KR20010106347A - Then intergrated WLAN & WCDMA repeater in IP Based Metro Area Network - Google Patents

Abstract

The present invention relates to an intelligent IP based metro area network (MAN) system, which is composed of an optical base station (DONER) and a remote small base station (RPT), and sees an analog optical repeater in an existing optical optical repeater network. It is used as a short-range wireless LAN and IMT2000 digital optical repeater, and can be routed and branched / distributed by FA / sector, which is the signal of IMT2000, to provide flexible and shaded area completely economical IMT2000 communication network, and also IMT 2000 Additional services can be provided using the antenna and optical path of the optical fiber controller.

Compared with the existing technology, the disadvantages of operation and management, maintenance, and cost reduction of base stations that are not serviced by the existing optical repeater are completely solved by using the maximum advantages provided by the IP network for the operation status of many small base stations. ,

The remote small base station has a structure in which the digital signal processing unit and the RF transmission and reception unit are separated as shown in FIG. 2, and the outdoor low-cost small base station installation is limited by distance with optical technology, and all IP-based wired / wireless integration can be accelerated. Broadband Internet service is provided by using base station and repeater network of telecommunication company.

The optical base station is composed of the existing modulation and demodulation signal interface unit for IMT2000 by concentrating and routing the signals received from the small base station (RPT) to WDM 2.5G Packet over SONET (POS) as shown in FIG. It is more economical than Internet service by mobile phone at campus or factory because it is directly connected and provides 11Mbps or more service when using internet.

Description

Integrated IP system for intelligent IP based WLAN and WCDMA {Then intergrated WLAN & WCDMA repeater in IP Based Metro Area Network}

Cell repeater for PCS optical repeater is a RF repeater which occupies FA which is not used as Point to Point method. It is difficult to apply Multicarrier and Multisector.

DRAN for IMT2000 is applied from IS-95C and transmits IF band signal at 2.5Gbs to Remote, but applies up to 8FA, and there is a problem in Full Cell Routing using SDH field. The digital repeater developed by the existing company is expensive and the limitation of operability and wireless LAN service is impossible, and the network repeatability is limited because it is not IPrl class. Therefore, this product has enormous performance and operability compared to the conventional CWDM optical repeater. There are competitive.

2.5G POS (Packet ower SONET) for WDM uses ODMG module package with built-in 2: 1 WDM, Combiner & Coupler, Isolator, Optic Filter and Optic Linker Test, 2.5G HDLC / PPP based Mapper / De Mapper Implement

In MAC Protocol and IP Encapsulation, Up Linker implements protocol based on POS and Interface, LINUX based of MAC S / W and MPC850SR, implements VLAN, MAC Address Download function by Doner Control WCDMA 5M signal PCI connection with PCI Encapsulation signal and WLAN signal Process after connecting FIFO. RF / IF / Baseband (AD / DA) processing implements full 12FA processing module for 4FA processing card type expansion.

It processes SNMP and OAM signals and implements Interface Simple, scalable design and implementation, and GUI of MPC8260 based LINUX Platform after redesigning interface card and BDCU from existing IMT2000 CHC in Doner part of RTS.

FIG. 1 is a configuration diagram of an IP RAN, which is a whole MAN configuration diagram showing connection with an RPT, a RAN (Radio Access Network), and an OPTICAL IP SWITCH by wavelength division around an optical WDM ADD / DROP.

[Figure 2] is an internal configuration diagram of RPT (Remote Repeater) and explains the internal configuration, actual size, temperature condition, and power of the RPT.

FIG. 3 shows the construction of an RPT donor.

CHCI: RTS Channel Card (Modulation) BANK Interface

MCP: GUI, and MAN Routing Control and Subsystem Control

HLMR: 100Base-T MAC Switch and Data Linker Control (can be replaced with existing Layer Switch & Router)

OLP: 2.5G POS (Packet over SONET)

OMX: WDM Combine / Optic Filter with 2.5G X N

end. Remote repeater [Figure 2]

1) WCDMA & WLAN

2) IF part

3) Baseband processor

4) Optical connection part of 2.5G POS

5) IP Data Link Control

I. RTS DONER [FIG. 3]

1) MAC processing & routing department

2) Modulation and Demodulation (BDCU in IMT2000 system) card and ISP interface

3) Optical drive unit with up to 36 2.5G wavelengths for FIXED wavelength and optical receiver with 36 OPTICAL FILTER accommodates 2.5G X 4 channels per card

4) Shelf type system expansion structure according to capacity expansion of RTS channel card.

5) SNMP based GUI to control and monitor intelligent FA / SECTOR routing and ADD / DROP to small base stations

Existing DRAN has a limitation on the number of FA / Sector Routing, and since it is a simple transparent signal in the data signal processor, it can only perform branch / distribution function and broadcasting function of Point to Point, and only repeater function is provided.

It is possible to apply the small optical repeater to the concept of IP optical base station of many Pico Cells on IMT2000, and WLAN service is impossible in the existing optical repeater, but high speed LAN is available through Wireless MAN when applying IP optical base station. Application of 2.5G WDM technology frees FA / sector routing and branching / distribution in existing digital optical repeaters and enables direct ISP access to existing IP networks, thus deploying RF / IP / BDC modules and WLAN APs anywhere Wireless internet service and low-cost optical RPT can be provided at the place.

Wireless MAN is possible, and 11Mbps Internet service is provided in SOHO and Mobility Office within 200M radius, so it is easy to construct Internet INFRA and has general purpose, and technology development of IP Over DWDM (SONET) is integrated into WMAN area. The company can take the lead and reduce the technology fee of Modem Chip and the number of Modem parts imports, which all depend on Qualcomm.

Claims (5)

WLAN and WCDMA antennas are commonly used in 2.5G bands and a single base station performs the functions of an AP and an MAN simultaneously by 2.4G DSSS method during WLAN processing. By converting WCDMA IF signal to baseband 5MHz digital signal and encapsulating it in IP, 100Based-T coming from WLAN and Data Linker processing part can handle at the same time, so there is no restriction on routing of channel (12FA / Sector) and optical WDM Phsical Level Guaranteed QoS by Point-to-Point Connection of 2.5G WDM Level In the existing PCS and Cellulra repeaters, the optical connection part and the RF part are separated, so the RF / IF signal of the existing repeater can be connected based on IP and the signal can be processed by the method specified in Paragraphs 1. and 2. How to use MAN method by installing WLAN module to perform WLAN service How to connect to IP by A / D, D / A at 5Mhz of RF / IF / BASE band Technology that processes central device signal for wireless terminal connection and wireless LAN signal by simultaneously connecting to IP