Fiber to the antenna - Corning Incorporated

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Corning Cable Systems fiber to the antenna (FTTA) optimizing fiber for FTTA | The most basic way to connect remote radios (or units) to their base transceiver station (BTS) is to homerun optical and power cables from each remote radio to the BTS. However, wireless operators concerned with adding future remote radios and making repairs and upgrades with ease can benefit from a terminal-based solution. This approach places an optical terminal at the tower or rooftop to which short jumpers can be connected for each remote radio. A single optical cable runs from the terminal to the base station. Corning Cable Systems’ products support both terminalbased and homerun solutions. However, compared to the homerun approach, the terminal-based solution leverages Corning’s experience and technology used in other access networks, such as fiber to the home, to address a much wider range of short- and long-term operator needs. how does the terminal-based solution work? | Corning Cable Systems OptiSheath® MF2 or MF4 MultiPort Terminal, which is placed at the top of the tower or on the rooftop, forms the foundation of the solution. From that terminal to the remote radio, short cable assemblies (typically 3 to 10 m) are easily installed. With the 6-port version (two fibers/port), the OptiSheath MF2 or MF4 MultiPort Terminal can connect three remote radios on day one and add three more at a later date simply by adding the remote radio cable assemblies. The terminal has an integral 12-fiber stub cable that routes vertically down the tower and is preconnectorized for easy plug-in at a demarcation point or equipment rack at the BTS. The terminal and stub cable assembly are also available as separate components – in this case, a non-stubbed terminal has an input connection and various length cable assemblies can be stocked to address a range of tower heights. For carriers preferring to combine optical and power connectivity into one terminal, the remote radio distribution terminal (RRDT), or sealed remote radio distribution terminal (SRRDT), provides this capability. A variety of connectivity options for the BTS complete the FTTA solution set. selecting the best passive optical solution for your FTTA deployment is accomplished as three design choices | choice 1 | tower/rooftop At the tower or rooftop, both a terminal and remote radio fiber optic cable assembly (RRCA) are selected. RRCAs are preconnectorized assemblies with a connector for the radio interface on one end and the terminal on the other. The terminal provides ports for RRCA connection and either an integrated stub cable to reach the BTS or an input port for a vertical cable from the BTS. The OptiSheath MF2 or MF4 MultiPort Terminal provides low-profile optical connectivity while the RRDT supports both optical and power connectivity. choice 2 | tower to shelter/cabinet If a stubbed terminal is selected, its integrated stub cable acts as the vertical cabling that reaches out to the BTS shelter/cabinet. If a non-stubbed terminal is used, a preconnectorized cable assembly is selected to be “plugged in” at the terminal. In both cases, the BTS end of the stub/cable assembly is connectorized for the type of connector used at the BTS shelter/cabinet. choice 3 | BTS shelter/cabinet Fibers originating at the remote radios terminate at the shelter or cabinet. Within the shelter or cabinet, preconnectorized fibers from the terminal stub/cable assembly can be brought into a conventional patch panel or, if a multi-fiber connector is used, a quick “plug-andplay” solution can be deployed. While fibers from the tower can be connected directly to the electronics, a patch panel provides a test point and storage for spare fibers in the assembly. From the patch panel, patch cords of the appropriate length can be used to manage the connectivity between the tower verticals and the BTS electronics, including any adds, moves or changes. If the shelter or cabinet is prepared offsite and then placed at the tower, an external demarcation point can be included so that the tower vertical is simply plugged in (everything in the shelter or cabinet is prewired). EVO-1040-EN | Page 2
Corning Cable Systems fiber to the antenna (FTTA) OptiSheath ® MF2 MultiPort Terminal Solution Set Remote Radio Distribution Terminal Solution Set OptiSheath MF2 and MF4 MultiPort Terminal with stub Alternate: OptiSheath MF2 and MF4 MultiPort Terminal without stub Alternate: Sealed Remote Radio Distribution Terminal (SRRDT) choice 1 choice 1 choice 2 choice 2 choice 3 choice 3 EVO-1040-EN | Page 3
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Fiber to the antenna - Corning Incorporated

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