KR20000037608A - Method for signal processing of terminal station in wireless communication system - Google Patents

Abstract

PURPOSE: A method for signal processing of a terminal station in a wireless communication system is provided to process signal control motion by distinguishing message related each service. CONSTITUTION: A common signal processing part(300) checks an inputted message from an interface part(140) or a modem part(122) is related with general signal such as POTS(Plain Old Telephone Service) signal, ISDN(Integrated Services Digital Network) signal, and leased line. If the message is related to general signal, the common signal processing part(300) reads usable service type of terminal station's subscriber from subscriber's data base and saves the data in a service classification object(bCC_service_type). The common signal processing part(300) checks the service type of inputted message is included in the service type saved in the service classification object. The processing part(300) analyzes the signal state in inputted signal message and stores the data in a state management object. The processing part(300) performs signal control motion indicated by the signal state. If the inputted message is related to operation and repair, the processing part(300) keeps the service type about operation and repair in service classification object. The processing part(300) stores the signal state of the inputted message in operation and repair state management object and executes signal control motion according to the signal state.

Description

Call processing method of terminal station in wireless communication system

The present invention relates to a terminal station of a wireless communication system, and more particularly, to a call processing method of a terminal station.

WLL (Wireless Local Loop) technology has emerged as a temporary solution for long-distance wired communication. The development of semiconductor and digital wireless communication technology has begun to develop in earnest as the problems such as frequency efficiency, wireless channel quality and cost per subscriber are solved. It was. In terms of system construction, WLL is easier to establish subscriber line and shorter service start period than existing wired network which should establish wired preference between telephone company and general subscriber. In terms of service continuity, it can be used as an emergency subscriber line in case wired subscriber network is damaged due to natural disasters, etc. In terms of service provision, Plain Old Telephone Service (POTS), data, and Integrated Services Digital (ISDN) Flexible service can be provided depending on various service needs such as network) and leased line. In terms of required cost, the installation cost is constant regardless of the distance, reducing investment costs and quick recovery of investment costs.

1 is a diagram illustrating a configuration of a terminal station to which the present invention is applied.

The terminal station is divided into an RF processing unit 110, a digital processing unit 120 and an interface unit 140.

The RF processor 110 transmits / receives a signal in an RF band with a base station (not shown) through the antenna 101. The RF processor 110 includes a duplexer, a receiver, a transmitter, a gain control device (not shown), and is connected to the antenna 101 through the duplexer. The receiver converts the received signal of the RF band received from the antenna 101 into a baseband signal. The transmitter converts the baseband transmission signal into an RF band and wirelessly outputs the antenna through the antenna 101. The gain control device performs an operation of keeping the output adjustment and the amplitude of the received signal constant.

The modem unit 122 included in the digital processor 120 performs modulation / demodulation, spread spectrum / despreading, interleaving / deinterleaving, and channel code / decoding operations of bidirectional signals defined in the WLL radio access standard. The transcoder unit 132 inputs user data from the modem unit 122 and performs encoding / decoding operation of voice data among the user data. In addition, the transcoder unit 132 bypasses ISDN and digital data.

The controller 128 performs the overall operation of the terminal station, diagnoses various failures and failures, reports to the base station, and performs a software downloading operation. In particular, the controller 128 inputs and analyzes call-related messages from the modem unit 122 and the interface unit 140 to perform a call control operation.

The memory 126 includes a program driven by the control unit 128 and stores a database of a terminal station user.

The alarm unit 130 detects when a failure occurs in the terminal station under the control of the controller 128 and performs an operation of notifying the subscriber through an MMI (Man Machine Interface) 124.

The interface unit 140 transmits ISDN data, POTS data, and leased line data to corresponding terminals (not shown) under the control of the controller 128, and transmits various data and messages inputted from the terminals. Outputs to).

2 is a view showing the structure of a conventional call control unit. A description with reference to FIG. 1 is as follows.

The call control unit 220 is provided in the control unit 128, and consists of an independent POTS call processing unit 222, operation / maintenance call processing unit 224, ISDN call processing unit 226 and dedicated line call processing unit 228 for each service. The call controller 220 performs an independent call control operation for each service on the call-related message output from the modem 122. That is, when a call-related message is output from the modem unit 122, the POTS call processing unit 222, the operation / maintenance call processing unit 224, the ISDN call processing unit 226, and the dedicated line call processing unit 228 correspond to messages corresponding to the call. Enter and analyze by separating them. Each of the call processing units converts a state management object (bCC_Gen_State) (not shown) provided therein according to the analyzed result and performs a corresponding call control operation. For example, when the ISDN call processing unit 226 receives a message for requesting a call start from the modem unit 122, the ISDN call processing unit 226 stores the call start state in the state management object and stores the interface unit 140 and the modem unit 122. Connect it. As a result, the ISDN subscriber data output from the modem unit 122 is input to the interface unit 140. Thereafter, when the ISDN call processing unit 226 receives a message requesting release of the call from the modem unit 122, the ISDN call processing unit 226 transitions the call start state stored in the state management object to the release state, and the interface unit 140 and the modem unit. The operation of disconnecting the connection 122 is performed.

Similarly, the call controller 220 performs an independent call control operation for each service on the call-related message output from the interface unit 140. That is, when a message is output from the interface unit 140, the POTS call processing unit 222, the operation / maintenance call processing unit 224, the ISDN call processing unit 226, and the dedicated line call processing unit 228 classify the message corresponding to the message. By typing and analyzing. Each of the call processing units converts the state management object (bCC_Gen_State) provided therein according to the analyzed result and performs a corresponding call control operation. For example, the POTS call processing unit 222 stores a call start state in the state management object and generates a corresponding signaling message to the modem unit 122 when a message requesting a call start is input from the interface unit 122. Output Accordingly, the modem unit 122 performs an operation of channel encoding, interleaving, spreading, and modulating the signaling message requesting the call initiation specified in the WLL radio access standard.

On the other hand, the operation / maintenance call output from the interface unit 140 and the modem unit 122 is a call between the base station and the terminal station irrelevant to the user, such as a test message, an error occurrence message, a terminal station status information message. In general, the call controller 220 cannot simultaneously process two kinds of messages related to a user call (hereinafter, referred to as a "general call") such as a POTS call, an ISDN call, and a leased line call. However, the call controller 220 may simultaneously perform a call control operation on a message for a single general call and operation / maintenance call.

As described above, the conventional call control unit is composed of independent processing units for each service, and performs an independent call control operation on an incoming call-related message. As a result, when the terminal station needs to add a new service due to a subscriber's request or the like, a call processing unit corresponding to the new service should be added to the call control unit. This causes the increase of the program according to the new call processing has the disadvantage that the size of the memory 126 is increased. When the user wants to add a new service and tries to limit the program size stored in the memory 126, a new call control unit in charge of call processing for the added service is required. This creates a burden for the user to purchase a new terminal station that supports the added service.

In addition, as described above, since the conventional call control unit is composed of independent processing units for each service and performs an independent call control operation on incoming call-related messages, the interface unit and the modem unit are used to exchange messages with the call control unit for each service. You should always be aware of the passage. However, this causes a disadvantage that the processing procedure for the call control operation in the terminal station is complicated.

Accordingly, an object of the present invention is to provide a method for performing a call control operation by dividing a call-related message for each service by a single common call processing unit provided in a wireless terminal station.

Another object of the present invention is to provide a method for classifying call-related messages input by a single common call processing unit provided in a wireless terminal station for each service and performing a call control operation according to the state of the message.

According to an aspect of the present invention, a method for processing a call of a terminal station in a wireless communication system includes a first process of identifying and storing a service type of an incoming call-related message, and a call state of the call-related message. According to the present invention, a second process of changing a previously stored call state and performing a corresponding call control operation is performed.

1 is a diagram illustrating a configuration of a terminal station to which the present invention is applied.

2 is a view showing the structure of a conventional call control unit.

3 is a diagram illustrating a structure of a common call processing unit according to an embodiment of the present invention.

4 is a flowchart illustrating a method of classifying and processing a message for each service by a common call processor according to an exemplary embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In the following description of the present invention, detailed descriptions of related well-known functions or configurations are omitted when it is determined that the detailed description may unnecessarily obscure the subject matter of the present invention.

3 is a diagram illustrating a structure of a common call processing unit according to an embodiment of the present invention. Hereinafter, a description will be given with reference to FIG. 1 or FIG. 2.

The common call processing unit 300 inputs and analyzes call-related messages from the interface unit 140 and the modem unit 122 to perform a corresponding call control operation. That is, the common call processing unit 300 reads the service type available to the subscriber of the terminal station from the subscriber database and stores the type of service in the service classification object bCC_Service_Type if the input message is related to the general call. The service type may be POTS, ISDN, leased line, or the like. The common call processor 300 checks whether the service type of the input call-related message is included in the service type stored in the service classification object. In addition, the common call processing unit 300 stores the service type corresponding to the operation / maintenance in the service classification object, if the input call-related message is related to the operation / maintenance call. In addition, the common call processor 300 analyzes the state of the call from the input call-related message, and stores the state of the call in the state management object. The common call processing unit 300 performs a call control operation corresponding to the state of the call stored in the state management object. At this time, the state management object is a general call state management object (bCC_Gen_State) for storing the call state of the message related to the general call and operation / maintenance call state management object (bCC_OaM_State) for storing the call state of the message related to the operation / maintenance call Divided into. In addition, the common call processing unit 300 changes the state of a call previously stored in the general call state management object and the operation / maintenance call state management object according to the state of a new call of a later input message and performs a corresponding call control operation.

However, at this time, the call-related message is output from the interface unit 140 and the modem unit 122, it is input to the common call processing unit 300 through a single message path.

On the other hand, the common call processing unit 300 cannot simultaneously process two kinds of messages related to the general call. However, the common processor 300 may simultaneously perform processing operations on a single general call and a message for operation / maintenance call.

4 is a flowchart illustrating a method of classifying and processing a message for each service by a common call processor according to an exemplary embodiment of the present invention. Hereinafter, a description will be given with reference to FIGS. 1 to 3.

When a call-related message is input from the interface unit 140 or the modem unit 122 in step 410, the common call processing unit 300 checks whether the input message is related to the general call in step 420. If the input message is related to the general call, in step 430, the common call processing unit 300 reads the service type available to the subscriber of the terminal station from the subscriber database and stores it in the service classification object bCC_Service_Type. In addition, the common call processor 300 checks whether the service type of the input message is included in the service type stored in the service classification object. In operation 440, the common call processor 300 analyzes the state of the call from the input call-related message and stores the state of the call in the general call state management object and performs a corresponding call control operation according to the state of the call. However, if the input message is not related to the general call in step 420, the message is related to the operation / maintenance call. In step 450, the common call processing unit 300 transmits the service type corresponding to the operation / maintenance to the service classification object. Save it. In operation 460, the common call processor 300 stores the call state of the input message in an operation / maintenance call state management object and performs a corresponding call control operation according to the state of the call.

In the description of FIGS. 3 to 4, in the method for processing a call-related message according to an embodiment of the present invention, a single common call processing unit classifies messages for each service and analyzes and stores a call state to perform a corresponding call control operation. I can see that.

As described above, in the present invention, since a single common call processing unit processes call-related messages, when a service is added to a terminal station, a new call processing unit corresponding to the service is not required. This has the advantage of reducing the size of the running program associated with the call. In addition, since the call-related message is input to the common call processor through a single message path, the procedure for call control operation is simplified.

Claims (5)

In a call processing method of a terminal station in a wireless communication system, A first process of classifying and storing a service type of an incoming call-related message; And a second process of transitioning a previously stored call state according to a call state of the call-related message which is continuously input and performing a corresponding call control operation. The method of claim 1, wherein the first process, And a service type of a message related to a user call and a service type of an operation / repair call. The method of claim 2, wherein the first process, And classifying the service type of the message related to the user's call and the service type of the operation / maintenance call and storing the service type in the service classification object. The method of claim 3, wherein the second process, And storing the call state of the message related to the user's call in a general call state management object and storing the call state of the operation / repair call in an operation / repair call state management object. The method of claim 4, wherein the call-related message that is input, Call processing method of a terminal station, characterized in that input via a single message path.