BTS3902E WCDMA
Product Description
HUAWEI TECHNOLOGIES CO., LTD.
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Website:
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Issue 1.5 (2012-03-12)
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BTS3902E WCDMA Product Description
Contents
Contents 1 Introduction .............................................................................................................................. 1 1.1 Positioning ....................................................................................................................................................... 1 1.2 Benefits ............................................................................................................................................................ 2
2 Architecture ............................................................................................................................... 3 2.1 Overview .......................................................................................................................................................... 3 2.2 Ports ................................................................................................................................................................. 4
3 Installation and Application Scenarios ................................................................................. 5 3.1 Installation Scenarios ....................................................................................................................................... 5 3.2 Application Scenarios ....................................................................................................................................... 6
4 Technical Specifications .......................................................................................................... 7 5 Acronyms and Abbreviations ............................................................................................... 11
Issue 1.5 (2012-03-12)
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BTS3902E WCDMA Product Description
1 Introduction
1
Introduction
1.1 Positioning The rapid development of mobile communication technology brings sharp growth in the number of mobile phone users. This growth creates increasingly high requirements for network quality. Besides enhancing network coverage, operators also need to increase network capacity to meet rapid increases in traffic volume. In many hot spots, insufficient of network capacity and the existence of blind spots greatly affect user experience. To solve these problems, operators urgently need an accurate and low-cost coverage solution with flexible site deployment. Following the philosophy of continuous innovation based on customers’ requirements, Huawei unveils the industry-leading WCDMA mini base station BTS3902E. Characterized by its small size, light weight, plug-and-play functionality, auto-configuration, and no requirements for shelter or equipment room, the BTS3902E is flexible in site acquisition and deployment, making it a quick and flexible site solution for operators. The BTS3902E is a bi-carrier product. Figure 1-1 shows the unit.
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Page 1 of 14
BTS3902E WCDMA Product Description
1 Introduction
Figure 1-1 BTS3902E
1.2 Benefits Compact Structure for Quick Network Construction With a highly integrated design, the BTS3902 is small, light, and requires less spare parts, making it easy to install and maintain. The BTS3902E features strong environment adaptability and has no need for an equipment room. It can be flexibly mounted on a wall or a pole. The BTS3902E supports both integrated and separated antennas.
Expanded Capacity and Enhanced Coverage The BTS3902E accurately absorbs traffic, and therefore expands network capacity and reduces blind spots. This helps operators enhance network quality and user experience.
Low Power Consumption and Energy Saving The BTS3902E is another green base station launched by Huawei. It assists operators in constructing eco-friendly networks.
Smooth Evolution and CAPEX Saving The BTS3902E supports HSPA+, and can provide high-speed data services in urban hot spots.
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BTS3902E WCDMA Product Description
2 Architecture
2
Architecture
2.1 Overview As shown in Figure 2-1, the BTS3902E is an integrated base station with the following main units: transmission interface unit, main processing unit, baseband processing unit, and RF unit. Figure 2-1 BTS3902E Structure
The function of each unit is as follows:
Transmission interface unit
Provide ports for communication with the RNC and the operation and maintenance (O&M) channels to LMT or M2000.
Main processing unit
Manages the entire BTS3902E in a centralized manner in terms of O&M and signaling processing. Also, provides the system clock.
Baseband processing unit
Schedules and processes the uplink and downlink user-plane data on the Iub interface.
RF unit
Modulates, demodulates, processes, and combines and divides baseband signals and RF signals.
Power Amplifier (PA)
Amplifies low-power RF signals.
Duplexer
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BTS3902E WCDMA Product Description
2 Architecture
Allows a common antenna to receive and transmit signals. It also filters receive and transmit signals.
2.2 Ports The BTS3902E has a modular structure with ports on the bottom panel, cabling cavity panel, and LED area. Table 2-1 shows ports on the BTS3902E. Table 2-1 Ports on the BTS3902E Modules
Port
Description
Bottom panel
ANTA_TX/RX
Port A for transmitting and receiving RF signals
ANTB_TX/RX
Port B for transmitting and receiving RF signals
ANTC_SON
Antenna port of receiver for self-organized network
ETH
FE/GE electrical port
OPT0
FE/GE optical port
OPT1
FE/GE optical port
MON
Environment monitoring port
PWR
Power input
DBG
Debug port/ Clock test port/ Port for software upgrading
Various LEDs
RUN, ALM, ACT, VSWR, O, O/E
LED area
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BTS3902E WCDMA Product Description
3
3 Installation and Application Scenarios
Installation and Application Scenarios
3.1 Installation Scenarios The BTS3902E is ideal in outdoor installation scenarios. It can be installed on a wall, pole, or L-shaped rack. The typical installation scenarios are shown in Figure 3-1. Figure 3-1 Installation scenarios
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BTS3902E WCDMA Product Description
3 Installation and Application Scenarios
3.2 Application Scenarios The BTS3902E works well for covering hot spots and reducing blind spots. Insufficient network capacity in hot spots and blind spots greatly affect user experience. With its flexible deployment, the low-cost BTS3902E helps operators solve these problems. Figure 3-2 shows application scenarios for the BTS3902E. Figure 3-2 Application scenarios
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BTS3902E WCDMA Product Description
4 Technical Specifications
4
Technical Specifications
Table 4-1 shows the technical specifications of the BTS3902E. Table 4-1 Technical specifications Item
Specification
Frequency Band
Frequency Band
Receive Frequency Band (MHz)
Transmit Frequency Band (MHz)
1900 MHz
1850 to 1910
1930 to 1990
2100 MHz
1920 to 1980
2110 to 2170
Capacity
Two cells Uplink: 192 CEs Downlink: 192 CEs
Output power
The BTS3902E supports two carriers. The output power of the antenna connector in the RF module is 2×2.5 W or 1x5W.
Supports single output or MIMO
Single output: the maximum output power for each transmit channel is 5 W
MIMO: the maximum output power is 5 W
Supports configuration of power amplifiers with different power The maximum output power equals the maximum output power of the power amplifier minus the internal loss. The maximum output power is measured at the antenna connector in the RF module.
Receiver sensitivity
Frequency Band
Receive Diversity Sensitivity for Single Antenna (dBm)
Receive Diversity Sensitivity for Double Antenna (dBm)
1900 MHz/2100 MHz
-123.0*
-125.8*
*As recommended in 3GPP TS25.104, receiver sensitivity is measured at the antenna connector on the condition that the data rate over the channel reaches 12.2 kbit/s and the Bit Error Rate (BER) does not exceed 0.001.
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BTS3902E WCDMA Product Description
4 Technical Specifications
Item
Specification
Internal antenna
Gain
> 6 dBi
Polarization mode
±45°
Directionality
Directional
Vertical lobe width (3 dB)
> 33°
Horizontal lobe width (3 dB)
> 60°
VSWR
