Methods, apparatus and systems for power control and timing advance

摘要

A wireless transmit/receive unit (WTRU) may establish communication with a first set of cells and a second set of cells. The first set of cells may be associated with a first scheduler and the second set of cells may be associated with a second scheduler. The maximum allowed transmit power for the WTRU may be determined for and/or distributed across the first set of cells and the second set of cells. The first scheduler may determine a first maximum power value for the first set of cells and a second maximum power value for the second set of cells configured. The first scheduler may signal the second maximum power value to the second scheduler.

主权项

1. A method comprising:
a wireless transmit/receive unit (WTRU) establishing connection with at least a first serving cell of a first set of cells associated with a first eNodeB (eNB) and at least a second serving cell of a second set of cells associated with a second eNB, wherein the WTRU is simultaneously connected to at least the first serving cell of the first set of cells associated with a first eNB and at least the second serving cell of the second set of cells associated with the second eNB; reporting power headroom associated with at least the first serving cell of the first set of cells associated with the first eNB and at least the second serving cell of the second set of cells associated with the second eNB, wherein the power headroom reporting comprises
determining a first set of one or more power headrooms associated with at least the first serving cell of the first set of cells associated with the first eNB, anddetermining a second set of one or more power headrooms associated with at least the second serving cell of the second set of cells associated with the second eNB,sending the first set of one or more power headrooms and the second set of one or more power headrooms to the first eNB; anddetermining a first set of one or more updated power headrooms associated with at least the first serving cell of the first set of cells associated with the first eNB, anddetermining a second set of one or more updated power headrooms associated with at least the second serving cell of the second set of cells associated with the second eNB, andsending the first set of one or more updated power headrooms and the second set of one or more updated power headrooms to the second eNB.