ADCP-75-210 • Issue 1 • March 2007

Table 3. RAN Chassis Electronic Modules

REF #

MODULE NAME

FOR DETAILS REFER TO

6

RAN Down Converter (RDC or RDC2)

Section 1.7.6 on Page 17

 

 

 

7

RAN Up Converter (RUC2.X or RUC3)

Section 1.7.7 on Page 19

 

 

 

8

800 MHz Multi-Coupler

Section 1.7.9 on Page 20

 

 

 

9

1900 MHz Multi-Coupler

Section 1.7.10 on Page 22

 

 

 

10

Fan Access Panel

Section 1.7.8 on Page 20

 

 

 

Figure 7 is a schematic showing the data flow in the RAN chassis, as represented by the PCS-A band. As shown, data flows in two directions, from the Hub through the RAN to the antenna, and from the antenna through the RAN back to the Hub. In each direction, data conversion occurs, with optical data “upconverted” to RF data in the up direction in the schematic, and RF data “downconverted” to optical data in the down direction. In an up direction, the RUC module converts Digitized Intermediate Frequency (DIF) data into PCS, Cellular, and SMR frequency RF bands. The RF signals are amplified and then transmitted from the RF antenna. In the down direction, the RDC module converts PCS, Cellular, and SMR frequency bands into DIF data. The overall series of events is managed by the CPU using an Ethernet connection to the chassis backplane.

MB

ANT

 

 

 

 

 

1900-P

 

 

 

 

 

 

 

 

1900-D

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ANT

 

 

 

 

 

 

 

ANT

 

 

 

 

 

 

 

 

 

 

 

 

PCS QUADPLEXER

 

 

 

 

 

PCS QUADPLEXER

 

 

 

 

 

 

 

 

A

B

 

F

RX

 

 

D

 

 

E

C

RX

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RAN

= Radio Access Node

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DIF

= Digital Intermediate

 

 

 

 

 

 

 

 

 

 

 

 

 

Pri

 

 

Div

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Frequency

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SIF

= Synchronous Interface

 

 

 

 

 

 

 

 

 

 

 

 

 

1900

 

 

 

 

 

RUC

= RAN Up Converter

RAN

MCPA

 

 

 

 

 

 

 

MUL

 

 

 

 

 

MCPA

= Munti-Carrier Power

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Amplifier

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6

 

 

6

 

 

 

 

MB ANT = Multi Band Antenna

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MUL

= Multi-Coupler

 

 

 

 

 

RF

 

 

 

 

 

 

 

Pri

 

 

Div

 

 

 

RDC

= RAN Down Converter

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RUC

 

 

 

 

 

 

 

RDC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DIF

 

 

 

 

 

 

DIF

 

 

DIF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ethernet

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SIF

 

 

 

 

 

 

 

 

 

 

CPU

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fiber Fiber

21777-A

HUB

Figure 7. RAN Chassis Schematic

Page 11

© 2007, ADC Telecommunications, Inc.