| 主权项 |
1. A method for use in a wireless device, said method comprising:
a) receiving at least one radio resource control message comprising:
(i) configuration parameters of a plurality of carriers comprising a first carrier and at least one second carrier; and(ii) a carrier group index for a second carrier in said at least one second carrier, said carrier group index identifying a carrier group in a plurality of carrier groups comprising:
(1) a first carrier group comprising a first subset of said plurality of carriers; and(2) a second carrier group comprising a second subset of said at least one second carrier; b) receiving signals from a base station on said plurality of carriers, wherein downlink transmissions on said first carrier and said at least one second carrier are substantially time aligned with each other; c) transmitting uplink signals to said base station on said plurality of carriers; and d) receiving at least one time alignment command comprising a time adjustment value and an index identifying one carrier group; wherein uplink transmissions on said first carrier group and said second carrier group employ different synchronization signals on different carriers as timing reference and are adjusted in response to different time alignment commands. |
