TIME DOMAIN MULTIPLEXING UL TRANSMISSION ON MULTIPLE SERVING CELLS FOR A MOBILE STATION WITH SINGLE TRANSMITTER

摘要

Apparatus and methods are provided for TDM uplink transmission on multiple serving cells with single transmitter. In one novel aspect, the UE selects a serving cell for an UL transmission subframe based on a TDM selection rule. In one embodiment, the switching rule involves identifying one or more serving cells with a highest UL transmission priority and a serving-cell priority rule. In another novel aspect, the UE drops a selected part of the UL transmission within the overlap region based on one or more switching rules, which include dropping a last OFDM symbol, dropping a portion of a last OFDM symbol of the SRS with combing structure, dropping a partial CP of a first OFDM symbol of the second serving cell, and dropping a partial tail of a last OFDM symbol of the first serving cell and partial CP of a first OFDM symbol of the second serving cell.

主权项

1. A method comprising:
configuring multiple serving cells by a user equipment (UE) in a wireless network, wherein uplink (UL) transmissions are transmitted sequentially over multiple serving cells to different base stations using time domain multiplexing (TDM); selecting a serving cell for an UL transmission subframe based on a TDM selection rule; and performing an UL transmission to the selected serving cell for the subframe.