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Losing and Regaining Packet Data Service

Last Updated: 4/22/2017

The following diagram shows the process that miniport drivers should follow when they lose signal strength and packet service for various intervals. The labels in bold are OID identifiers or transactional flow control, and the labels in regular text are the important flags within the OID structure.

diagram illustrating losing and regaining signals for packet data service

To regain packet data service after it has been lost, use the following procedure:

  1. The miniport driver sends NDIS_WWAN_LINK_STATE to the MB Service.

  2. The miniport driver sends NDIS_WWAN_SIGNAL_STATE to the MB Service.

  3. The miniport driver sends NDIS_WWAN_SIGNAL_STATE to the MB Service.

  4. The miniport driver sends NDIS_WWAN_SIGNAL_STATE to the MB Service.

  5. The miniport driver sends NDIS_WWAN_REGISTER_STATE to the MB Service.

  6. The miniport driver sends NDIS_STATUS_WWAN_PACKET_SERVICE to the MB Service.

  7. The miniport driver sends NDIS_STATUS_LINK_STATE to the MB Service.

  8. The miniport driver sends NDIS_WWAN_SIGNAL_STATE to the MB Service.

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