JP6409768B2 - Wireless network control method and system, network operation management apparatus, and wireless station - Google Patents

Description

  The present invention relates to a radio communication system, and more particularly to a radio network control method and system for controlling radio parameters of a radio station, a network operation management apparatus, and a radio station.

In recent years, from the viewpoint of reducing operation costs (OPEX), SON (Self Organizing Network) that autonomously optimizes wireless parameters and network settings in a wireless communication system such as a cellular system has been actively studied. ^{3GPP (3 rd Generation Partnership Project)} LTE standardization also SON function in (Long Term Evolution) has been conducted (Non-patent Document 1).

For SON,
・ Self-Configuration
・ Self-Optimization
・ Self-Healing

This is a technology for achieving different purposes. The types of self-optimization include cell coverage optimization, capacity optimization (Coverage and Capacity Optimization: CCO), handover parameter optimization (Mobility Robustness Optimization: MRO), and load balancing. There is optimization (Mobility Load Balancing: MLB) and the like (Non-Patent Document 2).

  SON recognizes problems using radio quality information reported from terminals and communication quality statistical information collected by base stations, and autonomously optimizes base station radio parameters so that the problems can be improved. Turn into. Information defined by 3GPP is used as information reported from the terminal, but many SONs currently under study use the radio quality measured by the terminal in the radio connection state (RRC Connected state). .

  On the other hand, 3GPP Release 10 newly defines MDT (Minimization of Drive Test) for the purpose of minimizing (minimizing) driving tests related to operation management of wireless networks. In MDT, an immediate report mode (Immediate MDT) in which a terminal in a wireless connection state performs measurement and reporting, and a terminal in an idle state (RRC Idle state) record measurement results and report when the wireless connection state is established. The recording report mode (Logged MDT) is defined. Further, the information that is the measurement target includes not only the wireless quality information but also the position information of the measurement terminal.

  Therefore, in SON, base station parameters can be optimized based on the radio quality information measured by the terminal in the immediate report mode or the record report mode.

  Patent Document 1 discloses a method for performing parameter control based on an actual cell size by counting measurement information for each preset divided area and determining whether or not it is within a radio area of a base station. Is disclosed. Furthermore, Patent Literature 2 discloses a radio base station that detects a communicable area by using map data divided into a plurality of area blocks and associating it with information related to a mobile terminal.

JP 2012-231236 A JP 2012-248957 A

3GPP TS36.300v11.4.0, section 22 (Internet <URL> http: www.3gpp.org/ftp/Specs/html-info/36300.htm) 3GPP TR36.902 v9.3.0 (Internet <URL> http: www.3gpp.org/ftp/Specs/html-info/36902.htm)

  However, in an actual cellular system or the like, a large number of terminals are not uniformly distributed in the cell, and various situations or various problems associated therewith may occur depending on the location in the cell.

  For example, as shown in FIG. 1, if there is a meeting spot 2 in the radio cell C1 managed by the base station 1, many unspecified users gather there, and if there is a company building, many corporate users come in and out. . As described above, even within the same cell, the area situation differs depending on the location, and the importance of the area varies accordingly.

  In response to such a situation, the base station 1 processes all measurement reports from the terminals together, and does not consider special situations such as the meeting spot 2 and the building 3. As described above, since the quality of the conventional SON can be grasped only in units of cells or cell pairs, it can uniformly cope with various situations and problems in the cell. However, if the number of terminal reports in a certain area is large, as a result, the area is considered in the SON control. However, even in this case, reports from the terminal and the base station are not always collected at the time of measurement of the SON control when the temporal variation of the user distribution is large.

  Further, Patent Document 1 discloses a parameter control method for accurately estimating an actual cell size, and the situation and importance depending on the place as described above are different, and the problem to be dealt with is different accordingly. Not recognized. Similarly, Patent Document 2 aims to detect a communicable area, and does not teach parameter optimization in consideration of differences in location and importance depending on location.

  Therefore, an object of the present invention is to provide a radio network control method and system, a network operation management apparatus, and a radio station that enable optimization control in consideration of the importance of the area in the cell.

A radio network control system according to the present invention is a radio network control system that controls a radio cell, and uses location information included in a measurement report from a radio terminal in the radio cell to transmit terminal-related information from the radio cell. A totaling means for counting in correspondence with a smaller predetermined area, an important area defining means for defining an area where the terminal-related information satisfies a predetermined condition as an important area, and one or a plurality of radio cells in consideration of the important area And a wireless parameter control means for controlling the wireless parameter .
A radio network control method according to the present invention is a radio network control method for controlling a radio cell, wherein the tabulating means uses the location information included in the measurement report from the radio terminal in the radio cell to obtain terminal related information. The important area defining means prescribes an area where the terminal-related information satisfies a predetermined condition as an important area, and the radio parameter control means considers the important area. And controlling radio parameters of one or a plurality of radio cells .
A network operation management apparatus according to the present invention is a network operation management apparatus that manages a plurality of radio stations, and uses location information included in a measurement report from a radio terminal in a radio cell to transmit terminal-related information to the radio Aggregating means for compiling in association with a predetermined area smaller than a cell, important area defining means for defining an area in which the terminal-related information satisfies a predetermined condition as an important area, and one or more in consideration of the important area And radio parameter control means for controlling radio parameters of the radio cell .
A radio station according to the present invention is a radio station that controls a radio cell, and uses location information included in a measurement report from a radio terminal in the radio cell, to transmit terminal-related information to a predetermined area smaller than the radio cell. Totaling means for counting in association with each other, important area defining means for defining an area where the terminal-related information satisfies a predetermined condition as an important area, and radio parameters of one or a plurality of radio cells in consideration of the important area And wireless parameter control means for controlling .

  According to the present invention, the terminal related information is aggregated in association with the predetermined area using the position information included in the measurement report from the terminal, and the area where the terminal related information satisfies the predetermined condition is defined as the important area, Optimization control considering the importance of the area in the cell becomes possible.

FIG. 1 is a schematic cell configuration diagram for explaining the difference in importance depending on location. FIG. 2 is a schematic system configuration diagram of the radio network control system according to the first embodiment of the present invention. FIG. 3 is a flowchart showing a radio network control method according to the first embodiment. FIG. 4 is a functional block configuration diagram showing an example of a radio network control system according to the first embodiment. FIG. 5 is a flowchart showing a radio network control method according to the first embodiment of the present invention. FIG. 6 is a flowchart illustrating a radio network control method according to a second embodiment of the present invention. FIG. 7 is a flowchart illustrating a radio network control method according to a third embodiment of the present invention. FIG. 8 is a flowchart illustrating a radio network control method according to a fourth embodiment of the present invention. FIG. 9 is a schematic cell configuration diagram showing an example of important area detection in the radio parameter control method. FIG. 10 is a flowchart showing a wirelessless network control method according to the second embodiment. FIG. 11 is a flowchart illustrating a radio network control method according to a fifth embodiment of the present invention.

  According to the embodiment of the present invention, using the location information included in the measurement report from the terminal, the terminal-related information is aggregated in association with an area smaller (that is, narrower) than the cell unit, and the terminal-related information is a predetermined condition. An area that satisfies the requirements is defined as an important area. Furthermore, by controlling the radio parameters of the radio station with emphasis on the important area, optimization control considering the importance of the area becomes possible. Hereinafter, embodiments and examples of the present invention will be described in detail using 3GPP LTE (Long Term Evolution) and UMTS (Universal Mobile Telecommunications System) systems as examples.

1. First Embodiment First, the configuration and operation of this embodiment will be described with reference to FIGS.

1.1) System Configuration As shown in FIG. 2, as an example, a radio communication system having a plurality of radio stations 10 and radio terminals 30 and managing a plurality of radio stations by a network operation management apparatus 20 is taken up. . The radio terminal 30 is located in one cell C10 managed by the radio station 10, measures the radio wave quality from the radio station 10, and sends a measurement report including the measured radio wave quality information and the position information at the time of the measurement. Report to the radio station 10. The position information at the time of measurement may be, for example, the position information acquired when the wireless terminal measures the radio wave quality information, or the latest position information held at the time when the wireless terminal measures the radio wave quality information. It may be the position information acquired when the radio terminal stores the radio wave quality information measured (that is, recorded in a memory or the like), or held when the radio terminal holds the radio wave quality information measured. The latest location information may be used.

  The wireless terminal 30 is a terminal in a wireless connection state (LTE RRC Connected or UMTS CELL_DCH, CELL_FACH) or an idle state (LTE RRC Idle or UMTS Idle, CELL_PCH, URA_PCH). For example, the measurement data is reported to the radio station 10 in the immediate report mode (Immediate MDT), and if the wireless connection is established by recording the measurement data in the record report mode (Logged MDT) in the idle state, the measurement data is transmitted to the radio station 10. To the station 10. However, the method of collecting the location information of the wireless terminal is not limited to MDT, and may be collected by other methods (for example, Secure User Plane Location: SUPL, Location Service: LCS). The radio station 10 is a radio base station (LTE eNode B: eNB or UMTS Node B: NB) that controls the cell C10 or a control station (UMTS Radio Network Controller: RNC) that controls the radio base station. Or Operation and Maintenance (OAM) server). The wireless terminal 30 is a mobile station or user equipment (User Equipment: UE) that can be wirelessly connected to a wireless base station, such as a mobile phone or a mobile information terminal.

1.2) Operation The radio network control function according to the present embodiment can be provided in one or both of the radio station 10 and the network operation management apparatus 20, and executes the following operation.

  In FIG. 3, first, the radio wave quality information and position information reported from the terminal 30 are collected (operation S11).

  For example, RSRP (Reference Signal Received Power), RSRQ (Reference Signal Received Quality), RSSI (Received Signal Strength Indicator), CPICH (Common Pilot Channel) RSCP (Received Signal Code Power), Ec / No (The received energy per chip divided by the power density), SI (N) R (Signal to Interference (and Noise) Ratio), etc. can be used.

  The position information of the wireless terminal 30 can be acquired as GNSS (Global Navigation Satellite System) information such as GPS (Global Positioning System). Or the position is estimated from the radio field intensity from multiple neighboring radio base stations, the position is estimated from the arrival time difference of signals from multiple radio base stations (Observed Time Difference of Arrival: OTDOA), or multiple radio base stations It is also possible to estimate the position from the arrival time difference of the signal to (Uplink Time Difference of Arrival: UTDOA). As position information, for example, latitude / longitude, or x, y coordinates in a UTM (Universal Transverse Mercator) coordinate system or a 19 coordinate system can be used, and it is preferable that z coordinates (altitude information) are included.

  Subsequently, terminal-related information is tabulated for each predefined area (hereinafter referred to as mesh) Ai (operation S12). The mesh is an area as a totaling unit and may be an area smaller than the cell C10. One mesh corresponds to one region having a geographical range based on positional information such as latitude and longitude, and at least a part or all of one or a plurality of cells can be covered by a plurality of meshes. The shape of one mesh does not need to be a rectangle as shown in FIG. 2, and the mesh size may be different within a cell or between cells.

  The terminal-related information includes, for example, communication-related information related to radio wave reception quality, communication volume (data traffic volume), service quality, etc., and count information related to the number of terminals or the number of terminal measurement reports. Aggregation is statistical processing of terminal-related information, and includes, for example, generation of CDF (Cumulative Distribution Function) of radio wave quality, total, average of communication volume, number of terminals or number of terminal measurement reports.

  Subsequently, an important area in the cell C10 is defined based on the counting result (operation S13). The important area may be defined for each mesh or in units of a plurality of meshes. If it is a binary determination as to whether or not it is an important area, a determination result of 0/1 can be added by comparing the aggregation result with one threshold value in units of a single mesh or a plurality of meshes. In addition, when setting a stage in an important area, the importance corresponding to a single mesh or multiple mesh units is compared by comparing the threshold value corresponding to each of a plurality of importance or priority (priority) with the aggregation result. Can be added. Specifically, for example, an area that satisfies the following conditions can be determined as an important area.

<Condition 1>
The number of wireless terminals staying in the area exceeds a predetermined number. The number of measurement reports from the wireless terminals staying in the area exceeds a predetermined value. The number of measurement reports regarding the area exceeds a predetermined value. The amount of communication generated in the area exceeds the predetermined amount. The data communication opportunity in the area exceeds the predetermined number. The radio quality of the area does not satisfy the predetermined radio quality requirements. The radio quality of the area is predetermined. The number of measurement reports that do not satisfy the radio quality requirements of the product exceeds the specified value. • The service quality in the area does not satisfy the specified service quality requirements.
It should be noted that the condition relating to the communication amount may be determined based on whether or not a service having a high QCI (QoS Class Identifier) value exceeds a predetermined amount. Further, these predetermined conditions may be applied only to wireless terminals belonging to a specific category, for example, VIP users (terminals) having a specific contract (corporate contract or the like).

1.3) System Configuration Example Next, a specific configuration of a system in which the above-described wireless network control function is provided in the network operation management apparatus 20 will be described with reference to FIG. As already described, the wireless network control function may be provided in the wireless station 10 other than the network operation management device 20 or other network devices.

  In FIG. 4, the radio station 10 is a radio base station or radio network control station (RNC), and includes a transmission unit 101, a reception unit 102, a measurement information storage unit 103, and a control unit 104. The transmission unit 101 and the reception unit 102 are wireless communication units for performing wireless communication with the wireless terminal 30. The measurement information storage unit 103 stores the measurement information (radio wave quality and position information) collected from the wireless terminal 30 and the measurement information acquired by the wireless station, and the control unit 104 controls the collection of measurement information, In accordance with the communication control and the instruction from the network operation management device 20, the wireless parameter control of the transmission unit 101 is executed.

  The network operation management apparatus 20 includes a database 201, a terminal related information totaling unit 202, an important area defining unit 203, and a wireless parameter control unit 204. The wireless network control function according to this embodiment includes a terminal related information totaling unit 202, an important This can be realized by the functions of the area defining unit 203 and the wireless parameter control unit 204. The database 201 stores measurement information collected from the wireless station 10. The terminal related information totaling unit 202 totalizes the collected terminal related information for each mesh as described above. Based on the result of the aggregation, the important area defining unit 203 defines an important area, and the radio parameter control unit 204 determines the radio parameter for the radio station 10 while considering the important area, thereby determining one or a plurality of radio cells. Control.

  When the radio terminal 30 reports the radio wave quality and the position information at the time of measurement to the radio station 10, it is also possible to collect the radio wave quality for each predetermined mesh and report it to a radio network (for example, a radio station). . Alternatively, instead of collecting radio wave quality and location information at the same time, for example, radio wave quality may be collected periodically, and location information may be collected periodically or whenever a terminal reports location information to a radio station. Further, for example, in addition to radio wave quality and position information, throughput can be collected periodically or at the end of communication.

1.4) Effect As described above, according to the first embodiment of the present invention, using the location information included in the measurement report from the radio terminal 30, the terminal related information is narrower than the cell unit (mesh). And an important area can be defined based on the aggregated terminal-related information. This makes it possible to control the radio parameters in consideration of the important area.

1.5) Example <First Example>
According to the first embodiment of the present invention, the important area is defined by counting the number of measurement reports from the wireless terminals. Hereinafter, the operation of the important area defining unit 203 according to the first embodiment will be described with reference to FIG.

  In FIG. 5, when the important area defining unit 203 receives the result of counting the number of measurement reports in a certain mesh from the terminal related information totaling unit 202 (operation 301), whether or not the number of measurement reports exceeds a preset threshold value. If the number of measurement reports exceeds a predetermined threshold (operation 302; YES), the geographical area of the mesh is defined as an important area (operation 303). If the number of measurement reports is equal to or less than the predetermined threshold (operation 302; NO), it is determined that the area is not an important area.

<Second embodiment>
According to the second embodiment of the present invention, the important area is defined in consideration of the number of measurement reports from specific important user terminals as well as general user terminals. Hereinafter, the operation of the important area defining unit 203 according to the second embodiment will be described with reference to FIG.

  In FIG. 6, when the important area defining unit 203 receives the result of counting the number of measurement reports in a mesh from the terminal related information counting unit 202 (operation 301), the number of measurement reports is the same as in the first embodiment described above. Is determined to exceed a preset threshold TH1 (operation 302), and if the number of measurement reports exceeds the predetermined threshold TH1 (operation 302; YES), the geographical area of the mesh is defined as an important area. (Operation 303).

  On the other hand, if the number of measurement reports is equal to or less than the predetermined threshold value TH1 (operation 302; NO), is the number of measurement reports from the user terminal (VIP terminal) of the special contract exceeding the predetermined threshold value TH2 (<TH1)? It is determined whether or not (operation 304). If the number of measurement reports from the VIP terminal exceeds the predetermined threshold TH2 (operation 304; YES), it is determined that the area is an important area (operation 303), and if the number of measurement reports from the VIP terminal is equal to or less than the predetermined threshold TH2. (Operation 304; NO), it is determined that the area is not an important area.

<Third embodiment>
According to the third embodiment of the present invention, not only the number of measurement reports from the terminals that do not satisfy the predetermined quality requirements (hereinafter referred to as unachieved measurement reports), but also from specific important user terminals. Define important areas taking into account the number of unmeasured reports. Hereinafter, the operation of the important area defining unit 203 according to the third embodiment will be described with reference to FIG.

  In FIG. 7, when the important area defining unit 203 receives the result of counting the number of unachieved measurement reports in a certain mesh from the terminal-related information totaling unit 202 (operation 310), the threshold value for which the number of unreached measurement reports is set in advance It is determined whether or not THn is exceeded (operation 311), and if the number of unachieved measurement reports exceeds a predetermined threshold THn (operation 311; YES), the geographical area of the mesh is defined as an important area (operation 312). ).

  If the number of unachieved measurement reports is less than or equal to the predetermined threshold THn (operation 311; NO), whether or not the number of unreached measurement reports from the user terminal (VIP terminal) of the special contract exceeds the predetermined threshold THvip (<THn) Is determined (operation 313). If the number of unreached measurement reports from the VIP terminal exceeds the predetermined threshold THvip (operation 313; YES), it is determined that the area is an important area (operation 312), and the number of unmeasured measurement reports from the VIP terminal is the predetermined threshold THvip. If it is below (operation 313; NO), it is determined that it is not an important area.

<Fourth embodiment>
According to the fourth embodiment of the present invention, a plurality of (N-1) thresholds TH (1),... TH (N-1) are set for the communication amount per terminal, and N levels of importance are defined. To do. Hereinafter, the operation of the important area defining unit 203 according to the fourth embodiment will be described with reference to FIG.

  In FIG. 8, when the important area defining unit 203 receives the total amount of traffic per terminal in a certain mesh from the terminal related information totaling unit 202 (operation 401), the total traffic t is preset (N -1) It is determined whether or not the (i-1) th threshold value TH (i-1) among the threshold values is exceeded (operation 402), and the total communication amount t is less than the predetermined threshold value TH (i-1). If it exceeds (operation 402; YES), the number i of the maximum threshold that the total communication amount t satisfies is determined (operation 403), and the importance corresponding to the number i is assigned to the geographical area of the mesh ( Action 404). If the total communication amount t is equal to or less than the predetermined threshold value TH (i−1) (operation 402; NO), it is determined that the area is not an important area, and importance is not assigned.

  The communication amount may be a statistics (average or the like) of the traffic amount per terminal, or may be the total traffic amount of the area for a predetermined period. It is also possible to set one threshold for the traffic and perform binary determination of whether or not the area is an important area (non-important area).

  In the fourth embodiment, a plurality of thresholds are set for the traffic, but similarly in the first and second embodiments described above, a plurality of thresholds can be set for the number of measurement reports. That is, a plurality of predetermined threshold values TH1 may be set, and importance levels (for example, 1 to n) may be assigned in correspondence with them. For example, when a plurality of threshold values TH1_1> TH1_2>... TH1_n are set and the number of measurement reports exceeds the highest threshold value TH1_1, the highest importance level 1 is set. Importance can be assigned as importance 2 and so on. Similarly, in the third embodiment, a plurality of thresholds can be set for the number of unachieved measurement reports, and a plurality of importance levels can be defined.

<Specific example>
For example, as shown in FIG. 9, it is assumed that there are a radio cell C10a managed by the radio station 10a and a radio cell C10b managed by the radio station 10b. The terminals in each cell send measurement reports in each mesh to the respective radio stations, and the terminal-related information totaling unit 202 of the network operation management apparatus 20 described above totals these measurement reports for each mesh.

  In the example shown in FIG. 9, since the number of measurement reports from the terminal exceeds the predetermined threshold TH1 in the mesh A11 of the radio cell C10a, the important area defining unit 203 sets the mesh A11 as the important area. In the mesh A12 of the wireless cell C10a, the number of measurement reports is equal to or less than the predetermined threshold value TH1, so the important area defining unit 203 does not make the mesh A12 an important area.

Further, another determination condition is illustrated for the mesh A13 of the wireless cell C10b. In other words, the number of unachieved measurement reports that do not satisfy the predetermined quality requirement is aggregated, and if it is less than or equal to the predetermined threshold THn, in principle it is not considered as an important area, If the unreached measurement report number exceeds the threshold value THvip, the mesh A13 is set as an important area.
In the above-described embodiment, the same determination threshold is set in the target cell, but a different determination threshold may be set for each predetermined range (for example, for each of a plurality of areas) even in the same cell.

2. Second Embodiment According to the second embodiment of the present invention, radio parameters of a radio station are determined based on the important area regulations obtained by the first embodiment. Hereinafter, the second embodiment of the present invention and examples thereof will be described in detail with reference to FIGS. 10 and 11.

  The radio network control function according to the present embodiment can be provided in one or both of the radio station 10 and the network operation management apparatus 20, and performs the following operations.

  In FIG. 10, first, it is assumed that an important area is defined for each mesh Ai by the operations S11 to S13 described in FIG. Subsequently, the radio parameters of the radio cell or the plurality of radio cells are determined in consideration of the important area (operation S14). For example, measurement information reported from an important area is counted with a weight more than measurement information reported from other areas, and is reflected in radio network control. In the following, a fifth example that further embodies the second embodiment will be described.

<Fifth embodiment>
In the fifth embodiment of the present invention, as an example, radio network control in which VIP user terminals are preferentially considered will be described. The same applies to the case described in the first to fourth embodiments.

  In FIG. 11, the terminal related information totaling unit 202 totalizes the quality (for example, radio wave quality, service quality, etc.) in the VIP terminal based on the measurement report from the VIP user terminal and the quality measurement in the wireless station for the VIP user terminal (operation). 501), the important area defining unit 203 determines whether or not the aggregated quality satisfies a predetermined requirement (operation 502). If the aggregated quality satisfies the predetermined requirement (operation 502; YES), the mesh is defined as an important area (operation 503). If not satisfied (operation 502; NO), the operation 503 is skipped and the mesh is skipped. Is not an important area. The above operations 501 to 503 are repeated for all the meshes in the cell, and an important area is specified (operation 504).

  When the determination for all meshes is completed (operation 504; YES), the wireless parameter control unit 204 controls the wireless parameters so as to improve the quality in the important area with priority (operation 505). For example, the radio parameter control is executed so that the quality in the important area is preferentially improved or only for the purpose of improving the quality in the important area.

  Note that a plurality of thresholds for the quality requirement in the operation 502 may be set, and the importance (for example, 1 to n) may be assigned as described above, and the radio parameter control may be performed in consideration of the weight according to the importance.

3. Important Area Definition Method As described above, the important area definition method can use the number of measurement reports, the amount of communication, and the like as an index. In addition, the following definition method can also be adopted.
-An area that satisfies a predetermined condition 2 in the VIP area defined in advance.
Here, the predetermined condition 2 is, for example, any one or combination of the above conditions 1 or an area where the number of users is large (such as when the user is concentrated in a short time or when the number of users is large throughout a long time). An area that does not satisfy the predetermined quality condition 2).
An area where there is a quality improvement request from a user or an area where such a request frequently occurs.
Here, the said quality improvement request | requirement is realizable by the input from another apparatus, for example.

Further, the following control can be performed in the radio parameter control considering the important area.
・ Change the coping policy at each time.
・ Change the criteria for important areas or important areas at different times.
-When the policy is different for each important area in the cell, priorities are further assigned between the important areas, and the problem is determined according to the priority.
When the countermeasure policy is changed at each time, for example, even when it is determined as an important area, wireless parameter control that places importance on the important area in terms of time may or may not be performed. Further, as a countermeasure by prioritizing between important areas, for example, radio parameter control is preferentially performed in an important area with a serious problem level such as when quality is very bad.

  The present invention is applicable to a system for controlling radio parameters of a radio terminal or a radio base station in a radio communication system. That is, in the first and second embodiments, mainly the LTE system has been described. However, in these embodiments, the wireless communication system other than the LTE system, for example, 3GPP UMTS, 3GPP2 CDMA2000 system (1xRTT, HRPD (High Rate Packet Data)), GSM (Global System for Mobile Communications) system, WiMAX system, etc. May be applied.

10 radio stations (radio base stations, RNC)
20 network operation management device 30 terminal 101 transmission unit 102 reception unit 103 measurement information storage unit 104 control unit 201 database 202 terminal related information totaling unit 203 important area defining unit 204 wireless parameter control unit

Claims (25)

A wireless network control system for controlling a wireless cell,
Using the location information included in the measurement report from the wireless terminal in the wireless cell, the counting means for counting the terminal related information in association with a predetermined area smaller than the wireless cell ;
An important area defining means for defining an area in which the terminal-related information satisfies a predetermined condition as an important area;
Radio parameter control means for controlling radio parameters of one or more radio cells in consideration of the important area;
A wireless network control system comprising: The radio network control system according to claim 1 , wherein the important area is defined by one or more importance levels. The radio network control system according to claim 1 or 2 , wherein the terminal-related information is information on at least one of radio wave reception quality, communication volume, service quality, number of terminals, and number of terminal measurement reports. The predetermined condition is
The number of wireless terminals staying in the area exceeds a predetermined number. The number of measurement reports from the wireless terminals staying in the area exceeds a predetermined value. The number of measurement reports regarding the area exceeds a predetermined value. The amount of communication generated in the area exceeds the predetermined amount. The data communication opportunity in the area exceeds the predetermined number. The radio quality of the area does not satisfy the predetermined radio quality requirements. The radio quality of the area is predetermined. claim 1 3 number reporting measurements of do not satisfy the signal quality requirements, characterized in that service quality in that, the area exceeding a predetermined value is one of at least one of not satisfying the predetermined quality of service requirements The wireless network control system according to any one of the above. The radio network control system according to any one of claims 1 to 4 , wherein the determination as to whether or not the predetermined condition is satisfied is performed only for the radio terminals belonging to a specific category. The said totaling means selects only the said radio | wireless terminal which belongs to a specific category among the radio terminals in the said radio | wireless cell, and performs the said total, The one of Claim 1-5 characterized by the above-mentioned. Wireless parameter control system. A wireless network control method for controlling a wireless cell, comprising:
Aggregating means, using the location information included in the measurement report from the wireless terminal in the wireless cell, the terminal related information is aggregated in association with a predetermined area smaller than the wireless cell ,
The important area defining means defines an area where the terminal-related information satisfies a predetermined condition as an important area ,
Radio parameter control means controls radio parameters of one or more radio cells in consideration of the important area ;
A wireless network control method. 8. The radio network control method according to claim 7 , wherein the important area is defined by one or a plurality of importance levels. 9. The radio network control method according to claim 7 , wherein the terminal related information is information related to at least one of radio wave reception quality, communication volume, service quality, number of terminals, number of terminal measurement reports. The predetermined condition is
The number of wireless terminals staying in the area exceeds a predetermined number. The number of measurement reports from the wireless terminals staying in the area exceeds a predetermined value. The number of measurement reports regarding the area exceeds a predetermined value. The amount of communication generated in the area exceeds the predetermined amount. The data communication opportunity in the area exceeds the predetermined number. The radio quality of the area does not satisfy the predetermined radio quality requirements. The radio quality of the area is predetermined. 7. number of reported measurement of not satisfying the radio wave quality requirements is characterized in that service quality in that, the area exceeding a predetermined value is one of at least one of not satisfying the predetermined quality of service requirements - 9 The wireless network control method according to any one of the above. The radio network control method according to any one of claims 7 to 10 , wherein the determination as to whether or not the predetermined condition is satisfied is performed only for the radio terminals belonging to a specific category. 12. The aggregation according to any one of claims 7 to 11 , wherein the aggregation unit selects only the wireless terminals belonging to a specific category from wireless terminals in the wireless cell and performs the aggregation. Wireless parameter control method. A network operation management device for managing a plurality of radio stations,
Using the location information included in the measurement report from the wireless terminal in the wireless cell, the counting means for counting the terminal related information in association with a predetermined area smaller than the wireless cell ;
An important area defining means for defining an area in which the terminal-related information satisfies a predetermined condition as an important area;
Radio parameter control means for controlling radio parameters of one or more radio cells in consideration of the important area ;
A network operation management apparatus characterized by comprising: The network operation management apparatus according to claim 13 , wherein the important area is defined by one or a plurality of importance levels. The network operation management apparatus according to claim 13 or 14 , wherein the terminal-related information is information related to at least one of radio wave reception quality, communication amount, service quality, number of terminals, and number of terminal measurement reports. The predetermined condition is
The number of wireless terminals staying in the area exceeds a predetermined number. The number of measurement reports from the wireless terminals staying in the area exceeds a predetermined value. The number of measurement reports regarding the area exceeds a predetermined value. The amount of communication generated in the area exceeds the predetermined amount. The data communication opportunity in the area exceeds the predetermined number. The radio quality of the area does not satisfy the predetermined radio quality requirements. The radio quality of the area is predetermined. claim the number reporting measurements of does not satisfy the radio wave quality requirements is characterized in that service quality in that, the area exceeding a predetermined value is one of at least one of not satisfying the predetermined quality of service requirements 13 - 15 The network operation management apparatus according to any one of the above. The network operation management apparatus according to any one of claims 13 to 16 , wherein whether or not the predetermined condition is satisfied is determined only for the wireless terminals belonging to a specific category. The aggregation unit, according to claim 13, characterized in that the aggregate by selecting only the wireless terminals belonging to a specific category of the wireless terminals within the radio cell - as described in any one of 17 Network operation management device. A radio station for controlling a radio cell,
Using the location information included in the measurement report from the wireless terminal in the wireless cell, the counting means for counting the terminal related information in association with a predetermined area smaller than the wireless cell ;
An important area defining means for defining an area in which the terminal-related information satisfies a predetermined condition as an important area;
Radio parameter control means for controlling radio parameters of one or more radio cells in consideration of the important area;
A wireless station characterized by comprising: The radio station according to claim 19 , wherein the important area is defined by one or more importance levels. The radio station according to claim 19 or 20 , wherein the terminal-related information is information on at least one of radio wave reception quality, communication volume, service quality, number of terminals, and number of terminal measurement reports. The predetermined condition is
The number of wireless terminals staying in the area exceeds a predetermined number. The number of measurement reports from the wireless terminals staying in the area exceeds a predetermined value. The number of measurement reports regarding the area exceeds a predetermined value. The amount of communication generated in the area exceeds the predetermined amount. The data communication opportunity in the area exceeds the predetermined number. The radio quality of the area does not satisfy the predetermined radio quality requirements. The radio quality of the area is predetermined. 19. the number reporting measurements of does not satisfy the radio wave quality requirements is characterized in that service quality in that, the area exceeding a predetermined value is one of at least one of not satisfying the predetermined quality of service requirements - 21 The radio station according to any one of the above. The radio station according to any one of claims 19 to 22 , wherein the determination as to whether or not the predetermined condition is satisfied is performed only for the radio terminals belonging to a specific category. The radio station according to any one of claims 19 to 23 , wherein the aggregation means performs the aggregation by selecting only the radio terminals belonging to a specific category of radio terminals in the radio cell. . A wireless network control device for controlling a wireless cell,
Using the location information included in the measurement report from the wireless terminal in the wireless cell, the counting means for counting the terminal related information in association with a predetermined area smaller than the wireless cell ;
An important area defining means for defining an area in which the terminal-related information satisfies a predetermined condition as an important area;
Radio parameter control means for controlling radio parameters of one or more radio cells in consideration of the important area;
A wireless network control device comprising:

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