AAU (Active Antenna Unit)

In the MBB (Mobile Broadband) era, the astonishing growth in data traffic carried by mobile broadband systems brought on by the integration of video, social networking and the overwhelming acceptance of mobile terminals puts severe pressure on existing mobile networks.

In order to meet the expected requirements of massive data traffic and mobile broadband, operators will be compelled to deploy a cellular system with a wider
band in order to provide a better user experience. This requires the
improvement of coverage and capacity, and a mobile broadband network
that can be experienced anywhere at any anytime.

Mobile network
started from a macro site, and then evolved to a DBS (Distributed Base
Station) which saves feeder loss and improves coverage. However, in
response to the mobile network in the MBB era, various challenges still
exist:

• Firstly, due to the co-existence of 2G, 3G and 4G, multi
  bands are introduced. Existing site is too complex; limited space for
  extension. New site acquisition is difficult; residents’ protest against
  potential radiation scare.
• Secondly, technologies such as mTmR (high order MIMO), 3D
  Beamforming, SDB (Software Defined Band) are hard to realize using
  traditional solutions.
• Thirdly, network construction is still not fast and
  flexible enough to quickly satisfy user requirement and enhance user
  loyalty.

Designed to solve these problems, Huawei AAU is an active antenna system which integrates both the radio and antenna system, simplifies the site, speeds up site construction and prepares for the evolution towards the future.

Features

The Huawei AAU family includes: AAU3911/AAU3910, AAU3902, AAU3920, and AAU3940,
which can provide corresponding solutions to operators according to
network requirements. The figure below shows the Huawei AAU family.

• AAU391X Series (Including AAU3910 and AAU3911)

AAU
391X series supports multiple bands and modes simultaneously. It can
effectively solve the problem of limited site space, and is able to
simplify the feeder and antenna system.
AAU 3910 serves for high frequency band (1.8GHz/2.1GHz/ 2.6GHz/AWS/PCS) scenarios, while AAU 3911 serves for both high and low frequency (700~900 MHz) scenarios.

• AAU3902

AAU
3902 is the first product that can support Beamforming in the industry.
With accurate signal beam, network coverage and capacity can be greatly
improved.

• AAU3920

AAU3920
supports ultra wideband, and SDB (Software Define Band) is employed in
order to adjust the frequency and modes by software. It allows operators
to plan out a more long term evolution strategy. Following the rule of
user migration, it can flexibly allocate radio frequency resources
remotely. No site visits are needed, effectively saving TCO

• AAU3940（Easy MacroTM）

AAU3940
has cylindrical design which is environmentally friendly. Its compact
size can deliver an astoundingly large output power as a macro site. It
can be installed on a lamp pole, or directly on a wall, greatly reducing
the difficulties of site acquisition, and improving the efficiency of
network deployment.

 

移动网络创始于宏基站，随后发展到分布式基站节省了馈损大大提升了网络覆盖。然而在应对MBB时代的网络需求上，仍然有各种困难需要解决：


首先，随着2G、3G和4G多种技术的并存与演进，同时多种频谱的引入，现有站点过于复杂，可供新建设备的空间小；新站址获取困难，居民对辐射的抵制强烈；



其次，可提升网络性能的措施如mTmR多通道发射多通道接收（高阶MIMO）、三维波束赋形（3D Beamforming）、软件定义频谱（SDB）等技术在传统方案下实现复杂；



第三，建网仍然不够灵活和快速，在激烈的竞争中，难以及时响应客户需求以及提升客户忠诚度。



华为AAU有源天线系统，正是针对这些困难而设计的基站形式。它集成了射频和天线系统，简化天面，提升覆盖和容量，加快建网，同时面向未来演进。

产品特性

华为AAU解决方案，涵盖AAU3911、AAU3910、AAU3902、AAU3920、AAU3940在内的系列产品，面向运营商不同的场景需求，可提供针对性的解决方案。

AAU391X系列（包括AAU3910和AAU3911）

AAU391X支持多种频谱，多种制式，可有效解决运营商在多模多频时代塔顶空间不足的难题，最大程度简化天面。AAU3910支持高频组合配置（1.8GHz/2.1GHz/
2.6GHz/AWS/ PCS），AAU3911支持高频与低频（700~900 MHz）的组合配置。

AAU3902

AAU3902是业界首款支持Beamforming特性的产品，通过精准波束赋型技术，实现网络容量与覆盖的大幅提升。

AAU3920

AAU3920支持超宽带能力，运用Software Define Radio (SDR)和Software Define Band (SDB)技术，实现制式、频段软件可调。帮助运营商构建多制式、多频谱的中长期网络演进策略，伴随用户迁移，在制式间合理分配射频资源。并且可通过软件手段远程完成调整，无需二次进站，显著降低TCO。

AAU3940（Easy MacroTM）

AAU3940（Easy Macro™）, 其圆筒形外观设计可与周围环境完美融合，小体积却具备宏站级大功率，支持在路灯杆、电线杆和墙面等场景灵活安装，极大地降低站点获取难度，提高网络部署效率。