METHOD FOR SOFT AND SOFTER HANDOVER IN TIME DIVISION DUPLEX CODE DIVISION MULTIPLE ACCESS (TDD-CDMA) NETWORKS

摘要

A wireless communication system, method and apparatus are provided for soft and softer handover of a mobile wireless transmit/receive unit (WTRU) betwee n two or more base stations and/or base station sectors. A network control uni t assigns selected base stations to transmit communication data to the WTRU based on the WTRU being disposed in base station or base station sector geographic range of service. A WTRU joint detector (JD) receiver is configur ed to receive and process one or more wireless data signals in each of a series of timeframes where each signal received within a common timeslot has a uniq ue channel encoding of the same communication data. The JD receiver has a plurality of channel estimators that estimate received signals within a comm on timeslot and a combiner configured to decode and combine the channel estimat es to derive a resultant data signal.