KR20070072960A - Method and device for determining of a call type using wireless messages - Google Patents

Abstract

A call decision method using an air message and a device therefor are provided to decide on a wireless call by using the air message, thereby perceiving a cause of disconnection as perceiving whether a basic call processing function requested by a mobile communication terminal is calculated. A data transceiver(122) receives an air message from a mobile communication terminal(110). A data extractor(124) extracts a service option field value within a page response message or an origination message of the air message. A data analyzer(126) compares the read service option field value with a determined communication type to determine a transmission rate and a communication type of the terminal(110).

Description

Method and device for determining call using wireless message {Method and device for determining of a call type using wireless messages}

1 is a block diagram of a system capable of determining a wireless call using a wireless message in accordance with one preferred embodiment of the present invention.

2 is a flowchart illustrating an incoming call processing process of a mobile communication terminal through a general base station.

3 is a flowchart illustrating a process of determining, by a wireless call determination apparatus, a wireless communication type requested by a mobile communication terminal according to an outgoing signal of the mobile communication terminal according to an exemplary embodiment of the present invention.

4 is a table illustrating a call type according to a value of a service option field in an outgoing signaling message according to an embodiment of the present invention.

5 is a flowchart illustrating a process of determining, by the wireless call determination apparatus, whether or not a call is cut by a mobile communication terminal through an air message received from the mobile communication terminal according to an embodiment of the present invention.

6 and 7 are screen shots of the air message according to an embodiment of the present invention.

8 is a graph showing the rate of change of the Tx_adjust field value according to an embodiment of the present invention.

FIG. 9 is a diagram of a screen outputting an L3 message according to an exemplary embodiment of the present invention. FIG.

FIG. 10 is a diagram illustrating a screen outputting a PMRM message according to an exemplary embodiment of the present invention. FIG.

<Explanation of symbols for the main parts of the drawings>

110: mobile communication terminal

120: wireless call determination device

122: data transceiver

124: data analysis unit

126: judgment

The present invention relates to a method and system for determining a wireless call, and more particularly, to a method and system for determining a wireless call through a wireless message.

In general, in order to use a voice or data service for a mobile communication terminal in an idle state in a mobile communication network, a connection should be established to a mobile communication system. At this time, the mobile communication terminal measures the radio wave environment of the current location and requests connection establishment using this information. In addition, when the mobile communication terminal is located at the base station boundary where the signal strengths of two or more base stations or PN channels are similar, the mobile communication terminal measures the signal strength of all base stations or PN channels and transmits the signal strength to the mobile communication system.

In order to analyze the wireless quality (wireless call type, call disconnection type, etc.) of the mobile communication terminal, the analysis tool was generally used by each developer. As a result, the equipment is diversified by using only the technology provided by each developer, which causes a problem that cannot be collectively analyzed.

Accordingly, an object of the present invention for solving the above problems is to provide a method and system that can determine a wireless call using a wireless message irrespective of the company developing the wireless quality measurement.

Another object of the present invention is to provide a method and system for determining a call using a message which can determine whether a normal call processing is required by a mobile communication terminal and determine the cause of the disconnection by determining a wireless call using a wireless message.

Still another object of the present invention is to provide a method and system for determining a call using a message that can be consistently analyzed and can be used by all companies regardless of equipment changes provided by a company developing a wireless quality specification.

Other objects of the present invention will be easily understood through the description of the following examples.

In order to achieve the above object, according to an aspect of the present invention, a wireless call determination apparatus that can determine the type of communication requested by the mobile communication terminal by receiving and analyzing a wireless message from the mobile communication terminal.

According to a preferred embodiment of the present invention, a data transmission and reception unit for receiving an air message (Air message) from the mobile communication terminal; A data extraction unit for extracting a service option field value in an origination message or a page response message among the air messages; And a data analyzer configured to determine a communication type and a transmission rate of the mobile communication terminal by comparing the read service option field value with a predetermined communication type.

The communication type may be any one of voice communication, text message, data communication, and IS-95B data communication.

The data analyzer may determine that the data link is a reverse data communication call when an extended supplemental channel assignment message (ESCAM) is allocated after a supplemental channel request message (SCRM) is received from the mobile communication terminal.

According to another aspect of the present invention, a wireless call determination apparatus capable of determining whether a call is disconnected and the type of call cutting by receiving and analyzing a wireless message from the mobile communication terminal may be provided.

According to a preferred embodiment of the present invention, a data transmission and reception unit for receiving air messages from the mobile communication terminal; A data extractor for extracting one or more field values of the air messages; And a data analysis unit for determining a call disconnection of the mobile communication terminal by determining a time point of changing from a traffic state to a non-traffic state by analyzing the extracted field value, and determining a call disconnection type by analyzing the air messages. A wireless call determination apparatus may be provided.

The call truncation type may be any one of normal reverse call truncation, normal forward call truncation, directional bed frame generation, forward bed frame generation, and L2 message timeout.

The data analyzer may determine a normal reverse call disconnection if the value of the response request field Ack_req in the release message received through the reverse traffic channel is a predetermined reference value.

The data analyzer may determine whether the response request field Ack_req has retransmitted more than a predetermined number of L3 messages including a predetermined reference value for a predetermined time, and may determine that the L2 message has timed out when the predetermined number of retransmissions has been retransmitted. .

The data analyzer may determine whether all the frame error rates (FERs) in the last four received PMRMs for a predetermined time are lost, and if all are lost, may determine that a forward bed frame has occurred.

The data analyzer may determine an average value of the Tx_adjust field value in the call release command message received during the first time before changing to the non-traffic state and the Tx_adjust field value in the call release command message received during the second time. If the difference between the average value of the reference value can be determined that the reverse bed frame occurs.

According to another aspect of the present invention, a method is provided in which a digital processing device is coupled to a mobile communication terminal through a communication network to receive one or more messages from the mobile communication terminal to determine a wireless call.

According to a preferred embodiment of the present invention, a digital processing apparatus is coupled to a mobile communication terminal through a communication network to receive one or more messages from the mobile communication terminal to determine a wireless call, the air message from the mobile communication terminal Receiving an air message; Extracting a service option field value in an origination message or a page response message among the air messages; And determining a communication type and a transmission rate of the mobile communication terminal by comparing the extracted service option field value with a predetermined communication type.

According to another preferred embodiment of the present invention, a digital processing apparatus is coupled via a mobile communication terminal and a communication network to determine a wireless call by receiving and analyzing one or more messages from the mobile communication terminal, Receiving air messages; Extracting a field value of one or more of the air messages; And analyzing the extracted field values to determine when to change from a traffic state to a non-traffic state, to determine whether to disconnect a call of the mobile communication terminal, and to determine a call disconnection type by analyzing the air messages. A wireless call determination method may be provided.

Extracting a response request field value in the release message received on the reverse traffic channel; Determining whether the response request field value is a predetermined reference value; And determining the normal reverse call disconnection if the reference value is determined.

Determining whether a number of L3 messages including a predetermined reference value in the response request field have been retransmitted for a predetermined time or more; And determining that the L2 message has been typed out if the predetermined number or more have been retransmitted.

Determining whether all of the last four FERs of the PMRM received for a predetermined time are lost; And if all are lost, determining that a forward bed frame has occurred.

Calculating a first average value of the Tx_adjust field values in the call release command message received during the first time before changing to the non-traffic state; Calculating a second average value of the Tx_adjust field value in the call release message received during a second time; And calculating a difference value between the first average value and the second average value, and determining that a reverse bed frame has occurred if the difference value is a reference value.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In addition, numbers (eg, first, second, etc.) used in the present specification are for distinguishing the same or similar entities, but the scope of the rights or the objects thereof are not limited thereto.

1 is a block diagram of a system capable of determining a wireless call using a wireless message according to an embodiment of the present invention.

Referring to FIG. 1, a system for determining a wireless call type using a wireless message according to the present invention includes a mobile communication terminal 110 and a wireless call determination device 120.

Here, the wireless call determination device 120 may be connected to a base station transceiver system (BTS) and a base station controller (BSC) through a mobile communication network, and is connected to the mobile communication terminal 110 through a communication network. It may be. That is, the wireless call determination apparatus 120 is directly connected to the mobile communication terminal 110 to send an arbitrary message (for example, an origination message or an incoming response message message from the mobile communication terminal 110). call type and call truncation type requested by the mobile terminal 110 by receiving a response message, an air message or a diagnostic monitor message (hereinafter referred to as a "DM message"). It may be a device for determining.

In addition, the wireless call determination apparatus 120 may be connected to a base station, a base station controller, a home location register (HLR) and a mobile switching center (MSC) through a mobile communication network.

Here, the exchange performs the incoming / outgoing call processing function, the location registration procedure and the handover processing procedure function of the subscriber, and the base station controller is located between the exchange and the base station to perform base station management and control. In addition, the base station performs a baseband signal processing, wired and wireless conversion and wireless signal transmission and reception, and is a network termination device that is directly connected to the mobile communication terminal 110 located in the mobile communication network. The home location register is a database that stores information on the subscriber of the mobile communication service, and serves to provide information on the subscriber to the exchange at the time of registration and reception at the time of origination at the mobile communication terminal.

Referring to FIG. 1, the mobile communication terminal 110 is connected to a base station through a communication network to transmit an outgoing signal message, an incoming response signal message, a DM message, an air message, and the like.

The mobile communication terminal 110 may be a dual band dual mode (DBDM) terminal capable of embedding a plurality of voice codecs (eg, AMR codec, QCELP, EVRC codec, etc.). Here, the DBDM terminal may have a WCDMA chip (AMR codec, etc.) and a CDMA chip (QCELP, EVRC codec, etc.) as each other chip, or may include all the above-described codecs in a single chip, WCDMA and CDMA The same may be applied to a terminal capable of processing voice data used in.

In addition, the mobile communication terminal 110 may process not only voice data but also wireless message and multimedia data.

The wireless call determination apparatus 120 includes a data transceiver 122, a data extractor 124, a data analyzer 126, and a controller 128.

The data transmission / reception unit 122 is connected to the mobile communication terminal 110 or the base station through a communication network to perform a function of transmitting and receiving data.

For example, the data transceiver 122 performs a function of receiving an air message, a DM message, an outgoing signal message, an incoming response signal message, etc. received from the mobile communication terminal 110 and transmitting the received air message to the data extraction unit 124. do.

The data extracting unit 124 extracts an arbitrary field value from the air message, the DM message, the outgoing signal message, and the incoming response signal message inputted through the data transmitting / receiving unit 122 and delivers the data to the data analyzing unit 126. To perform.

For example, suppose that the data transmission / reception unit 122 receives an incoming response signal message from the mobile communication terminal 110 and transmits it to the data extraction unit 124. Then, if the message inputted from the data transmission / reception unit 122 is an incoming response signal message, the data extraction unit 124 extracts a service option field value in the incoming response signal message and transfers it to the data analysis unit 126. do. Of course, the data extractor 124 may extract the service option field value in the outgoing signal message and transmit the extracted value to the data analyzer 126.

In addition, the data extractor 124 may send air messages (eg, an origination message, a service request message, SCRM) from the mobile communication terminal 110 through the data transceiver 122. supplemental channel request message hereinafter referred to as "SCRM"), etc.) may be delivered to the data analyzer 126. Here, the data extractor 124 may store each air message temporarily in a temporary storage space (eg, a buffer, an array, etc.) for a predetermined time.

The data analyzer 126 analyzes field values (eg, service option field values, Tx_adjust field values, etc.) in an outgoing signal message or an incoming response signal message inputted from the data extractor 124, and then the mobile communication terminal 110. Determine the radio call type required by the Rx) and transmit the request command to the mobile communication system through the base station to allocate the radio network and radio resources corresponding to the determined radio call type.

4 illustrates a communication type corresponding to a service option field value in an outgoing signaling message or an incoming response signal message. As shown in FIG. 4, the data analyzing unit 126 stores a service option field value corresponding to a predetermined communication type and stores a service option field in an outgoing signal message or an incoming response signal message received from the mobile communication terminal 110. The type of the wireless communication call requested by the mobile communication terminal 110 may be determined by comparing with the value. That is, as shown in FIG. 4, when the service option field value is “6”, the data analyzer 126 requests that the mobile communication terminal 110 communicate with the SMS text message at the transmission rate defined in the first rateset. It can be judged that.

Here, the first rate set means a transmission rate defined in the communication standard. That is, the first rate set means performing communication at a transmission rate of 9.6 kbps.

Like the first rate set, the second rate set also means communication performed at a transmission rate of 14.4 kbps as a transmission rate defined in the communication standard. As such, the data analyzer 126 may analyze the service option field value to determine the rate set and the radio call type.

The controller 128 controls the internal components of the wireless call determination apparatus 120 (eg, the data transceiver 122, the data extractor 124, the data analyzer 126, etc.). do.

As described above, the wireless call determination apparatus 120 extracts a service option field in an outgoing signal message or an incoming response signal message received from the mobile communication terminal 110 and compares the service option field with a predetermined call type. Can determine the requested communication type, and can also determine the corresponding rate set.

In addition, the wireless call determination apparatus 120 may determine whether the call is disconnected and the call cutting type of the mobile communication terminal 110 by receiving the air message from the mobile communication terminal 110 and analyzing the air message. This will be described in detail with reference to FIG. 3 below.

2 is a flowchart illustrating an incoming call processing process of a mobile communication terminal through a general base station. First, for the convenience of understanding and explanation, the incoming call processing of the mobile communication terminal 110 will be briefly described. Since the call signal processing is not very different, a detailed description thereof will be omitted. Each of the steps below will be described with respect to the incoming call processing based on the air message.

In the present specification, a "reverse channel, reverse link" may be a channel or a link through which the mobile communication terminal 110 transmits a message to a call attempt, paging, or the like. .

In addition, the "forward channel (forward channel)," "forward link" (forward link) means that the base station any command to the mobile terminal 110 for paging messages, synchronization messages, mobile terminal 110 call, channel assignment, etc. It may be a channel or a link for transmitting a signal.

In step 210, the base station transmits a paging message to the mobile communication terminal 110 through the paging channel (paging channel) including the information that can recognize the base station. Here, the paging message is a specific signal repeatedly transmitted from the base station, and includes information that the mobile communication terminal 110 can recognize the base station.

Here, the paging channel is a system configuration information, the base station transmits a signal requesting communication with the mobile communication terminal 110, the base station allocates a traffic channel to the mobile communication terminal 110, a command to inform the page channel change, a specific mobile communication terminal It may be a channel used for transmitting a number of messages and the like for controlling (110).

In step 215, the mobile communication terminal 110 transmits a response message (hereinafter, referred to as a "paging response message") for the paging message received from the base station to the base station through an access channel.

Here, the access channel may be a channel used by the mobile communication terminal 110 for a communication attempt or a response of a paging signal to a base station.

In step 220, the base station receives a paging response message from the mobile communication terminal 110, establishes a communication channel and starts transmitting null communication channel data. When the call channel to be used by the mobile communication terminal 110 is determined, the channel assignment message is transmitted to the mobile communication terminal 110 through the paging channel.

In step 225, the mobile communication terminal 110 establishes a call channel using a channel assignment message received from the base station, transmits a call channel preamble, and starts transmitting a null call channel data. That is, the mobile communication terminal 110 monitors the call channel assigned by the channel assignment message received from the base station and detects two consecutive valid frames. Here, the mobile communication terminal 110 may transmit call channel preamble and null call channel data through a reverse traffic channel.

In step 230, the base station acquires a reverse traffic channel to the mobile communication terminal 110 and transmits a base station acknowledgment message including information for recognizing the base station through a forward traffic channel.

In step 235, the base station transmits a ringing message to the mobile communication terminal 110 through the forward traffic channel.

In step 240, when the mobile terminal 110 starts ringing by the ringing message received from the base station, and the user's response to the incoming call is input, the mobile terminal 110 terminates the ringing and sends the access command to the base station through the reverse traffic channel. To send. As a result, it is possible to make a call with another mobile communication terminal 110. That is, the mobile communication terminal 110 and the base station can establish a traffic channel and can talk to other users through the corresponding traffic channel.

Here, the traffic channel may be a channel that detects the frame data rate and processes the traffic at an appropriate data rate.

3 is a flowchart illustrating a process of determining, by a wireless call determination apparatus, a wireless communication type requested by a mobile communication terminal according to an outgoing signal of the mobile communication terminal according to an embodiment of the present invention, and FIG. Table illustrating a call type according to a value of a service option field in an outgoing call message (or an incoming call answering message) according to a preferred embodiment. Hereinafter, the wireless call determination apparatus 120 is directly connected to the mobile communication terminal 110 to receive an outgoing signal message or an incoming response signal message from the mobile communication terminal 110 to perform wireless communication required by the mobile communication terminal 110. You can determine the type of call. Hereinafter, it will be described on the assumption that the wireless call determination device 120 is located before the base station of the mobile communication system. Each step performed below is performed by each of the internal components of the wireless call determination apparatus 120, but will be collectively described as the wireless call determination apparatus 120 for the convenience of understanding and explanation.

Each operation described below will be described based on the air message, but it should be understood that the same may be applied to a DM message implemented according to each implementation method.

In operation 310, the wireless call determination apparatus 120 extracts a service option field value in an outgoing signal message or an incoming response signal message received from the mobile communication terminal 110.

In operation 315, the wireless call determination apparatus 120 determines whether the extracted service option field value is the first reference value or the first reference value. Here, the first reference value may be, for example, '6', and the second reference value may be '14'. Of course, the first reference value or the second reference value may be changed to different values depending on the implementation method.

If the service option value extracted by the wireless call determination apparatus 120 is the first reference value or the second reference value, the wireless call determination apparatus 120 determines that the communication type requested by the mobile communication terminal 110 is SMS text communication in step 320. It can be determined and controlled to enable SMS text communication.

Also, if the service option field value is the first reference value, the wireless call determination apparatus 120 performs communication at the transmission rate of the first rateset. If the service reference field value is the second reference value, the communication is performed at the transmission rate of the second rateset. Can be controlled to be performed.

However, if it is not the first reference value or the second reference value, in step 325, the wireless call determination apparatus 120 determines whether the service option field value is the third reference value or the fourth reference value. Here, the third reference value may be, for example, '3', and the fourth reference value may be, for example, '32768'.

If the third reference value or the fourth reference value, in step 330, the wireless call determination apparatus 120 may determine that the communication requested by the mobile communication terminal 110 is voice communication and apply the voice communication criteria to enable voice communication. . Since a series of operations for voice communication will be apparent to those skilled in the art, a detailed description thereof will be omitted. In addition, if the service option field value is the third reference value, the wireless call determination apparatus 120 may determine that the communication is at the transmission rate of the first rate set, and if the fourth reference value is the communication at the transmission rate of the second rate set.

However, if it is not the third reference value or the fourth reference value, in step 335, the wireless call determination apparatus 120 determines whether the service option field value is the fifth reference value. Here, the fifth reference value may be, for example, '33'.

If it is determined as the fifth reference value, in step 340, the wireless call determination apparatus 120 determines whether an extended supplemental channel assignment message (ESCAM, hereinafter referred to as "ESCAM") has been allocated after the SCRM is received. .

If it is determined that the ESACM is allocated after the SCRM is received, the wireless call determination apparatus 120 determines that the ESACM is a reverse data call in step 345 and performs an operation corresponding to the radio network or wireless channel allocation to enable corresponding data communication. Can be. Since the operation is obvious to those skilled in the art, detailed description thereof will be omitted.

Here, the "reverse data call" is defined as a data communication request from the mobile communication terminal 110 to the mobile communication system.

However, if the SCRM is not received and it is determined that the ESACM is assigned, in step 350, the radio call determination apparatus 120 determines that it is a forward data call and operates corresponding to the radio network or radio channel assignment to enable corresponding data communication. Can be performed.

Here, the "forward data call" is defined as a data communication request from the mobile communication system (ie, the mobile communication network) to the mobile communication terminal 110.

As described above, the wireless call determination apparatus 120 may determine a communication type required by the mobile communication terminal 110 by extracting a service option field value in an outgoing signaling message or an incoming response signal message and comparing it with a predetermined communication type. have.

FIG. 5 is a flowchart illustrating a process of determining whether a call is disconnected from a mobile communication terminal and a call cutting type by an air message received from the mobile communication terminal according to an exemplary embodiment of the present invention. 7 is a diagram showing a screen of the air message according to an embodiment of the present invention, Figure 8 is a graph showing the rate of change of the Tx_adjust field value according to an embodiment of the present invention, Figure 9 is a view of the present invention FIG. 10 is a diagram illustrating a screen outputting an L3 message, and FIG. 10 is a view illustrating a screen outputting a PMRM message according to an exemplary embodiment of the present invention. Hereinafter, the wireless call determination apparatus 120 will receive the air messages from the mobile communication terminal 110 to determine whether the mobile terminal 110 disconnects the call and the call disconnection type. However, it will be determined by receiving the DM messages. The same may also be applied.

In the present specification, the wireless call determination device 120 may be directly connected to the mobile communication terminal 110 to receive air messages from the mobile communication terminal 110, and also located in front of the base station of the mobile communication system. Air messages transmitted to the terminal 110 may also be received.

Hereinafter, the "traffic state" is defined as a state in which the mobile communication terminal 110 requests call data for transmitting voice data, wireless data, and a wireless message and is transmitting voice data, wireless data, and a message. That is, the traffic state is defined as a state in which a call is actually established through a call channel and a state in which wireless data and a message are being transmitted after the message transmission with the base station is actually completed for call establishment and location registration.

The "non-traffic state" is not a traffic state, but is defined as being a system determination status, an initialization status, a synchronization status, an idle status, or the like. . Here, the initialization status (initialization status) means booting the mobile communication terminal 110, receiving a pilot, a synchronization channel, the idle status (idle status) means that the mobile communication terminal 110 is all systems It means receiving the information and completing normal operation, and then receiving the paging channel continuously.

In addition, hereinafter, it will be described on the assumption that the wireless call determination apparatus 120 can receive and analyze air messages from the mobile communication terminal 110 at predetermined time intervals (for example, ms). Only the messages required for the present invention will be described.

In addition, the steps described below are performed by the respective internal components of the wireless call determination device 120, but will be collectively described as the wireless call determination device 120 for convenience of understanding and explanation. .

In operation 510, the wireless call determination apparatus 120 analyzes an air message received from the mobile communication terminal 110 to determine whether the traffic state has changed from the traffic state to the non-traffic state. As illustrated in FIG. 6, the air message includes both channel information and status information of the mobile communication terminal 110. As illustrated in FIG. 6, the wireless call determination apparatus 120 may detect a state transition by analyzing channel information of air messages received from the mobile communication terminal 110 and determining a time point when the traffic state changes from a traffic state to a non-traffic state. . In FIG. 6, the RTCH is a "reverse traffic channel", which is an uplink unidirectional channel, a channel for transmitting packet type user data, and the PCH is a "paging channel", which is a channel used for a call when the mobile communication terminal 110 is called. Can be.

If it is determined that the traffic state has changed from the non-traffic state, in step 515, the wireless call determination apparatus 120 determines whether the call release request requested by the mobile communication terminal 110 is a normal call release request.

For example, the wireless call determination apparatus 120 determines whether the response request information Ack_req in the release message received on the reverse channel among the air messages is '1', and if it is '1', determines the normal reverse call release request. .

In FIG. 7, detailed information of a release message received on a reverse channel among air messages is illustrated.

If it is determined that the release is normal, the radio call determination apparatus 120 determines that the call release request received from the mobile communication terminal 110 through the reverse channel is a normal call release request in step 520 and correspondingly to the radio network and radio resource. It may be controlled to perform an operation for releasing.

However, if it is determined that it is not a normal release, in step 525, the wireless call determination apparatus 120 determines whether the L2 message is a timeout (L2 message time out). For example, the wireless call determination apparatus 120 determines whether eight or more L3 messages having the response request information ACK_Req of 1 have been retransmitted for a predetermined time (for example, five seconds), and thus, the L3 message. If more than 8 retransmits, it determines that the L2 message has timed out.

In FIG. 9, an L3 message having a predetermined reference value (eg, '1') of the Ack_req field is retransmitted in the same sequence. Here, the L3 message is a message indicating call setup, call control, power control, terminal control, and the like related to call processing.

JSDT-008, which defines the communication standard, defines its own specifications such as three or more L3 messages, nine or more ISO-95Bs, and thirteen or more IS2000s. To determine whether the L2 message timed out. Of course, depending on the implementation method, 3, 9, 13 may be used as reference information as defined in each communication standard, and other information may be used as reference information.

If more than eight L3 messages have been retransmitted, the wireless call determination apparatus 120 determines that the L2 message has timed out in step 530.

However, if more than eight L3 messages have not been retransmitted, the wireless call determination apparatus 120 at step 535 determines whether the frame error rate (FER) in the last four of the PMRM (Power measurement Report message) received from 5 seconds ago is 100%. Determine whether or not. Here, the PMRM may be a message that the mobile communication terminal 110 monitors the FER of the forward link to constantly measure power and report it to the mobile communication system.

Here, 100% FER means that the value of the PWR_MEAS_FRAMES field and the value of the ERROR_DETECTED field are the same in the PMRM message illustrated in FIG. 10.

If the FER is determined to be 100%, in step 540, the wireless call determination apparatus 120 determines that a forward bed frame has occurred.

However, if it is determined that the FER is not 100%, at step 545, the radio call determination apparatus 120 averages the value of the Tx_adjust field value in the order release message 0 to 2 seconds before the non-traffic state is changed. It is determined whether the difference between the value and the average value of the Tx_adjust field value 7 to 8 seconds ago is 10 dB or more.

8 shows a graph of the rate of change of the Tx_adjust field value before changing from the traffic state to the non-traffic state. As shown in FIG. 8, when the transition from the traffic state to the non-traffic state, the difference between the Tx_adjust average value of 7-8 seconds ago and the Tx_adjust average value of 0-2 seconds ago is obvious. Here, the Tx_adjust field value may be an option value used by the mobile communication terminal 110 to adjust the output by the power control command of the base station.

If more than 10dB, the wireless call determination device 120 determines that the reverse bed frame is generated in step 540.

However, if it is not more than 10dB, the wireless call determination device 120 determines that it is normally released in step 555.

As described above, the wireless call determination apparatus 120 receives an air message from the mobile communication terminal 110 at predetermined time intervals and analyzes the same, thereby determining whether the mobile communication terminal 110 is disconnected or not. Can be.

As described above, by providing a method and system for determining a wireless call using a wireless message according to the present invention, it is possible to measure the wireless quality without using equipment provided by a company developing a wireless quality specification. It works.

In addition, the present invention also has the effect of determining the basic call processing settlement required by the mobile communication terminal and determine the cause of the disconnection by determining the wireless call using a wireless message.

In addition, the present invention is capable of consistent analysis regardless of the change in equipment provided by the company developing a specific radio quality, there is an effect that can be used by all companies in common.

Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art to which the present invention pertains without departing from the spirit and scope of the present invention as set forth in the claims below It will be appreciated that modifications and variations can be made.

Claims (15)

A data transmission / reception unit for receiving an air message from the mobile communication terminal; A data extraction unit for extracting a service option field value in an origination message or a page response message among the air messages; And And a data analyzer configured to determine a communication type and a transmission rate of the mobile communication terminal by comparing the read service option field value with a predetermined communication type. The method of claim 1, And the communication type is any one of voice communication, text message, data communication, and IS-95B data communication. The method of claim 1, And the data analyzer determines a reverse data communication call when an extended supplemental channel assignment message (ESCAM) is allocated after a supplemental channel request message (SCRM) is received from the mobile communication terminal. A data transceiver for receiving air messages from a mobile communication terminal; A data extractor for extracting one or more field values of the air messages; And And analyzing the extracted field values to determine when to change the traffic state from the non-traffic state, to determine whether to disconnect the mobile communication terminal, and to analyze the air messages to determine a call disconnection type. Wireless call determination device. The method of claim 4, wherein Wherein the call truncation type is one of normal reverse call truncation, normal forward call truncation, directional bed frame generation, forward bed frame generation, and L2 message timeout. The method of claim 4, wherein And the data analyzer determines normal reverse call disconnection when the response request field (Ack_req) in the release message received on the reverse traffic channel is a predetermined reference value. The method of claim 4, wherein The data analyzer determines whether the response request field Ack_req has retransmitted more than a predetermined number of L3 messages including a predetermined reference value for a predetermined time. Judgment device. The method of claim 4, wherein And the data analyzer determines whether all of the last four frame error rates (FERs) of the power measurement report message (PMRM) received for a predetermined time are lost, and if all are lost, determines that a forward bed frame has occurred. The method of claim 4, wherein The data analyzer may determine an average value of the Tx_adjust field value in the call release command message received during the first time before changing to the non-traffic state and the Tx_adjust field value in the call release command message received during the second time. And determining that a reverse bed frame has occurred if the difference between the mean values of the average values is a reference value. A digital processing apparatus is coupled to a mobile communication terminal through a communication network and receives one or more messages from the mobile communication terminal to determine a wireless call. Receiving an air message from the mobile communication terminal; Extracting a service option field value in an origination message or a page response message among the air messages; And And comparing the extracted service option field value with a predetermined communication type to determine a communication type and a transmission rate of the mobile communication terminal. A method for determining a wireless call by combining a digital processing device with a mobile communication terminal through a communication network, receiving and analyzing one or more messages from the mobile communication terminal, Receiving air messages from a mobile communication terminal; Extracting a field value of one or more of the air messages; And Determining whether to disconnect the call by determining the time of change from the traffic state to the non-traffic state by analyzing the extracted field value, and determining the call disconnection type by analyzing the air messages. Call judgment method. The method of claim 11, Extracting a response request field value in the release message received on the reverse traffic channel; Determining whether the response request field value is a predetermined reference value; And And determining the normal reverse call truncation if it is a predetermined reference value. The method of claim 11, Determining whether a number of L3 messages including a predetermined reference value in the response request field have been retransmitted for a predetermined time or more; And And determining that an L2 message has been typed out if more than the predetermined number has been retransmitted. The method of claim 11, Determining whether all of the last four FERs of the PMRM received for a predetermined time are lost; And And determining that a forward bed frame has occurred if all have been lost. The method of claim 11, Calculating a first average value of the Tx_adjust field values in the call release command message received during the first time before changing to the non-traffic state; Calculating a second average value of the Tx_adjust field value in the call release message received during a second time; And Calculating a difference value between the first average value and the second average value, and determining that a reverse bed frame has occurred if the difference value is a reference value.

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