SOFT HANDOFF FOR OFDM

摘要

The present invention relates to soft handoffs in an OFDM system. Each mobile terminal measures pilot signal strengths of transmissions from adjacent base stations. If the pilot signal strength for a base station exceeds the defined threshold, that base station is added to an active set list. Each mobile terminal notifies the base station controller and the sevicing base station, the mobile terminal identifies the sole servicing base station or triggers a soft handoff mode uses a combination of scheduling and space-time coding to affect efficient and reliable handoffs.