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Media Independent Handover Architecture Why L2 abstractions? Link specific parameters are not the same across different media types and implementations and therefore they cannot be used at higher layers without a complete description of the media and the implementation. Main issues with L2 abstractions: Mapping function between link specific measurements and L2 abstractions: Provides information to higher layers about the status of the link Configures and sets link specific thresholds No one-to-one mapping between link specific measurements and L2 abstractions The need to characterize the network conditions end-to-end Cached measurements from past observations and previous connections Default estimates Measurements can be obtained via the MIH using the Information service or other network nodes. |