Product Information

Product Information

The revolutionary Microsemi Integrated GNSS Master (IGM) delivers precise GNSS based time to small cell deployments, bringing GNSS timing indoors. The IGM fully integrates a PTP Grandmaster with a GNSS receiver and antenna in a small, fully contained package designed to attach to an inside wall.

The cost-effective IGM does not use an external antenna thereby reducing the cost of purchasing, installing and maintaining external GNSS cable systems. The IGM also uses Power over Ethernet (PoE) to further simplify installation.

LTE-TDD, LTE-A and also LTE-FDD that implements applications which require tight coordination (eICIC, CoMP, etc) require very tight, UTC aligned phase synchronisation. The only sensible solution to provide this level of phase synchronisation is via GNSS PTP grandmaster timing systems. GNSS timing systems require an antenna to pick up the satellite signals. Due to the very low power of these signals an external GNSS antenna, often mounted on the roof for indoor small cells, has been the primary technique for signal acquisition. The problem is that indoor small cells needing sync are by nature often installed in areas of very low cellular and GNSS signal strength. The necessary GNSS timing receiver must then often run a very long cable to the roof of the building to support the few small cells within.