LTE Air interference

Air Presentation

This presentation is about the new antenna-integrated radio, or AIR for short. You will se in this presentation that AIR gives you: the best RF performance and power efficiency a clean tower appearance, and a simplified installation And perhaps most important of all: The first AIR variants are commercially available. They are being produced and deployed in volumes.

RBS 6000

AIR - The antenna-integrated radio unit can be seen in the middle of the front row. It is one of the latest member of the RBS 6000 family. You see a set of different radios in the front row, starting from left in the front row with the traditional macro RUS followed by the remote unit (RRUS), the micro (mRRU) and then AIR. The picos and WiFi access points in the back row completes the 6000 radio portfolio. AIR is a full fledge member of the 6000 family. It uses the same base-band units, seen just to the right of AIR, as the RUS, RRUS and mRRU. The feature set is basically the same, but AIR brings some improvements, especially for the up-linik. We will get back to this. ---

AIR variant

There is only one AIR variant in most of picture we show, but AIR is nevertheless a family of product variants. It is of course not feasible to have hundreds, or even thousands, of AIR variants to match all antennas on the market in combination with all different radios, but AIR’s modular design enables a quite extensive range of product variants. The mid-section where the active electronics is housed is the same for all variants, but we can offer four different lengths and two different widths. We can offer single column or dual column variants. There are low-band, high-band, and combined low/high-band combinations. (Low bands include 700—900 MHz, and high-band include 1700—2600 MHZ.) The height spans from 1.4 m (4’8”) through 2.0 m (6’6”) and 2.4 m (8’) and up to 2.6 (8’8”) m. Most units variants are 30 cm (122) wide. There are a few advanced units with low band included that are 37 cm (14½”) wide. The middle part is for most variants 20 cm (8”). ---

AIR’s functionality is straight forward:

We have combined three functions into one: a dual TX remote radio unit, RRU an antenna for the RRU, and another antenna for yet another frequency band This is done within an outline that is very similar to a regular antenna with the same radiation pattern that you get from AIR. A site solution with AIR is much cleaner than an antenna/RRU solution. There are only three basic types of interfaces: Optical fibers for CPRI that connects to a base-band just like an RRU. Power for the active frequency band’s radios. -48 V DC, again just like for RRUs. Regular 7/16 RF connectors for the additional passive antenna functionality. This functionality is optional. The orange arrow indicates the DC power supply. The blue arrow corresponds to fiber connections to the base-band and the blue area is the antenna lobe for the same signal, while the green color indicate the passive antenna function in the same way. The blue lobe has been drawn bigger than the green to indicate that AIR’s active frequency band have a better link budget than regular antennas and regular radios have. You can also see tilts for the the green and the blue lobes are individually adjustable. ---