Telecommunication systems and components

A complete solution

Today, there is an important demand of speed on mobile networks, pulled up by smartphones, touchpads and other mobile devices on which 4G licenses are now becoming available. With its expertise in cables and cabling systems, Nexans designed a full range of solutions for power and data transmission to antennas. Nexans range answers to 2 types of situation:

  • Upgrading a 2G or 3G site into 3G or 4G
  • Creating a new site for 3G or 4G

 Technical challenges

Investment optimization leads to start the 3G/4G deployment with updating as much as possible existing sites. The main challenge here is to upgrade the power and data transmissions carried out by the feeder cables in order to support the 4th mobile generation (LTE). Nexans range includes solutions to do so either by replacing the coaxial feeders, or by re-using them.

The new generation of antennas needs a new link between the main unit (BTS) and each radio unit (RRU or RRH, under the antenna ) allowing a fast data transmission. This is why optical fiber is the best choice among current technologies. As a consequence, each radio unit requires a power supply, with 2 copper sections, and a data link, with 2 optical fibers.

When upgrading 2G sites, our solutions :

  • take into consideration old infrastructures (sometimes to be removed),
  • shorten the installation and interruption time,
  • can be adapted to sites with little space available,
  • and prevent heavy interventions (civil engineering, lifting).

 Diversity of sites

Existing sites are various and each configuration brings different installation constraints. Therefore, each site can use a standard or specific solution (mixed) as required. The following icons will guide the choice of a solution.

The main families of sites are as follows :


Solution A -> Hybrid cable

Hybrid cable integrating Optical Fiber and Power provides 1 or 3 antennas.

Solution B -> Separated Optical Fiber and Power cables

Optical Fiber cable and Power cable provide 1 to 6 antennas.

Solution C -> Reuse Feeder

Feeder cables ( 7/8 ’’,1’’ 1/4 & 1’’ 5/8 ) is made with inner copper tubes. In this solution, we reuse 2 feeder cables :

Reuse 1 st feeder for 0 V and for path of OF cable (preterminated on one end) as a pipe

Reuse 2 d feeder for 48 V

Optical Fiber cable and Power through reused feeder cables provide 1 to 6 antennas.