- VRVDR-54884: Implement PDV accuracy improvement that will be provided by Broadcom's part of eRAN sync 8275.2
- VRVDR-54883: Ability to get the status of the GPS antenna connection thru CLI command as part of eRAN sync 8275.2
- VRVDR-54882: Ability to remotely disable and enable GPS antenna connection to SIAD using a CLI modelled command as part of eRAN sync 8275.2
- VRVDR-54881: LED support for GPS connectivity as part of eRAN sync 8275.2
Global Navigation Satellite System (GNSS) refers to a group of satellites that are used to provide navigation signals to end-users. A number of such systems exist: Europe's Galileo, the USA's NAVSTAR Global Positioning System (GPS), Russia's Global'naya Navigatsionnaya Sputnikovaya Sistema (GLONASS), and China's BeiDou Navigation Satellite System. In general, the signals available from these systems are time, position, and an accurate pulse-per-second clock.
Some platforms may have GNSS hardware that is potentially used in conjunction with PTP, SyncE, and other timing services.
Since these systems involve some physical configuration and are subject to weather-related outages, it is necessary for the end-user to be able to perform some basic diagnostics on the existing GNSS hardware.
If the platform supports a GNSS, it should be continually monitored. Where possible, the antenna and signal status should be communicated on front panel LEDs. The LED capabilities of each platform are different and the exact behavior of the LEDs needs to be documented for each platform. The end-user should have the ability to query the GNSS from the CLI. The information returned will vary based on the specific capabilities of the hardware, but should include some basics such as antenna status, current time, satellites in view.
In order to debug potential problems with GNSS, the end-user may want to disable or enable the GNSS hardware. If the GNSS is disabled, it should not be used as the source of timing for any of the local services.