ASA spectrum sharing trial with real incumbent data, ASA Repository, TD-LTE base station and LTE core network

The demonstration showed how incumbent can share and use the band together with a mobile broadband operator. The ASA concept allows sharing of band the incumbent is not using at the moment.

The incumbent uses the 2.3GHz band for PMSE (Program Making Special Events) and the mobile operator for mobile broadband services.

In the demonstrated setup the actions done by the both the incumbent and MNO were shown.

In the beginning the MNO system is fully operating in the ASA band at Ylivieska, Finland. The two end users are watching video streams over the TD-LTE at the ASA band.

A TV camera crew is arriving at Ylivieska and they are planning to use cordless cameras for a live coverage. The TV camera crew informs the operator to clear the ASA band for their cameras using a special tool called LSA Incumbent Manager to define where, when and which bands they want to clear for TV cameras. This information is stored at the ASA Repository.

The cleared band overlaps the band used by the MNO for TD-LTE. As soon as the ASA Controller gets an updated ASA band information from the ASA Repository - ASA evacuation is started to clear the ASA band for TV cameras.

The demonstrated ASA evacuation consists of two processes - deactivating the TD-LTE from the ASA band and managing any existing ASA end users sessions.

ASA Controller commands the TD-LTE base station to shutdown and commands the two end users to handoff to a local WLAN network during the band shortage. At the end of ASA evacuation the user's LTE dongles are disconnected and the TD-LTE base station is off air. In the demonstration the ASA evacuation is completed under 30 seconds. Most of the time is consumed by the base station deactivation (20-25 seconds).