CHAPTER 1: ALCATEL-LUCENT W-CDMA
BBU/RRU SYSTEM
Overview of BBU/RRU Product Offering
Like all other wireless base station equipment OEMs, Alcatel-Lucent offers a
baseband unit (BBU)/remote radio unit (RRU) BTS architecture in additional to
traditional macrocell BTS cabinets.
The 9926 BBU is capable of supporting up to six RRUs. Currently, Alcatel-Lucent
manufactures three different frequency versions of its W-CDMA 9341 RRU product:
850MHz
1900MHz
2100MHz
The 9341 RRU is a 40W 10MHz bandwidth two RF carrier RRU that can handle either
a 1x40W single carrier configuration or a 2x20W dual carrier configuration. A typical
NodeB deployment would consist of one 9926 BBBU plus three 9341 RRUs, one for
each sector in a three sector configuration.
Exhibit 1: Alcatel-Lucent W-CDMA NodeB System
Source: Alcatel-Lucent, EJL Wireless Research LLC (October 2010)
1
© 2010 EJL Wireless Research LLC. All Rights Reserved
www.ejlwireless.com
Exhibit 2: RRU Power Supply Component Diagram
Source: EJL Wireless Research LLC (October 2010)
We have provided a limited bill of materials of the power supply system covering
what we believe are the major components including the transformers, ferrite
inductors and power transistors. The above exhibit provides the component locations
within the power supply unit.
2
© 2010 EJL Wireless Research LLC. All Rights Reserved
www.ejlwireless.com
Table 1: RRU Power Supply Unit Bill of Materials
ID
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Function
Inductor, Ferrite
Transformer
Transformer
Capacitor, Electrolytic, 820uF, 100V
Capacitor, Electrolytic, 1000uF, 50V
Connector, 2 Terminal
Inductor, Ferrite
Terminal Block, 2 Terminals
NA
MOSFET, N-Channel, 150V, 37A
Ultrafast Diode, 200V, 30A
MOSFET, N-Channel, 100V, 57A
MOSFET, N-Channel, 75V, 120A
MOSFET, N-Channel, 200V, 52A
HEXFET, P-Channel, 200V, 6.5A
Secondary Rectifier, 300V, 30A
HEXFET, N-Channel, 55V, 53A
Part Number [Marking]
12943/01 AMW12/08
NA
16248/02 TPE M 08-07
820uF, 100V
1000uF, 50V
Contact DFK-PC16-10.16
PF0976NL
NA
[NPUIC CC086W MAR 823]
[1H30SF FDP2552]
[STTH2002CT GROBF VU CHN 807]
[1H26 FQP70N10]
STP140NF75 [P140NF75 GK098V6]
[BJ09 FDP52N20]
[IRF9630 P802XB]
[STTH2003CT CCOBL4 MAR 822]
[IRFZ46N R803P]
Manufacturer
NA
NA
NA
NA
NA
Phoenix Contact GmbH & Co. KG
NA
Degson Electronics Co. Ltd.
STMicroelectronics
Fairchild Semiconductor
STMicroelectronics
Fairchild Semiconductor
STMicroelectronics
Fairchild Semiconductor
International Rectifier
STMicroelectronics
International Rectifier
Source: EJL Wireless Research LLC (October 2010)
3
© 2010 EJL Wireless Research LLC. All Rights Reserved
www.ejlwireless.com
Package Type
Axial
Axial
TO-220AB
TO-220AB
TO-220AB
TO-220AB
TO-220AB
TO-220AB
TO-220AB
TO-220AB
TO-220AB
Package Size (mm) Qty
30 x 18
2
39 x 36 x 38
1
40 x 25
1
18 mm dia.
3
15 mm dia.
6
1
30 x 18
2
1
1
1
1
1
1
2
1
2
2