AAU

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.

Applications & Benefits

Simplified site

• AAU seamlessly and efficiently integrates the radio and antenna systems. One AAU supports one sector’s radio and antenna system, reducing the number of equipment required, simplifying and leaving the site less cluttered.
• AAU supports every series of the main stream spectrum, and is one of the best solutions supporting 5 bands and 3 modes simultaneously.
• AAU integrates multiple ports with the antenna, making mTmR deployment much easier.
• AAU deployment is incredibly flexible. Easy MacroTM is small (150mm*750mm) and light (15kg), and also environmentally friendly.

Fast deployment

• AAU moves the radio unit upward, requiring neither feeder nor jumper, saving on installation time.
• The highly integrated AAU also simplifies packing and installation, which greatly saves transportation time and network deployment.

Improve network performance

• AAU supports 4RX technology; and since the radio unit is moved upward, feeder loss is saved. Both of them improve network coverage and capacity, especially indoor coverage.
• AAU supports Beamforming technology, improving network capacity and user experience.

AAU will develop itself towards the evolution of Massive MIMO and 3D Beamforming, continuously improving network performance.

 

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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。

产品应用和客户利益

简化站点和天面

• AAU实现射频和天线的完美融合，集成度高。一个AAU可支持一个扇区的射频和天线系统，减少设备数量，简化站点。
• AAU支持全系列的主流频段，是实现5个频段和3种制式的最好解决方案之一。
• AAU集成多个天线端口，使mTmR多通道发射多通道接收技术的实现及部署变得更简单易行。
• AAU安装灵活，易选择站点。其中的Easy MacroTM更是小（150mm*750mm）且轻（15kg），外表美观大方，与周围环境易融为一体。

部署快速

• AAU的射频上移，跟传统的“射频+天线”方案相比，无需馈线和跳线，节省安装时间。
• 高度集成的AAU一体化设计，一体化包装，一体化安装，大幅缩减设备运输及站点部署时间。

提升网络性能

• AAU支持4通道接收技术；并且由于射频上移，节省了馈线损耗。这使得覆盖和容量都得到提升，尤其室内覆盖改善明显。
• AAU支持波束赋形技术，提升系统容量和用户体验。
• AAU面向多收多发技术及3D Beamforming的演进，持续提升网络性能

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