Handover mechanism in LTE/SAE network
The transparent access to services is among the objectives of E-UTRAN which is guaranteed by using the
handover mechanism. Therefore, the use of this mechanism should reduce the latency requirements of the
system. In fact, the wireless communication system supports the following two main handover mechanisms
The hard handover means that the mobile user should be detached from the source eNB before it attaches
to the destination eNB.
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The soft handover means that the mobile user should be attached to the destination eNB while it still attached to the source eNB.