KR100353801B1 - Processing method of telephone receiving for wireless local loop system - Google Patents

Abstract

According to the present invention, when a voice call is received while the asynchronous data communication mode is in progress, the voice phone call of the wireless subscriber network system improves the convenience of use by enabling the user to respond to an urgent call by temporarily switching to the voice phone communication mode. Regarding the treatment method,

A first step of determining whether an incoming call is made during an asynchronous data communication mode in a wireless subscriber network (WLL) system; A second step of suspending the asynchronous data communication mode currently in progress and securing a wireless channel of the modem when a voice call is received in the first step; A third step of performing a voice call communication mode by performing a call processing procedure of a voice call through the wireless channel secured in the second step; And a fourth step of restoring the wireless channel to the asynchronous data communication mode and resuming the asynchronous data communication mode in the first step when the voice telephone communication mode is completed in the third step.

Description

Processing method of voice call in wireless subscriber network system {Processing method of telephone receiving for wireless local loop system}

The present invention relates to a voice telephone call processing method of a wireless subscriber network system, and more particularly, when a voice call is received during an asynchronous data communication service, the current asynchronous data communication service is paused and the corresponding modem channel is used for wireless voice call. The present invention relates to a voice telephone call processing method of a wireless subscriber network system which improves the convenience of use by restoring a wireless channel for asynchronous data service after switching to a channel.

In general, the subscriber modem of an asymmetric optical subscriber transmitter (ADSL) such as a wireless local loop (WLL) system or a mobile communication system uses two telephone lines for data communication. It is configured to transmit and receive data by performing any one of the above, and in the voice telephone communication mode to use synchronous data communication, and in the asynchronous data communication mode to perform asynchronous data communication to handle the rapid transmission and reception of a lot of data do.

1 is a block diagram showing the configuration of a typical wireless subscriber network (WLL) system.

Referring to Fig. 1, a subscriber station (RIU) 10, a base station unit (RP) 20, a base station controller (RPC) 30, and the like are configured. At this time, the subscriber device 10 is connected to a computer (PC) through an RS-232C port and a subscriber line interface circuit (SLIC) 11 for converting an analog signal from a telephone into a digital signal and feeding a current to the telephone. A data terminal interface unit (DTIU) 14 which performs a function of transferring asynchronous data of a computer to the modem unit 13 through a serial input / output device (SIO) 12, and the subscriber line interface circuit 11 Transcoder 15 transcoding the digitized data input to PCM / ADPCM / LDCELP / A-CSCELP, and the like, and the data input from the transcoder 15 and the serial input / output device 12 And a modem unit 13 for modulating / demodulating in W-CDMA, a processor 16, and an RF unit 17 for transmitting.

In addition, the base station apparatus 20 includes an RF unit 21, a W-CDMA modem unit 22, a switch unit 23, and a base station controller 30 for processing a radio signal from the subscriber unit 10. And a base station control unit interface unit 24 and a processor 25 matching with each other.

In addition, the base station controller 30 includes a base station interface unit 31 matching with the base station apparatus 20, a switch unit 32 for switching an E1 channelized signal from the base station apparatus 20, and a subscriber unit ( 10) matching with a vocoder device 33, a processor 34, and a public switched telephone network (PSTN) to convert and recover the transcoded signal from the transcoder 15 back to the PCM needed by the exchange. It is composed of a switch matching unit 35, a data communication matching device (36) for matching with a data communication matching device (IWF: interworking function).

In the wireless subscriber network (WLL) system having the above configuration, if the modem unit 13 of the subscriber device 10 is a channel for processing a telephone signal and a channel for processing asynchronous data signals of a computer, a two-channel modem is used. The user can communicate using one channel of telephony and one channel of asynchronous communication at the same time.

However, at present, since the modem unit 13 of most subscriber apparatuses 10 is a modem having a one channel capacity that is difficult to process telephone signals and asynchronous data signals at the same time, the user selects the basic channel as a voice telephone communication service or asynchronous data. You must choose or choose a communication service.

The operation of the wireless subscriber network system having the configuration of FIG. 1 will be briefly described.

First, assuming that the asynchronous data communication service is received, the asynchronous data communication signal is modulated and demodulated in the W-CDMA method by occupying the capacity of one channel of the modem unit 13 via the serial input / output device 12 and then the RF unit ( Communication is carried out to the RF unit 21 of the base station apparatus 20 via 17). At this time, the radio signal is converted into a base band signal, enters the modem unit 22 of the base station apparatus 20, modulates and demodulates the signal by the W-CDMA method, and then converts the signal into an E1 channelized signal and inputs it to the switch unit 23. do. When the switch unit 23 channelizes the E1 signal through a corresponding time slot and sends it to the base station controller interface unit 24, the base station interface of the base station controller 30 through the E1-trunk line. It is delivered to the unit (31). The E1 channelized signal reached to the base station controller 30 is again switched by the switch unit 32 by the command of the processor 34 and then connected to the data communication matching device 36 and connected to the data communication matching device 36. (IWF) to perform the necessary data communication.

2 is a flowchart illustrating a communication mode processing process according to the prior art.

Referring to Fig. 2, it is determined whether the current system is set to the voice telephone communication mode (see S101). If it is set to the voice telephone communication mode, a wireless channel for voice telephone is secured (see S102). (S103) After that, the voice channel is initialized and the wireless channel for voice telephony is initialized to proceed to S101 (see S104).

On the other hand, if the voice telephone communication mode is not set in S101, it is determined whether it is set to an asynchronous data communication mode (see S105). If it is set to an asynchronous data communication mode, a wireless channel for asynchronous data communication is secured (see S106). When the asynchronous data communication is completed, the wireless channel for asynchronous data communication is initialized, and the process proceeds to step S101.

As a result, when the data communication is performed in the wireless subscriber network (WLL) system or the mobile communication system as described above, even if a voice call service is received in the asynchronous data communication mode according to the prior art, the asynchronous data communication service currently being performed is completed and the corresponding wireless communication is performed. If the channel is not restored, the incoming signal cannot be processed, and thus, the voice call service cannot be provided.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and its object is to suspend asynchronous data communication service when a voice call is received during an asynchronous data communication service and to switch the corresponding modem channel to a wireless channel for a voice call. The present invention provides a method for processing an incoming call of a wireless subscriber network system, which improves the convenience of use by recovering a wireless channel for asynchronous data service after use.

1 is a block diagram showing the configuration of a typical wireless subscriber network (WLL) system

2 is a flowchart illustrating a communication mode processing procedure according to the related art.

3 is a flowchart showing a communication mode processing procedure according to the present invention.

<Description of Symbols for Main Parts of Drawings>

10 Subscriber Device (RIU) 11 Subscriber Line Interface Circuit (SLIC)

12: Serial input / output device (SIO) 13: Modem unit

14: Data Terminal Interface Unit (DTIU)

15 transcoder 16 processor

17: RF unit 20: base station apparatus (RP)

21: RF unit 22: modem unit

23: switch unit 24: base station control unit interface unit

25 processor 30 base station controller (RPC)

31: base station interface unit 32: switch unit

33: Vocoder device 34: Processor

35: switch matching unit 36: data communication matching device matching unit

According to a feature of the present invention for achieving the above object, a first step of determining whether the incoming call of the voice call during the operation of the asynchronous data communication mode in a wireless subscriber network (WLL) system; A second step of suspending the asynchronous data communication mode currently in progress and securing a wireless channel of the modem when a voice call is received in the first step; A third step of performing a voice call communication mode by performing a call processing procedure of a voice call through the wireless channel secured in the second step; And a fourth step of restoring the wireless channel to an asynchronous data communication mode when the voice telephone communication mode is completed in the third step, and resuming the asynchronous data communication mode that was performed in the first step. Provides a voice call incoming processing method.

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

3 is a flowchart illustrating a communication mode processing procedure according to the present invention.

1 and 3, first, it is determined whether the asynchronous data communication mode is set (see S1). If the asynchronous data communication mode is set, the wireless channel for asynchronous data communication is secured and then asynchronous data communication service is performed. (See S2)

At this time, if a call is received from a telephone currently connected to the subscriber device 10 in the PSTN network and an incoming signal enters the switch matching unit 35 (see S3), a radio channel is currently used for asynchronous data communication service. (See S4), the processor 34 of the base station controller 30 also checks this fact through the IPC communication between the base station apparatus 20 and the base station controller 30 (the processor of the base station apparatus 20). 25). In S1 and S4, if it is not in the asynchronous data communication mode, it is determined whether the voice phone communication mode is performed and voice voice communication service is performed accordingly (see S5 and S6).

On the other hand, the processor 25 of the base station apparatus 20 again informs the incoming call of the voice call to the processor 16 of the subscriber device 10 as a processing message signal, and the subscriber device 10 also receives a serial input / output device. Send a command to suspend the asynchronous data communication service currently being performed by the computer connected to (12) (see S7), secure a wireless channel currently used for asynchronous data communication (see S8), and process a voice call call. Perform the procedure (see S9).

That is, when the above result is notified to the processor 34 of the base station controller 30 via the base station apparatus 20, the processor 34 of the base station controller 30 processes the incoming signal of the exchange to the subscriber apparatus 10. Pass through the subscriber line interface circuit 11 to the telephone. When the incoming signal is converted into a ring signal and transmitted to the telephone, the user performs voice telephone communication with a subscriber connected to the PSTN network through a modem channel switched for voice telephone.

Then, when the voice telephone communication is completed (see S10), the processor 16 of the subscriber device 10 also restores the modem unit 13 back to the wireless channel for asynchronous data communication (see S11) and again the serial I / O device 12 Send asynchronous data communication recovery command to the connected computer and resume the suspended asynchronous data communication service (see S12).

As described above, the voice telephone call processing method of the wireless subscriber network system of the present invention temporarily switches to the voice telephone communication mode when a voice call is received while the asynchronous data communication mode is performed using one modem channel. By doing so, it is possible to respond to an urgent call, and there is an effect of efficiently using radio resources through a modem.

Claims (1)

A first step of determining whether an incoming call is made during an asynchronous data communication mode in a wireless subscriber network (WLL) system; A second step of suspending the asynchronous data communication mode currently in progress and securing a wireless channel of the modem when a voice call is received in the first step; A third step of performing a voice call communication mode by performing a call processing procedure of a voice call through the wireless channel secured in the second step; And And a fourth step of resuming the asynchronous data communication mode in the first step by restoring the wireless channel to the asynchronous data communication mode when the voice telephone communication mode is completed in the third step. Method of handling voice call in own network system.