| 摘要 |
A mobile station performs random access method. The method includes receiving, from a first cell, a message identifying a random access preamble to transmit to a second cell, wherein the first and second cell operate on different frequencies. The method also includes determining whether the random access preamble is from a set of contention based random access preambles. In addition, the method includes receiving a random access response message, wherein the random access response message is addressed to a unique identifier of the mobile station; and transmitting, if the identified random access preamble is from the set of contention based preambles, a timing verification message.
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