Getting an initial baseline of UAS Geographical Zone Information and then receive updates ensuring there are no information gaps between the initial baseline and the updates.

The consumer invokes the Srv_UHUB_DAIM_Data_Initial_Update interface – the retrieval interface – to receive an initial baseline of UAS Geographical Zone information for a period and a region of interest. Having an initial baseline, the consumer can invoke the Srv_UHUB_DAIM_Subscription interface – the subscription interface – to create a subscription. The provider will create a resource to manage the subscription in PAUSED status and a queue where it will make available to the user updates to the UAS Geographical Zone Information through the Evt_UHUB_DAIM_Data_Update interface – the publication interface. Once the subscription resource is created, the consumer will be able to delete it at any time by unsubscribing through the subscription interface.

To activate the subscription, the consumer will request to resume the subscription through the subscription interface to the provider, who will change the subscription status to ACTIVE, indicating that updates of UAS Geographical Zone information will start to be delivered via the publication interface. The subscription can be paused again by the consumer or the provider due to different reasons through the subscription interface.

The update event is carried out only when the subscription process state is ACTIVE. Thus, the USSP receives any update regarding to the following data models:

-UAS zones: it represents the volumes where specific restrictions apply.

-U-space airspace: it represents the volume where the Implementing Regulation (EU) 2021/664 ([9.]) applies.

-Dynamic airspace reconfiguration: it represents the volumes within the U-space airspace that require to be deactivated due to ATM requirements. It could affect the whole U-space airspace if required.

To ensure there are no information gaps between the retrieval of the initial baseline and the reception of updates via the publication interface once the subscription is active, is expected that the consumer invokes the retrieval interface again, specifying in the period of intertest the time provided in the initial retrieval.