| 摘要 |
A method and apparatus for an eNodeB (eNB) are disclosed to allocate random access channel (RACH) resources in a wireless communication system. The method includes configuring a user equipment (UE) with an uplink (UL) component carrier (CC) set and a downlink (DL) component carrier set for carrier aggregation (CA). The method further includes pairing an uplink component carrier that has random access channel (RACH) resources and that is in the uplink component carrier set with a downlink component carrier in the downlink component carrier set for random access. The method also includes receiving a random access preamble message on the UL CC from the UE and transmitting a random access response message on the paired DL CC in response to reception of the random access preamble message during a random access procedure. |
