KR100875830B1 - Method and system for measuring wireless quality of asynchronous BCDMA wireless network - Google Patents

Abstract

The present invention relates to a method for measuring the quality of an asynchronous WCDMA wireless network and a system therefor, using a location service in an asynchronous WCDMA system including a wireless quality analysis server, a switch, and a base station controller. The method of the present invention for measuring the radio quality of a wireless network, the radio quality analysis server requesting a location service for a particular subscriber station to the switch; Requesting, by the exchange, a location report for the subscriber station to the base station controller; Sending, by the base station controller, a radio quality measurement request to the subscriber station; The base station controller receiving a radio quality measurement report from the subscriber station; And extracting, by the base station controller, data for wireless quality measurement from the wireless quality measurement report and transmitting the data to the wireless quality analysis server. While significantly reducing the cost and manpower required to measure the wireless network quality, it is possible to measure and analyze the wireless quality of the entire mobile communication network.

WCDMA, Wireless Network, Quality, Measurement, Idle, Traffic, Location Services

Description

METHOD AND SYSTEM FOR MEASURING QOS IN ASYNCHRONOUS WCDMA NETWORK}

1 is a diagram showing the network configuration of an asynchronous WCDMA wireless network quality measurement system according to an embodiment of the present invention.

2 is a flowchart illustrating a method for measuring asynchronous WCDMA radio network quality according to an embodiment of the present invention.

3 is a diagram illustrating a detailed procedure of a measurement control and reporting process of FIG. 2 according to an embodiment of the present invention.

4 is a flowchart illustrating a method for measuring asynchronous WCDMA radio network quality according to another embodiment of the present invention.

5 is a flowchart illustrating a method for measuring asynchronous WCDMA radio network quality according to another embodiment of the present invention.

6 is a flowchart illustrating a method for measuring asynchronous WCMDA radio network quality according to another embodiment of the present invention.

7 is a flowchart illustrating a method for measuring asynchronous WCMDA wireless network quality according to another embodiment of the present invention.

8A is a diagram illustrating an embodiment of a handover state of a mobile communication terminal.

8B is a diagram illustrating an embodiment of a pilot signal strength (Ec / Io) change of a mobile communication terminal in a handover state.

8C is a diagram illustrating a handover control process by an event measurement report message in an asynchronous WCDMA network according to an embodiment of the present invention.

8D is a diagram illustrating a call processing procedure by a periodic measurement report message (PMR) in an asynchronous WCDMA network.

9 shows an example of a measurement control (MC) message used in the present invention.

10 is a diagram showing an example of a measurement report (MR) message used in the present invention.

11 illustrates a wireless quality measurement result message according to an embodiment of the present invention.

12 is a block diagram of an apparatus for analyzing radio quality of an asynchronous WCDMA wireless network according to an embodiment of the present invention.

FIG. 13 is a diagram illustrating a result of analyzing a reception sensitivity (CPICH RSCP) of a mobile communication terminal using a wireless quality measurement result message according to an embodiment of the present invention.

14 is a diagram illustrating a result of analyzing a pilot signal strength (CPICH Ec / Io) using a radio quality measurement result message according to an embodiment of the present invention.

FIG. 15 is a diagram illustrating a result of analyzing a UE transmitted power using a radio quality measurement result message according to an embodiment of the present invention.

FIG. 16 is a diagram illustrating a result of analyzing a UE transmit / receive time difference (UE Rx-Tx Time Difference) using a radio quality measurement result message according to an embodiment of the present invention.

FIG. 17 is a diagram illustrating a result of analyzing a reception sensitivity (CPICH RSCP) of a mobile communication terminal according to a round trip delay (RTT) using a radio quality measurement result message according to an embodiment of the present invention.

18 is a diagram illustrating a result of analyzing a radio quality of a handover overlap region by using a radio quality measurement result message according to an embodiment of the present invention.

<Explanation of symbols for main parts of the drawings>

10: base station 11: base station controller

12: exchange 13: operation server

200: wireless quality analysis device

The present invention relates to an asynchronous wideband code division multiple access (WCDMA) system, and more particularly, to a method and system for measuring the quality of an asynchronous WCDMA wireless network.

An asynchronous wideband code division multiple access (WCDMA) system is a system for providing a mobile communication service, and provides a next-generation mobile communication service capable of video call and high-speed data transmission. This asynchronous WCDMA system comprises an exchange, a base station controller and a base station.

In an asynchronous WCDMA system, an end system that performs a mobile communication service is a base station. The base station can maintain the call through the endless signaling with the terminal. For high quality of mobile communication service, many base stations should be designed organically and secure optimal wireless network quality. Each service operator has invested a lot to secure an optimal network, and it is necessary to continue to invest in the future.

In particular, in the early days of the communication service, a lot of investment was required to increase the capacity of the wireless network due to the continuous increase in subscribers, but as the number of subscribers is gradually saturated, the aspect of the quality of the mobile communication service is emphasized more. To this end, service operators are putting a lot of effort into collaborative optimization, such as relocating base stations and opening repeaters in shadowed areas.

Conventionally, in order to measure the quality of a wireless network, a vehicle routing measurement is performed mainly on a road, or an in-building meter has been developed to measure a building. However, these conventional wireless network quality measurement methods are required by the manpower because most of them are performed by manpower. In addition, since the conventional wireless network quality measurement methods are made through sampling, there is a limit that the measurement of the entire service area is impossible even if a lot of manpower and materials are mobilized.

Meanwhile, in the wireless network, control signals are continuously transmitted and received between the subscriber station and the wireless network for continuity of mobile services. In particular, the subscriber station can receive its own quality of reception (CPICH RSCP, CPICH Ec / Io, BLER, UE Tx Power, Rx-Tx Time) for handover between base stations and intersector sectors or to report its quality of service status. Difference, etc.) to the wireless network. The wireless network performs handover or power control using the message received from the subscriber station.

Currently, such a message is used only as information for maintaining service continuity between the wireless network and the subscriber station. If these messages are used to measure the overall radio quality of the wireless network, it will be possible to measure the quality of the entire service area while greatly reducing human and material resources.

The present invention has been proposed to solve the above problems. In the asynchronous broadband code division multiple access system, wireless quality of a wireless network is measured and analyzed by using a message transmitted and received to maintain handover or service quality between the wireless network and a subscriber station. An object of the present invention is to provide a method and a system for measuring the radio quality of an asynchronous broadband code division multiple access wireless network.

Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. Also, it will be readily appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

According to a first aspect of the present invention for achieving the above object, the wireless network of the wireless network using the location service (Location Service) in an asynchronous WCDMA system including a wireless quality analysis server for performing wireless quality analysis, switch and base station controller The method for measuring quality includes the steps of: requesting, by the wireless quality analysis server, a location service for a specific subscriber station to the exchange; Requesting, by the exchange, a location report for the subscriber station to the base station controller; Sending, by the base station controller, a radio quality measurement request to the subscriber station; The base station controller receiving a radio quality measurement report from the subscriber station; And extracting, by the base station controller, data for wireless quality measurement from the wireless quality measurement report and transmitting the data to the wireless quality analysis server.

In addition, according to a second aspect of the present invention for achieving the above object, a method for measuring the radio quality of a wireless network in an asynchronous WCDMA system comprising a radio quality analysis server, a switch and a base station controller for performing radio quality analysis, Setting, by the wireless quality analysis server, a wireless quality measurement data collection range and transmitting related information to the base station controller; Sending, by the base station controller, a radio quality measurement request to a subscriber station that has set up a call in the collection range; Receiving, by the base station controller, a radio quality measurement report from the subscriber station; And extracting, by the base station controller, data for wireless quality measurement from the wireless quality measurement report and transmitting the extracted data to the wireless quality analysis server.

On the other hand, according to a third aspect of the present invention for achieving the above object, a wireless quality analysis server for performing a wireless quality analysis, a wireless network using a subscriber station performing a handover in an asynchronous WCDMA system comprising a base station system The method for measuring quality may include receiving, by the base station system, a handover request message from a subscriber station entering a handover area; Transmitting, by the base station system, a handover indication message to the subscriber station; And extracting, by the base station system, data for radio quality measurement from the handover request message to the radio quality analysis server.

In addition, the system for measuring the radio quality of the wireless network in the asynchronous WCDMA system according to the fourth aspect of the present invention for achieving the above object, based on the location service (Location Service) to control the location reporting to the subscriber station An exchanger to perform; A base station controller which, upon receiving a location report command for a specific subscriber station from the exchange, transmits a radio quality measurement request to the specific subscriber station and receives a response accordingly; And a radio quality analysis server configured to receive data for radio quality measurement extracted from the response from the base station controller and analyze the radio quality of the radio network based thereon.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the specification and claims should not be construed as having a conventional or dictionary meaning, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention. Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

1 is a diagram showing the network configuration of an asynchronous WCDMA wireless network quality measurement system according to an embodiment of the present invention.

As shown in FIG. 1, the asynchronous WCDMA radio network quality measurement system includes: a base station (NodeB) 10, a base station controller (RNC) 11, an exchange (MSC) 12, an operation server (O & M server). Management (13), gateway mobile location center (GMLC) 14, home location register 15, and wireless quality analysis device 200.

The base station 10 performs radio signal transmission and reception, radio channel encoding and decoding, baseband signal processing, diversity (space), radio resource management, and self maintenance. The base station controller 11 performs functions such as matching with the base station 10, inter-cell handover processing, call control, and the like, and one base station controller 11 controls several base stations 10.

In particular, the base station controller 11 receives a location report control message of the mobile communication terminal from the switch 12 or when a mobile communication terminal located in a subcell set by the wireless quality analysis apparatus 200 sets up a call. The wireless quality measurement control message is transmitted to the mobile communication terminal to receive the wireless quality measurement report message. The base station controller 11 extracts data for wireless quality measurement from the received wireless quality measurement report message and transmits the data to the operation server 13.

Preferably, the base station controller 11 receives the subcell information (MSC range, RNC range, NodeB range, FA range, etc.) to perform radio quality measurement from the operation server 13, when the call is set up in the corresponding subcell The call may transmit a radio quality measurement control message to a mobile communication terminal set up and receive a response thereto.

The exchange 12 provides an interface function with the base station controller 11, and provides an exchange function (interworking function) between mobile communication subscribers and a fixed network subscriber such as PSTN and ISDN. In particular, when the switch 12 receives a location service request for a specific mobile communication terminal from the radio quality analysis apparatus 200, the switch 12 transmits a location report control message for radio quality measurement to the base station controller 11. That is, by using a location service (LCS) as a wireless quality measurement method, when the base station controller 11 receives a location report control message for wireless quality measurement from the switch 12, the wireless network quality in addition to the general location data The data for measurement is collected separately and transmitted to the operation server 13.

The operation server (O & M server) 13 manages the base station 10 and the base station controller 11 and collects wireless quality measurement data generated in the wireless network at the request of the wireless quality analysis apparatus 200. Preferably, the radio quality measurement data is collected from the base station controller 11. In addition, the operation server 13 receives subcell (MSC, RNC, NodeB, sector, FA, etc.) information to perform radio quality measurement from the radio quality analysis apparatus 200, and transmits the corresponding subcell information to the base station controller 11 To send). The base station controller 11 transmits a radio quality measurement control message to a corresponding mobile communication terminal and receives a radio quality measurement report message when a mobile communication terminal belonging to a subcell sets up a call. The base station controller 11 extracts data for wireless quality measurement from the received wireless quality measurement report message and transmits it to the operation server 13. Collecting all the measurement data generated in the wireless network in the operation server 13 may cause an overload of the wireless network and the operation server (13). Therefore, to solve this problem, it is necessary to select a range in which radio quality data can be collected. However, it should be clear that this is not necessarily the case.

The gateway mobile location center 14 performs functions such as requesting, collecting, storing, and forwarding a location in association with a switch 12, an SGSN, and the like in connection with the location-based service.

The home location register 15 registers and deletes location information of the mobile communication terminal. In addition, the home location register 15 stores profile information of the mobile communication terminal. Profile information includes the identification number of the mobile communication terminal, subscription additional service information.

The apparatus 200 for analyzing wireless quality collects wireless quality measurement data using a location service (LCS). In this case, the base station controller 11 collects and transmits radio quality measurement data to the operation server 13 in cooperation with the gateway mobile location center 14 and the exchange 12. In addition, a plurality of operation servers 13 request collection of radio quality measurement data. The collected data is received from the operation server 13 to analyze the quality of the entire wireless network. And, the analysis result is output through the GUI (Graphic User Interface).

The wireless quality analysis apparatus 200 may be implemented in the form included in the operation server 13 according to the embodiment, or may be implemented as an independent device as shown in the embodiment shown in FIG. In the following claims, the wireless quality analysis server should be understood to include the wireless quality analysis device 200 and operation server 13 of FIG. Preferably, the wireless quality analysis device 200 is implemented independently of the operation server 13, and the wireless quality analysis device 200 periodically requests and collects the wireless quality data stored in all the operation servers 13. Analyze and display with GUI.

Hereinafter, a method of measuring wireless network quality in an asynchronous WCDMA wireless network quality measuring system according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a flowchart illustrating a method for measuring asynchronous WCDMA wireless network quality according to an embodiment of the present invention. The wireless network quality is activated by activating a mobile communication terminal in an idle state based on a location service (LCS). It shows how to measure.

As shown in FIG. 2, the apparatus 200 for analyzing quality of radio waves first requests location information of the mobile communication terminal to the exchange 12 in order to measure the quality of the wireless network using a specific mobile communication terminal (see FIG. 2). S201). In this case, the location information request transmitted to the exchange 12 includes identification information (eg, Client type = PLMN Operator) indicating that the location information request is for wireless quality measurement. The wireless quality analysis apparatus 200 may use a gateway mobile location center (GMLC) 14 to request location information from the exchange 12. When the wireless quality analysis apparatus 200 transmits a location measurement request for a specific mobile communication terminal to the gateway mobile location center (GMLC) 14, the gateway mobile location center 14 sends the mobile location to the home location register 15. Query the location of and receive the location information of the exchange 12 accordingly. The gateway mobile location center (GMLC) 14 then requests the switch 12 for location information of the mobile communication terminal.

In this way, the exchange 12 receiving the location information request for the specific mobile communication terminal sets up a call with the mobile communication terminal via the base station controller RNC and the base station NodeB (S203). Then, the switch 12 transmits a location service notification (LCS Location Notification Invoke) message to the call setup mobile communication terminal and receives a response (LCS Location Notification Return Result) accordingly (S205).

As described above, after the mobile communication terminal transitions from an idle state to an active state, the switch 12 transmits a location reporting control message to the base station controller 11 (S207). In this case, the location report control message includes identification information (eg, Client type = PLMN Operator) indicating that the location report control message is for measuring radio quality.

The base station controller 11 receiving the location report control message transmits a measurement control (MC) message for wireless quality measurement to the mobile communication terminal (S209), and accordingly a measurement report (MR) message. Receive from the mobile communication terminal (S211). The measurement report (MR) message received from the mobile communication terminal includes CPICH RSCP, CPICH Ec / Io, BLER, terminal transmission power, terminal transmission / reception time difference, and the like. The base station controller 11 receiving the measurement report (MR) message transmits a measurement control (MC) message for releasing the measurement command to the mobile communication terminal (S213). Here, the measurement control (MC) message is a message defined in asynchronous WCDMA Radio Resource Control (RCC) (3GPP TS 25.331) and includes a field as shown in FIG. 9. In addition, the measurement report (MR) message includes a field as shown in FIG. 10.

Meanwhile, the base station controller 11 may acquire the longitude / latitude information of the mobile communication terminal by performing a call processing procedure according to the RRC protocol with the mobile communication terminal for basic location service call processing other than radio quality measurement (S215). In addition, the base station controller 11 performs a call processing procedure based on the NBAP protocol with the base station 10 to obtain a round trip time (RTT) of active sets (S217).

As such, the base station controller 11 generates a radio quality measurement result message and transmits the generated radio quality measurement result message to the operation server 13 by using the data collected for radio quality measurement and the information obtained in the basic location service call processing process (S219). . The operation server 13 transmits the radio quality measurement result message received from the base station controller 11 to the radio quality analysis apparatus 200 in real time (S221). The apparatus 200 for analyzing wireless quality analyzes the wireless quality of the region where the specific mobile communication terminal is located based on the wireless quality measurement result message received from the operation server 13. An example of the wireless quality measurement result message will be described later with reference to FIG. 11.

On the other hand, the base station controller 11 estimates the position of the mobile communication terminal based on the cell ID, RTT, or latitude / longitude information acquired in the above steps S215 and S217, separately from the radio quality measurement, and exchanges the result accordingly. It transmits to (S223). The exchange 12 transmits the position information of the mobile communication terminal transmitted from the base station controller 11 to the radio quality analysis apparatus 200 (S225).

3 is a diagram illustrating a detailed procedure of the measurement control and reporting process (S209, S211) of Figure 2 according to an embodiment of the present invention.

As shown in FIG. 3, the base station controller 11 classifies a measurement control (MC) message for each type of radio quality measurement data and transmits the message to the mobile communication terminal. That is, a first measurement control (MC) message for collecting RSCP and Ec / Io is transmitted (S209-1), and a transmission power (Tx-Power) and a transmission / reception time difference (Tx-Rx Time Difference) of the mobile communication terminal. The second measurement control (MC) message for collecting the data is transmitted (S209-2), and the third measurement control (MC) message for collecting the BLER is transmitted (S209-3). Here, the measurement control (MC) message is a message defined in asynchronous WCDMA Radio Resource Control (RCC) (3GPP TS 25.331) and includes a field as shown in FIG. 9.

At this time, the base station controller 11 adds a measurement report (MR) no report to the first and second measurement control (MC) messages. Accordingly, the mobile communication terminal does not separately transmit a measurement report (MR) message according to the first and second measurement control (MC) messages, and transmits a measurement report (MR) message according to the third measurement control (MC) message. Information according to the 1, 2 measurement control (MC) message is added together (S211). As a result, the radio resource occupancy can be reduced, and the load on the mobile communication terminal and the base station controller 11 can be reduced. Of course, according to the embodiment, the measurement report (MR) message may be transmitted whenever the first and second measurement control (MC) messages are received. On the other hand, the measurement report (MR) message includes a field as shown in FIG.

4 is a flowchart illustrating a method for measuring asynchronous WCDMA wireless network quality according to another embodiment of the present invention. The wireless network quality is determined using a mobile communication terminal in a traffic state based on a location service (LCS). It shows how to measure. Herein, the step having the same reference numeral as that of FIG. 2 is a process of performing the same operation, and a detailed description thereof will be omitted and only the differences will be described.

In FIG. 2, the method includes activating an idle mobile communication terminal (S203). In FIG. 4, the switch 12, the base station controller 11, the base station 10, and the mobile communication terminal are in a connected state (CELL-DCH). It is unnecessary to maintain the process of activating the mobile communication terminal as shown in FIG.

As shown in FIG. 4, when the switch 12 receives a location information request for a specific mobile communication terminal in a traffic state, the switch 12 immediately transmits an LCS Location Notification Invoke message to the corresponding mobile communication terminal. A response (LCS Location Notification Return Result) is received (S205). Then, the call processing procedure shown in FIG. 2 is performed. As described with reference to FIG. 3, the measurement control and reporting process S209 and S211 of FIG. 4 may classify a measurement control (MC) message for each type of wireless quality measurement data and transmit the same to a mobile communication terminal.

5 is a flowchart illustrating a method for measuring asynchronous WCDMA radio network quality according to another embodiment of the present invention.

As shown in FIG. 5, first, the wireless quality analysis apparatus 200 sets a range (cell) for collecting data through the operation server 13 (S501 and S503). That is, the apparatus 200 for analyzing wireless quality controls activation of subcells MSC, RNC, NodeB, SEC, and FA to collect wireless quality measurement data through the operation server 13.

When a mobile communication terminal sets up a call in the set range as described above, the base station controller 11 managing the mobile communication terminal transmits a measurement control message MC to the mobile communication terminal via the base station 10. (S505-S509).

The mobile communication terminal receiving the measurement control (MC) message transmits a measurement report message (MR) to the base station 10 in response to the measurement control message (MC) (S511), which is transmitted to the base station controller 11. (S513). When the base station controller 11 receives the measurement report message MR, the base station controller 11 transmits a dedicated measurement initialization request message (DMIR) to the base station where the mobile communication terminal is performing service (S515). ) Transmits the RTT to the base station controller 11 through a dedicated measurement report (DMR) (S517).

Subsequently, the base station controller 11 generates a radio quality measurement result message by combining the measurement report message MR and the dedicated measurement report message DMR received from the base station 10 and transmits the result to the operation server 13 (S519). ). This process may be performed in real time or may be performed in units of memory blocks.

On the other hand, the wireless quality analysis device 200 receives a wireless quality measurement result message from the operation server 13, and analyzes the radio quality of the service area based on the received wireless quality measurement result message (S521, S523). Then, the analysis result is output through the graphic user interface (GUI). Here, the analysis target is the reception quality of the UE, that is, CPICH RSCP, CPICH Ec / Io, BLER, UE Transmitted Power, and UE Rx-Tx Time Difference.

FIG. 6 is a flowchart illustrating a method for measuring asynchronous WCMDA wireless network quality according to another embodiment of the present invention, in which a periodic measurement report message (Periodic MR) is generated to collect radio quality measurement data.

Although not shown in FIG. 6, as shown in FIG. 5, first, the wireless quality analysis apparatus 200 sets a range (cell) for collecting data through the operation server 13 (S501 and S503). That is, the apparatus 200 for analyzing wireless quality controls activation of subcells MSC, RNC, NodeB, SEC, and FA to collect wireless quality measurement data through the operation server 13.

When a mobile communication terminal establishes a call in the set range as described above, the base station controller 11 managing the mobile communication terminal wirelessly transmits a measurement control message MC to the mobile communication terminal via the base station 10. The data is classified and transmitted according to the type of quality measurement data (S601). That is, the first measurement control message (MC) for collecting RSCP and Ec / Io, the second measurement control message (MC) for collecting BLER, and the UE Tx power and the transmission / reception time difference (UE) The third measurement control message (MC) for collecting the Rx-Tx Time Difference is classified according to a measurement identity and transmitted to the mobile communication terminal individually.

At this time, the base station controller 11 sets the measurement report message MR No Report on the first and second measurement control messages MC and finally transmits the third measurement control message to the mobile communication terminal. (MC) adds a measurement report message (MR) generation period (PR: 30 sec), the number of times (inf), and the list of included measurement control messages (MC) (MI = 2, 3).

The mobile communication terminal receiving the measurement control message MC according to the type of the wireless quality measurement data as described above is at predetermined time intervals according to the transmission scheme (period, frequency, inclusion list) set in the third measurement control message MC. The measurement report message MR is transmitted (S603). The measurement report message MR includes radio quality measurement data according to the first, second and third measurement control messages MC. That is, RSCP and Ec / Io, BLER, and UE Tx Power and UE Rx-Tx Time Difference. In this case, when the mobile communication terminal hands over while reporting the measurement report message periodically, the mobile station can process the handover by transmitting and receiving the measurement control message MC and the measurement report message MR once.

Meanwhile, the base station controller 11 transmits a dedicated measurement initiation report (DMIR) to the base station 10 which the mobile communication terminal serves as an active set at the time when the measurement report message MR is received (S605). In response to this, the base station 10 includes the RTT in the dedicated measurement report (DMR) and transmits it to the base station controller 11 (S607).

Then, the base station controller 11 generates a radio quality measurement result message by combining the radio quality measurement data included in the measurement report message (MR) received from the mobile communication terminal and the internal management data (RTT) acquired through the DMR. Transmission to the operation server 13 (S609). The operation server 13 stores the collected wireless quality measurement result message in real time or for a predetermined time and transmits the collected wireless quality measurement result message to the wireless quality analysis apparatus 200 in the form of a file (S611).

FIG. 7 is a flowchart illustrating a method for measuring asynchronous WCMDA wireless network quality according to another embodiment of the present invention, and is another embodiment for generating wireless quality measurement data by generating a periodic measurement report message (Periodic MR).

The method of measuring wireless network quality shown in FIG. 7 is basically similar to the method of measuring wireless network quality shown in FIG. 6. However, in FIG. 6, the base station controller 11 transmits the measurement control message MC having a predetermined period to the mobile communication terminal, and the mobile communication terminal transmits the measurement report message (according to the period set in the measurement control message MC). MR) is transmitted to the base station controller 11. In this case, although a mobile communication service is provided to a mobile communication terminal through a traffic channel, when all traffic services are completed within the reference period, wireless network quality measurement data may not be collected. Therefore, call processing may be required to receive a wireless network quality measurement message immediately after call setup.

As shown in FIG. 7, when any mobile communication terminal sets up a call in an activated subcell, the base station controller 11 transmits a measurement control message MC to the mobile communication terminal for each type of radio quality measurement data. (S701). In this case, a very short time (for example, 250 msec) is set in the last measurement control message MC transmitted to the mobile communication terminal as the transmission period of the measurement report message MR, and the number of times is also set once. Therefore, the mobile communication terminal immediately transmits the measurement report message MR to the base station controller 11 upon receiving the third measurement control message MC (S703).

The base station controller 11 transmits a dedicated measurement initiation report (DMIR) to the base station 10 that the mobile communication terminal serves as an active set at the time when the measurement report message MR is received (S705). The base station 10 receiving the transmission transmits the RTT to the base station controller 11 including the RTT in the dedicated measurement report (DMR) (S707).

Then, the base station controller 11 generates a radio quality measurement result message by combining the radio quality measurement data included in the measurement report message (MR) received from the mobile communication terminal and the internal management data (RTT) acquired through the DMR. The transmission is sent to the operation server 13 (S709).

After collecting radio quality measurement data from the mobile communication terminal immediately after call setup as described above, the base station controller 11 periodically transmits a measurement control message MC to the mobile communication terminal to receive the measurement report message MR ( S711). In this case, the measurement control message MC includes a time period, a number of times of transmitting the measurement report message MR, and information on the measurement control message list included therein. According to the measurement control message MC, the mobile communication terminal transmits the measurement report message MR to the base station controller 11 at a predetermined period (S713).

Meanwhile, the base station controller 11 transmits a DMIR to the base station 10 serving as an active set by the mobile communication terminal at the time of receiving the measurement report message MR (S715). The base station 10 includes the RTT in the DMR and transmits it to the base station controller 11 (S717).

Then, the base station controller 11 generates a radio quality measurement result message by combining the radio quality measurement data included in the measurement report message (MR) received from the mobile communication terminal and the internal management data (RTT) acquired through the DMR. The transmission is sent to the operation server 13 (S719). The operation server 13 stores the collected wireless quality measurement result message in real time or for a predetermined time and transmits the collected wireless quality measurement result message to the wireless quality analysis apparatus 200 in the form of a file (S721).

In the asynchronous WCDMA system, handover between a sector and a sector or a base station and a base station must be performed for continuity of a mobile service. Handover allows a mobile station to automatically tune to a new call channel of a neighboring base station and maintain a call when the busy mobile station moves out of its cell boundary to the neighboring base station service area. Say that.

For this handover, the mobile station generally transmits wireless network quality information measured by the mobile station to the base station. Wireless network quality measurement is performed periodically or at a specific time. Then, the base station 10 receiving the wireless network quality information from the mobile terminal transmits this signal to the base station controller 11, the base station controller 11 analyzes the signal received through the base station 10 to perform a handover The decision is made. Then, the determined message is transmitted to the terminal to perform a handover procedure.

 In addition, in the asynchronous WCDMA system, power control is performed to ensure quality of service. Power control is performed for maximizing the call capacity of the base station and the neighboring base station, and for extending the battery life of the mobile station (terminal) and uniform call quality. For such power control, the mobile terminal may transmit a measurement report message (MR, Periodic MR, Event MR) to the wireless network at a specific time point, and the wireless network may receive power and perform power control using this signal.

FIG. 8A shows a state in which the mobile terminal 30 in a call moves from the A base station 31 service area to the neighboring base station B service area 32, and FIG. 8B shows a pilot of the mobile terminal 30 in this state. This graph shows the change in signal intensity (Ec / Io).

In the graph of FIG. 8B, the measurement report message is transmitted to the system when the simultaneous Ec / Io is above or below a certain level from the A base station 31 to the B 32 base station. Here, the measurement report message includes a field as shown in FIG. 10, and is a message that a mobile terminal measures and reports a radio quality to a system at a specific time point or periodically.

FIG. 8C illustrates that when the Ec / Io of the B base station 32 is above the preset level, the mobile terminal 30 transmits a measurement report message to the radio network side to add the B base station 32 to the radio network side. The network side shows a series of processing procedures for receiving a measurement report message from the mobile terminal 30 to control handover.

First, the base station controller 11 transmits a system information block (SIB) or a measurement control message (MC) to the mobile terminal 30 for handover processing (S801). Here, the measurement control message (MC) is a message defined in asynchronous WCDMA Radio Resource Control (RCC) (3GPP TS 25.331) and includes a field as shown in FIG. 9 and is used to control a terminal in a system.

On the other hand, if the handover condition (T_Add) is satisfied while the mobile terminal 30 is in a call, the system reports a measurement report message (MR) meaning that the base station 32 is included in the radio network side (RAN: base station NodeB). And a base station controller (RNC) (S803).

Then, the system receives the measurement report message (MR) from the mobile terminal 30 to check whether the B base station 32 that is requested to add (ADD) is in the neighbor list. If the B base station 32 is included in the neighbor list, after allocating the resources of the B base station 32, an ASU (Active Set Update) message is transmitted to the mobile terminal 30 (S805). Then, the system transmits the measurement report message MR received from the mobile terminal 30 to the operation server 13 (S807).

After receiving the Active Set Update (ASU) message from the system, the mobile terminal 30 acquires the channel of the B base station 32 and transmits an Active Set Update Complete (ASUC) message to the system. (S809).

FIG. 8D illustrates a call processing procedure based on a periodic measurement report message in an asynchronous WCDMA network.

First, the base station controller 11 transmits a system information block (SIB) or a periodic measurement control message (MC [Peoriodic]: Peoriodic Measurement Control message) to the mobile terminal 30 for handover processing (S810).

Then, the mobile terminal 30 periodically transmits a measurement report message (Measurement Report Message) to the system (RAN: base station (NodeB), base station controller (RNC)) at a predetermined time (S811, S812, S813), the system The measurement report message (Measurement Report Message) periodically received from the mobile terminal 30 is transmitted to the operation server 13 (S814, S815, S816).

In the meantime, when the system receives the measurement report message (Measurement Report Message) above the threshold condition, and transmits an Active Set Update (ASU) message to the mobile terminal 30 (S817), the mobile terminal 30 After the handover process is completed, an Active Set Update Complete (ASUC) message is transmitted to the system (S818).

11 illustrates a wireless quality measurement result message according to an embodiment of the present invention.

As shown in FIG. 11, the wireless quality measurement result message includes a message identifier (Msg ID) field indicating a message type, a serial number identifier (Seq ID) field indicating a serial number of a message occurring in each job, A time field indicating when a message is generated, a mobile terminal identifier uniquely identifying a terminal, a FA field indicating a terminal service frequency, a REF_PSC field indicating a reference PSC, a Number of PSC field indicating a measured number of PSCs, MSC field indicating MSC number in system, RNC field indicating base station controller number in system, NodeB field indicating base station number in system, SEC field indicating sector number in system, PSC indicating PSC in system Field, Common Pilot Channel (CPICH) reception signal code size for storing the reception quality obtained from the terminal Is: (Common Pilot Channel CPICH) contains the Ec / Ic field, BLER (Block Error Rate) field, UE Transmitted Power field, the UE Rx-Tx Time Difference field and the RTT field (received Signal Code Power) field, the co-pilot channel.

12 is a block diagram of an apparatus for analyzing radio quality of an asynchronous WCDMA wireless network according to an embodiment of the present invention.

As shown in FIG. 12, the wireless quality analysis apparatus 200 according to the present invention includes a data collection setting unit 21, a data collection unit 22, a wireless quality analysis unit 23, and an analysis result output unit ( 24).

The data collection setting unit 21 controls the operation server 13 to collect the radio quality measurement data (MSC) 12, base station controller (RNC) 11, base station (NodeB) 10, sector ( sector and frequency assignment (FA).

Collecting all wireless quality measurement data generated by the wireless quality analysis apparatus 200 in the wireless network may cause an overload. In order to prevent such a problem, the data collection setting unit 21 may select a range for collecting the radio quality measurement message.

That is, the data collection setting unit 21 activates an exchange 12, a base station controller 11, a base station 11, a sector, and a frequency assignment (FA) to collect radio quality measurement data. When the call is set up in the subcell, the base station controller (RNC) 11 requests the transmission of a measurement report message (MR message: Periodic MR, Event MR) to the mobile communication terminal, and the operation server 13 is activated. The measurement report message (MR message: Periodic MR, Event MR) is collected for the received subcell.

In addition, the data collection setting unit 21 sets the type of measurement report message (MR message: Periodic MR, Event MR) to be transmitted from the terminal. For example, since the Event MR message is a signaling generated under a condition for performing handover, the Event MR message is generated at an intercell boundary area, and the Periodic MR message is a signaling that is periodically reported. Therefore, considering the load on the system, both the Event MR and Periodic MR messages can be collected or selectively collected.

The measurement data collection unit 22 transmits a measurement report message (MR message: Periodic MR, Event MR) collected from the mobile communication terminal through the operation server 13 according to the setting of the data collection setting unit 21 at a predetermined period. Receive accordingly.

Alternatively, as another embodiment, the wireless quality measurement result message as shown in FIG. 11 may be generated from the message collected by the operation server 13 and transmitted to the measurement data collection unit 22. As shown in FIG. 11, the wireless quality measurement result message generated by the production server 13 is a message identifier (Msg ID) field indicating a message type, and a series indicating a serial number of a message generated in each job. Number ID (Seq ID) field, Time field indicating when the message occurred, Mobile ID uniquely identifying the terminal, FA field indicating the terminal service frequency, REF_PSC field indicating the reference PSC, Measured PSC Number of PSC field for number, MSC field for MSC number of system, RNC field for base station controller number of system, NodeB field for base station number of system, SEC field for sector number of system, system PSC field indicating the PSC which the user has, and a co-pilot channel for storing the reception quality obtained from the terminal (CPICH: Common Pilot). Channel) Received Signal Code Power field, Common Pilot Channel (CPICH) Ec / Ic field, Block Error Rate (BLER) field, UE Transmitted Power field, UE Rx-Tx Time Difference field, and Contains the RTT field.

The wireless quality measurement result message generated by the operation server 13 is generated by combining a measurement report message (MR message: Periodic MR, Event MR) received from the mobile communication terminal and data managed internally by the system manufacturer. Subject to change. For example, Round Trip Time (RTT) is system internal information, and is a value obtained according to a standard (UTRAN lub Interface NBAP signaling: 3GPP TS 25.433) between a base station controller (RNC) and a base station (NodeB). The process of obtaining this is as follows.

First, the base station controller (RNC) 12 transmits a dedicated measurement initiation request (RTT) for acquiring the RTT to the base station (NodeB) 11. The base station (NodeB) 11 then sends a dedicated measurement report message (RTT) including a round trip time (RTT) value to the base station controller (RNC) 12 in response thereto.

Then, the base station controller (RNC) 12 receives the dedicated measurement report message (RTT) received from the base station (NodeB) 11 and the radio quality obtained through the measurement report message (MR) from the mobile communication terminal. After adding the information to generate a radio quality measurement result message, and transmits to the operation server (13). As such, whenever the system transmits the location information message to the wireless quality analysis apparatus 200, it is preferable to perform the above process to transmit the correct RTT.

The wireless quality analyzer 23 extracts various data for measuring wireless quality from a measurement report message (MR message: Periodic MR, Event MR) collected by the measurement data collector 22, and wireless quality of the entire service area. Analyze The radio quality analysis unit 23 uses the radio quality for each switch (MSC), base station controller (RNC) unit, base station (NodeB) unit, sector unit, FA unit, FA and sector unit, and regional unit using RTT. In addition, it can be analyzed by time zone.

The analysis result output unit 24 outputs the result analyzed by the wireless quality analyzer 23 through a Graphic User Interface (GUI).

FIG. 13 is a diagram illustrating a result of analyzing a reception sensitivity (CPICH RSCP) of a mobile communication terminal using a wireless quality measurement result message by a wireless quality analysis apparatus according to an embodiment of the present invention. ) Shows the results of analyzing the frequency of signal strength of the CPICH RSCP for each of a base station controller (RNC), a base station (NodeB), a sector (SEC), and a frequency allocation (FA). Here, the RSCP index value can be coped with the actual dBm representation.

14 is a diagram illustrating a result of analyzing a pilot signal strength (CPICH Ec / Io) by using a wireless quality analysis result message according to an embodiment of the present invention. The results of analyzing the frequency of pilot signal strength (CPICH Ec / Io) for each MSC, base station controller (RNC), base station (NodeB), sector (SEC), and frequency allocation (FA) are shown. Here, the Ec / Io index value can be coped with the actual dB representation.

FIG. 15 is a diagram illustrating a result of analyzing a UE transmitted power by using a wireless quality analysis result message according to an embodiment of the present invention, and FIG. 16 is an embodiment of the present invention. Is a diagram illustrating a result of analyzing a UE Rx-Tx Time Difference by using a wireless quality analysis apparatus according to a wireless quality measurement result message.

FIG. 17 is a diagram illustrating a result of analyzing a reception sensitivity (CPICH RSCP) of a mobile communication terminal according to a round trip delay (RTT) by using a wireless quality analysis result message according to an embodiment of the present invention. Drawing. Similarly, Ec / Io, UE Tx Power, UE Rx-Tx Time Diefference, etc. according to the RTT can be analyzed.

18 is a diagram illustrating a result of analyzing a radio quality of a handover overlap region by a radio quality analysis apparatus according to an embodiment of the present invention using a radio quality measurement result message, wherein MSC ID = 12, RNC = 1, NodeB = 5, SEC = 0 (Alpha) based on the radio quality analysis of the handover overlap region is shown. Here, the active set is a table of " Active Set " information included in each radio quality measurement message, and is shown by counting each message. In this case, through the number of active sets, the corresponding sector is a single area (1 Way) = 34.8%, a dual area (2 Way) = 42%, a triple area (3 Way) = 14.5%, a quadruple area ( 4 Way) = 7.2%, 5 Way = 1.4%. In addition, it is possible to analyze which base station or sector is serving as an active set.

As described above, the method of the present invention may be implemented as a program and stored in a recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.) in a computer-readable form. Since this process can be easily implemented by those skilled in the art will not be described in more detail.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

The present invention as described above, by measuring and analyzing the quality of the wireless network using the message reported from the subscriber station to the system for handover and service quality maintenance, while significantly reducing the cost and manpower required for wireless network quality measurement It is effective to measure and analyze the radio quality of the entire mobile communication network.

Claims (15)

delete delete A method of measuring wireless quality of a wireless network using a location service in an asynchronous WCDMA system including a wireless quality analysis server, a switch, and a base station controller, which performs wireless quality analysis, (a) the radio quality analysis server sending a location service request for a specific subscriber station including a radio quality measurement indication parameter to the exchange; (b) the exchange sending, to the base station controller, a location report request for the subscriber station including the radio quality measurement indication parameter based on the radio quality measurement indication parameter; (c) the base station controller transmitting a radio quality measurement request to the subscriber station based on the radio quality measurement parameter; (d) the base station controller receiving a radio quality measurement report from the subscriber station; And (e) the base station controller extracting data for wireless quality measurement from the wireless quality measurement report and transmitting the extracted data to the wireless quality analysis server; In step (c), the base station controller transmits a radio quality measurement request for each type of data for radio quality measurement, In the step (d), the base station controller, the radio quality measurement method of the asynchronous WCDMA wireless network, characterized in that for receiving one radio quality measurement report containing all the data for radio quality measurement. The method of claim 3, wherein The base station controller periodically receives a radio quality measurement report from the subscriber station. A method of measuring wireless quality of a wireless network using a location service in an asynchronous WCDMA system including a wireless quality analysis server, a switch, and a base station controller, which performs wireless quality analysis, (a) the radio quality analysis server sending a location service request for a specific subscriber station including a radio quality measurement indication parameter to the exchange; (b) the exchange sending, to the base station controller, a location report request for the subscriber station including the radio quality measurement indication parameter based on the radio quality measurement indication parameter; (c) the base station controller transmitting a radio quality measurement request to the subscriber station based on the radio quality measurement parameter; (d) the base station controller receiving a radio quality measurement report from the subscriber station; And (e) the base station controller extracting data for wireless quality measurement from the wireless quality measurement report and transmitting the extracted data to the wireless quality analysis server; In step (e) above, The base station controller is a radio quality measurement method of an asynchronous WCDMA wireless network, characterized in that for transmitting the radio quality analysis data and the round trip time (RTT) obtained from the base station combined. delete A method of measuring wireless quality of a wireless network in an asynchronous WCDMA system including a wireless quality analysis server, a switch, and a base station controller, which performs wireless quality analysis, (a) setting, by the wireless quality analysis server, a wireless quality measurement data collection range and transmitting related information to the base station controller; (b) transmitting, by the base station controller, a radio quality measurement request to a subscriber station that has set up a call in the collection range; (c) receiving, by the base station controller, a radio quality measurement report from the subscriber station; And (d) extracting, by the base station controller, data for wireless quality measurement from the wireless quality measurement report and transmitting the data to the wireless quality analysis server. The method of claim 7, wherein In step (b), the base station controller transmits a radio quality measurement request for each type of data for radio quality measurement, In step (c), the base station controller receives a radio quality measurement report that includes all data for radio quality measurement, the wireless quality measurement method of an asynchronous WCDMA wireless network. The method according to claim 7 or 8, After step (c), Transmitting, by the base station controller, a radio quality measurement request for setting a predetermined transmission period to the subscriber station; And the base station controller receives a radio quality measurement report from the subscriber station according to the transmission period. The method according to claim 7 or 8, In step (d), The base station controller is a radio quality measurement method of an asynchronous WCDMA wireless network, characterized in that for transmitting the radio quality analysis data and the round trip time (RTT) obtained from the base station combined. A method of measuring wireless quality of a wireless network using a subscriber station performing handover in an asynchronous WCDMA system including a wireless quality analysis server and a base station system for performing wireless quality analysis, (a) receiving, by the base station system, a handover request message from a subscriber station entering a handover area; (b) the base station system transmitting a handover indication message to the subscriber station; And (c) extracting, by the base station system, data for wireless quality measurement from the handover request message and transmitting the data to the wireless quality analysis server. delete delete A system for measuring the radio quality of a wireless network in an asynchronous WCDMA system, A switch that performs location reporting control for a subscriber station based on a location service; When receiving a location report request for a specific subscriber station including a radio quality measurement indication parameter from the exchange, the base station controller transmits a radio quality measurement request to the subscriber station based on the radio quality measurement indication parameter and receives a response accordingly. ; And Transmitting a location service request for a subscriber station including a radio quality measurement indication parameter to the exchange, receiving data for radio quality measurement extracted from the response from the base station controller and analyzing the radio quality of the wireless network based thereon; A wireless quality analysis server; The wireless quality analysis server, Set a wireless quality measurement data collection range to transmit relevant information to the base station controller, The base station controller, And receiving a radio quality measurement response from the subscriber station set up in the collection range. The method of claim 14, The base station controller, Wireless quality of the asynchronous WCDMA wireless network, characterized in that for transmitting a wireless quality measurement request for each type of data for wireless quality measurement to the subscriber station, and receiving one wireless quality measurement response including all data for wireless quality measurement. Measuring system.

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