The present document presents contextual information on handover required in DVB-SH networks. Handover is considered as the procedure used within one IP platform in order to continue IP Datacast service consumption under specific network modifications. The present document relies on the DVB-SH (see [12]@ [13] and [i.7]) and IP Datacast phase 1 (see [2] to [8]) set of specifications. The present document plainly references DVB-H specification [4] for the support of roaming and special mobility use cases.