KR100488076B1 - Wireless private branch exchange system by ip network - Google Patents

Abstract

The present invention relates to an on-premises wireless switching system using an IP network, comprising: a main control device for performing a TCP / IP interface; The main control unit is connected to the Ethernet and provides a wireless communication system in the premises comprising a plurality of base stations performing a TCP / IP interface. Here, the main controller includes a router for distributing the processing path of the internal control signal and the traffic data; A protocol conversion unit for converting internal control signals and traffic data into a TCP / IP protocol format; At least a TCP / IP interface for performing an interface for transmitting data according to the TCP / IP protocol. The base station includes: a TCP / IP interface unit for performing data conversion according to the TCP / IP standard to perform a matching role for exchanging control signals, voice, and non-voice data with the main controller via Ethernet; At least a protocol converter for converting control signals and traffic data into a TCP / IP format. Therefore, the present invention can facilitate the movement of the location of the base station because the base station and the main control unit can be connected through Ethernet in the premises wireless switching system.

Description

Wireless switching system in premises using IP network {WIRELESS PRIVATE BRANCH EXCHANGE SYSTEM BY IP NETWORK}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless private branch exchange system (IP) using an Internet Protocol Network (IP), and in particular, a connection method between a main controller and a base station that performs a function of transmitting and receiving a radio signal using an IP interface. To an on-premises wireless switching system for providing voice and data services.

1 is a block diagram of a conventional premises wireless switching system.

Referring to FIG. 1, the conventional premises wireless switching system includes a main control unit 10 having a switching function and a main control function, and a base station device for transmitting / receiving a radio signal and a main control unit 10 that implements the overall call processing function of the premises wireless switching system. 110, 120, 130). In the conventional premises wireless switching system, the control signal and traffic data are transmitted between the main control unit 10 and the base station (110, 120, 130) using a fixed wired line.

In the conventional premises wireless switching system, the main controller 10 includes a call control unit 201, a switch control unit 203, a base station interface unit 205, a database 207, and a public network interface unit 209 as shown in FIG. It is composed.

Referring to FIG. 2, the call controller 201 controls the entire call service in the premises wireless switching system, and controls the switch controller 203 for switching between the base station interface unit 205 and the public network interface unit 209. .

In the conventional premises wireless switching system, the base stations 110, 120, and 130 are composed of a control unit 301, an RF control unit 303, a database 305, and a base station interface unit 307 as shown in FIG.

Referring to FIG. 3, the base station interface unit 307 configures a physical connection between the main controller 10 and a logical path through the main controller 10, and transmits traffic and control signals between the main controller 10 and the base stations 110, 120, and 130. Perform the function. The RF controller 303 controls wireless devices for transmitting and receiving radio signals with the portable device, and the controller 301 performs overall control of the base station.

As such, the conventional premises wireless switching system has a structure in which the main controller 10 and the base stations 110, 120, 130 are interlocked through fixed wired lines as shown in FIG. 1. Therefore, the conventional wireless switching system in the premises must secure a fixed line between the main control devices in advance in the location to be installed between the base station in the building, and there is an inconvenience to change the position of these lines each time the base station is moved. .

Accordingly, an object of the present invention is to provide an internal wireless switching system for connecting a main controller and a base station using an IP interface.

Another object of the present invention is to provide an on-premises wireless switching system for transmitting control signals and traffic data between a main control device and a base station via Ethernet in a building instead of a fixed wired line for transmitting control signals and traffic data between the main control device and the base station. In providing.

The present invention for achieving these objects is a main control device for performing a TCP / IP interface; The main control unit is connected to the Ethernet and provides a wireless communication system in the premises comprising a plurality of base stations performing a TCP / IP interface. According to an aspect of the present invention, there is provided a main controller comprising: a router for distributing a processing path of an internal control signal and traffic data; A protocol conversion unit for converting internal control signals and traffic data into a TCP / IP protocol format; At least a TCP / IP interface for performing an interface for transmitting data according to the TCP / IP protocol. In addition, the base station according to the present invention performs a data conversion in accordance with the TCP / IP standard to perform a matching role for exchanging control signals, voice and non-voice data with the main controller over Ethernet Wow; At least a protocol converter for converting control signals and traffic data into a TCP / IP format.

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

Figure 4 is a block diagram of a wireless switching system in the premises connected to the IP network according to the present invention, the main control unit 400 and a plurality of base stations (410 ~ 450) is connected through the Ethernet (Ethernet).

Referring to FIG. 4, the main controller 400 is connected to the public network switch 1, is connected to the system management apparatus 2, is connected to the satellite receiver 3, a plurality of base stations 410 to 450 and Ethernet. Is connected.

5 is a block diagram of the main controller in the premises wireless switching system according to the present invention.

Referring to FIG. 5, in the premises wireless switching system according to an exemplary embodiment of the present invention, the main controller 400 includes a call control unit 501, a TCP / IP interface unit 503, a protocol conversion unit 505, and a reception unit. A buffer 507, a transmission buffer 509, a router 511, a vocoder / decoder 513, a VLR (Visitor Location Register) 515, a voice switch control unit 517, a data switch control unit ( 519, an OAM (Operation, Administration, Maintenance) unit 521, a database 523, a public network interface unit 525, and a data network interface unit 527. The call control unit 501 controls a call of the entire campus wireless switching system. The TCP / IP interface unit 503 interfaces data transmitted and received between the main controller 400 and the base stations 410 to 450 according to the TCP / IP protocol. The protocol converter 505 converts the internal control signal and the traffic data of the main controller 400 into the TCP / IP format. The reception buffer 507 temporarily stores data received through the TCP / IP interface unit 503, and the transmission buffer 509 temporarily stores data to transmit the TCP / IP interface unit 503 to the base station. The router 511 divides the message received through the protocol converter 505 and distributes the message to the voice switch controller 517 and the data switch controller 519. The vocoder 513 converts the voice data received from the base stations 410 to 450 through the TCP / IP interface unit 503 into a PCM signal, and the decoder 513 converts the received PCM signal into voice data. The VLR 515 temporarily stores the visited subscriber information. The voice switch controller 517 switches the voice data transmitted and received through the vocoder / decoder 513 to the public network interface 525. The data switch controller 519 switches the data of the main controller 400 to the data network interface unit 527. The OAM unit 521 diagnoses each function of the main control unit 400 in the premises wireless switching system, and performs status diagnosis management and the like of the base stations 410 to 450. The public network interface unit 525 performs an interface with the public network, and the data network interface unit 527 performs an interface with the data network.

6 is a block diagram of a base station in a premises wireless switching system for performing an IP network according to the present invention.

Referring to FIG. 6, base stations 410 to 450 according to an embodiment of the present invention may include a main controller 601, an RF controller 602, a CDMA channel controller 603, an RF unit 604, and a protocol. It consists of a conversion unit 605 and a TCP / IP interface unit 606. The main control unit 601 controls the overall operation of the base stations 410 to 450, the RF control unit 602 controls the RF unit 604 for transmitting and receiving wireless RF signals, and the CDMA channel control unit 603 is IS- It controls overhead channel and traffic channel for sending and receiving CDMA signal with portable device according to CDMA wireless standard defined in 95A / B standard. The RF unit 604 performs an interface for transmitting and receiving RF signals with the portable device. The protocol converter 605 converts control signals and traffic data of the base stations 410 to 450 into a TCP / IP format. The TCP / IP interface unit 606 performs a data conversion function according to the TCP / IP standard to perform an interface for exchanging control signals, voice, and non-voice data with the main control unit 400 via Ethernet.

As described above, according to the present invention, the connection between the base station and the main control device in the premises wireless switching system may be directly connected to the Ethernet to transmit data with the main control device by using the TCP / IP communication method. Therefore, the present invention can facilitate the installation of the base station in the on-premises wireless switching system, and can easily move the base station. In addition, the present invention can provide a data communication switching service when connected to the premise data communication network by having a packet data switch function in the main controller in the premise wireless switching system.

1 is a block diagram of a conventional premises wireless switching system.

2 is a block diagram of a main controller in the conventional campus wireless switching system.

3 is a block diagram of a base station in a conventional premises wireless switching system.

Figure 4 is a block diagram of an internal wireless switching system capable of IP network according to the present invention.

Figure 5 is a block diagram of a main control device in the premises wireless switching system capable of IP network according to the present invention.

Figure 6 is a block diagram of a base station in the premises wireless switching system capable of IP network according to the present invention.

Claims (3)

In the premises wireless switching system using the IP network, A call control unit for controlling calls of the entire wireless switching system in the premises, a TCP / IP interface unit for interfacing data to and from the IP network according to the TCP / IP protocol, and converting internal control signals and traffic data into the TCP / IP format. A router that divides a message received through the protocol converter, a transmission and reception buffer for temporarily storing data transmitted and received through the TCP / IP interface unit, and a message that is transmitted through the protocol converter and distributes it to a processing path for internal control signals and traffic data. And a vocoder / decoder for converting the received voice data into a PCM signal and converting the received PCM signal into voice data. TCP / IP interface unit for performing data conversion function according to TCP / IP standard to perform IP network interface for exchanging control signal, voice and non-voice data with main controller through Ethernet, and overall operation A main control unit for controlling the control unit, an RF unit for performing an interface for transmitting and receiving an RF signal with the portable device, an RF control unit for controlling the RF unit for transmitting and receiving a wireless RF signal, and for transmitting and receiving a CDMA signal with the portable device. And a plurality of base stations each including a CDMA channel controller for controlling an overhead channel and a traffic channel, and a protocol converter for converting internal control signals and traffic data into a TCP / IP format. The main control device according to claim 1, wherein And an OAM unit for diagnosing each function of the main control unit in the premises wireless switching system and performing status diagnosis management of the base station, and a VLR for temporarily storing visited subscriber information. The method of claim 1, wherein the main control device, It is connected to the public network switch, the system manager, the satellite receiver, A public network interface unit for interfacing with the public network switch, a data network interface unit for interfacing with a data network, a voice switch control unit for switching voice data transmitted and received through the vocoder / decoder to the public network interface unit; And a data switch controller for switching the data of the main controller to the data network interface unit.