Accessing a local data network via a mobile data connection

1. An apparatus comprising:

a first network interface that communicates with a remote unit over a first data connection, the first data connection providing the remote unit access to a remote data network;

a second network interface that communicates with a session management function (“SMF”); and

a processor that:

determines to configure the first data connection to provide access to a local data network in addition to the remote data network based on information received from the SMF;

transmits a downlink data packet to the remote unit of the first data connection;

activates a third network interface that communicates with the local data network in response to determining to configure the first data connection to provide access to the local data network; and

provides the remote unit with access to one or more services via the local data network using the third network interface.

2. The apparatus of claim 1 , wherein the downlink data packet includes an indicator that the first data connection provides access to the local data network in response to activating the third network interface.

3. The apparatus of claim 2 , wherein transmitting the downlink data packet including the indicator that the first data connection supports access to the local data network comprises the processor setting a local access availability flag in a header of the downlink data packet.

4. The apparatus of claim 3 , wherein the processor further inserts the local access availability flag into multiple downlink data packet of the first data connection in response to activating the third network interface.

5. The apparatus of claim 3 , wherein the processor further sets a charging rate parameter in the header of the downlink data packet, the charging rate parameter indicating a charging rate applied to data packets sent by the remote unit to the local data network.

6. The apparatus of claim 5 , wherein the processor sets the charging rate parameter in a predetermined number of downlink packets in response to activating the third network interface.

7. The apparatus of claim 5 , wherein the processor sets the charging rate parameter in a predetermined number of downlink packets in response to determining that the charging rate applied to data packets sent by the remote unit to the local data network has changed.

8. The apparatus of claim 2 , wherein transmitting the downlink data packet including the indicator that the first data connection provides access to the local data network comprises the processor inserting a charging rate parameter in a packet header of the downlink data packet, the presence of the charging rate parameter indicating that the first data connection provides access to the local data network.

9. The apparatus of claim 1 , wherein providing the remote unit with access to one or more services in the local data network comprises the processor:

receiving an uplink packet over the first data connection;

determining that the uplink packet includes a local access request flag request; and

routing the uplink packet via the third network interface in response to the uplink packet including the local access request flag request.

10. A method comprising:

establishing a first data connection with a remote unit over a first network interface, the first data connection providing the remote unit access to a remote data network;

communicating with a session management function (“SMF”) over a second network interface;

determining to configure the first data connection to provide access to a local data network in addition to the remote data network based on information received from the SMF;

activating a third network interface that communicates with the local data network in response to determining to configure the first data connection to provide access to the local data network

transmitting a downlink data packet to the remote unit over the first data connection; and

providing the remote unit with access to one or more services via the local data network using the third network interface.

11. The method of claim 10 , wherein the downlink data packet includes an indicator that the first data connection provides access to the local data network in response to activating the third network interface.

12. The method of claim 11 , wherein transmitting the downlink data packet including the indicator that the first data connection provides access to the local data network comprises setting a local access availability flag in a header of the downlink data packet.

13. The method of claim 12 , further comprising inserting the local access availability flag into multiple downlink data packets of the first data connection, in response to activating the third network interface.

14. The method of claim 12 , further comprising setting a charging rate parameter in the header of the downlink data packet, the charging rate parameter indicating a charging rate applied to data packets sent by the remote unit to the local data network.

15. The method of claim 14 , further comprising setting the charging rate parameter in a predetermined number of downlink packets, in response to activating the third network interface.

16. The method of claim 14 , further comprising setting the charging rate parameter in a predetermined number of downlink packets, in response to determining that the charging rate applied to data packets sent by the remote unit to the local data network has changed.

17. The method of claim 11 , wherein transmitting the downlink data packet including the indicator that the first data connection provides access to the local data network comprises inserting a charging rate parameter in a packet header of the downlink data packet, the presence of the charging rate parameter indicating that the first data connection provides access to the local data network.

18. The method of claim 10 , wherein providing the remote unit with access to one or more services in the local data network comprises:

receiving an uplink packet over the first data connection;

determining that an uplink packet received over the first data connection includes a local access request flag request; and

routing the uplink packet via the third network interface in response to the uplink packet including the local access request flag request.