On 22.july 2003.- we have finished commissioning of special repeater sites, for Vodafone Rt. These special repeater stations donor and remote, has been delivered by our Swedish partner AVITEC AB. for trial. Setting up and commisioned the sites we solved the missing coverage for next village Miklósfa from Nagykanizsa. We all hope, that using these beneficial solutions, will support Vodafone future coverage success.
Providing cost-effective coverage !
•Operator’s dilemma: Networks need to be rolled out quickly and with a limited budget, with focus on coverage and not on capacity
Solution: Frequency Translating Repeaters
–Low cost alternative to base stations
–Easier site acquisition
–No costs for transmission, MW link etc.
–Reduced size and power requirements
–Rural, urban, and building coverage (no LOS needed)
–Quick network deployment
Using Repeater Maintenance Console sofware
•Windows based interface
•Live display of all measured parameters
•Detailed traffic information
•Detailed alarm log
•Possibility to switch to terminal mode (command mode) for advanced trouble shooting
•EXTREMELY EASY TO USE!
Using Avitec’s Element Manager software enables remote access for the operators staff, from the operators OMC.
In an example for highway coverage one two-sector BTS feeds two frequency shifting repeaters, each covering an area comparable to base station. No additional capacity is required – the purpose is to get maximum coverage out of the one BTS, with one connection point for transmission (microwave link or fixed line). The frequency shifting repeater can even be configured to retransmit two BCCH’s, each in one direction, further expanding the coverage area from one site. Since the antenna isolation requirements are extremely low for the frequency shifting repeaters, Omni directional antennas can be used at the remote site to get extremely good coverage.
Low Cost – Low Traffic Coverage with Frequency
Shifting Repeaters
The example shows coverage extension in an area with low traffic by using frequency
shifting.
A two sector BTS is extended with two frequency shifting repeaters. Both donor units are mounted at the base station site and connected to the base station via directional
couplers. Each repeater has different link frequencies and then transmits the frequency of the opposite base station sector, thus minimizing interference or multipath problems. A normal handover is performed between the repeater coverage area and the neighboring base station coverage area.
Since the installation of frequency shifting repeaters doesn’t require very much antenna isolation, the requirements for the remote site are very moderate.
