DBS3900 FDD
With a focus on customer-oriented innovation, Huawei launches a series of products in its SingleBTS product portfolio, including the distributed E-UTRAN NodeB (eNodeB) DBS3900 LTE frequency division duplex (FDD). E-UTRAN is short for evolved universal terrestrial radio access network. The DBS3900 LTE FDD (referred to as DBS3900 in this document) fully utilizes Huawei platform resources and a variety of technologies to meet the challenges of mobile network development.
The eNodeB is used for radio access in the LTE system. The eNodeB mainly performs radio resource management (RRM) functions such as air interface management, access control, mobility control, and user equipment (UE) resource allocation. Multiple eNodeBs constitute an E-UTRAN system.
The DBS3900 has only two types of basic modules: baseband unit (BBU3900) and remote radio unit (RRU), which can be flexibly configured to meet requirements in different usage scenarios. In addition, the DBS3900 features a small size, low power consumption, flexible installation, and easy site deployment.
Energy Saving and Environment Friendly
- Due to their small size and modular design, power amplifiers (PAs) do not take up much space in the equipment room, and resources are saved with the new energy-saving technique. The following measures also help save energy:
- Radio frequency (RF) channels are blocked and power amplifier (PA) voltage is adjusted if the downlink load reaches a preset threshold.
- The power supply unit (PSU) shuts down if the DBS3900 is provided with sufficient power. The temperature control function controls board temperature. Outdoor cabinets work in direct ventilation mode, and RRUs work in natural heat dissipation mode..
Flexible Installation
- Flexible installation of the DBS3900 simplifies site acquisition and achieves fast network deployment with a low total cost of ownership (TCO). To reduce the installation investment, the BBU3900 can be installed on an indoor wall or in a standard cabinet. The RRU can be mounted on a pole, tower, or concrete wall, or close to the antenna system to reduce the cost of feeders and power consumption.
High Transmission Reliability and Board Performance
- The following features are introduced to ensure high transmission reliability and high board performance:
- Support for the Huawei SingleBTS platform
- Support for co-radio resource management (Co-RRM), co-transmission resource management (Co-TRM), co-operation and management (Co-OAM), and co-radio network plan&radio network optimization (Co-RNP&RNO)Support for route backup
- Transmission paths can be switched over to protect high-priority service data.
- Support for the backup of important boards and power modules
- Support for the backup of important boards and power modules
Capacity Specifications
| Item | Specification |
|---|---|
| Maximum throughput per cell (20 MHz) | Downlink throughput at the Media Access Control (MAC) layer: 150 Mbit/s (2 x 2 MIMO) Uplink throughput at the MAC layer: 70 Mbit/s (2 x 2 MU-MIMO or 2 x 4 MU-MIMO) |
| Maximum throughput per eNodeB | Uplink and downlink throughput at the MAC layer: 1500 Mbit/s |
| Maximum number of UEs in RRC_CONNECTED mode per eNodeB | 1.4 MHz: 3024 UEs 3 MHz: 6480 UEs 5 MHz/10 MHz/15 MHz/20 MHz: 10,800 UEs |
| Maximum number of concurrent Data Radio Bearers (DRBs) per UE | 8 |
BBU3900
Transmission Ports
| Board | Specifications |
|---|---|
| UMPT | One FE/GE electrical port, one FE/GE optical port |
Input Power
| Item | Specifications |
|---|---|
| Input power | –48 V DC (voltage range: –38.4V DC to –57V DC) |
Physical Specifications
| Item | Specifications |
|---|---|
| Dimensions (height x width x depth) | 86 mm x 442 mm x 310 mm (3.46 in. x 17.40 in. x 12.20 in.) |
| Weight | ≤ 12 kg (26.46 lb) (in full configuration) |
Environmental Specifications
| Item | Specifications |
|---|---|
| Working temperature | –20°C to +50°C (–4°F to +122°F) (long term) +50°C to +55°C (122°F to 131°F) (short term) |
| Relative humidity | 5% RH to 95% RH |
| Ingress Protection (IP) rating | IP20 |
| Atmospheric pressure | 70 kPa to 106 kPa |
RRU
RRU |
Frequency Band（MHz） | RX Frequency Band（MHz） | TX Frequency Band MHz） | Bandwidth（MHz） | Total Transmit Power（W） | Capability | Specifications |
|---|---|---|---|---|---|---|---|
RRU3201 |
700（band 13） | 777～787 | 746～756 | 5/10 | 2×40 | supports one carrier |
Dimensions: 485mm × 285mm × 170mm (23.5L，with the housing) Weight: ≤19kg（with the housing） |
| 2600（band 7） | 2500～2570 Band C：2500～2520 Band D：2510～2560 Band E：2550～2570 |
2620～2690 Band C：2620～2640 Band D：2630～2680 Band E：2670～2690 |
5/10/ 15/20 |
2×40 | |||
RRU 3203 |
700（band 12） | 698～716 | 728～746 | 1.4/3/ 5/10/15 |
2×40 | supports one carrier |
Dimensions: 485mm × 381mm × 170mm (31.4L，with the housing) Weight: ≤15kg（with the housing） |
RRU3220 |
DD 800（band 20） | 832～847 842～862 |
791～806 801～821 |
5/10/ 15/20 |
2×40 | Supports one carrier |
Dimensions: 400mm × 240mm × 160mm (15L，with the housing) Weight: ≤15kg（with the housing） |
RRU3221 |
2600（band 7） | 2500～2570 | 2620～2690 | 5/10/15/20 | 2×40 | Supports two carriers. |
Dimensions: 485mm × 300mm × 170mm (25L，with the housing) Weight: ≤22kg（with the housing） |
RRU3222 |
DD 800（band 20） | 832～862 | 791～821 | 5/10/ 15/20 |
2×40 | supports one carrier |
Dimensions: 485mm × 300mm × 170mm (25L，with the housing) Weight: ≤20kg（with the housing） |
RRU3223 |
1000 | 962～975 | 1037.5～1058 | 3/5/ 10/20 |
2×40 | supports one carrier |
Dimensions: 485mm × 380mm × 170mm (31L，with the housing) Weight: ≤23kg（with the housing） |
RRU3229 |
2600（band 7） | 2500～2570 | 2620～2690 | 5/10/ 15/20 |
2×60 | supports two carriers. |
Dimensions: 485mm × 300mm × 170mm (25L，with the housing) Weight： ≤22kg（with the housing） |
RRU3240 |
2600（band 7） | 2500～2570 | 2620～2690 | 5/10/ 15/20 |
2×40 | supports two carriers. |
Dimensions: 485mm × 300mm × 170mm (25L，with the housing) Weight： ≤22kg（with the housing） |
RRU3808 |
AWS（band 4） | 1710～1755 | 2110～2155 | 1.4/3/5/ 10/15/20 |
2×40 | Support one carrier |
Dimensions: 485mm × 300mm × 170mm (25L，with the housing) Weight： ≤22kg（with the housing） |
| 2100（band 1） | 1920～1980 | 2110～2170 | 5/10/ 15/20 |
2×40 | |||
RRU3841 |
AWS（band 4） | 1710～1755 | 2110～2155 | 5/10/ 15/20 |
4*30W/ 2*60W |
Support two carriers. |
Dimensions (H x W x D): 485mm × 380 mm × 170 mm (31 L, with the housing) Weight： ≤ 24.5 kg (without the housing) ≤ 26 kg (with the housing) |
RRU3908 V1频段 |
1800（band 3） | 1710～1785 1710～1755 1740～1785 |
1805～1880 1805～1850 1835～1880 |
5/10/20 | 2×30 | Support one carrier |
Dimensions: 480mm × 356mm × 140mm (24L，with the housing) Weight： ≤23kg（with the housing） |
RRU3908 V2频段 |
900（band 8） | 880～915 | 925～960 | 1.4/3/5/ 10/15/20 |
2×40 | ||
| 850（band 5） | 824～849 | 869～894 | 1.4/3/ 5/10 |
2×40 | |||
RRU3926 |
900 | 880 to 915 890 to 915 |
925 to 960 935 to 960 |
1.4/3/5/10 /15/20 |
1x60 | Support two carrier |
Dimensions (H x W x D): 400mm × 240 mm × 160 mm (with the housing) Weight: 15 kg (with the housing) |
| 1800 | 1710 to 1785 | 1805 to 1880 | 1.4/3/5/ 10/15/20 |
1×40 | |||
RRU3928 |
900（band 8） | 880～915 | 925～960 | 1.4/3/5/10/15/20 | 2×40 | Supports two carriers. |
Dimensions： 400mm × 240mm × 160mm (15L，with the housing) Weight： ≤15kg（with the housing） |
| 1800（band 3） | 1710～1785 | 1805～1880 | 1.4/3/5/ 10/15/20 |
2×40 | |||
RRU3929 |
900（band 8） | 880～915 | 925～960 | 1.4/3/5/ 10/15/20 |
2×60 | Supports two carriers. |
Dimensions： 485mm × 380mm × 170mm (31L，with the housing) Weight： ≤25kg（with the housing） |
| 900（P25） | 890～915 | 935～960 | 1.4/3/5/ 10/15/20 |
2×60 | |||
| 1800（band 3） | 1710～1785 | 1805～1880 | 1.4/3/5/ 10/15/20 |
2×60 | |||
RRU3942 |
1900（band 2） | 1850～1910 | 1930～1990 | 1.4/3/5/ 10/15/20 |
2×60 | Supports two carriers. |
Dimensions： 485mm × 380mm × 170mm (31L，with the housing) Weight： ≤25kg（with the housing） |
Table Input power
| Item | Specification |
|---|---|
| Input power | -48 V DC; voltage range: -57 V DC to -36 V DC |
Environment specifications
| Item | Specification |
|---|---|
| Operating temperature | -40°C to +50°C (with solar radiation of 1120 W/m²) -40°C to +55°C (without solar radiation) |
| Relative humidity | 5% RH to 100% RH |
| Absolute humidity | 1 g/m3 to 30 g/m3 |
| Atmospheric pressure | 70 kPa to 106 kPa |
| Operating environment | Compliance standards: 3GPP TS 25.141 V3.0.0 ETSI EN 300019-1-4 V2.1.2 (2003-04) Class 4.1: "Non-weather protected locations" |
| Shockproof protection | NEBS GR63 zone4 |
| Ingress Protection (IP) rating | IP65 |
The DBS3900 addresses site acquisition problems and shortens network deployment time. It enables enterprises to efficiently deploy a wireless network with a low TCO by minimizing the investment in electricity, space, and manpower.
The DBS3900 consists of the BBU3900 and RRU. The BBU3900 is characterized by its small footprint, easy installation, and low power consumption. Therefore, the BBU3900 can be easily installed in a spare space at an existing site. The RRU is compact and lightweight. It can be installed close to an antenna to shorten feeder length and improve system coverage.
Figure 2-10 and Figure 2-11 shows the typical scenarios for installing the DBS3900 outdoors and indoors, respectively.
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