1.1 Positioning

The rapid development in the field of mobile communications technology brings about sharp growth in the number of mobile phone users, which increasingly pose high requirements in the network quality of operators. In urban areas, network quality in places such as office buildings, business centers, and hotels has caught much attention. However, the size, weight, and noise of the BTS normally cause difficulty in acquiring a suitable site for operators during network deployment. Customer-oriented and innovative, Huawei unveils the industry-leading BTS3900E GSM (hereafter referred to as BTS3900E).

Characterized by its small size, large capacity, and low power consumption and only one functional module, the BTS3900E, is an integrated BTS with outstanding performance, which provides an excellent indoor coverage solution for operators. Generally, indoor coverage is accompanied with difficult site selection and high requirements on network performance. The highly integrated BTS3900E is designed with only one functional module. Small and lightweight, the BTS3900E is easy to install and endowed with high capacity and extraordinary performance, rendering it an effective solution for operators. Beyond that, the BTS3900E complies with the International Protection standard IP65. The strong outdoor environment adaptability enables the BTS3900E to fulfill outdoor installation requirements, and to achieve good performance even for coverage in urban hotspots and rural outlying areas.

The BTS3900E supports up to six carriers. Capacity can be expanded through the addition of modules. Each synchronous site supports up to 18 carriers.

1.2 Benefits
Compact Structure and Quick Network Construction

The BTS3900E has a highly integrated design, requiring less cable connections and facilitates installation and maintenance. In compliance with the IP65 protection degree, the BTS3900E features strong environment adaptability and has no need for an equipment room. The BTS3900E can share the Distributed Antenna System (DAS) on the existing network to maximize the investment protection for operators during network upgrade. Meanwhile, the compact and lightweight BTS3900E has a small number of spare parts, thus greatly reducing the cost of transportation and maintenance. The various installation options such as wallmounted, tower-mounted, support-mounted, and pole-mounted are possible with the BTS3900E. These options can well address the operators' requirements for quick and flexible site deployment, significantly accelerating network construction.

Expanded Capacity and Enhanced Coverage

The BTS3900E supports up to six carriers. The capacity of the BTS3900E can be expanded to 18 carriers through the addition of modules. In contrast to conventional indoor coverage solutions, the BTS3900E substantially expands the capacity of the coverage, enhances the traffic absorbing capability, and increases operators' revenues. Since it can be installed close to the antenna system, BTS3900E has a high transmission power at the Top of Cabinet. Combined with the flexibility in site deployment, the BTS3900E remarkably improves network coverage. Drawing on such prominent advantages in coverage and capacity, the BTS3900E can assist operators in enhancing network quality and user experience. Thanks to the advanced Multi-Carrier Power Amplifier (MCPA) technology, the BTS3900E can smoothly and quickly change from the coverage mode to the capacity mode, flexibly responding to network requirements at different phases.

2.1 Overview

With a highly integrated structure, the BTS3900E incorporates all the following functions of conventional BTSs in one functional module:

Transmission

Main control

Baseband processing

RF processing

The BTS3900E has two types of functional modules: AC module and DC module, where the former supports 110 and 220 V AC power inputs and the latter supports –48 V DC power input.