Mobility integrated with the access technology has proven to be successful. The Layer 2
protocol is aware of all relevant changes in access links; thus, the information required for move
detection and location discovery is readily available. User experience is generally positive,
because handover can be quick and no impact on high-level applications exists. However, like
many other aspects of Layer 2 protocols, scalability can be a problem.
Link layer mobility protocols alone are not capable of interaccess technology handover.
Interaccess technology handover is especially important ...
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