3G UMTS Co-siting solutions

Wireless Operators face increasingly difficult deployments in expanding their tower infrastructure because the traditional method of add a network, add an antenna system is no longer always a viable option. Restrictions are placed on the operator preventing the addition of feeder lines and antennas to their existing sites due to physical limitations and local municipal policies. CCI’s 3G UMTS Cositing Product Series represents a major breakthrough in network deployment as it enables wireless operators to control, manage, and share their existing tower and antenna infrastructure amongst legacy, current, and next-generation basestation technologies without adding any additional feedlines and antennas.

By centralizing access to the tower infrastructure and controlling common BTS functions such as the Rx signal strength and Tx combining, CCI’s cositing equipment provides an open platform for interfacing existing and future technologies. This system also enhances performance of both the 2G and 3G systems, and has demonstrated improved range, call quality, and capacity in live testing. One central distribution point, the RX Air Interface Tray, becomes the gatekeeper of the Rx (uplink) signal to multiple basestations. As additional current and future air interface technologies are brought online, there is no longer a performance degradation as in traditional feeder expansion systems.

It is complemented by Duplexer modules that make the Rx signal available to fully duplexed basestations. Transmit combining via Diplexer modules allow combining of Cellular and PCS transmitters, and CCI’s Low-Loss UMTS/GSM Combiner allows UMTS transmit signals to be overlayed onto existing GSM transmit feeder lines.