KR100216253B1 - Network interface apparatus for radio port controller of wireless local loop system - Google Patents

Abstract

The present invention relates to a network matching device for RPCs in a WLL system capable of performing E1 / LAPD interface matching between a base station (RP) and a base station controller (RPC) of a wireless subscriber network (WLL) system and between an RPC and an IWF. When the signaling signal and the control signal are LAPD-processed data are transmitted to the D-channel at a primary group subscriber rate of 30B + D in the RP, the D-channel is detected from the data and transmitted to the LAPD processing board in the RPC. After the LAPD processing board performs the layer 3 processing of the D channel, the LAPD processing board transmits the data to the RCCP, which is a management control unit in the RPC. In contrast, when the LAPD processing data is transmitted from the RPC to the RP, the LAPD processing board performs LAPD processing on signaling signals and control signals received from the RCCP. Insert into D-channel and transmit to RP. Data transmission / reception between RPC and IWF is similar to above by digital line trunk board and LAPD processing board in RPC. By enabling the E1 / LAPD interface, it is possible to perform E1 / LAPD interface matching between RP and RPC of WLL system and between RPC and IWF, and to perform IPC between each PBA in RPC. Modularity facilitates system maintenance and scalability.

Description

Network matching device of base station controller (RPC) in wireless subscriber network (WLL) system

The present invention is a base station (Radio Port: hereinafter referred to as 'RP') and a base station controller (Radio Port Controller: hereinafter referred to as 'RPC') of the wireless subscriber network (Wiireless Local Loop: referred to as 'WLL') system It performs E1 / LAPD (Link Access Procedures on the D-channel) interface matching between each other and DHK Inter Working Functions (IWFs), and enables smooth inter processor communication (IPC) of each subsystem in the RPC. A network matching device for an RPC in a WLL system.

In general, WLL system connects network and terminal to provide telephone service by wireless, not wired, and plain ordinary telephone (POT) service such as voice, information communication, fax, as well as high speed data, video and multimedia information. As shown in FIG. 1, a subscriber interface device (Radio Interface Unit: hereinafter referred to as 'RIU') 100-1 to 100-n and the RIU 100-1 to 100-n are provided. RPs 200-1 to 200-n that are wirelessly connected to n) to transmit / receive data, RPCs 300 to control and manage the RPs 200-1 to 200-n, and the RPCs 300 RPOM 400 is connected to the RPC 300, and the IWF 500 and the WLL gateway 600 are connected to the RPC 300.

The WLL system configured as described above has a structure similar to a system such as a digital cellular system (hereinafter referred to as 'DCS') and a personal communication system (hereinafter referred to as 'PCS'). .

However, in the DCS or PCS, the E1 / HDLC frame format is used as the digital trunk interface between the base station and the base station controller. In a WLL system without handoff) and frequent power control, an E1 / LAPD method of a line interface method capable of LAPD processing of a signaling signal and a control signal to a D channel has been proposed.

Therefore, in the WLL system, it is necessary to design a new line interface module suitable for the E1 / LAPD scheme for the line interface between the RP and the RPC.

The present invention has been made in view of the above, and its purpose is to perform E1 / LAPD interface matching between RP and RPC and WPC system between RPC and IWF, and to perform IPC between each PBA in RPC. It is to provide an RPC network matching device in a WLL system.

The RPC network matching device in the WLL system of the present invention for achieving the above object is, when the signaling signal and the control signal LAPD-treated data is transmitted to the D channel at the primary group subscriber rate of 30B + D in the RP From the data, the digital line trunk board detects the D channel and transmits it to the LAPD processing board in the RPC, and then the APD processing board processes the D channel to Layer 3 (Layer 3: hereinafter, L3) and transmits it to RCCP. When data is transmitted from APD processing board, LAPD processes signaling signal and control signal to send to RP, inserts into D channel, and transmits to RP, and data transmission / reception between RPC and IWF is similar to the above. The processing board is made by performing the E1 / LAPD interface.

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

2 is a block diagram of a base station controller (RPC) in a wireless subscriber network (WLL) system according to the present invention

3 is a detailed block diagram of a network matching device of a base station controller (RPC) according to the present invention.

* Explanation of symbols for main parts of the drawings

300: RPC 310: RCCP

320: RPC-CIN 321: HICA

322, 323: HRNA 330: RPC-MSI

331: MSIP 332: LPCA

333: MCIA

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration and operation of the network matching device of the RPC in the WLL system according to the present invention.

2 is a block diagram of an RPC 300 in a WLL system according to the present invention. As shown therein, the RPC 300 of a WLL system processes and controls radio calls of RPs 200-1 to 200-n. And RCCP (Radio Call Control Processor) 310 which integrates and manages various operational information of RPC 300 and is connected to RCCP 310 to perform IPC communication function through matching between PBAs in RPC 300. RPC-CIN Interconnection Network (320) to perform, and is connected to the RPC-CIN (320) between the RP (200-1 ~ 200-n) and the RPC 300 or between the RPC 300 and the IWF (500) RPC-MSI (RPC Mail Service Interface) 330 that matches the E1 primary group subscriber rate (30B + D) and processes Layer 3 protocol (LAPD) of the D-channel, and the RPC-CIN 320 and RPC- TSU (Time Switch Unit) 340 connected to MSI 330 to provide a traffic path, and TCU (TransCoder Unit) 350 connected to TSU 340 to convert traffic data into 64 Kbps PCM data. do.

The network matching device of the RPC in the WLL system according to the present invention comprises an RPC-CIN 320 and an RPC-MSI 330. The RPC-CIN 320 is controlled by the RCCP 310 and the HRNA to be described later. Management and initialization is a High Capacity IPC Control Assembly (HICA) 321 and a High Performance IPC Routing Node Assembly (HRNA) that performs an IPC function between the HICA 321 and each subsystem and provides eight nodes per PBA. 322 and 323, the RPC-MSI 330 is connected to the HRNA 322 to maintain the LPCA and MCIA to be described later, the MSIP 331, and the NSIP 331 is connected to the D channel LPCA (LAPE Protocol Board Assembly) LP322 which processes Layer 3 Protocol (LAPD) of LPC, and is connected to the LPCA 332 to be connected between RP 200-1 to 200-n and RPC 300 and RPC ( 300) and the IWF 500 are configured to match the E1 primary group subscriber speed (30B + D) to transmit the D-channel to the LPCA 332 (MCIA (Mail System CEPT Interface Board Assembly) 333).

3 is a detailed block diagram of each component of the RPC-MSI 330. The MSIP 331 of the RPC-MSI 330 includes a memory 11 in which a switch block is mounted, and the RPC-CIN. A CPU 12 having a redundant structure connected to the HRNA 332 of 320 and maintaining the LPCA 332 and the MCIA 333 according to a command of the RCCP 310, and a bus with the LPCA 332. The TD bus interface unit 13 performs a function of a temporary buffer for communication.

The LPCA 332 is a TD bus interface 21 performing a function of a temporary buffer for bus communication with the MSIP 331, and a DPRAM temporarily storing a data packet to be LAPD-processed in a ROM to be described later. 22, a DRAM 23 for downloading a LAPD protocol source mounted in the system initial setting ROM, a ROM 24 on which the LAPD protocol source is mounted, CKD (Clock Distributor) 25 for generating and distributing a clock signal, cpu 26 for controlling the operation of each component block 22 to 24, and a function of a temporary buffer for bus communication with the mcia 333. It is composed of the lc bus interface unit 27 for performing.

The MCIA 333 is an LC bus interface unit 31 which performs a function of a temporary buffer for bus communication with the LPCA 332, and a bipolar of RPs 200-1 to 200-n inputted from each other. a line interface 32 for converting a bipolar signal into a TTL level unipolar signal or converting a unipolar signal into a bipolar signal for transmitting a frame-formatted transmission data stream to a subscriber line. A trunk hybrid 33 connected to the line interface 32 to perform a primary access function of 30B + D, and an input / output data connected to a fraudulent trunk hybrid 33 T / S switch 34 for performing control of each CEPT interface unit using a stream and transmitting / receiving SHW (Sub HighWay) data and d-channel data, and the T / S switch 34 Temporary buffer The T / S interface unit 35 performs a function to perform a physical function for the connection with the TSU 34.

Referring to the operation of the network matching device of the RPC according to the present invention configured as described above are as follows.

First, data in which the D channel is LAPD-processed at the primary group subscriber speed of 30B + D in the RP 200-1 to 200-n is trunk hybrid with the line interface unit 32 of the MCIA 333 in the RPC 300. When transmitted to the RPC 300 through the 33, the T / S switch 34 of the MCIA 333 detects the D channel, which is the 16th channel, from the E1 frame data, and detects each LC bus interface unit 31. , 27) to the LPCA 332 which is a LAPD processing board.

Accordingly, the LPCA 332 receiving the D channel first inputs the D channel to the defiram 22, and then inputs the D channel by the LAPD protocol loaded on the DRAM 23 in the ROM 24. Processing is performed through the MSIP 331 and the RPC_CIN 320.

On the contrary, when voice and data are transmitted from the RPC 300 to the RP 200, the data is LAPD processed by the LAPD protocol loaded on the DRAM 23 in the ROM 24 of the LPCA 332, thereby performing MCIA. Send to 333.

Then, the T / S switch 34 of the MCIA 333 inserts the LAPD-processed data into the D channel, which is channel 16, and transmits the data to the RPs 200-1 to 200-n.

Meanwhile, the data transmission / reception between the RPC 300 and the IWF 500 is also performed by the LPCA 332 and the MCIA 333 in the RPC 300 performing the E1 / LAPD interface.

That is, when 30B + D from the RP 200 is input to the RPC-MSI 330, the D channel is transmitted to the LPCA 332 and the 30B is transmitted to the TSU 340 to be divided into voice data and character data. do.

The voice data is transmitted to the TCU 350 and the remaining text data is transmitted to the IWF 500 through the MCIA 333.

At this time, the information about the text data is LAPD processed by the LPCA 332 through the RCCP 310 is input to the MCIA 333 through the TSU 340 by the T / S switch 34 of the MCIA 333. .

Subsequently, channel 16 of the character data E1 frame input to the MCIA 333 is inserted into the D channel and transmitted to the IWF 500.

On the contrary, the text data transmission from the IWF 500 to the RPC 300 is combined with voice data processed by the ADPCM through the TCU 350 in the TSU 340 and then transmitted to the RP 200 through the MCIA 333.

At this time, the text data information and the ADPCM processed voice data information are LAPD processed and transmitted on the D channel which is channel 16.

As described above, the present invention can perform E1 / LAPD interface matching between RP and RPC of WLL system and between RPC and IWF, and perform IPC between each PBA in RPC, in particular, modularizing each component block. Therefore, there is an effect that can facilitate system maintenance and scalability.

Claims (4)

WLL including subscriber access devices 100-1 to 100-n, base stations 200-1 to 200-n, base station controller 300, RPOM 400, IWF 500, and WLL gateway 600 In the system, the network matching device of the base station controller 300 is controlled by the RCCP (310) and has a HICA 321 responsible for the management and initialization of the HRNA and 8 nodes for each PBA to provide IPC inter-PBA function RPC-CIN 320 composed of HRNAs 322 and 323 and connected to RCCP 310 to perform an IPC communication function through inter-PBA matching in RPC 300, and HRNAs in RPC-CIN 32. 322 connected to 322 to maintain LPCA and MCIA, an LPCA 332 connected to the MSIP 331 to process layer 3 protocol of the D channel, and connected to the LPCA 332 MCIA (DIA), which transmits the D channel to the LPCA 332 by matching the RP (200-1 to 200-n) between the RPC 300 and the RPC 300 and the IWF 500 at an E1 primary group subscriber speed. 333) is connected to the RPC-CIN (320) Match RP ((200-1 to 200-n) and RPC 300 or RPC 300 and IWF 500 at 30B + D E1 primary group subscriber rate and process Layer 3 protocol of D channel Network matching device of a base station controller (RPC) in a wireless subscriber network (WLL) system, characterized in that consisting of RPC-MSI (330). The MSIP 331 of the RPC-MSI 330 is connected to the memory 11 in which the switch block is mounted and the HRNA 322 of the RPC-CIN 320 to be connected to the RCCP 310. The CPU 12 having a redundant structure for maintaining the LPCA 332 and the MCIA 333 according to a command of the TD bus interface unit 13 performing a function of a temporary buffer for bus communication with the LPCA 332. Network matching device of a base station controller (RPC) in a wireless subscriber network (WLL) system, characterized in that consisting of. The LPCA (332) of the RPC-MSI (330) is a TD bus interface 21 for performing a function of a temporary buffer for the bus communication with the MSIP (331) and the data packet to be LAPD processed And a clock signal generating and distributing the clock signal, a DRAM 23 for downloading the LAPD protocol source mounted in the system setting ROM, a ROM 24 on which the LAPD protocol source is mounted, and a clock signal. The CKD 25, the CPU 26 controlling the operation of each component block 22 to 24, and the LC bus interface 27 performing a function of a temporary buffer for bus communication with the MCIA 333. Network matching device of a base station controller (RPC) in a wireless subscriber network (WLL) system, characterized in that the FH configuration. The method of claim 1, wherein the MCIA 333 of the RPC-MSI 330 is input from the subscriber line and the LC bus interface unit 31 that performs the function of a temporary buffer for the bus communication with the LPCA (332) Line interface 32 for converting bipolar signals of RP 200-1 to 200-n into TTL-level unipolar signals or converting unipolar signals into bipolar signals for transmission of frame-formatted transmission data streams to subscriber lines. And a trunk hybrid 33 connected to the line interface unit 32 to perform a primary access function of 30B + D, and a CEPT interface unit connected to the trunk hybrid 33 using an input / output data stream. T / S switch 34 which performs control and transmits / receives SHW data and transmits / receives D-channel data, and is connected to the T / S switch 34 to perform a temporary buffer function to perform the TSU. With 340 Mangjeong of a base station controller (RPC) in performing the physical function for connecting T / S interface bracket 35 Wireless Local Loop, characterized in that consisting of (WLL) system, the sum unit.

Images