Systems and methods for optimized signaling for non IP data delivery (NIDD) communication

1. A method of operation of a network node to provide non-Internet Protocol, IP, data delivery for a wireless communication system, characterized in that the method comprises:

receiving, from an exposure function that exposes a core network to an application server, a non-IP data delivery request comprising data from the application server to be delivered to a wireless device via a non-IP data delivery procedure; and

making a determination as to whether to deliver the data to the wireless device via the non-IP data delivery procedure based on a power source status of a radio access network node associated with the wireless device and one or more additional criteria, wherein the non-IP data delivery request comprises an override indication, and the one or more additional criteria comprise a criterion that the data is to be delivered if the override indication is set regardless of the power source status of the radio access network node, and the power source status indicates whether or not the radio access network node is operating with a primary power source or a secondary power source where the radio access network node is capable of transmitting data to the wireless device regardless of whether the radio access network node is operating with the primary power source or the secondary power source.

2. The method of claim 1 wherein making the determination as to whether to deliver the data to the wireless device via the non-IP data delivery procedure comprises:

making the determination to not deliver the data to the wireless device via the non-IP data delivery procedure if the power source status of the radio access network node is that the radio access network node is using the secondary power source; and

making the determination to deliver the data to the wireless device via the non-IP data delivery procedure if the power source status of the radio access network node is that the radio access network node is using the primary power source.

3. The method of claim 1 further comprising:

refraining from delivering the data to the wireless device via the non-IP data delivery procedure if the determination is made to not deliver the data to the wireless device via the non-IP data delivery procedure; and

delivering the data to the wireless device via the non-IP data delivery procedure if the determination is made to deliver the data to the wireless device via the non-IP data delivery procedure.

4. The method of claim 3 further comprising, if the determination is made to not deliver the data to the wireless device via the non-IP data delivery procedure, sending a request to the exposure function for retransmission of the data.

5. The method of claim 4 wherein the request for retransmission of the data comprises an indication of a reason for the request for retransmission, the reason being that the radio access network node associated with the wireless device is operating on the secondary power source.

6. The method of claim 1 further comprising:

receiving, from the radio access network node, a power source status indication that is indicative of the power source status of the radio access network node; and

storing the power source status indication;

wherein making the determination as to whether to deliver the data to the wireless device via the non-IP data delivery procedure comprises making the determination as to whether to deliver the data to the wireless device via the non-IP data delivery procedure based on the stored power source status indication.

7. The method of claim 1 further comprising, upon receiving the non-IP data delivery request:

sending a request to the radio access network node associated with the wireless device for information comprising a power source status indication that is indicative of the power source status of the radio access network node; and

receiving the power source status indication from the radio access network node;

wherein making the determination as to whether to deliver the data to the wireless device via the non-IP data delivery procedure comprises making the determination as to whether to deliver the data to the wireless device via the non-IP data delivery procedure based on the received power source status indication.

8. The method of claim 1 wherein the non-IP data delivery request comprises a priority indication that indicates a priority assigned to the data, and the one or more additional criteria comprise a criterion based on the priority indication.

9. A network node for providing non-Internet Protocol, IP, data delivery in a wireless communication system, characterized in that the network node comprises:

a network interface; and

circuitry associated with the network interface operable to:

receive, from an exposure function that exposes a core network to an application server, a non-IP data delivery request comprising data from the application server to be delivered to a wireless device via a non-IP data delivery procedure;

make a determination as to whether to deliver the data to the wireless device via the non-IP data delivery procedure based on a power source status of a radio access network node associated with the wireless device and one or more additional criteria, wherein the non-IP data delivery request comprises an override indication, and the one or more additional criteria comprise a criterion that the data is to be delivered if the override indication is set regardless of the power source status of the radio access network node, and the power source status indicates whether or not the radio access network node is operating with a primary power source or a secondary power source where the radio access network node is capable of transmitting data to the wireless device regardless of whether the radio access network node is operating with the primary power source or the secondary power source.

10. The network node of claim 9 wherein, in order to make the determination as to whether to deliver the data to the wireless device via the non-IP data delivery procedure, the circuitry is further operable to:

make the determination to not deliver the data to the wireless device via the non-IP data delivery procedure if the power source status of the radio access network node is that the radio access network node is using the secondary power source; and

make the determination to deliver the data to the wireless device via the non-IP data delivery procedure if the power source status of the radio access network node is that the radio access network node is using the primary power source.

11. The network node of claim 9 wherein the circuitry is further operable to:

refrain from delivering the data to the wireless device via the non-IP data delivery procedure if the determination is made to not deliver the data to the wireless device via the non-IP data delivery procedure; and

deliver the data to the wireless device via the non-IP data delivery procedure if the determination is made to deliver the data to the wireless device via the non-IP data delivery procedure.

12. The network node of claim 11 wherein the circuitry is further operable to, if the determination is made to not deliver the data to the wireless device via the non-IP data delivery procedure, send a request to the exposure function for retransmission of the data.

13. The network node of claim 12 wherein the request for retransmission of the data comprises an indication of a reason for the request for retransmission, the reason being that the radio access network node associated with the wireless device is operating on the secondary power source.

14. The network node of claim 9 wherein the circuitry is further operable to:

receive, from the radio access network node, a power source status indication that is indicative of the power source status of the radio access network node;

store the power source status indication; and

make the determination as to whether to deliver the data to the wireless device via the non-IP data delivery procedure based on the stored power source status indication.

15. The network node of claim 9 wherein the circuitry is further operable to, upon receiving the non-IP data delivery request:

send a request to the radio access network node associated with the wireless device for information comprising a power source status indication that is indicative of the power source status of the radio access network node;

receive the power source status indication from the radio access network node; and

make the determination as to whether to deliver the data to the wireless device via the non-IP data delivery procedure based on the received power source status indication.

16. A non-transitory computer readable medium storing instructions executable by processing circuitry of a network node whereby the network node is operable to:

receive, from an exposure function that exposes a core network to an application server, a non-IP data delivery request comprising data from the application server to be delivered to a wireless device via a non-IP data delivery procedure; and

making a determination as to whether to deliver the data to the wireless device via the non-IP data delivery procedure based on a power source status of a radio access network node associated with the wireless device and one or more additional criteria, wherein the non-IP data delivery request comprises an override indication, and the one or more additional criteria comprise a criterion that the data is to be delivered if the override indication is set regardless of the power source status of the radio access network node, and the power source status indicates whether or not the radio access network node is operating with a primary power source or a secondary power source where the radio access network node is capable of transmitting data to the wireless device regardless of whether the radio access network node is operating with the primary power source or the secondary power source.