なくとも一部が重複しているか否かを判定する判定部と、
前記第一のセルを識別するための第一のセル識別情報と、前記第二のセルを識別するため予め割り当てられた第二のセル識別情報とが同一か否かを、前記判定部の判定結果に基づき判断する判断部と、
を有する。
管理装置と、前記管理装置と接続する基地局とを有する通信システムにおいて、
前記管理装置は、
第一のセルのカバレッジ範囲と第二のセルのカバレッジ範囲の少なくとも一部が重複しているか否かを判定する判定部と、
前記第一のセルを識別するための第一のセル識別情報と、前記第二のセルを識別するため予め割り当てられた第二のセル識別情報とが同一か否かを、前記判定部の判定結果に基づき判断する判断部と、を有し、
前記基地局は、
前記判断部の判断の結果に基づき得られた情報を受信する。
第一のセルのカバレッジ範囲と第二のセルのカバレッジ範囲の少なくとも一部が重複しているか否かを判定する工程と、
前記第一のセルを識別するための第一のセル識別情報と、前記第二のセルを識別するため予め割り当てられた第二のセル識別情報とが同一か否かを、前記判定部の判定結果に基づき判断する工程と、
を有する。
第一のセルのカバレッジ範囲と第二のセルのカバレッジ範囲の少なくとも一部が重複しているか否かを判定する工程と、
前記第一のセルを識別するための第一のセル識別情報と、前記第二のセルを識別するため予め割り当てられた第二のセル識別情報とが同一か否かを、前記判定部の判定結果に基づき判断する工程と、
をコンピュータに実行させるためのプログラムが記憶された記憶媒体。
図1は、第1の例示的な実施形態における情報処理装置の構成の一例を示す。
本実施形態では、上述した第1の実施形態の変形例について説明する。
本実施形態では、上述した第1又は第2の実施形態の変形例について説明する。
ステップS6の判断結果が「第一のセルの第一の周波数情報と第二のセルの第二の周波数情報とが異なる」ことを示す場合(ステップS6:異なる)、ステップS7の処理を行う。ステップS7では、判断部20が、第一のセルの第一のPCI情報と、第二のセルの第二のPCI情報とが同一か否かを判断するPCI情報の判断処理を実施するか否かを選択する。
次に、ステップS6の判断結果が「第一のセルの第一の周波数情報と、第二のセルの第二の周波数情報とが同一か否か不明である」ことを示す場合(ステップS6:不明)、ステップS8の処理を実施する。ステップS8では、判断部20が、第一のセルの第一のPCI情報と、第二のセルの第二のPCI情報とが同一か否かを判断するか否かを選択する。
また、ステップS6の判断結果が「第一のセルの第一の周波数情報と、第二のセルの第二の周波数情報とが同一である」ことを示す場合(ステップS6:同一)、ステップS9の処理を行う。ステップS9では、第一のセルの第一のPCI情報と、第二のセルの第二のPCI情報とが同一か否かを判断するPCI情報の判断処理を実施するか否かを選択する。
ステップS10の判断結果が「第一のセルの第一のPCI情報と、第二のセルの第二のPCI情報とは異なる」ことを示す場合(ステップS10:異なる)、ステップS11の処理を行う。ステップS11では、第一のセルの第一の周波数情報と、第二のセルの第二の周波数情報とが同一か否かを判断する周波数情報の判断処理を実施するか否かを選択する。
次に、ステップS10の判断結果が「第一のセルの第一のPCI情報と、第二のセルの第二のPCI情報とが同一か否か不明である」ことを示す場合(ステップS10:不明)、ステップS12の処理を行う。ステップS12では、第一のセルの第一の周波数情報と、第二のセルの第二の周波数情報とが同一か否かを判断する周波数情報の判断処理を実施するか否かを選択する。
また、ステップS10の判断結果が「第一のセルの第一のPCI情報と、第二のセルの第二のPCI情報とが同一である」ことを示す場合(ステップS10:同一)、ステップS13の処理を行う。ステップ13では、第一のセルの第一の周波数情報と、第二のセルの第二の周波数情報とが同一か否かを判断する周波数情報の判断処理を実施するか否かを選択する。
本実施形態では、上述した第1、第2又は第3の実施形態の変形例について説明する。
X = sin45°* (360°* Cell Radius / 6378.137)
緯度差分:
Y = cos45°* (360 * Cell Radius / 6378.137)
6378.137 = 地球の半径[km]
よって局建する基地局のセルのカバレッジ範囲は以下のようになる。
基地局の緯度 - Y ≦ セル範囲(緯度) ≦ 基地局の緯度 + Y
基地局の経度 - X ≦ セル範囲(緯度) ≦ 基地局の経度 + X
ただし、値がマイナスになる場合は方角を反転する。
また、以上の実施形態の効果の1つとして、基地局に事前にPCIを設定することで既存のSON機能ノードによるPCI割り当てに関する制御信号のバースト(短時間にたくさんメッセージが飛ぶこと)を回避することができる。これによりSON機能を搭載したノードはもちろん、基地局やノードマネージメント装置(例えばEMS装置)などネットワーク自体の負荷も削減することができる。
(付記29)
第一のセルのカバレッジ範囲と第二のセルのカバレッジ範囲の少なくとも一部が重複しているか否かを判定する工程と、
前記第一のセルを識別するための第一のセル識別情報と、前記第二のセルを識別するため予め割り当てられた第二のセル識別情報とが同一か否かを、前記判定部の判定結果に基づき判断する工程と、
をコンピュータに実行させるプログラム。
また、この出願は、2014年3月31日に出願された日本出願特願2014-070720を基礎とする優先権を主張し、その開示の全てをここに取り込む。
10 判定部
20 判断部
30 抽出部
40、43、45 送受信部
50 計算部
60 情報取得部
70 記憶部
80 入力部
90 PCI設定部
95 PCI制御部
110 制御部
120、125 表示部
130 PCI受付部
150 基地局情報管理部
180 GUI処理部
310、400 EMS装置
320 基地局
500 EMSクライアント装置
600 通信システム
Claims (10)
- 第一のセルのカバレッジ範囲と第二のセルのカバレッジ範囲の少なくとも一部が重複しているか否かを判定する判定部と、
前記第一のセルを識別するための第一のセル識別情報と、前記第二のセルを識別するため予め割り当てられた第二のセル識別情報とが同一か否かを、前記判定部の判定結果に基づき判断する判断部と、
を有する、
情報処理装置。 - 前記判断部の判断結果に基づき、前記第一のセルを識別するための識別情報の候補を抽出する抽出部を有する、
請求項1に記載の情報処理装置。 - 前記判断部の判断結果が第一の条件を示す場合、前記抽出部は前記抽出を行わない、
請求項2に記載の情報処理装置。 - 前記判断結果が第一の条件を示す場合とは、
前記第一のセル識別情報と前記第二のセル識別情報とが異なる場合である、
請求項3に記載の情報処理装置。 - 前記第一のセル識別情報および前記第二のセル識別情報とは、
周波数情報と、PCI情報の、少なくともいずれか1つを含み、
前記周波数情報とは、周波数に関する情報を示し、
前記PCI情報とは、セルに割り当てられるPCIに関する情報を示す、
請求項3または4の何れか1項に記載の情報処理装置。 - 前記判定部の判定結果が第二の条件を示す場合、前記判断部は前記判断を行わない、
請求項5に記載の情報処理装置。 - 前記判定結果が第二の条件を示す場合とは、
前記第一のセルのカバレッジ範囲と前記第二のセルのカバレッジ範囲の少なくとも一部が重複していない場合である、
請求項6に記載の情報処理装置。 - 管理装置と、前記管理装置と接続する基地局とを有する通信システムにおいて、
前記管理装置は、
第一のセルのカバレッジ範囲と第二のセルのカバレッジ範囲の少なくとも一部が重複しているか否かを判定する判定部と、
前記第一のセルを識別するための第一のセル識別情報と、前記第二のセルを識別するため予め割り当てられた第二のセル識別情報とが同一か否かを、前記判定部の判定結果に基づき判断する判断部と、を有し、
前記基地局は、
前記判断部の判断の結果に基づき得られた情報を受信する、
通信システム。 - 第一のセルのカバレッジ範囲と第二のセルのカバレッジ範囲の少なくとも一部が重複しているか否かを判定する工程と、
前記第一のセルを識別するための第一のセル識別情報と、前記第二のセルを識別するため予め割り当てられた第二のセル識別情報とが同一か否かを、前記判定部の判定結果に基づき判断する工程と、
を有する、
情報処理装置のための方法。 - 第一のセルのカバレッジ範囲と第二のセルのカバレッジ範囲の少なくとも一部が重複しているか否かを判定する工程と、
前記第一のセルを識別するための第一のセル識別情報と、前記第二のセルを識別するため予め割り当てられた第二のセル識別情報とが同一か否かを、前記判定部の判定結果に基づき判断する工程と、
を実行させるためのプログラムが記憶された記憶媒体。
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