HUAWEI AAU-3240

After more than ten years of construction, upgrading and transformation of 2G to 3G mobile networks, a considerable number of sites become more and more tense. The increase of new equipment will greatly increase the cost of construction and operation of operators. In order to meet the increasingly translated mobile broadband applications, operators need to rapidly expand network capacity to meet business growth. At present, the rapid start of LTE construction in China requires the addition of layered LTE (FD and TD) networks on the basis of existing mobile sites, which puts forward new requirements for the space of the site computer room and the location of the sky.

According to the internal investigation and experience, most of the 45% front-line and second tier cities are crowded with daily space, and no independent antennas can be added. Under the mode of multi-frequency and multi-mode network construction, how to efficiently utilize the limited site resources, further enhance network capacity and provide users with better broadband service experience has become the main challenge faced by operators. Active antenna solutions, represented by AAU, are gradually becoming the trend of the industry. From the GSM station in 90s to 2004, China first launched a distributed base station, which has been adapting to the mobile network construction through the innovation of the base station. In the era of mobile broadband MBB, it is necessary to further enhance the network performance to solve the problem of the difficulty of obtaining the surface. It is leading the industry to promote the standardization of active antennas. AAU is called the active antenna unit, as shown in Figure 1, under the network of many frequency bands. The traditional way needs to select two RU to connect to a passive antenna. After adopting AAU, 2 RRU are integrated into the antenna, forming AU of active antenna unit AAU., which effectively integrates the operator's sky resources, simplifies the matching requirements of the sky, integrates the radio frequency unit with the antenna, reduces the feed loss, enhances the coverage effect, and is more suitable for the demand of multi band and multi standard networking, and effectively protects the operation. Business is more important than computer room core assets - surface resources. After using AAU solution, the whole sky becomes simple, reliable and stable. The advantages are: easy deployment, space saving, AAU size is equivalent to single-frequency antenna, reducing the difficulty of location and property coordination. At the same time, the design of cluster cables requires only four feeders to connect AAU with the original AU. With 70% space savings, 30% to 70% capacity gain management efficiency can be achieved. AU itself supports a variety of electrical regulation modes. The antenna can be easily adjusted manually, near-end and far-end. The remote mode can be realized by ASG interface and remote network management communication can be exempted from entering the station. The tower can be exempted, and the maintenance efficiency can be adjusted in real time to avoid business interruption. It saves money and time, realizes rapid construction, reduces the difficulty of property coordination through one deployment, greatly reduces the rental cost of poles, civil works and floors, and reduces the cost of installation projects. According to estimates, AU is adopted.

It can reduce the cost of site construction by 30%. The AAU can integrate two RF units and antennas with different frequency bands. The integration level is 2 times that of the similar products in the industry, helping operators smoothly evolve to HSPA+, LTE and LTE- Advanced without adding RF units or antennas. The maximum number of modules per station can be saved by 75%. It is also the only product in the industry that can support 2 4 4MIMO RF modules, and support beam forming technology. At present, 85% capacity improvement AAU solution is not only an innovation of base station architecture and sky installation mode, but also reflects that the stability and reliability of AAU products have reached a considerable level. As a highly integrated product, AAU has a very good installation location.

In particular, the internal active module must achieve very high reliability.