Patent ID: 9554310
Date: 2017-01-24
CPC Classifications: H04L,H04W

Claim:
1. A random access method in wireless communication handover, the method comprising: receiving, by a target evolved Node B (eNB), a handover request message sent by a source eNB, wherein the handover request message comprises information of multiple target component carriers selected by the source eNB, and each of the multiple target component carriers is a carrier to which a User Equipment (UE) is to be handed over; determining, by the target eNB, whether to allow the multiple target component carriers selected by the source eNB; sending, by the target eNB, a handover request acknowledgement message to the source eNB, wherein the handover request acknowledgement message comprises information about at least two determined target component carriers for the UE, wherein if the multiple target component carriers selected by the source eNB are allowed by the target eNB, the at least two determined target component carriers include the multiple target component carriers selected by the source eNB; receiving, by the target eNB, a dedicated random access preamble sent by the UE; and sending, by the target eNB, a random access response message on a component carrier in the at least two determined target component carriers.