Patent ID: 9402255
Filing Date: 2016-07-26
CPC Classification: H04W

Claim Text:
1. A method for time aligning uplink transmissions by a mobile terminal in a mobile communication system, the mobile terminal being in communication with an aggregation access point, the method comprising the steps of: configuring the mobile terminal simultaneously with a time-aligned uplink reference cell and with a non-time-aligned uplink target cell, both cells being controlled by the aggregation access point, measuring, by the mobile terminal, transmission and/or reception time difference information relating to transmissions on the target cell and/or reference cell, determining, by the mobile terminal, a first target timing advance based on at least the measured transmission and/or reception time difference information and on a reference timing advance used for uplink transmissions on the time-aligned reference cell, time-aligning, by the mobile terminal, the uplink target cell by adjusting a timing for uplink transmissions on the uplink target cell based on the determined first target timing advance, and transmitting the measurement results and/or the first target timing advance from the mobile terminal to the aggregation access point.