WO2014132686A1

WO2014132686A1 - Base station, mobile station, wireless quality measurement result reception method, and wireless quality measurement result transmission method

Info

Publication number: WO2014132686A1
Application number: PCT/JP2014/050584
Authority: WO
Inventors: スリサックオムサブ; 健一郎青▲柳▼; ウリアンダルマワンティハプサリ
Original assignee: 株式会社Ｎｔｔドコモ
Priority date: 2013-03-01
Filing date: 2014-01-15
Publication date: 2014-09-04
Also published as: JP2014171007A

Abstract

According to one embodiment of the present invention, a base station has: a setting information generating unit that generates setting information for wireless quality measurement to be performed by means of a mobile station during carrier aggregation; a transmission unit that transmits the generated setting information to the mobile station; and a reception unit that receives results of the wireless quality measurement performed by means of the mobile station. Furthermore, according to the one embodiment of the present invention, the mobile station has: a reception unit that receives the setting information for the wireless quality measurement during the carrier aggregation; a wireless quality measuring unit, which measures the wireless qualities in accordance with the received setting information, and which generates the wireless quality measurement results; and a transmission unit that transmits the wireless quality measurement results to the base station.

Description

Base station, mobile station, radio quality measurement result receiving method, and radio quality measurement result transmitting method

The present invention relates to a base station, a mobile station, a radio quality measurement result reception method, and a radio quality measurement result transmission method.

3GPP (3rd Generation Partnership Project) defines MDT (Minimization of Drive Tests) (see 3GPP TS 37.320 V11.2.0 (2012-12)). MDT (Minimization of Drive Tests) is a technique for using a radio quality measurement result for network design by causing a mobile station to report a radio quality measurement result to a network such as a base station. MDT replaces the manual driving test that the operator has to perform on the network, and can reduce the operation cost (OPEX) and the capital investment (CAPEX).

FIG. 1 is a schematic diagram of MDT. When a mobile station (UE: User Equipment) adds location information to a radio quality measurement result and transmits it to a base station (eNB: evolved NodeB) or an OAM (Operation, Administration and Maintenance) server, the base station or OAM server It is possible to grasp the position in the cell, the radio quality and the throughput state. When the mobile station is connected to the base station (RRC_Connected state), the mobile station reports the radio quality measurement result to the base station in real time using MeasReport. Such a real-time report of the wireless quality measurement result is referred to as Immediate MDT. On the other hand, when the mobile station is in the idle state (RRC_Idle state), the mobile station stores the radio quality measurement result as a log in the mobile station, and logs at the timing when the mobile station is connected to the base station (RRC_Connected state). To the base station. Such a saved log report is referred to as Logged MDT.

Currently, in 3GPP, LTE-A (Long Term Evolution-Advanced) is being standardized as the next generation communication standard of LTE (Long Term Evolution). In the LTE-A system, carrier aggregation (CA) technology is introduced in order to achieve a throughput higher than that of the LTE system while ensuring backward compatibility with the LTE system. In carrier aggregation technology, LTE carrier (also called component carrier) with a maximum bandwidth of 20 MHz supported by LTE system is used as a basic component, and by using multiple component carriers at the same time, wider bandwidth communication is realized. (See 3GPP TS 36.331 V11.2.0 (2012-12) and 3GPP TR 36.300 V11.4.0 (2012-12)).

FIG. 2 is a schematic diagram of carrier aggregation. A mobile station that supports carrier aggregation can communicate with a base station using a plurality of component carriers simultaneously. For example, a mobile station that supports carrier aggregation in both the 800 MHz band and the 2 GHz band shown in FIG. 2 can perform communication in which the 800 MHz band and the 2 GHz band are bundled. On the other hand, a mobile station that does not support carrier aggregation can communicate with a base station using only one component carrier.

In carrier aggregation, a highly reliable primary cell (PCell: Primary Cell) that ensures connectivity with a mobile station, and a secondary cell (SCell: Secondary Cell) that is additionally set in the mobile station connected to the primary cell And are set. For example, in the specific example shown in FIG. 2, one of the two component carriers may be set as a primary cell and the other may be set as a secondary cell.

FIG. 3 is a schematic diagram of an area corresponding to carrier aggregation. A mobile station that supports carrier aggregation can communicate using a plurality of component carriers simultaneously in a carrier aggregation-compatible area in which a primary cell and a secondary cell are set. As shown in FIG. 3, when the cell 1 and the cell 2 in which the secondary cell is set exist in the primary cell, each of the cell 1 and the cell 2 is a carrier in which the primary cell and the secondary cell are set. It is an aggregation-compatible area. In FIG. 3, cell 1 and cell 2 in which a primary cell is set may exist among secondary cells. For example, the carrier aggregation corresponding areas may be discontinuously arranged as shown in FIG. 3A or may be continuously arranged as shown in FIG.

At the location (1), when the Event Ax (for example, Event A3 / A4) is satisfied, the base station determines to add a secondary cell in the RRC (Radio Resource Control) layer. In addition, moving in or out of Event Ax is defined by whether or not the radio quality of the mobile station satisfies a specific condition. For example, Event A1 is assumed to be satisfied when the radio quality of the serving cell is better than the threshold. Event A2 is assumed to be satisfied when the radio quality of the serving cell becomes worse than the threshold. Event A3 shall be satisfied when the wireless quality of the neighboring cell is better than a certain value compared to the wireless quality of the primary cell. Event A4 is assumed to be satisfied when the wireless quality of neighboring cells is better than the threshold. Event A5 is assumed to be satisfied when the radio quality of the primary cell becomes better than the first threshold and the radio quality of the secondary cell becomes worse than the second threshold. Event A6 is assumed to be satisfied when the wireless quality of the neighboring cell is better than a certain value compared to the wireless quality of the secondary cell.

After adding the secondary cell, the base station activates the secondary cell at the MAC (Medium Access Control) layer. The activation of the secondary cell may be performed when, for example, Event A1 / A2 is satisfied. Moreover, it may be performed without using the measurement result immediately after the secondary cell is added, or may be performed based on CQI (Channel Quality Indicator). At the position (2), the base station performs deactivation of the secondary cell and deletion of the secondary cell. In this case, the mobile station communicates by connecting to the primary cell.

At position (3), a new secondary cell is added and activated as in position (1), and at position (4), as in position (2), a new secondary cell is deactivated and activated. Deletion is performed. Further, when the carrier aggregation corresponding areas are continuously arranged, a new secondary cell is added at the position (2 ′). Note that the previous secondary cell may remain set or may be deleted.

In this way, a plurality of component carriers are used in carrier aggregation. For this reason, the radio quality measurement result and the throughput state between the mobile station and the base station differ depending on whether or not there is a carrier aggregation compatible area.

The current MDT presupposes an LTE carrier having a maximum bandwidth of 20 MHz supported by the LTE system, and cannot report a radio quality measurement result during carrier aggregation from a mobile station.

For this reason, the base station cannot acquire the radio quality measurement result during carrier aggregation, and can manage the radio quality measurement result by the mobile station, the throughput state with the mobile station, the carrier aggregation state of the mobile station, etc. Can not.

The present invention aims to automatically collect radio quality measurement results from mobile stations during carrier aggregation.

A base station according to an aspect of the present invention includes:
A setting information generation unit for generating setting information for radio quality measurement by a mobile station in carrier aggregation;
A transmission unit for transmitting the generated setting information to the mobile station;
A receiver for receiving a radio quality measurement result by the mobile station;
Have

A mobile station according to an aspect of the present invention is
A receiver for receiving setting information for radio quality measurement during carrier aggregation;
A radio quality measurement unit that measures radio quality according to the received setting information and generates a radio quality measurement result;
A transmitter for transmitting the radio quality measurement result to the base station;
Have

A wireless quality measurement result receiving method according to an aspect of the present invention includes:
A wireless quality measurement result receiving method in a base station,
Generating configuration information for radio quality measurement by a mobile station during carrier aggregation;
Transmitting the generated setting information to the mobile station;
Receiving a radio quality measurement result by the mobile station;
Have

A wireless quality measurement result transmission method according to an aspect of the present invention includes:
A wireless quality measurement result transmission method in a mobile station,
Receiving configuration information for radio quality measurement during carrier aggregation;
Measuring radio quality according to the received setting information and generating a radio quality measurement result;
Transmitting the radio quality measurement result to the base station;
Have

According to the present invention, it is possible to automatically collect radio quality measurement results from mobile stations that are performing carrier aggregation.

Schematic diagram of MDT Schematic diagram of carrier aggregation Schematic diagram of areas that support carrier aggregation Configuration diagram of a base station according to an embodiment of the present invention The flowchart (MDT setting and transmission) which shows the operation | movement of the base station which concerns on the Example of this invention The flowchart (MeasReport reception and throughput measurement) which shows operation | movement of the base station which concerns on the Example of this invention. Configuration diagram of a mobile station according to an embodiment of the present invention The flowchart which shows operation | movement of the mobile station based on the Example of this invention. Sequence diagram of operations of base station and mobile station according to an embodiment of the present invention

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In an embodiment of the present invention, a mobile station and a base station that communicate using carrier aggregation in a wireless communication system such as an LTE-A (Long Term Evolution Advanced) system will be described. As described above, in carrier aggregation, a base station (eNB: evolved NodeB) is added to a primary cell for ensuring connectivity with a mobile station (UE: User Equipment) and a mobile station connected to the primary cell. Secondary cells that are set automatically are used.

In order to receive the radio quality measurement result by the mobile station in the carrier aggregation compatible area where the primary cell and the secondary cell are set, the base station sets the setting information for the radio quality measurement by the mobile station during the carrier aggregation. Generate and send to mobile station. In the following description, the wireless quality measurement result is referred to as MeasReport, and the setting information for the wireless quality measurement result is referred to as MDT setting information (MDT Configuration). Then, the mobile station measures the radio quality according to the MDT setting information and transmits MeasReport to the base station, and the base station receives MeasReport. The position information of the mobile station may be given to MeasReport. The MeasReport received in this way may be used to optimize the network parameters together with the throughput measurement result in the base station, and is a management server such as a TCE (Trace Collection Entity) or OAM server that manages the MDT log. May be used by the management server to optimize network-wide parameters.

<Base station configuration>
FIG. 4 shows the configuration of the base station 10 according to the embodiment of the present invention. The base station 10 wirelessly connects to the mobile station, thereby transmitting downlink data received from the exchange station or the like to the mobile station and transmitting uplink data received from the mobile station to the exchange station or the like.

The base station 10 includes a setting information generation unit 101, a transmission unit 103, and a reception unit 105. The base station 10 may include a throughput measurement unit 107, a log storage unit 109, and a management unit 111.

The setting information generation unit 101 generates MDT setting information for wireless quality measurement by a mobile station that is performing carrier aggregation. The MDT setting information includes a report cycle and report items. The reporting period may be common to the primary cell and the secondary cell, or may be different. The MDT setting information may include a report item for causing the mobile station to report that the state of the secondary cell has changed. For example, the addition and activation of the secondary cell may be reported from the mobile station by adding a new information element (for example, CA MDTConfig IE) to the MDT setting information. In addition, an information element (for example, includeLocationInfo IE) for adding the location information of the mobile station to MeasReport may be added to the MDT setting information.

The transmission unit 103 transmits MDT setting information to the mobile station. Transmitter 103 transmits the MDT setting information to the mobile station when the mobile station changes from the idle state (RRC_Idle state) to the connected state (RRC_Connected state) or at any timing such as after handover.

The receiving unit 105 receives MeasReport from the mobile station. MeasReport includes radio quality information of the primary cell and the secondary cell. For example, MeasReport includes radio quality such as RSRP (Reference Signal Received Power) or RSRQ (Reference Signal Received Quality) of the serving cell or neighboring cells. The uplink physical channel (PUCCH (Physical Uplink Control Channel)) includes radio quality indicating CSI (Channel State Indicator) of the primary cell and the secondary cell. The CSI includes CQI (Channel Quality Indicator) and RI (Rank Indicator). This MeasReport may be given time information and location information of the mobile station.

The throughput measuring unit 107 measures the throughput of communication with the mobile station for the mobile station in the carrier aggregation. That is, when the mobile station that has transmitted the MDT setting information is communicating using a plurality of component carriers simultaneously in the carrier aggregation compatible area, the throughput measuring unit 107 measures the throughput of communication with the mobile station. Thus, even if the MDT setting information is transmitted to the mobile station, the throughput measuring unit 107 does not need to measure the throughput unless carrier aggregation is applied. The throughput may indicate an average value of the data amount at a certain time. For example, the throughput measuring unit 107 measures the uplink or downlink throughput of the mobile station, the throughput for each EPS (Evolved Packet System) bearer in the mobile station, and the throughput for each bearer QCI (QoS class identifier) in the mobile station. . Note that the measurement of the throughput may be performed according to a report cycle included in the MDT setting information, or may be performed at any other timing.

The log storage unit 109 stores throughput measurement information and measurement results included in MeasReport as a log.

The management unit 111 manages reception and log storage operations in the base station 10 for the MDT setting information generated by the setting information generation unit 101. In addition, the management unit 111 manages the addition or activation of the secondary cell for the mobile station. In particular, the management unit 111 updates the setting information (UE Context) of the mobile station according to the MDT setting information generated by the setting information generation unit 101. As a result, it is recognized that MeasReport including the measurement result of the radio quality during the carrier aggregation is received from the mobile station. The management unit 111 may store the throughput measurement information measured by the throughput measurement unit 107 and the measurement result included in the MeasReport in the log storage unit 109 in association with each other by time information.

Note that a management server communication unit for communicating the stored log to a management server such as a TCE or OAM server may exist in the base station 10. A management server communication unit (not shown) transmits the measurement result included in MeasReport and the measurement result of the throughput of communication with the mobile station to the management server. Further, when the location information of the mobile station is given to MeasReport, the management server communication unit may also transmit the location information of the mobile station to the management server. Note that the throughput measurement information stored in the log storage unit 109 and the measurement result included in the MeasReport may be transmitted to the management server and associated with each other in the management server.

<Operation of base station>
FIG. 5 shows the operation (MDT setting and transmission) of the base station according to the embodiment of the present invention.

In step S101, the setting information generating unit 101 generates MDT setting information, and the transmitting unit 103 is configured such that the mobile station changes from the idle state (RRC_Idle state) to the connected state (RRC_Connected state) or after the handover. The MDT setting information is transmitted to the mobile station at an arbitrary timing.

In step S103, the management unit 111 updates the setting information (UE Context) of the mobile station, thereby recognizing that a MeasReport including the measurement result of the radio quality during the carrier aggregation is received from the mobile station.

FIG. 6 shows the operation (MeasReport reception and throughput measurement) of the base station according to the embodiment of the present invention.

In step S151, the management unit 111 determines whether the MDT setting information is valid in the mobile station setting information (UE Context). That is, the management unit 111 determines whether or not to receive MeasReport including the measurement result of the radio quality during carrier aggregation from the mobile station.

When the MDT setting information is valid, in step S153, the throughput measurement unit 107 measures the throughput of communication with the mobile station that is performing carrier aggregation, and holds the measurement result of the throughput in the log storage unit 109. .

In step S155, the receiving unit 105 receives MeasReport from the mobile station and holds it in the log storage unit 109.

In step S157, the management unit 111 may associate the throughput measurement result and the MeasReport in the log storage unit 109.

In step S159, the management server communication unit may communicate the log information stored in the log storage unit 109 to a management server such as a TCE or OAM server.

<Configuration of mobile station>
FIG. 7 shows the configuration of the mobile station 20 according to the embodiment of the present invention. The mobile station 20 may be any suitable device having a wireless communication function such as a mobile phone or a smartphone.

The mobile station 20 includes a reception unit 201, a radio quality measurement unit 203, and a transmission unit 205. The mobile station 20 may further include a secondary cell state determination unit 207 and a management unit 209.

The receiving unit 201 receives MDT setting information set by the base station.

The radio quality measurement unit 203 measures the radio quality according to the received MDT setting information, and generates a MeasReport including the measurement result of the radio quality. Specifically, the radio quality measurement unit 203 performs RSRP (Reference Signal Received Power) or RSRQ (Reference) of a serving cell or a neighboring cell regardless of whether or not data is actually transmitted and received on the user plane (U-Plane). Measure radio quality such as Signal Received Quality. In particular, the radio quality measurement unit 203 generates a report item included in the MDT configuration information in accordance with a report cycle included in the MDT configuration information in a state where the secondary cell is added and activated in the carrier aggregation compatible area, Generate MeasReport. MeasReport includes radio quality information of the primary cell and the secondary cell. When a reporting period common to the primary cell and the secondary cell is used, the radio quality measurement unit 203 may set the measurement results of both cells to MeasReport. Also, when separate reporting periods are used for the primary cell and the secondary cell, the radio quality measurement unit 203 may set the measurement result of the corresponding cell in each period in MeasReport.

The transmission unit 205 transmits the generated MeasReport to the base station. The transmission unit 205 transmits MeasReport to the base station according to the report period included in the MDT setting information. The transmission unit 205 may transmit MeasReport including the latest wireless quality measured by the wireless quality measurement unit 203.

The secondary cell state determination unit 207 determines a change in the state of the secondary cell such as addition and activation of the secondary cell. The addition and activation of the secondary cell is performed when a specific condition of Event Ax is satisfied. For example, Event A1 is assumed to be satisfied when the radio quality of the serving cell is better than the threshold. Event A2 is assumed to be satisfied when the radio quality of the serving cell becomes worse than the threshold. Event A3 shall be satisfied when the wireless quality of the neighboring cell is better than a certain value compared to the wireless quality of the primary cell. Event A4 is assumed to be satisfied when the wireless quality of neighboring cells is better than the threshold. Event A5 is satisfied when the radio quality of the primary cell is better than the first threshold and the radio quality of the secondary cell is worse than the second threshold. Event A6 is assumed to be satisfied when the wireless quality of the neighboring cell is better than a certain value compared to the wireless quality of the secondary cell. For Inter-RAT handover, Event B1 / B2 is also defined, and Event B1 is satisfied when the radio quality of neighboring cells in a different system is better than the threshold, and Event B2 is the primary cell This threshold value is satisfied when the threshold value becomes worse compared to the first threshold value, and the radio quality of neighboring cells of the different system becomes worse compared to the second threshold value. For example, when the secondary cell is added by the RRC measurement configuration of the RRC layer from the base station, the secondary cell state determination unit 207 may set the information that the secondary cell is added to the MeasReport. At this time, time information and position information may be given to MeasReport. As a more specific example, when Event A3 is satisfied and CA MDTConfigIE and includeLocationInfo IE are set in the MDT setting information, the secondary cell state determination unit 207 sets Addition to SCellAddMod IE in MeasReport. In addition, it may be reported to the base station together with the position information and the radio quality measurement result. Moreover, when the activation of the secondary cell is performed in the MAC layer from the base station, the secondary cell state determination unit 207 may set the information that the activation of the secondary cell is performed in MeasReport. At this time, time information and position information may be given to MeasReport.

The location information may be acquired by GPS (Global Positioning System) or may be acquired by a location determination method that can be used between the network and the mobile station. For example, position determination using Assisted-GPS, E-CID (Enhanced Cell ID), OTDOA (Observed Time Difference Of Arrival), SUPL (Secure User Plane), or the like may be used.

The management unit 209 manages the radio quality measurement and transmission operation in the mobile station 20 based on the MDT setting information received by the reception unit 201. In particular, when the receiving unit 201 receives the MDT setting information set by the base station, the management unit 209 recognizes that it is necessary to measure MeasReport including the measurement result of the radio quality during carrier aggregation. Then, when the secondary cell state determination unit 207 adds or activates the secondary cell, the management unit 209 instructs the radio quality measurement unit 203 to measure the radio quality during carrier aggregation.

<Mobile station operation>
FIG. 8 shows the operation of the mobile station according to the embodiment of the present invention.

In step S201, the management unit 209 determines whether the receiving unit 201 has received the MDT setting information set by the base station.

When the MDT setting information is received, in step S203, the secondary cell state determination unit 207 determines whether or not a secondary cell has been added. When the secondary cell is added, in step S205, the secondary cell state determination unit 207 sets information that the secondary cell has been added to MeasReport.

Furthermore, in step S207, the secondary cell state determination unit 207 determines whether or not the secondary cell has been activated. When the secondary cell is activated, in step S209, the secondary cell state determination unit 207 sets information that the secondary cell is added to MeasReport.

In step S211, the wireless quality measuring unit 203 measures the wireless quality according to the received MDT setting information, and generates a MeasReport including the wireless quality measurement result. Then, the transmission unit 203 transmits MeasReport to the base station.

<Operation sequence of base station and mobile station>
FIG. 9 shows operations of the base station and the mobile station according to the embodiment of the present invention. In FIG. 9, the process in the mobile station is described separately for the MDT function and the RRC / MAC layer, and the process in the base station is divided into the MDT function, the PDCP (Packet Data Convergence Protocol) layer, and the RRC / MAC layer. It is described.

In step S301, the MDT setting information generated by the setting information transmitting unit 101 of the base station is transmitted by the transmitting unit 103 to the mobile station at the RRC layer.

In step S303, the radio quality measurement unit 203 of the mobile station measures radio quality related to a specific cell. When the radio quality is improved for a specific cell, the mobile station determines that Event A3 / A4 is satisfied, and in step S305, sends a MeasReport including the measurement result of the radio quality in the RRC layer from the transmission unit 205 to the base station. Send.

In step S307, the management unit 111 of the base station determines whether or not a specific cell can be added as a secondary cell in the RRC layer. If it can be added as a secondary cell, in step S309, the management unit 111 of the base station instructs the mobile station to add a secondary cell in the RRC layer. In step S311, the secondary cell state determination unit 207 of the mobile station recognizes that the state of the secondary cell has changed, and stores information indicating addition of the secondary cell.

In step S313, the radio quality measurement unit 203 of the mobile station measures the radio quality of the added secondary cell, and transmits a measurement result such as CQI in the RRC layer from the transmission unit 205 to the base station. Step S313 may be performed a plurality of times according to a predetermined cycle.

In step S315, when the CQI of the secondary cell exceeds the threshold value, in step S317, the base station management unit 111 instructs the mobile station to activate the secondary cell in the MAC layer. In step S319, the throughput measuring unit 107 of the base station measures the throughput of communication with the mobile station at the PDCP layer. In step S321, the secondary cell state determination unit 207 of the mobile station recognizes that the state of the secondary cell has changed, and stores information on activation of the secondary cell.

In step S323, the secondary cell state determination unit 207 of the mobile station sets the carrier aggregation state such as addition and activation of the secondary cell to MeasReport, and transmits MeasReport from the transmission unit 205 to the base station using the RRC layer. The MeasReport may include measurement results of addition and activation of secondary cells, location information, and radio quality. In step S325, the base station management unit 111 correlates the carrier aggregation state such as the addition and activation of the secondary cell, the throughput measured by the throughput measurement unit 107, the radio quality and location information set in MeasReport, and the like. And stored in the log storage unit 109.

In step S327, the radio quality measurement unit 203 of the mobile station starts measuring the radio quality of the primary cell and the secondary cell according to the received MDT setting information. In step S329, the radio quality measurement unit 203 of the mobile station stores the radio quality measurement result. In step S331, the MeasReport including the measurement result of the radio quality is transmitted from the transmission unit 205 to the base station in the RRC layer according to the report period set in the MDT setting information. In step S333, the management unit 111 of the base station stores the throughput measured by the throughput measurement unit 107, the radio quality set in MeasReport, the location information, and the like in the log storage unit 109 in association with each other.

<Effect of Example>
According to the embodiment of the present invention, it is possible to automatically collect the radio quality measurement results from the mobile station during the carrier aggregation. For example, it is possible to collect information such as the throughput state during the carrier aggregation, the state of the secondary cell, and the radio quality. As a result, it is possible to monitor whether the network function is operating normally.

Also, by using the collected wireless quality measurement results, network design such as network parameter optimization can be realized. For example, at a certain position, the status of throughput is compared among mobile stations that are performing carrier aggregation, and it is determined whether the throughput corresponds to expected radio quality (RSRP or RSRQ) or channel quality information (CQI). be able to. If the throughput is not good despite RSRP or RSRQ or CQI being good, there are causes such as no effect of carrier aggregation setting, secondary cell placement is not optimal, setting parameter is not optimal, etc. it is conceivable that.

Conventionally, an operator needs to perform a running test of the effect of carrier aggregation using his / her own measurer, special terminal, and pseudo traffic, but according to the embodiment of the present invention, from the mobile station in the carrier aggregation, Wireless quality measurement results can be collected automatically, and operational costs and capital investment can be reduced.

For convenience of explanation, the mobile station and the base station according to the embodiment of the present invention have been described using functional block diagrams. A combination thereof may be realized. In addition, the functional units may be used in combination as necessary. Further, although the method according to the embodiment of the present invention has been described using the flowchart showing the flow of processing, the method according to the embodiment of the present invention may be performed in an order different from the order shown in the embodiment. .

As described above, the technique for automatically collecting the radio quality measurement results from the mobile stations during the carrier aggregation has been described. However, the present invention is not limited to the above-described embodiments, Can be changed and applied.

This international application claims priority based on Japanese Patent Application No. 2013-040626 filed on Mar. 1, 2013, and the entire contents of No. 2013-040626 are incorporated herein by reference.

DESCRIPTION OF SYMBOLS 10 Base station 101 Setting information generation part 103 Transmission part 105 Reception part 107 Throughput measurement part 109 Log storage part 111 Management part 20 Mobile station 201 Reception part 203 Radio quality measurement part 205 Transmission part 207 Secondary cell state determination part 209 Management part

Claims

A setting information generation unit for generating setting information for radio quality measurement by a mobile station in carrier aggregation;
A transmission unit for transmitting the generated setting information to the mobile station;
A receiver for receiving a radio quality measurement result by the mobile station;
Base station with
A throughput measuring unit for measuring the throughput of communication with the mobile station;
A log storage unit for storing a wireless quality measurement result by the mobile station and a measurement result of a throughput of communication with the mobile station as a log;
The base station according to claim 1, further comprising:
The base station according to claim 1, wherein the receiving unit receives a radio quality measurement result together with position information of the mobile station.
A receiver for receiving setting information for radio quality measurement during carrier aggregation;
A radio quality measurement unit that measures radio quality according to the received setting information and generates a radio quality measurement result;
A transmitter for transmitting the radio quality measurement result to the base station;
A mobile station.
A secondary cell state determination unit that determines a change in the state of the secondary cell;
The mobile station according to claim 4, wherein when the state of the secondary cell changes, the transmission unit transmits a radio quality measurement result including a change in the state of the secondary cell to the base station.
The mobile station according to claim 4, wherein the transmission unit transmits a wireless quality measurement result to the base station together with position information of the mobile station.
A wireless quality measurement result receiving method in a base station,
Generating configuration information for radio quality measurement by a mobile station during carrier aggregation;
Transmitting the generated setting information to the mobile station;
Receiving a radio quality measurement result by the mobile station;
A wireless quality measurement result receiving method.
A wireless quality measurement result transmission method in a mobile station,
Receiving configuration information for radio quality measurement during carrier aggregation;
Measuring radio quality according to the received setting information and generating a radio quality measurement result;
Transmitting the radio quality measurement result to the base station;
A wireless quality measurement result transmission method comprising: