KR100271310B1 - Method for providing data services - Google Patents

Abstract

The present invention relates to a data service providing method in a wireless subscriber network (WLL), to perform a PC communication service or a PPP Internet service between a WLL subscriber and a predetermined data network interworking device (IWF).

The present invention provides a call connection process in which a call is connected between a predetermined terminal of the WLL subscriber and the IWF, a menu transmission step of transmitting a predetermined menu message to select one of the PC communication service and the PPP Internet service from the IWF to the terminal, and the WLL subscriber. Is a menu selection step in which one of the menus is selected from the terminal and the menu selection information is transmitted to the IWF, the additional message transmission step in which the predetermined additional information message about the menu item selected in the menu selection step is transmitted to the subscriber access device, In case of a PC communication service, a subscriber access device runs a predetermined protocol for a PC communication service, and in the case of a PPP Internet service, a service preparation step in which PPP negotiation proceeds between a terminal and an IWF, and a terminal. Service between PC communication service and PPP Internet service It consists of.

Description

A method to provide data services in Wireless Local Loop systems

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of providing data service in a wireless subscriber network, and more particularly, to a WLL subscriber by using an interworking function (IWF) that is a component of a wireless local loop (WLL). The present invention relates to a communication service and a PPP internet service.

1 is a diagram illustrating a connection between a subscriber access device and a data network interworking device in a WLL. The subscriber access device (Radio Interface Unit) and the data network interworking device include a base station 130 (Radio Port) and a base station controller 140 (Radio Port). It is connected to each other through a controller.

At this time, the subscriber receives the data service using the subscriber station 110 connected to the subscriber access unit 120 (RIU). The subscriber station 110 refers to a personal computer and the like. The PC used for 110 should have a built-in PPP dialer or communication emulator.

Subscriber access unit 120 (RIU) recognizes this when the PC 110 dials the data access number and requests the data call setup to the base station 130, subscriber access unit 120 (RIU) and base station 130: RP Message transfer between) is done wirelessly.

In addition, the base station 130 (RP) recognizes a call setup request from the subscriber access unit 120 (RIU), allocates radio resources, performs a function of requesting call setup to the base station controller 140, and performs a base station controller ( 140 recognizes the call setup request of the base station 130 (RP) and, in the case of a data call, requests the call setup from the data network interworking device 150 (IWF).

In addition, the data network interworking device 150 (IWF) has a data call processing and control function, its own resource management function, operation and maintenance function, data call charging function, information exchange network matching function, base station controller matching function, and base station operation. It performs the device matching function and the charging center matching function.

On the other hand, when performing a data service using a wireless, due to the nature of the wireless section, it is necessary to check the error of the transmitted data and retransmission at the time of error.

Since PPP Internet service uses a protocol such as TCP / IP / PPP, a protocol corresponding to OSI (Open System Interconnection) Layer 2 between subscriber access device (RIU) 120 and data network interworking device 150 (IWF). I do not need this. In case of PC communication service (data service in asynchronous terminal mode), a protocol corresponding to OSI layer 2 between the subscriber access device 120 (RIU) and the data network interworking device 150 (IWF) is used to correct the characteristics of the wireless section. V.120, etc.) is required.

The protocol structure of the subscriber PC 110, the subscriber access device 120, and the data network interworking device 150 in the case of performing the PC communication service is as shown in Figure 2, the protocol structure in the case of performing the PPP Internet service Same as FIG. 3. That is, looking at the protocol structure in the subscriber access device 120, it can be seen that the OSI layer 2 protocol called V.120 is required when performing the PC communication service.

However, after the WLL subscriber dials a predetermined data service access number (e.g., "1421") and call setup is completed, the data network interworking device 150 (IWF) provides a menu corresponding to this access number (e.g., 1. Cheonan, 2.PPP Internet), if the subscriber selects one of them, the subscriber access unit 120 (RIU) does not know which service the subscriber selected, so it does not run the appropriate protocol.

Therefore, when the subscriber wants to use the data service, it is inconvenient to select the corresponding protocol of the subscriber access device 120 (RIU) in advance.

Accordingly, the present invention has been made to solve the above inconvenience, when the WLL subscriber wants to receive the data service, the data network interworking device 150 (IWF) of the appropriate protocol for performing the data service selected by the subscriber It is an object of the present invention to provide a data service providing method in a wireless subscriber network that transmits a type to a subscriber access device (RIU).

In order to achieve the above object, a data service providing method in a wireless subscriber network according to the present invention includes a call connection process of a call is connected between a predetermined subscriber station of a predetermined WLL subscriber and the data network interworking device; A menu transmission step of transmitting a predetermined menu message to select one of a PC communication service and a PPP Internet service from the data network interworking device to the subscriber terminal; A menu selection step of the subscriber selecting one of the menus from the subscriber terminal and transmitting menu selection information to the data network interworking device; An additional message transmission step of transmitting a predetermined additional information message about a menu item selected in the menu selection step to the subscriber access device; When the additional information message relates to a PC communication service, the subscriber access device drives a predetermined protocol for the PC communication service, and when the additional information message relates to a PPP Internet service, a PPP negotiation between the subscriber station and a data network interworking device ( a service preparation step of proceeding negotiation; And a service performing step of performing a PC communication service or a PPP Internet service between the subscriber station and the data network interworking device.

1 is a connection diagram between a subscriber access device and a data network interworking device in the WLL;

2 is a protocol structure diagram at the time of PC communication service;

3 is a diagram of a protocol structure at the time of PPP Internet service;

4 is a flowchart illustrating a data service providing method in a WLL;

5 is a flowchart of a PC communication service procedure in a WLL;

6 is a flowchart for the PPP Internet service procedure in the WLL.

* Explanation of symbols for main parts of the drawings

110: subscriber station 120: subscriber access unit (RIU)

130: base station (RP) 140: base station controller

150: data network interworking device (IWF)

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

4 is a flowchart illustrating a data service providing method in the WLL, FIG. 5 is a flowchart of a PC communication service procedure in the WLL, and FIG. 6 is a flowchart of a PPP Internet service procedure in the WLL.

First, a predetermined WLL subscriber who wants to use a data service in the dialing process (P410) runs a PPP dialer or other communication emulator such as a dial-up networking of Windows 95 on his PC 110 to request a desired data call access number (eg : Dial "1421").

That is, when subscriber's PC 110 is turned on and Windows 95 is running, the subscriber uses Windows 95 to run a PPP dialer or other communications emulator, such as dial-up networking. Then, a predetermined AT command is transmitted from the subscriber's PC 110 to the subscriber access device 120 (RIU), and dialing data such as ATDT014XY (eg, "ATDT01421") is transmitted to the subscriber access device 120 (RIU).

The call connection process (P420) is a process in which a call is connected between the subscriber's PC 110 and the data network interworking device 150 (IWF), and the subscriber access device 120 recognizes the access number and calls the base station 130. The base station 130 requests call setup to the base station controller 140 and allocates a radio channel, and the base station controller 140 recognizes the data call and sets up a call to the data network interworking device 150 (IWF). Procedures requiring this are performed.

In more detail, when a channel request signal (Channel Request) is transmitted from the subscriber access device 120 to the base station 130, the base station 130 transmits a setup request signal (Msg Call) to the base station controller 140. Org), the subscriber access device 120 transmits a channel request signal (ACK) for the channel request signal.

Meanwhile, an acknowledgment message (Msg Call Org Ack) for the setup request signal is transmitted from the base station controller 140 to the base station 130, and the base station 130 receiving the message allocates a channel to the subscriber access device 120. And sends a channel assignment message.

The subscriber access device 120 now sends a connection request message (Connect Request) to the base station 130, the base station 130 sends a connection request message (Connect Request) to the base station controller 140. Then, the base station controller 140 transmits a response message (Connect Response) to the connection request message, and sends a setup message (Setup) to the data network interworking device 150.

The base station 130 receiving the response message (Connect Response) for the connection request message from the base station controller 140 sends a connection response message (Connect Response) to the subscriber access device 120, the subscriber access device 120 is a subscriber Sends a link establishment message (Link Establish) that the link is established to the PC (110).

At this time, the data network interworking device 150 sends a call processing message (Call Processing) to the base station controller 140, and then sends a connection message (Connect). Then, the base station controller 140 sends a connection acknowledgment message (Connect Acknowledge) to the data network interworking device 150, whereby the call connection between the subscriber PC 110 and the data network interworking device 150 is completed.

In the menu transmitting step (S430), as a procedure for transmitting a predetermined menu message for selecting one of a PC communication service and a PPP Internet service from the data network interworking device 150 to the subscriber terminal 110, the data network interworking device 150 ) After the call is connected in the call connection process (P420), the access number is analyzed and the corresponding menu is transmitted to the subscriber PC 110 via the base station controller 140, the base station 130, and the subscriber access device 120.

As an example, the menu transmitted by the data network interworking device 150 to the subscriber PC 110 may have a format such as “1. PC communication, 2.PPP Internet”.

In the menu selection step (S440), the subscriber selects one from the menu displayed on the subscriber PC 110, and the menu selection information is transmitted to the data network interworking device 150.

In the additional message transmitting step S450, a predetermined additional information message about the menu item selected in the menu selection step S440 is transmitted back to the subscriber access device 120.

In more detail, the data network interworking device 150 recognizes the selected menu and uses the layer 3 additional information message of the signaling channel to select information corresponding to the selected service (PC communication service or PPP Internet service). It passes to the subscriber access device 120 via the 140 and the base station 130.

At this time, the layer 3 additional information message may be configured as shown in Table 1 below.

Information Element Length in bytes Protocol identifier One Call Reference 2-? Message type One Selected service One

That is, by inserting " 1 " into the selected service item in Table 1 above, the PC communication service is selected or by inserting " 10 ", so that the PPP Internet service is selected. have.

In the service preparation step (S460), when the additional information message relates to a PC communication service, the subscriber access device 120 runs a predetermined protocol (for example, V.120) for the PC communication service, and relates to a PPP Internet service. If so, PPP negotiation is performed between the subscriber PC 110 and the data network interworking device 150.

Finally, the corresponding data service is performed between the subscriber PC 110 and the data network interworking device 150 (S470).

As described above, using the present invention, even if the WLL subscriber selects either a PC communication service or a PPP Internet service, the subscriber access device 120 accesses a service by a message sent from the data network interworking device 150. Therefore, the WLL subscriber can use the PC communication and PPP Internet service.

Claims (1)

In the method of the subscriber of the wireless subscriber network (WLL) receives a PC communication service or PPP Internet service from a predetermined data network interworking device 150 (IWF), A call connection process in which a call is connected between the predetermined subscriber station 110 of the subscriber and the data network interworking device 150; A menu transmission step of transmitting a predetermined menu message to select one of a PC communication service and a PPP Internet service from the data network interworking device 150 to the subscriber terminal 110; A menu selection step of the subscriber selecting one of the menus from the subscriber terminal 110 and transmitting menu selection information to the data network interworking device 150; An additional message transmission step of transmitting a predetermined additional information message regarding the menu item selected in the menu selection step to the subscriber access device; When the additional information message relates to a PC communication service, the subscriber access device 120 drives a predetermined protocol for the PC communication service, and when connected to a PPP Internet service, interworking with the subscriber terminal 110 and a data network. A service preparation step in which PPP negotiation proceeds between devices 150; And And a service performing step in which a PC communication service or a PPP Internet service is performed between the subscriber station (110) and the data network interworking device (150).